Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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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)
  • Received : 2010.11.27
  • Published : 2011.07.20
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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.

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References

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