Prediction of switching loss variations by averaged switch modeling

O. Al-Naseem; R.W. Erickson; P. Carlin

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https://doi.org/10.1109/apec.2...

Article . 2002 . Peer-reviewed

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https://dx.doi.org/10.1109/ape...

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Prediction of switching loss variations by averaged switch modeling

descriptionPublicationkeyboard_double_arrow_right Article 07 Nov 2002Publisher:IEEEJournal:APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058), volume 1, pages 242-248

Authors: O. Al-Naseem; R.W. Erickson; P. Carlin;

doi: 10.1109/apec.2000.826111

Prediction of switching loss variations by averaged switch modeling

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Abstract

An analytical averaged equivalent circuit model is derived revealing how dominant loss mechanisms vary with power converter operating point in a PWM converter. The model is based on the operational characteristics of power diodes and IGBTs. Laboratory experiments support the derived model and confirm that IGBT current tailing and diode reverse-recovery are indeed the most critical losses in a PWM converter. These losses are more significant at light load, hence reducing the energy capture of converters used in wind generation.

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