Permanent magnet rotary structure of electric machine
AssigneeDelta Electronics, Inc.
InventorsLijian Wu, Wanbing Jin, Jianping Ying, Shih-Ming Huang, Wen-Shi Huang
Life of this patent
Estimating the term…
Abstract
A permanent magnet motor is provided. The permanent magnet motor includes a stator having a stator shaft having an outer surface, K salient teeth formed upon the outer surface, and K winding slots formed among the K salient teeth, and a rotor having a first inner surface facing the outer surface, and P pairs of permanent magnets formed on the first inner surface, each of which has a second inner surface facing the outer surface and at least a groove formed on the second inner surface to reduce a cogging torque.
Claims16
A permanent magnet motor, comprising:
- a stator, comprising:
- a stator shaft having an outer surface;
- K salient teeth formed upon the outer surface;
- and
- K winding slots formed among the K salient teeth;
- and
- a rotor, comprising:
- a first inner surface facing the outer surface;
- and
- P pairs of permanent magnets formed on the first inner surface, each of which has a second inner surface facing the outer surface and at least a groove formed on the second inner surface to reduce a cogging torque.
A permanent magnet motor, comprising:
- a stator, comprising:
- an inner surface;
- K salient teeth formed on the inner surface;
- and
- K winding slots formed among the K salient teeth;
- and
- a rotor, comprising:
- a rotor shaft having a first outer surface facing the inner surface;
- and
- P pairs of permanent magnets formed upon the first outer surface, each of which has a second outer surface facing the inner surface, and at least a groove formed on the second outer surface to reduce a cogging torque.
Dependencies are inferred from the claim text.