A Carrier-Based Modulation Method with Clamped Area for Input Current Performance of Vienna Rectifier
Zhu Wenjie, Chen Changsong, Duan Shanxu
State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Huazhong University of Science and Technology Wuhan 430074 China
Abstract：The three-phase three-level Vienna rectifier is a very suitable power factor converter (PFC) because of its low total harmonic distortion (THD) of input current, high power density and unity power factor. However, during the transient turn-on/off progress, the nonlinear factors, such as snubber circuit and parasitic capacitance, will cause terminal voltage error and distort input current. Therefore, this paper proposed a carrier-based pulse-width modulation (CB-PWM) with clamped area. Considering the nonlinearity of Vienna rectifier, the switching transient progress and the terminal voltage error are analyzed. The CB-PWM method clamps the zero-crossing phase to the neutral-point within clamped angle, which reduces terminal voltage error and improves the input current quality. The conventional SPWM method and the proposed clamped CB-PWM method are compared by simulation and experiment. The results show that the lower-order current harmonics and current THD can be reduced, which verifies the proposed clamped CB-PWM method.
朱文杰, 陈昌松, 段善旭. 一种改善Vienna整流器输入电流品质的载波钳位调制方法[J]. 电工技术学报, 2019, 34(8): 1677-1688.
Zhu Wenjie, Chen Changsong, Duan Shanxu. A Carrier-Based Modulation Method with Clamped Area for Input Current Performance of Vienna Rectifier. Transactions of China Electrotechnical Society, 2019, 34(8): 1677-1688.
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2019, Vol. 34 
