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    Primary-side sensing for a flyback converter in both continuous and discontinuous conduction mode


    Trong Vu, T. and Ringwood, John (2012) Primary-side sensing for a flyback converter in both continuous and discontinuous conduction mode. Proceedings of the Irish Signals and Systems Conference, Maynooth (ISSC 2012).

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    Abstract

    Primary-side sensing is an observer-based approach to estimate the output voltage of flyback converters from a primary winding (or an auxiliary winding). Various observer-laws have been recently developed for flyback converters operating in discontinuous conduction mode (DCM). The extension to continuous conduction mode (CCM), however, has not been considered due to the difficulties in compensating for the voltage drop in the secondary winding. From the possibility to predict the winding voltage drop using the magnetizing current and the transformer model, this paper presents a new observer method that can work accurately and smoothly in both CCM and DCM. The methodology can be combined with any controller to provide either output voltage regulation or output current regulation. The proposed sensing technique is verified by simulation.

    Item Type: Article
    Keywords: Primary side sensing; flyback converter; continuous conduction mode; discontinuous conduction mode;
    Academic Unit: Faculty of Science and Engineering > Electronic Engineering
    Item ID: 6865
    Depositing User: Professor John Ringwood
    Date Deposited: 19 Jan 2016 16:47
    Journal or Publication Title: Proceedings of the Irish Signals and Systems Conference, Maynooth (ISSC 2012)
    Publisher: ISSC
    Refereed: Yes
    URI:

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