A high power factor bidirectional battery charger using single-phase matrix converter

This paper presents a novel unity power factor bidirectional battery charger using single-phase matrix converter (SPMC). The advantages of the proposed converter are its capability to perform bidirectional operation for charging and discharging purposes hence low harmonic distortion in supply current and nearly unity power factor over a wide operating output power range. Its circuit has employed only single circuit topology that is SPMC and by using the proposed switching algorithm it can be controlled for both charging and discharging operations resulting reduces the cost and enhances the system´s efficiency. Thus, the proposed converter incorporating with an active current controller improves the line power quality and delivers admissible output power to the battery. Computer simulation results using MATLAB/Simulink based on a 24-V battery charger are proposed to validate the proposed approach and to demonstrate its performance.