Performance Analysis of Single Phase Bi-Directional Converter Using CSPWM and Sinusoidal-PWM Techniques for Enhancement in Power Factor and Voltage Regulation

This paper present a performance analysis of bi-directional converter using continuous switching pulse width modulation (CSPWM) and sinusoidal pulse width modulation (S-PWM) techniques. The analysis is carried out by means of rectification and inversion operation using two cases. In CASE-I CSPWM technique is used for the rectification operation and S-PWM is for inversion operation. And in CASE-II both the rectification and inversion are implemented using S-PWM technique. Both the modulation techniques are digitally implemented and the optimized parameters are achieved without current control loop. The analysis is based on the optimization of parameters like power factor, voltage regulation, harmonic distortion and bi-directional operation. These converter topologies are evaluated on the basis of silent features like partial digital implementation, low cost, simple and high performance to analyse its applicability. The proposed converter is bridgeless and transformer-less which highlights its high efficiency, high power factor and low harmonic distortions for the CASE-I.