motor stator, motor

Abstract

The invention provides a motor stator and a motor, wherein the motor stator includes a stator core, N stator slots are constructed on the stator core, the number of pole pairs of the motor rotor is p, and the N stator slots are sequentially divided along the first direction There are 6p stator slot groups, and each stator slot group includes q stator slots arranged in sequence along the first direction, and the unilateral coils on the same side of the sinusoidal winding of the q group adopting the overlapping winding method are respectively embedded one-to-one. Installed in q stator slots in each stator slot group, q=N / 6p, the slot area of ​​q stator slots in each stator slot group decreases from the central stator slot to the stator slots on both sides, and q The stator slot with the largest area among the four stator slots corresponds to the coil with the largest number of coil turns in the q groups of sinusoidal windings, wherein the first direction is the circumferential direction of the stator core, and q≥3. According to the present invention, the slot area of ​​each stator slot in the same stator slot group is matched with the number of embedded coil turns of the lap winding, so as to ensure slot fullness and improve material utilization.

Description

technical field [0001] The invention belongs to the technical field of motor manufacturing, and in particular relates to a motor stator and a motor. Background technique [0002] With the advancement of science and technology and the improvement of people's living standards, the requirements of various equipment for motor noise are becoming more and more stringent. The noise limits in the standards of various countries have been tightened year by year. In addition to the application of some household appliances such as air conditioners and fans, people have also put forward higher requirements for the noise of industrial motors. [0003] The control of motor noise can be achieved by reducing harmonics and weakening torque ripple. In the prior art, the use of sinusoidal windings can effectively reduce the odd harmonics of the motor and improve the sine degree of the back EMF. However, in the prior art, the sinusoidal winding The matching stator slots are consistent in slot s...

AI Technical Summary

Problems solved by technology

[0003] The control of motor noise can be achieved by reducing harmonics and weakening torque ripple. In the prior art, the use of sinusoidal windings can effectively reduce the odd-order harmonics of the motor and improve the sine degree of the back EMF. However, in the prior art, the sinusoidal winding The matching stator slots are consistent in slot size, which is not well matched with the sinusoidal windings using concentric winding or stacked winding in different turns, resulting in the slot fullness of the stator slots being mostly too low , low material utilization

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