Title:
MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2019/087644
Kind Code:
A1
Abstract:
[Problem] To provide a motor control device and a motor control method enabling torque control by a command value even during switching of control modes, suppressing torque variation during the switching, and excellent in responsiveness.
[Solution] A motor control device 100 and a motor control method according to the present invention wherein, when switching from a sine wave control mode to a square wave control mode, the last voltage phase θv during the sine wave control mode is output to a voltage phase setting unit 502 as an initial voltage phase θv1, and a transition voltage command value |Va'| is continuously increased from the last voltage command value |Va| during the sine wave control mode to a square wave formation voltage value |Va1| while performing torque control by the voltage phase θv. This allows generated drive signals Su, Sv, Sw to have the continuity during switching maintained, enabling to smoothly switch the control modes with little torque variation.
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Inventors:
FUKUDA KENJI (JP)
TAKADA HIROMU (JP)
TAKADA HIROMU (JP)
Application Number:
PCT/JP2018/036636
Publication Date:
May 09, 2019
Filing Date:
October 01, 2018
Export Citation:
Assignee:
SAWAFUJI ELECTRIC CO LTD (JP)
International Classes:
H02P21/05; H02M7/48; H02P21/22; H02P27/08
Foreign References:
| JP2000050686A | 2000-02-18 | |||
| JP2014082865A | 2014-05-08 | |||
| JP2011115033A | 2011-06-09 |
Attorney, Agent or Firm:
HATORI Wataru et al. (JP)
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