The invention relates to a motor controlling device, a motor control method, and an electric power steering device, preventing the erroneous decision of the abnormal condition at the time of regenerative operation by setting up largely the abnormality judgement threshold value at the time of the regenerative operation of a motor rather than the abnormality judgement threshold value at the time of power running. An abnormality determining part (10k), while calculating the current detecting value for abnormality judgement which added the code information of the energizing direction detection value input from an energizing direction primary detecting element (10j) to the power running current detecting value input from a power running current detecting element (10i), When a difference with the motor electric current command value input from the current detecting value for abnormality judgement and a current command value calculating part (10a) is more than a predetermined decision threshold, it judges with the abnormal condition of a direct-current motor (1) or a motor driving section (20), and an abnormality judgement signal is generated.
Motor controlling device, motor control method, and electric power steering device