Modular stator structural low-speed DC brushless motor

Abstract

This invention discloses a low speed DC brushless motor of a module stator structure, which divides the internal circle of a stator core into k1 fan zone sets uniformly, in which, three phases of A, B and C in each set share it to three zones in same area, k2 big teeth are set on the core of each zone uniformly, the tooth distance of the adjacent teeth is a pole one, a small groove is set on the core between two adjacent zones and a small tooth is set between two small grooves, full-pitched centralized coils are winded around each bug tooth, many pole numbers can be set to the invented motor, the ends of the stator winding are short and not laminated to each other, the factor of which is 1 and the winding process is simply.

Description

technical field [0001] The invention relates to a low-speed DC brushless motor, in particular to a low-speed DC brushless motor with a modular stator structure. Background technique [0002] Low-speed DC brushless motors should be able to output high torque at low speeds and run stably. This requires a large number of pole pairs of the motor, and at the same time, a flat structure is selected to enable the motor to generate larger torque and lower speed under a certain armature volume and armature voltage. The ends of the DC brushless motor windings with the traditional stator structure overlap each other and the ends are longer. At the same time, in order to reduce the permeance torque of the permanent magnet teeth, the stator slots are usually inclined by one stator tooth pitch, and the basic electromagnetic torque that the motor can output is reduced. Reduced motor efficiency. However, although the stator of the general modular permanent magnet synchronous motor does no...

AI Technical Summary

Problems solved by technology

The ends of the DC brushless motor windings with the traditional stator structure overlap each other and the ends are longer. At the same time, in order to reduce the permeance torque of the permanent magnet teeth, the stator slots are usually inclined by one stator tooth pitch, and the basic electromagnetic torque that the motor can output is reduced. Reduced motor efficiency

However, although the stator of a general modular permanent magnet synchronous motor does not use inclined slots, but uses fractional slots, the ends of the windings do not overlap each other, and the ends are relatively short, but the stator winding coefficient is relatively small, which affects the power index and efficiency of the motor.

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