摘要
基于矩阵变换器有效开关模式,分析了矩阵变换器供电时电机共模电压的产生机理,结果表明:采用空间矢量调制方法时,共模电压的最大峰值与零矢量的开关状态有关.为了减小矩阵变换器输出共模电压,对输出电压零矢量开关状态组合形式进行了修正,将60°相区内的一个零矢量用2个不同状态的零矢量替换,使共模电压最大峰值降低到原来的1/3.最后对实际的矩阵变换器-永磁同步电机驱动系统原理样机进行了仿真和实验分析,验证了理论分析的正确性和改进的零矢量状态的有效性.
As other kinds of PWM converters, matrix converters （MCs） also produce the commonmode voltages in motors driven by it. Based on the effective switch modes of MC, the producing principle of common-mode voltage is analyzed and discussed. The results show that the maximum peak value of the common-mode voltage is related with the selections of zero-vectors in space-vector modulation MC. To restrain the common-mode voltage, two different zero-vectors are suggested to be used in stead of one zero-vector within the range of 60° （a sector） and the maximum peak value of it can be reduced to 1/√3 the former value. The simulation and experimental results of the matrix converter-permanent magnetic synchronous machine （PMSM） prototype demonstrate the correctness of the theoretical analysis and the effectiveness of improved zero-vector states.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2006年第1期79-83,共5页
Journal of China University of Mining & Technology
基金
航空支撑基金项目(04C52012)
高等学校博士点学科点专项科研基金(20020287020)
关键词
矩阵变换器
空间矢量调制
共模电压
零矢量
开关模式
matrix converter
space vector modulation
common-mode voltage
zero vector
switch mode
