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Patent Searching and Data


Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/042672
Kind Code:
A1
Abstract:
A motor control device of the present invention is applied in a configuration in which a plurality of synchronous motors mechanically connected in parallel with each other are driven by means of a single power converter, and is provided with a vector control unit 110 and an abnormality detection unit 120. The vector control unit 110 divides currents flowing in and out of a plurality of synchronous motors 201a, 201b, 201c, 201d into a q-axis current and a d-axis current and controls the q-axis current and the d-axis current on the basis of a q-axis current command value iq* and a d-axis current command value id*, respectively. The abnormality detection unit 120 detects, on the basis of a q-axis inductance Lq, the q-axis current command value iq*, a synchronous motor rotation speed ω, and a d-axis voltage command value vd*, whether or not erroneous wiring or a disconnection is present in at least one synchronous motor among the plurality of synchronous motors 201a, 201b, 201c, 201d.

Inventors:
HIGASHINO MAKOTO (JP)
TERASHIMA SATORU (JP)
Application Number:
PCT/JP2016/076037
Publication Date:
March 08, 2018
Filing Date:
September 05, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/22; H02P29/024
Domestic Patent References:
WO2014013614A12014-01-23
Foreign References:
JP2015119600A2015-06-25
JP2013106424A2013-05-30
JP2014087166A2014-05-12
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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