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Tytuł:
Minimum energy control of fractional positive continuous-time linear systems
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/200346.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional system
positive system
minimum energy control
procedure
Opis:
The minimum energy control problem for the fractional positive continuous-time linear systems is formulated and solved. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by a numerical example.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 803-807
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of positive continuous-time linear systems with bounded inputs
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/141497.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
positive
continuous-time
minimum energy control
bounded inputs
procedure
Opis:
The minimum energy control problem for the positive continuous-time linear systems with bounded inputs is formulated and solved. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by a numerical example.
Źródło:
Archives of Electrical Engineering; 2014, 63, 1; 19-27
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of positive discrete-time linear systems with bounded inputs
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/229247.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
positive
discrete-time
minimum energy control
bounded inputs
procedure
Opis:
The minimum energy control problem for the positive discrete-time linear systems with bounded inputs is formulated and solved. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by a numerical example.
Źródło:
Archives of Control Sciences; 2013, 23, 2; 205-211
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Necessary and sufficient conditions for the minimum energy control of positive discrete-time linear systems with bounded inputs
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/202217.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
positive
discrete-time
minimum energy control
bounded inputs
procedure
Opis:
The minimum energy control problem for the positive discrete-time linear systems with bounded inputs is formulated and solved. Necessary and sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by a numerical example.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 1; 85-89
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of Heating System Local Control on Energy Consumption in Apartment Buildings
Autorzy:
Deshko, Valerii
Bilous, Inna
Maksymenko, Oleksandra
Powiązania:
https://bibliotekanauki.pl/articles/27315745.pdf
Data publikacji:
2023
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
energy saving
internal temperature
energy control
consumption energy for heating
residential buildings
modelling
Opis:
Improving the energy efficiency of residential buildings is ensured by improving the thermal protection characteristics and the wider introduction of control tools. In order to take into account the influence of individualisation of operating conditions, the study of the regulation of heating distribution of a single-pipe system with bypassed heating devices of a 5-storey typical for Ukraine mass building of the 80s after thermos-modernisation for conditions in Kyiv and Warsaw (Poland) was carried out. On the basis of the simulation model created in the Mathcad software environment for design/rated and average climatic conditions, the influence of internal heat flows into adjacent rooms on the distribution of energy consumption, changes in internal air temperature under the influence of local changes in the heating device flow coefficients were studied. The developed approaches, and the results obtained on the influence of local regulation of devices of vertical single-pipe heating systems can be used to clarify the distribution of energy consumption for heating between individual zones of apartment buildings.
Źródło:
Rocznik Ochrona Środowiska; 2023, 25; 77--85
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An extension of Klamka’s method of minimum energy control to fractional positive discrete-time linear systems with bounded inputs
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/200464.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional
discrete-time
positive
minimum energy control
bounded inputs
procedure
Opis:
The Klamka’s method of minimum energy control problem is extended to fractional positive discrete-time linear systems with bounded inputs. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by numerical example.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 2; 227-231
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of fractional positive electrical circuits
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/141499.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional
positive
electrical circuits
minimum energy control
bounded
inputs
procedure
Opis:
Minimum energy control problem for the fractional positive electrical circuits is formulated and solved. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by an example of fractional positive electrical circuit.
Źródło:
Archives of Electrical Engineering; 2016, 65, 2; 191-201
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of positive 2D continuous-discrete linear systems with bounded inputs
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/229934.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
2D continuous-discrete
linear
positive
reachability
minimum energy control
Opis:
A new formulation of the minimum energy control problem for the positive 2D continuousdiscrete linear systems with bounded inputs is proposed. Necessary and sufficient conditions for the reachability of the systems are established. Conditions for the existence of the solution to the minimum energy control problem and a procedure for computation of an input minimizing the given performance index are given. Effectiveness of the procedure is demonstrated on numerical example.
Źródło:
Archives of Control Sciences; 2015, 25, 3; 319-331
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Robust Control Strategy for Microgrid Energy Using Fuzzy Logic
Autorzy:
Meliani, Meryem
El Barkany, Abdellah
El Abbassi, Ikram
Absi, Rafik
Jeffali, Faouaz
Powiązania:
https://bibliotekanauki.pl/articles/2201185.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy control
renewable energy sources
fuzzy logic system
microgrid
storage system
smart grid
Opis:
This paper highlights the storage charging and discharging issue. The study objective is to manage the energy inputs and outputs of the principal grid at the same time in order to maximize profit while decreasing costs, as well as to ensure the availability of energy according to demand and the decisions to either save or search for energy. A fuzzy logic control model is applied in MATLAB Simulink to deal with the system’s uncertainties in scheduling the storage battery technology and the charging- discharging. The results proved that the fuzzy logic model has the potential to efficiently lower fluctuations and prolong the lifecycle.
Źródło:
Management and Production Engineering Review; 2023, 14, 1; 127--136
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of descriptor discrete-time linear systems by the use of Weierstrass-Kronecker decomposition
Autorzy:
Kaczorek, T.
Borawski, K.
Powiązania:
https://bibliotekanauki.pl/articles/229539.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
descriptor
discrete-time
linear
system
Weierstrass-Kronecker decomposition
minimum energy control
Opis:
The minimum energy control problem for the descriptor discrete-time linear systems by the use of Weierstrass-Kronecker decomposition is formulated and solved. Necessary and sufficient conditions for the reachability of descriptor discrete-time linear systems are given. A procedure for computation of optimal input and a minimal value of the performance index is proposed and illustrated by a numerical example.
Źródło:
Archives of Control Sciences; 2016, 26, 2; 177-187
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An extension of Klamka’s method to positive descriptor discrete-time linear systems with bounded inputs
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/229979.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
descriptor
positive
discrete-time
linear
system
Weierstrass-Kronecker decomposition
minimum energy control
Opis:
The minimum energy control problem for the positive descriptor discrete-time linear systems with bounded inputs by the use of Weierstrass-Kronecker decomposition is formulated and solved. Necessary and sufficient conditions for the positivity and reachability of descriptor discrete-time linear systems are given. Conditions for the existence of solution and procedure for computation of optimal input and the minimal value of the performance index is proposed and illustrated by a numerical example.
Źródło:
Archives of Control Sciences; 2018, 28, 2; 255-268
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czy liczniki kvarh powinny być stosowane?
Autorzy:
Szczerba, Z.
Powiązania:
https://bibliotekanauki.pl/articles/396790.pdf
Data publikacji:
2009
Wydawca:
ENERGA
Tematy:
technika pomiarowa
liczniki
urządzenia pomiarowe
measurement technique
measuring device
energy control meter
Opis:
Rozliczenia za dostawę lub pobór mocy biernej są określane na podstawie wskazań liczników kvarh. W artykule wykazano, że wskazania tych liczników nie mają związku z kosztami dostawy lub poboru mocy biernej. Na przykładach wykazano brak tych związków. Wykazano, że obecny stan techniki pomiarowej umożliwia zastosowanie liczników nowej generacji o algorytmach działania wiążących wskazania z kosztami uzasadnionymi.
Źródło:
Acta Energetica; 2009, 2; 85-87
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Controllability, reachability and minimum energy control of fractional discrete-time linear systems with multiple delays in state
Autorzy:
Busłowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/200470.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
linear systems
fractional
discrete-time
time-delay
controllability
reachability
minimum energy control
Opis:
In the paper the problems of controllability, reachability and minimum energy control of a fractional discrete-time linear system with delays in state are addressed. A general form of solution of the state equation of the system is given and necessary and sufficient conditions for controllability, reachability and minimum energy control are established. The problems are considered for systems with unbounded and bounded inputs. The considerations are illustrated by numerical examples. Influence of a value of the fractional order on an optimal value of the performance index of the minimum energy control is examined on an example.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 2; 233-239
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of positive time-varying linear systems
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/387425.pdf
Data publikacji:
2015
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
positive
continuous-time
minimum energy control
procedure
czas ciągły
układ liniowy
przykłady numeryczne
Opis:
The minimum energy control problem for the positive time-varying linear systems is formulated and solved. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by a numerical example.
Źródło:
Acta Mechanica et Automatica; 2015, 9, 4; 225-228
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of positive continuous-time linear systems with bounded inputs
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/329898.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
positive system
continuous time
minimum energy control
bounded inputs
system dodatni
układ ciągły
sterowanie energooszczędne
Opis:
The minimum energy control problem for positive continuous-time linear systems with bounded inputs is formulated and solved. Sufficient conditions for the existence of a solution to the problem are established. A procedure for solving the problem is proposed and illustrated with a numerical example.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2013, 23, 4; 725-730
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of fractional positive continuous-time linear systems with bounded inputs
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/330646.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
fractional system
positive system
minimum energy control
bounded input
układ ułamkowy
układ dodatni
sterowanie energooszczędne
Opis:
A minimum energy control problem for fractional positive continuous-time linear systems with bounded inputs is formulated and solved. Sufficient conditions for the existence of a solution to the problem are established. A procedure for solving the problem is proposed and illustrated with a numerical example.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2014, 24, 2; 335-340
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of 2D positive continuous-discrete linear systems
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/386831.pdf
Data publikacji:
2014
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
2D continuous-discrete
linear
positive
reachability
minimum energy control
2D
osiągalność
sterowanie minimalnoenergetyczne
Opis:
The minimum energy control problem for the 2D positive continuous-discrete linear systems is formulated and solved. Necessary and sufficient conditions for the reachability at the point of the systems are given. Sufficient conditions for the existence of solution to the problem are established. It is shown that if the system is reachable then there exists an optimal input that steers the state from zero boundary conditions to given final state and minimizing the performance index for only one step (q = 1). A procedure for solving of the problem is proposed and illustrated by a numerical example.
Źródło:
Acta Mechanica et Automatica; 2014, 8, 3; 165-168
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reachability and minimum energy control of positive 2D systems with delays
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/970095.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
układ dwuwymiarowy
rozwiązanie
opóźnienie
osiągalność
2D positive system
delay
reachability
solution
minimum energy control
Opis:
The notion of internally positive 2D model (system) with delays is introduced. Solution of the 2D linear models with delays is derived. Necessary and sufficient conditions for the internal positivity and reachability of the models are established. The Cayley-Hamilton theorem for the 2D linear models with delays is extended. The minimum energy control for the internally positive 2D models with delays is formulated and solved.
Źródło:
Control and Cybernetics; 2005, 34, 2; 411-423
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stochastic controllability of linear systems with state delays
Autorzy:
Klamka, J.
Powiązania:
https://bibliotekanauki.pl/articles/911240.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sterowalność
liniowy system sterowania
sterowanie z minimalną energią
controllability
linear control systems
stochastic control systems
delayed state variables
minimum energy control
Opis:
A class of finite-dimensional stationary dynamic control systems described by linear stochastic ordinary differential state equations with a single point delay in the state variables is considered. Using a theorem and methods adopted directly from deterministic controllability problems, necessary and sufficient conditions for various kinds of stochastic relative controllability are formulated and proved. It will be demonstrated that under suitable assumptions the relative controllability of an associated deterministic linear dynamic system is equivalent to the stochastic relative exact controllability and the stochastic relative approximate controllability of the original linear stochastic dynamic system. Some remarks and comments on the existing results for the controllability of linear dynamic systems with delays are also presented. Finally, a minimum energy control problem for a stochastic dynamic system is formulated and solved.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2007, 17, 1; 5-13
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy-saving control of trams with DC series motors allowing for light signalling
Autorzy:
Rawicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/376571.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
tram vehicles
energy-saving control
DC series motors
light signalling
Opis:
Novelty of this paper consists in simultaneous analysis of the traffic of some tram vehicles taking into consideration the criterion of the electric energy consumption minimum. Problems of traffic disturbances have been also included. First of all the influence of the light signalling at the crossing has been analysed to reduce the energy use caused by long stops forcing necessity of quicker subsequent ride to liquidate delay in relation to the time-table. Within the elaborated methodology, the tram route is divided into parts in keeping with different motion resistances for individual route fragments. Such simulation is more real and precise for tram ride conditions in the city. The paper deals with modernized trams driven by DC series motors supplied from modern choppers. For the stage of the vehicle running with the constant speed, the best choice of the value of the field-weakening coefficient can increase the motor efficiency.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2016, 85; 221-231
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of fractional descriptor positive discrete-time linear systems
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/330408.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
fractional system
descriptor system
positive system
minimum energy control
układ ułamkowy
układ deskrypcyjny
układ dodatni
sterowanie energooszczędne
Opis:
Necessary and sufficient conditions for the positivity and reachability of fractional descriptor positive discrete-time linear systems are established. The minimum energy control problem for descriptor positive systems is formulated and solved. Sufficient conditions for the existence of a solution to the minimum energy control problem are given. A procedure for computation of optimal input sequences and a minimal value of the performance index is proposed and illustrated by a numerical example.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2014, 24, 4; 735-743
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of fractional positive continuous-time linear systems using Caputo-Fabrizio definition
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/200714.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
kontrola zużycia energii
ograniczone wejścia
definicja Caputo-Rabrizio
fractional positive continuous-time system
minimum energy control
bounded inputs
Opis:
The Caputo-Fabrizio definition of the fractional derivative is applied to minimum energy control of fractional positive continuous- time linear systems with bounded inputs. Conditions for the reachability of standard and positive fractional linear continuous-time systems are established. The minimum energy control problem for the fractional positive linear systems with bounded inputs is formulated and solved.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 1; 45-51
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synchrogenverter - parallel connection of synchronous generator and power converter with energy storage
Autorzy:
Szulawski, P.
Koczara, W.
Powiązania:
https://bibliotekanauki.pl/articles/1193215.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
synchronous generator
power electronic converter
synchrogenverter
energy storage current control
Opis:
The paper describes novel power generation topology wherein synchronous generator have a parallel connected power electronic converter. In this arrangement synchronous generator is only source of active power and power electronic converter is source of reactive power. Such power distribution allows to increase the synchronous generator generated active power by 25%, and operate with unity power factor. The power converter with energy storage system embedded can deliver additional active power in transient state to improve generator stability.
Źródło:
Power Electronics and Drives; 2016, 1, 36/1; 69-78
2451-0262
2543-4292
Pojawia się w:
Power Electronics and Drives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przykłady zastosowania sterowników PLC w modelowaniu energooszczędnych układów sterowania
Examples of the application of PLC in the modeling of energy-saving control systems
Autorzy:
Nowocień, A.
Makowski, M.
Pietruszczak, D.
Powiązania:
https://bibliotekanauki.pl/articles/250070.pdf
Data publikacji:
2013
Wydawca:
Instytut Naukowo-Wydawniczy TTS
Tematy:
energooszczędny układ sterowania
sterowniki PLC
taśmociąg
energy saving control system
PLC controller
conveyor
Opis:
W artykule przedstawiono układ energooszczędnego sterowania na przykładzie aplikacji sterowania taśmociągiem. Do wykonania stanowiska wykorzystano sterownik PLC firmy LG Master K-120 S, panel operatorski XGT firmy LG oraz przemiennik częstotliwości firmy Siemens. Stanowisko może być zastosowane do symulacji układów sterowania stosowanych w przemyśle. Wykorzystując konfiguracje urządzeń przedstawionych w artykule, na zajęciach laboratoryjnych studenci nabierają umiejętności projektowania elementów linii technologicznych. W przedstawionym układzie do komunikacji między urządzeniami zastosowano interfejs RS-485.
This paper presents the energy saving control system conveyor control application examples. To make the position of a PLC LG Master K-120 S, the operator terminal XGT LG and Siemens frequency converter. The position may be used to simulate the control systems used in the industry. Using the configuration of the devices shown in the paper, the laboratory students acquire skills to design elements lines. In the presented system for communication between devices uses an RS - 485.
Źródło:
TTS Technika Transportu Szynowego; 2013, 10; 407-413, CD
1232-3829
2543-5728
Pojawia się w:
TTS Technika Transportu Szynowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of descriptor fractional discrete-time linear systems with two different fractional orders
Autorzy:
Sajewski, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/330617.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
minimum energy control
descriptor system
fractional system
discrete-time linear system
sterowanie energooszczędne
układ deskryptorowy
układ ułamkowy
liniowy układ dyskretny
Opis:
Reachability and minimum energy control of descriptor fractional discrete-time linear systems with different fractional orders are addressed. Using the Weierstrass–Kronecker decomposition theorem of the regular pencil, a solution to the state equation of descriptor fractional discrete-time linear systems with different fractional orders is given. The reachability condition of this class of systems is presented and used for solving the minimum energy control problem. The discussion is illustrated with numerical examples.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2017, 27, 1; 33-41
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conductance-controlled global-compensation-type shunt active power filter
Autorzy:
Szromba, A.
Powiązania:
https://bibliotekanauki.pl/articles/140436.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
shunt active power filter
active current
indirect control method
instantaneous compensation
load equivalent conductance
energy flow control
Opis:
This paper presents a load equivalent conductance based control method for a shunt active power filter. The principle of energy balance in the circuit, which means between supplying source - active filter - load, is used to obtain the control formula. The natural inertia of the active filter action is exploited, so no PI regulators are needed. The active filter can compensate for non-active current and, additionally, can stabilise the supplying source active power. In a case of generating loads energy harvesting is possible. The presented method is useful as well for voltage-source as current-source inverter based active filters, and for DC system as well as for AC single- or three-phase one.
Źródło:
Archives of Electrical Engineering; 2015, 64, 2; 259-275
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reachability and minimum energy control of positive discrete-time linear systems with multiple delays in state and control
Osiągalność i sterowanie z minimalną energią liniowych dodatnich układów dyskretnych z wieloma opóźnieniami stanu i sterowania
Autorzy:
Kaczorek, T.
Busłowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/153534.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
liniowy układ dodatni
dyskretny
opóźnienie
osiągalność
sterowanie z minimalną energią
linear positive systems
discrete-time systems
time-delay
reachability
minimum energy control
Opis:
A notion of positive linear discrete-time systems with multiple delays in state and control is introduced. The necessary and sufficient conditions for positivity, reachability and minimum energy control are given. Considerations are illustrated by example.
W pracy podano warunki, przy spełnieniu których liniowy dyskretny układ z wieloma opóźnieniami zmiennych stanu i sterowania jest układem dodatnim. Podano też warunki konieczne i wystarczające osiągalności oraz sterowania z minimalną energią. Rozważania zilustrowano przykładem.
Źródło:
Pomiary Automatyka Kontrola; 2007, R. 53, nr 10, 10; 40-44
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magazyn energii w systemie zarządzania pracą sieci elektroenergetycznej
Energy storage unit operating in power network management system
Autorzy:
Boniewicz, P.
Powiązania:
https://bibliotekanauki.pl/articles/266382.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
magazyn energii
moc bierna
zarządzanie systemem elektroenergetycznym
mostek DAB
energy storage system
RESS
DAB
energy system control
energy system management
electrical energy quality
Opis:
W niniejszym opracowaniu przedstawiono koncepcję oraz przykładowe rozwiązanie sterowanego magazynu energii z możliwością włączenia w nadrzędny system zarządzania. Przedstawiono układ sterowania oraz część energetyczną, przebadano pracę układu oraz przedstawiono wyniki badań symulacyjnych w konfiguracji autonomicznej oraz włączonego do systemu elektroenergetycznego. Przedstawiono wpływ działania magazynu na wybrane parametry w odległym miejscu w sieci.
The study presents the concept and exemplary implementation of a modified controlled energy storage system (RESS) with possibility of an interacting with a controlled grid management system. Controlled RESS can independently inject or draw (in a contolled way) active and reactive power, with local and also distant control from point of a network. Active and reactive power set points are independent, so RESS can draw active/reactive power in one phase can simultaneously inject in other. The internal control system and the power circuit of converter were presented. The autonomous and on-grid operations was examined and the results of simulation tests were presented. The influence of distantly controlled system activity on selected parameters at a remote point of the network was presented. Good static and dynamic results were obtained. The author proposes using a controlled RESS in a managed power system with local or distant control to compensate an active or reactive power locally, and also in a distant point of a power network. Controlled RESS it that way can lower energy transmission and transformation losses, and increase a power quality on a network.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2018, 60; 15-18
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of a Web-based remote control system for qZS DAB application using low-cost ARM platform
Autorzy:
Korzeniewski, M.
Kulikowski, K.
Zakis, J.
Jasiński, M.
Malinowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/201276.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ARM processor
DAB converter controller
network controller
web-based user interface
energy control
procesor ARM
kontroler
konwerter
kontroler sieciowy
interfejs użytkownika oparty na sieci Web
kontrola energii
DAB
Opis:
Continuous development of intelligent network applications drives the demand for deployment-ready hardware and software solutions. Such solutions are highly valued not only by distributed producers of energy but by energy consumers as well. The use of intelligent network applications enables the development and improvement of the quality of services. It also increases self-sufficiency and efficiency. This paper describes an example of such device that allows for the control of a dual active bridge (DAB) converter and enables its remote control in real time over an IP-based network. The details of both hardware and software components of proposed implementation are provided. The DAB converter gives a possibility to control and manage the energy between two DC power systems with very different voltage levels. Not only information, but also the quality of energy, the direction of power flow, and energy storage systems can be easily controlled through an IP-based network and power electronics converters. Information technology, together with intelligent control of power electronics technology, provides a flexible solution, especially for sustainable smart grids.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 4; 887-896
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ISEE - Intelligent System of Energy Efficiency
Autorzy:
Ziąbka, Tomasz
Grzebielec, Andrzej
Rusowicz, Artur
Powiązania:
https://bibliotekanauki.pl/articles/132041.pdf
Data publikacji:
2020
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
energy efficiency
control system
Opis:
Increasing energy efficiency is one of the priorities of the European 3x20 climate and enery package. The ISEE system - Intelligent Energy Efficiency Control is a response to the growing interest in energy saving. It is also closely related to energy efficiency and reduction of greenhouse gas emissions. The presented system also allows connecting renewable energy sources to the analyzed facilities. It is intended for a wide range of recipients.
Źródło:
Modern Engineering; 2020, 1; 6-10
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Coordination Control between Battery and Supercapacitor Energy Storage Systems to Segregate Power for On-Grid Application
Autorzy:
Sangiri, Jeemut Bahan
Bhowmick, Supratik
Maiti, Suman
Chakraborty, Chandan
Powiązania:
https://bibliotekanauki.pl/articles/2175941.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hybrid energy storage system
battery control
power segregation
coordination control
energy management
Opis:
The present work describes a control methodology for a hybrid energy storage system (HESS) to improve its transient performance under dynamic load conditions. The proposed coordination control enhanced life cycle performance by segregating the power between battery energy storage systems (BESS) and a supercapacitor (SC). The BESS and SC are connected parallel to each other, and two individual DC–DC bidirectional converters connect them to a common DC bus. The coordination control is established between the controllers of BESS and the SC of HESS, which helps to utilise the usable energy capacity of the HESS. The charging/discharging current of the BESS is controlled within the allowable safety range based on the slope and magnitude of the BESS current. The high-frequency power component is handled by the SC, which helps to reduce the extra exhaustion on the BESS during operation with a higher current. The proposed coordination control of HESS is validated through simulation and the results show the effectiveness of the proposed controller.
Źródło:
Power Electronics and Drives; 2022, 7, 42; 227--245
2451-0262
2543-4292
Pojawia się w:
Power Electronics and Drives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of losses and energy efficiency of hydrostatic drives with hydraulic cylinder
Autorzy:
Skorek, G.
Powiązania:
https://bibliotekanauki.pl/articles/260205.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
energy losses
energy efficiency
hydrostatic system
control structures
proportional directional control valve
cylinder
Opis:
Energy efficiency of hydrostatic transmissions, and especially efficiencies of drives with motor speed controlled by throttle, as well as efficiency of hydraulic servomechanisms can in fact be higher than the efficiency values most frequently given by the respective literature in this field. With the progress achieved in recent years in the development of hydraulic systems it is becoming necessary to develop methods for precise energy efficiency calculation of such systems. It is difficult to imagine that more and more, better and better machines and control elements could be used without the possibility of a mathematical tool at our disposal to enable an accurate analysis and assessment of behavior of the system in which such machines and control elements have been applied. The paper discusses energy savings using mathematical model of losses in elements, the energy efficiency of the system. There are possibilities to reduce energy losses in proportional control systems (in the pump, in the throttle control unit, especially in the cylinder), and thus to improve the energy efficiency of the throttling manifold. The considerations allow for comparison of the loss power resulting from the applied hydraulic control structure of the hydraulic cylinder and the power consumed by the pump from the electric motor that drives it, the power necessary to provide pump-driven hydraulic cylinder. The article shows the impact on the output (useful) power consumed in the considered systems, and the impact on the power consumed of the loss power in the individual elements. The paper presents also formulas of loss power, formulas of energy efficiency connected with investigated hydrostatic drives, two schematic diagrams of hydraulic systems, their principle of operation and problems of studying losses in elements and energy efficiency characteristics of systems consisting of a feed assembly, control set and cylinder. It also includes a subject matter connected with an energy loss power of hydrostatic systems with hydraulic cylinder controlled by proportional directional control valve. Diagrams of loss power of two hydraulic systems worked at the same parameters of speed and load of a cylinder, which were different due to structure and ability of energy saving, were presented and compared.
Źródło:
Polish Maritime Research; 2018, 4; 114-129
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodical aspects of modeling technological processes in selected agricultural facilities
Metodyczne aspekty modelowania procesów technologicznych w wybranych obiektach rolniczych
Autorzy:
Wachowicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/337073.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
specialized agricultural buildings
modeling of technological processes
energy-saving microclimate control
specjalistyczne budynki rolnicze
modelowanie procesów technologicznych
energooszczędne sterowanie mikroklimatem
Opis:
The purpose of the work was to present the methodology of modeling technological processes taking place in specialized agricultural facilities (greenhouses, mushroom farms, storage rooms) for the purpose of controlling the microclimate in these buildings. In the work, the author wanted to share her experience of many years in the field of process modeling and microclimate control, pointing out the difficulties and problems that must be overcome while formulating models and presenting recommendations to overcome these difficulties. In addition, the work discusses the possibilities of using the developed models during the design of microclimate control systems and during the control of thermal and humidity parameters.
Celem pracy było przedstawienie metodyki modelowania procesów technologicznych zachodzących w specjalistycznych obiektach rolniczych (szklarniach, pieczarkarniach, przechowalniach) dla potrzeb sterowania mikroklimatem w tych budynkach. W pracy autorka chciała podzielić się swoimi wieloletnimi doświadczeniami z zakresu modelowania procesów i sterowania mikroklimatem, wskazując na trudności i problemy, które należy pokonać podczas formułowania modeli oraz przedstawiając zalecenia odnośnie sposobów pokonania tych trudności. Ponadto w pracy omówiono możliwości wykorzystania opracowanych modeli podczas projektowania systemów sterowania mikroklimatem i podczas sterowania parametrami termiczno-wilgotnościowymi.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2018, 63, 4; 234-239
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy Storage Control Strategy In a Prosumer System and Its Impact on the Distribution Grid
Strategia sterowania zasobnikiem energii w instalacji prosumenckiej i jej wpływ na pracę sieci dystrybucyjnej
Autorzy:
Urbanek, P.
Wasiak, I.
Pawełek, R.
Powiązania:
https://bibliotekanauki.pl/articles/396788.pdf
Data publikacji:
2017
Wydawca:
ENERGA
Tematy:
microsystem
prosumer installation
prosumer
electricity storage
energy storage control
electric power quality
mikrosystem
instalacja prosumencka
prosument
zasobnik energii elektrycznej
sterowanie zasobnikiem energii
jakość energii elektrycznej
Opis:
This paper discusses the operation of a low voltage prosumer system consisting of receivers and power sources. The system represents a hypothetical customer with variable energy input and output. The main technical issues related to the operation of such a system are presented. The application of an electric energy storage in the system for the purpose of managing the active power and providing the ancillary services relevant for the system's owner is discussed. The basic criterion of the system's performance is maximizing the use of the energy generated by the prosumer and maintaining the power factor at a desired level. The storage efficiency was tested using a simulation model developed in the PSCAD / EMTDC program. Sample simulation results are presented.
Artykuł dotyczy analizy pracy instalacji prosumenckiej niskiego napięcia składającej się z odbiorników oraz źródeł energii elektrycznej. Badana instalacja odwzorowuje hipotetycznego odbiorcę ze zmiennym obciążeniem oraz zmienną produkcją energii. Przedstawiono główne problemy techniczne związane z pracą takiej instalacji. Rozważono zastosowanie w instalacji zasobnika energii elektrycznej, którego celem jest zarządzanie mocą czynną oraz realizacja usług pomocniczych istotnych z punktu widzenia właściciela instalacji. Podstawowym kryterium pracy układu jest maksymalizacja wykorzystania energii produkowanej przez prosumenta oraz utrzymanie współczynnika mocy na żądanym poziomie. Skuteczność pracy zasobnika zbadano za pomocą modelu symulacyjnego opracowanego w programie PSCAD/EMTDC. Zaprezentowano przykładowe wyniki symulacji
Źródło:
Acta Energetica; 2017, 2; 213-221
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intelligent buildings and automatic control
Autorzy:
Bullejos Martín, David
Powiązania:
https://bibliotekanauki.pl/chapters/31026866.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
monitoring
control mode
automatic control
energy management
gardening
security
Opis:
Automation systems can be classified according to an array of criteria, which includes length, complexity, application and integration. The application of these systems to the field of habitability defines a specific use of equal or greater complexity to industrial automation. The integration of automation and control systems into buildings improves its operating characteristics, providing them with better services and operations easy to use.
Źródło:
Buildings 2020+. Constructions, materials and installations; 153-167
9788365596703
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensorless and energy-efficient PMSM drive for fan application
Autorzy:
Brock, S.
Pajchrowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/140706.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy losses
v/f control
PMSM
Opis:
The paper presents the problem of sensorless control of a permanent magnets synchronous motor (PMSM) without a damping cage for fan applications. Frequency control was used according to the principle of v/f = const. In order to reduce the power consumption of the drive system, the optimal voltage to the motor frequency characteristics was tested in the laboratory. The experimental studies was performed on a laboratory set of a drive consisting of two coupled PMSM machines, where one machine was supplied by a transistor inverter and the other was a passive load. A new criterion based on minimizing the module of stator current vector was proposed and an optimization algorithm in steady states was tested. The results of laboratory tests confirmed the validity of the applied solution for the fan drive.
Źródło:
Archives of Electrical Engineering; 2013, 62, 2; 217-225
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental Aspects of Grid Connected Power Electronic Converters Control
Autorzy:
Chmielewski, T.
Powiązania:
https://bibliotekanauki.pl/articles/123499.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
converters
energy
control system
power transformers
Opis:
This paper presents an unconventional view on power electronic converters control as an important factor in environmental protection. Two distinct features that are provided by the control system, namely harmonics elimination and Fault Ride-Through are addressed herein. The paper provides the discussion on how well designed and robust power converter control can influence the environment in a positive way. One of the shortcomings of power converters is emission of current harmonics which results in supply voltage distortion. The appropriate control minimizes the harmonics content which leads to energy losses reduction, especially in power transformers cores. Fault ride-through is an ability of power converter to remain connected and operating in a grid where the fault occurred. It is of paramount importance for integration of large power renewable energy sources. Shutting down e.g. large wind farm would result in engaging the conventional power plants to fill in the energy production gap.
Źródło:
Journal of Ecological Engineering; 2017, 18, 2; 182-191
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of losses in a hydraulic motor based on the SWSB - 63 motor tests
Autorzy:
Maczyszyn, A.
Powiązania:
https://bibliotekanauki.pl/articles/259391.pdf
Data publikacji:
2010
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
hydrostatic drive and control
energy efficiency
power of energy losses
Opis:
In this paper are compared two models of energy losses: that suggested by Prof. Paszota, Z. in monograph “Energy losses in the hydraulic displacement motors – definitions and relations serving the evaluation of the efficiency of hydrostatic drive” [18] and that of Prof. Balawender, A. in “Energy analysis and methodology of testing of low-speed hydraulic motors” [1]. By using the data obtained from the tests of SWSB-63 hydraulic motors [2] the graphs which illustrate mechanical, volumetric and pressure losses in function of the parameters on which the losses directly depend [18 ], have been elaborated and showed in comparison with the description of such losses in function of the parameters assumed in [1]. The below presented text has been complemented in relation to that published in the monograph [4] and read during the scientific technical conference „Cylinder 2010” organized by the Mining Engineering Centre „Komag”, Gliwice, and held on 20÷22 September 2010 in Rytro, Poland.
Źródło:
Polish Maritime Research; 2010, 4; 46-53
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy characteristics of asynchronous electric drive
Autorzy:
German-Galkin, Sergiej
Sakharov, Vladimir
Tarnapowicz, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/409690.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
energy characteristics
asynchronous electric drive
scalar control methods
vector control methods
Opis:
Energy aspects are fundamental to the design of electric drive systems. This article describes energy performance for asynchronous electric drives based on various control methods. These electric drives comparison shows that vector control methods have a significant advantage over scalar control methods. The asynchronous electric drive mathematical description is based on vector control theory and main component method. Equations, obtained by mathematical description, allow calculating of the currents, voltages and electric power at the output when the electromagnetic torque and speed machine are set. Energy characteristics of the asynchronous drive were obtained with the use of the MATLAB-SIMULINK simulation program.
Źródło:
Management Systems in Production Engineering; 2019, 1 (27); s. 51-54
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intelligent multi-agent system for DC microgrid energy coordination control
Autorzy:
Qaderi-Baban, P.
Menhaj, M. B.
Dosaranian-Moghadam, M.
Fakharian, A.
Powiązania:
https://bibliotekanauki.pl/articles/200811.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multi-agent system
DC microgrid
energy management
coordinated control
voltage control
Opis:
In this paper, an energy coordination control method based on intelligent multi-agent systems (MAS) is proposed for energy management and voltage control of a DC microgrid. The structure of the DC microgrid is designed to realize the mathematical modeling of photovoltaic cells, fuel cells and batteries. A two-layer intelligent MAS is designed for energy coordination control: grid-connection and islanding of a DC microgrid is combined with energy management of PV cells, fuel cells, loads and batteries. In the hidden layer and the output layer of the pro-posed neural network there are 17 and 8 neurons, respectively, and the “logsig” activation function is used for the neurons in the network. Eight kinds of feature quantities and 13 different actions are taken as the input and output parameters of the neural network from the micro-source and the load, and the as the control center agent’s decision-makers. The feasibility of the proposed intelligent multi-agent energy coordination control strategy is verified by MATLAB/Simulink simulation, and three types of examples are analyzed after increasing the load. The simulation results show that the proposed scheme exhibits better performance than the traditional approaches.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 4; 741-748
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Linear matrix inequalities control driven for non-ideal power source energy harvesting
Autorzy:
Ferreira, D. C.
Chavarette, F. R.
Peruzzi, N. J.
Powiązania:
https://bibliotekanauki.pl/articles/281518.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
energy harvesting
efficiency
control
non-ideal excitation
Opis:
The dynamic model of a linear energy harvester excited by a non-ideal power source is coupled to a controller to maximum vibration adjustment. Numerical analysis is taken to evaluate the energy harvested keeping the vibration optimized for the maximum interaction to the energy source using linear matrix inequalities for control driven. The dimensionless power output, actuation power and net output power is determined. As a result, it is possible to verify that the total energy harvested via exogenous vibration using the proposed controller is increased up to 65 times when in comparison to the open loop system.
Źródło:
Journal of Theoretical and Applied Mechanics; 2015, 53, 3; 605-616
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy Consumption of Water Pumping for Selected Control Systems
Autorzy:
Szychta, L.
Powiązania:
https://bibliotekanauki.pl/articles/262584.pdf
Data publikacji:
2006
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
efficiency
energy consumption
control system
water pump
Opis:
The article defines the coefficient of the unit energy consumption of water pumping in pump group. Correct pump operation in pump group are described during cascade control, at variable rotational speeds and in the highest range of efficiency. A method of determining the unit energy consumption of water pumping for these control systems are defined at any daily demand and known pump H(Q) and efficiency curves are plotted at nominal rotational speed.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2006, 12, 1; 21-27
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Graphical presentation of the power of energy losses and power developed in the elements of hydrostatic drive and control system. Part I. Rotational hydraulic motor speed series throttling control systems
Autorzy:
Paszota, Z.
Powiązania:
https://bibliotekanauki.pl/articles/259854.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
hydrostatic drive and control system
power of energy losses
energy efficiency
Opis:
Paper proposes and justifies a diagram of the direction of increase of power stream from the shaft or piston rod of a hydraulic motor to the pump shaft, power increasing as an effect of the imposed power of energy losses in the hydrostatic drive and control system elements. Graphical interpretation of the power of energy losses in the hydrostatic drive and control system elements and also of the power developed by those elements is presented. An individual system with the rotational hydraulic motor speed series throttling control fed by a constant capacity pump cooperating with an overflow valve in a constant pressure system p = cte . pn is analyzed and also an individual system with the rotational hydraulic motor speed series throttling control fed by a constant capacity pump cooperating with an overflow valve controlled in a variable pressure system: p = var, an individual system with the rotational hydraulic motor speed series throttling control fed by a variable capacity pump cooperating with a pressure regulator in a constant pressure system p = cte . pn and an individual system with the rotational hydraulic motor speed series throttling control fed by a variable capacity pump cooperating with the Load Sensing regulator in a variable pressure p = var system.
Źródło:
Polish Maritime Research; 2008, 3; 28-37
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of supplemental lighting during the period of rapid fruit development on the growth, yield, and energy use efficiency in strawberry plant production
Autorzy:
Yoneda, A.
Yasutake, D.
Hidaka, K.
Muztahidin, N.I.
Miyoshi, Y.
Kitano, M.
Okayasu, T.
Powiązania:
https://bibliotekanauki.pl/articles/2082873.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
energy-saving
environmental control
greenhouse
LED
translocation
Opis:
Supplemental lighting techniques in greenhouses can increase plant growth and yield but require substantial amounts of energy. We proposed the use of energy-saving supplemental lighting, which was applied during rapid fruit development when the transport of photosynthetic products into the fruit was active. We measured the physiological responses (photosynthesis, growth, yield) of the strawberry plants with single fruit truss, wherein the following 3 treatments were made: plants were cultivated with no supplemental lighting (control), supplemental lighting throughout the experimental period (normal-light), and supplemental lighting during rapid fruit development (short-light). The period of rapid fruit development corresponded to 33% of the experimental period, and the cumulative light intensity for the short-light treatment was half of that for the normal-light treatment, and twice that of the control treatment. Consequently, the leaf area and dry weight of the plant body were significantly increased following normal-light and short-light treatments compared with the control treatment. The yield for the short-light treatment was also increased and nearly equal to that of the normal-light treatment but no significance to the control treatment. However, the energy use efficiency of the short-light was improved 1.5-fold compared to the normal-light treatment. Thus, shortening the period of supplemental lighting in accordance with the characteristics of fruit development is potentially effective.
Źródło:
International Agrophysics; 2020, 34, 2; 233-239
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Graphical presentation of the power of energy losses and power developed in the elements of hydrostatic drive and control system. Part II. Rotational hydraulic motor speed parallel throttling control and volumetric control systems
Autorzy:
Paszota, Z.
Powiązania:
https://bibliotekanauki.pl/articles/258538.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
hydrostatic drive and control system
power of energy losses
energy efficiency
Opis:
Paper presents graphical interpretation of the power of energy losses in the hydrostatic drive and control system elements and also of the power developed by those elements. An individual system fed by a constant capacity pump, where rotational hydraulic motor speed control is effected by a parallel throttling control system, is analyzed and also a system with the rotational hydraulic motor speed volumetric control by a variable capacity pump, an individual system with a rotational hydraulic motor volumetric speed control by means of a simultaneous change of the pump capacity per one revolution and change of the motor capacity per one revolution, the system operating at the constant pressure in the pump discharge conduit equal to the nominal pressure of the system: pP2 = pn and central system (with situated in parallel and simultaneously operating motors) with volumetric speed control of each rotational hydraulic motor by a motor secondary circuit assembly, the system fed by a pump with variable capacity per one shaft revolution fitted with pressure regulator pP2 = pn.
Źródło:
Polish Maritime Research; 2008, 4; 21-29
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of an energy harvesting MR damper-based vibration reduction system
Autorzy:
Sapiński, B.
Rosół, M.
Węgrzynowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/280877.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
MR damper
energy harvesting
vibration reduction system
control
Opis:
The paper deals with an MR damper-based vibration reduction system with energy harvesting capability. The main part of the system creates an MR damper and a power generator based on an electromagnetic transduction mechanism, which are integrated into a stand- -alone device (so called energy harvesting MR damper). The main objective of the work is to evaluate performance of the proposed vibration reduction system employed in a single DOF mechanical structure. The material outlines the design structure and characteristics of the energy harvesting MR damper, presents the vibration reduction system based on this damper and explores experimental testing of the system implemented in a single DOF mechanical structure. To demonstrate that the devised system is feasible, performance figures maps completed by experimental data are shown.
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 2; 333-344
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation and experimental study in the process of wave energy conversion
Autorzy:
Zhang, W.
Liu, Y.
Powiązania:
https://bibliotekanauki.pl/articles/260115.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
wave energy converter
suitable control technology
experimental verification
Opis:
This article introduces the operating principle of the wave energy device and makes AMEsim simulated analysis in the influence of the amplitude and period of the wave on the output efficient. By using the result of the simulation to optimize design, the article puts forwards a kind of suitable control technology which based on the disclosed amplitude and period of the wave to control the check valve, invoking the motor in different levels of efficiency. This kind of technology aims to solve the problem which includes low efficiency and high start wave of the wave energy device. The result is verified by the physical experiment, which lays the foundation for the implementation of marine engineering. The established methods of simulation model and analysis results are expected to be useful to designing and manufacturing of wave energy converter.
Źródło:
Polish Maritime Research; 2016, S 1; 123-130
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of minimum energy control on steel loss in VR stepper motor
Autorzy:
Bernat, J.
Kołota, J.
Stępień, S.
Powiązania:
https://bibliotekanauki.pl/articles/141426.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy consumption
lamination
finite element method
optimal control
Opis:
This research presents a 3D FE method for the simulation of the variable reluctance stepper motor dynamics. The proposed model is used to obtain the optimal minimum energy control law that minimizes the energy injected by the controller. The method is based on the strong coupling of field - circuit equations and extended to eddy current, motion and nonlinearity problem. The linearization technique for the coupled problem is presented. Also the lamination of the motor core is considered. In the paper the open - loop control problem is analyzed. The proposed model is validated by the comparison with measurements. Next, to demonstrate the effectiveness of the proposed optimal minimum energy control method is applied. In both cases, the examination of the variable reluctance stepper motor dynamics and the steel loss in the core is presented and compared.
Źródło:
Archives of Electrical Engineering; 2013, 62, 3; 439-447
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The opportunities for getting energy savings in the hydrostatic drive system
Autorzy:
Skorek, G.
Powiązania:
https://bibliotekanauki.pl/articles/246878.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
energy efficiency
energy losses
power
power of losses
hydrostatic system
control structures
Opis:
Full picture of the energy losses in a hydrostatic drive system is a picture of the power of energy losses in the system elements. Paper presents the areas of the power fields of energy losses occurring in the elements of some hydraulic systems with different structures of the hydraulic motor speed control. Proposed graphical interpretation allows analysing and comparing different hydrostatic drive systems. In many constructed and manufactured machines currently used hydrostatic drive systems or electro hydrostatic systems of varying complexity. Today, the need for energy-efficient systems forces to some extent the development and improvement of computational methods using computer aided relating to energy efficiency systems. Hydrostatic systems especially in modern machines play a very important role. Actuators, such as hydraulic motors, hydraulic cylinders is commonly used for a long time, including on machines and equipment land and marine. Unawareness of proportions of the energy, volumetric, pressure and mechanical losses in elements is often the case. Problems connected with energy efficiency are essential for improvement of functionality and quality of hydrostatic drive systems, characterised by unquestioned advantages. Energy efficiency of hydrostatic transmissions, particularly those with throttling control of the motor speed, and also efficiency of the hydraulic servomechanism systems may be in fact higher than the values most often quoted in publications on the subject.
Źródło:
Journal of KONES; 2014, 21, 2; 273-280
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unified power quality conditioner in a grid-connected photovoltaic system
Autorzy:
Cavalcanti, M. C.
Azevedo, G. M.
Amaral, B. A.
Neves, F. A.
Powiązania:
https://bibliotekanauki.pl/articles/262717.pdf
Data publikacji:
2006
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
control systems
converters
energy conversion
photovoltaic power systems
power quality
solar energy
Opis:
This paper presents a system that provides photovoltaic generation as well as the functions of a unified power quality conditioner. The system can be controlled for current harmonics and reactive power compensation simultaneously by using a converter operating as active shunt filter. The other converter is used as active series filter and it compensates voltage harmonics or voltage sags and swells. Using only an inverter in photovoltaic energy conversion process, the system presents increased efficiency when compared to the conventional systems. The synchronous reference frame method is used to control the three-phase converters. Simulation results demonstrate the good performance of the proposed configuration. Experimental results corresponding to the operation of the series filter as voltage sag compensator are presented.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2006, 12, 2; 59-69
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 183

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