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:
Jul. 22, 2014
Filed:
Aug. 04, 2011
Dong Hwan Lee, Seoul, KR;
Young Jae Park, Yongin-si, KR;
Yong Soon Park, Cheongju-si, KR;
Seung Ki Sul, Seoul, KR;
Dong Hwan Lee, Seoul, KR;
Young Jae Park, Yongin-si, KR;
Yong Soon Park, Cheongju-si, KR;
Seung Ki Sul, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
SNU R&DB Foundation, Seoul, KR;
Abstract
A method of estimating inductance of a permanent magnet synchronous motor (PMSM) includes injecting a signal having a frequency differing from an operating frequency of the PMSM into the PMSM during sensorless operation, sensing magnitudes of current responses to the injected signal, and estimating an inductance value at which the magnitude of the sensed current response is minimal to be an actual inductance value of the PMSM, thereby estimating inductance used in the PMSM regardless of position estimation error of the PMSM and thus more accurately and reliably estimating inductance of the PMSM.