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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TL;DR: A modified minimum-loss space vector modulation (SVM) strategy suitable for the novel zero-voltage switching (ZVS) rectifier is proposed in this paper and the design guidelines of the soft switched circuit parameters are described in detail.
Abstract: A novel active clamping zero-voltage switching three-phase boost pulsewidth modulation (PWM) rectifier is analyzed and a modified minimum-loss space vector modulation (SVM) strategy suitable for the novel zero-voltage switching (ZVS) rectifier is proposed in this paper. The topology of the novel ZVS rectifier only adds one auxiliary active switch, one resonant inductor, and one clamping capacitor to the traditional hard-switched three-phase boost PWM rectifier. With the proposed SVM strategy, the novel ZVS rectifier can achieve ZVS for all the main and auxiliary switches. In addition, the antiparallel diodes can be turned OFF softly, so the reverse recovery current is eliminated. Besides, the voltage stress of all the switches is equal to the dc-link voltage. The operation principle and soft-switching condition of the novel ZVS rectifier are analyzed. The design guidelines of the soft switched circuit parameters are described in detail. A DSP controlled 30 kW prototype is implemented to verify the theory.
34 citations
20 Jun 1993
TL;DR: In this article, the modeling and control of a PWM rectifier in the case of network variations is studied, where the aim is to limit and stabilize stable variation of DC output voltage and line currents in such circumstances.
Abstract: The modeling and control of a PWM rectifier in the case of network variations are studied. The aim is to limit and stabilize stable variation of DC output voltage and line currents in such circumstances. A line current compensation loop method coupled with identification of network parameters is compared to another approach using a robust DC voltage regulator. >
34 citations
01 Sep 2000
TL;DR: In this article, a single phase three-arms PWM rectifier inverter is presented, where a switching control approach for the common arm is proposed such that control of the rectifier arm and inverter arm can be designed independently.
Abstract: A high performance single phase three-arms PWM rectifier inverter is presented. A switching control approach for the common arm is proposed such that control of the rectifier arm and inverter arm can be designed independently. Variable structure control (VSC) executed with capacitor current control is developed to design the inverter. For the rectifier design, an instantaneous power feedback controller using filter theory is proposed to enhance the DC voltage regulator to reduce DC voltage fluctuation and minimise input current distortion. A 3 kVA system is implemented to confirm the effectiveness of the proposed approaches.
33 citations
TL;DR: Simulation and experimental results show that the proposed improved model predictive control scheme exhibits good performance in both the rectifier stage and the inverter stage with improved dynamic response and suppressed voltage fluctuation of the dc-link voltage.
Abstract: The dc-link voltage fluctuation caused by the change of working state of the load motor has been one of the key issues in the pulse width modulation rectifier–inverter system. In this study, an improved model predictive control (MPC) scheme is proposed to address this problem. The MPC is applied to both the rectifier stage and the inverter stage in the system. Direct power control is used in the rectifier stage and the direct torque control is employed in the inverter stage, with the key novelty of the active power reference values being defined by both real-time and periodic compensation power based on the system-level power-balance model. Meanwhile, an MPC algorithm based on a two-step prediction is introduced to compensate for the delay of a digital controller. Comparison has been conducted between the proposed scheme and three other methods. Simulation and experimental results show that the proposed control scheme exhibits good performance in both the rectifier stage and the inverter stage with improved dynamic response and suppressed voltage fluctuation of the dc-link voltage.
33 citations
14 Dec 2005
TL;DR: In this article, the output ripple voltage is cancelled before feeding to voltage controller in order to increase system bandwidth while supply current is still nearly sinusoidal and maintains unity power factor.
Abstract: Novel control technique of single-phase PWM rectifier by compensating output ripple voltage is presented. Output ripple voltage is cancelled before feeding to voltage controller in order to increase system bandwidth while supply current is still nearly sinusoidal and maintains unity power factor. Output ripple voltage estimator is calculated by the information of peak value of supply voltage and current. Peak value estimator of sinusoidal signal is introduced with the help of a simple trigonometric rule. Additionally, feed forward current controller is also presented so as to improve tracking performance of supply current. The proposed scheme is simulated in order to compare with conventional scheme. The simulation results show that the proposed scheme is working effectively both in rectifying mode and regenerating mode
33 citations