Title:
MOTOR CONTROLLER OF AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2009/066838
Kind Code:
A3
Abstract:
The present invention relates to a motor controller (200) for air conditioner including a converter (210) having at least one switching element for converter, the converter converting AC utility power into DC power by a switching operation of the switching element; an inverter (220) having at least one switching element for inverter, the inverter converting the DC power into prescribed AC power by a switching operation of the switching element and driving a three-phase motor (250); a microcomputer (230) outputting a converter switching control signal that controls the switching element for converter (210); and a dc terminal signal generator (D) detecting a dc terminal voltage that is applied across an dc terminal of the converter to sequentially generate a pulse type dc terminal signal, and insulating the dc terminal from the microcomputer (230).
Inventors:
LEE CHUNG HUN (KR)
HWANG SUN HO (KR)
JUNG HAN SU (KR)
HWANG SUN HO (KR)
JUNG HAN SU (KR)
Application Number:
PCT/KR2008/002225
Publication Date:
June 30, 2011
Filing Date:
April 18, 2008
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
LEE CHUNG HUN (KR)
HWANG SUN HO (KR)
JUNG HAN SU (KR)
LEE CHUNG HUN (KR)
HWANG SUN HO (KR)
JUNG HAN SU (KR)
International Classes:
F24F11/00; H02M5/458
Foreign References:
| JPH1151454A | 1999-02-26 | |||
| JPH0549261A | 1993-02-26 | |||
| JP2006180649A | 2006-07-06 | |||
| US20010001227A1 | 2001-05-17 |
Attorney, Agent or Firm:
PARK, Byung Chang (824-24Yeoksam-dong, Kangnam-gu, Seoul 135-080, KR)
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