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US 2022/0190769 A1Published application
Apparatus for controlling motor and method for controlling motor
AssigneeLG Electronics Inc.
InventorsKwang Sik KIM, Ha Min Song, Ki Wook Lee
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Abstract
Disclosed is a motor control apparatus, a motor control system, and a motor control method that estimate a stator resistance and a rotor position for sensorless control of a motor.
Claims20
A motor control apparatus comprising:
- an inverter configured to convert direct current (DC) power into alternating current (AC) power, and to output the AC power to a motor;
- and
- a controller configured to control the inverter in relation to driving the motor,
- wherein the controller is configured to:
- control the inverter such that an input voltage having a specific pattern is applied to the motor, in response to a start-up of the driving of the motor, and
- control the driving of the motor based on an estimated resistance of a stator of the motor and an estimated position of a rotor of the motor, wherein the estimated resistance is based on a response current corresponding to the input voltage, and the estimated position is based on a maximum point of the response current.
3 more elements
A motor control method of a motor control apparatus that includes an inverter configured to output AC power to a motor, and a controller configured to control the inverter in relation to driving the motor, the motor control method comprising:
- controlling the inverter such that an input voltage having a specific pattern is applied to the motor, in response to a start-up of the driving of the motor;
- and
- controlling the driving of the motor based on an estimated resistance of a stator of the motor and an estimated position of the rotor of the motor, wherein the estimated resistance is based on a response current corresponding to the input voltage, and the estimated position is based on a maximum point of the response current.
Dependencies are inferred from the claim text.