CN103208874B - Stator winding configuration of three-phase electric motor - Google Patents
Stator winding configuration of three-phase electric motor Download PDFInfo
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- CN103208874B CN103208874B CN201310067954.XA CN201310067954A CN103208874B CN 103208874 B CN103208874 B CN 103208874B CN 201310067954 A CN201310067954 A CN 201310067954A CN 103208874 B CN103208874 B CN 103208874B
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Abstract
The invention discloses a stator winding configuration of a three-phase electric motor. The stator winding configuration comprises a three-phase coil and a plurality of coil slots, wherein the three-phase coil comprises a first phase coil body, a second phase coil body and a third phase coil body which are arranged inside the plurality of coil slots sequentially from outside to inside, the three-phase coil is composed of copper wires and aluminum wires, the copper wire and the aluminum wire in each phase coil body are in series connection, aluminum wires in two phase coil bodies are connected with the copper wire in the rest phase coil body, copper wires and aluminum wires in each phase coil body are provided with n units in coil slots respectively, n is a natural number lager than 1, copper wire units and aluminum wire units in each phase coil body are distributed inside the plurality of coil slots alternately, and only two phases of identical aluminum wires or copper wires are arranged in each of the coil slots for the three-phase coil. The stator winding configuration solves the problem that a winding of the electric motor is burnt due to the fact that heating is centralized at one position when the three-phase electric motor is connected with a large current.
Description
Technical field
The present invention relates to a kind of stator winding configuration of three phase electric machine.
Background technology
Coil in part motor winding is only made up of copper, if but the coil in motor winding is only made up of copper, due to the large proportion of copper cash, motor weight just becomes heavy, therefore in order to reduce the weight of motor, a part of copper coil of motor winding is changed to aluminum steel coil by a part of motor of present stage, copper cash and the configuration of aluminum steel deviation in the motor winding of nowadays three phase electric machine, as Fig. 1, shown in Fig. 2, multiple aluminum steel unit 9 and copper cash unit 10 is all had in each phase coil, aluminum steel unit 9 in each phase coil is all alternately distributed in online ring recess 11 with copper cash unit 10, the decentralized configuration and the aluminum steel unit 9 in three-phase coil staggers, cause the multiple aluminum steel unit 9 in three-phase coil overlapping in partial line ring recess 11, because aluminum steel in three-phase coil is larger than the resistance of copper cash, therefore the aluminum steel that resistance is large heating easier than copper cash, aluminum steel unit in overlapping three-phase coil makes the aluminum steel temperature of motor winding rise obviously, time three phase electric machine leads to big current, there is the defect that motor winding is burnt.
Summary of the invention
The object of the invention is to for above-mentioned the deficiencies in the prior art, provide a kind of stator winding of a kind of three phase electric machine that motor winding can be prevented to be burnt when temperature obviously rises when motor leads to big current to configure.
Technical scheme of the present invention is achieved in that a kind of stator winding configuration of three phase electric machine, it comprises three-phase coil, multiple coil groove, described three-phase coil comprises first-phase coil, second-phase coil, third phase coil, described first-phase coil, second-phase coil, third phase coil is successively set in multiple coil groove from outside to inside, described three-phase coil is formed by copper cash and aluminum steel, copper cash in coil described in each phase is connected with aluminum steel, aluminum steel wherein in two phase coils is connected with the copper cash in all the other phase coils, copper cash in coil described in each phase, unit in the online ring recess of aluminum steel is respectively arranged with n, wherein, n is the natural number of >1, copper cash unit in each phase coil, aluminum steel units alternately is distributed in multiple coil groove, described three-phase coil only has the aluminum steel or copper cash that two-phase is identical in each coil groove.
Preferably, often the resistance of mutually described coil is all equal.
Preferably, n aluminum steel unit one_to_one corresponding and overlapping successively respectively in n aluminum steel unit, third phase coil in n aluminum steel unit, second-phase coil in described first-phase coil, in described first-phase coil, in n aluminum steel unit, third phase coil, n aluminum steel unit is arranged in the two ends of second-phase coil n aluminum steel unit respectively.
Preferably, in described first-phase coil in n aluminum steel unit, second-phase coil in n aluminum steel unit, third phase coil n aluminum steel unit overlapping successively with clockwise direction respectively.
Preferably, in described first-phase coil in n aluminum steel unit, second-phase coil in n aluminum steel unit, third phase coil n aluminum steel unit overlapping successively with counterclockwise direction respectively.
Preferably, the overlap length of n aluminum steel unit in described first-phase coil and n aluminum steel unit in second-phase coil is less than 1/2 of n aluminum steel element length in second-phase coil respectively, and n aluminum steel cells overlap length in n aluminum steel unit in described second-phase coil and third phase coil is less than 1/2 of n aluminum steel element length in second-phase coil respectively.
The invention has the beneficial effects as follows:
The weight of one, copper cash is large, and the weight of aluminum steel is little.A motor winding part changes to aluminum steel from copper cash, just can realize the weight alleviating motor;
They are two years old, the configuration of traditional motor winding, motor winding aluminum steel temperature rises obviously, when three phase electric machine leads to big current, there is the shortcoming of motor winding scaling loss, now the aluminum steel unit in coil groove is pretty good offered and put, i.e. n aluminum steel unit in first-phase coil, n aluminum steel unit in second-phase coil, n aluminum steel unit one_to_one corresponding in third phase coil and respectively overlapping successively, n aluminum steel unit in first-phase coil, in third phase coil, n aluminum steel unit is arranged in the two ends of second-phase coil n aluminum steel unit respectively, three-phase coil is made only to have the aluminum steel or copper cash that two-phase is identical in each coil groove, heat can disperse, when three phase electric machine leads to big current, solve because concentrating on a local heating thus causing the problem that motor winding is burnt.
Three, the aluminum steel of each phase and copper cash are all connected, and the resistance of the motor winding of three phase electric machine is equal, and electric current can disperse to flow through at three-phase swimmingly, are easy to heat radiation.
Accompanying drawing explanation
Below in conjunction with the embodiment in accompanying drawing, the present invention is described in further detail, but do not form any limitation of the invention.
Fig. 1 is the structural representation of the stator winding configuration three-phase coil of existing three phase electric machine;
Fig. 2 is the stator winding configuration three-phase coil of existing three phase electric machine, the structural representation of coil groove.
Fig. 3 is the winding diagram of three-phase coil in the stator winding configuration of a kind of three phase electric machine of the present invention;
Fig. 4 is the structural representation of the stator winding configuration center line ring recess of a kind of three phase electric machine of the present invention;
Fig. 5 is the structural representation of first-phase coil in embodiment one;
Fig. 6 is the structural representation of first-phase coil in embodiment one, second-phase coil;
Fig. 7 is the structural representation of first-phase coil in embodiment one, second-phase coil, third phase coil;
Fig. 8 is the structural representation of first-phase coil in embodiment one, second-phase coil, third phase coil, coil groove;
Fig. 9 is the structural representation of first-phase coil in embodiment two, second-phase coil, third phase coil;
Figure 10 is the structural representation of first-phase coil in embodiment two, second-phase coil, third phase coil, coil groove;
Figure 11 is the structural representation of first-phase coil in embodiment three, second-phase coil, third phase coil;
Figure 12 is the structural representation of first-phase coil in embodiment three, second-phase coil, third phase coil, coil groove;
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Consult shown in Fig. 3 to Figure 12, a kind of stator winding configuration of three phase electric machine, it comprises multiple coil groove 4, three-phase coil, three-phase coil comprises first-phase coil 1, second-phase coil 2, third phase coil 3, first-phase coil 1, second-phase coil 2, third phase coil 3 is successively set in multiple coil groove 4 from outside to inside, three-phase coil is formed by copper cash 5 and aluminum steel 6, copper cash 5 in each phase coil is connected with aluminum steel 6, aluminum steel 6 wherein in two phase coils is connected with the copper cash 5 in all the other phase coils, copper cash 5 in each phase coil, unit in the online ring recess 4 of aluminum steel 6 is respectively arranged with n, wherein, n is the natural number of >1, copper cash unit 7 in each phase coil, aluminum steel unit 8 is alternately distributed in multiple coil groove 4, three-phase coil only has the aluminum steel 6 or copper cash 5 that two-phase is identical in each coil groove 4, well being turned up the soil by aluminum steel unit 8 in three-phase coil is dispersed in coil groove 4, make all have a phase or two-phase aluminum steel in each coil groove 4, there is not three-phase aluminum steel all concentrates in a coil groove 4, heat can disperse, time three phase electric machine leads to big current, solve because concentrating on a local heating thus causing the problem that motor winding is burnt.
In addition, in order to make electric current can disperse swimmingly to flow through at three-phase, be easy to heat radiation, then the resistance of every phase coil is all equal.
Embodiment one
As shown in Fig. 5 to Fig. 8, n is 2, unit in the online ring recess 4 of copper cash 5 then in each phase coil, aluminum steel 6 is respectively arranged with two, two aluminum steel unit 8 one_to_one corresponding and overlapping successively respectively in two aluminum steel unit 8, third phase coil 3 in two aluminum steel unit 8, second-phase coil 2 in first-phase coil 1, in first-phase coil, in two aluminum steel unit 8, third phase coil, two aluminum steel unit 8 are arranged in the two ends of second-phase coil two aluminum steel unit 8 respectively.In the present embodiment, two aluminum steel unit 8 in first-phase coil 1, two aluminum steel unit 8 in second-phase coil 2, in third phase coil 3, two aluminum steel unit 8 are overlapping successively with clockwise direction respectively, two aluminum steel unit 8 in first-phase coil 1 are less than 1/2 of two aluminum steel unit 8 length in second-phase coil 2 respectively with the overlap length of two aluminum steel unit 8 in second-phase coil 2, two aluminum steel unit 8 in second-phase coil 2 are less than 1/2 of two aluminum steel unit 8 length in second-phase coil 2 respectively with two aluminum steel unit 8 overlap lengths in third phase coil 3, such in first-phase coil 1 two aluminum steel unit 8 that can make lay respectively at the two ends of two aluminum steel unit 8 in second-phase coil 2 with two aluminum steel unit 8 in third phase coil 3, ensure that in each coil groove 4 only have the aluminum steel 6 or copper cash 5 that two-phase is identical.
Embodiment two
As shown in Figure 9, Figure 10, with in embodiment one unlike, in first-phase coil 1, in two aluminum steel unit 8, second-phase coil 2, in two aluminum steel unit 8, third phase coil 3, two aluminum steel unit 8 are overlapping successively with counterclockwise direction respectively.
Embodiment three
As Figure 11, shown in Figure 12, be 3 with embodiment one unlike n, copper cash 5 then in each phase coil, unit in the online ring recess 4 of aluminum steel 6 is respectively arranged with three, three aluminum steel unit 8 in first-phase coil 1, three aluminum steel unit 8 in second-phase coil 2, three aluminum steel unit 8 one_to_one corresponding in third phase coil 3 and respectively overlapping successively, three aluminum steel unit 8 in first-phase coil 1, in third phase coil 3, three aluminum steel unit 8 are arranged in the two ends of second-phase coil 2 three aluminum steel unit 8 respectively, three aluminum steel unit 8 in first-phase coil 1 are less than 1/2 of three aluminum steel unit 8 length in second-phase coil 2 respectively with the overlap length of three aluminum steel unit 8 in second-phase coil 2, three aluminum steel unit 8 in second-phase coil 2 are less than 1/2 of three aluminum steel unit 8 length in second-phase coil 2 respectively with three aluminum steel unit 8 overlap lengths in third phase coil 3.
Above execution mode is only for illustrating technical conceive of the present invention and feature; its object is to allow person skilled in the art understand content of the present invention and to be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (6)
1. the stator winding configuration of a three phase electric machine, it comprises three-phase coil, multiple coil groove, described three-phase coil comprises first-phase coil, second-phase coil, third phase coil, described first-phase coil, second-phase coil, third phase coil is successively set in multiple coil groove from outside to inside, it is characterized in that: described three-phase coil is formed by copper cash and aluminum steel, copper cash in coil described in each phase is connected with aluminum steel, aluminum steel wherein in two phase coils is connected with the copper cash in all the other phase coils, copper cash in coil described in each phase, unit in the online ring recess of aluminum steel is respectively arranged with n, wherein, n is the natural number of >1, copper cash unit in each phase coil, aluminum steel units alternately is distributed in multiple coil groove, described three-phase coil only has the aluminum steel or copper cash that two-phase is identical in each coil groove.
2. the stator winding configuration of a kind of three phase electric machine according to claim 1, is characterized in that: the resistance of every mutually described coil is all equal.
3. the stator winding configuration of a kind of three phase electric machine according to claim 1 and 2, it is characterized in that: n aluminum steel unit one_to_one corresponding and overlapping successively respectively in n aluminum steel unit, third phase coil in n aluminum steel unit, second-phase coil in described first-phase coil, in described first-phase coil, in n aluminum steel unit, third phase coil, n aluminum steel unit is arranged in the two ends of second-phase coil n aluminum steel unit respectively.
4. the stator winding configuration of a kind of three phase electric machine according to claim 3, is characterized in that: in described first-phase coil, in n aluminum steel unit, second-phase coil, in n aluminum steel unit, third phase coil, n aluminum steel unit is overlapping successively with clockwise direction respectively.
5. the stator winding configuration of a kind of three phase electric machine according to claim 3, is characterized in that: in described first-phase coil, in n aluminum steel unit, second-phase coil, in n aluminum steel unit, third phase coil, n aluminum steel unit is overlapping successively with counterclockwise direction respectively.
6. the stator winding configuration of a kind of three phase electric machine according to claim 4 or 5, it is characterized in that: the overlap length of n aluminum steel unit in described first-phase coil and n aluminum steel unit in second-phase coil is less than 1/2 of n aluminum steel element length in second-phase coil respectively, n aluminum steel cells overlap length in n aluminum steel unit in described second-phase coil and third phase coil is less than 1/2 of n aluminum steel element length in second-phase coil respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310067954.XA CN103208874B (en) | 2013-03-04 | 2013-03-04 | Stator winding configuration of three-phase electric motor |
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| CN201310067954.XA CN103208874B (en) | 2013-03-04 | 2013-03-04 | Stator winding configuration of three-phase electric motor |
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| CN103208874A CN103208874A (en) | 2013-07-17 |
| CN103208874B true CN103208874B (en) | 2015-04-29 |
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| EP3098945A4 (en) * | 2014-01-22 | 2017-02-01 | Panasonic Intellectual Property Management Co., Ltd. | Three-phase motor |
| JP2015211603A (en) * | 2014-04-30 | 2015-11-24 | 三菱電機株式会社 | Motor, sealed type compressor, and refrigerating cycle device |
| CN104467231B (en) * | 2014-12-12 | 2018-01-12 | 广东美芝制冷设备有限公司 | For rotary compressor motor and there is its compressor |
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| US3774062A (en) * | 1971-12-20 | 1973-11-20 | Gen Electric | Stator assembly for single phase induction motor employing aluminum alloy starting winding |
| JP5446298B2 (en) * | 2009-02-09 | 2014-03-19 | 株式会社ジェイテクト | Electric motor |
| CN201717757U (en) * | 2010-06-12 | 2011-01-19 | 广东美芝制冷设备有限公司 | High-efficiency asynchronous motor |
| CN203193420U (en) * | 2013-03-04 | 2013-09-11 | 苏州爱知科技有限公司 | Three-phase motor stator winding configuration |
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