METHOD AND DEVICE FOR OPERATING A BRUSHLESS DC MOTOR

摘要

The invention relates to a method for operating a three-phase brushless DC motor (2) with a pulse-width modulation controlled electronic commutation in the event of a malfunction. A maximum number (n) of commutation steps, a direction of motor rotation and at least two possible operating end states are specified in said method, and one of the operating end states is chosen. Following indication of a malfunction, the rotor of the brushless DC motor (2) is rotated at the specified maximum number (n) of commutation steps in the specified direction of motor rotation and the brushless DC motor (2) is then set to the operating end state selected.