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Singular perturbation modelling technique and analysis for class-E DC–DC converter using piezoelectric transformer

Singular perturbation modelling technique and analysis for class-E DC–DC converter using piezoelectric transformer

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  • Author(s): P. Dong 1 ; K.W.E. Cheng 1 ; K.W. Kwok 2 ; S.L. Ho 1 ; Y. Lu 1 ; J.M. Yang 3
    • View affiliations
    • Affiliations: 1: Power Electronics Research Center, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China
      2: Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China
      3: Power Electric College, South China University of Technology, People's Republic of China
  • Source: Volume 1, Issue 4, December 2008, p. 518 – 526
    DOI:  10.1049/iet-pel:20060476 , Print ISSN 1755-4535, Online ISSN 1755-4543
© The Institution of Engineering and Technology
Published

A singular perturbation technique for modelling and simulation of a class-E DC–DC converter with piezoelectric transformer (PT) is presented. The open-loop characteristics of this converter are analysed. The singular perturbation method and the generalised state-space method are compared to model this DC–DC converter. In addition, a precise model which is based on the exact equations is used as a reference value. The calculation results show that the two proposed models give very good agreement to the precise model. As the singular perturbation model gives simple approach and a decoupling method has been used, it is highly recommended for all the PT models. The method has been examined and analysed in class-E DC–DC converter.

Inspec keywords: power transformers; DC-DC power convertors

Other keywords: piezoelectric transformer; singular perturbation modelling technique; open-loop characteristics; class-E DC-DC converter

Subjects: Power electronics, supply and supervisory circuits; Power convertors and power supplies to apparatus; Transformers and reactors

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