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http://dx.doi.org/10.6113/JPE.2011.11.4.551

High-Efficiency Grid-Tied Power Conditioning System for Fuel Cell Power Generation  

Jeong, Jong-Kyou (Dept. of Electrical Engineering, Myongji University)
Han, Byung-Moon (Dept. of Electrical Engineering, Myongji University)
Lee, Jun-Young (Dept. of Electrical Engineering, Myongji University)
Choi, Nam-Sup (Div. of Electrical Electronic Communication and Computer Eng., Chonnam National University)
Publication Information
Journal of Power Electronics / v.11, no.4, 2011 , pp. 551-560 More about this Journal
Abstract
This paper proposes a grid-tied power conditioning system for the fuel cell power generation, which consists of a 2-stage DC-DC converter and a 3-phase PWM inverter. The 2-stage DC-DC converter boosts the fuel cell stack voltage of 26-48V up to 400V, using a hard-switching boost converter and a high-frequency unregulated LLC resonant converter. The operation of the proposed power conditioning system was verified through simulations with PSCAD/EMTDC software. Based on the simulation results, a laboratory experimental set-up was built with a 1.2kW PEM fuel-cell stack to verify the feasibility of hardware implementation. The developed power conditioning system shows a high efficiency of 91%, which is a very positive result for the commercialization.
Keywords
DSP (Digital Signal Processor); LLC resonant DC-DC converter; Nernst model; PEM (Proton Exchange Membrane) fuel cell;
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