Motor driver and system

摘要

A controller (10) for a motor (12) is provided. The motor (12) includes N redundant M-phase rotor/stator combinations (16) (where N and M are both integers greater than 1). The controller (10) includes N driver circuits (5) each having M outputs. Each of the M outputs of a respective one of the N driver circuits provides pulse-width modulated (PWM) current pulses to a corresponding phase winding in a respective one of the redundant M-phase rotor/stator combinations (16). Furthermore, the controller (10) includes a control unit (6) operatively coupled to the N driver circuits (5) for providing phase spacing between the N driver circuits (15). As a result, current pulses provided by the N driver circuits (5) to a same phase winding in each of the redundant M-phase rotor/stator combinations (16) are offset in phase.