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:
Apr. 20, 2004
Filed:
Jun. 14, 2002
Applicant:
Inventors:
Assignee:
LG Electronics, Inc., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 5/28 ;
U.S. Cl.
CPC ...
H02P 5/28 ;
Abstract
An apparatus is provided for controlling rotation speed of a synchronous reluctance motor, including a position estimation unit for controlling rotation speed of the synchronous reluctance motor by estimating the position angle of the rotor and rotation speed of the rotor according to the low speed or high speed region. The apparatus can control the motor in the high speed area or low speed area, stabilize the transient state generated in the process that the motor is converted from the low speed area to the high speed area and show stable speed control performance, thus performing more precise speed control.