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:
Aug. 21, 2007
Filed:
Nov. 04, 2005
Soon-bae Yang, Seoul, KR;
Tae-kyung Kim, Seoul, KR;
Sung-min Park, Hwaseong-si, KR;
Tae-won Kim, Anyang-si, KR;
Soon-bae Yang, Seoul, KR;
Tae-kyung Kim, Seoul, KR;
Sung-min Park, Hwaseong-si, KR;
Tae-won Kim, Anyang-si, KR;
LG Electronics Inc., Seoul, KR;
Abstract
Disclosed is a method of controlling drive speed of a motor operating in overload conditions. The method includes the steps of: driving the motor at a predetermined reference speed; detecting phase voltage and phase current applied to the motor; determining whether or not the motor is operating in overload conditions based on the detected phase voltage and phase current; and controlling the motor according to whether or not the motor is operating in overload conditions. Accordingly, the present invention can prevent occurrence of over-current due to the instantaneous acceleration of the motor to a predetermined initial speed.