Design and Control of DC-DC Converter for the Military Application Fuel Cell

This paper presents a 24 watts SEPIC converter design and control using microprocessor. SEPIC converter has advantages of a wide input range and miniaturization caused by the low stress at elements. There is also an advantage that the input and output are isolated in MOSFET-off state. This paper presents the PID control through the SEPIC converter transfer function using a DSP and the protective circuit for fuel cell from the over-current and inverse-voltage by using the characteristic of SEPIC converter. Then it derives them through the experiments.

Authors:

• Tae-Yeong Lee
• Eun-Ju Yoo
• Won-Yeong Choi
• Young-Woo Park

Keywords:

• DC-DC Converter
• Fuel-Cell
• Microprocessor Control
• Military Converter
• SEPIC Converter

References:

[1] Su-Jin Jang, Tae-Won Lee, Won-Chul Lee, Chung-Yuen Won,
"Bi-directional DC-DC Converter for Fuel Cell Generation System",
Power Electronics Specialists Conference, Germany, 2004, pp.
4722-4728.
[2] Su-Hwan Baek, Seongyop Lim, Young-Chul Park, Doo-Hwan Jung,
Sang-Kyung Kim, Mignon Park, Dong-Hyun Peck, "Performance and
Operating Characteristics of a 20W Class DMFC Stack", 44th Power
Sources Conference, Las Vegas, Nevada, June,2010, pp. 223-226.
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Design Guidelines, National Semiconductor in Application Note, April,
2008, pp. 1-6.
[4] Ray Ridley, "Analyzing the Sepic Converter", Power Systems Design
Europe, November, 2006, pp. 14-18.
[5] "SEPIC Equations and Component Ratings", Maxim Integrated Products,
April, 2002, Appnote 1051, 2005