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| Content Provider | IEEE Xplore Digital Library | 
|---|---|
| Author | Changrong Liu Jih-Sheng Lai | 
| Copyright Year | 2005 | 
| Description | Author affiliation: Maxim Integrated Products, Sunnyvale, CA (Changrong Liu) | 
| Abstract | A fuel cell power system that contains a single-phase dc-ac inverter tends to draw an ac ripple current at twice the output frequency. Such a ripple current may shorten fuel cell life span and worsen the fuel efficiency due to the hysteresis effect. The most obvious impact is it tends to reduce the fuel cell output capacity because the fuel cell controller trips under instantaneous over-current condition. In this paper, the ripple current propagation path is analyzed, and its linearized ac model is derived. The equivalent circuit model and ripple current reduction with passive energy storage component are simulated and verified with experiments. An advanced active control technique is then proposed to incorporate a current control loop in the dc-dc converter for ripple reduction. The proposed active ripple reduction method has been verified with computer simulation and hardware experiment with a proton exchange membrane type fuel cell using a multiphase dc/dc converter along with a full-bridge dc-ac inverter. Test results with open loop, single voltage loop, and the proposed active current-loop control are provided for comparison | 
| Starting Page | 2905 | 
| Ending Page | 2911 | 
| File Size | 681592 | 
| Page Count | 7 | 
| File Format | |
| ISBN | 0780390334 | 
| DOI | 10.1109/PESC.2005.1582046 | 
| Language | English | 
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Publisher Date | 2005-06-16 | 
| Publisher Place | Brazil | 
| Access Restriction | Subscribed | 
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) | 
| Subject Keyword | Frequency Control systems Fuel cells Power system control Power systems Inverters DC-DC power converters Hysteresis Equivalent circuits Energy storage | 
| Content Type | Text | 
| Resource Type | Article | 
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