Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title A Novel Non-Isolated DC-DC Converter using Single Switch and Voltage Multipliers with High Step-Up Voltage Gain and Low Voltage Stress Characteristics
Authors Tran Manh Tuan ; Saghir Amin ; Woojin Choi
DOI 10.6113/TKPE.2020.25.3.157
Page pp.157-161
ISSN 1229-2214
Keywords High voltage gain; High efficiency; IBB(Inverting Buck-Boost) converter; Low voltage stress; VM(Voltage Multipliers)
Abstract High voltage gain converters are essential for distributed power generation systems with renewable energy sources, such as fuel cells and solar cells, because of their low voltage characteristics. This paper introduces a novel nonisolated DC-DC converter topology developed by combining an inverting buck-boost converter and voltage multipliers. In the proposed converter, the input voltage is connected in series with the output, and the majority of the input power is directly delivered to the load. The voltage multipliers are stacked in series to achieve high step-up voltage gain. The voltage stress across all of the switches and capacitors can be significantly reduced. As a result, the switches with low voltage ratings can be used to achieve high efficiency and low cost. To verify the validity of the proposed topology, a 360-W prototype converter is built to obtain the experimental results.