LINE START TWO-SPEED PM BRUSHLESS MOTOR

An electric motor is disclosed that includes a stator winding (14) defining a plurality of poles (40), with the winding being controllable to switch between a first number of poles and a second number of poles. A rotor (40) rotatable within the stator (12) includes a first group of magnetic flux bar...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	GIERAS, Jacek F
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	An electric motor is disclosed that includes a stator winding (14) defining a plurality of poles (40), with the winding being controllable to switch between a first number of poles and a second number of poles. A rotor (40) rotatable within the stator (12) includes a first group of magnetic flux barriers (26) being without permanent magnet material and a second group of magnetic flux barriers (26) at least partially filled with a permanent magnet material (28). A method of operating a line-start electric motor is also disclosed.