Method of control of magnetic sound of alternating current rotating machine

A method for greatly reducing magnetic sound of an alternating current rotating machine compared with the past comprising superimposing an n−1-th order frequency in inverse turn on a multi-phase alternating current with reference to a basic frequency component of the multi-phase alternating current...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Yoshinaga, Soichi, Wakabayashi, Kenichi
Format: Patent
Sprache:eng
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