New double input Sepic DC/DC converters

Abstract

In the distributed power system with more sources, the application of multiple-input converter instead of using several single-input converters can simplify the circuit , decrease the cost of the power system, but also improve the reliability of the power system. A new double-input Sepic DC/DC converter is proposed in this paper. The proposed topology has the following advantages: the circuit is simple，the voltage gain is high, the voltage stress of the switches is low and the sources can deliver power to the load individually or simultaneously. The operation modes and the steady-state analysis are presented. Finally, the MATLAB simulation and experiments on an output power 200 W prototype verify the correctness of the theoretical analysis.

Keywords

• DC/DC converter
• voltage gain
• double-input
• Sepic