Forced Commutation Topologies In Thyristor Chopper Circuits

Edison R. Cabral da Silva

doi:10.1117/12.942986

19 October 1987 Forced Commutation Topologies In Thyristor Chopper Circuits

Edison R. Cabral da Silva

Proceedings Volume 0854, IECON '87: Motor Control and Power Electronics; (1987) https://doi.org/10.1117/12.942986
Event: IECON, Cambridge, 1987, Cambridge, MA, United States

Abstract

This paper considers the thyristor chopper circuits constituted of a power circuit (source, main thyristor, load and freewheeling diode), a basic commutation circuit and a voltage reversion circuit (to make the commutation capacitor voltage polarity adequate to commutate the main thyristor current). Different possibilities of connection of basic commutation circuits into the chopper power circuit and possible techniques for reversal of commutation capacitor voltage polarity are presented. As a result, derivation of large number of topologies is systematised.

Citation Download Citation

Edison R. Cabral da Silva "Forced Commutation Topologies In Thyristor Chopper Circuits", Proc. SPIE 0854, IECON '87: Motor Control and Power Electronics, (19 October 1987); https://doi.org/10.1117/12.942986

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