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:
Dec. 14, 2010
Filed:
May. 30, 2007
Li-jian Wu, Shanghai, CN;
Wan-bing Jin, Shanghai, CN;
Jian-ping Yang, Shanghai, CN;
Shih-ming Huang, Taoyuan Shien, TW;
Wen-shi Huang, Taoyuan Shien, TW;
Li-Jian Wu, Shanghai, CN;
Wan-Bing Jin, Shanghai, CN;
Jian-Ping Yang, Shanghai, CN;
Shih-Ming Huang, Taoyuan Shien, TW;
Wen-Shi Huang, Taoyuan Shien, TW;
Delta Electronics, Inc., Taoyuan Hsien, TW;
Abstract
A method for testing a motor having a rotor and a winding is provided. The method includes steps of (a) providing a power to rotate the rotor to a predetermined speed, (b) removing the power, (c) measuring a terminal voltage of the winding while a current within the winding is zero, (d) obtaining a back electromotive force in the winding by compensating the terminal voltage with a performance of the rotor, (e) selecting a characteristic of the back electromotive force and (f) determining a magnetization of the motor by comparing the characteristic with a predetermined parameter.