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Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 31, 2017
Patent Application Number
14597261
Date Filed
January 15, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
Methods and charging apparatus are presented for charging cell capacitors of a multilevel power conversion system, in which an auxiliary charging source is selectively applied across DC bus terminals while one or more selected multilevel converter cells are alternately switched between a first state to bypass the selected cell or cells and a second state to charge the cell capacitor or capacitors of the selected cell via charging current from the auxiliary charging source.
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