A New Hard Switching Bidirectional Converter With High Power Density

Subject Areas : Renewable energy

Bahador Fani ¹ , Majid Delshad ² , Daryoosh Nazarpour ³

1 - Assistant Professor/Azad University, Najafabad Branch
2 - Assistant Professor/Islamic Azad University, Khorasgan Branch
3 - Assistant Professor/Urmia University

Received: 2009-09-30 Accepted : 2010-04-26 Published : 2010-02-01

Keywords: PWM, DC-DC converter, Bidirectional, buck-boost, flyback, forward,

Abstract :

In this paper, a new isolated dc-dc bidirectional converter is proposed. This converter consists of two transformers (flyback and forward) and only one switch in primary side and one switch in secondary side of transformers. In this converter energy transfers to the output in both on and off switch states so power density of this converter is high This converter controlled by PWM signal. Also this converter operates over a wide input voltage range.  Theoretical analysis is presented and computer simulation and experimental results verify the converter analysis.