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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28 May 2016
TL;DR: A control system with double close-loops of voltage and current is proposed based on the synchronous rotating reference frame, and this control scheme can realize decoupled control of the three phase PWM rectifiers.
Abstract: The mathematical model of three-phase voltage source PWM rectifier is established in the dq rotating frame. Aiming at the highly coupled of the active and reactive current of three-phase PWM rectifier, a control system with double close-loops of voltage and current is proposed based on the synchronous rotating reference frame. A sliding-mode control algorithm for the out-voltage-loop is proposed, and the exact feedback linearization method is designed for the current loop. The whole system is simulated and experimented. The whole system has good robustness, and this control scheme can realize decoupled control of the three phase PWM rectifiers. The power factor of the system is kept at unity. The PWM rectifier has constant output voltage, and the whole system has good dynamic and static performance.
5 citations
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06 Feb 2008
TL;DR: In this paper, an inverter energy-stream circulation testing device comprising a DC power supply, a trialed inverter, an inductor, a voltage sensor, a current sensor, and a PWM rectifier and a control cabinet, all of which are assembled to realize the testing functions of the inverter.
Abstract: The present invention discloses an inverter energy-stream circulation testing device comprising a DC power supply, a trialed inverter, an inductor, a voltage sensor, a current sensor, a PWM rectifier and a control cabinet, all of which are assembled to realize the testing functions of the inverter. Each cabinet of the device is fixed on the ground, the trialed inverter is fixed on a testing platform, the inductor is arranged on an inductance platform, the main circuit of the PWM rectifier is arranged in an AC cabinet via an iron rack; the AC end of the trialed inverter is connected with one end of the inductor, the DC end of the converter is connected with the output end of a DC power supply; the AC end of the PWM rectifier is connected with the other end of the inductor, the DC end of the PWM rectifier is connected with the output end of an AC power supply; the DC sides of two converters, where one is tested and another is loaded, are connected with each other; the AC end of the DC power supply is connected with the electrical source. The device resolves the problem that converter testing platform is as usual characteristics of huge electric consumption with loading, loud noises and the need for the DC power supply with large power.
5 citations
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25 Aug 2003
TL;DR: In this paper, a PWM rectifier control means 101A is equipped with: a power voltage/potential detection means 10, a voltage vector converting means 11, a maximum/minimum detection means 12, and a means 13 which makes an input current command for making instantaneous active power roughly constant, using the phase of the positive phase/reverse phase voltage determined from the power phase when the magnitude of the voltage vector becomes its maximum value or its minimum value or both of them.
Abstract: PROBLEM TO BE SOLVED: To suppress wave distortion due to the imbalance of power voltage by simple operation and to reduce the cost, in an AC/DC/AC system of power converter, where the filter of a DC link part is removed, or in a matrix converter SOLUTION: A PWM rectifier control means 101A is equipped with: a power voltage/potential detection means 10; a voltage vector converting means 11 which computes the magnitude of a power voltage vector; a maximum/minimum detection means 12 which detects the maximum value and the minimum value of the magnitude of a voltage vector; a means 13 which makes an input current command for making instantaneous active power roughly constant, using the phase of the positive phase/reverse phase voltage determined from the power phase when the magnitude of the voltage vector becomes its maximum value or its minimum value or both of them, the magnitude of the positive phase/reverse phase voltage determined from the maximum value and the minimum value of the magnitude of the voltage vector, and the magnitude of a positive phase/reverse phase current command; and a means 14 which makes a PWM signal, according to this input current command COPYRIGHT: (C)2005,JPO&NCIPI
5 citations
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25 May 2009TL;DR: In this article, the characteristics of a three-level PWM rectifier-based traction system with the DC voltage of 1500V were investigated. And the topology and control strategy for a single threelevel module in the system, as well as the control strategies for paralleled connection of such modules, all subjected to simulations and experiments.
Abstract: To accomplish a higher departure density and velocity, the traction supply is required to generate higher power, higher power factor, and better stability with higher power conservation ratio, which makes a novel traction system with PWM rectifier the research focus in such area. Analysis of the differences between our novel supply system and a conventional one consisting of uncontrolled diode rectifiers is presented in this paper. Oriented to a traction system with the DC voltage of 1500V,the characteristics of such novel supply system based on three-level PWM rectifier is studied. What's more, in this paper are introduced thoroughly the topology and control strategy for single three-level module in the system, as well as the control strategy for paralleled connection of such modules, all subjected to simulations and experiments.
5 citations