Title:
POWER CONVERSION DEVICE AND AIR CONDITIONER EQUIPPED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2018/043258
Kind Code:
A1
Abstract:
Provided is a highly reliable power conversion device. This power conversion device (30) is equipped with: a power conversion unit (31), which has upper arm switching elements (S1, S3, and S5) connected to the positive side of a smoothing capacitor (C) and lower arm switching elements (S2, S4, and S6) connected to the negative side of the smoothing capacitor (C), and which converts DC voltage applied from the smoothing capacitor (C) to a drive voltage for a motor (11a); and a control unit (33) which, when the motor (11a) is stopped, alternately repeats a first state in which at least two of the switching elements of one of the arms, that is, the upper arm or the lower arm, are turned on, and the other switching elements are turned off, and a second state in which the upper arm switching elements and the lower arm switching elements (S1-S6) are turned off.
Inventors:
HATSUSE WATARU (JP)
TAMURA MASAHIRO (JP)
EBATA YUKI (JP)
TAMURA MASAHIRO (JP)
EBATA YUKI (JP)
Application Number:
PCT/JP2017/030195
Publication Date:
March 08, 2018
Filing Date:
August 23, 2017
Export Citation:
Assignee:
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)
International Classes:
H02M7/48; H02P3/06
Domestic Patent References:
| WO2014038013A1 | 2014-03-13 |
Foreign References:
| JP2009284747A | 2009-12-03 | |||
| JPH09140184A | 1997-05-27 | |||
| JP2008061404A | 2008-03-13 | |||
| JPS63206188A | 1988-08-25 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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