Topic
PWM rectifier
About: PWM rectifier is a research topic. Over the lifetime, 2254 publications have been published within this topic receiving 25614 citations.
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07 Nov 2011
TL;DR: In this paper, a closed-loop control strategy based on indirect space vector modulation is proposed and the validity is verified for automotive power supply systems, which ensures that the output voltage can be regulated tight at different loads and high quality input current can be achieved.
Abstract: This paper presents a bi-directional 42V PowerNet AC-DC matrix converter for automotive power supply systems, replacing the conventional PWM rectifier and DC-DC converter. In the new proposed structure, large DC bus capacitors are no longer needed. The AC-DC matrix converter converts three-phase AC power into the desired output of 42V DC via single power stage. Therefore, the converter has higher energy density than conventional rectifier circuits. A closed-loop control strategy based on indirect space vector modulation is proposed and the validity is verified. The strategy ensures that the output voltage can be regulated tight at different loads and high-quality input current can be achieved.
8 citations
03 Mar 2013
TL;DR: The paper first analyzes the mathematical model of three-phase voltage-source PWM rectifier and then introduces double closed-loop control of voltage and current system, in which the active and reactive power can be controlled independently.
Abstract: The paper first analyzes the mathematical model of three-phase voltage-source PWM rectifier and then introduces double closed-loop control of voltage and current system, in which the active and reactive power can be controlled independently PWM rectifier control system is built based on the DSP2812 after modeling and simulating in MATLAB / SIMULINK environment The result shows that the system has the characteristic of good anti-interference performance and fast dynamic response Keywords-scene; PWM rectifier; feed-forward decoupling control; closed-loop control
8 citations
01 Oct 2015
TL;DR: In this article, an active disturbance rejection control (ADRC) and proportional-resonant (PR) control strategy was proposed to reduce the grid-connected harmonic current and enhance the ability of disturbance rejection.
Abstract: For single-phase pulse width modulation (PWM) rectifier, there exist second-order ripple voltage on DC bus, and it results that the grid-connected current exist odd order harmonic. Generally, a bulk capacitor or filter installed in the DC link and low-pass filter in the controller is needed, which is not conductive to improving the power density and control performance. This paper proposed an novel control strategy based on active disturbance rejection control (ADRC) and proportional-resonant (PR) control to reduce the grid-connected harmonic current and enhance the ability of disturbance rejection. Simulation is provided for verification purposes.
8 citations
01 Oct 2011
TL;DR: In this article, a novel DPC strategy of double hysteresis comparator bands and multiple switching tables (DM-DPC) is proposed to alleviate the periodic fluctuations of reactive power, the poor quality of ac current and the long steady-state response time, caused by the traditional direct power control in three-phase voltage source (Pulse Width Modulation)PWM rectifier.
Abstract: In order to alleviate the problems, such as the periodic fluctuations of reactive power, the poor quality of ac current and the long steady-state response time, caused by the traditional direct power control(DPC) in three-phase voltage source (Pulse Width Modulation)PWM rectifier, a novel DPC strategy of double hysteresis comparator bands and multiple switching tables (DM-DPC) is put forward in this paper According to the instantaneous errors between the commanded and estimated active and reactive power, the different switching table and hysteresis comparator band are selected in the new strategy The effect intensity table, which is used to increase/decrease active and reactive powers through switching state vectors in different sector, is summarized Based on the effect intensity table, four switching tables are provided The simulation model is constructed to compare the results obtained from both the proposed and the traditional direct power control strategy The simulation results show that, by using the novel scheme, not only the reactive power becomes more stable, but the ac current harmonic total distortion rate (THD) and the time that the system takes to reach the steady-state are also reduced to 335%, 625% of the classical one respectively
8 citations
01 Oct 2012
TL;DR: In this paper, a power electronic system used to charge electric vehicle (EV) batteries is described, where two power converter units are adopted to achieve the requirements of high power factor and efficiency, two PWM rectifier with direct power control based on space vector PWM (DPC-SVM) in front-end and full-bridge (FB) converter with phase-shifted zero-voltage zero-current-switching (ZVZCS) in back-end.
Abstract: This paper describes a power electronic system used to charge electric vehicle (EV) batteries. To achieve the requirements of high power factor and efficiency, two power converter units are adopted. The PWM rectifier with direct power control based on space vector PWM (DPC-SVM) in the front-end and full-bridge (FB) converter with phase-shifted zero-voltage zero-current-switching (ZVZCS) in the back-end are applied. Decoupling control for instantaneous active and reactive powers of the grid is realized. Experimental results in 8kW prototype show that during the whole charging process, the system efficiency is higher than 85.3% and the input power factor is higher than 99.4%.
8 citations