A single-stage fuel cell energy system based on a buck-boost inverter with a back-up unit

M. Jang, M. Ciobotaru, V. G. Agelidis

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

4 Citations (Scopus)

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 languageEnglish
Title of host publication8th International Conference on Power Electronics - ECCE Asia, ICPE 2011-ECCE Asia
Subtitle of host publication"Green World with Power Electronics"
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1894-1900
Number of pages7
ISBN (Electronic)9781612849560
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event8th International Conference on Power Electronics, ICPE 2011 - ECCE Asia - Jeju, Korea, Republic of
Duration: 30 May 20113 Jun 2011

Conference

Conference8th International Conference on Power Electronics, ICPE 2011 - ECCE Asia
CountryKorea, Republic of
CityJeju
Period30/05/113/06/11

Keywords

  • Buck-boost-inverter
  • fuel cell
  • power conditioning system (PCS)

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