Average Modelling and Small Signal Characterization of a ZVS Clamp-Switch Boost Converter

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 8Sprache: EnglischTyp: PDF

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Ulrich, Burkhard (Baden-Wuerttemberg Cooperative State University Stuttgart, DHBW Stuttgart, Germany)

An averaged circuit model for a constant frequency operated clamp-switch ZVS boost converter is derived. The model is suitable for use with standard circuit simulation programs, e.g. SPICE, and can be used to predict the large and small signal behavior of the converter. Compared to the conventional PWM switch model for the discontinuous conduction mode, the influence of the resonant capacitor charging interval and the clamp current is modelled more correctly, which is verified by comparing the proposed model to cycle by cycle simulations and small signal measurements on a prototype converter.