CN101395783B - 用于旋转机械的永磁转子的磁体固定器 - Google Patents

用于旋转机械的永磁转子的磁体固定器 Download PDF

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CN101395783B
CN101395783B CN2006800491666A CN200680049166A CN101395783B CN 101395783 B CN101395783 B CN 101395783B CN 2006800491666 A CN2006800491666 A CN 2006800491666A CN 200680049166 A CN200680049166 A CN 200680049166A CN 101395783 B CN101395783 B CN 101395783B
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chela
fastening part
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CN101395783A (zh
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奥托·帕布斯特
佛朗哥·加德里诺
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Wei Defen Private Ltd
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    • 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]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets
    • 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
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine
    • Y10T29/49012—Rotor

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Wind Motors (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

本发明披露了一种具有永磁转子的简单、低成本、较轻的旋转机械，其包括安装在转子体(1)上的多个永磁组件(20)。永磁组件(20)通过磁体固定器安装，每个磁体固定器均包括通过桥状部(5)相连并形成用于相应的磁体组件(20)的支座的一对钳爪(2、3)。这些钳爪具有末端延伸部(11)，该末端延伸部超过桥状部(5)延伸并形成其中容纳有紧固部分(9)的第二支座。钳爪(2、3)可在末端延伸部(11)被挤压到一起或被迫分开时分别绕桥状部(5)弹性地枢转，允许插入及固定磁体组件。

Description

用于旋转机械的永磁转子的磁体固定器
技术领域
实施例涉及旋转机械，诸如风轮机、绳索驱动及承载运输系统、发电机和电动机、以及为此的永磁体支撑。更具体地，实施例涉及旋转机械转子(诸如风轮机、风力机、发电机、电动机、绳索驱动和承载运输系统等中的转子)中的磁体固定器。
背景技术
在发电及加工旋转机械(诸如风轮机和绳索或缆索驱动及承载运输系统)中，磁场发生器与线圈之间的相对运动产生电流，这些组中的一组安装在转子上而其他组安装在发电机的定子上。磁场发生器通常是绕组，绕组是提供发电机的一小部分输出的电磁体。然而，可改为使用永磁体来提供磁场，当磁体与导体之间发生相对运动时，磁场促使在导体中产生电流。但永磁体相对而言是较重的，并且当用在大型机械中时，用来固定磁体的设备可大量地增添更多不希望的重量，这些设备是难于安装的、对它们可容纳的磁体的尺寸产生限制、或是过分昂贵的。例如，在某些应用中，磁体粘贴于转子体，在压力下涂敷胶水。其他的应用利用高于磁体的端部的冲压制品(stamping)来将它们固定在适当位置。另一些应用采用夹具，每个夹具均具有附着于转子体的下侧的一端及越过该磁体的本体延伸的另一端。
发明内容
在此所披露的实施例克服了现有技术磁体支撑的难点、除去了粘合剂和冲压制品并致使十分简单地附着于转子。此外，实施例的固定器可容纳多种尺寸的磁体并可容易且快速地组装。钳状件(pincer element)用固定器的一端上的两个钳爪来固定磁体或磁体组件。挠性铰接件与钳爪相连并形成产生两个支座(seat)的桥状部。第一支座是其中容纳有磁体组件。另一支座可容纳紧固部分，该紧固部分变紧时迫使钳爪聚到一起，因此使得钳爪抓紧并保持磁体组件。在支座的外侧，固定器包括使得一个固定器能够与邻近的固定器互锁的结构。当固定器没有安装在转子上并且紧固部分被移去或至少变松时，连接端可用来打开钳状件，从而打开钳爪以释放磁体或使得能够插入磁体。有利地，尽管可使用其他材料，固定器可由铝制成，诸如挤压铝材，以节省重量及成本。利用多个在此所披露的类型的磁体固定器，风轮机转子可利用永磁体来建造，且具有相对低的重量、相对低的成本、及更简单的组件。
附图说明
将在参照附图的同时对实施例进行描述。
图1示出了旋转机械(诸如风轮机)的一部分的示意性横截面。
图2示出了穿过根据在此披露的实施例的磁体固定器的示意性局部剖视，其中安装有磁体组件和紧固部分。
图3示出了穿过根据在此披露的实施例的磁体固定器的示意性局部剖视，其中没有安装磁体组件或紧固部分。
具体实施方式
参照图1，旋转机械(诸如风轮机)100包括通过轴承由定子103支撑的转子101。转子101包括支撑诸如图3和图4中所示的多个磁体固定器2的转子体1。优选的磁体固定器2是具有两个钳爪3、4的钳状件，这两个钳爪通过挠性桥状部5相连。钳爪3、4形成支座6，该支座可容纳磁体组件20的一部分。适当的磁体组件20的实例是通过系杆21固定在一起并固定永磁体22的芯板堆(coreplate stack)，如在基于意大利专利申请BZ2005A063的联合未决PCT申请PCT/US/2006中所批露的。钳爪3、4延伸超过桥状部5以形成另一支座8，该支座可容纳用来向着磁体组件20推动钳爪3、4并将磁体固定器固定于转子体1的紧固部分9。更具体地，支座8包括钳爪3、4的末端延伸部11的两个倾斜内平面10。紧固部分9具有相应的倾斜外表面，从而当紧固部分9被拉动远离磁体组件20时迫使钳爪3、4的末端延伸部11分开，使得钳爪3、4绕桥状部5枢转，这迫使用于磁体组件20的支座6关闭。因此，当磁体组件20位于支座6中时，紧固部分9被拉动远离磁体组件20，随之螺钉延伸穿过紧固部分9并进入到转子体1中，以将磁体组件固定到钳状件2中。优选地，紧固部分9由紧固件(诸如螺钉)来拉动。
应该注意的是，钳爪3、4的枢转并不是绕每个点完成的，而是通过钳爪和桥状部的变形来实现的。在该变形期间，桥状部作为有助于使钳爪回到它们的初始位置的弹簧。因此，当末端延伸部移动到一起和分开时，桥状部-钳爪接合并且桥状部自身变形，产生枢转动作。优选地，固定器2形成为挤压铝材，尽管如果希望可使用其他材料或经机械加工的铝。
实施例的转子体1具有安装在其上的多个磁体固定器2，以形成完整的转子。为了更好地将磁体固定器2固定在转子体1上，实施例的每个磁体固定器2均优选地包括凹口12及位于磁体固定器2的相对侧的相应的凸出部13。当安装在转子体1上时，磁体固定器2的凸出部13将被邻近的磁体固定器的凹口12容纳，而凹口12容纳位于相对侧的邻近磁体固定器2的凸出部13。在实施例中，磁体固定器2优选地是由通过挤压而成的铝形成，尽管可采用其他材料和方法。
实施例因此提供了一种用于发电风轮机的简单、相对廉价的永磁转子。为了将磁体组件20设置在磁体固定器2中，钳爪3、4的末端延伸部11优选地在压力等下设置，这使末端延伸部挤压到一起。由于钳爪3、4绕桥状部5枢转，则钳爪3、4的另一端由压力作用而被迫分开。随着钳爪3、4因此打开，磁体组件可插入到支座6中，并且末端延伸部11可被释放以允许钳爪3、4抓紧磁体组件20。紧固部分9于是可插入到另一支座8中，固定器2放置在转子体1上，并且螺钉等穿过转子体1插入并进入到紧固部分9中。当紧固部分9被朝向转子体1拉动以紧靠转子体1固定固定器2时，紧固部分9向延伸部11的平面10施加扩张力，这使得通过钳爪3、4的另一端向磁体组件20施加收缩力，因此在将固定器附着于转子体1的同时固定磁体组件。
尽管已经在发电机、尤其是风能发电机的背景下描述了实施例的转子体1，但应该注意的是，这些实施例可应用为电动机的转子体。此外，如果转子体被线性化，则在不背离本发明的精神的前提下，这些实施例可用在线性电动机或发电机中。
应该理解的是，可希望将以上各公开和其他特征和功能或其替换物结合到许多其他不同的系统或应用中。还应该理解的是，本领域技术人员随后在此做出的各种目前无法预料或不曾预料到的替换物、变形、变体或改进也旨在被所附权利要求所包含。

Claims (15)

1.一种磁体固定器，用在包括定子和具有转子体的转子的旋转机械中，多个磁体固定器安装在所述转子体上，所述磁体固定器容纳磁体组件，每个磁体固定器包括：
两个相对的钳爪，所述钳爪通过桥状部相连；
第一支座，通过所述钳爪形成在所述桥状部的一侧；
第二支座，通过所述钳爪的末端延伸部形成在所述桥状部的另一侧；以及
紧固部分，所述紧固部分部分地被容纳在所述第二支座中，所述紧固部分被构造成当所述紧固部分被拉动远离所述桥状部时向所述末端延伸部施加扩张力，所述扩张力使得所述钳爪绕所述桥状部枢转并从所述钳爪的末端延伸部施加收缩力于所述钳爪的相对端处。
2.根据权利要求1所述的固定器，其特征在于，所述第二支座包括形成在所述末端延伸部的内表面上的相对的倾斜平面，并且所述紧固部分包括相应的倾斜表面。
3.根据权利要求1所述的固定器，其特征在于，一个末端延伸部包括位于其外表面上的凸出部，而另一个末端延伸部包括位于其外表面上的相应的凹口，从而所述凸出部延伸到下一磁体固定器的钳爪的凹口中，而所述凹口容纳前一磁体固定器的钳爪的凸出部。
4.根据权利要求1所述的固定器，其特征在于，所述紧固部分容纳螺钉，所述螺钉在作用于所述末端延伸部上以迫使所述钳爪的相对端朝向彼此的同时穿过所述转子体并将所述磁体固定器附着于所述转子体。
5.根据权利要求1所述的固定器，其特征在于，所述磁体固定器是挤压铝材。
6.根据权利要求1所述的固定器，其特征在于，所述磁体固定器由塑料制成。
7.一种使用磁体固定器的方法，所述方法用在风轮机中，所述风轮机包括定子、具有转子体的转子、所述转子体上的多个磁体固定器、以及所述磁体固定器中的磁体组件，每个磁体固定器包括：
两个相对的钳爪，所述钳爪通过桥状部相连；
第一支座，通过所述钳爪形成在所述桥状部的一侧；
第二支座，通过所述钳爪的末端延伸部形成在所述桥状部的另一侧；以及
紧固部分，所述紧固部分部分地被容纳在所述第二支座中，所述紧固部分被构造成当所述紧固部分被拉动远离所述桥状部时向所述末端延伸部施加扩张力，所述扩张力使得所述钳爪绕所述桥状部枢转并从所述钳爪的末端延伸部施加收缩力于所述钳爪的相对端处；
一种使用每个磁体固定器的方法，包括：
在压力下放置所述钳爪的所述末端延伸部；以及
用所述压力朝向彼此挤压所述末端延伸部，使得所述钳爪绕所述桥状部枢转，进而使所述钳爪的相对端打开。
8.根据权利要求7所述的方法，其特征在于还包括以下步骤：将磁体组件插入到所述第一支座中并释放所述压力，因此允许所述钳爪的相对端抓紧所述磁体组件。
9.一种使用权利要求1中的转子体的方法，其特征在于包括：将所述紧固部分插入到所述第二支座中；将所述磁体固定器放置在所述转子体上；插入螺钉穿过所述转子体并穿过所述紧固部分；以及朝向所述转子体拉动所述紧固部分，从而在将所述磁体固定器固定于所述转子体的同时向所述末端延伸部施加扩张力。
10.一种旋转机械永磁转子，其特征在于包括被支撑在各自的磁体固定器中的多个永磁组件，每个磁体固定器均包括钳状件，所述钳状件具有通过桥状部相接合的两个钳爪，所述钳爪的第一端在所述桥状部的一侧上形成第一支座并接合一个永磁组件，所述钳爪的第二端包括所述钳爪的末端延伸部，所述钳爪的末端延伸部形成容纳紧固部分的第二支座。
11.根据权利要求10所述的旋转机械永磁转子，其特征在于，所述第二支座在所述末端延伸部的内表面上包括相对的倾斜平面，并且所述紧固部分包括相应的倾斜表面，从而当所述紧固部分被朝向所述转子体拉动时，所述紧固部分的倾斜表面有助于使所述末端延伸部的倾斜平面分开，进而使所述钳爪绕所述桥状部枢转并有助于打开所述钳爪的第一端。
12.根据权利要求10所述的旋转机械永磁转子，其特征在于，所述磁体固定器是挤压铝材。
13.根据权利要求10所述的旋转机械永磁转子，其特征在于，所述钳爪的外表面具有的形状与邻近磁体固定器上的相应形状互锁。
14.根据权利要求13所述的旋转机械永磁转子，其特征在于，互锁的形状包括位于一个钳爪的外表面上的凸出部以及位于另一个钳爪的外表面上的凹口，所述凹口与所述凸出部相对应，从而使另一磁体固定器钳爪的凸出部被容纳在所述凹口中，而又一磁体固定器钳爪的凹口容纳所述凸出部。
15.一种磁体固定器，用在具有定子及永磁转子的旋转机械中，所述磁体固定器包括：
两个相对的钳爪，所述钳爪通过桥状部相连；
所述钳爪的第一部分，位于所述桥状部的一侧；
所述钳爪的末端延伸部，位于所述桥状部的另一侧；
第一支座，由所述第一部分形成；
第二支座，由位于所述末端延伸部的内表面上的倾斜平面形成；
紧固部分，包括倾斜表面，所述倾斜表面与所述末端延伸部的倾斜平面相对应并与之接合；以及
紧固件，从转子体连接至所述紧固部分；
从而当所述紧固部分被所述紧固件拉动远离所述桥状部时，所述倾斜表面互相作用以向所述末端延伸部施加扩张力，所述扩张力使得所述钳爪绕所述桥状部枢转并施加收缩力于所述钳爪的第一部分的端部处。
CN2006800491666A 2005-11-29 2006-09-27 用于旋转机械的永磁转子的磁体固定器 Expired - Fee Related CN101395783B (zh)

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EP1964241B1 (en) 2009-12-09
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WO2007063370A1 (en) 2007-06-07
DE602006011055D1 (de) 2010-01-21
CN101395783A (zh) 2009-03-25
ATE451747T1 (de) 2009-12-15
US20090302702A1 (en) 2009-12-10
DK1964241T3 (da) 2010-03-29
US7936102B2 (en) 2011-05-03
ES2339160T3 (es) 2010-05-17
CA2631063A1 (en) 2007-06-07
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NZ568859A (en) 2010-10-29

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