摘要
研究最小相角误差和最小幅值误差两种空间电压矢量PWM过调制策略的原理、算法及其对应的逆变器输出电压波形和最大调制系数,并应用于交流异步电动机矢量控制系统.实验结果表明,这两种过调制策略能提高输出电压的基波幅值.根据实验相电流波形,分析了因过调制引起的电流畸变.
Two overmodulation strategies for space voltage vector PWM were investigated, which are with minimum phase error or with minimum magnitude error respectively. Their principles, algorithms, waveforms of output voltage and maximum modulation index are included. The overmodulation strategies were applied to the vector-controlled induction motor. An increase in the magnitude of fundamental output voltage was verified by experiments. The distortion in phase current was analyzed.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2005年第S1期53-56,共4页
Journal of Shanghai Jiaotong University
关键词
空间电压矢量
脉宽调制
过调制
space voltage vector
pulse width modulation （PWM）
overmodulation
