Abstract
This paper compares three starting methods for a single-phase interior permanent magnet synchronous motor. One is a line-start capacitor motor with a starting cage. The second is the same cage motor with an open-loop variable-voltage fixed-frequency inverter. The third uses the same motor without its starting cage, fed from a closed-loop current-regulated inverter with shaft position feedback. The computed starting performance is compared with test data for all three cases.
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