Title:
MOTOR CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2021065074
Kind Code:
A
Abstract:
To provide a motor control device capable of stopping the rotation of a rotor in the shortest possible time without demagnetizing a rotor magnet.SOLUTION: When a rotor stop request is input while a rotor of a three-phase brushless DC motor is rotating (S1; YES), a first control is executed to turn off all FETs first as rotor stop control (S2), subsequently, a second control is executed to PWM-control three FETs (S4), and lastly, a third control is executed to turn on the three FETs continuously (S5).SELECTED DRAWING: Figure 2
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Inventors:
ZAMA KENTARO
Application Number:
JP2019190212A
Publication Date:
April 22, 2021
Filing Date:
October 17, 2019
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02P3/22; H02M7/48; H02P6/24
Domestic Patent References:
| JPH11128587A | 1999-05-18 | |||
| JP2015211502A | 2015-11-24 |
Attorney, Agent or Firm:
Patent Business Corporation Sato International Patent Office