ROTOR MAGNET RETENTION STRUCTURE IN BRUSHLESS MOTOR

ROTOR MAGNET RETENTION STRUCTURE IN BRUSHLESS MOTOR

A brushless direct-current (BLDC) motor is provided. The motor includes a stator including a stator core and windings; a rotor shaft disposed within the stator and extending along a longitudinal axis; and a rotor including a rotor core fixedly mounted on the rotor shaft and at least one permanent ma...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHAH, BHAIRAV A, SANCHEZ, ABRAHAM, GANZERMILLER, AUSTIN L, LU, CHANGXING
Format: Patent
Sprache:eng
Schlagworte:
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Beschreibung
Zusammenfassung:A brushless direct-current (BLDC) motor is provided. The motor includes a stator including a stator core and windings; a rotor shaft disposed within the stator and extending along a longitudinal axis; and a rotor including a rotor core fixedly mounted on the rotor shaft and at least one permanent magnet mounted on an outer surface of the rotor core. A sleeve is provided including a substantially cylindrical body mounted on the at least one permanent magnet and a flange that engages a first axial end of the at least one permanent magnet to constrain the at least one permanent magnet radially and along a first axial direction. Further, a fan is mounted on the rotor shaft and engaging a second axial end of the at least one permanent magnet to constrain the at least one permanent magnet along a second axial direction.