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. 02, 2008
Filed:
Jan. 10, 2006
Weizi Wang, Shanghai, CN;
Zhigan Wu, Shanghai, CN;
Wanbing Jin, Shanghai, CN;
Jianping Ying, Shanghai, CN;
Shih-ming Huang, Taoyuan Shien, TW;
Wen-shi Huang, Taoyuan Shien, TW;
Weizi Wang, Shanghai, CN;
Zhigan Wu, Shanghai, CN;
Wanbing Jin, Shanghai, CN;
Jianping Ying, Shanghai, CN;
Shih-Ming Huang, Taoyuan Shien, TW;
Wen-Shi Huang, Taoyuan Shien, TW;
Delta Electronics Inc., Taoyuan Hsien, TW;
Abstract
The method and circuit for controlling a sensorless single-phase BLDCM having a stator with a winding are proposed. The provided controlling circuit includes a power supply circuit, an inverter coupled to the winding and the power supply circuit, a BEMF detecting circuit coupled to the winding and the inverter and measuring a BEMF of the winding, and a controller coupled to the power supply circuit, the inverter and the BEMF detecting circuit and analyzing a status of the BEMF to control the BLDCM accordingly. The provided method is based on the motor winding time-sharing theory, and the controller controls the inverter to make the winding used as a driving element with loading current when the absolute value of the BEMF is relatively large and as a sensing element when the absolute value of the BEMF is relatively small.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile