Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/043244
Kind Code:
A1
Abstract:
This motor control device comprises: a control unit that executes sensorless control on a brushless motor BM having three phases; and a determination unit that determines the presence or absence of stepping-out of the brushless motor. The control unit executes sensorless control on the basis of an estimated d-axis output current Ids, an estimated q-axis output current Iqs, an estimated d-axis instruction voltage Vdc, an estimated q-axis instruction voltage Vqc, and an estimated rotation speed ωs. The determination unit calculates a determination voltage Vqj on the basis of the estimated d-axis output current Ids, the estimated q-axis output current Iqs, and the estimated rotation speed ωs. When voltage deviation hV, which is the difference between the determination voltage Vqj and the estimated q-axis instruction voltage Vqc, exceeds a determination threshold value Hs, stepping-out is determined to have occurred. For example, the determination unit decides the determination threshold value Hs to be larger as the estimated rotation speed ωs increases.
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Inventors:
KAWAMURA HIKARU (JP)
Application Number:
PCT/JP2023/030214
Publication Date:
February 29, 2024
Filing Date:
August 22, 2023
Export Citation:
Assignee:
ADVICS CO LTD (JP)
International Classes:
H02P6/12; H02P6/18
Domestic Patent References:
| WO2015097734A1 | 2015-07-02 |
Foreign References:
| JP2018143035A | 2018-09-13 | |||
| JP2006149122A | 2006-06-08 | |||
| JP2022117302A | 2022-08-10 |
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