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Tytuł:
Design and construction of a polygon-connected autotransformer-based 36-pulse AC-DC converter for power quality improvement in retrofit applications
Autorzy:
Abdollahi, R.
Powiązania:
https://bibliotekanauki.pl/articles/202052.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
AC-DC converter
polygon autotransformer
power quality
36-pulse rectifier
direct torque controlled induction motor drive (DTCIMD)
konwerter AC-DC
jakość energii
prostownik impulsowy
DTCIMD
Opis:
This paper presents the design and analysis of a polygon connected autotransformer based 36-phase AC-DC converter which supplies direct torque controlled induction motor drives (DTCIMD’s) in order to have better power quality conditions at the point of common coupling. The proposed converter output voltage is accomplished via two paralleled eighteen-pulse AC-DC converters each of them consisting of nine-phase diode bridge rectifier. An autotransformer is designed to supply the rectifier. The design procedure of magnetics is in a way such that makes it suitable for retrofit applications where a six-pulse diode bridge rectifier is being utilized. The proposed structure improves power quality criteria at ac mains and makes them consistent with the IEEE-519 standard requirements for varying loads. Furthermore, near unity power factor is obtained for a wide range of DTCIMD operation. A comparison is made between 6-pulse and proposed converters from view point of power quality indices. Results show that input current total harmonic distortion (THD) is less than 4% for the proposed topology at variable loads. A laboratory prototype of the proposed Polygon-Connected autotransformer-based 36-pulse AC-DC converter is developed and test results are presented to validate the developed design procedure and the simulation models of this AC-DC converter under varying loads.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 2; 353-362
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of delta/polygon-connected transformer-based 36-pulse ac-dc converter for power quality improvement
Autorzy:
Abdollahi, R.
Powiązania:
https://bibliotekanauki.pl/articles/140490.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
jakość energii
prostownik 36-pulsowy
bezpośredni moment obrotowy silnika indukcyjnego sterowanego napędem
AC-DC converter
delta/polygon transformer
power quality
direct torque controlled induction motor drive (DTCIMD)
Opis:
Design of a delta/polygon-connected autotransformer based 36-pulse ac-dc converter is presented in this paper. The 36-pulse topology is obtained via two paralleled eighteen-pulse ac-dc converters each of them consisting of a nine-phase (nine-leg) diode bridge rectifier. For independent operation of paralleled diode-bridge rectifiers, two interphase transformers (IPT) is designed and implemented. A transformer is designed to supply the rectifier. The design procedure of magnetics is in a way such that makes it suitable for retrofit applications where a six-pulse diode bridge rectifier is being utilized. The proposed structure has been implemented and simulated using Matlab/Simulink software under different load conditions. Simulation results confirmed the significant improvement of the power quality indices (consistent with the IEEE-519 standard requirements) at the point of common coupling. Furthermore, near unity power factor is obtained for a wide range of DTCIMD operation. A comparison is made between 6-pulse and proposed converters from view point of power quality indices. Results show that input current total harmonic distortion (THD) is less than 4% for the proposed topology at variable loads.
Źródło:
Archives of Electrical Engineering; 2012, 61, 2; 277-292
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A High Gain Single Switch DC-DC Converter with Double Voltage Booster Switched Inductors
Autorzy:
Addagatla, Nagaraju
Boini, Rajender
Powiązania:
https://bibliotekanauki.pl/articles/2201925.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
multilevel converter
boost converter
DC-DC converter
high gain converters
Opis:
The research for novel power conversion topologies and the development of cutting-edge power component technologies are driven by the demand for renewable and much more efficient electricity generation, delivery, and conversion. Simulation and Analysis High Voltage Gain DC-DC Converter with Double Voltage Booster Switched Inductor for PV Applications are analyzed in this paper. Multilevel boost converter topologies recently reintroduced, are gaining popularity as a solution for industrial and transportation power systems because they enable the use of innovative, efficient, but relatively low voltage low-voltage devices at greater voltage and power levels. there is only one power switch on the converter that is planned here, three diodes, two capacitors, and two inductors to achieve ultra-high gain with better efficiency. High voltage gain, minimal switch stress, and the ability to lessen input-current ripple and capacitor voltage ripple are all benefits of the topology. When it switches complementary, the capacitors' ripple is reduced, which lowers the size requirement for the capacitors. A 12V, 500 watts prototype was analyzed, simulated and designed. at a duty cycle of 0.75 it is achieved high DC-DC gain i.e 19 and efficiency 93%. The practicality of the converter will be demonstrated by the close agreement between the analysis and simulation findings.
Źródło:
Advances in Science and Technology. Research Journal; 2023, 17, 2; 1--11
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comprehensive Review on Bidirectional Traction Converter for Electric Vehicles
Autorzy:
Anbazhagan, Lavanya
Ramiah, Jegatheesan
Krishnaswamy, Vijayakumar
Jayachandran, Divya Navamani
Powiązania:
https://bibliotekanauki.pl/articles/226122.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electric vehicle
isolated
non-isolated
bidirectional dc-dc converter
controller
Opis:
In this fast-changing environmental condition, the effect of fossil fuel in vehicle is a significant concern. Many sustainable sources are being studied to replace the exhausting fossil fuel in most of the countries. This paper surveys the types of electric vehicle’s energy sources and current scenario of the on-road electric vehicle and its technical challenges. It summarizes the number of state-of-the-art research progresses in bidirectional dc-dc converters and its control strategies reported in last two decades. The performance of the various topologies of bidirectional dc-dc converters is also tabulated along with their references. Hence, this work will present a clear view on the development of state-of-the-art topologies in bidirectional dc-dc converters. This review paper will be a guide for the researchers for selecting suitable bidirectional traction dc-dc converters for electric vehicle and it gives the clear picture of this research field.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 4; 635-649
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przetworniki termoelektryczne AC/DC jako wzorce napięcia przemiennego
AC/DC thermal transfer converters as AC voltage standards
Autorzy:
Barański, A.
Ratajczak, J.
Zawadzki, P.
Powiązania:
https://bibliotekanauki.pl/articles/153578.pdf
Data publikacji:
2007
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
przetworniki termoelektryczne AC/DC
napięcie przemienne
wartość skuteczna
AC/DC thermal transfer converter
AC voltage
true RMS
Opis:
Pomiary napięcia przemiennego w Głównym Urzędzie Miar są odnoszone do wzorców odtwarzanych przy napięciu stałym, wg zasady komparacji niejednoczesnej. W charakterze wzorca odniesienia przy napięciu przemiennym stosowane są zestawy przetworników termoelektrycznych. Struktura wzorca, dzięki różnym konfiguracjom, umożliwia pokrycie potrzeb wzorcowania tej wielkości do 1200 V i częstotliwości do 1 MHz. Omówiono istotę i źródła błędu komparacji, oraz sposób jego kompensacji. Schemat interkomparacji wzorca umożliwia odniesienie całej dziedziny do jednego przetwornika bazowego 1 VAC.
AC voltage measurements at the Central Office of Measures are being referenced to the standards restored at the DC voltage according to the principle of anti-coincidental comparison. As an AC voltage reference standard sets of thermoelectric converters are being used. Thanks to different configurations,the structure of the standard,enables covering the calibration needs of this quantity up to 1200 V at the frequency of up to 1 MHz. The nature and sources of comparison error were discussed as well as the way of its compensation. The schematic diagram of intercomparison enables referencing the whole field to one 1 VAC base converter.
Źródło:
Pomiary Automatyka Kontrola; 2007, R. 53, nr 9 bis, 9 bis; 38-41
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania symulacyjne wysokonapięciowej przetwornicy DC/DC
Simulation of high-voltage dc/dc converter
Autorzy:
Blecharz, K.
Powiązania:
https://bibliotekanauki.pl/articles/268676.pdf
Data publikacji:
2013
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
przetwornica DC/DC
przetwornica wysokiego napięcia
transformator dużej częstotliwości
three-level converter
DC/DC converter
high voltage converter
Opis:
W artykule zaprezentowano wyniki badań symulacyjnych przekształtnika energoelektronicznego typu DC/DC działającego w układzie niepełnego mostka z transformatorem izolacyjnym pracującym przy dużej częstotliwości. Badania symulacyjne wykonano posługując się pakietem MatlabSimulink/SimPowerSystems. Omówiono problemy zastosowania wysokonapięciowych tranzystorów z izolowaną bramką do konstrukcji przekształtników wysokiego napięcia. W pracy pokazano charakterystyczne przebiegi symulacyjne prądów i napięć dla wybranej topologii przetwornicy.
This paper presents the results of simulation of power electronic DC/DC converter operating in half-bridge configuration with high frequency transformer. Simulation studies were performed using Matlab-Simulink software. The article discusses the problems of the application of high voltage transistors with insulated gate to the construction of highvoltage converters. Typical voltage and current waveforms for the selected converter topology are shown.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2013, 36; 31-34
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza stanów dynamicznych przekształtnika DC/DC sterowanego metodą PWM
Analysis of dynamic states of a DC/DC converter with the PWM control scheme
Autorzy:
Bogdan, A.
Citko, T.
Powiązania:
https://bibliotekanauki.pl/articles/158195.pdf
Data publikacji:
2004
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
analiza stanów dynamicznych
przekształtnik
przekształtnik DC/DC
analysis of dynamic state
DC/DC converter
PWM control scheme
Opis:
W artykule przedstawiono liniowy model dynamiczny przekształtnika impulsowego sterowanego metodą PWM w odniesieniu do zmiennych uśrednionych. Na konkretnym przykładzie został zaprezentowany dobór regulatora w napięciowej pętli regulacyjnej. Dynamiczne właściwości układu zostały potwierdzone za pomocą jego symulacji w programie PSIPICE.
In the paper a linear dynamic model of an impulse DC/DC converter is presented and discussed. The converter is controlled with the use of the PWM (pulse width modulation) method, applied to the averaged variables. The simulation example presents the process of tuning the controller, which works in the voltage control loop. dynamic properties of the system have been extensively investigated in the series of numerical experiments, performed in the PSPICE simulation package.
Źródło:
Pomiary Automatyka Kontrola; 2004, R. 50, nr 10, 10; 33-36
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of an open-switch fault detection algorithm for a three-phase interleaved DC–DC boost converter in a photovoltaic system
Autorzy:
Boudjellal, Bilal
Benslimane, Tara
Powiązania:
https://bibliotekanauki.pl/articles/27309944.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
DC–DC converters
fault diagnosis
interleaved boost converter
open switch fault
photovoltaic (PV) system
Opis:
This paper presents a novel fault detection algorithm for a three-phase interleaved DC–DC boost converter integrated in a photovoltaic system. Interleaved DC–DC converters have been used widely due to their advantages in terms of efficiency, ripple reductions, modularity and small filter components. The fault detection algorithm depends on the input current waveform as a fault indicator and does not require any additional sensors in the system. To guarantee service continuity, a fault tolerant topology is achieved by connecting a redundant switch to the interleaved converter. The proposed fault detection algorithm is validated under different scenarios by the obtained results.
Źródło:
Archives of Electrical Engineering; 2023, 72, 3; 661--676
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The DC-side active filter with dual-buck full-bridge inverter for wind generators
Autorzy:
Chen, X-Q.
Zhao, S-W.
Wang, Y.
Powiązania:
https://bibliotekanauki.pl/articles/141358.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multi-pulse ac-dc converter
auto-transformer
harmonic suppression
DC-side active filter
dual-buck full-bridge inverter
Opis:
This paper proposes a new dc-side active filter for wind generators that combines 12-pulse polygon auto-transformer rectifier with dc-side current injection method and dual-buck full-bridge inverter having not the “shoot-through” problem in conventional bridge-type inverters, and therefore this system with the character low harmonic distortion and high reliability. The proposed dc-side active filter is realized by using dual-buck full bridge converter, which directly injects compensation current at dc-side of two six-pulse diode bridges rectifiers. Compared with the conventional three-phase active power filter at ac-side, the system with the dc-side active filter draws nearly sinusoidal current by shaping the diode bridges output current to be triangular without using the instantaneous reactive power compensation technology, only using simple hysteretic current control, even though under load variation and unbalanced voltage disturbances, and while an acceptable linear approximation to the accurate waveform of injection current is recommended. The performance of the system was simulated using MATLAB/Simulink, and the possibility of the dc-side active filter eliminating current harmonics was confirmed in steady and transient states. The simulation results indicate, the system has a total harmonic distortion of current reduced closely to 1%, and a high power factor on the wind generator side.
Źródło:
Archives of Electrical Engineering; 2018, 67, 2; 263--277
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Boosting resonant switched-capacitor voltage tripler
Autorzy:
Chojowski, Maciej
Sosnowski, Robert
Baszyński, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/24202737.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
boost topology
DC–DC converters
switched capacitor converter
Opis:
This elaboration presents the concept of a unidirectional DC–DC switchedcapacitor converter operating as a voltage tripler. The system consists of two resonant cells with switched capacitors and chokes. This proposed converter topology achieves low voltages on semiconductor switches (diodes and transistors) compared to the classic SC series-parallel converter or the boost topology. The output voltage on the capacitors is reduced in the proposed converter because it is divided into two series-connected capacitors with asymmetric distribution. The presented results describe the analytical description of the system operation and the analytical equation for semiconductor currents. A simulation and experimental results have been performed. The system efficiency and three voltage gain values were measured in the experimental setup. The efficiency measured was also compared with the analytical determination curve for loss analysis and further converter optimization.
Źródło:
Archives of Electrical Engineering; 2023, 72, 2; 373--389
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extended Feedback Linearisation Control of Non-ideal DCDC Buck Converter in Continuous-conduction Mode
Autorzy:
Csizmadia, Miklos
Kuczmann, Miklos
Powiązania:
https://bibliotekanauki.pl/articles/2175943.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
DC-DC buck converter
feedback linearisation
inrush current
parasitics
Ackermann
Opis:
This paper presents an extended form of Feedback Linearisation Control (FBLC), which is tested in a non-ideal buck converter in Continuous-conduction Mode (CCM). The FBLC is often used in power electronics to control a non-linear system, due to its advantageous properties. The application of the error integrator shows better steady-state and transient properties, such as a decrease of inrush current. The linearised system has been controlled by the pole placement and the technique is illustrated through an example and simulated via Matlab. The results have been compared by using a classical PID controller, allowing the benefits of FBLC to be highlighted.
Źródło:
Power Electronics and Drives; 2022, 7, 42; 1--8
2451-0262
2543-4292
Pojawia się w:
Power Electronics and Drives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Single sensor based photovoltaic maximum power point tracking technique for solar water pumping system
Autorzy:
Daoud, A.
Midoun, A.
Powiązania:
https://bibliotekanauki.pl/articles/262763.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
MPPT
boost converter
rmicrocontroller
DC motor-pump
flow rate
Opis:
The development of photovoltaic (PV) panels has made solar-powered pumps a reality. The pump drivers are usually direct-current (DC) motors which are fed by power electronic converters with maximum power point tracking (MPPT) to extract the whole energy that the PV panels can generate depending on the environmental conditions including irradiation and temperature. The implementation of MPPT algorithm essentially involves sensing both an input current and an input voltage. Understandably, such realization is expensive. In this paper, a solar PV water pumping system based on DC to DC converter as MPPT module is considered. The system consists of a PV array, a DC to DC boost converter and the DC motor coupled to a centrifugal pump. A proposed method is employed to seek the maximum power point using the flow rate obtained from a single sensor. A comparison with conventional hill climbing technique is included in experimental results to prove feasibility of the proposed method.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2008, 14, 2; 69-72
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spider monkey optimization (SMO) - lattice Levenberg-Marquardt recursive least squares based grid synchronization control scheme for a three-phase PV system
Autorzy:
Dash, Dipak Kumar
Sadhu, Pradip Kumar
Subudhi, Bidyadhar
Powiązania:
https://bibliotekanauki.pl/articles/1845534.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solar PV array
VSC
SMO
DC-DC converter
lattice Levenberg–Marquardt recursive least squares
hysteresis current controller
Opis:
This paper presents a new grid integration control scheme that employs spider monkey optimization technique for maximum power point tracking and Lattice Levenberg Marquardt Recursive estimation with a hysteresis current controller for controlling voltage source inverter. This control scheme is applied to a PV system integrated to a three phase grid to achieve effective grid synchronization. To verify the efficacy of the proposed control scheme, simulations were performed. From the simulation results it is observed that the proposed controller provides excellent control performance such as reducing THD of the grid current to 1.75%.
Źródło:
Archives of Control Sciences; 2021, 31, 3; 707-730
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spider monkey optimization (SMO) - lattice Levenberg-Marquardt recursive least squares based grid synchronization control scheme for a three-phase PV system
Autorzy:
Dash, Dipak Kumar
Sadhu, Pradip Kumar
Subudhi, Bidyadhar
Powiązania:
https://bibliotekanauki.pl/articles/1845508.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solar PV array
VSC
SMO
DC-DC converter
lattice Levenberg–Marquardt recursive least squares
hysteresis current controller
Opis:
This paper presents a new grid integration control scheme that employs spider monkey optimization technique for maximum power point tracking and Lattice Levenberg Marquardt Recursive estimation with a hysteresis current controller for controlling voltage source inverter. This control scheme is applied to a PV system integrated to a three phase grid to achieve effective grid synchronization. To verify the efficacy of the proposed control scheme, simulations were performed. From the simulation results it is observed that the proposed controller provides excellent control performance such as reducing THD of the grid current to 1.75%.
Źródło:
Archives of Control Sciences; 2021, 31, 3; 707-730
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A dual inductor-fed boost converter with an auxiliary transformer and voltage doubler
Autorzy:
Dawidziuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/201526.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DC/DC boost converter
current-fed
dual inductor-fed
auxiliary transformer
voltage doubler
photovoltaic systems
Opis:
This paper presents a dual inductor-fed boost converter with an auxiliary transformer and voltage doubler for sustainable energy power converters. The new topology integrates a two-phase boost converter and a dual inductor-fed boost converter. The energy stored and transferred by both inductors can attain a wide input-voltage and load range which uses a constant switching frequency, by controlling the time duration of the simultaneous conduction of the two switches. Among other current-fed type boost converters the presented topology is attractive due to the high voltage conversion ratio, less stress on the components and less switch conduction loss. To verify the feasibility of this topology, the principles of operation, theoretical analysis, and experimental waveforms are presented for a 1 kW prototype.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 787-791
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
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