Position detection device for permanent magnetic machines

The invention indicates a correct one of multiple rotor positions. For example, the invention can determine, in a PM machine, which of two possible positions a rotor is in when the position is known only within ±pi radians. If the actual rotor position is known to be one of omega and omega+pi, for e...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HAO LEI, ZHAO ZILAI
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The invention indicates a correct one of multiple rotor positions. For example, the invention can determine, in a PM machine, which of two possible positions a rotor is in when the position is known only within ±pi radians. If the actual rotor position is known to be one of omega and omega+pi, for example as indicated by a resolver, the proposed invention can be used to determine whether the actual position is omega or omega+pi.