作者: Masayoshi Suhama , Eiji Sato , Masaki Okamura
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摘要: In a drive system of an AC motor in which current is feedback-controlled, command produced normal operation according to torque value on optimum efficiency characteristic line so as select phase maximizing output with constant amplitude. Conversely, when the produces excessively generated power exceeding regeneratable quantity motor, consuming performed for intentionally increasing loss motor. operation, increase change from above value. Thereby, can be increased consume surplus without causing instability control.