A New ZVS Nonisolated Bidirectional DC-DC Converter with Minimal Auxiliary Element

oleh: Nasrin Asadi Madiseh, Majid Delshad

Format: Article
Diterbitkan: Najafabad Branch, Islamic Azad University 2013-01-01

Deskripsi

In this paper, a new nonisolated bidirectional buck–boost dc–dc converter is introduced. The proposed converter can be operated under ZVS condition and fixed switching frequency regardless of the direction of power flow. To provide ZVS condition for switches a simple auxiliary circuit is used, that consists of an auxiliary inductor and a coupled winding to main inductor. Due to ZVS operation of switches, the reverse recovery problem of the body diode of the switches does not occur. Moreover, to provide soft switching any extra switch is not used in this converter, so its implementation and control is very simple. The experimental and simulation results of the proposed bidirectional converter are given to confirm the theoretical analysis.