Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/053600
Kind Code:
A1
Abstract:
The one aspect of the motor control device according to the present invention controls a n-phase motor (where n is an integer greater than or equal to 3) and comprises: a power conversion circuit which is connected to the n-phase motor and which performs mutual conversion between DC power and n-phase AC power; and a control unit which controls the power conversion circuit on the basis of an n-phase duty-cycle command value updated at a predetermined update cycle. When the control unit predicts, on the basis of the n-phase duty-cycle command value, that voltage fluctuations of connection terminals in at least two phases of connection terminals in n phases connected to the n-phase motor occur in the same direction at the same timing, the control unit delays the occurrence timing of the voltage fluctuation of one connection terminal of the connection terminals in the two phases by a first time and advances the occurrence timing of the voltage fluctuation of the other connection terminal by a second time. The total value of the first time and the second time is such a predetermined time period that overlap does not occur to timings of the voltage fluctuations of predetermined connection terminals in two phases.
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Inventors:
KATAOKA KOTARO (JP)
FUKUMURA TOMOHIRO (JP)
FUKUMURA TOMOHIRO (JP)
Application Number:
PCT/JP2022/024253
Publication Date:
April 06, 2023
Filing Date:
June 17, 2022
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02M7/48
Domestic Patent References:
| WO2005081389A1 | 2005-09-01 |
Foreign References:
| JP2002204579A | 2002-07-19 | |||
| JP2014033503A | 2014-02-20 | |||
| JP2005051959A | 2005-02-24 | |||
| JP2008125178A | 2008-05-29 | |||
| JP2020072607A | 2020-05-07 |
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