Peripheral interface controller as signal generator in the single-phase matrix converter as AC-DC converter

This paper describes implementation of peripheral interface controller (PIC) to generate pulse width modulation (PWM) signal to control the synthesize output waveform of single-phase matrix converter. This is then extended to produce an active pulse width modulation (APWM) in order to maintain input current waveform to become continuous, sinusoidal and in phase with the supply voltage and hence near unity power factor. The proposed switching control has capabilities to eliminate spike that is commonly induced with the use of inductive load.