Fault-Tolerant Single-Phase AC-DC Boost Matrix Converter

Abstract

In this paper, a fault-tolerant single-phase AC-DC boost matrix converter is proposed. The proposed converter is based on a Single-Phase Matrix Converter (SPMC) configuration. The combination of four power switches creates multiple alternative current routes to maintain a continuous output power supply. The operation of the converter is analysed in detail by assessing all possibility of open circuit fault occurrence in SPMC across the switches. A PWM generator controlled by a set of codes along with a combination of logic gates are used to produce a steady output voltage, VO. A simulation is designed by using MATLAB/Simulink to study the performance of the converter. The proposed converter has been tested and able to detect the Open Circuit Fault (OCF) within one cycle and recover within five to six cycles. Four different routes can be enabled to overcome OCF while maintaining a consistent VO.