JP2008141921A - Stator for rotary electric machine - Google Patents

Stator for rotary electric machine Download PDF

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Publication number
JP2008141921A
JP2008141921A JP2006328199A JP2006328199A JP2008141921A JP 2008141921 A JP2008141921 A JP 2008141921A JP 2006328199 A JP2006328199 A JP 2006328199A JP 2006328199 A JP2006328199 A JP 2006328199A JP 2008141921 A JP2008141921 A JP 2008141921A
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Japan
Prior art keywords
coil
phase
insulating paper
peripheral
portions
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JP2006328199A
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JP4956162B2 (en
Inventor
Takashi Hanai
Takao Hirano
Masakatsu Matsubara
Sukeyasu Mochizuki
恭男 平野
資康 望月
正克 松原
隆 花井
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Toshiba Corp
Toshiba Industrial Products Manufacturing Corp
東芝産業機器製造株式会社
株式会社東芝
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Priority to JP2006328199A priority Critical patent/JP4956162B2/en
Publication of JP2008141921A publication Critical patent/JP2008141921A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility

Abstract

A stator of a rotating electrical machine is provided that includes interphase insulating paper that insulates between in-phase, out-of-phase, and crossover wires and coil end portions of coil end portions.
A stator 1 of a rotating electrical machine includes a stator core 2, a three-phase coil 3, 4, 5 wound around the stator core 2 with a separate pole connection, and a coil 3 of each of these phases. , 4 and 5 are provided with interphase insulating paper 8A and interphase insulating paper 8B provided on the coil end portions 3ae, 3be, 4ae, 4be, 5ae and 5be protruding from the end surface 2a of the stator core 2. . The interphase insulating paper 8A is disposed between the coil end portions 3ae, 3be and 4ae, 4be of different phases, and between the 4ae, 4be and 5ae, 5be, and the interphase insulating paper 8B includes the pole coils 3a, 4a, The coil end portions 3ae, 4ae, 5ae of 5a are arranged from the inner peripheral side to the outer peripheral sides of the coil end portions 3be, 4be, 5be of the adjacent pole coils 3b, 4b, 5b correspondingly.
[Selection] Figure 1

Description

  The present invention relates to a stator for a rotating electrical machine in which interphase insulating paper is disposed at a coil end portion protruding from an end face of a stator core.

Generally, in a stator of a rotating electric machine, for example, a three-phase motor, between different coil end portions protruding from the end face of the stator core, for example, insulation paper between different phases (interphase insulation paper) Paper) is inserted (see Patent Document 1).
JP 7-298530 A

  When the operating voltage is high, such as a motor for a vehicle such as an electric vehicle or a hybrid vehicle, insulation is performed between the coil end portions of the same phase and between the connecting wire connecting the pole coils of the same phase and the coil end portion. There is a need. However, the above-described interphase insulating paper is intended to insulate between the coil end portions of different phases, and has a function to insulate between the coil end portions of the same phase and a function to insulate between the crossover wire and the coil end portion. Does not have.

  The present invention has been made in view of the above circumstances, and the object thereof is to provide interphase insulating paper that insulates between the same phase of each coil end portion, between different phases, and between the connecting wire and the coil end portion. It is to provide a stator for a rotating electric machine.

  A stator of a rotating electrical machine according to a first aspect of the present invention projects from a stator core, a plurality of coils wound around the stator core, and end faces of the stator core of the coils of each phase. Interphase insulating paper provided in the coil end portion, and the interphase insulating paper is provided on the inner peripheral side of the coil end portion of the same phase adjacent to the inner peripheral side and the outer peripheral side of one coil end portion. And it is arranged so that the crossover wire located between the coil end parts of a different phase among the crossover wires connecting the in-phase pole coils may be sandwiched while crossing to the other side of the outer peripheral side.

  A stator of a rotating electrical machine according to a second aspect of the present invention projects from a stator core, a three-phase coil wound around the stator core, and an end face of the stator core of each phase coil. Interphase insulating paper provided in the coil end portion, the three-phase coil is connected in a separate manner, and the interphase insulating paper is connected to the inner end side and the outer peripheral side of one coil end portion. And an in-phase insulating paper disposed between the inner peripheral side and the outer peripheral side of the adjacent in-phase coil end portion, and an in-phase insulating paper disposed between the different phase coil end portions. It is said.

  According to the stator of the rotating electrical machine of the first aspect of the present invention, the interphase insulating paper is applied to the inner peripheral side of the coil end portion of the same phase adjacent to the inner peripheral side and the outer peripheral side of the one coil end portion. And the other end of the outer peripheral side, and the crossover wire located between the coil end portions of different phases is arranged so as to sandwich the insulation wire between the coil end portions of the same phase and between the crossover wire and the coil end portion. In addition, the interphase insulating paper is disposed between the coil end portions of different phases, whereby the coil end portions of different phases can be insulated.

  According to the stator of the rotating electric machine according to claim 2 of the present invention, in the three-phase coil connected to each other, the in-phase insulating paper is fed from one side of the inner peripheral side and the outer peripheral side of one coil end portion. Because the interphase insulating paper is arranged between the coil end portions of the in-phase and the out-of-phase, the inter-phase insulating paper is arranged between the coil end portions of the out-of-phase. Can be insulated, and the connecting wire located between the coil end portions of different phases can be sandwiched by the in-phase insulating paper and the in-phase insulating paper.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 2 shows a schematic configuration of a rotating electric machine, for example, a stator of an electric motor. The stator 1 has a configuration in which a stator core 2 is wound with a plurality of phases, for example, a U-phase coil 3, a V-phase coil 4, and a W-phase coil 5, which are three-phase coils. The stator core 2 has an annular shape formed by laminating and integrally bonding a plurality of steel plates. In the present embodiment, since the electric motor is an inversion type, the center direction side of the stator core 2 is the inner peripheral side.

  The stator core 2 is formed with 48 slots 6 for disposing the coils 3, 4, 5 of each phase. Slot insulating paper 7 (shown only in FIG. 4) is arranged inside each slot 6 to insulate the stator core 2 from the coils 3, 4, 5 of each phase disposed in the slot 6. It is carried out.

  The U-phase coil 3 is disposed on the outermost peripheral side in the slot 6 of the stator core 2, and as shown in FIGS. 1 and 2, four odd-numbered pole coils 3 a having the same polarity, Even-numbered four pole coils 3b having different polarities with respect to the pole coil 3a, a jumper 3c that electrically connects the pole coils 3a, and a jumper 3d that electrically connects the pole coils 3b It is composed of The pole coils 3a and 3b are alternately arranged at equal intervals in the circumferential direction, and the connecting wires 3c are arranged on the outer peripheral side of the coil end portion 3be protruding from the end surface 2a of the stator core 2 of each pole coil 3b. Each connecting wire 3d is arranged on the inner peripheral side of the coil end portion 3ae of each pole coil 3a.

  V-phase coil 4 is arranged on the inner peripheral side of U-phase coil 3 and has the same configuration as U-phase coil 3. That is, the V-phase coil 4 is composed of four odd-numbered pole coils 4a having the same polarity, four even-numbered pole coils 4b having different polarities with respect to the pole coil 4a, and the pole coils 4a. The connecting wire 4c is electrically connected, and the connecting wire 4d is electrically connected between the pole coils 4b. The pole coils 4a and 4b are alternately arranged at equal intervals in the circumferential direction, the connecting wires 4c are arranged on the outer peripheral side of the coil end portions 4be of the pole coils 4b, and the connecting wires 4d are connected to the pole coils 4a. It is arrange | positioned at the inner peripheral side of the coil end part 4ae.

  W-phase coil 5 is arranged on the inner peripheral side of V-phase coil 4 and has the same configuration as U-phase coil 3. That is, the W-phase coil 5 includes four odd-numbered pole coils 5a having the same polarity, four even-numbered pole coils 5b having different polarities with respect to the pole coil 5a, and the pole coils 5a. The connecting wire 5c is electrically connected, and the connecting wire 5d is electrically connected between the pole coils 5b. The pole coils 5a and 5b are alternately arranged at equal intervals in the circumferential direction, the connecting wires 5c are arranged on the outer peripheral side of the coil end portions 5be of the pole coils 5b, and the connecting wires 5d are connected to the pole coils 5a. It is arrange | positioned at the inner peripheral side of the coil end part 5ae.

  FIG. 5 shows an equivalent circuit of the coils 3, 4, 5 of each phase. Each pole coil 3, 4 and 5 is "separated by pole" in which every other coil of the same polarity is connected in series. That is, the four pole coils 3a in the U-phase coil 3 are connected in series by the jumper 3c, and the four pole coils 3b are connected in series by the jumper 3d. The four pole coils 4a and 4b of the V-phase coil 4 and the four pole coils 5a and 5b of the W-phase coil 5 are similarly connected in series. The pole coils 3a, 4a and 5a group are star-connected, and the pole coils 3b, 4b and 5b group are star-connected, and these are connected in parallel between the three-phase power terminals.

  Now, as shown in FIG. 3, the interphase insulating paper 8 includes a pair of main bodies 8a and 8a formed in a substantially rectangular shape, and a connecting strip connecting the pair of main bodies 8a and 8a, for example, two pieces made of an insulating material. Connecting bands 8b and 8b. The interphase insulating paper 8 is used as the interphase insulating paper 8A and the interphase insulating paper 8B as described below.

  Between the phase ends 3ae, 3be of the pole coils 3a, 3b of the U-phase coil 3 and the coil ends 4ae, 4be of the pole coils 4a, 4be of the V-phase coil 4 and between the coil ends 4ae of the V-phase coil 4 , 4be and interphase insulating paper 8A, 8A are arranged between the different phases of the coil end portions 5ae, 5be in the pole coils 5a, 5b of the W-phase coil 5, respectively, as shown in FIG.

  Moreover, from the inner peripheral side of each coil end part 3ae, 4ae, 5ae of each pole coil 3a, 4a, 5a, the coil end part of each in-phase pole coil 3b, 4b, 5b adjacent in the circumferential direction corresponding to these In-phase insulating papers 8B, 8B, and 8B are disposed over the outer periphery of 3be, 4be, and 5be, respectively. Further, these in-phase insulating papers 8B, 8B, 8B are arranged in the same phase adjacent to each other in the circumferential direction from the outer peripheral side of the coil end portions 3be, 4be, 5be of the respective pole coils 3b, 4b, 5b. It arrange | positions continuously over the inner peripheral side of coil end part 3ae, 4ae, 5ae of pole coil 3a, 4a, 5a. Although not shown, these interphase insulating papers 8B, 8B, and 8B repeatedly cross the inner and outer peripheral sides of the coil end portions 3ae, 4ae, 5ae and 3be, 4be, 5be, and the stator core 2 It is arranged all around.

  With the above configuration, the in-phase insulating paper 8B is interposed between the circumferential end surfaces of the in-phase coil end portions 3ae and 3be, 4ae and 4be, 5ae and 5be, and the out-of-phase coil end portions 3ae, 3be and 4ae and 4be The interphase insulating paper 8A is interposed between 4ae and 4be and 5ae and 5be. Further, the crossover wires 3d, 4c, 4d, and 5c are sandwiched between the in-phase insulating paper 8A and the in-phase insulating paper 8B that are adjacent in the radial direction.

  FIG. 4 shows a cross section of the stator 1 taken along line AA in FIG. In the cross section of this portion, the crossover wire 3c is arranged on one outermost peripheral side (upper right side in FIG. 4) of the stator core 2, and the pair of main bodies 8a, 8a of the in-phase insulating paper 8B is disposed inside thereof. One of the main bodies 8a is disposed between the crossover 3c and the coil end portion 3be of the pole coil 3b. The other main body 8a of the in-phase insulating paper 8B is arranged on the outer peripheral side (upper left side in FIG. 4) of the coil end portion 3be of the other pole coil 3b corresponding thereto via the stator core 2.

  Between the coil end portion 3be of the pole coil 3b, the pole coil 4a, and the coil end portion 4ae, one of the pair of main bodies 8a, 8a of the interphase insulating paper 8A is disposed, and the other main body is disposed. 8a is arranged between the coil end portion 3be of the other pole coil 3b and the coil end portion 4ae of the pole coil 4a corresponding to each other via the stator core 2.

  Between the coil end part 4ae of the pole coil 4a and the coil end part 5ae of the pole coil 5a (on the right side in FIG. 4), a connecting wire 4d is arranged, and the interphase insulating paper is provided on the outer peripheral side of the connecting wire 4d. A main body 8a of 8B is arranged, and a main body 8a of the interphase insulating paper 8A is arranged on the inner peripheral side of the crossover 4d. Thereby, the crossover wire 4d is sandwiched between the interphase insulating paper 8A (the main body 8a of the interphase insulating paper 8) and the interphase insulating paper 8B (the main body 8a of the interphase insulating paper 8).

  A crossover wire 5d is arranged on one innermost peripheral side (lower right side in FIG. 4) of the stator core 2, and between the crossover wire 5d and the coil end portion 5ae of the pole coil 5a is in phase. A main body 8a of insulating paper 8B is arranged. At this time, the connection bands 8b and 8b of the interphase insulating paper 8A and the connection bands 8b and 8b of the interphase insulating paper 8B are arranged in appropriate slots 6 of the stator core 2.

Next, the operation and effect of the stator 1 having the above configuration will be described.
First, the slot insulating paper 7 is accommodated in the slot 6 of the stator core 2, and the three-phase coils 3, 4, 5 are inserted into the slot insulating paper 7 and the coil end portions 3 ae, 3 be, 4 ae, 4 be, The interphase insulating paper 8A and the interphase insulating paper 8B are interposed between 5ae and 5be.

  And although not shown in figure, each coil end part 3ae-5be is expanded in the outer peripheral direction (in FIG. 4, upward direction) of the stator core 2, and it shape | molds by pressing to the end surface 2a side. Thereby, for example, in the cross-sectional portion of FIG. 4, the crossover 4 d is sandwiched between the interphase insulating paper 8 </ b> A and the inphase insulating paper 8 </ b> B. In-phase insulating paper 8B is interposed between the jumper wire 3c and the coil end portion 3be of the pole coil 3b, and inter-phase insulating paper 8A is interposed between the jumper wire 5d and the coil end portion 5ae of the pole coil 5a. It will be in the state. In this state, the coil end portions 3ae to 5be, the interphase insulating papers 8A and 8A, and the interphase insulating papers 8B, 8B, and 8B are fastened with an insulating thread (not shown), and a varnish (not shown). Is fixed, the coil end portions 3ae to 5be are fixed.

  In this way, the in-phase insulating paper 8B is moved from one side on the inner peripheral side of one coil end portion (for example, the inner peripheral side of each coil end portion 3ae, 4ae, 5ae of the pole coils 3a, 4a, 5a). Corresponding to the other end of the outer peripheral side of the adjacent in-phase coil end portions (for example, the outer peripheral side of the coil end portions 3be, 4be, 5be of the pole coils 3b, 4b, 5b) By arranging 8A between the coil end portions 3ae, 3be and 4ae, 4be of different phases, and between 4ae, 4be and 5ae, 5be, the coil end portions 3ae, 3be, 4ae, 4be, 5ae of the same phase Interphase insulating paper 8 is interposed between 4be and 5be, 5be, between 4be and 5be, between 5be and between the coil end portions 3ae, 3be and 4ae, 4be of different phases. It can be.

By arranging the crossover wire (for example, the crossover wire 4d) between the interphase insulating paper 8A and the interphase insulating paper 8B, each crossover wire 4d and the coil end portion 4ae radially adjacent to the crossover wire 4d are arranged. And 5ae can be insulated.
In-phase insulating paper 8B is interposed between the jumper wire 3c and the coil end portion 3be of the pole coil 3b, and inter-phase insulating paper 8A is interposed between the jumper wire 5d and the coil end portion 5ae of the pole coil 5a. Thus, it is possible to insulate between the connecting wires 3c and 5d and the coil end portions 3be and 5ae of the corresponding pole coils 3b and 5a.

  Here, in the present embodiment, the operational effect of the in-phase insulating paper for the portion along the AA cross-sectional line has been described. The interphase insulating paper 8 is interposed between the parts, and insulation is possible at any part.

The present invention is not limited to the embodiment described above and shown in the drawings, and the following modifications and expansions are possible.
In the present embodiment, all the connecting wires are provided on one side of the stator core, but one or a plurality of connecting wires, for example, connecting wires that cross between V-phase pole coils, are supported via the stator core. It is good also as a structure provided in the other side to do.
The connecting strip portion of the interphase insulating paper may have a shape other than a belt shape, for example, a thread shape.
The interphase insulating paper disposed on the entire circumference of the stator core may be formed of a single sheet or may be configured to overlap a plurality of sheets.

In addition, although the in-phase insulating paper of the rotating electrical machine of the present invention has been described as applied to a three-phase coil, it can also be applied to a multi-phase coil other than the three-phase coil. In this case, the interphase insulating paper is crossed from the inner peripheral side and the outer peripheral side of one coil end part to the inner peripheral side and the outer peripheral side of the adjacent in-phase coil end part, and the connecting wire You may arrange | position so that the connecting wire located between the coil end parts of a different phase may be pinched | interposed. By arranging in this way, it is possible to insulate between the coil ends of the same phase and between the crossover and the coil end, and the interphase insulating paper is arranged between the coil ends of the different phases. The coil end portions can be insulated.
Further, the number and materials of the above-described components can be changed as appropriate.

The elements on larger scale which show schematically the stator of one embodiment of the present invention Side view schematically showing the overall structure of the stator Top view of interphase insulating paper Sectional view cut along line AA in FIG. Diagram showing equivalent circuit of three-phase coil

Explanation of symbols

  In the drawings, 1 is a stator, 2 is a stator core, 2a is an end face, 3, 4 and 5 are coils, 3a, 3b, 4a, 4b, 5a and 5b are pole coils, 3ae, 3be, 4ae, 4be and 5ae. , 5be are coil end portions, 3c, 3d, 4c, 4d, 5c, 5d are crossover wires, 8 is interphase insulating paper, 8A is interphase insulating paper, and 8B is interphase insulating paper.

Claims (2)

  1. A stator core,
    A multi-phase coil wound around the stator core;
    Interphase insulation paper provided on the coil end portion protruding from the end face of the stator core of each phase coil,
    The interphase insulating paper extends from one side of the inner peripheral side and outer peripheral side of one coil end portion to the other side of the inner peripheral side and outer peripheral side of the adjacent in-phase coil end portion, and the same-phase electrode coils A stator for a rotating electrical machine, wherein the connecting wires are arranged so as to sandwich the connecting wires located between the coil end portions of different phases among the connecting wires connecting the wires.
  2. A stator core,
    A three-phase coil wound around the stator core;
    Interphase insulation paper provided on the coil end portion protruding from the end face of the stator core of each phase coil,
    The three-phase coil is connected in a separate manner,
    The interphase insulating paper is arranged between the inner peripheral side and the outer peripheral side of the same phase coil end portion adjacent to the inner peripheral side and the outer peripheral side of one coil end portion. Paper,
    A stator for a rotating electrical machine, comprising: inter-phase insulating paper disposed between coil end portions of different phases.
JP2006328199A 2006-12-05 2006-12-05 Rotating electric machine stator Active JP4956162B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101958595A (en) * 2009-07-14 2011-01-26 株式会社丰田自动织机 The phase insulation structure and being used to that is used for motor connects the method for the interphase insulating sheet of motor
WO2012011299A1 (en) * 2010-07-20 2012-01-26 株式会社 東芝 Rotational electric machine stator and rotational electric machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6021772B2 (en) 2013-09-26 2016-11-09 三菱電機株式会社 Rotating electric machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63265536A (en) * 1987-04-23 1988-11-02 Hitachi Ltd Armature winding for rotary electric machine
JP2006149103A (en) * 2004-11-19 2006-06-08 Aisin Aw Co Ltd Three-phase motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63265536A (en) * 1987-04-23 1988-11-02 Hitachi Ltd Armature winding for rotary electric machine
JP2006149103A (en) * 2004-11-19 2006-06-08 Aisin Aw Co Ltd Three-phase motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101958595A (en) * 2009-07-14 2011-01-26 株式会社丰田自动织机 The phase insulation structure and being used to that is used for motor connects the method for the interphase insulating sheet of motor
US8456054B2 (en) 2009-07-14 2013-06-04 Kabushiki Kaisha Toyota Jidoshokki Interphase insulative structure for motor and method for coupling interphase insulative sheet in motor
WO2012011299A1 (en) * 2010-07-20 2012-01-26 株式会社 東芝 Rotational electric machine stator and rotational electric machine
JP2012029354A (en) * 2010-07-20 2012-02-09 Toshiba Corp Stator of rotary electric machine and rotary electric machine
CN103026591A (en) * 2010-07-20 2013-04-03 株式会社东芝 Rotational electric machine stator and rotational electric machine
CN103026591B (en) * 2010-07-20 2015-07-15 株式会社东芝 Rotational electric machine stator and rotational electric machine
US9379588B2 (en) 2010-07-20 2016-06-28 Kabushiki Kaisha Toshiba Stator of rotating electrical machine and rotating electrical machine
EP2597756A4 (en) * 2010-07-20 2016-11-30 Toshiba Kk Rotational electric machine stator and rotational electric machine

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