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:
Dec. 23, 2008
Filed:
Nov. 17, 2004
Applicants:
Jae-yoo Yoo, Gyeonggi-do, KR;
Chel-woong Lee, Seoul, KR;
Ji-won Sung, Seoul, KR;
Inventors:
Assignee:
LG Electronics Inc., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/00 (2006.01); H02P 5/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to an apparatus and method for controlling operation of a reciprocating compressor. The operating efficiency of the compressor can be improved by performing the steps of: detecting a current and a stroke applied a compressor; a calculating a mechanical resonance frequency by using the detected current and stroke; and determining an operating frequency command value by adding or subtracting the present operating frequency so as to be within a predetermined range of the calculated mechanical resonance frequency and then driving the compressor by the operating frequency command value.