LOW VOLTAGE APPARATUS ›› 2021, Vol. 0 ›› Issue (2): 81-87.doi: 10.16628/j.cnki.2095-8188.2021.02.015

• Distributed Generation and Grid-Connection Technology • Previous Articles     Next Articles

Modulation Method for Reducing Current Zero-Crossing Distortion of VIENNA Rectifier

ZHANG Qingyan, WANG Peidong, HUANG Xinmei, WANG Juncan, GUI Zaiyi, ZHANG Wei   

  1. School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China
  • Received:2020-12-14 Online:2021-02-28 Published:2021-03-25

Abstract:

The inherent problem of the VIENNA rectifier is that distortion may occur at the current zero crossing point.To solve this problem,a modulation method that can minimize the current zero-crossing distortion is proposed.Firstly,according to the control method of the VIENNA rectifier,the principle of current zero-crossing distortion is analyzed.Then,a function to quantify the actual output voltage deviation of the rectifier is proposed.And the minimum distortion of the actual output voltage at the current zero-crossing point is achieved.Finally,the feasibility and superiority of the modulation method proposed in this paper are verified by experiments.

Key words: VIENNA rectifier, current zero-crossing distortion, unit power factor, deviation

CLC Number: