Analysis of low temperature effects on the performance of SEPIC in a fuel cell system

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A single-ended primary-inductance converter (SEPIC) is to be used at the output of a direct-methanol fuel cell (DMFC) system. In this paper, SEPIC is investigated in terms of the performance variations when the operating temperature changes from -50 degree Celsius to 71 degree Celsius. The efficiency of the converter is analyzed with respect to the temperature change. The temperature characteristics of passive elements such as resistors, capacitors and inductors are reviewed. A thermal model of a MOSFET is established, which leads into a thermal model of the converter circuit. The model is validated against results from experiments.

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Journal: TechConnect Briefs
Volume: Technical Proceedings of the 2014 Clean Technology Conference and Trade Show
Published: June 15, 2014
Pages: 155 - 158
Industry sector: Energy & Sustainability
Topics: Fuel cells & Hydrogen
ISBN: 978-1-4822-5819-6