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Title: Discharging a DC bus capacitor of an electrical converter system

A system and method of discharging a bus capacitor of a bidirectional matrix converter of a vehicle are presented here. The method begins by electrically shorting the AC interface of the converter after an AC energy source is disconnected from the AC interface. The method continues by arranging a plurality of switching elements of a second energy conversion module into a discharge configuration to establish an electrical current path from a first terminal of an isolation module, through an inductive element, and to a second terminal of the isolation module. The method also modulates a plurality of switching elements of a first energy conversion module, while maintaining the discharge configuration of the second energy conversion module, to at least partially discharge a DC bus capacitor.
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Issue Date:
OSTI Identifier:
GM Global Technology Operations LLC (Detroit, MI) NETL
Patent Number(s):
Application Number:
Contract Number:
Resource Relation:
Patent File Date: 2011 Apr 20
Research Org:
GM Global Technology Operations LLC, Detroit, MI, (United States)
Sponsoring Org:
Country of Publication:
United States

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