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. 21, 2006
Filed:
Jan. 19, 2005
June Hee Won, Seoul, KR;
Jae Yoon OH, Kwangmyung-si, KR;
Gil Su Lee, Seoul, KR;
Dal Ho Cheong, Seoul, KR;
Kyung Hoon Lee, Seoul, KR;
June Hee Won, Seoul, KR;
Jae Yoon Oh, Kwangmyung-si, KR;
Gil Su Lee, Seoul, KR;
Dal Ho Cheong, Seoul, KR;
Kyung Hoon Lee, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Abstract
A sensorless motor drive apparatus and a method for protecting and controlling the same. The sensorless motor drive apparatus includes a unit for determining the presence or absence of a position estimation error of a rotor contained in a motor using a current value applied to the motor and a position estimation angle of the rotor. Therefore, the sensorless motor drive apparatus determines the presence or absence of the position estimation error of the rotor without using a sensor, so that it reduces production costs, prevents the motor from generating a faulty operation, and prevents a compressor including the motor from being damaged.