Hybrid Z-Source DC-DC Converter with ZVZCS and Power Transformer Resetting: Design, Modeling, and Fabrication

• Main Authors: H. Torkaman, T. Hemmati
• Format: Article
• Language: English
• Published: Iran University of Science and Technology 2018-03-01
• Series: Iranian Journal of Electrical and Electronic Engineering
• Subjects: Zero Voltage Switching (ZVS); Zero Current Switching (ZCS); Z-Source Converters; Forward DC-DC Converter.
• Online Access: http://ijeee.iust.ac.ir/browse.php?a_code=A-10-2361-1&slc_lang=en&sid=1

This paper introduces a novel two transistors forward topology employing a z-source to achieve ZVZCS and power transformer resetting for various applications. Comparing with the forward converter, this topology has the advantage of displaying ZCS condition with an added Z-Source and no additional switches when the switches turn on, and that ZVS condition happens when the switches turn off. Duty cycle of the topology can exceed 50 percent. As a result, these converters are suitable for applications with high efficiency. In this paper, structure and properties of the topology will be discussed in details. Then the design principles will be presented. Finally, the benefits aforementioned will be approved in practice through a simple forward converter.