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电流型PWM整流器低电压应力空间矢量PWM(SVPWM)研究
引用本文:张兴,季建强,余勇,刘正之,张崇魏.电流型PWM整流器低电压应力空间矢量PWM(SVPWM)研究[J].中国电机工程学报,2004,24(2):144-149.
作者姓名:张兴  季建强  余勇  刘正之  张崇魏
作者单位:1. 合肥工业大学电气工程学院,安徽,合肥,230009
2. 中国科学院等离子体物理研究所,安徽,合肥,230031
摘    要:为了有效降低三相电流型。PWM整流器(CSR)功率管的电压应力,提高CSR运行可靠性,在详细分析了二相CSR功率管换相过程基础上,提出了基于空间矢量(SVPWM)的三相CSR低电压应力控制新方案。该方案通过实时调整矢量合成顺序,使原本不处于自然换相的功率管处于自然换相状态,从而降低了三相CSR功率管的电压应力。另外,由于采用了SVPWM控制,使得三相CSR具有电流利用率高、开关损耗小、动态响应快等优点。因此,新方案特别适合于大功率三相CSR变流系统的设计。理论分析和试验结果证明了方案的正确性。

关 键 词:电流型PWM整流器  控制策略  电流矢量  电压应力  空间矢量调制  PWM
文章编号:0258-8013(2004)02-0144-06
修稿时间:2003年7月17日

STUDY OF LOW VOLTAGE STRESS SPACE VECTOR PWM CONTROL FOR CURRENT SOURCE PWM RECTIFIER
ZHANG Xing,JI Jian-qiang,YU Yong,LIU Zheng-zhi,ZHANG Chong-wei.STUDY OF LOW VOLTAGE STRESS SPACE VECTOR PWM CONTROL FOR CURRENT SOURCE PWM RECTIFIER[J].Proceedings of the CSEE,2004,24(2):144-149.
Authors:ZHANG Xing  JI Jian-qiang  YU Yong  LIU Zheng-zhi  ZHANG Chong-wei
Abstract:To lower the voltage stress on switches of three phase Current Source PWM Rectifier (CSR), a new low voltage-stress SVPWM control method is developed in this paper based on the detailed analysis of the commutating process of power switches. By exchanging the sequence of the vectors composition, the power switches, could operate in natural commutation state, so the voltage-stresses of power switches are reduced greatly. Owning to the fact that the SVPWM control is of higher DC current utility-rate, low switching-looses and better transient performance. This new low voltage-stress SVPWM especially fits for high power three phase converter systems. The experimental results verify the theoretical analysis.
Keywords:CSR  Space vector  Voltage stress
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