WO2011101986A1 - Stator et procédé de fabrication de stator - Google Patents

Stator et procédé de fabrication de stator Download PDF

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Publication number
WO2011101986A1
WO2011101986A1 PCT/JP2010/052597 JP2010052597W WO2011101986A1 WO 2011101986 A1 WO2011101986 A1 WO 2011101986A1 JP 2010052597 W JP2010052597 W JP 2010052597W WO 2011101986 A1 WO2011101986 A1 WO 2011101986A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator core
stator
resin
electromagnetic steel
coil
Prior art date
Application number
PCT/JP2010/052597
Other languages
English (en)
Japanese (ja)
Inventor
常治 吉村
浩二 中西
泰弘 上野
修一 中山
直希 吉田
尚文 千葉
Original Assignee
トヨタ自動車株式会社
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 トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Priority to PCT/JP2010/052597 priority Critical patent/WO2011101986A1/fr
Publication of WO2011101986A1 publication Critical patent/WO2011101986A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/09—Magnetic cores comprising laminations characterised by being fastened by caulking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/12—Machines characterised by the bobbins for supporting the windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/325—Windings characterised by the shape, form or construction of the insulation for windings on salient poles, such as claw-shaped poles

Definitions

  • the present invention relates to a stator used by forming a stator core by laminating electromagnetic steel sheets and a stator manufacturing method, and to a technique for suppressing distortion generated in the stator core.
  • Patent Document 1 discloses a technique regarding a stator of a motor.
  • a groove portion extending in the axial direction is formed on the inner peripheral side of the yoke portion of the stator core.
  • the resin filling part with which each groove part is filled is provided integrally. Since the covering member is firmly fixed to the stator core in the resin-filled portion, it is possible to prevent the covering member from being cracked or peeled off.
  • Patent Document 2 discloses a technique related to a stator piece and a stator of a motor.
  • the core piece of the stator core formed by laminating electromagnetic steel sheets is formed so that the teeth width of one electromagnetic steel sheet located at both ends in the stacking direction is narrower than the teeth width of the electromagnetic steel sheet located in the center in the stacking direction.
  • Patent Document 3 discloses a technique regarding a stator, a manufacturing method thereof, and an electric motor using the stator.
  • a core piece of a stator core formed by laminating electromagnetic steel sheets is composed of an electromagnetic steel sheet having a narrow tooth width and an electromagnetic steel sheet having a wide tooth width, and is alternately stacked.
  • Patent Document 4 discloses a technique related to a split stator and a split stator manufacturing method.
  • an adhesive layer is provided around the teeth portion of the stator core so that the filler mixed in the resin used for the insulator does not have directionality. . Since the direction of the filler mixed in the insulator can be arranged at random, it is possible to suppress the influence of the filler that hinders heat transfer, and to improve the thermal conductivity.
  • FIG. 13 is a schematic cross-sectional view of a connecting portion that connects the stator cores by caulking.
  • the electromagnetic steel sheet 150 includes a caulking recess 111b, and the electromagnetic steel sheet 150 is overlapped to form a split stator core 111.
  • FIG. 14 is a cross-sectional view showing a state where an insulator is insert-molded in the stator core.
  • the insulator 114 covers the teeth portion 111a as shown in FIG.
  • the thermal expansion coefficients of the insulator 114 made of resin and the split stator core 111 formed by laminating the metal electromagnetic steel plates 150 are different. For this reason, when the insulator 114 is molded and cooled, a contraction force F1 is generated on the teeth portion 111a side and an expansion force F2 is generated on the outer peripheral side of the split stator core 111.
  • an object of the present invention is to provide a stator or a stator manufacturing method in which distortion is less likely to occur due to stress generated during insulator molding.
  • a stator according to an aspect of the present invention has the following characteristics. (1) A stator core that is formed by winding a conductor, and a stator core that is formed by laminating electromagnetic steel plates and that protrudes from an outer ring portion toward an inner peripheral side, and that is inserted into the coil.
  • a resin mold part in which a coil end portion of the coil inserted into the resin is covered with a resin, and the electromagnetic steel sheet constituting the stator core is provided with a caulking recess, and the caulking recess is used to
  • the stator core is formed by connecting electromagnetic steel sheets, and a groove portion is provided in the outer ring portion of the stator core or the root portion of the teeth in parallel to the axial direction of the stator core, and the groove portion A resin column is provided.
  • the outer ring portion here refers to a portion of the stator core that is formed in an annular shape and has a teeth portion on the inner peripheral side, excluding the teeth portion. Therefore, it refers to a region surrounded by a virtual plane connecting the bottom surface of the slot formed between both end surfaces and the outer peripheral surface of the stator core and between the teeth, and the bottom surface of the adjacent slots.
  • a stator manufacturing method has the following characteristics.
  • the portion, in the stator manufacturing method laminating the electromagnetic steel sheets using the caulking recess used in the electromagnetic steel sheet, forming the stator core, and setting the stator core in a mold,
  • the insulator is formed by insert molding, and a resin column is formed by pouring resin into a groove provided in the outer ring portion of the electromagnetic steel sheet or the root portion of the teeth in parallel with the axial direction of the stator core.
  • the following actions and effects can be obtained by the stator according to one aspect of the present invention having such characteristics.
  • the aspect of the invention described in the above (1) includes a coil formed by winding a conductor and a tooth formed by laminating electromagnetic steel plates and inserting the coil so as to protrude from the outer ring portion toward the inner peripheral side.
  • the electromagnetic steel sheet constituting the stator core is provided with a crimp recess, and the crimp recess
  • the stator core is formed by connecting the electromagnetic steel sheets using the outer peripheral portion of the stator core or the root portion of the teeth, the groove portion is provided in parallel to the axial direction of the stator core, and the resin column is provided in the groove portion. It is what is provided.
  • the stator core is connected by caulking recesses to create a slight gap between the electromagnetic steel sheets.
  • the stator core includes a groove portion in the outer ring portion, and a resin column is formed in the groove portion. For this reason, even if the insulator is insert-molded in the stator core and the resin constituting the insulator is contracted, the stator core is not deformed. This is because the resin pillar provided in the outer ring portion of the stator core is integrated with the electromagnetic steel plate constituting the stator core, and when the insulator shrinks when the insulator is insert-molded, the insulator and the resin This is because, since the columns contract in the same direction, the force generated when the insulator contracts is offset by the force generated when the resin column contracts.
  • a coil is formed by winding a conductor, and the coil is inserted into a tooth formed on a stator core made of laminated electromagnetic steel sheets.
  • the stator manufacturing method of forming a resin mold part that covers a portion with resin the electromagnetic steel sheets are laminated using the caulking recesses used in the electromagnetic steel sheet to form a stator core, and the stator core is formed into a mold.
  • the insulator is formed by insert molding, and a resin column is formed by pouring resin into a groove provided parallel to the axial direction of the stator core in the outer ring portion of the electromagnetic steel sheet or the root portion of the teeth. .
  • the insulator and the resin pillar provided in the groove of the outer ring portion it is possible to suppress the distortion of the stator core due to the shrinkage of the insulator.
  • Magnetic steel sheets and insulators have different coefficients of thermal expansion due to differences in materials. For this reason, when the resin melted at the time of insulator molding is injected into the cavity, insert molded, and solidified, the resin constituting the insulator contracts and a force is generated on the teeth side to compress in the stator core axial direction. In order to generate a force that counteracts this, a resin column is formed on the outer ring portion of the stator core.
  • stator of this embodiment It is a perspective view of the stator of this embodiment. It is a perspective view of the split type stator core of this embodiment. It is a perspective view in the state where insert molding of an insulator was carried out to a stator core of this embodiment. It is a perspective view in the state where a coil was inserted in a stator core of this embodiment. It is a perspective view in the state where the resin mold part was formed in the stator core of this embodiment. It is a mimetic diagram at the time of insert-molding an insulator of this embodiment. It is a schematic perspective view of the stator core of this embodiment. It is a schematic sectional drawing of the stator core of this embodiment. It is a perspective view showing another embodiment of a stator core of this embodiment.
  • FIG. 1 It is a perspective view showing another embodiment of a stator core of this embodiment. It is a perspective view showing another embodiment of a stator core of this embodiment. It is a perspective view showing another embodiment of a stator core of this embodiment. It is a perspective view showing another embodiment of a stator core of this embodiment. It is a schematic cross section of the connection part which connects a stator core by caulking joining. It is the side surface cross-section schematic diagram of the stator core which showed the contractive force which generate
  • FIG. 1 the perspective view of the stator of this embodiment is shown.
  • FIG. 2 is a perspective view of a split-type stator core.
  • FIG. 3 is a perspective view of a state where an insulator is insert-molded into the stator core.
  • FIG. 4 is a perspective view of a state where a coil is inserted into the stator core.
  • FIG. 5 is a perspective view of a state where the resin mold portion 113 is formed on the stator core. It should be noted that details are different from FIG. 1 for convenience of explanation.
  • the stator 10 uses a split-type stator core 111, and is formed by arranging 18 stator core units 110 in an annular shape and fitting an outer ring 102 on the outer periphery.
  • a bus bar holder 101 is provided at the coil end of the stator 10.
  • the stator core 111 is formed by laminating a plurality of electromagnetic steel plates 150 formed in a substantially T shape by press working.
  • the state of lamination is as shown in FIG.
  • the stator core 111 includes a tooth portion 111a so as to protrude toward the inner peripheral side of the stator 10, and the electromagnetic steel plates 150 are fixed to each other by a caulking recess 111b.
  • the groove part 111e is formed in the outer ring part 111c provided along the outer peripheral side of the stator core 111 from the teeth part 111a.
  • the groove 111e is a V-shaped groove formed at the time of pressing.
  • a coil 112 is inserted into the tooth portion 111a after an insulator 114 is provided.
  • the insulator 114 is insert-molded with respect to the stator core 111 as shown in FIG.
  • the insulator 114 includes a flange portion 114a, an annular portion 114b, and a coil support wall 114c, and is formed of an insulating resin.
  • the resin forming the insulator 114 needs to transfer heat from the heated coil 112 to the stator core 111 side. For this reason, the filler is mixed in the insulator 114 for the purpose of improving heat transferability.
  • FIG. 6 is a schematic view when insert-molding the insulator.
  • the stator core 111 is disposed between the movable mold D1 and the fixed mold D2, so that an insulator forming cavity B1 and a resin column forming cavity B2 are formed between the movable mold D1 and the stator core 111. Is done.
  • the insulator 114 and the resin column 130 are insert-formed by pouring molten resin into the insulator forming cavity B1 and the resin column forming cavity B2, cooling, and releasing.
  • the insulator forming cavity B1 and the resin column forming cavity B2 are provided with a gate for supplying resin. The same resin is injected into the insulator forming cavity B1 and the resin column forming cavity B2.
  • the coil 112 is wound by edgewise bending a rectangular conductor having a rectangular cross section.
  • a flat conductor is a conductor having a high conductivity such as copper and is coated with an insulating resin such as enamel.
  • an outer terminal portion 112a and an inner terminal portion 112b are formed and connected to a bus bar (not shown).
  • the coil 112 is inserted into the insulator 114 in a tooth portion 111 a formed in the stator core 111.
  • the resin mold portion 113 is formed so as to cover the coil 112 as shown in FIG.
  • the stator 10 of this embodiment is the said structure, there exists an effect demonstrated below.
  • the stator 10 of this embodiment has a coil 112 formed by winding a conductor and a tooth portion 111a formed by laminating electromagnetic steel plates 150 and inserting the coil 112 protruding from the outer ring portion 111c toward the inner peripheral side.
  • the electromagnetic steel plate 150 constituting the stator core 111 is provided.
  • stator core 111 is formed on the outer ring portion 111c of the stator core 111 with the axial direction of the stator core 111.
  • the groove 111e is provided in parallel, and the resin pillar 130 is provided in the groove 111e.
  • FIG. 7 shows a schematic perspective view of the stator core. Note that the insulator is omitted for convenience of explanation.
  • FIG. 8 shows a schematic cross-sectional view of the stator core.
  • Stator core 111 is formed by laminating electromagnetic steel plates 150. The electromagnetic steel sheet 150 is punched with a press, and at the same time, a caulking recess 111b is formed. Then, after press working, the stator core 111 is overlapped with the crimped recess 111b and integrated as shown in FIG. In FIG. 2, only one crimping recess 111b is shown, but a plurality of crimping recesses 111b may be provided depending on the size and required strength of the stator core 111.
  • the insulator 114 is insert-molded and the resin pillar 130 is formed at the same time.
  • the resin column 130 is formed by pouring resin into a groove 111e formed in the outer ring portion 111c of the stator core 111, and is in close contact with the stator core 111 by slightly entering the resin into the gap d. It is formed integrally.
  • the shrinkage force of the resin column 130 is determined by the type of resin, the thickness of the resin column 130, and the like.
  • a method of changing the material of the resin column 130 is also conceivable, but since the merit of forming together with the insulator 114 is impaired, the position of the groove 111e formed on the outer peripheral surface 111d of the outer ring portion 111c is changed.
  • a method of changing is also conceivable.
  • FIG. 9 is a perspective view showing another embodiment of the stator core.
  • the resin pillar 130 can be increased to two places by increasing the number of grooves 111e formed on the outer peripheral surface 111d to two.
  • FIG. 10 is a perspective view showing another embodiment of the stator core.
  • FIG. 11 is a perspective view showing another embodiment of the stator core.
  • FIG. 12 is a perspective view showing another embodiment of the stator core.
  • the pattern as shown in FIG. 10 in which the resin pillar 130 is provided on the dividing surface of the split-type stator core 111, the pattern as shown in FIG. 11 in which the resin pillar 130 is provided at the root of the tooth portion 111a, or A pattern as shown in FIG. 12 in which a resin pillar 130 is provided at the bottom of the slot is conceivable.
  • the resin column 130 is provided to cancel the force generated by the contraction of the insulator 114.
  • it is possible to offset the force that effectively contracts by devising not only the size of the resin pillar 130 but also the position and number of formation. It becomes.
  • the resin column 130 that generates a force that cancels the contracting force of the insulator 114, it is possible to make it difficult for the stator core 111 of the stator core unit 110 to be distorted. Since the distortion of the stator core unit 110 is less likely to occur, it becomes easy to ensure the roundness of the inner periphery of the stator 10, and the clearance between the rotor disposed on the inner periphery side (not shown) and the stator 10 is minimized. Can be set to the limit. Since the gap between the stator 10 and the rotor affects the output and performance of the motor using the stator 10, it is desirable that the gap can be narrowed.
  • the invention has been described according to the present embodiment, the invention is not limited to the embodiment, and by appropriately changing a part of the configuration without departing from the spirit of the invention. It can also be implemented.
  • the resin pillar 130 formed on the outer ring portion 111c and the tooth portion 111a is shown in FIGS. 7 and 9 to 12, but is not limited to this example because it is just an example. It does not prevent the resin column 130 from being formed in a position and size that can cancel the force generated in the insulator 114, and does not prevent the resin column 130 from being disposed in a place that does not hinder the magnetic circuit generated in the stator core 111. .
  • the stator core unit 110 is of a split type, but it does not prevent the resin pillar 130 from being provided on an annular stator core.
  • the materials exemplified in the present embodiment do not preclude changing in a range that does not deviate from the function and application.
  • the formation timing of the resin pillar 130 is made simultaneously with the insulator 114, it does not prevent any one from being formed first.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne un stator et un procédé de fabrication de stator évitant l'apparition de déformations dues à une contrainte apparaissant lors du façonnage d'un isolant. Le stator de l'invention est équipé : d'une bobine formée de l'enroulement d'un conducteur; d'un noyau de stator qui est formé de la stratification de feuilles d'acier électromagnétique, et qui est équipé d'une partie de dents faisant saillie depuis une partie annulaire externe vers un côté périphérique interne et dans lesquelles s'insère la bobine; et d'une partie moule en résine recouvrant de résine une section extrémité de bobine de la bobine insérée dans le noyau de stator. Une partie en retrait d'emboutissage est agencée sur les feuilles d'acier électromagnétique qui configurent le noyau de stator. Le noyau de stator est formé par connexion des feuilles d'acier électromagnétique entre elles à l'aide de la partie en retrait d'emboutissage. La partie annulaire externe d'un noyau de stator est équipée de parties rainures dans la direction de l'axe du noyau de stator et de façon parallèle. Les parties rainures sont équipées de colonnes de résine.
PCT/JP2010/052597 2010-02-22 2010-02-22 Stator et procédé de fabrication de stator WO2011101986A1 (fr)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013236499A (ja) * 2012-05-10 2013-11-21 Mitsubishi Electric Corp 電動機の積層鉄心
EP2882077A1 (fr) * 2013-12-04 2015-06-10 HILTI Aktiengesellschaft Bloc stator avec barrière d'écoulement
WO2016015869A1 (fr) * 2014-07-30 2016-02-04 Kienle + Spiess Gmbh Paquet de lamelles et procédé de fabrication de celui-ci
JP2016073109A (ja) * 2014-09-30 2016-05-09 株式会社三井ハイテック 積層鉄心及びその製造方法
EP2940831A4 (fr) * 2012-12-28 2016-07-27 Top Co Ltd Machine rotative et véhicule électrique
EP3139474A1 (fr) * 2015-09-02 2017-03-08 Siemens Aktiengesellschaft Machine electrique et procede de fonctionnement d'une telle machine electrique et procede de fabrication
US9824806B2 (en) 2012-08-21 2017-11-21 Kabushiki Kaisha Yaskawa Denki Coil, rotating electrical machine, and method of manufacturing coil
CN107975449A (zh) * 2016-10-21 2018-05-01 株式会社电装 电磁致动器
JP2020512805A (ja) * 2017-03-28 2020-04-23 ジェネシス ロボティクス アンド モーション テクノロジーズ カナダ アンリミテッド ライアビリティ カンパニー 波形固定子
CN111183568A (zh) * 2017-10-12 2020-05-19 大金工业株式会社 定子、马达和压缩机

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JP2006223076A (ja) * 2005-02-14 2006-08-24 Toshiba Corp アウターロータ及びその製造方法
JP2008199806A (ja) * 2007-02-14 2008-08-28 Yaskawa Electric Corp モールドステータとその製造方法およびモールドモータ
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JPH0690550A (ja) * 1992-09-07 1994-03-29 Yaskawa Electric Corp 電気機器用積層鉄心の製造方法
JPH11341714A (ja) * 1998-05-28 1999-12-10 Toshiba Corp モータのステータ
JP2000134832A (ja) * 1998-10-28 2000-05-12 Toshiba Corp 電動機の固定子
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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013236499A (ja) * 2012-05-10 2013-11-21 Mitsubishi Electric Corp 電動機の積層鉄心
US9824806B2 (en) 2012-08-21 2017-11-21 Kabushiki Kaisha Yaskawa Denki Coil, rotating electrical machine, and method of manufacturing coil
EP2889988B1 (fr) * 2012-08-21 2021-03-03 Kabushiki Kaisha Yaskawa Denki Bobine, machine électrique tournante, et procédé de fabrication de bobine
EP2940831A4 (fr) * 2012-12-28 2016-07-27 Top Co Ltd Machine rotative et véhicule électrique
US10186916B2 (en) 2012-12-28 2019-01-22 Top Co., Ltd Rotary machine and electric vehicle
EP2882077A1 (fr) * 2013-12-04 2015-06-10 HILTI Aktiengesellschaft Bloc stator avec barrière d'écoulement
WO2015082373A3 (fr) * 2013-12-04 2015-11-19 Hilti Aktiengesellschaft Noyau de stator formant barrière à l'écoulement
US10720802B2 (en) 2014-07-30 2020-07-21 Kienle + Spiess Gmbh Laminated core and method for producing same
JP2017521994A (ja) * 2014-07-30 2017-08-03 キーンレ ウント シュピース ゲーエムベーハー 積層鉄心およびその製造方法
WO2016015869A1 (fr) * 2014-07-30 2016-02-04 Kienle + Spiess Gmbh Paquet de lamelles et procédé de fabrication de celui-ci
JP2022153579A (ja) * 2014-07-30 2022-10-12 キーンレ ウント シュピース ゲーエムベーハー 積層鉄心の製造方法
JP7540117B2 (ja) 2014-07-30 2024-08-27 ファインツール インターナショナル ホールディング アーゲー 積層鉄心の製造方法
JP2016073109A (ja) * 2014-09-30 2016-05-09 株式会社三井ハイテック 積層鉄心及びその製造方法
WO2017036745A1 (fr) * 2015-09-02 2017-03-09 Siemens Aktiengesellschaft Machine électrique et procédé de fonctionnement d'une machine électrique de ce type ainsi que procédé de fabrication
EP3139474A1 (fr) * 2015-09-02 2017-03-08 Siemens Aktiengesellschaft Machine electrique et procede de fonctionnement d'une telle machine electrique et procede de fabrication
US10277089B2 (en) 2015-09-02 2019-04-30 Siemens Aktiengesellschaft Electric machine, method for operating such an electric machine, and production method
CN107975449A (zh) * 2016-10-21 2018-05-01 株式会社电装 电磁致动器
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