WO2018161214A1 - Composant de générateur, générateur ayant le composant et procédé de fabrication du composant - Google Patents

Composant de générateur, générateur ayant le composant et procédé de fabrication du composant Download PDF

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Publication number
WO2018161214A1
WO2018161214A1 PCT/CN2017/075754 CN2017075754W WO2018161214A1 WO 2018161214 A1 WO2018161214 A1 WO 2018161214A1 CN 2017075754 W CN2017075754 W CN 2017075754W WO 2018161214 A1 WO2018161214 A1 WO 2018161214A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
component
magnet
generator according
receiving part
Prior art date
Application number
PCT/CN2017/075754
Other languages
English (en)
Inventor
Ganjun ZHU
Original Assignee
Schaeffler Technologies AG & 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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to PCT/CN2017/075754 priority Critical patent/WO2018161214A1/fr
Publication of WO2018161214A1 publication Critical patent/WO2018161214A1/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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2793—Rotors axially facing stators
    • H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
    • 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

Definitions

  • This disclosure relates to a component of a generator, such as a rotor or a stator, a generator having the component, which is particularly used for a railway freight wagon, and a method for manufacturing the component.
  • a disc type permanent magnet generator has been proposed as the electric power supplier for railway freight wagons.
  • the disc type generator is an easy-mounting, reliable and economical power supply solution for railway applications.
  • magnets 2 directly use glue 3 to attach magnets 2 to a rotor substrate 1.
  • the magnet 2 has the north pole and the south pole in an axial direction of the substrate 1.
  • Adjacent magnets 2 have different pole direction from each other.
  • the working environment of the railway freight wagon is very tough, e.g. huge vibration and shock impact exists, which gives a big challenge to the disc type generator or its component. That is, the direct gluing method may not be a feasible magnet mounting solution.
  • this disclosure provides a component of a generator, such as a rotor or a stator, and a generator having the component, in which magnets are attached reliably to a substrate.
  • This disclosure also provides a method for manufacturing the component of the generator.
  • a component of a generator comprises a substrate having a shape of disc or ring and at least one magnet attached to the substrate,
  • the substrate comprises at least one receiving part
  • the at least one magnet comprises at least one embedding part, at least a part of an outer shape of the embedding part corresponds to at least a part of an inner shape of the receiving part,
  • the at least one embedding part is received in the receiving part to prohibit the at least one magnet from moving relative to the substrate exceeding a predetermined extent in at least an axial direction of the substrate.
  • the receiving parts are recesses or slots spaced from each other in a circumferential direction of the substrate.
  • the at least one receiving part is at least one slot extending along a radial direction of the substrate.
  • the slot has a width decreasing radially inward in a lateral direction perpendicular to both the axial direction and a radial direction of the substrate, so as to prohibit the at least one magnet from moving radially inward relative to the substrate.
  • At least a part of the embedding part which corresponds to the receiving part has a width in the lateral direction decreasing stepwise or continuously along the axial direction of the substrate.
  • the at least one receiving part does not penetrate the whole thickness of the substrate along the axial direction.
  • the component is a rotor or a stator of a generator.
  • the component is a rotor or a stator of a disc type generator for a railway freight wagon.
  • the at least one embedding part and the at least one receiving part have shapes matching each other.
  • the embedding part has a dove tail shape.
  • the magnet has an exposed part exposed from the substrate
  • a width of the exposed part in the lateral direction is larger than the largest width of the embedding part of the same magnet, and/or the thickness of the exposed part in the axial direction is larger than that of the embedding part of the same magnet.
  • the embedding part of one magnet has at least two subparts spaced from each other in a lateral direction perpendicular to the axial direction and a radial direction of the substrate.
  • the at least two subparts are received in the receiving part in the form of at least two separated slots of the substrate.
  • the at least two subparts are received in the receiving part in the form of one slot of the substrate.
  • the embedding part extends continuously in substantially a lengthwise direction of the magnet.
  • the embedding part is disconnected in substantially a lengthwise direction of the magnet.
  • the magnet has an exposed part exposed from the substrate, and the embedding part is symmetrical about a center line of the exposed part along a radial direction of the substrate.
  • the at least one receiving part is configured in such way that the embedding part is able to be inserted into the receiving part in a radial direction of the substrate.
  • a distance exists between the embedding part and an inner surface of the corresponding receiving part.
  • the embedding part and the corresponding receiving part are fixed to each other by interference fit.
  • adhesive exists between the embedding part and an inner surface of the receiving part.
  • the component has a hoop embracing the at least one magnet peripherally.
  • the hoop embraces the at least one magnet and the substrate together to prevent the at least one magnet from separating from the substrate in a radial direction of the substrate.
  • the substrate includes a cover member with the at least one receiving part and a base member attached to the cover member, wherein the at least receiving part does not reach the periphery of the cover member.
  • the at least one receiving part is configured in such way that the embedding part is able to be inserted into the cover member in an axial direction of the cover member.
  • the substrate includes a cover member with the at least one receiving part and a base member attached to the cover member, wherein the base member has a recess for housing the cover member with the at least one magnet attached.
  • This disclosure also provides a generator having the component of the generator according to this disclosure.
  • a method for manufacturing a component of a generator comprises a substrate having a shape of disc or ring and at least one magnet attached to the substrate,
  • the substrate comprises at least one receiving part
  • the at least one magnet comprises at least one embedding part
  • at least a part of an outer shape of the embedding part corresponds to at least a part of an inner shape of the receiving part, so as to prohibit the at least one magnet from moving relative to the substrate exceeding a predetermined extent in at least an axial direction of the substrate
  • the method includes a step of assembling the embedding part into the receiving part.
  • the method includes a step of inserting the embedding part into the receiving part radially inward.
  • the component of the generator further comprises a hoop
  • the method includes a step of assembling the hoop to embrace peripherally the substrate with the at least one magnet attached. so as to prohibit the at least one magnet from moving radially relative to the substrate.
  • the receiving part is in the form of slot reaching the periphery of the substrate.
  • the substrate has a cover member having the at least one receiving part and a base member, and wherein the method includes a step of attaching the cover member with the base member.
  • the at least one receiving part is in the form of at least one slot penetrating the cover member and reaching the periphery of the cover member, and the at least one embedding part is inserted through the receiving part of the cover member in an axial direction of the cover member.
  • the base member has a recess for housing the cover member with the at least one magnet attached.
  • the method includes a step of applying adhesive to the receiving part of the substrate and/or the embedding part of the magnet.
  • the at least one receiving part does not penetrate the whole thickness of the substrate along the axial direction.
  • a mounting fixture for holding the magnets when attaching the magnets into the substrate can be omitted.
  • Fig. 1 schematically illustrates a rotor in the related art.
  • Fig. 2A schematically illustrates a component of a generator in the first embodiment of this disclosure.
  • Figs. 2B and 2C schematically illustrate a magnet of the component shown in Fig. 2A.
  • Fig. 2D schematically illustrates a substrate of the component shown in Fig. 2A.
  • Fig. 3 schematically illustrates the component of the generator in the second embodiment of this disclosure.
  • Figs. 4A to 4C schematically illustrate the component of the generator in the third embodiment of this disclosure.
  • Figs. 5A to 5I schematically illustrate variations of the component of the generator of this disclosure.
  • the substrate 10 has a shape of disc or ring, and the receiving parts in the form of recesses or slots 12 formed in its body 11 for receiving and holding the embedding parts 22 of the magnet 20.
  • the slot 12 does not penetrate the whole thickness of the substrate 10 in an axial direction of the substrate 10, and extends radially in the body 11 from the periphery 13 of the substrate 10 to a position near the center of the body 11.
  • the slots 12 are spaced from each other in a circumferential direction of the substrate 10.
  • the slot 12 has a width decreasing radially inward in a direction (hereinafter, referred as a lateral direction) perpendicular to both the axial direction and a radial direction of the substrate 10.
  • the magnet 20 has a first end 23 located radially outward of the substrate 10 and a second end 24 located radially inward of the substrate 10.
  • the end surface of the first end 23 has preferably the same center of a circle as that of the substrate 10, and more preferably an arc that has the same radius of curvature as that of the substrate 10.
  • the end surface of the second end 24 preferably is flat. By such end surfaces, sharp points can be reduced and line of magnetic flux or the magnetic field can be optimized.
  • the first end 23 has a width in the lateral direction preferably larger than that of the second end 24.
  • the width of the exposed part 21 is larger than the largest width of the embedding part 22.
  • the thickness of the exposed part 21 in the axial direction of the substrate 10 is preferably larger than that of the embedding part 22.
  • the exposed part 21 and the embedding part 22 both are trapezoid.
  • the cross section of the exposed part 21 in the lateral direction is rectangular.
  • the cross section of the embedding part 22 in the lateral direction has a trapezoid shape and preferably a shape of an isosceles trapezoid.
  • the embedding part 22 has a shape of a wedge or a dove tail.
  • the slot 12 of the substrate 10 has a shape corresponding to that of the embedding part 22 and a size the same as or slightly larger than the size of the embedding part 22.
  • a small distance may exist between the embedding part 22 and an inner surface of the slot 12. This distance can be eliminated by an adhesive or a cushion material.
  • the embedding part 22 and the slot 12 can also be fixed to each other by interference fit.
  • a dove tail structure is configured in the magnet 20 in a part facing the substrate 10. Meanwhile, the substrate 10 may have a dove tail slot.
  • the component of the generator 100 may be assembled by steps of:
  • a mounting fixture for holding the magnets when attaching magnets into the substrate can be omitted;
  • Fig. 3 illustrates a front view of the component of the generator 100 of the second embodiment. This embodiment has a similar structure as that of the first embodiment and only the differences therebetween will be described hereinafter.
  • the component 100 of the present embodiment includes a substrate 10 having a body and a plurality of slots, a plurality of magnets 20 each having an exposed part and an embedding part, and a hoop 40 embracing the substrate 10 and at least the embedding part of the magnet 20 peripherally.
  • the hoop 40 can prevent the magnets 20 from separating from the substrate 10 in the radial direction, even when the component 100 is a rotor which rotates in a high speed.
  • the hoop 40 can embrace the magnets 20 only.
  • the magnet 20 has a cross section of a trapezoid in the lateral direction, and the embedding part 22 and the exposed part 21 are continuously smooth.
  • the embedding part 22 has a larger width in the lateral direction than that of the exposed part 21.
  • an adhesive layer 30 is also shown in the figure. In other figures, illustration of the adhesive layer is omitted. Of course, an adhesive layer may or may not exist between the embedding part and the slot, even between the exposed part and the substrate.
  • the substrate 10 can include two separate members, i.e. a cover member 14 with the slots 12 and a base member 15.
  • the cover member 14 has a plurality of slots 12 penetrating through the cover member 14 in the axial direction.
  • the slots 12 do not reach the periphery of the cover member 14; therefore, the periphery part 16 of the cover member 14 can prevent the magnets 20 (not shown in Fig. 4B) in the slots 12 from separating from the substrate 10 in the radial direction.
  • the hoop in the second embodiment is formed integrally with the substrate.
  • the cover member 14 has a plurality of slots 12 penetrating through the cover member 14 in the axial direction.
  • the slots 12 reach the periphery of the cover member 14. Therefore, the magnets 20 can be inserted into the cover member 14 in the radial direction or in the axial direction.
  • the base member 15 has a recess 19 in the center of its body.
  • the base member 15 has a flange 18 in a shape of ring at the periphery part thereof.
  • the recess 19 is used to receive the cover member 14 and the magnets 20.
  • the flange 18 preferably has a thickness in the axial direction the same as that of the cover member 14.
  • the flange 18 has a similar function as the hoop in the second embodiment, that is, the flange 18 can prevent the magnets 20 in the slots 12 from separating from the substrate 10 in the radial direction.
  • the base member 15 can be attached to the cover member 14 with magnets 20 attached by various means.
  • Figs. 5A to 5F schematically illustrate cross sections of the magnets 20 and the substrate 10 along the lateral direction.
  • the magnet 20 in the cross section along the lateral direction, has the exposed part 21 with a rectangle shape and the embedding part 22 with a step.
  • the embedding part 22 has a first part 221 having the same width as that of the exposed part 21 and extending from the exposed part 21 smoothly, and a second part 222 having a larger width than that of the first part 221.
  • the slot 12 of the substrate 10 has a shape corresponding to that of the embedding part 22.
  • the substrate 10 can be a single piece or implemented as two members as similarly to the third embodiment.
  • the magnet 20 in the cross section along the lateral direction, has the exposed part 21 with a rectangle shape and the embedding part 22 with a step. A step is also formed between the exposed part 21 and the embedding part 22.
  • the embedding part 22 has a first part 221 having a width smaller than that of the exposed part 21, and a second part 222 having a larger width than that of the first part 221.
  • the width of the exposed part 21 is preferably larger than that of the second part 222.
  • the slot 12 of the substrate 10 has a shape corresponding to that of the embedding part 22.
  • the embedding part 22 is round.
  • the embedding part 22 in the cross section along the lateral direction, has a first subpart 223 and a second subpart 224 separated from each other in the lateral direction.
  • the first subpart 223 and the second subpart 224 connect to the exposed part 21 at their roots.
  • the slot 12 correspondingly has a first slot 121 and a second slot 122 for receiving the first subpart 223 and the second subpart 224, respectively.
  • each of the slot 12 i.e., the first slot 121 and the second slot 122
  • the embedding part 22 i.e., the first subpart 223 and the second subpart 224 is not symmetrical.
  • Fig. 5F has a similar structure as that shown in Fig. 5D, except that each of the first subpart 223 and the second subpart 224 is triangular.
  • one slot 120 can be used instead of the first slot 121 and the second slot 122.
  • the embedding part of course, can be separated into more than two subparts.
  • Figs. 5G and 5H schematically illustrate bottom views of the magnet 20.
  • the embedding part 22 and the exposed part 21 both are symmetrical about a center line of the exposed part 21 along the radial direction. As compared with that shown in Figs. 2B and 2C, the embedding part 22 does not extend to the same position radially inward as the exposed part 21.
  • the exposed part 21 is symmetrical about a center line of the exposed part 21 along the radial direction, but the embedding part 22 is not symmetrical about the same center line.
  • a first line L1 and a second line L2 along the radial direction of the substrate 10 are shown. It is clear that the exposed part 21 extends along and is symmetrical about a line along the radial direction of the substrate 10.
  • the slot 12 extends along a line inclined with respect to the radial direction of the substrate 10.
  • cover member 14 in Fig. 4C and the hoop 40 in Fig. 3 can constitute a substrate of this disclosure.
  • the example or embodiment having a structure that the embedding part is symmetrical about a line along the radial direction of the substrate is preferable.
  • the magnetic field has a better symmetry characteristic.

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

Abstract

La présente invention concerne un composant d'un générateur, tel qu'un rotor ou un stator, un générateur ayant le composant, qui est particulièrement utilisé pour un wagon de marchandises de chemin de fer, et un procédé de fabrication du composant. Le composant du générateur comprend un substrat ayant une forme de disque ou d'anneau et au moins un aimant fixé au substrat, le substrat comprenant au moins une partie de réception, et le ou les aimants comprenant au moins une partie d'intégration, au moins une partie d'une forme externe de la partie d'intégration correspondant à au moins une partie d'une forme interne de la partie de réception, la ou les parties d'intégration étant reçues dans la partie de réception pour empêcher le ou les aimants de se déplacer par rapport au substrat sur plus d'une étendue prédéterminée dans au moins une direction axiale du substrat.
PCT/CN2017/075754 2017-03-06 2017-03-06 Composant de générateur, générateur ayant le composant et procédé de fabrication du composant WO2018161214A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CN2017/075754 WO2018161214A1 (fr) 2017-03-06 2017-03-06 Composant de générateur, générateur ayant le composant et procédé de fabrication du composant

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Application Number Priority Date Filing Date Title
PCT/CN2017/075754 WO2018161214A1 (fr) 2017-03-06 2017-03-06 Composant de générateur, générateur ayant le composant et procédé de fabrication du composant

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024076871A1 (fr) * 2022-10-05 2024-04-11 Ge Infrastructure Technology Llc Support d'enroulement d'extrémité

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101159390A (zh) * 2006-07-21 2008-04-09 株式会社日立产机系统 凸极式单相电动机及凸极式单相电动机系统
CN103378676A (zh) * 2012-04-26 2013-10-30 西门子公司 转子磁体啮合组件
US20140070656A1 (en) * 2012-09-12 2014-03-13 Abraham Edquiban Ballena Magnet alternator assembly
CN104348278A (zh) * 2013-07-25 2015-02-11 株式会社东芝 旋转电机

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101159390A (zh) * 2006-07-21 2008-04-09 株式会社日立产机系统 凸极式单相电动机及凸极式单相电动机系统
CN103378676A (zh) * 2012-04-26 2013-10-30 西门子公司 转子磁体啮合组件
US20140070656A1 (en) * 2012-09-12 2014-03-13 Abraham Edquiban Ballena Magnet alternator assembly
CN104348278A (zh) * 2013-07-25 2015-02-11 株式会社东芝 旋转电机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024076871A1 (fr) * 2022-10-05 2024-04-11 Ge Infrastructure Technology Llc Support d'enroulement d'extrémité

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