Influence of commutation delay on waveform distortion in high-frequency SiC matrix converter

This presentation investigates the output waveform distortion of a high-switching SiC matrix converter when the commutation delay effect is taken into account. During the commutation time in the matrix converter, an unwanted voltage error occurs which destroys the output waveform quality.The influence of the commutation delay is more distinct in a high-switching frequency matrix converter. After presenting the relationship between the output voltage error with commutation delay and switching frequency theoretically, the effect of commutation delay on output waveform distortion in low and high switching frequencies is investigated experimentally. It has been found that the commutation delay value has to be as minimizing as possible in order to decrease the distortion in the output waveforms for high switching frequency matrix converters.