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 2003
TL;DR: A review of three-phase PWM converter topologies which do show a low complexity / high reliability and high efficiency and power density and are therefore of main interest for a future industrial application is presented in this article.
Abstract: A review of three-phase PWM converter topologies which do show a low complexity / high reliability and high efficiency and power density and are therefore of main interest for a future industrial application is presented. A three-switch/level boost-type PWM rectifier (VIENNA Rectifier), a buck+boost-type PWM rectifier with wide output voltage range and the AC/AC Sparse Matrix Converter concept are discussed in detail and topics to be treated in the course of further research are identified. Finally, it is shown how the aspects being relevant for the realization of highly compact converter systems could be integrated into education in the field.
15 citations
17 May 2009
TL;DR: In this article, a feedforward compensation method was proposed to decrease the inrush current in a three-phase voltage source PWM rectifier with a TMS320F2812 DSP.
Abstract: Usually, the control method with voltage and current PI regulators in synchronous rotating frame is applied to three-phase voltage source PWM rectifier. It is easy to generate inrush current during startup period. A slow ramp reference current is commonly used to achieve the soft starting, but not quite effective. The paper first analyzed the cause of inrush current and obtained the shortcomings of traditional PI method and slow ramp reference method. Then a feedforward compensation was proposed to decrease the inrush current. After analysis and comparison, the feedforward compensation method has the best performance. Finally, an experimental prototype of a three-phase voltage source PWM rectifier controlled by a TMS320F2812 DSP was built and tested. The experimental results verified the validity of the analysis.
15 citations
01 Jan 2006
TL;DR: In this article, the dual close-loop control of DC motor is applied to three-level PWM rectifier, which has favorable dynamic and steady state performance,sinusoidal input current and unity power factor.
Abstract: A mathematical model of the three-level PWM rectifier is set up.Compared with the model of DC motor,some similarities are established.Based on the state feedback decoupling,the dual close-loop control of DC motor is applied to three-level PWM rectifier.As a result,the three-level rectifier has favorable dynamic and steady state performance,sinusoidal input current and unity power factor.Besides,a method is proposed to control the neutral-point voltage charge unbalance,which is an inherent problem of three-level inverter.The redundant positive small vectors and negative small vectors are selected according to the direction information of input current of each phase as well as the ripple of neutral-point voltage.Finally,experimental results verify the feasibility and validity of dual-loop control system and neutral-point voltage control method.
15 citations
TL;DR: It is shown that the proposed online inductance identification method can guarantee sinusoidal characteristics of the grid current and reduce power ripples under unbalanced and distorted network conditions when the identification algorithm is enabled.
Abstract: Direct power control (DPC) works well under ideal grid voltage conditions with accurate parameters. However, under unbalanced and distorted network conditions, significant power ripples and current harmonics arise in conventional DPC if no special measures are taken. Furthermore, the system performance further deteriorates if the inductance value differs from the actual value. To cope with the problems above, this article proposes an online inductance identification method for the DPC of a PWM rectifier under unbalanced and distorted network conditions. It is shown that the proposed method can guarantee sinusoidal characteristics of the grid current and reduce power ripples under unbalanced and distorted network conditions when the identification algorithm is enabled. The presented simulated and experimental results confirm the effectiveness of the proposed method.
15 citations
Journal Article•
01 Jan 2010-Compel-the International Journal for Computation and Mathematics in Electrical and Electronic Engineering
TL;DR: In this article, the authors consider the case when a line-frequency rectifier is used and present a method for the analysis of dc bus voltage instability in such systems, where small dc bus capacitors may lead to instability of the DC bus voltage.
Abstract: Use of small dc bus capacitors is desirable in variable-speed drives and distributed power systems as it can reduce the size and improve reliability of the system. However, small dc bus capacitors may lead to instability of the dc bus voltage. Such voltage stability problem can occur when the bus is fed from a PWM rectifier or a line-frequency rectifier. This paper considers the case when a line-frequency rectifier is used and presents a method for the analysis of dc bus voltage instability in such systems. Small-signal input impedance of multipulse line-frequency rectifiers is used in conjunction with the ac source output impedance to detect possible instability on the dc bus. Stabilization of the dc bus voltage by a passive damping is presented and compared to other stabilization methods such as increasing dc bus capacitance or placing the damper at the ac input of the rectifier. Experimental results from a 12-pulse rectifier feeding an electronic load that is programmed to emulate constant-power load behavior typical of DPS and variable-speed drives are presented to validate the analysis and design approach.
15 citations