WO2019116829A1 - Moteur - Google Patents

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Publication number
WO2019116829A1
WO2019116829A1 PCT/JP2018/042603 JP2018042603W WO2019116829A1 WO 2019116829 A1 WO2019116829 A1 WO 2019116829A1 JP 2018042603 W JP2018042603 W JP 2018042603W WO 2019116829 A1 WO2019116829 A1 WO 2019116829A1
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WO
WIPO (PCT)
Prior art keywords
winding
motor
units
unit
slot
Prior art date
Application number
PCT/JP2018/042603
Other languages
English (en)
Japanese (ja)
Inventor
貴行 近岡
金澤　宏至
崚登 千石
Original Assignee
日立オートモティブシステムズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日立オートモティブシステムズ株式会社 filed Critical 日立オートモティブシステムズ株式会社
Publication of WO2019116829A1 publication Critical patent/WO2019116829A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings

Definitions

  • the present invention relates to a motor, and more particularly to a motor having a plurality of winding units in a stator core.
  • Patent Document 1 As a first prior art in the present technical field, there is a configuration in which winding units are mixed in the same slot in a winding structure composed of two winding units (see Patent Document 1). Furthermore, as a second prior art, there is a winding structure composed of two winding units configured by concentrated winding (see Patent Document 2).
  • the present invention has been made in consideration of the above points, and an object of the present invention is to propose a highly reliable motor in which adjacent windings are difficult to electrically contact with each other between a plurality of winding units.
  • the motor includes a plurality of winding units electrically driven independently of each other, and the winding is provided in one of the plurality of slots constituting the stator core.
  • adjacent windings can not be in electrical contact with each other between a plurality of winding units, and reliability can be increased.
  • FIG. 2 is a circuit diagram showing an example of an electrical configuration of a motor shown in FIG. 1 and a drive circuit thereof. It is a figure which shows the example of winding structure which expand
  • FIG. 1 is a side view showing a configuration example of a motor 100 according to a first embodiment.
  • the motor 100 includes a plurality of winding units, and in the present embodiment, as an example, two three-phase winding units electrically independent of each other are provided.
  • the illustrated example shows only a motor portion in a motor unit of an electric power steering (hereinafter, abbreviated as "EPS") in which a motor 100 and an ECU (not shown) are integrally formed.
  • the motor 100 has a motor component housed in a housing 2.
  • the pulley 1 provided in the motor 100 constitutes a power transmission mechanism by gear drive (not shown) via a belt.
  • the ECU is electrically connected via the terminals 20 u 1, 20 v 1, 20 w 1, 20 u 2, 20 v 2 and 20 w 2 on the right side of the illustration provided on the motor 100 side.
  • the first winding unit 51 is provided with a U1 phase terminal 20u1, a V1 phase terminal 20v1 and a W1 phase terminal 20w1.
  • the second winding unit 52 is provided with a U2-phase terminal 20u2, a V2-phase terminal 20v2 and a W1-phase terminal 20w2.
  • the motor 100 is electrically connected to an inverter on the ECU side described later via the terminals 20u1, 20v1, 20w1, 20u2, 20v2, and 20w2.
  • the motor 100 is provided with a magnetic pole sensor 3 for detecting the magnetic pole position of the rotor.
  • a detection unit for a detection signal output from the magnetic pole sensor 3 is provided on the ECU side.
  • FIG. 2 is a circuit diagram showing an example of the electrical configuration of the motor 100 shown in FIG. 1 and its drive circuit.
  • the drive circuit includes two inverters 41 and 42 and a power supply 4 for supplying DC power to the two inverters 41 and 42, and drives the motor 100 with two drive systems.
  • the first winding unit 51 of the motor 100 is connected to one of the inverters 41, and the second winding unit 52 of the motor 100 is connected to the other of the inverters 42.
  • one inverter 41 and the other inverter 42 are operated in parallel.
  • the motor 100 is configured to include two independent three-phase windings.
  • the rotor is composed of SPM (surface magnet structure) or IPM (embedded magnet structure).
  • the stator core is configured by distributed winding so that the order of cogging torque becomes high.
  • the number of poles of the rotor is eight.
  • FIG. 3 shows a winding configuration example of the first winding unit 51 shown in FIG.
  • the U1-phase winding is composed of a U11 winding, a U12 winding, a U21 winding, and a U22 winding.
  • the shapes of the respective windings shown in the drawings are simplified for convenience of explanation.
  • the V1 phase winding is composed of a V11 winding, a V12 winding, a V21 winding and a V22 winding.
  • the W1 phase winding is composed of a W11 winding, a W12 winding, a W21 winding, and a W22 winding.
  • the first winding unit 41 is configured of 24 slots.
  • the first winding unit 51 adopts lap winding as its winding structure, and is configured as shown in the wiring diagram.
  • the wire connected to each slot is drawn with a single wire for simplicity, but in actuality, it is composed of a plurality of wires.
  • the case where the number of slots per pole and per phase is 2 with an 8-pole motor has been described, but even if the number of slots changes even if the number of slots changes, this embodiment Similar effects can be obtained.
  • this embodiment as an example, it is configured by eight poles and 72 slots, 12 poles and 72 slots, and 12 poles.
  • FIG. 4 is a diagram showing an example of a winding configuration of the second winding unit 52 shown in FIG.
  • the U2 phase winding is composed of U31 winding, U32 winding, U41 winding and U42 winding.
  • the V2-phase winding is composed of a V31 winding, a V32 winding, a V41 winding, and a V42 winding.
  • the W2-phase winding is composed of a W31 winding, a W32 winding, a W41 winding, and a W42 winding.
  • the second winding unit 52 is configured of 24 slots.
  • FIG. 5 is a view showing an example of a winding configuration in which two winding units are expanded.
  • the left half of the drawing represents the first winding unit 51, and the right half of the drawing represents the second winding unit 52.
  • the first winding unit 51 and the second winding unit 52 are configured so as not to electrically short each other by arranging so that there is no mechanical contact with each other. .
  • FIG. 6 is a perspective view showing a configuration example of the two winding units 51 and 52. As shown in FIG. The neutral points un1, vn1, wn1 of the first winding unit 51 are electrically connected to each other. The neutral points un2, vn2, wn2 of the second winding unit 52 are similarly electrically connected to each other.
  • the two winding units 51 and 52 are provided at positions not overlapping each other in the circumferential direction of the cylindrical stator core. In this way, in the two winding units 51 and 52, the respective windings come into contact with each other, making it difficult to short.
  • a gap 7 is provided in the vicinity of the stator core 6 between the two winding units 51 and 52.
  • the two winding units 51 and 52 further have a configuration in which the respective windings are in contact with each other and thus are not easily shorted.
  • the input wire (for example, U1 phase terminal 20u1) of the first winding unit 51 and the neutral point terminal (for example, neutral point terminal un2) of the second winding unit 52 are arranged to be separated from each other, There is no mechanical contact even at a position away from near the stator core.
  • the two winding units 51 and 52 can be electrically connected by arranging to be separated left and right. As a result, the short circuit does not occur between the two winding units 51 and 52. Therefore, for example, even when the first winding unit 51 breaks down, the motor 100 can be driven using the other second winding unit 52.
  • the EPS can be operated reliably because at least one of the two winding units 51 and 52 is always in operation without failure. Moreover, when operating the EPS with only one winding unit as described above, the EPS is operated using substantially two winding units 51 and 52 by operating the one winding unit more than usual. Since the EPS operates at all times, not only safety can be enhanced, but also the behavior of the EPS can prevent the operator from feeling uncomfortable.
  • the motor according to the second embodiment has substantially the same configuration as the motor 1 according to the first embodiment, and performs substantially the same operation. The description of the operation will be omitted, and the following description will be made focusing on the difference between the two.
  • FIG. 7 is a view showing an example of a winding configuration in which a winding unit of a motor according to a second embodiment is developed.
  • temperature sensors 81 and 82 are provided in the respective winding units 51 and 52 as state abnormality detecting means.
  • the temperature sensor 81 of the first winding unit 51 and the temperature sensor 82 of the second winding unit 52 are disposed at positions that are less susceptible to the heat of the winding units. This makes it possible to monitor the state of each of the winding units 51 and 52. For example, when the first winding unit 51 generates abnormal heat generation, the first winding unit 51 is stopped for normal operation. It is possible to reduce the influence on the second winding unit 52 which is a second winding unit.
  • a motor according to a third embodiment has substantially the same configuration as motor 100 according to the first embodiment, and performs substantially the same operation. The description of the operation will be omitted, and the following description will be made focusing on the difference between the two.
  • FIG. 8 is a circuit diagram showing an example of an electrical configuration of a drive circuit of a motor according to the third embodiment.
  • the specific configuration of the second winding unit 52 is omitted because it is separately illustrated.
  • the neutral point terminals un1, vn1, wn1 of the first winding unit 51 are connected to the inverter 41 side
  • the neutral point terminals un2, vn2, wn2 of the second winding unit 52 are inverters It is connected to the 42 side.
  • the neutral point terminals un1, vn1, wn1 are electrically connected with each other, and the neutral point terminals un2, vn2, wn2 are electrically connected with each other. Furthermore, the neutral point terminals un1, vn1, wn1 of the three-phase winding are connected by a semiconductor relay or a mechanical relay in the inverter 41, and the neutral point terminals un2, vn2, wn2 of the three-phase winding in the inverter 42
  • the three-phase drive is implemented by connecting the two with a semiconductor relay or a mechanical relay.
  • the windings divided and disposed in the plurality of winding units 51 and 52 are distributed windings so that they can be configured by the in-phase windings in one slot at the boundary between the plurality of winding units 51 and 52.
  • the structure which is further constituted by lap winding is adopted.
  • since the wire straddling the two units can be omitted even in the coil end portion, a structure in which the windings do not contact each other between the winding units 51 and 52 can be shorted between the plurality of winding units. Can be prevented.
  • one slot is formed of a winding of one phase, and the first winding unit 51 and the second winding unit 52 is configured to be shifted 180 degrees in mechanical angle.
  • contact between the windings can be prevented, so that an electrical short between the plurality of winding units 51 and 52 can be prevented even if an insulation failure such as a pin hole occurs.
  • the first winding unit 51 and the second winding unit 52 are separated with a gap, by providing a state detection means between each winding unit, an abnormality in the winding unit can be detected at an early stage, By stopping energization, the influence on other normal winding units can be reduced.
  • the heat transfer between the winding units can be suppressed by the gaps between the winding units, and the cooling effect can be exhibited by the air flow path.
  • the present invention can be widely applied to a motor provided with a plurality of winding units.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

La présente invention a pour objet de fournir un moteur hautement fiable dans lequel des enroulements adjacents les uns aux autres entre une pluralité d'unités d'enroulement n'ont pas tendance à venir en contact électrique entre eux. Ledit moteur est pourvu d'une pluralité d'unités d'enroulement qui sont commandées électriquement, indépendamment les unes des autres, et d'une unité d'enroulement dans laquelle un enroulement est logé sous forme d'un enroulement imbriqué d'un enroulement distribué dans une encoche parmi une pluralité d'encoches constituant un noyau de stator, et d'une autre unité d'enroulement dans laquelle un enroulement est logé sous forme d'un enroulement imbriqué d'un enroulement distribué dans n'importe quelle autre encoche parmi la pluralité d'encoches, ladite encoche étant disposée à une position qui ne chevauche pas ladite autre encoche dans la direction circonférentielle du noyau de stator.
PCT/JP2018/042603 2017-12-14 2018-11-19 Moteur WO2019116829A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-239838 2017-12-14
JP2017239838A JP2021036735A (ja) 2017-12-14 2017-12-14 モータ

Publications (1)

Publication Number Publication Date
WO2019116829A1 true WO2019116829A1 (fr) 2019-06-20

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JP (1) JP2021036735A (fr)
WO (1) WO2019116829A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021193462A1 (fr) * 2020-03-25 2021-09-30 ファナック株式会社 Moteur
TWI747593B (zh) * 2020-11-05 2021-11-21 台達電子工業股份有限公司 馬達及其髮夾形導線定子
TWI786747B (zh) * 2021-07-27 2022-12-11 台達電子工業股份有限公司 馬達及馬達定子
TWI795786B (zh) * 2021-04-23 2023-03-11 台達電子工業股份有限公司 髮夾形導線馬達定子
JP2023074151A (ja) * 2021-11-17 2023-05-29 本田技研工業株式会社 ステータ用コイル

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011030406A (ja) * 2009-06-24 2011-02-10 Denso Corp モータ
JP2015126642A (ja) * 2013-12-27 2015-07-06 日立オートモティブシステムズ株式会社 モータ制御装置
WO2016132450A1 (fr) * 2015-02-17 2016-08-25 三菱電機株式会社 Moteur duplex triphasé à aimant permanent et dispositif de direction assistée électrique
WO2017090514A1 (fr) * 2015-11-27 2017-06-01 日立オートモティブシステムズエンジニアリング株式会社 Machine dynamo-électrique et système de machine dynamo-électrique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011030406A (ja) * 2009-06-24 2011-02-10 Denso Corp モータ
JP2015126642A (ja) * 2013-12-27 2015-07-06 日立オートモティブシステムズ株式会社 モータ制御装置
WO2016132450A1 (fr) * 2015-02-17 2016-08-25 三菱電機株式会社 Moteur duplex triphasé à aimant permanent et dispositif de direction assistée électrique
WO2017090514A1 (fr) * 2015-11-27 2017-06-01 日立オートモティブシステムズエンジニアリング株式会社 Machine dynamo-électrique et système de machine dynamo-électrique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021193462A1 (fr) * 2020-03-25 2021-09-30 ファナック株式会社 Moteur
TWI747593B (zh) * 2020-11-05 2021-11-21 台達電子工業股份有限公司 馬達及其髮夾形導線定子
TWI795786B (zh) * 2021-04-23 2023-03-11 台達電子工業股份有限公司 髮夾形導線馬達定子
TWI786747B (zh) * 2021-07-27 2022-12-11 台達電子工業股份有限公司 馬達及馬達定子
JP2023074151A (ja) * 2021-11-17 2023-05-29 本田技研工業株式会社 ステータ用コイル
JP7320584B2 (ja) 2021-11-17 2023-08-03 本田技研工業株式会社 ステータ用コイル

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