The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 2010
Filed:
Aug. 28, 2007
Shih-ming Huang, Taoyuan County, TW;
Wen-shi Huang, Taoyuan County, TW;
Li-jian Wu, Shanghai, CN;
Wan-bing Jin, Shanghai, CN;
Jian-ping Ying, Shanghai, CN;
Shih-Ming Huang, Taoyuan County, TW;
Wen-Shi Huang, Taoyuan County, TW;
Li-Jian Wu, Shanghai, CN;
Wan-Bing Jin, Shanghai, CN;
Jian-Ping Ying, Shanghai, CN;
Delta Electronics, Inc., Taoyuan Hsien, TW;
Abstract
A rotary structure of a permanent magnet electric machine including a stator and a rotor is provided. The stator has K salient teeth peripherally spaced with equal intervals for forming K winding slots, wherein K is a natural number greater than 1. The rotor has an annular inner surface and has P pairs of permanent magnets peripherally spaced with equal intervals along the inner surface for rotating around the stator, wherein P is a natural number. Each permanent magnet having two sides along a peripheral direction of the rotor includes a pair of inclined surfaces on the two sides, the pair of inclined surfaces is symmetric with respect to a radial plane of the each permanent magnet, and an inclined angle α between the inclined surface and the radial plane is selected from a range of 90(1−1/(4P))<α<90(1+1/(4P)).