An outer rotor permanent magnet brushless motor and driver circuit

Abstract

The application provides an outer rotor permanent magnet brushless motor and a driver circuit, and adopts a concentrated winding mode in which two adjacent coils of the same phase are oppositely wound on the armature tooth of a disc-shaped inner stator, different phase windings are adjacently placed, which is completely different from a traditional concentrated winding mode in which two adjacent coils are identically wound and a winding mode in which the same phase winding has adjacently placed coils, and different stator electromagnetic fields are generated. A special driving mode is adopted so that three-phase windings are energized in each driving state, the utilization rate of winding coils reaches 100%, and the motor torque and power density are improved. The motor manufacturing process and cost are the same as those of a traditional outer rotor permanent magnet brushless motor of the same type, and the performance of the three-phase outer rotor permanent magnet brushless motor is greatly improved. The application has wide application prospects in new energy electric two-wheeled motorcycles and industrial applications.

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