Bus voltage limiter for converter apparatus with multiple DC buses

An apparatus includes a first DC bus, a second DC bus, a first converter circuit coupled to the first DC bus, and a second converter circuit coupled to the second DC bus. The apparatus further includes a limiter circuit coupled to the second DC bus, a first control circuit configured to sense a volt...

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Bibliographische Detailangaben
1. Verfasser:	Simms, Stan Rex
Format:	Patent
Sprache:	eng
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 OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Beschreibung
Zusammenfassung:	An apparatus includes a first DC bus, a second DC bus, a first converter circuit coupled to the first DC bus, and a second converter circuit coupled to the second DC bus. The apparatus further includes a limiter circuit coupled to the second DC bus, a first control circuit configured to sense a voltage on the first DC bus and to responsively control the first converter circuit to limit the voltage on the first DC bus, and a second control circuit configured to sense a voltage on the second DC bus and to responsively control the limiter circuit to limit the voltage on the second DC bus. The apparatus may include a modulation conversion circuit configured to provide a set of switch control signals to the converter circuits and implemented in a module that is also used to implement the second control circuit.