WO2019219985A3 - Permanent magnet assembly comprising three magnet devices with different magnetic domain alignment patterns - Google Patents

Permanent magnet assembly comprising three magnet devices with different magnetic domain alignment patterns Download PDF

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Publication number
WO2019219985A3
WO2019219985A3 PCT/EP2019/073214 EP2019073214W WO2019219985A3 WO 2019219985 A3 WO2019219985 A3 WO 2019219985A3 EP 2019073214 W EP2019073214 W EP 2019073214W WO 2019219985 A3 WO2019219985 A3 WO 2019219985A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic domain
domain alignment
permanent magnet
magnet device
assembly
Prior art date
Application number
PCT/EP2019/073214
Other languages
French (fr)
Other versions
WO2019219985A2 (en
Inventor
Ziad Azar
Richard Clark
Hans-joergen Thougaard
Adriana Cristina Urda
Original Assignee
Siemens Gamesa Renewable Energy A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Gamesa Renewable Energy A/S filed Critical Siemens Gamesa Renewable Energy A/S
Priority to CN201980093925.6A priority Critical patent/CN113508512A/en
Publication of WO2019219985A2 publication Critical patent/WO2019219985A2/en
Publication of WO2019219985A3 publication Critical patent/WO2019219985A3/en

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
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • 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
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • 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
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Wind Motors (AREA)

Abstract

It is described a permanent magnet assembly (360, 460) comprising a first side magnet device (280a), a second side magnet device (280b) and a central magnet device (270, 470) in between. The central magnet device (270, 470) has a spread angular distribution of magnetic domain alignment directions (375, 475) resulting in a focused magnetization defining a focal point (377). Both side magnet devices (280a, 280b) have only a single magnetic domain alignment direction (382a, 382b) resulting in a parallel magnetization. The single magnetic domain alignment direction (382a, 382b) is slanted with respect to a magnetic axis (377a) being defined by the shortest distance between the focal point (377) and a main surface (270a) of the central magnet device (270, 470). It is further described a rotor assembly (150) with such a permanent magnet assembly (360, 460), an electromechanical transducer (140) with such a rotor assembly (150), and a wind turbine (100) with such an electromechanical transducer (140).
PCT/EP2019/073214 2019-03-11 2019-08-30 Permanent magnet assembly comprising three magnet devices with different magnetic domain alignment patterns WO2019219985A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980093925.6A CN113508512A (en) 2019-03-11 2019-08-30 Permanent magnet assembly comprising three magnet arrangements with different magnetic domain alignment patterns

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19161906 2019-03-11
EP19161906.3 2019-03-11

Publications (2)

Publication Number Publication Date
WO2019219985A2 WO2019219985A2 (en) 2019-11-21
WO2019219985A3 true WO2019219985A3 (en) 2020-01-16

Family

ID=65763354

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/073214 WO2019219985A2 (en) 2019-03-11 2019-08-30 Permanent magnet assembly comprising three magnet devices with different magnetic domain alignment patterns

Country Status (2)

Country Link
CN (1) CN113508512A (en)
WO (1) WO2019219985A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3955428A1 (en) * 2020-08-14 2022-02-16 Siemens Gamesa Renewable Energy A/S Magnet assembly comprising a focused magnetic flux portion and a parallel magnetic flux portion
EP4026631A1 (en) * 2021-01-07 2022-07-13 Siemens Gamesa Renewable Energy A/S Apparatus and method for manufacturing a monolithic permanent magnet with a focused and a parallel magnetic flux region
CN112865370A (en) * 2021-03-15 2021-05-28 美的威灵电机技术（上海）有限公司 Motor rotor and motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001178036A (en) * 1999-12-10 2001-06-29 Hitachi Ltd Permanent-magnet dynamo-electric machine
JP2014007796A (en) * 2012-06-21 2014-01-16 Mazda Motor Corp Rotor structure of rotary electric machine
EP2757663A1 (en) * 2013-01-17 2014-07-23 Siemens Aktiengesellschaft Light weight rotor with Halbach magnetized permanent magnets for large external rotor machines
EP3379703A1 (en) * 2015-11-19 2018-09-26 Nitto Denko Corporation Sintered body for forming rare earth magnet, and rare earth permanent magnet obtained by magnetizing said sintered body

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110012463A1 (en) 2007-08-01 2011-01-20 Gerald David Duncan appliance, rotor and magnet element
DE102007056116B4 (en) * 2007-11-15 2011-12-29 Compact Dynamics Gmbh Permanent-magnet electric machine
CN103703523B (en) * 2011-04-13 2015-08-26 巨石风力股份有限公司 Flux concentrating structure for permanent magnets, method of manufacturing such a structure and machine comprising such a structure
FR2975546B1 (en) * 2011-05-16 2014-05-02 Bernard Perriere TURBINE GENERATING ELECTRICAL CURRENT
EP2639936B1 (en) * 2012-03-16 2015-04-29 Siemens Aktiengesellschaft Electrical machine with permanently excited rotor and permanently excited rotor
CA2822158A1 (en) * 2012-08-17 2014-02-17 Envision Energy (Denmark) Aps Electrical machine with magnetic flux intensifier
EP2722855A1 (en) * 2012-10-19 2014-04-23 Siemens Aktiengesellschaft Nd-Fe-B permanent magnet without Dysprosium, rotor assembly, electromechanical transducer, wind turbine
DE112014000526B4 (en) * 2013-01-23 2018-03-01 Mitsubishi Electric Corporation Rotor and rotating electrical machine containing this rotor
US9312057B2 (en) 2013-01-30 2016-04-12 Arnold Magnetic Technologies Ag Contoured-field magnets
DE102013007563A1 (en) * 2013-05-02 2014-11-06 Minebea Co., Ltd. Rotor for an electric machine
CN103560637B (en) * 2013-11-20 2016-05-25 中国人民解放军海军工程大学 A kind of mixed excitation synchronous generator of high power density
JP2015228762A (en) * 2014-06-02 2015-12-17 日東電工株式会社 Permanent magnet, method for manufacturing permanent magnet, rotary electric machine, and method for manufacturing rotary electric machine
WO2016152979A1 (en) 2015-03-24 2016-09-29 日東電工株式会社 Sintered body for forming rare-earth magnet, and rare-earth sintered magnet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001178036A (en) * 1999-12-10 2001-06-29 Hitachi Ltd Permanent-magnet dynamo-electric machine
JP2014007796A (en) * 2012-06-21 2014-01-16 Mazda Motor Corp Rotor structure of rotary electric machine
EP2757663A1 (en) * 2013-01-17 2014-07-23 Siemens Aktiengesellschaft Light weight rotor with Halbach magnetized permanent magnets for large external rotor machines
EP3379703A1 (en) * 2015-11-19 2018-09-26 Nitto Denko Corporation Sintered body for forming rare earth magnet, and rare earth permanent magnet obtained by magnetizing said sintered body

Also Published As

Publication number Publication date
CN113508512A (en) 2021-10-15
WO2019219985A2 (en) 2019-11-21

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