Novel control strategy for synchronous PWM on a matrix converter

A new synchronous PWM control strategy is proposed for the output frequency of a matrix converter. This paper shows a single pulse operation for the matrix converter as same as a single pulse operation for an inverter. One of the problems of the single pulse operation is the beat-frequency components in the output current. The problem is fixed by the control of beatless current with pulse shift compensation to PWM pulse, which is adjusted equally between the positive and negative areas, based on a single-pulse control. The voltage transfer ratio is improved to 0.955 when the output frequency is much higher than the input frequency. Additionally, a transfer control between an asynchronous and the synchronous control is proposed. The basic operation of the proposed control is confirmed by simulation and experimental results.