Affiliation:
1. Faculty of Electrical and Computer Engineering University of Tabriz Tabriz Iran
2. Engineering Faculty Near East University 99138 Nicosia North Cyprus, Mersin 10 Turkey
Abstract
AbstractIn this paper, a single‐phase AC‐AC converter with continuous input current and without commutation problem is proposed. The output voltage regulation achieved using a single high‐frequency switch eliminates the need for complementary switches, thereby resolving high‐frequency commutation issues and obviating the necessity for snubber circuits and a safe commutation strategy. The proposed converter operates with a continuous input current, eliminating the need for a bulky LC filter. Low‐frequency switches on the output side allow for step‐changed frequency operation without encountering commutation problems. A straightforward and adaptable switching strategy generates the step‐changed frequency at the output. The proposed converter reduces volume, weight, and cost by minimizing the total stored energy of passive components. High‐speed switching is achieved by preventing the body diode conduction of power MOSFETs, which traditionally suffer from poor reverse recovery. The operational principles of the proposed converter are delineated for various modes, and their key relationships are presented. A 110Vi(rms)/50 Hz laboratory prototype validates the performance of the proposed converter.