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H02K17/30—Structural association of asynchronous induction motors with auxiliary electric devices influencing the characteristics of the motor or controlling the motor, e.g. with impedances or switches
Asynchronmotoren, die zum Anlauf ein erhoehtes Drehmoment dadurch erhalten, dass dieSchlupfenergie durch vom sekundaeren Streufeld induzierte Tertiaerstroeme vernichtet wird