Method and apparatus for detecting stationary rotor angle of sensorless brushless DC motor, and starting method and apparatus using the same

In a sensorless brushless DC motor formed by a stator including a plurality of windings and a rotor including permanent magnet poles, inductances of the windings are detected while the rotor is stationary, and then, the angle of the stationary rotor is detected in accordance with the detected induct...

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Bibliographische Detailangaben
Hauptverfasser: Nagase, Motoharu, Fujimoto, Hiromitsu
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:In a sensorless brushless DC motor formed by a stator including a plurality of windings and a rotor including permanent magnet poles, inductances of the windings are detected while the rotor is stationary, and then, the angle of the stationary rotor is detected in accordance with the detected inductances.