Abstract
When low-voltage unregulated fuel cell (FC) output is conditioned to generate AC power, two stages are usually required: a boost stage and an inversion one. In this paper, the buck-boost inverter topology that achieves both boosting and inversion functions in a single-stage is used as a building block to develop a single-phase FC-based energy system which offers high conversion efficiency, low-cost and compactness. The proposed system incorporates additional battery-based energy storage and a DC-DC bi-directional converter to support the slow dynamics of the FC. The single-phase buck-boost inverter is voltage-mode controlled and the DC-DC bi-directional converter is current-mode controlled. The low-frequency current ripple is supplied by the battery which minimizes the effects of such ripple being drawn directly from the FC itself. Experimental results from a 1kW prototype are presented to validate the performance of the proposed system.
Original language | English |
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Title of host publication | 8th International Conference on Power Electronics - ECCE Asia, ICPE 2011-ECCE Asia |
Subtitle of host publication | "Green World with Power Electronics" |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 1894-1900 |
Number of pages | 7 |
ISBN (Electronic) | 9781612849560 |
DOIs | |
Publication status | Published - 2011 |
Externally published | Yes |
Event | 8th International Conference on Power Electronics, ICPE 2011 - ECCE Asia - Jeju, Korea, Republic of Duration: 30 May 2011 → 3 Jun 2011 |
Conference
Conference | 8th International Conference on Power Electronics, ICPE 2011 - ECCE Asia |
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Country/Territory | Korea, Republic of |
City | Jeju |
Period | 30/05/11 → 3/06/11 |
Keywords
- Buck-boost-inverter
- fuel cell
- power conditioning system (PCS)