EP2792054A1 - Moteur electrique - Google Patents

Moteur electrique

Info

Publication number
EP2792054A1
EP2792054A1 EP12707269.2A EP12707269A EP2792054A1 EP 2792054 A1 EP2792054 A1 EP 2792054A1 EP 12707269 A EP12707269 A EP 12707269A EP 2792054 A1 EP2792054 A1 EP 2792054A1
Authority
EP
European Patent Office
Prior art keywords
stator
coils
permanent magnets
electrical machine
radial direction
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP12707269.2A
Other languages
German (de)
English (en)
Inventor
Martin Hoffmann
Gerhard Huth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP2792054A1 publication Critical patent/EP2792054A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • 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
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • 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
    • H02K3/47—Air-gap windings, i.e. iron-free windings
    • 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
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present invention relates to an electric machine having a rotor which has a plurality of permanent magnets which are arranged along a circumferential direction and a stator arrangement having a winding arrangement which surrounds the permanent magnets at least in regions.
  • Electric machines in the form of small drives which have a low energy consumption, are becoming increasingly important.
  • small drives for example, small pump and fan drives in Au ⁇ tomatmaschinestechnikn.
  • small drives are preferably used in medical technology.
  • the pro ⁇ project planning of small drives is usually for the maximum occurring drive parameters.
  • these small drives are operated in the so-called part-load range.
  • the drive function is integrated directly into the process in the sense of a mechatronic system.
  • the elekt ⁇ innovative machine is in this case an integrated installation component.
  • Small drives be designed to be variable in speed.
  • the drive can for example be formed Converter-fed and have a voltage intermediate circuit with a pulse inverter on ⁇ .
  • a DC voltage source for example a battery.
  • electrical machines are desirable, which can be ⁇ provide a high torque and at the same time have a low Ge ⁇ weight, high energy efficiency, low heating and high smoothness.
  • today usually permanent-magnet AC servomotors are used in conjunction with a pulse converter.
  • the stators are usually designed with a wound laminated core, so that with increasing speed Magneti ⁇ s istszele or iron losses increase dominant. Be ⁇ Sonder at partial load lead the virtually load-independent iron losses to a significant deterioration in energy efficiency.
  • the active parts of such electrical machines usually comprise components made of iron, which represent an undesirable weight component and which can lead to cogging torques.
  • the rotor has a plurality of Permanentmag ⁇ Neten, which are arranged in the circumferential direction.
  • the stator has a winding arrangement which surrounds the permanent magnets at least in regions.
  • the stator has, for example, U-shaped bent coils.
  • a production of these coils is very expensive, especially for small rotor diameters.
  • the electric machine comprises a Ro ⁇ gate having a plurality of permanent magnets disposed along a circumferential direction, a statora ⁇ UTHORISATION with a coil arrangement which surrounds the permanent magnet at least partially, wherein the Statoranord ⁇ voltage a first stator having a plurality of windings and wherein the stator arrangement comprises a second stator, the windings of the first and the second stator are each formed as frame-shaped coils, the coils of the first stator are arranged in the radial direction outside the permanent magnets, the coils of the second stator in the radial direction are arranged inside the permanent ⁇ magnets, the coils are arranged along its winding axis in the radial direction and the Permanentmag ⁇ Neten along their magnetization direction are arranged in the radial direction.
  • the electric machine includes a rotor in which the permanent magnets are arranged side by side along the circumferential direction of the electric machine.
  • the rotor can be coupled to a corresponding shaft, at which the torque of the electric machine can be tapped.
  • the electric machine comprises a first, outer stator and a second, inner stator.
  • the first and the second stator comprise respective windings in the form of coils, which are each arranged adjacent to each other in the circumferential direction.
  • the permanent magne ⁇ th in the rotor from two sides are surrounded by coils.
  • a high magnetic force can be provided.
  • the electric machine can also be designed such that it has only one outer stator or an inner stator. having stator with the associated coils.
  • the electric machine can in addition to the Spu ⁇ len of the first and second stator coils further alswei ⁇ sen that the permanent magnet at least partially converted ⁇ ben.
  • the coils of the first and second stator essentially have a frame-shaped form.
  • the coils have passage openings along which the coils are arranged in the radial direction of the electric machine.
  • These coils can ge ⁇ be fabricated and arranged in the electrical machine as a separate component easy.
  • This type of coils is particularly suitable for the use of electrical machines with a small diameter or small electric drives.
  • the electric machine needs no grooves and no iron yoke.
  • no frequency-dependent magnetization losses occur.
  • no cogging torques occur due to the fluctuation of the magnetic conductivity of the stator.
  • the permanent magnets are arranged such that the magnetization directions of juxtaposed permanent magnets are directed in the opposite direction in the radial direction.
  • the magnetization direction of the respective permanent magnets extends from their south pole to their north pole.
  • the coils have a greater spatial extent in a direction perpendicular to the winding axis than in the direction of the winding axis.
  • the coils are designed in particular as flat coils.
  • the coils have in the direction perpendicular to the winding axis the greatest possible spatial Aus ⁇ expansion.
  • an increased force ⁇ effect can be generated on the permanent magnet by the coils.
  • the coils should be designed such that the ratio of the electrical power introduced into the winding to the mechanical power generated by the electrical machine is reduced.
  • the higher electromagnetic utilization can produce higher force and torque at a constant current density. In this way, a high torque can be provided with the electrical machine.
  • the coils in the first and / or in the second stator have a curvature along the circumferential direction of the electric machine.
  • the coils of the second stator can have a greater curvature in the circumferential direction than the coils of the first stator. Due to the curvature of the coils in the circumferential direction, the electric field of the coils and the magnetic field, which is generated by the permanent magnets of the rotor, perpendicular zueinan ⁇ arranged. Thus, a very high force component in the circumferential direction can be generated, whereby a high torque can be generated with the electric machine.
  • a number of turns and / or a cross-sectional area of a wire of the turns of the coils in the first stator differ from a number of turns and / or a cross-sectional area of a wire of the turns of the coils in the second stator.
  • the electric field generated by the coils can be easily adjusted.
  • the number of turns and / or the wire cross-section of the coils in the first and second stator can be adapted to the electrical current applied to the coil.
  • the permanent magnets are substantially in the form of a hollow cylinder segment.
  • the electric ⁇ cal machine is designed as a linear motor, cuboid permanent magnets can be used. Permanent magnets, which have such a geometry that can be produced simply and kos ⁇ -effectively. Also, the permanent magnets ⁇ may have a cylindrical shape. In addition, it is conceivable that the permanent magnets have a curvature in the circumferential direction. This allows a simple and cost- effective production of the electrical machine.
  • the number of coils in the first and second stator is a multiple of three.
  • a coil of the first stator and a coil of the second stator which are arranged in alignment with one another in the radial direction of the electric machine, are electrically connected in series.
  • a coil of the first stator may be electrically connected in parallel with a coil of the second stator, so that identical induced voltages result in the first and in the second stator.
  • the direction of the electric current which is directed in a coil of the first stator and in a coil of the second stator, which are assigned to the same winding segment, directed in opposite directions.
  • the coils can be easily operated with a three-phase power supply.
  • the first and / or the second stator has a carrier structure with a plurality of carrier elements, which are designed to wind up the coils.
  • the support elements is a kind of winding aid felicitge ⁇ provides.
  • the support structure and the support members of an electrically insulating material, in particular egg ⁇ NEN material which has a relative permeability of one on ⁇ are made. Due to the electrically insulating material, around which the coils or the windings are arranged, no eddy current losses are caused. Thus, a particular ⁇ DERS energy-efficient operation of the electrical machine can be made possible.
  • FIG. 1 shows a schematic perspective view of an arrangement of permanent magnets of a rotor and of coils of a first stator of an electrical machine
  • FIG 6 is a side view of the second stator and the Ro ⁇ tors of the electrical machine
  • the permanent magnets 16 have a cuboid shape.
  • the permanent magnets 16 are arranged side by side along the circumferential direction 22.
  • the permanent magnets 16 are arranged along their magnetization direction 40, which extends from the south pole S to the north pole N, along the radial direction 24.
  • the permanent magnets 16 are arranged such that the magnetization directions are directed oppositely 40 ne ⁇ by side arranged permanent magnets 16th
  • the coils 20 of the first stator have a substantially frame-like shape.
  • the coils 20 are arranged in Radia ⁇ ler direction 24 outboard of the permanent magnet 16.
  • the coils 20 are arranged such that their winding axes 26 are arranged in the radial direction 24 of the electric machine.
  • FIG. 2 shows the arrangement of permanent magnets 16 and coils 20 in a development.
  • the electric machine is so formed from ⁇ that the number N * of the coil 20 is a multiple of the number three.
  • the coils 20 can be connected to a dreipha ⁇ sigen power supply.
  • an electric machine with the base pole number 2p is formed. The following rules apply:
  • the number of frame coils N * must be divisible by three:
  • n For the quotient of the constant p / n, it must hold that p / n is an integer, in which case it must hold that n ⁇ 3, 6, 9 ⁇ ⁇ ⁇ ⁇ »If z is an even number, then every winding phase exists from 2p / n coil groups each with z / 2 frame coils.
  • FIG. 1 and 2 respectively the arrangement of the permanent magnets 16 and the coils 20 is shown by an electric machine having a first, outer stator.
  • the electric machine preferably also comprises a second, internal stator, in which the coils are arranged in the radial direction 24 on the inside of the permanent magnet 16.
  • the electric machine 10 comprises a rotor 12, which is mechanically connected to a shaft 30. Moreover, the rotor 12 includes a plurality of permanent magnets 16 disposed on a radial disk and an axial hollow cylinder. Furthermore, the electric machine 10 comprises a first
  • Stator 14 having a plurality of coils 20.
  • the electric machine comprises a second stator 18 having a plurality of coils 28.
  • the coils 20 of the first stator 14 and the coils 28 of the second stator have a curvature in the circumferential direction 22 of the electric machine 10 on.
  • the permanent magnets may have a curvature along the circumferential direction 22.
  • 4 shows the electrical machine 10 according to FIG 3 in a plan view. In this case, the rotor 12 of the electric machine can be seen, which has ten permanent magnets 16.
  • the first stator 14, which has six coils 20, is shown.
  • the coils 20 of the first stator 14 are arranged in the radial direction 24 of the electric machine 10 outside of the permanent magnets 16 of the rotor 12.
  • the second stator 18 comprises six coils 28.
  • the coils 28 of the second stator 18 are arranged in the radial direction 24 inside the rotor 12.
  • FIG. 5 shows a perspective view of the electric machine 10 from the underside.
  • the coils 20 of the first stator 14 can be seen.
  • 6 shows a partial view of the electric machine 10 without the first stator 14.
  • the rotor 12 of the electric machine 10 with the permanent magnet 16 can be seen.
  • the coils 28 of the second stator 14 are shown.
  • the coils 20, 28 each have a frame-shaped in Wesent ⁇ union structure.
  • the coils 20, 28 are made by a wound wire and thus form a corresponding air-core coil.
  • the coils have a smaller spatial extent along the winding axis 26 than in a direction 32 which runs perpendicular to the winding axis 26.
  • the coils 20, 28 have a flat design.
  • the coils 20 are intended to 28 be formed so that the ratio of the electric power, which is introduced in the winding, is reduced to the mecha ⁇ African performance.
  • the coils 20, 28 are curved along the circumferential direction of the electric machine 10. As shown in FIG. 7, the number of turns of the coils 20, 28 may differ.
  • the coils 28 of the second stator 18 have a smaller number of windings on in this case, as the coils 20 of the first stator 14. In this case, the cross-section ⁇ surface of the wires of the coils 20 of the first stator 14 as compared to the cross-sectional area of the wires of the coils 28 be formed differently in the second stator 18.
  • the support structure 34 has a plurality of support elements 36.
  • the carrier elements 36 are formed by a projection in the radial direction, which has a two-sided recess 38. In this recess 38, the wire can be introduced and thus the respective coils 28 are wound.
  • the carrier structure 34 and the carrier elements 36 are preferably formed from an electrically insulating material, which in particular has a relative permeability of one.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Windings For Motors And Generators (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L'invention concerne un moteur électrique (10) comprenant un rotor (12) qui présente une pluralité d'aimants permanents (16) disposés le long d'une direction circonférentielle (22), un ensemble statorique doté d'un ensemble enroulement qui entoure au mois par endroits les aimants permanents (16), l'ensemble statorique présentant un premier stator (14) doté d'une pluralité d'enroulements, l'ensemble statorique présentant un deuxième stator (18), les enroulements du premier et du deuxième stator (14, 18) étant respectivement conçus comme des bobines (20, 28) en forme de cadre, les bobines (20) du premier stator (14) étant disposées dans la direction radiale (24) à l'extérieur des aimants permanents (16), les bobines (28) du deuxième stator (18) étant disposées dans la direction radiale (24) à l'intérieur des aimants permanents (16), et les bobines (20, 28) étant disposées dans la direction radiale (24) le long de leur axe d'enroulement (26). et les aimants permanents (16) étant disposés dans la direction radiale (24) le long de leur axe de magnétisation (40).
EP12707269.2A 2012-02-28 2012-02-28 Moteur electrique Withdrawn EP2792054A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/053342 WO2013127436A1 (fr) 2012-02-28 2012-02-28 Moteur electrique

Publications (1)

Publication Number Publication Date
EP2792054A1 true EP2792054A1 (fr) 2014-10-22

Family

ID=45808830

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12707269.2A Withdrawn EP2792054A1 (fr) 2012-02-28 2012-02-28 Moteur electrique

Country Status (6)

Country Link
US (1) US9806588B2 (fr)
EP (1) EP2792054A1 (fr)
JP (1) JP2015510751A (fr)
KR (1) KR101682408B1 (fr)
CN (1) CN104137394A (fr)
WO (1) WO2013127436A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3023430B1 (fr) * 2014-07-04 2017-12-01 Whylot Moteur electromagnetique polyentrefers et a flux magnetique radial a rotor encadre par deux stators avec diminution du couple de detente
JP6264409B1 (ja) * 2016-08-16 2018-01-24 マツダ株式会社 回転電機
WO2018056561A1 (fr) * 2016-09-23 2018-03-29 탁승호 Moteur sans arrêt
KR102598039B1 (ko) * 2021-09-02 2023-11-03 연세대학교 산학협력단 자기 베어링 기능을 가지고, 회전 운동 및 직선 운동이 가능한 6자유도 능동제어 모터 장치 및 이를 구비하는 모터 시스템

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2085099A (en) * 1933-11-11 1937-06-29 Westinghouse Electric & Mfg Co Low loss armature coil
US2840786A (en) * 1952-01-19 1958-06-24 Thompson Prod Inc Coaxial switch
JPS5652769Y2 (fr) 1972-07-27 1981-12-09
JPS5120514A (ja) * 1974-08-12 1976-02-18 Seikosha Kk Denjisochi
JPS63257445A (ja) * 1987-04-14 1988-10-25 Canon Inc ３相ブラシレスモ−タ
US5081388A (en) * 1990-07-24 1992-01-14 Chen Shew Nen Magnetic induction motor
JPH05122880A (ja) * 1991-10-28 1993-05-18 Olympus Optical Co Ltd 回転電機の電機子
JPH06165450A (ja) * 1992-11-20 1994-06-10 Mitsubishi Electric Corp スピンドルモータ
DE4414527C1 (de) * 1994-04-26 1995-08-31 Orto Holding Ag Elektronisch kommutierte Gleichstrommaschine
US5955806A (en) * 1995-12-01 1999-09-21 Raytheon Company Torque motor with combined shield ring and rotor ring
JPH09322452A (ja) 1996-05-24 1997-12-12 Sankyo Seiki Mfg Co Ltd 回転電機
KR19980020134A (ko) 1996-09-05 1998-06-25 김광호 플렛타입 모터
JPH11122848A (ja) 1997-10-15 1999-04-30 Toshiba Ave Co Ltd モータのステータ及びモータ
JP2002335658A (ja) * 2001-05-08 2002-11-22 Nsk Ltd モータ
JP3802785B2 (ja) * 2001-09-03 2006-07-26 建準電機工業股▲分▼有限公司 直流モーター
JP2003153516A (ja) * 2001-11-12 2003-05-23 Ricoh Co Ltd 直流ブラシレスモータ、光偏向器、光走査装置及び画像形成装置
JP4466098B2 (ja) * 2004-02-03 2010-05-26 日立工機株式会社 電動モータ、それを備える電動工具及び電動モータの製造方法
US7126309B1 (en) 2004-05-18 2006-10-24 Seiko Epson Corporation Motor
US7501733B2 (en) * 2004-05-18 2009-03-10 Seiko Epson Corporation Electric machine
US7723888B2 (en) * 2004-05-25 2010-05-25 Marko Petek Synchronous electromechanical transformer
SI21830A (sl) * 2004-05-25 2005-12-31 Marko Petek Sinhronski elektromehanski pretvornik
US7598648B2 (en) * 2005-12-05 2009-10-06 Emerson Electric Co. 2/6 pole single-phase induction motor having shared windings
DE102006022773A1 (de) 2006-05-16 2007-11-22 Technische Universität Kaiserslautern Linearmotor
JP2008054419A (ja) 2006-08-24 2008-03-06 Mazda Motor Corp モータ制御システム
JP4279326B2 (ja) * 2007-04-04 2009-06-17 本田技研工業株式会社 電動機の制御装置
DE102008060896B4 (de) * 2008-08-11 2017-11-02 Hanning Elektro-Werke Gmbh & Co. Kg Spulentragvorrichtung
CN101752929B (zh) * 2008-12-09 2014-04-09 汉宁电气股份两合公司 线圈承载装置和制造方法
JPWO2011077599A1 (ja) * 2009-12-24 2013-05-02 一博 池田 発電機、自己発電型モーターおよびそれを用いた電力供給システム
WO2011096888A1 (fr) * 2010-02-02 2011-08-11 Akribis Systems Pte Ltd Moteurs à aimant permanent sans contrefer d'aimant
DE102010039871A1 (de) * 2010-08-27 2012-03-01 Siemens Aktiengesellschaft Aktivteil einer elektrischen Maschine mit schrägen Spulen im Wickelkopfbereich
CN101982930B (zh) 2010-11-10 2012-07-11 哈尔滨工业大学 高效率三相无槽永磁电机

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013127436A1 *

Also Published As

Publication number Publication date
CN104137394A (zh) 2014-11-05
KR20140140056A (ko) 2014-12-08
US20150061451A1 (en) 2015-03-05
JP2015510751A (ja) 2015-04-09
KR101682408B1 (ko) 2016-12-12
US9806588B2 (en) 2017-10-31
WO2013127436A1 (fr) 2013-09-06

Similar Documents

Publication Publication Date Title
DE102007007578B4 (de) Elektrische Maschine
EP1997214B1 (fr) Machine électrique notamment générateur
DE112006002546B4 (de) Elektromotor mit asymmetrischen Polen
DE112013000618T5 (de) Rotierende elektrische Maschine und mit der rotierenden elektrischen Maschine ausgestattetes Fahrzeug
DE202010013455U1 (de) Elektrische Maschine
EP3545610B1 (fr) Machine synchrone à démultiplication magnétique de champ tournant et concentration de flux
DE102012202735B4 (de) Dynamoelektrische Maschine mit einer Einschichtbruchlochwicklung
DE102012219174A1 (de) Drehende elektrische Maschine
EP1916754A2 (fr) Machine à flux transversal et son procédé de fabrication
DE102010032764A1 (de) Elektrische Maschine und Stator für dieselbe
DE102016216181A1 (de) Rotierende elektrische Maschine
DE202011051193U1 (de) Hochwirksamer Elektromotor mit hoher Ausgangsleistungsdichte
WO2013127435A1 (fr) Moteur électrique
DE3730615A1 (de) Elektrische maschine mit permanentmagnet-erregung
EP2792054A1 (fr) Moteur electrique
WO2020089110A1 (fr) Machine électrique et procédé pour faire fonctionner cette machine électrique
DE3320805C2 (fr)
DE102018123706A1 (de) Rotor für eine Synchronmaschine
DE102016219826B4 (de) Rotierende elektrische Maschine
EP2319164A2 (fr) Rotor pour une machine électrique à couple de détente réduit
DE202023100266U1 (de) Dynamisch rekonfigurierbare Synchronmotoren und Generatoren
DE60307466T2 (de) Elektrischer Synchronmotor mit konzentrierter Wicklung sowie Verfahren zum Entwickeln desselben
DE102010050545A9 (de) Wechselstrom-Generator
DE102014200394A1 (de) Reduzierung des Rastmoments und der Drehmomentwelligkeit eines elektrisch erregten Generators durch alternative Verlängerung von Rotorpolschuhen
DE202011051632U1 (de) Wirksamer und leistungsfähiger Elektromotor mit einem integrierten Generator

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140627

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

17Q First examination report despatched

Effective date: 20180727

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20190903