期刊
IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS
卷 150, 期 5, 页码 531-538出版社
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/ip-epa:20030659
关键词
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A topology for voltage-space phasor generation equivalent to a five-level inverter for an open-end winding induction motor is presented. The open-end winding induction motor is fed from both ends by two three-level inverters. The three-level inverters are realised by cascading two two-level inverters. This inverter scheme does not experience neutral-point fluctuations. Of the two three-level inverters only one will be switching at any instant in the lower speed ranges. In the multilevel carrier-based SPWM used for the proposed drive, a progressive discrete DC bias depending on the speed range is given to the reference wave to reduce the inverter switchings. The drive is implemented and tested with a 1 HP open-end winding induction motor and experimental results are presented.
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