Motor stator and motor

A technology of motor stator and motor rotor, applied in the field of motor and motor stator, can solve the problems of low full rate of stator slots, low material utilization rate, weakening torque ripple, etc.

Active Publication Date: 2021-05-14
GREE ELECTRIC APPLIANCES INC +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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 sin

Method used

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Embodiment Construction

[0029] see in conjunction Figure 1 to Figure 11As shown, according to an embodiment of the present invention, a motor stator is provided, including a stator core 1, and N stator slots 11 are constructed on the stator core 1, and the pole pairs of the motor rotor matched with the motor stator The number is p, and the N stator slots 11 are sequentially divided into 6p stator slot groups along the first direction, and each stator slot group includes q stator slots 11 sequentially arranged along the first direction, q groups The unilateral coils on the same side of the sinusoidal winding (not shown in the figure) using the lap winding method are respectively embedded in the q stator slots 11 in each stator slot group, q=N / 6p, the slot area of ​​the q stator slots 11 in each stator slot group decreases from the central stator slot 11 to the stator slots 11 on both sides, and the stator slot 11 with the largest area among the q stator slots 11 corresponds to the q group The coil ...

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Abstract

The invention provides a motor stator and a motor. The motor stator comprises a stator core, N stator slots are constructed on the stator core, the number of pole pairs of a motor rotor is p, the N stator slots are sequentially divided into 6p stator slot groups along a first direction, each stator slot group comprises q stator slots which are sequentially arranged along the first direction, single-side coils on the same side of q groups of sine windings adopting a lap winding type winding mode are respectively embedded in the q stator slots in each stator slot group in a one-to-one correspondence manner, q = N/6p, the slot areas of the q stator slots in each stator slot group are gradually reduced from the stator slot in the center to the stator slots on the two sides, the stator slot with the largest area in the q stator slots corresponds to the coil with the largest number of turns in the q groups of sine windings, the first direction is the circumferential direction of the stator core, and q is larger than or equal to 3. According to the invention, the slot area of each stator slot in the same stator slot group is matched with the number of turns of the embedded coil of the lap winding, the slot fullness rate is ensured, and the material utilization rate is improved.

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...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K3/16
CPCH02K1/16H02K3/16H02K2213/03
Inventor 廖克亮陈彬童童胡绳杨福源
Owner GREE ELECTRIC APPLIANCES INC
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