Title:
ELECTRIC MOTOR DRIVING DEVICE AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2018/078849
Kind Code:
A1
Abstract:
Provided are an electric motor driving device and an air conditioner capable of improving efficiency in a low-speed range where an electric motor rotates at a low speed. An electric motor driving device (100) is for driving an electric motor (2) having stator windings (U, V, W), and comprises: a connection switching unit (3) that switches the connection state of each of the stator windings (U, V, W) to either of a first connection state and a second connection state different from the first connection state; and an inverter (1) that converts DC voltage into AC driving voltage and supplies AC driving voltage to each of the stator windings (U, V, W), wherein the inverter (1) has MOS transistors (11a, 12a, 13a, 14a, 15a, 16a) as switching elements.
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| JP6709325 | Motor system |
Inventors:
TSUCHIYA ATSUSHI (JP)
YAMAKAWA TAKASHI (JP)
IWAZAKI KENJI (JP)
UEMURA KEISUKE (JP)
ARISAWA KOICHI (JP)
YAMAKAWA TAKASHI (JP)
IWAZAKI KENJI (JP)
UEMURA KEISUKE (JP)
ARISAWA KOICHI (JP)
Application Number:
PCT/JP2016/082238
Publication Date:
May 03, 2018
Filing Date:
October 31, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P25/18
Domestic Patent References:
| WO2007098227A2 | 2007-08-30 |
Foreign References:
| JP2008228513A | 2008-09-25 | |||
| JP2016099029A | 2016-05-30 | |||
| JPH06253594A | 1994-09-09 |
Attorney, Agent or Firm:
MAEDA Minoru et al. (JP)
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