Analysis and comparison of a new passive lossless snubber for high frequency converter application

X. He, B. W. Williams, S. J. Finney, T. C. Green

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Two variations of a new adaptive turn on/off snubber configuration are developed where energy trapped in the snubber is fully recovered, passively, into the DC rail, in addition to the load, without any active devices or resistors. The circuit may be operated in a soft-clamped,or hard-clamped snubber mode. The circuit models are analyzed in detail and their relative circuit performance are compared. Besides individual advantages, the two variations of the snubber possess the common characteristics that maximum over-shoot voltage on the switch is fixed, peak switch current is low and the operational range of load current is wider than conventional snubbers. The application of the two variations of the snubber, for use in high frequency power converters, is discussed and design equations are given, along with simulations and experimental results for an IGBT converter.

Original languageEnglish
Title of host publicationMaterials and Devices
Pages344-349
Number of pages6
Volume2
Edition377
Publication statusPublished - 1993
EventProceedings of the 5th European Conference on Power Electronics and Applications - Brighton, Engl
Duration: 13 Sep 199316 Sep 1993

Conference

ConferenceProceedings of the 5th European Conference on Power Electronics and Applications
CityBrighton, Engl
Period13/09/9316/09/93

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  • Cite this

    He, X., Williams, B. W., Finney, S. J., & Green, T. C. (1993). Analysis and comparison of a new passive lossless snubber for high frequency converter application. In Materials and Devices (377 ed., Vol. 2, pp. 344-349)