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中国电机工程学报 2010, 30(3) 14-20 DOI: ISSN: 0258-8013 CN: 11-2107/TM

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电力电子与电力传动

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	本文关键词相关文章
	四开关逆变器
	容错
	空间矢量脉宽调制
	调制函数
	过调制
	本文作者相关文章
	安群涛
	孙醒涛
	赵克
	孙力
	PubMed
	Article by An,Q.S
	Article by Xun,J.S
	Article by Diao,k
	Article by Xun,l

容错三相四开关逆变器控制策略

安群涛，孙醒涛，赵克，孙力

哈尔滨工业大学电气工程系

摘要：三相四开关逆变器作为传统六开关逆变器的容错拓扑得到了广泛重视，然而其控制性能低于六开关逆变器。在深入分析四开关逆变器运行原理的基础上，研究四开关逆变器的空间矢量脉宽调制(space vector pulse width modulation，SVPWM)控制方法，揭示四开关SVPWM控制的本质是以2路相位相差60° 电角度的正弦波为隐含调制函数的正弦脉宽调制(sinusoidal pulse width modulation，SPWM)控制。为减少器件的开关次数，提出四开关SVPWM的“七段式”实现方式。指出四开关SVPWM最大线性调制比只有六开关时的一半，为提高直流电源电压的利用率，提出基于补偿电压矢量的四开关逆变器SVPWM过调制方法。仿真和实验结果证明了所提算法的正确性和有效性。

关键词：四开关逆变器容错空间矢量脉宽调制调制函数过调制

Control Strategy for Fault-tolerant Three-phase Four-switch Inverters

AN Qun-tao, SUN Xing-tao, ZHAO Ke, SUN Li

Department of Electrical Engineering, Harbin Institute of Technology

Abstract: The three-phase four-switch inverter is being attached much importance as a fault-tolerant topology for traditional six-switch scheme, but its performance is lower than the latter. Based on analysis of the operation principle of four-switch inverters, space vector pulse width modulation (SVPWM) was studied and its essence was posted, that is a sinusoidal pulse width modulation (SPWM) using a triangle wave and two implicit sine waves whose phases are separated by 60° electrical angle. To reduce the number of power device switching, the implementation method of four-switch SVPWM with seven-segment scheme was presented. The maximal linear modulation ratio of four-switch SVPWM is half of the one in six-switch scheme, which is indicated as a conclusion. A compensatory voltage vector based overmodulation method for four-switch SVPWM was presented for improving the utilization ratio of the DC voltage. The simulation results as well as experimental ones illustrate the validity and efficiency of the proposed algorithm.

Keywords: four-switch inverter fault-tolerant space vector pulse width modulation modulation function overmodulation

收稿日期 2009-01-08 修回日期 2009-05-06 网络版发布日期 2010-01-28

DOI:

基金项目:

国家自然科学基金项目(50477009)。

通讯作者: 安群涛

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2．李和明李亚斌彭咏龙.基于FPGA的三相电流型PWM整流器过调制策略的研究[J]. 中国电机工程学报, 2007,27(22): 94-100