Input current ripple reduction and high efficiency for PEM fuel cell power conditioning system

To solve the issues of the open-loop control accuracy in a proton exchange membrane (PEM) fuel cell power conditioning system (PCS) with active clamp push-pull DC/DC converter for input current ripple reduction, a novel closed-loop digital-controlled method is proposed. The proposed PEM fuel cell PC...

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Bibliographic Details
Published in2017 20th International Conference on Electrical Machines and Systems (ICEMS) pp. 1 - 6
Main Authors Yuedong Zhan, Youguang Guo, Jianguo Zhu, Li Li
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2017
Subjects
Clamps
Fuel cells
Input current ripple reduction
Inverters
Power conditioning
Power conditioning system
Proton exchange membrane (PEM) fuel cell
Topology
Uninterruptible power systems
Voltage control
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Summary:To solve the issues of the open-loop control accuracy in a proton exchange membrane (PEM) fuel cell power conditioning system (PCS) with active clamp push-pull DC/DC converter for input current ripple reduction, a novel closed-loop digital-controlled method is proposed. The proposed PEM fuel cell PCS consists of a high-efficiency high-step-up current-fed resonant push-pull DC/DC converter and a half-bridge inverter. A fully digital-controlled strategy in the active-clamped circuit is employed to reduce the voltage spike and low frequency current ripple (LFCR) on the power switches for improving the lifespan of PEM fuel cell and raising the system reliability. By using the closed-loop current ripple reduction control, the LFCR is further reduced. A 300 W prototype is implemented and tested. Experimental results show that the minimum efficiency at full load is about 94.8% and the ripple current is less than 1.2% of the rated input current.
DOI:10.1109/ICEMS.2017.8056375