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Title:
ELECTRIC MOTOR DRIVING DEVICE AND ELECTRIC MOTOR STARTUP METHOD
Document Type and Number:
WIPO Patent Application WO/2019/026110
Kind Code:
A1
Abstract:
The present invention has a control device (100) that is capable of switching windings between a star connection and a delta connection. The control device (100) controls an inverter (30) that applies a frequency- and voltage-variable alternating current voltage to an electric motor (7) in which a counter electromotive force is switched by the switching of the connection state. The electric motor (7) is started with a startup condition determined in accordance with the connection state. Startup is performed with different startup conditions depending on the connection state, and startup can therefore be reliably performed in a short period of time, regardless of the connection state,

Inventors:
ARISAWA Koichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
YAMAKAWA Takashi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
IWAZAKI Kenji (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2017/027646
Publication Date:
February 07, 2019
Filing Date:
July 31, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
H02P1/32
Domestic Patent References:
WO2015193948A12015-12-23
Foreign References:
JP2013028877A2013-02-07
JPH05146183A1993-06-11
Attorney, Agent or Firm:
MAEDA Minoru et al. (MAEDA & YAMAGATA, Koda Bldg. 4F 16-2, Yoyogi 2-chome, Shibuya-k, Tokyo 53, 〒1510053, JP)
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