A Minimum Power-Processing-Stage Fuel-Cell Energy System Based on a Boost-Inverter With a Bidirectional Backup Battery Storage

When low-voltage unregulated fuel-cell (FC) output is conditioned to generate ac power, two stages are required: a boost stage and an inversion one. In this paper, the boost-inverter topology that achieves both boosting and inversion functions in a single stage is used to develop an FC-based energy...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2011-05, Vol.26 (5), p.1568-1577
Main Authors: Minsoo Jang, Agelidis, V. G.
Format: Article
Language:English
Subjects:
Applied sciences
Bidirectional control
Boost-inverter
Converters
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
fuel cell
fuel cell power conditioning system
Fuel cells
Inverters
Power electronics, power supplies
renewable energy
Topology
Voltage control
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Description
Summary:When low-voltage unregulated fuel-cell (FC) output is conditioned to generate ac power, two stages are required: a boost stage and an inversion one. In this paper, the boost-inverter topology that achieves both boosting and inversion functions in a single stage is used to develop an FC-based energy system that offers high conversion efficiency, low-cost, and compactness. The proposed system incorporates additional battery-based energy storage and a dc-dc bidirectional converter to support instantaneous load changes. The output voltage of the boost-inverter is voltage-mode controlled and the dc-dc bidirectional converter is current-mode controlled. The load low-frequency current ripple is supplied by the battery, which minimizes the effects of such ripple being drawn directly from the FC itself. Analysis, simulation, and experimental results are presented to confirm the operational performance of the proposed system.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2010.2086490