METHOD FOR DETECTING PHASE CURRENT OF MOTOR

摘要

PURPOSE: A method is provided to achieve improved accuracy of detection of phase current by compensating for errors of phase current detection. CONSTITUTION: A method comprises a step(S301) of turning off a motor and resetting a processor; a step(S302) of reading phase current values by N-number of times, converting the read value into a digital value, and summing the phase current values; a step(S303) of calculating a compensating value by dividing the sum phase current value by N, and storing the obtained value; a step(S304) of operating a motor; a step(S305) of reading phase current values at predetermined intervals; and a step(S306) of converting the read phase current value into a digital value, and obtaining the final phase current value by subtracting the compensating value from the converted digital value.