A New Dual Input Boost Converter with Zero Voltage Switching
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RESEARCH PAPER
A New Dual Input Boost Converter with Zero Voltage Switching Mohammad Foroughi1 • Mohammad Reza Amini1 Received: 7 September 2018 / Accepted: 1 October 2019 Ó Shiraz University 2020
Abstract In order to reducing number of elements and increasing voltage gain in renewable energy systems, the multi-input converters are used. In this paper, a new soft switching multi-input boost converter is presented. In the proposed converter number of extra elements that be used to achieve soft switching is reduced and only one auxiliary switch is used. The main switches are turned on and off at zero voltage switching conditions, and the auxiliary switch is turned on and off at zero current switching conditions. This converter is analyzed, and its operating modes are explained. Design considerations for the proposed converter is presented in the paper. The simulation and experimental results for a 200 W prototype converter confirm the theoretical analysis. Keywords Multi-input converter (MIC) Boost converter Zero voltage switching (ZVS) Zero current switching (ZCS)
1 Introduction In recent years, new types of converters have been developed which can be connected to several power generation sources at the same time. In these systems, all of the sources can transmit the power to output simultaneously. Also, in lack of some sources the output power should be provided. These converters are known as multi-input converters that have different structures. The main advantages of these converters are using fewer semiconductor elements, inductors and capacitors. Therefore, total cost of converter is reduced (Khosrogorji et al. 2015). Multi-input converters are classified into two types: magnetically coupled converters and electrically coupled converters. Variant topologies for multi-input converters have been proposed in recent years that the main purposes of them are high efficiency and using few elements. In Buswig et al. (2014) a multi-input converter is provided using the interleaved technique. In Banaei et al. (2014) a multi-input boost converter has been presented
& Mohammad Reza Amini [email protected] Mohammad Foroughi [email protected] 1
Department of Electrical Engineering, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
with the non-isolated structure and high-voltage transfer gain. In this converter, the conventional buck–boost and boost converters are combined. The benefits of this converter are low-semiconductor current stress, no limitation for duty cycle of switching and wide control range for different input powers. In Haghighian and Hosseini (2015) and Hosseini et al. (2010) multi-input boost converter for grid connected hybrid PV/FC/Battery power system has been proposed. The proposed structure can combine three various input sources into a single output DC link. Using these converters and setting the duty cycle of the switches, the maximum available power of the photovoltaic panels can be extracted and the fuel cell output power can be adjusted, also battery charging
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