An Improvement of Voltage Disturbances for Fuel Cell Systems

연료 전지 시스템의 전압왜란 개선

  • 문현욱 (중앙대학 전자전기공학부) ;
  • 정은진 (중앙대학 전자전기공학부) ;
  • 김윤호 (중앙대학 전자전기공학부)
  • Published : 2005.05.01

Abstract

The fuel cell systems are one of very useful energy sources. The systems have advantages as renewable and environmental sources. To obtain AC components from fuel cells, it needs inverters. A multilevel converter is used as a power conversion system for a high power fuel cell system. Through harmonic analysis, it is shown that the harmonic components and THD increase while a fundamental component of output decreases as voltage droop increases. To solve the voltage disturbance problems, three different approaches are investigated in this paper; installation of a boost converter at the fuel cell output, control of pulse widths, and use of ultracapacitors. The proposed three approaches are analyzed and compared through simulation and experimental results.

Keywords

References

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