Performance Analysis of Direct Single-Phase AC-AC Converter with Novel Switching Strategy

Abstract

Abstract—Recently, direct-type ac-ac converters have attracted considerable attention for voltage magnitude variation due to the reduced number of component requirements. This paper introduces a direct single-phase ac-ac converter with a novel switching strategy for UPF and non-UPF load. The suggested converter's circuit configuration uses six power MOSFETs and two inductors at high switching frequency to reduce the size. The proposed switching strategy reduces the losses of semiconductor devices with a safe commutation. The performance analysis of the proposed converter has been carried out for high power quality operation with almost unity PF at the i/p and low THD at the output for 400W resistive and inductive loads. The simulations have been carried out on MATLAB-2019b. Keywords—AC-AC Converter, buck, switching strategy, UPF, and Non-UPF load.