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US 2024/0333178 A1Published application
Motor drive device
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorShunsuke SAWANO
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Abstract
A motor drive device includes a motor having a rotor, and a control device that controls the motor. The control device calculates a first value based on a d axis current and a q axis current of the motor. The control device calculates a second value by integrating the first value. The control device calculates a third value by performing prescribed control for making the second value equal to zero. The control device performs, based on the third value, position control for causing a rotational position of the rotor to match a designated position.
Claims9
A motor drive device comprising:
- a motor including a rotor, and a stator around which coils of three phases are wound;
- an inverter that drives the motor;
- and
- a control device that controls the inverter, wherein
- the control device
- performs coordinate transformation of a current flowing through the motor into a d axis current and a q axis current,
- calculates a correlation value by integrating a value based on the d axis current and the q axis current, the correlation value correlated with an amount of difference between a position of the rotor and a designated position, and
- performs, based on the correlation value, position control for causing a rotational position of the rotor to match the designated position.
5 more elements
Dependencies are inferred from the claim text.