Title:
POWER CONVERSION DEVICE AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2018/084027
Kind Code:
A1
Abstract:
In order to achieve a power conversion device (3) with which a motor can be stably driven, a power conversion device is provided with: an inverter (9), which converts supplied DC voltage to an AC output voltage and supplies the AC output voltage to windings, and which, in accordance with the DC voltage, changes the saturation level at which the output voltage is saturated, in order to drive a motor (4) equipped with a stator having the windings and a rotor having permanent magnets; and a controller (12) which, when the output voltage is lower than the saturation level, increases the output current of the inverter such that a magnetic flux that weakens or strengthens the magnetic flux generated by the permanent magnets is generated in the windings.
Inventors:
KISHITA KEN (JP)
LI DONGSHENG (JP)
KASAHARA REI (JP)
LI DONGSHENG (JP)
KASAHARA REI (JP)
Application Number:
PCT/JP2017/038401
Publication Date:
May 11, 2018
Filing Date:
October 24, 2017
Export Citation:
Assignee:
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)
International Classes:
H02M7/48; F24F11/86
Domestic Patent References:
| WO2016017304A1 | 2016-02-04 |
Foreign References:
| JP2004101151A | 2004-04-02 |
Other References:
See also references of EP 3422553A4
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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