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:
Oct. 19, 2010
Filed:
Aug. 30, 2004
Bong-jun Choi, Changwon-Shi, KR;
Chang-yong Jang, Gwangju, KR;
Man-seok Cho, Geoje-Shi, KR;
Shin-hyun Park, Busan, KR;
Hyun Kim, Changwon-Shi, KR;
Jong-min Shin, Busan, KR;
Young-hoan Jeon, Changwon-Shi, KR;
Chul-gi Roh, Changwon-Shi, KR;
Bong-Jun Choi, Changwon-Shi, KR;
Chang-Yong Jang, Gwangju, KR;
Man-Seok Cho, Geoje-Shi, KR;
Shin-Hyun Park, Busan, KR;
Hyun Kim, Changwon-Shi, KR;
Jong-Min Shin, Busan, KR;
Young-Hoan Jeon, Changwon-Shi, KR;
Chul-Gi Roh, Changwon-Shi, KR;
LG Electronics Inc., Seoul, KR;
Abstract
The present invention discloses an apparatus and method for controlling a linear compressor which can actively handle load and efficiently perform an operation, by synchronizing an operation frequency with a natural frequency of a movable member varied by the load. The apparatus for controlling the linear compressor includes a counter electromotive force phase detecting unit for detecting a phase of a counter electromotive force from a voltage command value of the linear compressor and an input current, a current phase detecting unit for detecting a phase of the input current, a frequency generating unit for comparing the phase of the counter electromotive force with the phase of the input current, and generating a frequency change value, a control unit for correcting the voltage command value according to the frequency change value, and an inverter unit for receiving a direct current voltage, generating a sine wave voltage according to the corrected voltage command value, and applying the sine wave voltage to the linear compressor.