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:
May. 23, 2017
Filed:
Jun. 19, 2014
Applicant:
Lsis Co., Ltd., Anyang-si, Gyeonggi-do, KR;
Inventor:
Anno Yoo, Seoul, KR;
Assignee:
LSIS CO., LTD., Anyang-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 6/16 (2016.01); H02P 6/20 (2016.01); H02P 1/26 (2006.01); H02P 6/18 (2016.01); H02P 21/18 (2016.01);
U.S. Cl.
CPC ...
H02P 6/20 (2013.01); H02P 1/265 (2013.01); H02P 6/18 (2013.01); H02P 21/18 (2016.02);
Abstract
An apparatus for determining start of electric machine is disclosed wherein a frequency of a 3-phase current inputted from a motor is estimated to determine whether the motor has started using a difference between the estimated frequency and a frequency of output voltage of inverter configured to drive the motor.