Brushless DC motor with SFOC regulation

摘要

The method involves determining target voltages for three phases using rotational position of a rotor of direct current (DC) motor. A setting device is controlled according to the determination result, such that each phase is connected to a supply voltage line corresponding to the respective reference voltage within a respective clock cycle (T). The divisional switching periods (T1'-T3',T1''-T3'') for each phase are determined such that current detection for each phase is enabled within fixed time intervals (Z1',Z2',Z1'',Z2'') of sub-cycles (T',T''). Independent claims are included for the following: (1) control device for brushless DC motor; and (2) brushless DC motor.