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    Wyświetlanie 1-7 z 7
    Tytuł:
    Research on torque ripple suppression of brushless DC motor based on PWM modulation
    Autorzy:
    Daode, Zhang
    Wei, Lingkang
    Hu, Xinyu
    Zhang, Chupeng
    Li, Xuesheng
    Powiązania:
    https://bibliotekanauki.pl/articles/141390.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    DC brushless motor
    electric propulsion
    fuzzy PID control
    torque ripple
    PWM_ON_PWM modulation
    Opis:
    Brushless DC motors are often used as the power sources for modern ship electric propulsion systems. Due to the electromagnetic torque ripple of the motor, the traditional control method reduces the drive performance of the motor under load changes. Aiming at the problem of the torque ripple of the DC brushless motor during a noncommutation period, this paper analysis the reasons for the torque ripple caused by pulsewidth modulation (PWM), and proposes a PWM_ON_PWM method to suppress the torque ripple of the DC brushless motor. Based on the mathematical model of a DC brushless motor, this method adopts a double closed-loop control method based on fuzzy control to suppress the torque ripple of the DC brushless motor. The fuzzy control technology is integrated into the parameter tuning process of the proportional–integral–derivative (PID) controller to effectively improve the stability of the motor control system. Under the Matlab/Simulink platform, the response performance of different PID control methods and the torque characteristics of different PWM modulation methods are simulated and compared. The results show that the fuzzy adaptive PID control method has good dynamic response performance. It is verified that the PWM_ON_PWM modulation method can effectively suppress the torque ripple of the motor during non-commutation period, improve the stability of the double closed-loop control system and meet the driving performance of the motor under different load conditions.
    Źródło:
    Archives of Electrical Engineering; 2019, 68, 4; 843-858
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of the pulse width modulation on the temperature distribution in the armature of a solenoid valve
    Autorzy:
    Goraj, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/266168.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    solenoid valve
    armature
    inductive power
    PWM
    temperature
    elektrozawór
    armatura
    zasilanie indukcyjne
    Opis:
    In order to estimate the inductive power set in the armature of the high-speed solenoid valve (HSV) during the open loop control (OLC) using pulse width modulation (PWM) an analytical explicit formula has been derived. The simplifications taken both in the geometry and in the physical behavior of the HSV were described. The inductive power was calculated for different boundary conditions and shown as a function of the frequency of the coil current. The power set in the armature was used as an input to the thermal calculation. The thermal calculation had an objective to estimate the time dependent temperature distribution in the armature of the HSV. All the derivation steps were presented and the influence of different boundary conditions was shown and discussed. The increase of the temperature during the heating with inductive power has been evaluated both in the core and on the side surface of the HSV.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2015, 20, 4; 773-786
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Averaged models of pulse-modulated DC-DC power converters. Part II. Models based on the separation of variables
    Autorzy:
    Janke, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/140855.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    power converters
    pulse width modulation (PWM)
    BUCK
    buck-boost
    BOOST
    averaged models
    Opis:
    The separation of variables approach to formulate the averaged models of DC-DC switch-mode power converters is presented in the paper. The proposed method is applied to basic converters such as BUCK, BOOST and BUCK-BOOST. The ideal converters or converters with parasitic resistances, working in CCM and in DCM mode are considered. The models are presented in the form of equation systems for large signal, steady-state and small-signal case. It is shown, that the models obtained by separation of variables approach differ in some situations from standard models based on switch averaging method.
    Źródło:
    Archives of Electrical Engineering; 2012, 61, 4; 633-654
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An active power filter based on a hybrid converter topology – Part 1
    Autorzy:
    Gwóźdź, Michał
    Ciepliński, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2090725.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    shunt active power filter
    pulse width modulation
    PWM
    sigma-delta modulator
    silicon carbide
    bocznikowy filtr mocy czynnej
    modulacja szerokości impulsu
    modulator sigma-delta
    węglik krzemu
    Opis:
    This paper presents a concept of a shunt active power filter, which is able to provide more precise mapping of its input current drawn from a power line in a reference signal, as compared to a typical filter solution. It can be achieved by means of an interconnection of two separate power electronics converters making, as a whole, a controlled current source, which mainly determines the quality of the shunt active filter operation. One of these power devices, the “auxiliary converter”, corrects the total output current, being a sum of output currents of both converters, toward the reference signal. The rated output power of the auxiliary converter is much lower than the output power of the main one, while its frequency response is extended. Thanks to both these properties and the operation of the auxiliary converter in a continuous mode, pulse modulation components in the filter input current are minimized. Benefits of the filter are paid for by a relatively small increase in the complexity and cost of the system. The proposed solution can be especially attractive for devices with higher output power, where, due to dynamic power loss in power switches, a pulse modulation carrier frequency must be lowered, leading to the limitation of the “frequency response” of the converter. The concept of such a system was called the “hybrid converter topology”. In the first part of the paper, the rules of operation of the active filter based on this topology are presented. Also, the results of comparative studies of filter simulation models based on both typical, i.e. single converter, and hybrid converter topologies, are discussed.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; e136218, 1--10
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An active power filter based on a hybrid converter topology – Part 1
    Autorzy:
    Gwóźdź, Michał
    Ciepliński, Łukasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2173586.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    shunt active power filter
    pulse width modulation
    PWM
    sigma-delta modulator
    silicon carbide
    bocznikowy filtr mocy czynnej
    modulacja szerokości impulsu
    modulator sigma-delta
    węglik krzemu
    Opis:
    This paper presents a concept of a shunt active power filter, which is able to provide more precise mapping of its input current drawn from a power line in a reference signal, as compared to a typical filter solution. It can be achieved by means of an interconnection of two separate power electronics converters making, as a whole, a controlled current source, which mainly determines the quality of the shunt active filter operation. One of these power devices, the “auxiliary converter”, corrects the total output current, being a sum of output currents of both converters, toward the reference signal. The rated output power of the auxiliary converter is much lower than the output power of the main one, while its frequency response is extended. Thanks to both these properties and the operation of the auxiliary converter in a continuous mode, pulse modulation components in the filter input current are minimized. Benefits of the filter are paid for by a relatively small increase in the complexity and cost of the system. The proposed solution can be especially attractive for devices with higher output power, where, due to dynamic power loss in power switches, a pulse modulation carrier frequency must be lowered, leading to the limitation of the “frequency response” of the converter. The concept of such a system was called the “hybrid converter topology”. In the first part of the paper, the rules of operation of the active filter based on this topology are presented. Also, the results of comparative studies of filter simulation models based on both typical, i.e. single converter, and hybrid converter topologies, are discussed.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; art. no. e136218
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Implementation of PID on PIC24F series microcontroller for speed control of a DC motor using MPLAB and Proteus
    Autorzy:
    Aslam, S.
    Hannan, S.
    Sajjad, U.
    Zafar, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/102984.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    proportional integral derivative controller
    pulse width modulation (PWM)
    linear quadratic regulator
    peripheral interface controller
    MPLAB
    proteus
    duty cycle
    Opis:
    Speed control of a DC motor is critical in most industrial systems where accuracy and protection are of essence. This paper presents simulations of Proportional Integral Derivative Controller (PID) on a 16-bit PIC 24F series microcontroller for speed control of a DC motor in the presence of load torque. The PID gains have been tuned by Linear Quadratic Regulator (LQR) technique and then it is implemented on a microcontroller using MPLAB, and finally simulated for speed control of a DC motor in Proteus Virtual System Modeling (VSM) software. Proteus has built in feature to add load torque to a DC motor so simulation results have been presented in three cases speed of DC motor is controlled without load torque, with 25% load torque and with 50% load torque. In all three cases PID effectively controls the speed of DC motor with minimum steady state error.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 31; 40-50
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estymacja napięcia niezrównoważenia w obwodzie pośredniczącym falownika trójpoziomowego NPC na podstawie analizy prądów wyjściowych
    Evaluation of the neutral-point voltage in the three-level NPC inverter based on analysis of output currents
    Autorzy:
    Szczepankowski, P.
    Nieznański, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/154081.pdf
    Data publikacji:
    2007
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    trójpoziomowy falownik napięcia
    modulacja szerokości impulsów
    stabilizacja napięcia punktu środkowego
    three-level NPC inverter
    pulse width modulation (PWM)
    control of the DC-link midpoint voltage
    Opis:
    Zaproponowano prostą i skuteczną metodę wyznaczania wartości napięcia niezrównoważenia w obwodzie pośredniczącym trójpoziomowego falownika NPC (ang. Neutral-Point-Clamped). Zastosowanie proponowanej metody nie wymaga dodatkowych czujników pomiarowych, a nakłady obliczeniowe na realizację algorytmu są niewielkie. Do wyznaczania napięcia niezrównoważenia wykorzystuje się informacje zawarte w mierzonych prądach wyjściowych falownika. Wymagana jest znajomość impedancji obciążenia. Przedstawiono wyniki badań symulacyjnych i laboratoryjnych potwierdzających prawidłowe działanie proponowanej metody.
    A simple and effective method is proposed for evaluating the neutral-point voltage in the three-level neutral-point-clamped (NPC) inverter. The method does not require extra sensors, and the use of computing resources is limited. The neutral-point voltage is estimated based on the current measurements. The proposed approach necessitates the knowledge of the load impedance. Sample simulation and experimental results are provided, confirming satisfactory working of the proposed method.
    Źródło:
    Pomiary Automatyka Kontrola; 2007, R. 53, nr 4, 4; 48-51
    0032-4140
    Pojawia się w:
    Pomiary Automatyka Kontrola
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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