Permanent magnet rotor and permanent magnet rotary assembly
AssigneeIndustrial Technology Research Institute
InventorsKun-Yi LIANG, Tse-Liang HSIAO, Chien-Chang WANG
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Abstract
A permanent magnet rotor and a permanent magnet rotary assembly are provided. The permanent magnet rotor includes a rotor core, a plurality of permanent magnets and a non-magnetic retaining ring. The rotor core is magnetically permeable. The rotor core has an outer surface and a plurality of dovetail grooves on the outer surface. The permanent magnets are respectively disposed in the plurality of dovetail grooves. The non-magnetic retaining ring is inserted over the rotor core. The plurality of permanent magnets are surrounded by the non-magnetic retaining ring. The non-magnetic retaining ring is magnetically impermeable.
Claims11
A permanent magnet rotor, comprising:
- a rotor core having an outer surface and a plurality of dovetail grooves formed on the outer surface of the rotor core, wherein the rotor core is magnetically permeable;
- a plurality of permanent magnets respectively disposed in the plurality of dovetail grooves;
- and
- a non-magnetic retaining ring inserted over the rotor core, and the plurality of permanent magnets surrounded by the non-magnetic retaining ring, wherein the non-magnetic retaining ring is magnetically impermeable.
A permanent magnet rotary assembly, comprising:
- a shaft;
- at least one permanent magnet rotor being inserted over the shaft, the at least one permanent magnet rotor comprising:
- a rotor core having an outer surface and a plurality of dovetail grooves on the outer surface, wherein the rotor core is magnetically permeable;
- a plurality of permanent magnets respectively disposed in the plurality of dovetail grooves;
- and
- a non-magnetic retaining ring inserted over the rotor core, and the plurality of permanent magnets surrounded by the non-magnetic retaining ring, wherein the non-magnetic retaining ring is magnetically impermeable;
- and
- a stator, the rotor and the shaft surrounded by the stator.
Dependencies are inferred from the claim text.