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WO2018030153A1 - Machine électrique rotative triphasée pour générateur-démarreur - Google Patents

Machine électrique rotative triphasée pour générateur-démarreur Download PDF

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Publication number
WO2018030153A1
WO2018030153A1 PCT/JP2017/027049 JP2017027049W WO2018030153A1 WO 2018030153 A1 WO2018030153 A1 WO 2018030153A1 JP 2017027049 W JP2017027049 W JP 2017027049W WO 2018030153 A1 WO2018030153 A1 WO 2018030153A1
Authority
WO
WIPO (PCT)
Prior art keywords
phase
teeth
starter generator
rotating electrical
electrical machine
Prior art date
Application number
PCT/JP2017/027049
Other languages
English (en)
Japanese (ja)
Inventor
典樹 森本
萩村　将巳
Original Assignee
株式会社ミツバ
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 株式会社ミツバ filed Critical 株式会社ミツバ
Priority to CN201780047247.0A priority Critical patent/CN109565230A/zh
Publication of WO2018030153A1 publication Critical patent/WO2018030153A1/fr

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Classifications

    • 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
    • H02K3/18—Windings for salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • 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 three-phase rotating electrical machine for a starter generator.
  • This application claims priority on August 12, 2016 based on Japanese Patent Application No. 2016-158876 for which it applied to Japan, and uses the content here.
  • the starter generator for example, there is a so-called starter generator (starter generator, SG) used as a motor for starting an engine of a vehicle and as a generator after starting the engine.
  • the starter generator includes a bottomed cylindrical flywheel (rotor) and a stator fixed inside an engine case.
  • the flywheel is connected to a crankshaft extending from the engine.
  • a tile-like permanent magnet is provided on the inner peripheral surface side of the flywheel.
  • teeth on which a plurality of armature coils are wound project from the stator along the circumferential direction.
  • the plurality of armature coils are composed of three phases (U phase, V phase, W phase).
  • the starter generator When the starter generator is used as a motor for starting the engine, a current is selectively supplied to a predetermined armature coil. In this case, a magnetic flux is formed in the teeth, and the flywheel is rotated using a magnetic attractive force or a repulsive force generated between the magnetic flux and the permanent magnet of the flywheel. As a result, the crankshaft rotates.
  • the starter generator when the starter generator is used as a generator after starting the engine, the amount of magnetic flux of the permanent magnet changes as the flywheel rotates. This change in the amount of magnetic flux becomes an electromotive force to generate a current in the armature coil.
  • the current generated in the armature coil is stored in, for example, a battery or supplied to an attached electric device.
  • starter generators are designed with emphasis on the motor characteristics because the function as a motor for starting the engine is regarded as important. For this reason, the function as a generator after starting the engine varies depending on the specifications. For example, the amount of power generated when used as a generator becomes surplus, and the load on the engine may deteriorate. On the other hand, when trying to optimize the generator, there is a problem that desired motor characteristics cannot be obtained.
  • the present invention provides a three-phase rotating electrical machine for a starter generator that can obtain good characteristics regardless of whether it is used as a motor or a generator.
  • a three-phase rotating electrical machine for a starter generator is provided with a stator in which a plurality of teeth are arranged adjacent to each other in the circumferential direction, and provided rotatably with respect to the stator.
  • n is a natural number of 3 or more
  • the number of teeth is T
  • the number of poles of the magnetic pole is P
  • P: T 3n ⁇ 1: 3n Set to meet
  • P: T 3n ⁇ 2: 3n Set to meet
  • the plurality of teeth includes a plurality of first teeth around which a first phase coil is wound, a plurality of second teeth around which a second phase coil is wound, and a third phase coil.
  • a plurality of third teeth, and all of the plurality of teeth are arranged in phase with at least one of the adjacent teeth.
  • the teeth in the same phase are all adjacent in the circumferential direction. Has been placed.
  • n is an even number
  • m is a natural number of 1 or more
  • T the number T of the teeth
  • FIG. 1 is a plan view of a three-phase rotating electrical machine 1 for a starter generator.
  • the three-phase rotating electrical machine 1 for a starter generator is of an outer rotor type used for a motorcycle, for example.
  • a function of a generator provided with a permanent magnet and a starter motor function (engine start function) are integrated.
  • a three-phase rotating electrical machine 1 for a starter generator includes a flywheel 2 that is fixed to a crankshaft of an engine (not shown), and that rotates in synchronization with the crankshaft, and a stator 4 that is fixed to an engine block (not shown). Yes.
  • An armature coil 18 composed of three phases (U phase, V phase, W phase) is wound around the stator 4.
  • the flywheel 2 has a rotor yoke 3 formed in a substantially bottomed cylindrical shape from a metal made of a magnetic material.
  • the bottom of the rotor yoke 3 (the back side in the drawing in FIG. 1) is fixed to a crankshaft (not shown).
  • On the peripheral wall 33 of the rotor yoke 3 permanent magnets 8 magnetized to 14 poles are provided on the inner peripheral surface side so that the magnetic poles are changed in order in the circumferential direction.
  • a ferrite magnet is used as the permanent magnet 8.
  • the stator 4 includes a stator core 17 that is disposed inside the peripheral wall 33 of the rotor yoke 3 and that is disposed coaxially with the rotation axis O.
  • the stator core 17 is formed by laminating plate materials such as electromagnetic steel plates in the axial direction.
  • the stator core 17 has a substantially annular stator body 17a.
  • a plurality of bolt insertion holes 20 are formed in the stator body 17a along the circumferential direction. These bolt insertion holes 20 are used for fastening and fixing the stator 4 to the engine block by inserting bolts (not shown).
  • Twelve teeth 16 protruding outward in the radial direction are provided side by side in the circumferential direction on the outer peripheral portion of the stator body 17a. And between each tooth
  • the armature coils 18 are passed through the slots 21, and the armature coils 18 are wound around the teeth 16 from above the insulator 40 attached to the stator core 17.
  • a position detection sensor (not shown) for detecting the rotational position of the flywheel 2 is attached to the stator body 17a.
  • the position detection sensor detects the rotational position of the flywheel 2 by detecting the magnetic flux of the permanent magnet 8 provided in the rotor yoke 3 and detecting the change of the magnetic flux accompanying the rotation of the flywheel 2.
  • Each tooth 16 is assigned to three phases (U phase, V phase, W phase).
  • n is an even number
  • m is a natural number of 1 or more
  • N / 2 in-phase teeth 16 are arranged adjacent to each other (in a line) in the circumferential direction to form 2 m in-phase teeth groups 86U, 86V, 86W.
  • the in-phase in-phase tooth groups 86U, 86V, 86W are arranged to face each other about the rotation axis O.
  • the teeth 16 are arranged so that all of the in-phase teeth 16 of the three phases (U-phase, V-phase, W-phase) are adjacent (lined up) in the circumferential direction.
  • n 4. Therefore, a method for assigning the phases of the teeth 16 in the case where n is an even number will be described in detail below. A specific method of assigning the phases of the teeth 16 when n is an even number will be described later. That is, the teeth 16 are assigned in the order of the U phase, U phase, V phase, V phase, W phase, W phase, U phase, U phase, V phase, V phase, W phase, and W phase in the circumferential direction. .
  • the U-phase teeth 16 are referred to as U-phase teeth 16U
  • the V-phase teeth 16 are referred to as V-phase teeth 16V
  • W-phase teeth 16 are referred to as W-phase teeth 16W.
  • the twelve teeth 16 include two U-phase teeth groups 86U including two U-phase teeth 16U, two V-phase teeth groups 86V including two V-phase teeth 16V, and two W There are two W-phase teeth groups 86W composed of the phase teeth 16W.
  • one phase teeth group 86U, 86V, 86W is formed by two in-phase teeth 16U, 16V, 16W arranged in the circumferential direction, respectively.
  • the current stored in the battery is supplied to the armature coil 18 via the harness 26.
  • a current is selectively supplied to the armature coil 18 of a predetermined phase wound around each tooth 16.
  • a magnetic flux is sequentially formed in the teeth 16 of each phase.
  • a magnetic attractive force or a repulsive force is generated between the magnetic flux and the permanent magnet 8 provided on the flywheel 2, and the flywheel 2 rotates.
  • a crankshaft (not shown) is rotated via the flywheel 2 and the engine is started.
  • FIG. 2 is a graph showing a change in electric power when the vertical axis is the electric power [W] input to the three-phase rotating electrical machine for the starter generator and the horizontal axis is the rotational speed [r / min] of the flywheel,
  • the three-phase rotating electrical machine for starter generator 1 of this embodiment is compared with a general three-phase rotating electrical machine for starter generator.
  • the general three-phase rotating electric machine for starter generator referred to here is a three-phase rotating electric machine for starter generator in which the number of teeth 16 (number of slots) is set to 18 for 12 poles. It is.
  • the U phase, the V phase, and the W phase are assigned in this order in the circumferential direction to the teeth of this general three-phase rotating electrical machine for a starting generator.
  • the three-phase rotating electrical machine for starter generator 1 of the present embodiment is driven with a smaller input [W] as compared with a general three-phase rotating electrical machine for starter generator. .
  • the number of teeth 16 is T
  • the number of poles of the magnetic pole is P
  • the number T of teeth 16 and the number P of poles are given by the formula ( 2) is set to satisfy.
  • the above [Condition 1] is satisfied as a method of assigning the three phases (U phase, V phase, W phase) of each tooth 16. For this reason, the three-phase rotating electrical machine 1 for the starter generator can obtain better characteristics than the conventional one in both the starter motor function (engine start function) and the power generation function after the engine start. it can.
  • the number P of magnetic poles is set to “14”
  • the number T of teeth 16 is set to “12”
  • n 4.
  • the present invention is not limited to this, and the three-phase rotating electrical machine 1 for a starter generator satisfies either the above formula (1) or the above formula (2), and either [Condition 1] or [Condition 2]. It is only necessary to be set so as to satisfy.
  • the teeth 16 may be disposed so as to be in phase with at least one of the adjacent teeth 16.
  • the modification of the three-phase rotary electric machine 1 for starter generators is given concretely.
  • n 4
  • n 10 poles
  • n a natural number of 3 or more.
  • m 1, which satisfies the above formula (2) and [Condition 1].
  • n is an odd number
  • the teeth 16 of the three phases U phase, V phase, W phase
  • n 6
  • m 1
  • the number T of teeth 16 and the number of poles P are m times (1 time)
  • [Condition 1] Three in-phase teeth 16U, 16V, 16W are arranged side by side in the circumferential direction to form two in-phase teeth groups 86U, 86V, 86W.
  • the in-phase in-phase tooth groups 86U, 86V, 86W are arranged to face each other about the rotation axis O.
  • the starter generator set so as to satisfy the above-mentioned formula (1) and either of the formula (2) or the formula (3) and satisfy either [condition 1] or [condition 2]
  • the three-phase rotating electrical machine 1 has the same effect as the above-described embodiment.
  • SYMBOLS 1 Three-phase rotary electric machine for starter generators 2 ... Flywheel (rotor) 4 ... Stator 8 ... Permanent magnet (magnetic pole) 16 ... Teeth 16U ... U-phase Teeth (First Teeth) 16V ... V phase teeth (second teeth) 16W ... W phase teeth (3rd tooth) 18 ... Armature coil (coil) 60 ... Crankshaft 86U ... U-phase teeth group (common-phase teeth group) 86V ... V phase teeth group (common phase teeth group) 86W ... W-phase teeth group (in-phase teeth group) O ... Rotation axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

Dans la présente invention, lorsque n est un nombre naturel supérieur ou égal à 3, le nombre de dents (16) est égal à T et le nombre de pôles d'un aimant permanent (8) est égal à P, le nombre T des dents (16) et le nombre de pôles P étant établis de manière à satisfaire l'équation P : T = 3n ± 1 : 3n, lorsque n est un nombre impair, et de manière à satisfaire l'équation P : T = 3n ± 2 : 3n, lorsque n est un nombre pair. La pluralité de dents comprend une pluralité de dents de phase U (16U), une pluralité de dents de phase V (16V) et une pluralité de dents de phase W (16W), et toutes les dents de la pluralité de dents (16) sont agencées de manière à avoir la même phase qu'au moins l'une des dents adjacentes (16).
PCT/JP2017/027049 2016-08-12 2017-07-26 Machine électrique rotative triphasée pour générateur-démarreur WO2018030153A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780047247.0A CN109565230A (zh) 2016-08-12 2017-07-26 启动发电机用三相旋转电机

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016158876A JP2018026985A (ja) 2016-08-12 2016-08-12 始動発電機用三相回転電機
JP2016-158876 2016-08-12

Publications (1)

Publication Number Publication Date
WO2018030153A1 true WO2018030153A1 (fr) 2018-02-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4164098A1 (fr) * 2021-10-08 2023-04-12 New Kailung Gear Co., Ltd. Structure de moteur triphasé

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7470497B2 (ja) * 2019-09-13 2024-04-18 株式会社デンソー ブラシレスモータ
JP2022069087A (ja) 2020-10-23 2022-05-11 本田技研工業株式会社 回転電機

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09172762A (ja) * 1996-12-27 1997-06-30 Hitachi Ltd 永久磁石界磁形ブラシレスモータ
JP2001112226A (ja) * 1999-10-08 2001-04-20 Moriyama Manufacturing Co Ltd ３相磁石発電機
JP2005073450A (ja) * 2003-08-27 2005-03-17 Matsushita Electric Ind Co Ltd モータジェネレータ
JP2008211918A (ja) * 2007-02-27 2008-09-11 Kokusan Denki Co Ltd 回転電機
JP2012244689A (ja) * 2011-05-17 2012-12-10 Honda Motor Co Ltd インバータ発電機

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3985281B2 (ja) * 1996-12-04 2007-10-03 株式会社デンソー 回転電機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09172762A (ja) * 1996-12-27 1997-06-30 Hitachi Ltd 永久磁石界磁形ブラシレスモータ
JP2001112226A (ja) * 1999-10-08 2001-04-20 Moriyama Manufacturing Co Ltd ３相磁石発電機
JP2005073450A (ja) * 2003-08-27 2005-03-17 Matsushita Electric Ind Co Ltd モータジェネレータ
JP2008211918A (ja) * 2007-02-27 2008-09-11 Kokusan Denki Co Ltd 回転電機
JP2012244689A (ja) * 2011-05-17 2012-12-10 Honda Motor Co Ltd インバータ発電機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4164098A1 (fr) * 2021-10-08 2023-04-12 New Kailung Gear Co., Ltd. Structure de moteur triphasé

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Publication number Publication date
JP2018026985A (ja) 2018-02-15
CN109565230A (zh) 2019-04-02

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