The rotating electric motor includes a stator including a stator coil and a stator core, and a rotor located at an inner peripheral side of the stator core and rotatable relative to the stator. The rotor includes a rotor core provided at an outer periphery of a rotor rotation shaft via a core support portion. The rotor core has a plurality of magnetic poles in which a plurality of sets of permanent magnets are provided along a circumferential direction. The rotor core includes a plurality of rotor core divided bodies that are aligned in an axial direction, concentrically arranged, and shifted in phase from each other by a determined angle. A pair of grooves are provided on an outer peripheral portion of each rotor core divided body to be spaced apart from each other in the circumferential direction with a center of each magnetic pole.
Skewed rotor cores with grooves for reducing cogging torque
01.10.2019
Patent
Elektronische Ressource
Englisch
Skewed stator cores for improved torque and efficiency
Europäisches Patentamt | 2019
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|Method of Reducing Cogging Torque in Permanent Magnet Motor
British Library Online Contents | 2002
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