EP2997644A2 - Rotor pour machine électromécanique - Google Patents

Rotor pour machine électromécanique

Info

Publication number
EP2997644A2
EP2997644A2 EP14725004.7A EP14725004A EP2997644A2 EP 2997644 A2 EP2997644 A2 EP 2997644A2 EP 14725004 A EP14725004 A EP 14725004A EP 2997644 A2 EP2997644 A2 EP 2997644A2
Authority
EP
European Patent Office
Prior art keywords
rotor
permanent magnets
stator
permanent magnet
rotor frame
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Withdrawn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
EP14725004.7A
Other languages
German (de)
English (en)
Inventor
Martin Weinmann
Nicola-Valeriu Olarescu
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.)
Diehl AKO Stiftung and Co KG
Original Assignee
Diehl AKO Stiftung and Co KG
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 Diehl AKO Stiftung and Co KG filed Critical Diehl AKO Stiftung and Co KG
Publication of EP2997644A2 publication Critical patent/EP2997644A2/fr
Withdrawn legal-status Critical Current

Links

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
    • H02K1/22—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
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets

Definitions

  • the invention relates to a rotor for an electromechanical machine, which is designed for rotation about an axis with respect to a stator, comprising a rotor frame and permanent magnets, wherein the permanent magnets in pockets, which are arranged in the azimuthal direction in the rotor frame, are introduced, wherein the permanent magnets in azimuthal direction are magnetized, and wherein each two adjacent permanent magnets, each with the same pole face each other.
  • the invention further relates to an electromechanical machine with such a rotor.
  • a cylindrical rotor with spoke-like permanent magnets is driven by an electromechanical field generated at a stator.
  • the rotor comprises a rotor frame, which is usually made of an axially stacked laminated core.
  • the usually cuboid permanent magnets are usually used with a magnetization in the azimuthal direction in axially continuous, spoke-like circumferential recesses in the rotor frame.
  • two adjacent permanent magnets are each magnetized opposite. In the circumferential direction, therefore, in each case the same magnetic poles of each two magnets facing each other, which forms a rotor pole corresponding polarity in a circular sector of the rotor frame between two permanent magnets.
  • a pole On the side of the stator facing the rotor, a number of electromechanical poles are arranged rotationally symmetrically with respect to the axis of rotation of the rotor.
  • a pole usually comprises a radial aligned soft iron core, around which a defined number of coil turns of conductor wire is wound, and a radially facing the rotor soft magnetic pole piece, which can be firmly joined to the soft iron core or made in one piece.
  • the pole pieces are each separated from the rotor by a thin air gap.
  • the individual stator magnets can be electronically controlled or commutated by a power supply. In a corresponding driving a stator magnet is generated by the current flow of the coil winding in the soft iron core and thus in the pole piece, a magnetic flux whose field lines are at least partially aligned radially.
  • the magnetic flux generated by a driven stator magnet in the region of the rotor interacts with the magnetic flux of the individual rotor poles generated by the permanent magnets; This is called a flux linkage.
  • the drive of the rotor via a suitable frequency with respect to the change in the polarity of the stator magnet and thus their respective attractive or repulsive interaction with the voltage applied to the pole shoes rotor poles, the flux linkage, in particular over the pole pieces and the rotor separating air gap away, an important Target for efficiency and the
  • Performance of the electric motor is. If the maximum torque, the maximum rotational frequency or the maximum power of an electric motor is to be increased, an increase in the magnetic flux linkage, ie the effective magnetic flux, is necessary.
  • the possible dimensions of an electromechanical machine are usually limited by a higher-level device in which the electromechanical machine is used.
  • the radius of the rotor can often be assumed to be unchangeable size for reasons of structural compactness.
  • a possible axial extension of the rotor and the pole pieces has the disadvantage, with a constant number of turns of the coil windings each to extend the current-carrying conductor wire, whereby the ohmic resistance of the individual coil turns increases, resulting in power losses.
  • a higher ohmic resistance in the flow of current releases more heat, which is transmitted to the respective soft iron core and thereby adversely affects its magnetic properties.
  • a possible increase in the number of turns of the individual coil turns at constant axial length of the pole pieces is due to the extension of the respective conductor wire and the concomitant increase in the ohmic resistance as it were.
  • the inductance of the coil increases, which can lead to an adverse mutual induction.
  • the magnetic flux of field lines which connect the two opposite poles of a magnet together, can not contribute to the flux linkage between the rotor field and the stator field due to the field closure; These losses should be limited as far as possible.
  • the invention has for its object to provide a rotor for an electromechanical machine, which provides the highest possible effective magnetic flux available. Further, the invention has for its object to provide an advantageous application for such a rotor.
  • the former object is for a rotor for an electromechanical machine, which is designed for rotation about an axis with respect to a stator, comprising a rotor frame and permanent magnets, wherein the permanent magnets in pockets which are arranged in the azimuthal direction in the rotor frame, are introduced Permanent magnets are magnetized in the azimuthal direction, and wherein each two adjacent permanent magnets, each with the same pole face each other, according to the invention achieved in that the permanent magnets protrude in the axial direction over the rotor frame.
  • stator poles At the stator of the electromechanical machine in this case a number of stator poles is provided, wherein a stator pole may be formed as a pole of an electromagnet or as a pole of an electric induction generator.
  • a stator pole expediently comprises a pole shoe, which faces the rotor in the radial direction.
  • the invention is based on the fact that the magnetic flux density at a sufficiently smooth surface of a permanent magnet, which is approximately perpendicular to the azimuthal direction and thus magnetization, as substantially, that is, up to negligible edge effects, regardless of the axial Length of the
  • Permanent magnets is to be assumed, since the permanent magnets can be assumed within the reasonable possibilities as magnetized to saturation.
  • a sufficiently smooth surface should be understood as meaning, in particular, an edge-free and uniformly either convex or concave or flat surface and approximately perpendicular to the azimuthal direction such that the greatest contribution of the surface normals in the azimuthal direction takes place at each point of the surface.
  • An axial extension of a permanent magnet increases compared to an axially flush with the rotor frame final permanent magnet to the direction of the magnetization approximately perpendicular surface.
  • the magnetic flux is amplified. This creates, apart from the permanent magnets themselves, no additional material.
  • the additional axial space requirement for an axial projection is to be set in the low two-digit percentage range based on the axial length of the rotor frame and thus does not represent a decisive obstacle to a compact design.
  • the invention recognizes that due to the high reluctance of the air surrounding the rotor for the magnetic field, which is generated by the axially projecting portions of the permanent magnets, the termination of the field lines on the rotor frame and components of the stator, which in the vicinity of Rotors are arranged, is searched. Especially with a
  • Rotor frame made of easily magnetizable material, it is energetically unfavorable at an axially projecting portion of a permanent magnet to close the field lines from one azimuthal side to opposite polarity magnetized other side over the surrounding air, since the reluctance is higher there by several orders of magnitude than in the rotor frame.
  • Preferred here is the
  • Rotor frame made of ferromagnetic, in particular made of soft magnetic material.
  • rotor poles each having the same polarity of the magnetization of the mutually facing surfaces of each two adjacent permanent magnets, which bound such a rotor pole in the circumferential direction, form in the circular ring sectors between the individual permanent magnets.
  • a described amplification of the magnetic flux in the rotor by the axial projection of two adjacent permanent magnets thus leads to an amplification of the magnetic flux in the corresponding rotor pole.
  • This flux which is amplified in comparison to axially flush permanent magnets, leads in the region of the rotor pole to an increased magnetic flux density at a lateral surface of the rotor frame facing the stator poles.
  • the electromechanical machine is operated as a motor, and correspondingly a stator pole as an electromagnet with approximately radially directed field lines at the radial boundary surface of the stator pole, an axial projection of the permanent magnets results due to the increased flux density at the stator-side lateral surface of the rotor frame in otherwise constant parameters Area of the rotor poles to an increased effective flux between a rotor and a stator pole or for improved Flußverkettung.
  • an electrical induction generator of the stator is penetrated by a stronger magnetic flux, which leads to a higher induction voltage.
  • a third step it is recognized that in case of a possible short circuit of the field of a permanent magnet over parts of the rotor frame, the rotor frame is easier to magnetically saturate due to the resulting from the axial projection of the permanent magnets increased flow than without axial projection. As a result, possible efficiency losses of the electromechanical machine are reduced.
  • a soft magnetic material is attached to the axial boundary surfaces of the rotor frame between the axially projecting permanent magnets.
  • the material for the rotor frame is often more expensive than a soft magnetic material, so that a filling of the axial supernatant with soft magnetic material can lead to an overall reduction in production costs.
  • the first object is for a rotor for an electromechanical machine, which is designed for rotation about an axis with respect to a stator, comprising a rotor frame and permanent magnets, wherein the permanent magnets in pockets, which are arranged in the azimuthal direction in the rotor frame, are introduced the permanent magnets are magnetized in the azimuthal direction, and wherein each two adjacent permanent magnets, each with the same pole face each other, according to the invention achieved in that a number of permanent magnets each having an orthogonal to the axis cross-section, which is at least partially trapezoidal deviating from a rectangular shape.
  • the edge length on the radially inner side represents a limiting factor for constructional reasons. Since the permanent magnets can be assumed to be largely magnetized to saturation, a trapezoidal broadening of a permanent magnet radially outwards with constant magnetization due to the larger volume leads to a larger magnetic moment in the azimuthal direction.
  • the electromechanical machine is operated as a motor, and correspondingly a stator pole as an electromagnet with field lines oriented approximately radially at the radial boundary surface of the stator pole, a trapezoidal azimuthal widening of the permanent magnets results due to the thereby increased magnetic moment in the azimuthal direction with otherwise constant parameters an increased torque around the axis of rotation.
  • the invention recognizes that a section-wise trapezoidal shape, in particular a trapezoidal taper on the radially outer
  • the holder of the permanent magnet simplifies, since by a taper at the radially outer end a pocket for a permanent magnet in the rotor frame requires no additional retaining lugs for its radial securing, but can absorb centrifugal forces occurring on rotation of the rotor to a permanent magnet by positive engagement.
  • the saving of further components for the radial securing of the permanent magnets enables a simpler and less expensive production of the rotor frame.
  • a radially outwardly widened or radially inwardly tapered trapezoidal shape of the permanent magnets compared to a Rectangular shape has a shorter edge length at the radially inner end result, and generally azimuthally has less space in the region of the radially inner end of the rotor frame. This widens, compared to a rectangular shape, the circular ring sector between two
  • Permanent magnets in this area which also opens the option to use the space gained to another structural change of the rotor frame in this area, which is to suppress the short circuit of the field of a permanent magnet on the rotor frame in this area.
  • the initially stated object is achieved by a combination of the aforementioned inventive solutions. Accordingly, it is provided in a further inventive solution that the permanent magnets protrude in the axial direction over the rotor frame, and that a number of permanent magnets in each case one orthogonal to the axis
  • Cross-section which is at least partially trapezoidal deviating from a rectangular shape.
  • the rotor frame is made of a stacked in the axial direction laminated core. This suppresses the rotation of the rotor
  • the individual layers of the laminated core are electrically isolated from each other, for example by a paint.
  • sintered ferrite magnets and / or plastic-bonded permanent magnets are used as permanent magnets.
  • Such magnets have a relatively high magnetization with respect to the acquisition costs, which has a favorable effect on the production costs.
  • an edge of at least one permanent magnet is chamfered.
  • the holder of the permanent magnet in the rotor frame can be simplified by a part of the Rotor frame or a firmly attached to the rotor frame material fills the chamfer complementary.
  • the permanent magnets are pressed into the rotor frame and / or cast. This leads to a simple and fast production process.
  • At least one axially projecting beyond the rotor frame permanent magnet at least one of its axially projecting side surfaces of one of an axial end plate of the
  • the fold exerts a force on the at least one permanent magnet on the side surface and thereby helps to keep it in its position.
  • This is preferably a side surface of the at least one permanent magnet, which is approximately perpendicular to the azimuthal direction.
  • the at least one permanent magnet can abut against a further axially protruding side surface on a further axially projecting from an axial end plate of the laminated core bending.
  • the further axially projecting side surface of the permanent magnet is approximately perpendicular to the azimuthal direction, so that the two respective folds protrude axially from the end plate similar to a wing door and help to keep the permanent magnet azimuthal in its position.
  • one or each axially projecting fold of the axial end plate comprises a further fold, which rests on the axial end face of the respective permanent magnet.
  • the rotor frame has a respective recess in the radial direction on a boundary surface of at least one permanent magnet remote from the stator after assembly, such that each radial connecting line passes from a point of the at least one permanent magnet to a lateral surface of the rotor facing away from the stator the respective recess leads.
  • Such a recess impedes the short circuit of the magnetic field of the respective permanent magnet on the rotor frame, since the field from the north pole to the south pole of the permanent magnet must be closed around the recess, and thus less material of the rotor frame is available for short circuit, whereby the material at the same Residual flux density is rather magnetically saturable and thus a magnetization for short-circuit rejects easier than without recess.
  • the suppression of the short circuit thus reduces power losses, as the electromechanical machine is effectively more flux density of a permanent magnet available.
  • one or each recess preferably at least partially surrounds the respective permanent magnet at its azimuthal boundary surfaces in the radial direction. This effectively increases the recess and thus extends the distance to be traveled for the short circuit of the field of the respective permanent magnet in the material of the rotor frame while simultaneously reducing the available magnetizable material of the rotor frame. As a result, the short circuit of the field is further complicated, which increases the performance of the electromechanical machine.
  • a number of resilient brackets is arranged in the recess, which presses the respective permanent magnet radially in the direction of the stator. This helps keep the respective permanent magnet in position in the radial direction with as little material as possible, which could short the field of the permanent magnet.
  • the or each bracket can be made of the material of the rotor frame or of a dia- or paramagnetic material.
  • a number of gap-like recesses are provided in the rotor frame between two or two adjacent permanent magnets, which are formed into the region of a stator lateral surface of the rotor frame and which extend in the region of the stator lateral surface substantially in the radial direction.
  • the or each recess of the rotor frame is completely or partially filled with a dia- or paramagnetic filler, in particular with a plastic. This further enhances the concentration of magnetic flux of a rotor pole on the stator lateral surface.
  • the dia- or paramagnetic filler at at least one axial end of the rotor at least partially over a number of recesses and is used for balancing the rotor and / or has a shape of a fan blade on.
  • a fan may be formed, which can be used to cool a further arranged in the vicinity of the electromechanical machine device.
  • the second object is achieved by an electromechanical machine comprising a stator and a rotor of the type described above.
  • the advantages of the rotor and its developments can be analogously transmitted to the electromechanical machine.
  • FIG. 3 shows an oblique view of a rotor with trapezoidal permanent magnets around whose radially inner ends in the rotor frame wide recesses are made
  • FIG. 4 shows a plan view of a rotor with sections of trapezoidal permanent magnet
  • FIG. 5 is an oblique view of a rotor with partially chamfered permanent magnets, which are partially held by brackets, and
  • a rotor with Flußbarrieren which are filled with a filling material.
  • a rotor 1 is shown in the oblique view, in the rotor frame 2, a number of substantially cuboid permanent magnet 4 is introduced.
  • the permanent magnets 4 are arranged rotationally symmetrically in the rotor frame 2 with respect to an axis 5, which is provided as the axis of rotation of the rotor 1, and each have an axial projection 6 relative to the rotor frame 2.
  • inner recesses 8 and outer recesses 10 are provided in the rotor frame 2 on the permanent magnet.
  • Each two adjacent permanent magnets 4 are magnetized homopolar at the respective mutually facing side surfaces 12, so that in the annular sector 14 of the rotor frame 2 between the permanent magnets 4, a rotor pole 15 of the corresponding polarity is formed.
  • the rotor poles are held by thin webs 16 on an inner ring 18 of the rotor 1.
  • the rotor frame 2 is made of a laminated core 19 whose axial end plate 20 has axial folds 22, which at the azimuthal Side surfaces 24 of the axial projections 6 of the permanent magnets 4 abut.
  • the protruding from the axial end plate 20 of the laminated core 19 bends 22 have more folds 26 which rest on the axial end faces 28 of the permanent magnets 4.
  • Die Bantinen 22 Sind in der axialen Stirn vomus 28 der Permanentmagneten 4 anorg.
  • a projection 30, which rests against the axial projection of the inner radial end face 32 of the respective permanent magnet 4 is arranged on the respective radially inner side of each fold 22.
  • the axial overhang 6 of the permanent magnets 4 increases the available magnetic flux density. Due to the high magnetic
  • the inner recesses 8 and the outer recesses 10 reduce the short circuit of the field of a permanent magnet 4 over the
  • Rotor frame 2 On the inside, such a short circuit can only lead via a web 16 and the inner ring 18 of the rotor frame 2.
  • the web 16 is therefore preferably designed such that it can absorb all occurring on one of him with the inner ring 18 circular ring sector 14 occurring centrifugal forces in a rotation, but this is kept as narrow as possible, so that in the laminated core 19 at the web as quickly as possible a magnetic saturation occurs, which prevents another short circuit of the field.
  • the folds 22 simplify keeping a permanent magnet 4 azimuthally in position. This can in particular by a non-positive
  • a rotor 1 is shown with axially over the rotor frame 2 projecting permanent magnet 4 in the oblique view, wherein between the respective axial projection 6 of the permanent magnets 4 circular sectors with soft magnetic material 40 are arranged.
  • the permanent magnets 4 are in this case frictionally held by bracket 42, which each emanate from the web 18, in their position.
  • the soft magnetic material 40 is magnetized in this case, and contributes to the respective rotor pole 15 at.
  • it is usually cheaper than the laminated core 19, from which the rotor frame 2 is made total costs can be saved.
  • a rotor 1 is shown with trapezoidal permanent magnet 4 in the oblique view.
  • Rotor frame 2 in this case partially surround the respective permanent magnet 4 in the radial direction.
  • the short circuit of the field of a permanent magnet 4 is further complicated because it can lead to the radial inner side only via the extended web 16 to the rotor pole 15 and the inner ring 18.
  • the narrow elongated web 16 can transmit little magnetic flux here due to a slight magnetic saturation occurring, the short circuit of the field is difficult.
  • the permanent magnets 4 are frictionally held in position in the inner recess 8 by comb-like structures 64 which press against the radially inner end face 32.
  • the comb-like structures 64 are at a wedge-shaped area of the
  • Rotor frame 2 is formed, which is arranged between the recess 8 and trapezoidal permanent magnet 4.
  • a rotor 1 is shown in sections with trapezoidal permanent magnets 4 in sections, which widen radially outwardly trapezoidal first and taper to trapezoidal to the radially outer end. By this taper to the outside, the permanent magnets 4 are positively inserted in the rotor frame 2. Further retaining lugs or stirrups for azimuthal or radial fixation are eliminated.
  • a rotor 1 is shown with axially projecting permanent magnet 4 in the oblique view, which are each provided on the radially inner end face 32 in the axial direction with chamfers 44.
  • the permanent magnets 4 are in the inner recess 8 by brackets 42, each starting from the web 16 and press against the chamfer 44, and by bracket 46, which emanate from the inner ring 18 of the rotor frame 2 and press against the radially inner end face 32, frictionally in Position held.
  • a rotor 1 is shown with axially projecting permanent magnet 4 in the circular view, in the circular ring sectors 14 between each two adjacent permanent magnets 4 in the rotor frame 2 as flux barriers gap-like recesses 50 are introduced, which to the outer
  • the flux barriers 50 as well as the inner recesses 8 and the outer recesses 10 are filled with a non-magnetic filling material 54, which protrudes axially over the rotor frame 2 at some locations and is formed there as a fan blade 56.
  • the flux barriers 50 cause a concentration of magnetic flux in the rotor poles 15 to the outer surface 52 of the rotor 1, so that the flux of a rotor pole 15 has an improved interlinkage with the flux of a corresponding stator pole 58 of a stator 60 of the electromechanical machine 62.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L'invention concerne un rotor (1) pour une machine électromécanique (62), mise au point pour tourner autour d'un axe (5) par rapport à un stator (60), et comprenant un cadre de rotor (2) et des aimants permanents (4). Les aimants permanents (4) sont introduits dans des poches, lesquelles sont disposées dans une direction azimutale dans le cadre de rotor (2). Les aimants permanents (4) sont magnétisés dans la direction azimutale et respectivement deux aimants permanents (4) voisins pourvus d'un pôle respectivement identique sont tournés l'un vers l'autre. Les aimants permanents (4) font saillie (6) du cadre de rotor dans la direction axiale et/ou un certain nombre d'aimants permanents (4) présentent respectivement une section transversale orthogonale par rapport à l'axe (5), laquelle, à la différence d'une forme rectangulaire, est trapézoïdale au moins sur certaines parties. L'invention concerne en outre une machine électromécanique (62), laquelle comprend un stator (60) et un rotor (1) de ce type.
EP14725004.7A 2013-05-15 2014-05-07 Rotor pour machine électromécanique Withdrawn EP2997644A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102013008305 2013-05-15
DE102013013629 2013-08-16
DE201310020461 DE102013020461A1 (de) 2013-05-15 2013-12-06 Rotor für elektromechanische Maschine
PCT/EP2014/001213 WO2014183843A2 (fr) 2013-05-15 2014-05-07 Rotor pour machine électromécanique

Publications (1)

Publication Number Publication Date
EP2997644A2 true EP2997644A2 (fr) 2016-03-23

Family

ID=51831207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14725004.7A Withdrawn EP2997644A2 (fr) 2013-05-15 2014-05-07 Rotor pour machine électromécanique

Country Status (3)

Country Link
EP (1) EP2997644A2 (fr)
DE (1) DE102013020461A1 (fr)
WO (1) WO2014183843A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218304B3 (de) * 2015-09-23 2017-04-06 Siemens Aktiengesellschaft Elektrische Maschine mit hoch drehzahlfestem Rotor
CN107919750A (zh) * 2016-10-08 2018-04-17 珠海格力节能环保制冷技术研究中心有限公司 转子以及永磁电机
KR102527782B1 (ko) * 2017-12-18 2023-05-02 엘지이노텍 주식회사 로터 및 이를 구비하는 모터

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09233750A (ja) * 1996-02-21 1997-09-05 Daikin Ind Ltd ブラシレスｄｃモータ及びその永久磁石保持方法
US6674205B2 (en) * 2002-05-07 2004-01-06 General Motors Corporation Auxiliary magnetizing winding for interior permanent magnet rotor magnetization
JP5096756B2 (ja) * 2007-02-15 2012-12-12 株式会社豊田中央研究所 回転電機
DE102007000213A1 (de) * 2007-04-10 2008-10-16 Hilti Aktiengesellschaft Permanentmagnetmotor
CN102377257B (zh) * 2010-08-10 2016-03-30 德昌电机(深圳)有限公司 无刷电机
FR2976139B1 (fr) * 2011-05-31 2016-04-15 Moteurs Leroy-Somer Rotor a aimants permanents et machine tournante comportant un tel rotor.
WO2013053704A2 (fr) * 2011-10-11 2013-04-18 Robert Bosch Gmbh Rotor en étoile à géométrie intérieure optimisée
ITBO20110587A1 (it) * 2011-10-17 2013-04-18 Spal Automotive Srl Rotore per macchina elettrica e relativo procedimento di assemblaggio
DE102012212775A1 (de) * 2012-07-20 2014-01-23 Robert Bosch Gmbh Rotoranordnung für eine elektrische Maschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014183843A2 *

Also Published As

Publication number Publication date
DE102013020461A1 (de) 2014-11-20
WO2014183843A2 (fr) 2014-11-20
WO2014183843A3 (fr) 2015-07-02

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