WO2007016345A1 - Ensemble et moyeu de rotor pour machine motrice electrique a aimants permanents - Google Patents

Ensemble et moyeu de rotor pour machine motrice electrique a aimants permanents Download PDF

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Publication number
WO2007016345A1
WO2007016345A1 PCT/US2006/029414 US2006029414W WO2007016345A1 WO 2007016345 A1 WO2007016345 A1 WO 2007016345A1 US 2006029414 W US2006029414 W US 2006029414W WO 2007016345 A1 WO2007016345 A1 WO 2007016345A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
rotor hub
hub
permanent magnets
elongated slots
Prior art date
Application number
PCT/US2006/029414
Other languages
English (en)
Inventor
Raymond Ong
Martin J. Reckker
Original Assignee
Siemens Vdo Automotive Corporation
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
Priority claimed from US11/192,321 external-priority patent/US20060022541A1/en
Priority claimed from CA002514096A external-priority patent/CA2514096A1/fr
Application filed by Siemens Vdo Automotive Corporation filed Critical Siemens Vdo Automotive Corporation
Priority to DE112006001929T priority Critical patent/DE112006001929T5/de
Priority to JP2008524197A priority patent/JP2009517989A/ja
Publication of WO2007016345A1 publication Critical patent/WO2007016345A1/fr

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
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • 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

Definitions

  • the present disclosure relates generally to electric machines, for example, permanent magnet motors and generators.
  • Electric machines for example, electric motors and generators, are used in many applications, including those ranging from electric vehicles to domestic appliances. Improvements in machine performance, reliability, efficiency, and power density for all types of electric motors are desirable.
  • An electric machine converts electrical or electromagnetic energy into mechanical energy or conversely converts mechanical energy into electrical or electromagnetic energy.
  • the permanent magnets used in rotor assemblies are disposed within pockets.
  • the pockets are typically formed near the outer perimeter of the rotor hub, which is built up from laminations made from electric grade steel. Electric grade steel is used on rotor assemblies because it has a greater permeability for conducting the magnetic lines of force.
  • the process of building up a rotor with laminations is done to reduce eddy current losses in the rotor hub, especially during higher rotation speeds.
  • the rotor extends from its outer perimeter to an inner diameter that interfaces with a shaft.
  • the total mass of the rotor assembly is one of the parameters that affects the acceleration characteristics of the electric motor, the cost of the rotor assembly, and the amount of stress experienced by the various components of the rotor assembly, among other things.
  • Shafts used in electric machine are typically made from structural steel, which is slightly more dense and certainly stronger than electric grade steel.
  • an electric motor of the Toyota Prius which is a hybrid vehicle, utilizes a hollow shaft with an integrated carriage.
  • the carriage includes a central web having one end connected to the main shaft and the other end connected to a carriage support that extends axially in either direction away from the central web.
  • a laminated rotor hub with permanent magnets is retained within the carriage support.
  • the inclusion of the central web extending radially from the shaft creates unique balancing issues with respect to vibration modes.
  • the bearing positions on the Toyota Prius shaft must be positioned to minimize the bending stress arising from the central web.
  • the configuration of the rotor assembly is not readily convertible to other types or sizes of motors.
  • Conventional rotor assemblies include rectangular-shaped rotor pockets in which the rectangular-shaped permanent magnets are disposed.
  • the stress concentrations in the magnet pockets and in the rotor laminations exacerbate the localized stresses as the operating speeds increase.
  • the permanent magnets exert an outward radial force on the magnet pockets, which results in the centrifugal forces being reacted at the outer corners of the pockets.
  • These localized stresses in conventional rotor assemblies are one reason for providing more material in the rotor. It would be desirable to reduce the mass of the rotor hub, the shaft, and the permanent magnets either individually or collectively while maintaining a rotor assembly configuration that could be easily manufactured and scaled to different size electric machines.
  • the assemblies and components described herein provide a variety of ways to reduce the weight of a rotor assembly for an electric machine. Reducing the weight of the rotor assembly permits the rotor to rotate at higher speeds while meeting specific mass targets for electric machines in the automotive industry, as well as other industries.
  • a rotor assembly includes a rotor hub comprising a first portion and a second portion, the first portion comprising an outer diameter and an inner diameter, the first portion comprising a plurality of uniformly, circumferentially spaced magnet pockets, the second portion comprising an inner diameter and an outer diameter, the outer diameter of the second portion abutting with the inner diameter of the first portion, the second portion comprising a plurality of passages, each adjacent passage separated by spokes, each spoke comprising a uniform thickness with respect to an adjacent spoke, the spokes connecting the outer diameter of the second portion with a shaft attachment region, the region integrally and proximately formed with the inner diameter of the second portion; a first set of permanent magnets, a respective one of the permanent magnets of the first set of permanent magnets received in a respective one of the magnet pockets; and a shaft comprising an outer diameter sized to closely receive the inner diameter of the second portion of the rotor hub.
  • an electric machine in another embodiment, includes a rotor assembly comprising a rotor hub and a shaft, the rotor hub comprising a first portion and a second portion, the first portion comprising an outer diameter and an inner diameter, the first portion comprising a plurality of uniformly, circumferentially spaced magnet pockets, the second portion comprising an inner diameter and an outer diameter, the outer diameter of the second portion abutting with the inner diameter of the first portion, the second portion comprising a plurality of passages, each adjacent passage separated by spokes, each spoke comprising a uniform thickness with respect to an adjacent spoke, the spokes connecting the outer diameter of the second portion with a shaft attachment region, the region integrally and proximately formed with the inner diameter of the second portion; a first set of permanent magnets, a respective one of the permanent magnets of the first set of permanent magnets received in a respective one of the magnet pockets; and a stator comprising a plurality of windings, the windings positioned to electromagnetically cause rotation of the rot
  • a rotor assembly in another embodiment, includes a rotor hub comprising an outer diameter and an inner diameter, a plurality of uniformly, circumferentially spaced magnet pockets located between the outer diameter and the inner diameter; a first set of permanent magnets, a respective one of the permanent magnets of the first set of permanent magnets received in a respective one of the magnet pockets; an intermediate hub comprising an outer diameter and an inner diameter, the intermediate hub further comprising a plurality of lightening holes axisymmetrically arranged between a region bordered by the outer diameter and the inner diameter of the intermediate hub, the outer diameter of the intermediate hub being sized to closely receive the inner diameter of the rotor hub; and a shaft comprising an outer diameter sized to closely receive the inner diameter of the intermediate hub.
  • an electric machine in another embodiment, includes a rotor assembly comprising a rotor hub, a shaft, and an intermediate hub, the rotor hub comprising an outer diameter and an inner diameter, a plurality of uniformly, circumferentially spaced magnet pockets located between the outer diameter and the inner diameter; a first set of permanent magnets, a respective one of the permanent magnets of the first set of permanent magnets received in a respective one of the magnet pockets; an intermediate hub comprising an outer diameter and an inner diameter, the intermediate hub further comprising a plurality of lightening holes axisymmetrically arranged between a region bordered by the outer diameter and the inner diameter of the intermediate hub, the outer diameter of the intermediate hub being sized to closely receive the inner diameter of the rotor hub; and a stator comprising a plurality of windings, the windings positioned to electromagnetically cause rotation of the rotor assembly.
  • a rotor hub in yet another embodiment, includes an outer diameter and an inner diameter; a plurality of magnet pockets, the pockets formed in a region proximate to and slightly radially inward from the outer diameter of the rotor hub; and at least a first permanent magnet comprising a pole arc to pole pitch ratio of about 0.9 arranged within each magnet pocket.
  • a rotor hub having an outer periphery for an electric machine includes a plurality of elongated slots proximate the outer periphery of the rotor hub, the elongated slots each having a respective major axis, the major axis being non-perpendicular to a respective radial axis extending from an axisymmetric centerline of the rotor hub.
  • the rotor hub includes a plurality of passages formed in the rotor hub, at least one of the passages cooperating with an orientation of at least one of the elongated slots to minimize rotor hub weight while maintaining operational integrity of the rotor hub.
  • Figure 1 is a cross-sectional view of an electric machine according to one illustrated embodiment.
  • Figure 2 is a front, left isometric view of a rotor assembly for an electric motor according to one illustrated embodiment.
  • Figure 3 is a cross-sectional view of the rotor assembly of Figure 2.
  • Figure 4 is a cross-sectional view of the rotor assembly of Figure 2 along line 4-4 of Figure 3 showing the rotor hub configured with circumferentially spaced passages and spokes.
  • Figure 5A is a cross-sectional view of another rotor assembly having reduced thickness spokes according to another illustrated embodiment.
  • Figure 5B is a cross-sectional view of another rotor assembly having a reduced number of passages and spokes according to another illustrated embodiment
  • Figure 6 is a front, left isometric view of a rotor assembly having an intermediate hub according to another illustrated embodiment.
  • Figure 7 is a cross-sectional view of the rotor assembly of Figure 6.
  • Figure 8A is a cross-sectional view of the rotor assembly of Figure 6 along line 8-8 of Figure 7 showing the rotor hub configured with an intermediate hub that includes lightening holes therein.
  • Figure 8B is a cross-sectional view of another rotor assembly having a different configuration of lightening holes in the intermediate hub.
  • Figure 9 is a cross-sectional view of a rotor assembly having a shaft torsionally coupled with a full-thickness rotor hub according to one illustrated embodiment.
  • Figure 10 is a cross-sectional view of a rotor assembly having an enlarged diameter hollow shaft according to one illustrated embodiment.
  • Figure 11 is a cross-sectional view of another rotor assembly having an enlarged diameter hollow shaft with a generally tapered region between an end plate and bearing according to one illustrated embodiment.
  • Figure 12 is a cross-sectional view of a rotor hub having a number of angled, elongated slots arranged with a number of passages according to the illustrated embodiment.
  • Figure 13 is an enlarged view of a pair of the elongated slots of the rotor hub of Figure 12.
  • FIG. 1 illustrates an electric machine 2 according to one embodiment of the present assemblies, devices and systems.
  • the electric machine 2 of the illustrated embodiment comprises a housing 4, a stator 6, and a rotor assembly 10.
  • the stator 6 includes electrical windings, which are not shown, but are well known in the art.
  • Figures 2 and 3 show the rotor assembly 10 comprising a rotor hub 12, a shaft 14, a number of permanent magnets 16, and a banding layer 18.
  • the rotor assembly 10 further comprises a pair of end plates 20.
  • the shaft 14 is mounted on roller bearings 22.
  • the rotor assembly 10 is mass balanced to rotate about a centerline 24. The mass balancing can be accomplished by removing or adding material to the end plates 20.
  • the rotor hub 12 includes a first portion 30 and a second portion 32.
  • the rotor hub 12 is built up from laminations, which is a process well known in the art to reduce the eddy current effect in the rotor hub 12.
  • the laminations are thin steel layers or sheets, which are stacked and fastened together by cleats, rivets or welds.
  • the first portion 30 of the rotor hub 12, often referred to as the "active" portion of the rotor hub 12, conducts the lines of magnetic flux.
  • the dimensions of a cross-sectional area of the first portion 30 affect the efficiency of the device.
  • the reluctance e.g., resistance
  • one way to reduce the weight of the rotor assembly 10 is to reduce the cross sectional area of the second portion 32 of the rotor hub 12.
  • the first portion 30 and the second portion 32 can be integrally formed to achieve a monolithic or one-piece rotor hub 12. However, one skilled in the art will understand and appreciate that the first portion 30 and the second portion 32 can also be separate components that are mechanically joined, for example by an interference fit-up process.
  • Figure 4 shows the rotor assembly 10 of Figure 2.
  • a dashed line 34 represents the demarcation between the first portion 30 and the second portion 32 of the rotor hub 12.
  • the shaft 14 is torsionally coupled with the second portion 32 of rotor hub 12 by complementary formed keyways 26.
  • the torsional coupling strength between the shaft 14 and the rotor hub 12 can be increased by providing an interference fit between the shaft 14 and the rotor hub 12.
  • the interference fit can be in addition to the keyways 26 or it can be the sole means of torsionally coupling the shaft 14 to the rotor hub 12. In the illustrated embodiment, only two keyways 26 are shown, however one skilled in the art will understand and appreciate that the rotor assembly 10 may employ a greater or a lesser number of keyways 26.
  • the second portion 32 can further be configured with a reduced-weight cross-sectional profile that is capable of withstanding the operating stresses of the electric machine, for example stresses due to thermal cycling, centrifugal forces, and other forces.
  • the rotor hub 12 may be operable between speeds of about 13,500 - 18,000 rpm.
  • the rotor hub 12 can operate at temperatures up to about 120 degrees Celsius. In an alternate embodiment, the rotor hub 12 can operate at temperatures up to about 180 degrees Celsius.
  • the lamination sheets that are used to build up the rotor hub 12 are typically made from an electrical steel, which has a lower strength than a structural steel.
  • electrical steel which is sometimes referred to as “lamination steel”
  • lamination steel can have a tensile strength/density ratio that is about 50% less than the tensile strength/density ratio of structural steel.
  • the lamination steel may have a density of 7.6 g/cm 3 and a tensile strength of 550 MPa.
  • Structural steel like that used for the shaft 14, can have a density of 7.9 g/cm 3 and a tensile strength of 850 MPa. Because weaker lamination steel is typically used for building up rotor hubs, it has been common in the industry to have both the first portion 30 and the second portion 32 be solid. As explained, earlier, the first portion 30 needs to be substantially solid to efficiently conduct sufficient lines of magnetic flux. However, a solid second portion 32 adds a significant amount of material and attributes excess weight to the rotor hub 12. Still referring to Figure 4, the illustrated embodiment depicts the second portion 32 of the rotor hub 12 configured with a number of circumferentially spaced passages 36 separated by spokes 38.
  • the passages 36 and spokes 38 are adjacently located and connected to a shaft attachment region 40.
  • the shaft attachment region 40 provides sufficient material to form the keyways 26 and withstand the torsional stresses resulting from the interaction between the shaft 14 and the rotor hub 12.
  • the passages 36 extend axially through the second portion 32 of the rotor hub 12 as shown in Figure 3. Although eight passages 36 are shown in the illustrated embodiment, one skilled in the art will understand and appreciate that second portion 32 can be configured with a greater or lesser number of passages 36.
  • the illustrated embodiment includes eight magnet pockets 42, each pocket configured to receive sixteen permanent magnets 16.
  • the permanent magnets 16 can be made from sintered neodymium iron boron, which is suitable for operation up to a temperature of at least 180 degrees Celsius.
  • One skilled in the art will understand and appreciate that the first portion 30 of the rotor hub 12 can include a greater or a lesser number of permanent magnets 16.
  • the banding layer 18, which is formed around an outer diameter 28 of the first portion 30 of the rotor hub 12.
  • a plurality of ribs 44 separate the circumferentially spaced magnet pockets 42.
  • An epoxy is used to fill the space 46 remaining in the magnet pockets 46 that is not otherwise filled by the permanent magnets 16.
  • One epoxy that can be used to fill the remaining space 46 is a glass filled epoxy.
  • the permanent magnets 16 can additionally or alternatively be bonded within the magnet pockets 42 with a magnetic adhesive such as a cyanoacrylate adhesive.
  • the permanent magnets 16 are provided with straight sides and a thickness of about 9.0 mm.
  • the banding layer 18 provides radial reinforcement for the rotor hub 12 and the permanent magnets 16.
  • the banding layer 18 can protect the permanent magnets 16 against corrosion.
  • the banding layer 18 is composed of a carbon/epoxy matrix. In one embodiment, the banding layer 18 is composed of a 65% carbon/epoxy matrix.
  • the carbon/epoxy composite material is wet laid onto the rotor hub 12 where a bond is formed between an inner diameter of the banding layer 18 and the outer diameter 28 of the rotor hub 12.
  • a banding layer thickness in the range of about 1.00 mm to 2.00 mm is adequate for most electric machine applications.
  • Figures 5A and 5B illustrate two alternative embodiments where each of the alternative embodiments differs from the previous embodiment only by the configuration of the passages 36 and spokes 38.
  • Figure 5 A illustrates one alternate embodiment of a rotor assembly 100.
  • the rotor assembly 100 has a rotor hub 112, a shaft 114, permanent magnets 116, and a banding layer 118.
  • the passages 120 are widened, or stating this alternatively, the thickness of each spoke 122 is reduced. Such a reduction can be verified through the use of finite element analysis or prototype testing to insure that the spokes 122 retain enough cross-sectional area to support the first portion 124 of the rotor hub 112.
  • the rotor assembly 200 is similar to the previous embodiment in that it has a rotor hub 212, a shaft 214, magnets 216, and a banding layer 218.
  • the rotor hub 212 is configured with a fewer number of passages 220 and likewise a fewer number of spokes 222.
  • the relative weight reduction in a range of about 25% - 35% may be achieved with any of the above embodiments.
  • the stated weight reduction is in comparison to a solid rotor hub, specifically a solid second portion of a rotor hub.
  • FIGs 6, 7 and 8A illustrate a rotor assembly 300 according to another embodiment of the present assemblies, devices and systems.
  • the rotor assembly 300 is similar to the previous embodiment in that it has a rotor hub 312, a shaft 314, magnets 316, and a banding layer 318.
  • the rotor hub 312 differs from that of Figures 2 through 5B in that an intermediate hub 320 is substituted for the second portion 32 of the embodiment depicted in e.g. Figure 3.
  • Figure 8A shows the intermediate hub 320 located between the rotor hub
  • the intermediate hub 320 is made from aluminum in the present embodiment.
  • the tensile strength of aluminum in comparison to its low density makes aluminum a good component for the intermediate hub 320.
  • the intermediate hub 320 can be interference fit with the shaft 314. Due to the range of operating temperatures of the rotor assembly 300, the interface pressure developed during the interference fit generation between the intermediate hub 320 and the shaft 314 can be increased.
  • One method of developing a high interference fit between the intermediate hub 320 and the shaft 314 is to heat up the intermediate hub 320, assemble it with the shaft 314, and then allow the assembly to cool.
  • the intermediate hub 320 also physically interfaces with the rotor hub
  • the torsional coupling of the intermediate hub 320 with the rotor hub 312 can be accomplished with key ways 322.
  • the torsional coupling of the intermediate hub 320 with the rotor hub 312 can be mechanically accomplished with an interference fit, bonding, welding, or some other process.
  • the weight of the intermediate hub 320 can be further reduced by the addition of lightening holes 324, which can extend all the way through the axial length of the intermediate hub 320.
  • Figure 8B illustrates a rotor assembly 400, which is similar to the rotor assembly 300 of Figure 8 A except that an intermediate hub 420 includes a number of larger lightening holes 424.
  • an intermediate hub 420 includes a number of larger lightening holes 424.
  • the size, shape, and orientation of the lightening holes 424 can vary depending on any number of factors.
  • the lightening holes 424 can be configured to augment the mass balancing of the rotor assembly 400. Consequently, the relative weight reduction of the embodiments shown in Figures 6, 7, 8A, and 8B, when compared to a solid rotor hub, specifically a solid second portion of a rotor hub, is in the range of about 15% - 25%.
  • FIG. 9 illustrates a cross-sectional view of a rotor assembly 500 according to one embodiment of the present assemblies, devices and systems. Only significant differences between the present embodiment and the above embodiments will be identified.
  • a number of permanent magnets 502 are arranged around an outer portion 504 of a rotor hub 506.
  • Each of the permanent magnets 502 has an annular shape with an inner arc 508 and an outer arc 510.
  • the permanent magnets 502 can be recessed into the rotor hub 506 and retained with the rotor hub 506 by a banding layer 512.
  • a magnet adhesive (not shown), such as a cyanoacrylate adhesive, can be used to bond the permanent magnets 502 with the rotor hub 506 and/or the banding layer 512.
  • the permanent magnets 502 are configured to have an arc measurement 514.
  • the arc measurement 514 is in the range of about 35.5 - 45.5 degrees, the thickness and thus the weight of the permanent magnets 502 can be reduced.
  • the arc measurement 514 is about 40.5 degrees, which correlates to a pole arc to pole pitch ratio of 0.9.
  • the magnet thickness can be reduced to about 7.5 mm when the arc measurement 514 is about 40.5.
  • EMF electromotive force
  • Figure 10 illustrates a rotor assembly 600 with a large diameter, hollow shaft 602 rotationally coupled to a rotor hub 604.
  • One purpose of the hollow shaft 602 is to replace the second portion 32 of the rotor hub 12 shown in Figures 3 and 4.
  • the rotor hub 604 could be mounted directly to the hollow shaft 602 whether with complementary keyways, an interference fit, or some other mechanical coupling method.
  • Figure 11 illustrates another rotor assembly 700 with a large diameter hollow shaft 702.
  • a rotor hub 704 can receive the hollow shaft 702.
  • the hollow shaft 702 of the illustrated embodiment has a blended section 706 that blends into each journal end 708.
  • the blended section 706 can reduce localized stress concentrations and smooth out the load path.
  • the embodiments with the hollow shafts 602, 702 illustrated in Figures 10 and 11 would not only reduce the overall weight of the rotor assembly, but also reduce the part count of the rotor assemblies 600, 700.
  • One advantage of the embodiments of the rotor assemblies discussed herein is that at least a majority of any intricately shaped portions of the rotor assembly are within the laminated region of the rotor assembly. In doing such, the other rotor assembly components can have designs that are easier to manufacture, thus reducing production complexity and cost.
  • Figure 12 shows a rotor hub 800 for an electric machine having an outer periphery 802.
  • the rotor hub 800 includes a plurality of elongated slots 804, which may be approximately rectangular and/or elliptical in shape, located proximate to the outer periphery 802 of the rotor hub 800.
  • the elongated slots 804 each having a respective major axis 806.
  • the elongated slots 804 are oriented such that the respective major axes 806 are not perpendicular to a respective radial axis 808 extending from an axis of rotation or an axisymmetric centerline 810 of the rotor hub 800.
  • the rotor hub 800 includes a plurality of passages 812 formed in the rotor hub 800 according to the illustrated embodiment.
  • the arrangement of the passages 812 with respect to the elongated slots 804 allows the weight of the rotor hub to be minimized while the structural and/or operational integrity of the rotor hub 800 is maintained.
  • Figure 13 shows an enlarged view of the elongated slot 804 located near the periphery 802 of the rotor hub 800 according to one illustrated embodiment.
  • the major axis of a first one of the slots 804a forms an acute angle 814 (i.e., greater than 0, but less than 180 degrees) with the major axis of an adjacent or next successive one of the slots 804b.
  • the slots 804a, 804b may be separated by a portion 816 of the rotor hub 800.
  • the arrangement and orientation of the slots 804, specifically the slots 804a, 804b forming an acute angle 814 open toward the periphery of the rotor hub 800 can reduce the operating stress on a bridge region 818, which is the region of the rotor hub 800 located between the slots 804 and the periphery 802 of the rotor hub 800.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L’invention concerne un ensemble de rotor destiné à être utilisé dans un moteur ou un générateur électrique, et présentant une masse réduite par rapport aux ensembles de rotor traditionnels. L’ensemble de rotor est en outre configuré pour pouvoir être adapté à des moteurs électriques de tailles différentes. Le moyeu de rotor, l’arbre et les aimants permanents au sein de l’ensemble de rotor peuvent être modifiés individuellement ou collectivement pour réduire la masse de l’ensemble de rotor. Selon un premier aspect, une partie du moyeu de rotor adjacente à l’arbre est dotée de passages et de bras. Selon un deuxième aspect, un moyeu intermédiaire dans lequel sont ménagés des trous d’allègement est monté entre l’arbre et le moyeu de rotor. Selon un troisième aspect, un arbre creux de grand diamètre remplace une partie du moyeu de rotor. Selon un quatrième aspect, les aimants permanents prennent une forme arquée permettant d’en réduire l’épaisseur sans en réduire l’efficacité.
PCT/US2006/029414 2005-07-28 2006-07-27 Ensemble et moyeu de rotor pour machine motrice electrique a aimants permanents WO2007016345A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112006001929T DE112006001929T5 (de) 2005-07-28 2006-07-27 Rotornabe und -baugruppe für eine Permanentmagnet-Elektromaschine
JP2008524197A JP2009517989A (ja) 2005-07-28 2006-07-27 永久磁石動力型電気機械のローター・ハブ及び集合体

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/192,321 2005-07-28
US11/192,321 US20060022541A1 (en) 2004-07-30 2005-07-28 Rotor hub and assembly for a permanent magnet power electric machine
CA002514096A CA2514096A1 (fr) 2004-07-30 2005-07-29 Moyeu de rotor et ensemble pour machine a moteur electrique a aimant permanent
CA2,514,096 2005-07-29

Publications (1)

Publication Number Publication Date
WO2007016345A1 true WO2007016345A1 (fr) 2007-02-08

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PCT/US2006/029414 WO2007016345A1 (fr) 2005-07-28 2006-07-27 Ensemble et moyeu de rotor pour machine motrice electrique a aimants permanents

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DE (1) DE112006001929T5 (fr)
WO (1) WO2007016345A1 (fr)

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JP2009106051A (ja) * 2007-10-23 2009-05-14 Daihatsu Motor Co Ltd ロータ
WO2010040533A2 (fr) * 2008-10-08 2010-04-15 Pro Diskus Ag Rotor pour machine électrique
US8127028B2 (en) 2007-09-17 2012-02-28 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement of a multimedia gateway and communication terminals
JP2012249520A (ja) * 2012-09-14 2012-12-13 Meidensha Corp 永久磁石式リラクタンスモータの回転子
TWI656715B (zh) * 2017-10-19 2019-04-11 大銀微系統股份有限公司 具防護機構之馬達轉子

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US7791236B2 (en) 2007-08-16 2010-09-07 Ford Global Technologies, Llc Permanent magnet machine
DE102008041555A1 (de) * 2008-08-26 2010-03-04 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Rotoreinheit für eine permanenterregte elektrische Maschine und Verfahren zur Montage von Permanentmagneten
US8536748B2 (en) 2008-11-11 2013-09-17 Ford Global Technologies, Llc Permanent magnet machine with different pole arc angles
US20100117475A1 (en) 2008-11-11 2010-05-13 Ford Global Technologies, Llc Permanent Magnet Machine with Offset Pole Spacing
US8461739B2 (en) 2009-09-25 2013-06-11 Ford Global Technologies, Llc Stator for an electric machine
DE102009043224A1 (de) * 2009-09-28 2011-03-31 Siemens Aktiengesellschaft Elektrische Maschine und Rotor für eine elektrische Maschine
DE102012011002A1 (de) * 2012-06-02 2013-12-05 Volkswagen Aktiengesellschaft Rotorwelle für ein elektrisches Aggregat und Verfahren zur Herstellung einer solchen Rotorwelle
DE102014106453A1 (de) * 2014-05-08 2015-11-12 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Elektromaschine für den Einsatz im KFZ-Bereich
DE102014107843B3 (de) * 2014-06-04 2015-11-26 Thyssenkrupp Presta Teccenter Ag Medientransport in Rotorwelle
DE102015213609A1 (de) * 2015-07-20 2017-01-26 Siemens Aktiengesellschaft Hochdynamisch betreibbarer Rotor für eine elektrische Maschine
DE102015225582A1 (de) 2015-12-17 2017-06-22 Volkswagen Aktiengesellschaft Rotorlamellenpaket und Rotor für ein elektrisches Aggregat, insbesondere für einen Elektromotor, und Verfahren zur Herstellung eines solchen Rotors
DE102018205106B4 (de) * 2018-04-05 2023-02-02 Vitesco Technologies Germany Gmbh Rotor für eine elektrische Maschine mit integriertem Radial- und Axialschwingungstilger
DE102021209602A1 (de) 2021-09-01 2023-03-02 Zf Friedrichshafen Ag Verfahren zum Aufbringen einer Rotorbandage auf einen Rotor und Herstellungsvorrichtung zum Herstellen einer Rotorbandage

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US20010017492A1 (en) * 1996-03-21 2001-08-30 Fumio Tajima Permanent magnet dynamo electric machine
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US20050104468A1 (en) * 2003-07-31 2005-05-19 Kabushiki Kaisha Toshiba Rotor for reluctance type rotating machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8127028B2 (en) 2007-09-17 2012-02-28 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement of a multimedia gateway and communication terminals
JP2009106051A (ja) * 2007-10-23 2009-05-14 Daihatsu Motor Co Ltd ロータ
WO2010040533A2 (fr) * 2008-10-08 2010-04-15 Pro Diskus Ag Rotor pour machine électrique
WO2010040533A3 (fr) * 2008-10-08 2010-08-12 Pro Diskus Ag Rotor pour machine électrique
JP2012249520A (ja) * 2012-09-14 2012-12-13 Meidensha Corp 永久磁石式リラクタンスモータの回転子
TWI656715B (zh) * 2017-10-19 2019-04-11 大銀微系統股份有限公司 具防護機構之馬達轉子

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