JP2006254638A - 回転電機及び風力発電システム - Google Patents
回転電機及び風力発電システム Download PDFInfo
- Publication number
- JP2006254638A JP2006254638A JP2005070260A JP2005070260A JP2006254638A JP 2006254638 A JP2006254638 A JP 2006254638A JP 2005070260 A JP2005070260 A JP 2005070260A JP 2005070260 A JP2005070260 A JP 2005070260A JP 2006254638 A JP2006254638 A JP 2006254638A
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- JP
- Japan
- Prior art keywords
- rotor
- stator
- permanent magnet
- electric machine
- pole piece
- 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.)
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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
- H02K1/2706—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]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- 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
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- 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)
- Manufacturing & Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
永久磁石式回転電機特に風力発電用永久磁石式回転電機において誘導起電力波形の歪み率を低減することである。
【解決手段】
本発明は、風力発電用回転電機において、分布巻巻線を施す、固定子スロット構造と、永久磁石を持った回転子磁極構造からなり、毎極毎相スロット数を極数Pとして3Pで割り切れない数に選定し、ポールピース幅Tpを永久磁石回転子の隣り合う最外径極中心間の距離Trで、ポールピース幅Tpを除算した極幅率Pwが、Pw≦0.6,0.67≦
Pw≦0.71,0.78≦Pwのいずれかの範囲でポールピース4の幅Tpを選択することが望ましい。
【選択図】図7
Description
rpm の回転数を許容する。固定子1は、固定子ティース12にコイル10を分布的に巻いた分布巻固定子となっている。コイル10はUVWの3相巻線が施されており54スロットで6極が電気的に作られるように配置されている。またコイル10は固定子ティース
12の間の固定子スロット13に上コイル8,下コイル9のように配置されている。第1実施例においてコイル10は分布巻と呼ばれる方式で巻かれており、これが周方向に続き3相巻線を形成している。固定子1の中心には回転子2が回転可能に配置されている。回転子2では永久磁石3が回転子鉄心5とポールピース4で挟まれて配置されている。また、回転子鉄心5はシャフト6に接続されている。また、極間に永久磁石3が周方向に動かないようにするために極間保持材7を配置する。極間保持材7はアルミあるいは銅のような非磁性体を用いることが望ましい。
Nsを極数Pと相数Nで除算した毎極毎相スロット数Nspp が割り切れないように選択することを意味する。
Nspp を整数でない数に選択すると、波形歪み率を小さくすることができることが分かったが、特に今回の実施例2,3のようにNspp を3.5,2.5となる場合が歪み率低減の効果が高い。また、誘導起電力波形歪み率は、実施例1の回転子2のポールピース4の幅を適切に選択することでも低減が可能である。図7に実施例1の補足説明図を示す。
0.78≦Pwのいずれかの範囲でポールピース4の幅Tpを選択することが望ましい。また、図8からTpを上記範囲とするとひずみ低減効果が顕著に発揮できることが分かる。また、図9に示すように、ポールピース4の幅Tpを図8で示した幅となるようにダンパバー91をポールピース4にもうけてもよい。
Claims (10)
- コイルが巻かれた固定子と回転可能に支持された回転子とを備え、前記回転子と前記固定子の間にギャップを有し、前記回転子は永久磁石を備え、ポールピースの幅Tpを前記回転子の隣り合う最外径極中心間の距離Trで除算した極幅率Pwが、Pw≦0.6,
0.67≦Pw≦0.71,0.78≦Pw のいずれかの関係を満足することを特徴とする回転電機。 - 請求項1において、前記固定子のスロット数をNs、前記固定子のコイルの相数をN、前記固定子の極数をPとすると、NsをPとNで除算したときに割り切れない数としたことを特徴とする回転電機。
- 請求項2において、Ns/(P・N)が2.5または3.5となることを特徴とする回転電機。
- 請求項1において、前記コイルは分布巻きにより巻かれ、前記回転子の各々の極は、ポールピースと回転子鉄心によって前記永久磁石を挟み、極間に非磁性部材を配置したことを特徴とする回転電機。
- コイルが巻かれた固定子と回転可能に支持された回転子とを備え、前記回転子と固定子の間にギャップを有し、前記回転子は永久磁石及び永久磁石の外周側に磁性体からなるポールピースを備え、前記ポールピースは外周側に略円弧形状の部分を有し、前記ポールピースの略円弧形状の部分の半径R2よりも前記回転子の最外周部の半径R1が大きいことを特徴とする回転電機。
- 請求項5において、前記ポールピースの略円弧形状の部分の半径R2に対する前記回転子の最外周部の半径R1の比率が0.9以下であることを特徴とする回転電機。
- 請求項5において、前記固定子のスロット数をNs、前記固定子のコイルの相数をN、前記固定子の極数をPとすると、NsをPとNで除算したときに割り切れない数としたことを特徴とする回転電機。
- 請求項5において、前記固定子のスロット数をNs、前記固定子のコイルの相数をN、前記固定子の極数をPとすると、NsをPとNで除算したときに割り切れない数としたことを特徴とする回転電機。
- 請求項5において、Ns/(P・N)が2.5または3.5となることを特徴とする回転電機。
- 巻線が巻かれた固定子と回転可能に支持された回転子とを備え、前記回転子と前記固定子の間にギャップを有し、前記回転子は永久磁石を備え、ポールピースの幅Tpを前記回転子の隣り合う最外径極中心間の距離Trで除算した極幅率Pwが、Pw≦0.6,0.67≦Pw≦0.71,0.78≦Pwのいずれかの関係を満足する永久磁石式回転電機と、前記回転子を回転させる動力を発生する風車とを備える風力発電システム。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005070260A JP4434045B2 (ja) | 2005-03-14 | 2005-03-14 | 回転電機及び風力発電システム |
CNA2005101191878A CN1835350A (zh) | 2005-03-14 | 2005-12-19 | 旋转电机及风力发电系统 |
EP06003063.2A EP1703623B1 (en) | 2005-03-14 | 2006-02-15 | An electrical rotation machine and a wind turbine system |
KR1020060015682A KR20060100926A (ko) | 2005-03-14 | 2006-02-17 | 회전전기 및 풍력발전시스템 |
US11/356,111 US7498707B2 (en) | 2005-03-14 | 2006-02-17 | Electrical rotation machine and a wind turbine system |
US12/388,189 US7737593B2 (en) | 2005-03-14 | 2009-02-18 | Electrical rotation machine and a wind turbine system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005070260A JP4434045B2 (ja) | 2005-03-14 | 2005-03-14 | 回転電機及び風力発電システム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006254638A true JP2006254638A (ja) | 2006-09-21 |
JP4434045B2 JP4434045B2 (ja) | 2010-03-17 |
Family
ID=36609322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005070260A Expired - Fee Related JP4434045B2 (ja) | 2005-03-14 | 2005-03-14 | 回転電機及び風力発電システム |
Country Status (5)
Country | Link |
---|---|
US (2) | US7498707B2 (ja) |
EP (1) | EP1703623B1 (ja) |
JP (1) | JP4434045B2 (ja) |
KR (1) | KR20060100926A (ja) |
CN (1) | CN1835350A (ja) |
Cited By (12)
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JP4725684B1 (ja) * | 2010-08-10 | 2011-07-13 | 株式会社安川電機 | 発電機および風力発電システム |
WO2011053472A3 (en) * | 2009-10-30 | 2011-08-11 | Louis Finkle | Electric motor and/or generator with mechanically tuneable permanent magnetic field |
WO2011053473A3 (en) * | 2009-10-30 | 2011-08-11 | Louis Finkle | Reconfigurable inductive to synchronous motor |
JP2013005487A (ja) * | 2011-06-13 | 2013-01-07 | Toyota Motor Corp | 電磁石型回転電機 |
JP2013013250A (ja) * | 2011-06-29 | 2013-01-17 | Mitsuba Corp | 3相誘導電動機 |
US8952587B2 (en) | 2009-10-30 | 2015-02-10 | Louis J. Finkle | Windmill generator with mechanically tuneable permanent magnetic field |
US9419504B2 (en) | 2012-04-20 | 2016-08-16 | Louis J. Finkle | Hybrid induction motor with self aligning permanent magnet inner rotor |
US9484794B2 (en) | 2012-04-20 | 2016-11-01 | Louis J. Finkle | Hybrid induction motor with self aligning permanent magnet inner rotor |
US9923440B2 (en) | 2014-01-09 | 2018-03-20 | Motor Generator Technology, Inc. | Hybrid electric motor with self aligning permanent magnet and squirrel cage rotors |
US9923439B2 (en) | 2014-01-09 | 2018-03-20 | Motor Generator Technology, Inc. | Hybrid electric motor with self aligning permanent magnet and squirrel cage rotors |
US10476363B2 (en) | 2014-01-09 | 2019-11-12 | Louis J. Finkle | Hybrid electric motor with self aligning permanent magnet and squirrel cage dual rotors magnetically coupled with permeant magnets and bars at synchronous speed |
US10998802B2 (en) | 2017-02-21 | 2021-05-04 | Louis J. Finkle | Hybrid induction motor with self aligning hybrid induction/permanent magnet rotor |
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DE102007011261A1 (de) * | 2007-03-06 | 2008-09-11 | Vensys Energy Ag | Generator für Windenergieanlagen |
US7939958B2 (en) * | 2007-06-01 | 2011-05-10 | Bill Todorof | Direct drive wind turbine and blade assembly |
US8344569B2 (en) | 2009-05-14 | 2013-01-01 | Vensys Energy Ag | Generator for wind power installations |
DE102010029514A1 (de) * | 2010-05-31 | 2011-12-01 | Robert Bosch Gmbh | Elektrische Maschine mit reduzierter Geräuschentwicklung |
US8632251B2 (en) | 2010-06-24 | 2014-01-21 | Schaeffler Technologies AG & Co. KG | Bearing closure/shield for current passage in electric equipment |
US8749103B2 (en) * | 2010-09-15 | 2014-06-10 | Remy Technologies, L.L.C. | Permanent magnet rotor for electric machine |
US9172279B2 (en) * | 2011-02-04 | 2015-10-27 | Mitsubishi Electric Corporation | Automotive embedded permanent magnet rotary electric machine |
DK2786468T3 (en) | 2011-11-30 | 2019-04-23 | Abb Research Ltd | ELECTRICAL MACHINES AND ROTORS FOR ELECTRIC MACHINES |
US8992091B2 (en) | 2012-05-11 | 2015-03-31 | Schaeffler Technologies AG & Co. KG | Closure design of a conductive rubber material for allowing current passage through a bearing in electric machines |
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US4190779A (en) * | 1976-05-04 | 1980-02-26 | Ernest Schaeffer | Step motors |
EP0655823B1 (en) * | 1992-08-12 | 1999-01-27 | Seiko Epson Corporation | Method of driving a brushless dc motor |
JP3308828B2 (ja) * | 1996-10-18 | 2002-07-29 | 株式会社日立製作所 | 永久磁石回転電機及びそれを用いた電動車両 |
US6087751A (en) * | 1997-07-01 | 2000-07-11 | Kabushiki Kaisha Toshiba | Reluctance type rotating machine with permanent magnets |
US6274960B1 (en) * | 1998-09-29 | 2001-08-14 | Kabushiki Kaisha Toshiba | Reluctance type rotating machine with permanent magnets |
US6127739A (en) * | 1999-03-22 | 2000-10-03 | Appa; Kari | Jet assisted counter rotating wind turbine |
JP2000350393A (ja) * | 1999-03-29 | 2000-12-15 | Shin Etsu Chem Co Ltd | 永久磁石モータ |
JP2001069735A (ja) | 1999-08-31 | 2001-03-16 | Toshiba Corp | 永久磁石式リラクタンス型回転電機 |
JP3513467B2 (ja) * | 2000-06-16 | 2004-03-31 | ファナック株式会社 | 同期電動機のロータ |
JP2002101628A (ja) * | 2000-09-22 | 2002-04-05 | Hitachi Ltd | 永久磁石式回転電機 |
US6856051B2 (en) * | 2001-10-03 | 2005-02-15 | Delphi Technologies, Inc. | Manufacturing method and composite powder metal rotor assembly for circumferential type interior permanent magnet machine |
US7230359B2 (en) | 2002-03-22 | 2007-06-12 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Electric motor with poles shaped to minimize cogging torque |
DE10394041T5 (de) * | 2003-01-15 | 2005-12-22 | Mitsubishi Denki K.K. | Permanentmagnetmotor |
US7042127B2 (en) * | 2003-04-02 | 2006-05-09 | Nidec Sankyo Corporation | Permanent magnet embedded motor |
JP2005006425A (ja) * | 2003-06-12 | 2005-01-06 | Neomax Co Ltd | 風力発電機とその設計方法 |
DE202004016534U1 (de) * | 2003-11-05 | 2005-01-05 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Elektromotor |
-
2005
- 2005-03-14 JP JP2005070260A patent/JP4434045B2/ja not_active Expired - Fee Related
- 2005-12-19 CN CNA2005101191878A patent/CN1835350A/zh active Pending
-
2006
- 2006-02-15 EP EP06003063.2A patent/EP1703623B1/en not_active Expired - Fee Related
- 2006-02-17 US US11/356,111 patent/US7498707B2/en active Active
- 2006-02-17 KR KR1020060015682A patent/KR20060100926A/ko not_active Application Discontinuation
-
2009
- 2009-02-18 US US12/388,189 patent/US7737593B2/en not_active Expired - Fee Related
Cited By (16)
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RU2543992C2 (ru) * | 2009-10-30 | 2015-03-10 | Льюис ФИНКЛ | Реконфигурируемый синхронно-асинхронный двигатель |
WO2011053473A3 (en) * | 2009-10-30 | 2011-08-11 | Louis Finkle | Reconfigurable inductive to synchronous motor |
WO2011053472A3 (en) * | 2009-10-30 | 2011-08-11 | Louis Finkle | Electric motor and/or generator with mechanically tuneable permanent magnetic field |
US8952587B2 (en) | 2009-10-30 | 2015-02-10 | Louis J. Finkle | Windmill generator with mechanically tuneable permanent magnetic field |
US8288908B2 (en) | 2009-10-30 | 2012-10-16 | Finkle Louis J | Reconfigurable inductive to synchronous motor |
US8987968B2 (en) | 2010-08-10 | 2015-03-24 | Kabushiki Kaisha Yaskawa Denki | Power generator and wind power generation system |
JP2012039811A (ja) * | 2010-08-10 | 2012-02-23 | Yaskawa Electric Corp | 発電機および風力発電システム |
JP4725684B1 (ja) * | 2010-08-10 | 2011-07-13 | 株式会社安川電機 | 発電機および風力発電システム |
JP2013005487A (ja) * | 2011-06-13 | 2013-01-07 | Toyota Motor Corp | 電磁石型回転電機 |
JP2013013250A (ja) * | 2011-06-29 | 2013-01-17 | Mitsuba Corp | 3相誘導電動機 |
US9419504B2 (en) | 2012-04-20 | 2016-08-16 | Louis J. Finkle | Hybrid induction motor with self aligning permanent magnet inner rotor |
US9484794B2 (en) | 2012-04-20 | 2016-11-01 | Louis J. Finkle | Hybrid induction motor with self aligning permanent magnet inner rotor |
US9923440B2 (en) | 2014-01-09 | 2018-03-20 | Motor Generator Technology, Inc. | Hybrid electric motor with self aligning permanent magnet and squirrel cage rotors |
US9923439B2 (en) | 2014-01-09 | 2018-03-20 | Motor Generator Technology, Inc. | Hybrid electric motor with self aligning permanent magnet and squirrel cage rotors |
US10476363B2 (en) | 2014-01-09 | 2019-11-12 | Louis J. Finkle | Hybrid electric motor with self aligning permanent magnet and squirrel cage dual rotors magnetically coupled with permeant magnets and bars at synchronous speed |
US10998802B2 (en) | 2017-02-21 | 2021-05-04 | Louis J. Finkle | Hybrid induction motor with self aligning hybrid induction/permanent magnet rotor |
Also Published As
Publication number | Publication date |
---|---|
KR20060100926A (ko) | 2006-09-21 |
EP1703623B1 (en) | 2014-12-24 |
US20060202581A1 (en) | 2006-09-14 |
JP4434045B2 (ja) | 2010-03-17 |
US20090160284A1 (en) | 2009-06-25 |
EP1703623A2 (en) | 2006-09-20 |
US7737593B2 (en) | 2010-06-15 |
EP1703623A3 (en) | 2008-08-27 |
US7498707B2 (en) | 2009-03-03 |
CN1835350A (zh) | 2006-09-20 |
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