KR101784524B1 - Traction Motor - Google Patents

Traction Motor Download PDF

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Publication number
KR101784524B1
KR101784524B1 KR1020110083394A KR20110083394A KR101784524B1 KR 101784524 B1 KR101784524 B1 KR 101784524B1 KR 1020110083394 A KR1020110083394 A KR 1020110083394A KR 20110083394 A KR20110083394 A KR 20110083394A KR 101784524 B1 KR101784524 B1 KR 101784524B1
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KR
South Korea
Prior art keywords
phase
phase coil
coil
paper
insulation
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Application number
KR1020110083394A
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Korean (ko)
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KR20130021088A (en
Inventor
이상한
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현대모비스 주식회사
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Priority to KR1020110083394A priority Critical patent/KR101784524B1/en
Publication of KR20130021088A publication Critical patent/KR20130021088A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/32Windings characterised by the shape, form or construction of the insulation
    • H02K3/34Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28Layout of windings or of connections between windings

Abstract

The present invention is a UV phase insulation paper 10 having a larger cover cover 11 to reliably block contact between a space of a U-phase coil 4 and a V-phase coil 5 wrapping it, Phase coil 4 and the V-phase coil 5 by surely shielding the gap between the V-phase coil 5 and the wrapped W-phase coil 6 with the VW phase insulation paper 20, 5 and the W-phase coil 6 can be greatly improved, thereby greatly improving the quality and commerciality of the high-voltage three-phase traction motor.

Description

Traction Motor < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traction motor, and more particularly, to a high-voltage three-phase traction motor having an insulation structure capable of maximizing insulation between portions of an end coil of a stator.

Generally, the hybrid vehicle will have a high voltage three-phase traction motor that drives the rear wheels together with the engine.

 The above-mentioned traction motor drives the rear wheels through a power transmission path such as a propeller shaft connected to a generator and a generator that are generated by an engine, an engine, and a battery to charge the battery. The operation mode is set to a normal mode .

The traction motor is a core component that takes part in the engine output or needs durability to replace the engine itself. The insulation life on the stator side of the motor is treated as a concept equivalent to the lifetime of the motor.

FIG. 5 shows a configuration diagram of a high-voltage three-phase traction motor employing a conventional stator insulation structure.

As shown, the high voltage three-phase traction motor includes a rotor 2 having a rotor shaft inside the housing 1, and a rotor 2 is surrounded by the stator 3.

The stator 3 is composed of a U-phase coil 4, a V-phase coil 5 and a W-phase coil 6 which are wound up in an overlapped manner and are generally of an insulating structure using three kinds of slotted insulating paper, .

Among the above-described insulating structures, the inter-phase insulating paper mechanically separates the phase coils of the end coil part, thereby ensuring the space distance and creepage distance of the insulation caused by the potential difference. To this end, the inter- Phase insulating paper 100 sandwiched between the phase coil 4 and the V-phase coil 5 and a VW phase insulating paper 200 sandwiched between the V-phase coil 5 and the W-phase coil 6.

The phase-to-phase insulation procedure using the UV interphase insulating paper 100 and the VW phase insulating paper 200 of the stator 3 is generally performed by inserting the U phase coil 4, intermediate forming, inserting the UV insulating paper 100, ) → intermediate forming → insertion of insulating paper 200 between VW phases → insertion of W phase coil 6 → intermediate forming → final forming.

6 shows the positions of the U-V phase insulating paper 100 and the V-W phase insulating paper 200 at the time of phase insulation.

Phase insulating paper 100 is attached to a U-phase coil 4 wound on the inner circumferential surface of the stator 3 in a rectangular shape and the VW phase insulating paper 200 has a rectangular shape to form the stator 3 Phase coil 5 wound on the inner peripheral surface of the V-phase coil 5.

However, in the UV phase insulation paper 100, the U phase coils 4 wound on the inner circumferential surface of the stator 3 are spaced apart from each other, and the V phase coils 5 padded thereon are brought into contact with each other without mechanical separation. And the VW phase insulating paper 200 is formed so that the V phase coils 5 wound on the inner circumferential surface of the stator 3 are spaced apart from each other and the W phase coils 6 padded thereon are mechanically It becomes vulnerable to form another unsheathed section Wb to be brought into contact with and without separation.

The non-insulation intervals Wa and Wb are caused by the fact that the U-V phase insulating paper 100 and the V-W phase insulating paper 200 both have a simple rectangular shape.

As described above, since the insulation life of the traction motor at the side of the stator 3 is the same as the life of the motor, the non-insulation sections Wa and Wb are formed in spite of the inter- The durability of the traction motor that takes charge of a part of the output or replaces the engine itself is inevitably lethal.

Japanese Patent Application Laid-Open No. 10-2009-0110491 (Oct. 22, 2009) relates to an insulating paper for a stator of a motor, which is shown in Figs. 3 to 4 and Fig.

In view of the above, the present invention, which has been made in view of the above, has an advantage in that the U phase coil and the V phase coil are brought into contact with each other without mechanical separation by making the UV phase insulating paper and the VW phase insulating paper into three- Another object of the present invention is to provide a traction motor capable of maintaining high durability by maintaining an excellent insulation lifetime by preventing the formation of a gap between coil and W phase coils without mechanical separation.

According to another aspect of the present invention, there is provided a traction motor including a V-phase coil wound around a U-phase coil, Phase coil is wound on the stator, and the W-phase coil wound on the stator is separated from the V-

And a control unit.

The insulation structure is formed by using an inter-phase insulating paper implemented with a slot insulator and a slot wedge, and the inter-phase insulating paper is provided between a U-phase coil and a V-phase coil, And an insulating cover disposed between the V-phase coil and the W-phase coil and having a cover larger than the entire width.

The covering cover of the U-V phase insulating paper is formed at a position offset from the entire length, and the covering cover of the V-W phase insulating paper is formed at an intermediate position of the entire length.

The shield cover of the V-W phase insulation paper and the cover cover of the U-V phase insulation paper are formed in a rhombic shape so that the left and right sides of the V-W phase insulation paper can be folded with respect to the intermediate portion.

The shield cover of the VW phase insulation paper is formed to have a larger width than the cover of the UV phase insulation paper.

The present invention utilizes UV phase insulation paper and VW phase insulation paper to prevent the formation of U-phase coil, V-phase coil, V-phase coil and W-phase coil in a three- The lifetime maintenance degree is greatly increased and the durability of the traction motor is greatly improved, thereby improving the quality.

FIG. 1 is a configuration diagram of a high-voltage three-phase traction motor employing a stator insulation structure according to the present invention, FIG. 2 is a diagram illustrating the configuration of an inter-phase insulating paper of a stator according to the present invention, Phase three-phase traction motor employing a conventional stator insulation structure, and Fig. 6 is a view showing the construction of a high-voltage three-phase traction motor employing a conventional stator insulation structure. Fig. 6 is a cross- And Fig.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which illustrate exemplary embodiments of the present invention. The present invention is not limited to these embodiments.

Fig. 1 shows the configuration of a high-voltage three-phase drive motor employing the stator insulation structure according to the present embodiment.

3, the high-voltage three-phase traction motor includes a U-phase coil 4, a V-phase coil 5 and a W-phase coil 5, which are provided with a rotor 2 having a rotor shaft inside the housing 1, And a stator 3 wound around the rotor 2 and having an insulating structure composed of an insulating interlayer and an interstage insulating paper in addition to the slot insulating sheet and the slot wedge for insulating the stator 3.

As described above, since the phase insulating paper serves to mechanically separate the phase coils of the end coil part, the space distance and the creepage distance of the insulation caused by the potential difference can be ensured. To this end, the inter- Phase insulating paper 10 sandwiched between the phase coil 4 and the V-phase coil 5 and a VW phase insulating paper 20 sandwiched between the V-phase coil 5 and the W-phase coil 6.

Phase insulating coils 4 are adjacent to each other due to the UV phase insulating paper 10 and the V-phase coils 5 are not contacted without mechanical separation, Phase coil 5 are adjacent to each other and the W phase coils 6 padded thereon are brought into contact with each other without mechanical separation.

Accordingly, the stator 3 insulated by using the UV interphase insulating paper 10 and the VW phase insulating paper 20 is disposed in the space of the U phase coil 4, the V phase coil 5 and the W phase coil 6, It is possible to completely implement contact blocking.

FIG. 2 shows the structure of the U-V phase insulating paper 10 and the V-W phase insulating paper 20 as described above and the spatial blind state thereof.

2 (A) shows a UV-phase insulating paper 10 for spatially covering a non-insulating section Wa of a U-phase coil 4. The UV-phase insulating paper 10 has a substantially rectangular shape, The cover cover 11 is formed to have a larger size than the entire width size at a position offset by the width of the cover cover 11 so that the cover cover 11 is formed as a whole.

The entire length of the U-V phase insulation paper 10 is formed to have a length enough to cover a portion of the adjacent U-phase coil 4 adjacent to the U-phase coil 4.

For example, when the length that can cover the U phase coil 4 is set to the covering length B, the overlap length A, which can cover a part of the adjacent adjacent U phase coil 4, (B), the total length of the UV interphase insulating paper 10 is made up of the overlapping length (A) + the covering length (B).

In this case, the UV interphase insulating paper 10 is formed such that the overlapping length A is longer than the overlapping length B in the entire length, and the overlapping length A is between the overlapping length B and the overlapping length A Is formed.

As a result, the U-V phase insulation paper 10 has a biased shape in which the cover 11 is biased to one side.

The covering cover 11 is formed in a rhombic shape so that both the left and right sides can be folded with respect to an intermediate portion so as to form a receiving space.

Therefore, when the UV phase insulating paper 10 is positioned between the sections of the U phase coil 4 spaced apart from the windings of the stator 3, one of the U phase coils 4 has a covering length of the UV phase insulating paper 10 B and the neighboring U phase coils 4 adjacent to each other are partially covered by the overlapped length A of the UV interphase insulating paper 10 and the interval between the U phase coils 4 is covered with the UV phase insulating paper 10 And is shielded while being enclosed by the cover 11 of the cover.

Therefore, when the V-phase coil 5 is further wound on the U-phase coil 4, the shielding cover 11 of the UV interphase insulating paper 10 contacts the V-phase coil 5 with respect to the U- It is not necessary to form a non-insulation section Wa which causes contact by mechanical separation.

On the other hand, FIG. 2 (B) shows a V-W phase insulation paper 20 spatially covering the non-insulation section Wb of the V-phase coil 5.

The V-W phase insulation paper 20 has a substantially rectangular shape and has a larger overall size than the overall width of the middle portion of the overall length.

The total length of the V-W phase insulation paper 20 is formed to a length sufficient to cover a portion of the adjacent V-phase coil 5 adjacent to the V-phase coil 5.

For example, when the length that can cover the V-phase coil 5 is set to the covering length b, the overlap length a that can cover a part of the adjacent V-phase coil 5 adjacent to the V- (b), the total length of the VW interphase insulating paper 20 is made up of the overlapping length (a) + the covering length (b).

At this time, the VW phase insulating paper 20 is formed with the same length of the overlapping length a and the overlapping length b at the entire length, and the cover 21 is placed between the overlapping length b and the overlapping length a .

Accordingly, the V-W phase insulation paper 20 is formed in a shape of the center of the entire length of the cover 21.

The blind cover 21 is formed in a rhombic shape so that the left and right sides of the blind cover 21 can be folded with respect to an intermediate portion so as to form a receiving space.

Therefore, when the VW phase insulating paper 20 is positioned between the sections of the V-phase coil 5 spaced apart from the windings of the stator 3, one V-phase coil 5 is wound around the VW phase insulating paper 20 the adjacent V-phase coils 5 covered with adjacent V-phase coils 5 are partially covered with the overlapped length a of the VW phase insulating paper 20, and the V- As shown in FIG.

Phase winding 6 is wound on the V-phase coil 5 again so that the shielding cover 21 of the VW phase-to-phase insulating paper 20 contacts the V-phase coil 5 with the W-phase coil 6 It is not mechanically separated so as not to form a non-insulation section Wb which causes contact.

The shielding cover 21 of the V-W phase insulating paper 20 is formed to have a larger width than the shielding cover 11 of the U-V phase insulating paper 10 in this embodiment.

FIGS. 3 and 4 illustrate an assembling process for insulating a stator by applying an inter-phase insulating paper according to the present invention.

3 is an insulation structure of the U phase coil 4 and the V phase coil 5 using the UV phase insulating paper 10. When the U phase coil 4 is wound on the stator 3 as shown in the figure, A UV interphase insulating paper 10 is placed on the upper coil 4.

At this time, the shielding cover 11 of the U-V phase insulation paper 10 is wound and placed in a spacing interval between U-phase coils 4 adjacent to each other.

When the V phase coil 5 is again wound in a state where the UV phase insulating paper 10 is padded on the U phase coil 4 as described above, the V phase coil 5 is wound around the covering length of the UV phase insulating paper 10 (B) and the overlapping length (A), and is pressed while pressing the area of the covering cover (11).

Therefore, once the V-phase coil 5 is wound, the UV-phase insulating paper 10 can be held between the U-phase coil 4 and the V-phase coil 5 to maintain the insulation state, ) Portion is located between the spacing portion of the U-phase coil 4 and the V-phase coil 5 that surrounds the U-phase coil 4, thereby surely forming an insulation section Ka free of contact therebetween.

4 is a view showing a state in which the U phase coil 4 and the V phase coil 5 are insulated by the UV phase insulating paper 10 and then the V phase coil 5 and the W phase coil 6 are insulated As shown in the figure, VW phase insulating paper 20 is placed on the V-phase coil 5 wound on the stator 3.

At this time, the shield cover 21 of the V-W phase insulation paper 20 is wound and positioned in a spacing interval between V-phase coils 5 adjacent to each other.

When the W phase coil 6 is wound again with the VW phase insulation paper 20 padded above the V phase coil 5 as described above, the W phase coil 5 is wound around the VW phase insulation paper 20 (b) and the overlapping length (a), and is pressed while pressing the portion of the covering cover (21).

Therefore, once the W-phase coil 6 is wound, the VW phase insulation paper 20 is sandwiched between the V-phase coil 5 and the W-phase coil 6 to maintain the insulation state, ) Portion is located between the interval of the V-phase coil 5 and the W-phase coil 6 surrounding the V-phase coil 5, thereby forming another insulation section Kb without contact between them.

As described above, in this embodiment, the UV phase insulation paper 10 having the larger cover cover 11 reliably blocks the contact between the space of the U-phase coil 4 and the V-phase coil 5 wrapping it, Phase insulation between the U-phase coil 4 and the V-phase coil 5 by surely shielding the gap between the V-phase coil 5 and the wrapped W-phase coil 6 with the VW phase insulation paper 20, The insulation performance of the stator 3 for superimposing and winding the V-phase coil 5 and the W-phase coil 6 can be greatly improved. As a result, the quality and the commerciality of the high-voltage three-phase traction motor can be greatly improved.

1: housing 2: rotor
3: Stator 4: U-phase coil
5: V-phase coil 6: W-phase coil
10: UV-phase insulating paper 11, 21:
20: VW phase insulation paper

Claims (6)

  1. Phase coil and a V-phase coil wound around the V-phase coil, the V-phase coil being wound over the interval between the wound U-phase coils is prevented from being formed between the U-phase coil and the V- The stator including a stator to which an insulation structure is applied which is prevented from being subjected to another ground contact in contact with the phase coil,
    The insulating structure is divided into UV phase insulating paper and VW phase insulating paper; The total length of the UV phase insulation paper does not form a cut-off section of the UV phase insulation paper in the stator by covering a part of the U phase coil adjacent to the one U phase coil forming the separation section, The total length of the VW phase insulation paper does not form a cut-off section of the VW phase insulation paper in the stator by covering a part of the V-phase coil adjacent to the one V-phase coil forming the separation section;
    Wherein the stator forms a spatial interception of the U-phase coil, the V-phase coil, and the W-phase coil with a part of the UV phase insulation paper and the VW phase insulation paper without interruption
    And a traction motor.
  2. The traction motor of claim 1, wherein the insulation structure is implemented with a slotted insulator and a slotted wedge.
  3. The V-phase insulation paper according to claim 1, wherein the UV phase insulation paper has a cover formed between the U-phase coil and the V-phase coil and formed to have a larger width than the width of the UV phase insulation paper, And a shield cover which is positioned between the W phase coil and formed to have a width larger than a width of the VW phase insulation paper.
  4. 4. The traction motor according to claim 3, wherein the covering cover of the UV phase insulating paper is formed at a position offset from the entire length, and the covering cover of the VW phase insulating paper is formed at an intermediate position of the entire length.
  5. The traction motor according to claim 4, wherein the covering cover of the VW phase insulating paper and the covering cover of the UV phase insulating paper are formed in a rhombic shape so that both the left and right sides can be folded with respect to the intermediate portion so as to form a receiving space.
  6. The traction motor according to claim 5, wherein the covering cover of the VW phase-to-phase insulating paper is formed to have a width larger than that of the covering cover of the UV phase insulating paper.
KR1020110083394A 2011-08-22 2011-08-22 Traction Motor KR101784524B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110083394A KR101784524B1 (en) 2011-08-22 2011-08-22 Traction Motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110083394A KR101784524B1 (en) 2011-08-22 2011-08-22 Traction Motor
CN201210276181.1A CN102957248B (en) 2011-08-22 2012-08-03 Traction engine

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KR20130021088A KR20130021088A (en) 2013-03-05
KR101784524B1 true KR101784524B1 (en) 2017-10-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016226200A1 (en) * 2016-12-23 2018-06-28 Bühler Motor GmbH Brushless motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005218255A (en) * 2004-01-30 2005-08-11 Toyota Motor Corp Interphase insulating paper and motor comprising it

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007006632A (en) * 2005-06-24 2007-01-11 Hitachi Ltd Three-phase rotary electric machine
JP2009005464A (en) * 2007-06-20 2009-01-08 Toyota Motor Corp Inter-phase and intra-phase insulating paper of multiphase distributed winding rotating electric machine, three-phase distributed winding rotating electric machine including inter-phase and intra-phase insulating paper, and manufacturing method of three-phase distributed winding rotating electric machine having inter-phase and intra-phase insulating paper
JP2010239750A (en) * 2009-03-31 2010-10-21 Aisin Aw Co Ltd Interphase insulation paper and stator for three-phase rotating electric machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005218255A (en) * 2004-01-30 2005-08-11 Toyota Motor Corp Interphase insulating paper and motor comprising it

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KR20130021088A (en) 2013-03-05
CN102957248B (en) 2016-08-31
CN102957248A (en) 2013-03-06

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