Apparatus and method for compensating offset of current sensor
AssigneeLsis Co., Ltd.
InventorGi Young CHOI
Life of this patent
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Abstract
Provided is an apparatus for compensating offset of a current sensor detecting a motor current supplied by an inverter for PWM (Pulse Width Modulation) control of a motor, the apparatus including a current controller providing a PWM signal generated based on the motor current detected by the current sensor to the inverter, calculating an offset using the motor current detected by the current sensor in response to presence and absence of the PWM control of the motor, or offset-compensating the motor current detected by the current sensor.
Claims9
An apparatus for compensating offset of a current sensor detecting a motor current supplied by an inverter for PWM (Pulse Width Modulation) control of a motor, the apparatus comprising:
- a current controller providing a PWM signal generated based on the motor current detected by the current sensor to the inverter, calculating an offset using the motor current detected by the current sensor in response to presence and absence of the PWM control of the motor, or offset-compensating the motor current detected by the current sensor.
A method for compensating offset of a current sensor detecting a motor current supplied by an inverter for PWM (Pulse Width Modulation) control of a motor, the method comprising:
- determining whether a PWM control of the motor is performed;
- and performing an offset calculation or an offset compensation of the motor current detected by the current sensor as a result of the determination.
Dependencies are inferred from the claim text.