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 Nov 2015
TL;DR: In this article, a single-phase PWM rectifier topology based on a DCM SEPIC integrated to a switched capacitor cell is proposed, which can either provide reduced voltage stress on the semiconductors to the same output voltage level, or it might supply double the gain in the output voltage with the same voltage stress.
Abstract: This paper proposes a novel single-phase PWM rectifier topology based on a DCM SEPIC integrated to a switched capacitor cell. A comparison with the classic SEPIC shows that the proposed converter might either provide reduced voltage stress on the semiconductors to the same output voltage level, or it might supply double the gain in the output voltage with the same voltage stress. As results, the proposed structure can be applied in order to improve the static gain of the DCM SEPIC rectifier and thus make it suitable for high voltage applications. The paper also proposes a modified switched capacitor cell, which does not change the operation of the storage capacitor structure. The paper presents the complete theoretical analysis and experimental verification, according to the following specification: 500W output power; 220V input voltage; 400V output voltage and 50 kHz switching frequency.
6 citations
Patent•
18 Jul 2007
TL;DR: In this article, a three-phase voltage PWM rectifier energy control strategy based on a PCHD energy model is proposed, which finds out a control rule of the minimum energy of the system at its expecting point ( realizing current sine, unit power factors and the DC voltage equal to a given voltage at the rectifier net side) so the system has ideal static performance.
Abstract: This invention puts forward a three-phase voltage PWM rectifier energy control strategy based on a PCHD energy model, which finds out a control rule of the minimum energy of the system at its expecting point ( realizing current sine, unit power factors and the DC voltage equal to a given voltage at the rectifier net side) so the system has ideal static performance, in order to speed up response of the system, difference value of the DC voltage given value and actual output voltage is sent to a PI adjuster to modify AC phase current amplitude by the output value of the PI adjuster to increase the start up and anti-interference ability of the control system.
6 citations
01 Dec 2009
TL;DR: In this article, a single-phase five-level PWM rectifier is proposed to obtain a nearly sinusoidal line current at the ac terminal, which is verified by a software simulation.
Abstract: A single-phase five level pulse width modulation (PWM) rectifier is proposed. The control scheme is using the sinusoidal PWM technique to improve the power factor and to achieve a lower total harmonic distortion (THD) for the proposed rectifier. The control method is also aimed to obtain a nearly sinusoidal line current. Five-level PWM output is generated at the ac terminal. The proposed topology is verified by a software simulation.
6 citations
02 Oct 1994
TL;DR: In this paper, a series resonant LC tank tuned to a high frequency along with a PWM rectifier topology is used to cancel lower order (5,7,11,13) harmonics generated by nonlinear loads.
Abstract: In this paper a new three-phase series resonant active power filter is presented. The proposed approach employs a series resonant LC tank tuned to a high frequency along with a PWM rectifier topology to cancel lower order (5,7,11,13) harmonics generated by nonlinear loads. The PWM control of the active filter allows for independent control of several lower order (5,7,11,13) harmonics, both in amplitude and in phase, to effectively cancel load generated harmonics under varying load conditions. The LC resonant frequency is chosen to be high, thus resulting in smaller sizes of passive components. Further, a zero voltage switching strategy with capacitive snubbers is explored to minimize the switching losses. The simulation and preliminary experimental results presented verify the concept of the proposed system. >
6 citations
20 Oct 2009
TL;DR: In this paper, a current-fed Z-source PWM rectifier is proposed to overcome the limitations of the traditional VSR and CSR, which can buck and boost voltage and provide bidirectional power flow.
Abstract: The voltage-source PWM rectifier (VSR) is a boost converter, thus its dc output voltage is much greater than the ac voltage, whereas the current-source PWM rectifier (CSR) is a buck converter and having a dc voltage smaller than its ac voltage. In addition, the CSR can only provide unidirectional power flow, thus unsuitable for regenerative operation. Recently, reverse blocking IGBT (RB-IGBT) has been developed for current-source and matrix converters. In this paper, a current-fed Z-source PWM rectifier is proposed to overcome the limitations of the traditional VSR and CSR. The current-fed Z-source PWM rectifier with only six active switches can buck and boost voltage and provide bidirectional power flow. This paper describes the operating principle of this current-fed Z-source PWM rectifier, presents a detailed steady state analysis and transient analysis. A RB-IGBT based current-fed Z-source PWM rectifier has been developed in laboratory. Both simulation and experimental results are shown to verify the operation and theoretical analysis.
6 citations