Method to Reduce Disturbance for Matrix Converter

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.