Stator assembly and motor, compressor and refrigeration equipment having same

A component and stator technology, applied in the field of compressors, can solve the problems of small magnetic flux harmonics, multi-slot area of ​​the main winding, large magnetic flux harmonics, etc., to reduce stray losses, balance heating losses, and magnetic flux harmonics. reduced effect

Active Publication Date: 2020-05-01
GUANGDONG MEIZHI COMPRESSOR +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The number of poles of the motor in the related art is 2 poles. In order to obtain better starting and running performance of the motor, the main winding and the auxiliary winding of each pole usually adopt a multi-layer concentric winding method, showing that the main winding is strong and the auxiliary winding is weak. "The design idea, on the one hand, the number of winding layers of one pole of the main winding is greater than the number of winding layers of one pole of the auxiliary winding, so that the magnetic flux harmonics generated on the main winding are small, and the magnetic flux harmonics generated on the auxiliary winding are large. As a result, the flux harmonics on the secondary windings produce higher stray losses; on the other hand, since the main windings occupy more slot area, the heat loss on the main / secondary windings is unbalanced, which seriously affects the performance of the motor

Method used

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  • Stator assembly and motor, compressor and refrigeration equipment having same
  • Stator assembly and motor, compressor and refrigeration equipment having same
  • Stator assembly and motor, compressor and refrigeration equipment having same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 As shown, in this embodiment, the stator assembly 100 includes a stator iron and a stator winding 20. Specifically, the stator core 10 has 20 stator teeth 12 spaced apart along its circumferential direction, and two adjacent stator teeth 12 define a stator slot (such as figure 1 As shown in S1-S20), the stator winding 20 includes a main winding 21 and a secondary winding 22. The multiple coils of the main winding 21 and the secondary winding 22 are respectively wound in the stator slot in a concentric winding manner, and the main winding 21 and the secondary winding The windings 22 are distributed orthogonally on the stator core 10. In the same pole of the main winding 21, the number of stator slots occupied by the effective sides of multiple coils on the same side is km, and the effective sides of the multiple coils on the same side are in the same pole. The sum of the cross-sectional area of ​​the windings in the stator slots is Sm. In the same pole of ...

Embodiment 2

[0058] Such as figure 2 As shown, in this embodiment, the number of stator slots of the stator assembly 100 is 20, km is 5, and ka is 4. In the same pole of the main winding 21, the number of stator slots occupied by the effective sides of the multiple coils on the same side is 5. In the same pole of the secondary winding 22, the stator slots occupied by the effective sides of the multiple coils The number of slots ka is 4, and the stator winding 20 of the stator assembly 100 has a "5 / 4" distribution, that is, the number of layers km of one pole of the main winding 21 is 5 layers, and the number of layers ka of one pole of the secondary winding 22 is 4th floor.

[0059] By changing the “4 / 3” distribution of the stator windings in the related art to the “5 / 4” distribution of the stator windings 20, the effective sides of the multiple coils of the main winding 21 are simultaneously controlled to be wound in the stator slots. The ratio of the sum of wire cross-sectional area Sm to...

Embodiment 3

[0061] Such as image 3 As shown, in this embodiment, the number of stator slots of the stator winding 20 is 20, and km=ka=5. In the same pole of the main winding 21, the number of stator slots occupied by the effective sides of the multiple coils on the same side is 5. In the same pole of the secondary winding 22, the stator slots occupied by the effective sides of the multiple coils The number of slots ka is 5, and the stator winding 20 of the stator assembly 100 has a "5 / 5" distribution, that is, the number of layers km of one pole of the main winding 21 is 5 layers, and the number of layers ka of one pole of the secondary winding 22 is Layer 5, by changing the stator windings distributed in "4 / 3" in the related technology to the stator windings 20 distributed in "5 / 5", and at the same time control the effective sides of the multiple coils of the main winding 21 to be in the stator slot The ratio of the sum of the cross-sectional area of ​​the inner winding Sm to the cross-s...

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Abstract

The invention discloses a stator assembly and a motor equipped with same, a compressor, and refrigeration equipment. The stator assembly comprises a stator iron core, and a stator winding, wherein the stator iron core is equipped with multiple stator grooves; the number of the stator grooves is Q which is multiple of 4; the stator winding comprises a main winding and a secondary winding; in the same pole of the main winding, the number of the stator grooves in the same-side effective edge of each coil is km; the sum of the wire-winding sectional areas of the same-side effective edge of each coil is Sm; in the same pole of the secondary winding, the number of the stator grooves in the same-side effective edge of each coil is ka; the sum of the wire-winding sectional areas of the same-side effective edge of each coil is Sa; and ka is greater than or equal to (Q-4) / 4 and less than or equal to km that is less than or equal to Q / 4, wherein Sm / Sa is greater than or equal to 1.05 and less than or equal to 1.50. According to the stator assemble provided by the embodiment of the invention, the magnetic flux harmonic of the winding can be lowered, the stray loss of the motor can be lowered, the area proportion of the secondary winding in the stator grooves can be increased, the heat dissipation loss of the main winding and the secondary winding is balanced, and the performance of the motor is improved.

Description

Technical field [0001] The present invention relates to the technical field of compressors, and more specifically, to a stator assembly and a motor, a compressor and a refrigeration device having the stator assembly. Background technique [0002] The number of poles of the motor in the related technology is 2 poles. In order to obtain better starting and running performance of the motor, the main winding and the auxiliary winding of each pole usually adopt a multi-layer concentric winding method, which shows that "the main winding is strong and the auxiliary winding is weak. "The design idea, on the one hand, the number of winding layers of one pole of the main winding is greater than the number of winding layers of one pole of the secondary winding, so that the magnetic flux harmonics generated on the main winding are small, and the magnetic flux harmonics generated on the secondary windings are large. As a result, the magnetic flux harmonics on the secondary winding generate hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/16H02K3/12H02K3/04
CPCH02K1/16H02K3/04H02K3/12H02K2213/03
Inventor 张尊睦孙国伟于明湖
Owner GUANGDONG MEIZHI COMPRESSOR
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