KIEE International Transaction on Electrical Machinery and Energy Conversion Systems

The Korean Institute of Electrical Engineers (대한전기학회)
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Parameter Estimation by OE model of DC-DC Converter System for Operating Status Diagnosis

  • Jeon, Jin-Hong (Industry Applications Research Laboratory, Korea Electro-technology Research Institute) ;
  • Kim, Tae-Jin (Industry Applications Research Laboratory, Korea Electro-technology Research Institute) ;
  • Kim, Kwang-Su (Industry Applications Research Laboratory, Korea Electro-technology Research Institute) ;
  • Kim, Kwang-Hwa (Industry Applications Research Laboratory, Korea Electro-technology Research Institute)
  • Published : 2004.12.01
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Abstract

This paper deals with a parameter estimation of the DC-DC converter system for its diagnosis. Especially, we present the results of parameter estimation for the DC-DC converter model by the system identification method. The parameter estimation for the DC-DC converter system aims at the diagnosis of its operating status. For the operating status diagnosis of the DC-DC converter system, we assume that the DC-DC converter system is an equivalent model of the Buck converter and estimate the main parameter for on-line diagnosis. In addition, for verification of an estimated parameter, we compare a bode plot of the estimated system transfer function and measurement results of the HP4194 instrument. It is a control system analyzer for system transfer function measurement. Our results confirm that the main parameter for diagnosis of the DC-DC converter system can be estimated by the system identification method and that the aging status of the system can be predicted by these results on operating status.

Keywords

References

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