Electric power conversion systems – Current conversion – Having plural converters for single conversion
Patent
1998-06-30
2000-05-02
Wong, Peter S.
Electric power conversion systems
Current conversion
Having plural converters for single conversion
363132, 363 98, H02M 7217
Patent
active
060580313
ABSTRACT:
A high power motor drive converter includes: a five level hybrid NPC output power conversion stage including three NPC phase bridges having switches and coupled in a wye configuration through a converter neutral point, each NPC phase bridge receiving power on a respective direct current bus; three isolated split series-connected DC capacitor banks each coupled in parallel to a respective one of the three NPC phase bridges; and a controller for selecting switch positions with active control of neutral voltages. The controller is adapted to select switch positions using feedforward sine-triangle modulation with third harmonic injection, zero sequence injection, and/or discontinuous modulation injection.
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Espelage Paul Martin
Esser Albert Andreas Maria
Lyons James Patrick
Vlatkovic Vlatko
Wang, Sr. Fei Fred
Agosti Ann M.
Breedlove Jill M.
General Electric Company
Laxton Gary L.
Wong Peter S.
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