矩阵式变换器设计中的干扰抑制技术

Method to Reduce Disturbance for Matrix Converter

介绍了矩阵式变换器输入滤波器的设计方法。利用半软电流换流和优化开关顺序能够减少导通损耗,同时提高波形质量。输入滤波器设计的困难在于要符合现存和将要出台的 EMC 法规。比较了利用软件仿真和实际测量所得 DSP 控制的功率变换器的扰动电压,并对与输入滤波器设计的关系进行了研究。

The methods how to reduce the disturbance for a matrix converter are presented.Semisoft current commutation and optimal sequence switching can be used to minimize commutation losses while waveform quality is enhanced.Input filter may reduce effectively the switch frequency harmonics of input current.The problems associated with input current filtering to comply with existing and possible EMC regulations are investigated.The disturbance voltage results from computer simulation and practical measurements from a power level converter under microprocessor(DSP)control are compared.Possible design for an input filter to meet the standards are considered.