Control for three-phase direct frequency converter - has electronic switches controlled via emitter followers and limiters from transformers

Control for three-phase direct frequency converter - has electronic switches controlled via emitter followers and limiters from transformers

The control circuit, for a direct frequency converter that uses an electronic switch for each phase of a three-phase system, has the control input of each one-way electronic switch in each phase pair connected to the outputs of an emitter follower. Each emitter follower is supplied from the secondar...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BARAMOVA, BISTRA DIMITROVA, ANTONOV, NIKOLAY PARVANOV, NESTOROV, BORIS TODOROV, VLADKOV, EMIL PENTCHEV, TOMOV, VLADIMIR TOMOV, MAVROV, MAVER NIKOLOV
Format: Patent
Sprache:eng ; ger
Schlagworte:
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:The control circuit, for a direct frequency converter that uses an electronic switch for each phase of a three-phase system, has the control input of each one-way electronic switch in each phase pair connected to the outputs of an emitter follower. Each emitter follower is supplied from the secondary winding of the appropriate phase transformer via an amplitude limiter. Each transformer primary winding is connected to the next phase. The control circuit is simple and reliable, and avoids the disadvantages inherent in other types of control.