48 Slot 4 Pole Winding

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Single-layer short isometric winding of 48-slot 4-pole three-phase asynchronous motor

To the number of winding slots per generator pole. In Figure 2 (top half), which shows a 4 pole machine with 48 total slots, there will be 12 slots per pole, and since the coils span 10 slots, the alternator slot-to-coil ratio is 10/12, or “5/6 pitch.” In the lower half of the illustration we see an alternator winding that spans 8 slots, so.

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CN102983653A
CN102983653ACN201210439687XACN201210439687ACN102983653ACN 102983653 ACN102983653 ACN 102983653ACN 201210439687X ACN201210439687X ACN 201210439687XACN 201210439687 ACN201210439687 ACN 201210439687ACN 102983653 ACN102983653 ACN 102983653A
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朱运龙
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Abstract

The invention relates to a single-layer short isometric winding of a 48-slot 4-pole three-phase asynchronous motor, belongs to the field of the structural design of motors, and aims at providing the single-layer short isometric winding which is capable of improving motor efficiency and saving wires, and is convenient to wind and simple in embedding the wires. All the pitches, shapes and sizes of coils in the single-layer short isometric winding of the 48-slot 4-pole three-phase asynchronous motor are the same. The pitches of the coils are 9, and the wires are embedded on the single-layer short isometric winding in an overlapping method, and the single-layer short isometric winding is connected in a salient pole connection method and is suitable for manufacturing and maintenance of the three-phase asynchronous motor provided with a stator which is provided with 48 slots and 4 poles. According to the single-layer short isometric winding of the 48-slot 4-pole three-phase asynchronous motor, the length of the end portion of the winding is shortened through changing of the pitches of the coils so as to shorten the total length of the coils and reduce stator resistance, and consequently copper consumption of the stator is reduced. Meanwhile, fifth subharmonics and seventh subharmonics severely affected in a magnetic field of the motor are significantly reduced, the phenomena of magnetic leakage are reduced, and consequently stray losses are lessened. Moreover, efficiency and performance of the motor are effectively improved, and compared with an existing single-layer winding, the wires are saved by about 15% and production efficiency is improved by 30%.

Description

Translated from Chinese

48槽4极三相异步电动机单层短等距绕组 4-pole 48-slot three-phase asynchronous motor winding single short equidistantly

技术领域 FIELD

[0001] 本发明属于电动机结构设计领域，主要涉及三相异步电动机，尤其是48槽4极三相异步电动机的绕组。 [0001] The present invention belongs to the field of motor design, mainly related to phase asynchronous motor, in particular a 4-pole 48-slot winding phase asynchronous motor.

背景技术 Background technique

[0002] 据介绍，电动机作为一种通用工业设备，每年消耗了我国近60%的电力资源。 [0002] According to reports, the electric motor as a common industrial equipment, annual consumption of nearly 60% of the electricity resources in China.随着人们节能和环保意识的增强，世界各国相继出台了能效标准，我国也于2012年9月I日强制实施了GB18613— 2012《中小型三相异步电动机能效限定值及能效等级》标准，所以开发研制高效电动机是社会发展的必然趋势，也是企业参与市场竞争的需要。 As people's awareness of energy conservation and environmental protection, all over the world have introduced energy efficiency standards, China is also in September 2012, I date to enforce the GB18613- 2012 'for small and medium three-phase asynchronous motor energy efficiency limit value and energy efficiency rating' standard, develop efficient motor is the inevitable trend of social development, but also the need for enterprises to participate in market competition.三相异步电动机在各个领域均有广泛的应用，绕组则是电动机的心脏，直接关系到电动机的效率。 Phase asynchronous motor in various fields are widely used, it is the heart of the motor winding is directly related to the efficiency of the motor.电动机在运行过程中，定子铜耗约占总损耗的40 %，主要为满载时定子绕组在运行温度下的电阻损耗；杂散损耗约占总损耗的10%，包括磁场中影响最严重的5、7次谐波，这些损耗与绕组形式、节距、绕组端部等因素有关。 During operation of the motor, the stator copper loss accounts for about 40% of the total loss, primarily when fully loaded at the stator winding resistance loss at operating temperature; stray loss of the total loss of 10%, including a magnetic field affecting the worst 5 factors seventh harmonic, which form the winding losses, pitch, and other relevant winding ends.要提高电动机的效率，就要降低各种损耗；而如何降低定子铜耗与杂散损耗，则对提高电动机的效率非常关键。 To improve the efficiency of the motor, it is necessary to reduce various losses; and how to reduce the stray loss and copper loss of the stator, the improvement of the motor efficiency is critical.降低定子铜耗就要降低定子绕组电阻；降低杂散损耗就要缩短绕组端部；故降低定子绕组电阻和缩短绕组端部必须采用短等距绕组来实现。 The stator copper losses will decrease to reduce the stator winding resistance; reduce stray losses will be shortened coil end; it is reduced to shorten the stator winding resistance and the winding ends must be achieved with short equidistant winding.现有48槽4极三相异步电动机的单层定子绕组型式中有单层叠式和单层同心式，而这两种绕组型式已很难降低定子铜耗与杂散损耗。 Single stator winding groove pattern 48 existing 4-pole three-phase asynchronous motors in a single monolayer stacked and concentric, both of the stator winding pattern has been difficult to reduce copper losses and stray losses.

发明内容 SUMMARY

[0003] 本发明的目的是要提供一种能够提高电动机效率、且节省线材、绕制方便、嵌线简单的单层段等距绕组。 [0003] The object of the present invention is to provide an electric motor capable of improving efficiency and saving wire, wound easy, simple single embedding equidistant winding segment.本发明适用于定子是48槽4极三相异步电动机的制造与维修。 The present invention is applicable to the stator slot 48 manufacturing and maintenance of the 4-pole three-phase asynchronous motor.

[0004] 本发明所述的电动机绕组是通过改变线圈节距来缩短绕组端部长度，使线圈总长度缩短，定子电阻减小，从而降低了定子铜耗；同时大幅削减了电动机磁场中影响最严重的 [0004] The windings of the motor of the present invention is to be shortened by changing the pitch of the coil winding end portion length, shortening the total length of the coil, the stator resistance is reduced, thereby reducing the copper loss of the stator; at the same time slashed motor magnetic field affecting the most serious

5、7次谐波，并减少了漏磁，从而降低杂散损耗；有效的提高了电动机的效率与性能。 5,7 harmonics, and reducing the magnetic flux leakage, thereby reducing stray loss; effectively improve the efficiency and performance of the motor.

[0005] 本发明所述的48槽4极三相异步电动机单层短等距绕组共12组线圈，每组线圈由两个线圈组成；所有线圈的节距、形状和尺寸均相同，线圈节距为9;并采用交叠法嵌线和显极接法联接，嵌线时吊4边；嵌线规律是：嵌入I槽，退空I槽；再嵌I槽，再退空I槽，如此类推；其交叠法嵌线顺序见下表： [0005] 4-pole 48-slot three-phase asynchronous motors equidistant single short winding 12 of the present invention were set of coils, each coil consists of two coils; pitch, shape and size of the coils are all the same, the coil section distance of 9; and embedding method using overlapping salient poles and coupled connection, when the four sides of the hanging molding; embedding rule is: I embedding groove, I withdraw the empty slots; then I insert groove, I then passed empty slots, and so on; embedding method which overlaps the sequence in the table below:

[0006] [0006]

[0007] 本发明的有益效果是：当采用本发明电动机绕组时，降低了电动机的定子铜耗与杂散损耗，有效的提高了电动机的效率与性能；同时比现有的单层绕组型式节省线材约15%、提高生产效率约30%。 [0007] Advantageous effects of the present invention is that: when using the present invention, the motor windings, the motor stator to reduce the stray loss and copper loss, to effectively improve the efficiency and performance of the motor; while saving than the conventional single-layer winding pattern wire about 15%, about 30% increase productivity.

附图说明 BRIEF DESCRIPTION

[0008] 图1为定子是48槽的4极三相异步电动机单层短等距绕组的布线展开图，图中的阿拉伯数字1-48为电动机的定子槽数，Al、A2、A3、A4、A5、A6、A7、A8为A相绕组的8个线圈;B1、B2、B3、B4、B5、B6、B7、B8 为B 相绕组的8 个线圈；C1、C2、C3、C4、C5、C6、C7、C8 为C相绕组的8个线圈。 [0008] FIG. 1 is a 4-pole motor the stator is a wiring short single-phase asynchronous equidistant winding groove 48 a developed view, FIG. 1-48 digit number of the motor stator slots, Al, A2, A3, A4 , A5, A6, A7, A8 of a-phase windings 8 of the coil; B1, B2, B3, B4, B5, B6, B7, B8 is a B-phase winding eight coils; C1, C2, C3, C4, C5 , C6, C7, C8 to eight C-phase winding coils.

具体实施方式 Detailed ways

[0009] 下面结合图1将本发明的实施细节说明如下： [0009] Embodiment 1 will be described in detail below in connection with the present invention is as follows:

[0010] 如图1所示48槽4极三相异步电动机单层短等距绕组共12组线圈，每组线圈由两个线圈组成，线圈节距为9，各相绕组线圈的嵌放结构为：A1嵌I、10槽，A2嵌3、12槽，A3嵌13,22 槽，A4 嵌15,24 槽，A5 嵌25,34 槽，A6 嵌27,36 槽，A7 嵌37,46 槽，A8 嵌39,48 槽；BI 嵌5、14 槽，B2 嵌7、16 槽，B3 嵌17、26 槽，B4 嵌19,28 槽，B5 嵌29、38 槽，B6 嵌31、40槽，B7 嵌41、2 槽，B8 嵌43、4 槽；C1 嵌9、18 槽，C2 嵌11、20 槽，C3 嵌21、30 槽，C4 嵌23、32 槽，C5 嵌33,42 槽，C6 嵌35,44 槽，Cl 嵌45、6 槽，C8 嵌47、8 槽。 [0010] FIG 4 single pole three-phase asynchronous motor winding short equidistant grooves 48 1 of 12 sets of coils, each coil consists of two coils, the coil pitch is 9, the structure of each phase winding Embedding coil is: A1 insert I, 10 grooves, A2 embedded grooves 3,12, A3 embedded grooves 13, 22, A4 embedded grooves 15, 24, A5 embedded grooves 25 and 34, A6 embedded grooves 27, 36, A7 embedded grooves 37,46 , A8 embedded grooves 39, 48; 5, 14 slot insert the BI, B2 embedded grooves 7,16, B3 embedded grooves 17, 26, B4 fitted grooves 19 and 28, B5 embedded grooves 29, 38, B6 embedded grooves 31, 40, 41,2 B7 embedded grooves, B8 43,4 insert groove; a C1 embedded grooves 9,18, C2 embedded grooves 11, 20, C3 21, 30 embedded in the groove, C4 embedded grooves 23, 32, C5 embedded grooves 33, 42, C6 35, 44 embedded in the groove, Cl 45,6 embedded grooves, C8 47,8 groove inlay.

Claims (2)

Translated from Chinese
1. 48槽4极三相异步电动机单层短等距绕组，其特征是：所述的电动机绕组型式为单层短等距绕组，适用于定子是48槽的4极三相异步电动机，各绕组中所有线圈的节距、形状和尺寸均相同，线圈节距为9。 1.48 grooves 4 single pole three-phase asynchronous motor winding short equidistant, characterized in that: said motor winding is a single layer type short equidistant winding 4 is applied to the stator pole three-phase asynchronous motor of the grooves 48, each of winding pitch, shape and size of the coils are all the same, the coil pitch of 9.
2.根据权利要求I所述的48槽4极三相异步电动机单层短等距绕组，其特征是：各相绕组线圈的嵌放结构为：A1嵌1、10槽，A2嵌3、12槽，A3嵌13、22槽，A4嵌15、24槽，A5嵌25,34 槽，A6 嵌27,36 槽，A7 嵌37,46 槽，A8 嵌39,48 槽；B1 嵌5,14 槽，B2 嵌7、16 槽，B3嵌17,26 槽，B4 嵌19,28 槽，B5 嵌29,38 槽，B6 嵌31,40 槽，B7 嵌41、2 槽，B8 嵌43、4 槽；Cl 嵌9、18 槽，C2 嵌11,20 槽，C3 嵌21,30 槽，C4 嵌23,32 槽，C5 嵌33,42 槽，C6 嵌35,44槽，C7嵌45、6槽，C8嵌47、8槽。 The 4-pole 48-slot three-phase asynchronous motor isometric single short winding according to claim I, wherein: Embedding structures for each phase winding coil: 1,10 embedded grooves A1, A2 embedded 3,12 grooves, A3 embedded grooves 13, 22, A4 embedded grooves 15, 24, A5 embedded grooves 25 and 34, A6 embedded grooves 27, 36, A7 embedded grooves 37,46, A8 fitted grooves 39, 48; 5, 14 Bl insert groove , B2 embedded grooves 7,16, B3 embedded grooves 17, 26, B4 fitted grooves 19 and 28, B5 embedded grooves 29, 38, B6 embedded grooves 31, 40, B7 41,2 embedded grooves, B8 43,4 insert groove; Cl 9,18 embedded grooves, C2 embedded grooves 11, 20, C3 21, 30 embedded in the groove, C4 embedded grooves 23, 32, C5 embedded grooves 33, 42, C6 embedded grooves 35, 44, C7 embedded 45,6 groove, C8 embedded 47,8 slot.
CN201210439687XA2012-11-072012-11-07Single-layer short isometric winding of 48-slot 4-pole three-phase asynchronous motor CN102983653A (en)

48 Slot 4 Pole Winding Diagram

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CN104617699A (en) *2014-12-232015-05-13南昌康富电机技术有限公司200 kW lightweight generator
CN105515249A (en) *2016-01-192016-04-20浙江金龙电机股份有限公司Pole-changing control three-phase asynchronous motor

Citations (2)

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Publication numberPriority datePublication dateAssigneeTitle
CN102723798A (en) *2012-02-202012-10-10朱运龙Single-layer short isometric winding of two-pole three-phase asynchronous motor
  • 2012-11-07CNCN201210439687XApatent/CN102983653A/ennot_activeApplication Discontinuation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
CN102723798A (en) *2012-02-202012-10-10朱运龙Single-layer short isometric winding of two-pole three-phase asynchronous motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
CN105515232A (en) *2016-01-192016-04-20浙江金龙电机股份有限公司Motor stator
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CN202424345U (en) Permanent magnet motor with mixed magnetic poles
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For example if we look at the pole phase groups moving around the circumference for a 4-pole motor, 60hz motor (1800rpm) we might have something like:
A, B', C, A', B, C' A, B', C, A', B, C'
Now to get to slow speed (900rpm), something strange is required. The poles in the slow speed diagram are arranged as follows:
A B C A B C A B C A B C
It makes perfect sense to me that this slow speed arrangement yields 900rpm = half the speed of the high speed connection, but not for the reasons stated in the quote above.
I don't understand the need for any 'induced poles' to accomplish this... in my mind it is simply a re-definition of what constitutes a pole (or more specifically the time interval between poles). There is no need for another pole between ppg A and ppg B to provide return path for flux, because A and B have different phase. And their discussion of induced pole implies a return path involving through the frame involving homopolar flux ('The core and frame must be made from a special high permiability steel to provide the flux path for these virtual poles') – I don't see the need for that: the fluxes from A+B+C sum to 0 in the same way that the fluxes from A+B'+C+A'+B+C' sum to 0. If one were of the opinion that the flux from A must return through A', then one would conclude that an induced pole is necessary. However imo there is no reason the flux from A cannot return thru B and C.
To my way of thinking: Slot
#1 - the high-speed (typical) pattern A, B', C, A', B, C' A, B', C, A', B, C' has 60 electrical degrees between pole phase groups. So for the field to go once around the stator = 12 pole phase groups will require 12*60 degrees = 720 degrees = 2 cycles = (2/60) sec = (1/30) sec => 1800rpm.
#2 - the low-speed pattern A, B, C, A, B, C A, B, C, A, B, C has 120 electrical degrees between pole phase groups. So for the field to go once around the stator = 12 pole phase groups will require 12*120 degrees = 1440 degrees = 4 cycles = (4/60) sec = (1/15) sec => 900rpm.
What is your opinion? Did we add 4 more poles to the 4-pole motor in converting from fast to slow as they suggest above? Or did we simply move the existing 4 poles farther apart in time as described above #1, #2?
Is there a homopolar flux path required for a consequent pole motor as they suggest? Or not (as per my analysis).
Also I can see that overlap between phases would significantly degrade the winding factors in the slow speed application unless coil span were adjusted. Is coil span typically a smaller fraction of pole span for consequent pole motors than others?


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