Safe-commutation strategy for controlled rectifier operation using single-phase matrix converter

This paper proposes an implementation of a new safe-commutation strategy for controlled rectifier operation using single-phase matrix converter (SPMC). The Pulse Width Modulation (PWM) technique was used to calculate the switch duty ratio to synthesize the output. The proposed safe-commutation strategies were developed through an arrangement of commutation switches that allows dead time to avoid voltage spikes due to inductive load. Prior to its practical realization a computer simulation model is developed to investigate the behaviour of the SPMC using Matlab/Simulink (MLS) and PSpice. An experimental test-rig was then constructed to verify the operation; incorporated with control electronics, gate drives, and power circuits. The Peripheral Interface Controller (PIC 16F84A) was used for digital control implementation. Selected simulations and experimental results are presented to verify proposed operation.