SHE-PWM technique for single-phase AC-AC matrix converters

A novel control technique based on the well-known selective harmonic elimination pulse-width modulation (PWM-SHE) method suitable for a single-phase matrix converter is presented in this paper. An intergraded mathematical model presenting PWM-SHE with power factor correction scheme is first developed. The proposed technique enables linear control of the fundamental component of the output voltage, improves the input power factor, and also eliminates the low-order harmonics. Various operating points with different output frequencies are reported. The parameters used to assess the performance of the converter controlled by the proposed technique are the input harmonic distortion factor, the total input power factor, and the output voltage total harmonic distortion factor. The theoretical predictions are verified through simulation studies using the PSIM software package.