SCALABLE MULTI-LEVEL POWER CONVERTER

A multilevel power converter, or inverter, for converting a direct current electrical power to an alternating current electrical power includes one or more 2-level converters each including gallium nitride (GaN) transistors configured to switch two input lines to a three-phase output line. The multi...

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Bibliographische Detailangaben
Hauptverfasser: KAR, Narayan, Chandra, KUNDU, Animesh, SINKULAR, Jasmin, Jijina, GHOSH, Eshaan, BANERJEE, Debmalya, TIAN, Jiangbo, LAI, Chunyan, KORTA, Philip, IYER, Lakshmi, Varaha
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A multilevel power converter, or inverter, for converting a direct current electrical power to an alternating current electrical power includes one or more 2-level converters each including gallium nitride (GaN) transistors configured to switch two input lines to a three-phase output line. The multilevel power converter may be used in a motor drive circuit, which may provide a 3-phase AC supply. Two power converters, which may be 2-level or 3-level power converters, may be alternately switched to provide the AC power to an AC motor by an output stage including bi-directional switching transistors configured to switch a corresponding three-phase output lines from the multilevel power converters. The multilevel power converters switch input lines from a neutral-point clamped input stage including capacitors connected in series across input terminals having a DC voltage therebetween to energize a midpoint terminal with an intermediate voltage half of the voltage between the input terminals.