GB2624859A - A rotor - Google Patents

A rotor Download PDF

Info

Publication number
GB2624859A
GB2624859A GB2217713.3A GB202217713A GB2624859A GB 2624859 A GB2624859 A GB 2624859A GB 202217713 A GB202217713 A GB 202217713A GB 2624859 A GB2624859 A GB 2624859A
Authority
GB
United Kingdom
Prior art keywords
rotor
magnets
axis
stator
structures
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.)
Pending
Application number
GB2217713.3A
Other versions
GB202217713D0 (en
Inventor
Hyson Graeme
Odling Simon
Hodgson Jack
Picken Callum
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.)
Yasa Ltd
Original Assignee
Yasa Ltd
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 Yasa Ltd filed Critical Yasa Ltd
Priority to GB2217713.3A priority Critical patent/GB2624859A/en
Publication of GB202217713D0 publication Critical patent/GB202217713D0/en
Priority to PCT/EP2023/083052 priority patent/WO2024110654A1/en
Publication of GB2624859A publication Critical patent/GB2624859A/en
Pending 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
    • H02K1/2793—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
    • H02K1/27—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
    • H02K1/2798—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets where both axial sides of the stator face a rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02—Details
    • H02K21/021—Means for mechanical adjustment of the excitation flux
    • H02K21/022—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator
    • H02K21/025—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator by varying the thickness of the air gap between field and armature
    • H02K21/026—Axial air gap machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • 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
    • H02K7/04—Balancing means

Landscapes

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

Abstract

A rotor (14, figure 4) having a disc-shaped body 62 and an axis of rotation. A plurality of permanent magnets (24, figure 8) are mounted circumferentially about the axis of rotation to a first face of the body. There are one or more structures arranged on a second opposing face of the body, the structures suitable for reducing deflection of the body when the rotor is rotated about the axis. The structures may be radially extending slots, recesses, or grooves 78, or alternatively, counterweights (80, figure 13). The body may comprise a layer of metal laminate (64, figure 9) mounted to a rotor back, the magnets being mounted on or to the laminate via an adhesive join (66, figure 9) between the two. Any interlamination spaces may be filled by a compound, including resin. The rotor may have a support member comprising spokes (120b, figure 17) and an annular part (120a, figure 17) which retain the magnets. The rotor may have a pre-stressed retaining band (124, figure 17) surrounding and preventing radial outward movement of the magnets. The rotor may form part of an axial flux machine having a stator comprising stator bars and a set of windings, there being a gap between the stator and rotor.
GB2217713.3A 2022-11-25 2022-11-25 A rotor Pending GB2624859A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2217713.3A GB2624859A (en) 2022-11-25 2022-11-25 A rotor
PCT/EP2023/083052 WO2024110654A1 (en) 2022-11-25 2023-11-24 A rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2217713.3A GB2624859A (en) 2022-11-25 2022-11-25 A rotor

Publications (2)

Publication Number Publication Date
GB202217713D0 GB202217713D0 (en) 2023-01-11
GB2624859A true GB2624859A (en) 2024-06-05

Family

ID=84889518

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2217713.3A Pending GB2624859A (en) 2022-11-25 2022-11-25 A rotor

Country Status (2)

Country Link
GB (1) GB2624859A (en)
WO (1) WO2024110654A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050218751A1 (en) * 2004-04-05 2005-10-06 Nissan Motor Co., Ltd. Rotor structure
US20080284275A1 (en) * 2007-05-16 2008-11-20 Michael Dowhan Outside rotor electric machine with reduced air gap variation
US20090015110A1 (en) * 2005-01-18 2009-01-15 Daikin Industries, Ltd. Armature, Motor and Compressor and Methods of Manufacturing the Same
CN111917206A (en) * 2020-08-27 2020-11-10 常州高尔登科技有限公司 Self-adaptive weak magnetic disc type motor
KR20210142240A (en) * 2020-05-18 2021-11-25 명화공업주식회사 Motor for shift by wire
CN217115766U (en) * 2022-04-14 2022-08-02 胡积献 Axial magnetic field motor rotor disc
WO2022223798A1 (en) * 2021-04-23 2022-10-27 Yasa Limited Rotor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050218751A1 (en) * 2004-04-05 2005-10-06 Nissan Motor Co., Ltd. Rotor structure
US20090015110A1 (en) * 2005-01-18 2009-01-15 Daikin Industries, Ltd. Armature, Motor and Compressor and Methods of Manufacturing the Same
US20080284275A1 (en) * 2007-05-16 2008-11-20 Michael Dowhan Outside rotor electric machine with reduced air gap variation
KR20210142240A (en) * 2020-05-18 2021-11-25 명화공업주식회사 Motor for shift by wire
CN111917206A (en) * 2020-08-27 2020-11-10 常州高尔登科技有限公司 Self-adaptive weak magnetic disc type motor
WO2022223798A1 (en) * 2021-04-23 2022-10-27 Yasa Limited Rotor
CN217115766U (en) * 2022-04-14 2022-08-02 胡积献 Axial magnetic field motor rotor disc

Also Published As

Publication number Publication date
GB202217713D0 (en) 2023-01-11
WO2024110654A1 (en) 2024-05-30

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