Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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New Approach for Stability of Perturbed DC-DC Converters

  • Hote, Yogesh V. (Department of Instrumentation and Control Engineering, NSIT, University of Delhi) ;
  • Choudhury, D. Roy (Dept. of Computer Science, IGIT) ;
  • Gupta, J.R.P. (Department of Instrumentation and Control Engineering, NSIT, University of Delhi)
  • Published : 2009.01.20
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Abstract

In this paper, a simple technique is presented for robust stability testing of perturbed DC-DC converters having multi-linear uncertainty structure. This technique provides a necessary and sufficient condition for testing robust stability. It is based on the corollary of Routh criterion and gridding of parameters. The previous work based on parametric control theory using Kharitonov's theorem and Hermite Biehler theorem gives conservative results and only the sufficient condition of stability, whereas the proposed method provides the necessary and sufficient condition for testing robust stability and it is computationally efficient. The superiority of the method is compared with the Edge theorem.

Keywords

References

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