Document Type : Research Paper
Authors
1
Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
2
Department of Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
3
Assistant Professor, College of Engineering, Baghdad University, Baghdad, Iraq
4
Department of Electrical Engineering, Najafabad Branch, Islamic Azad University
5
Assistant Professor, Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
10.22104/hfe.2024.6962.1303
Abstract
This paper introduces a high step-up converter that utilizes a winding cross-coupled inductor paired with a novel auxiliary circuit. The auxiliary circuit facilitates zero-voltage switching (ZVS) for the main switches, while ensuring zero-current switching (ZCS) for the auxiliary switch. To reduce input current ripple, a ripple cancellation technique is also employed. The converter achieves high voltage gain, thereby reducing voltage stress on the main switches. Moreover, the auxiliary switch operates for a brief period, keeping the circulating current in the auxiliary circuit low and minimizing associated losses. On the other hand, the auxiliary circuit has a low number of components and can be expanded to more parallel branches of the converter without increasing the number of switches. The proposed converter's design and functionality have been rigorously analyzed and verified through simulations using PSPICE software. Additionally, a 100W prototype has been constructed to validate both the theoretical analysis and the simulation outcomes.
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