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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01 Jan 2005
TL;DR: In this article, the principle and properties of the direct power control (DPC) system for present three phase boost type PWM rectifiers based on its mathematical model are analyzed.
Abstract: This paper analysies the principle and properties of the direct power control (DPC) system for present three phase boost type PWM rectifiers based on its mathematical model. Switching table in power loop of DPC system controls instantaneous active power and reactive power ,leading to the fluctuation of power and DC voltage in temporary state and DC dynamic voltage drop during load current disturbance. This paper presents a new direct power control strategy based on alternate use of instantaneous active power and reactive power switching tables. Good control properties are achieved by the new control strategy. Meanwhile, DC dynamic voltage drop during load current disturbance is decreased and stable voltage drop is eliminated by the duty cycle of square wave to control double switching table based on load current feedback. The new control strategy is proved feasible by simulink and experiment.
23 citations
Journal Article•
TL;DR: In this paper, the transfer fuction of input current using LC input filter was deduced and the parameter setting method of inductor and capacitor was presented, and it was verified that the input current will oscillate near the resonant frequency in very low damping factor condition.
Abstract: Regarding the matrix converter (MC) as a buck type PWM rectifier in the input side, the transfer fuction of input current using LC input filter was deduced The parameter setting method of inductor and capacitor was presented It was verified that the input current will oscillate near the resonant frequency in very low damping factor condition and a method to improve the damping factor of input filter was then presented The validity of improved method was verified by computering simulation and the start up characteristic of input filter was analyzed The EMI characteristic of MC was analyzed and it was verified that the input EMI filter is necessary in industrial matrix converters
23 citations
01 Sep 1999
TL;DR: In this article, the authors describe a method for line synchronisation and control of a PWM rectifier which uses indirect supply voltage sensing and gives fast update of line voltage phase angle while rejecting distortion such as voltage notches.
Abstract: A voltage source PWM converter can be used as the input stage to a four-quadrant variable-speed drive to give bidirectional power flow, and sinusoidal input currents with near unity power factor. The paper describes a method for line synchronisation and control of a PWM rectifier which uses indirect supply voltage sensing and gives fast update of line voltage phase angle while rejecting distortion such as voltage notches. Indirect line voltage sensing allows the use of a standard AC motor drive as a PWM rectifier without additional hardware or line voltage connections. Details of the method used for synchronisation at start-up are given and experimental results demonstrating robust steady-state and dynamic performance are presented.
23 citations
01 Mar 2000
TL;DR: In this article, a ZCS turn-on and ZVS turn-off unity power factor PWM rectifier, which features soft switching with no auxiliary switches and reduced conduction losses is presented.
Abstract: A ZCS turn-on and ZVS turn-off unity power factor PWM rectifier, which features soft switching with no auxiliary switches and reduced conduction losses is presented. The ZVS and ZCS switching are achieved by using a simple commutation circuit with no auxiliary switches, and reduced conduction losses are achieved by employing a single converter instead of a typical front-end diode rectifier followed by a boost rectifier. Furthermore, thanks to features such as simple PWM control at constant frequency. Low switch stress and low VAr rating of commutation circuits, it is suitable for high-power applications. The principle of operation is explained and analysed, and the design considerations and experimental results of the new converter are included.
23 citations
28 Nov 2005
TL;DR: In this paper, a relay control strategy of a current-source PWM rectifier, which is based on relay control of instantaneous active and reactive power, is presented, and its experimentally examined operation characteristics, followed by a theoretical derivation of the control algorithm.
Abstract: This paper describes a novel control strategy of a current-source PWM rectifier, which is based on relay control of instantaneous active and reactive power, and presents its experimentally examined operation characteristics, followed by a theoretical derivation of the control algorithm The most important feature of this strategy is a direct selection of switching modes of the PWM rectifier to restrict errors between the feedback values and the command values of the active and reactive power Therefore, a theoretical analysis on relationship between the instantaneous power and the switching modes of the PWM rectifier is deeply investigated, which is essential to compose a switching mode table in the controller Feasibility of the proposed strategy is experimentally verified, using a prototype setup As a result, 927-% maximum efficiency and 999-% maximum total power factor are confirmed through the experimental tests
23 citations