WO2008067705A1 - Générateur à aimant permanent à rotor interne multipôles - Google Patents

Générateur à aimant permanent à rotor interne multipôles Download PDF

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Publication number
WO2008067705A1
WO2008067705A1 PCT/CN2007/002120 CN2007002120W WO2008067705A1 WO 2008067705 A1 WO2008067705 A1 WO 2008067705A1 CN 2007002120 W CN2007002120 W CN 2007002120W WO 2008067705 A1 WO2008067705 A1 WO 2008067705A1
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WIPO (PCT)
Prior art keywords
rotor
stator
permanent magnet
assembly
magnet generator
Prior art date
Application number
PCT/CN2007/002120
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English (en)
French (fr)
Inventor
Henglin Xiao
Original Assignee
Wuxi Kipor Power Co., Ltd
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Publication date
Application filed by Wuxi Kipor Power Co., Ltd filed Critical Wuxi Kipor Power Co., Ltd
Publication of WO2008067705A1 publication Critical patent/WO2008067705A1/zh

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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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • 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]

Definitions

  • the invention relates to a multi-pole inner rotor type permanent magnet generator, which is particularly suitable for a small and light-weight medium and high power generator set, and belongs to the technical field of generators.
  • the permanent magnet generator is mainly composed of a stator assembly and a rotor assembly.
  • Rare earth permanent magnets are usually used in electric motors or low-power generators, or in low-power start/power motors, and rare earth permanent magnets are used in generators.
  • a permanent magnet type rotating motor capable of fixing a permanent magnet to an outer rotor magnet insertion hole simply, reliably and firmly as disclosed in CN01112432.6; and when a permanent magnet is used for an inner rotor motor, generally used on a rotor surface
  • a sintered permanent magnet as disclosed in the application number: CN02803440.6; the permanent magnet is also fixed to the rotor surface by bolts or by dovetail grooves, as disclosed in the patent number CN200420083544.0.
  • the above-mentioned outer rotor type permanent magnet motor cannot be made into medium and large power, and can be used only in a small power range.
  • the above inner rotor type permanent magnet motor uses a bearing, and the motor cannot be miniaturized, lightened, and thinned, and the manufacturing cost cannot be effectively reduced.
  • the object of the present invention is to overcome the above-mentioned deficiencies, and to provide a multi-pole inner rotor type permanent magnet generator, which adopts a stator assembly in which a plurality of sets of coils are embedded and directly fixed on a stator seat of an engine assembly, without using a casing.
  • the rotor assembly is embedded with a plurality of pairs of permanent magnets of at least two pairs in the circumference, and is directly fixed on the rotating body of the engine, which can prevent the rare earth permanent magnet from falling off during rotation, and adopts a bearingless structure to realize the generator. It is thinner, lighter, and smaller, and achieves high output efficiency and high power output. '
  • the invention comprises a stator assembly and a rotor assembly comprising a permanent magnet generator, characterized in that the stator assembly provided with a plurality of sets of coils is directly fixed on the stator assembly of the engine assembly, and the outer circumference of the outer circumference of the rotor assembly is inlaid with at least A plurality of pairs of permanent magnets of two or more pairs are directly fixed to the rotating body of the engine assembly
  • the stator body bore of the stator assembly is concentric with the rotor center of the rotor assembly, and a gap is left between the stator body bore of the stator assembly and the rotor outer circle of the rotor assembly.
  • a permanent magnet housing groove is arranged, and a plurality of pairs of permanent magnets are embedded in the permanent magnet housing groove with a certain distance from the outer ring, and the permanent magnet is a neodymium iron boron permanent magnet.
  • the rotor body of the rotor assembly of the present invention is provided with a rotor venting hole and a rotor positioning hole.
  • stator body of the stator assembly of the present invention is provided with stator slots parallel to the center of the engine rotating body.
  • the coil in the stator slot of the stator body of the present invention is wound into a Y-shape of a three-phase four-wire type or a ⁇ shape of a three-phase three-wire system.
  • the rotating body of the engine of the present invention may employ a flywheel or a crankshaft or a rotor seat.
  • the present invention has a certain distance between the rare earth permanent magnet and the outer ring of the rotor assembly in the rotor body circumference, which can ensure that the magnetic yoke on the outer side of the rare earth permanent magnet has sufficient strength, and the rare earth permanent magnet does not fall off when the rotor rotates. In order to prevent accidents, the reliability of the generator is effectively improved, and it is not necessary to worry about the reliability of the generator. 2. Since the stator assembly replaces part or all of the flywheel of the engine, the weight of the unit is reduced, and the overall efficiency of the generator set is reduced.
  • Figure 1 is a schematic view showing the assembly of the generator set of the present invention
  • FIG. 2 is a schematic structural view of a stator and a rotor assembly of the present invention
  • Figure 3 is a cross-sectional view taken along line A-A of the present invention.
  • Figure 4 is a stator punching diagram of the present invention
  • Figure 5 is a view of the rotor punching sheet of the present invention
  • Fig. 6 is a schematic view showing the distribution of the S pole and the N pole of the permanent magnet in the rotor assembly of the present invention.
  • the embodiment mainly comprises an engine assembly 1, a stator seat 2, a rotor seat 3, a rotor assembly 4, a bolt 5, a stator assembly 6, a bolt 7, a stator seat positioning port 8, a rotor seat positioning port 9, and a stator positioning circle 10.
  • stator bolt hole 11 stator winding 12 , rotor bolt hole 13 , rotor vent hole 14 , permanent magnet 15 , first permanent magnet baffle 16 , baffle fixing bolt 17 , rivet 18 , rotor rotation center 19 , rotor positioning circle 20, the gap 21, the rotor punching piece 22, the second permanent magnet baffle 23, the stator punching piece 24, the stator self-retaining groove 25, the stator wire groove 26, the stator body hole 27, the rotor outer ring 28, the baffle bolt hole 29,
  • the rivet hole 30, the magnetic shielding groove 31, the permanent magnet housing groove 32, the insert piece 33, the engine rotating body 34, and the like are formed.
  • the multi-pole inner rotor type permanent magnet generator of the present invention is composed of a stator assembly 6 and a rotor assembly 4. Wherein the rotor assembly 4 is surrounded by at least two pairs of inner rings in the outer ring of the rotor (including two pairs).
  • the plurality of pairs of permanent magnets 15 are matched by the inner positioning circle 20 of the rotor and the rotor seat positioning port 9 and are clamped by a plurality of bolts 5 Mounted directly on the rotor base 3..
  • the rotating body 34 of the engine may employ a flywheel or a crankshaft or a rotor seat.
  • the rotor seat 3 is fixed to the flywheel of the engine or integrally formed with the flywheel to rotate synchronously with the crankshaft of the engine, and the rotor center of rotation 19 coincides with the center of the crankshaft of the engine.
  • the stator assembly 6 provided with a plurality of sets of stator windings 12 is engaged with the stator seat positioning port 8 through the stator positioning circle 10 and fixedly mounted on the stator base 2 of the engine assembly 1 by a plurality of bolts 7, and the stator seat positioning port 8 is disposed. On the stator base 2.
  • the stator inner hole 27 is concentrically mounted with the rotor body rotation center 19, and a certain gap 21 is left between the stator body hole 27 and the rotor outer circle 28, which is a gap reduction caused by the expansion of the stator assembly 6 and the rotor assembly 4 after being heated. There is room to prevent damage caused by the rotor assembly 4 rubbing against the stator bore 27 as the engine crankshaft rotates.
  • the stator body of the stator assembly 6 of the present invention is formed by the stator punching piece 24 being concentrically stacked by the stator self-retaining groove 25, and the stator bolt fixing hole 11 is provided with the stator bolt fixing hole 11 and the inner circumference thereof.
  • the stator windings 12 in the stator slot 26 are respectively wound into three-phase four-wire Y type or three-phase three-wire type ⁇ type.
  • Each of the stator windings 12 of the stator slot 26 of the stator assembly 6 of the present invention is inlaid in the stator slot 26 with two slots, so that each set of stator windings 12 has the same length and saves the use of the enameled wire of the coil. Quantity, reduce manufacturing costs.
  • the rotor body of the rotor assembly 4 of the present invention is formed by a rivet 18 which is concentrically riveted by rivet holes 30 by means of rivets 18 which are provided with a plurality of permanent magnet accommodating grooves 32 in the outer circumference of the outer ring.
  • a rotor bolt hole 13, a rotor vent hole 14, and a rotor positioning hole 20 are provided in the rotor punching piece 22 of the rotor body.
  • a permanent magnet housing groove 32 is provided in the inner circumference of the rotor outer ring to accommodate the permanent magnet 15.
  • the permanent magnet receiving groove 32 is parallel to the rotor center rotation center 19 and perpendicular to the radial direction of the rotor body.
  • the first permanent magnet baffle 16 and the second permanent magnet baffle 23 are fixed to the ends of the permanent magnet 15 by the baffle fixing bolts 17 through the baffle bolt holes 29.
  • the first and second permanent magnet baffles 16, 23 mainly prevent accidents in which the permanent magnets fly out during rotation, and also have a magnetic separation effect.
  • the outer circumference of the rotor 28 is provided with a magnetic blocking groove 31 for blocking the magnetic circuit bypass between the permanent magnets 15, thereby improving the efficiency of the generator.
  • the rotor assembly 4 has a permanent magnet housing groove 32 around the outer circumference of the rotor, and a plurality of pairs of even permanent magnets 15 are embedded in the permanent magnet housing groove 32 at a certain distance from the outer ring.
  • the polarity of the permanent magnet iron 15 is alternately arranged along the outer circumference 28 of the rotor.
  • the permanent magnet 15 is formed into a rectangular parallelepiped shape, and the permanent magnet 15 is a neodymium iron boron permanent magnet.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Description

一种多极内转子式永磁发电机 技术领域
本发明涉及一种多极内转子式永磁发电机， 具体地说特别适用于小型 化、 轻量化的中大功率的发电机组， 属于发电机技术领域。
背景技术
目前， 在已有技术中， 永磁发电机主要由定子总成及转子总成等组成。 通常采用稀土永磁铁应用于电动机或小功率的发电机中， 或者用于小功率的 起动 /发电两用电机中， 且稀土永磁铁应用于发电机时大均以外转子式。如专 利号为 CN01112432.6所公开一种能够简单、 可靠且牢固地把永磁铁固定在 外转子磁铁插入孔的永久磁铁式转动电机； 而当永磁铁用于内转子电机时， 一般采用在转子表面烧结永磁铁， 如申请号为： CN02803440.6所公开的； 也 有用螺栓或用燕尾槽将永磁铁固定在转子表面， 如专利号为 CN200420083544.0所公开的。上述外转子式永磁电机不能制成中大功率，只 能在小功率范围使用，上述内转子式永磁电机使用轴承，不能使电机小型化、 轻量化、 薄型化， 制造成本不能有效降低。
发明内容
本发明的目的在于克服上述不足之处，从而提供一种多极内转子式永磁 发电机，其采用定子总成镶嵌有多组线圈，直接固定在发动机总成定子座上， 不采用机壳； 转子总成在周圈镶嵌有至少二对级的若干对级永磁铁， 并直接 固定在发动机的旋转体上， 能避免稀土永磁铁在旋转时脱落， 采用无轴承结 构， 实现了发电机的薄型化、 轻量化和小型化， 而且可实现高输出效率和高 功率输出。 '
本发明的主要解决方案是这样实现的：
本发明由定子总成及转子总成组成永磁发电机，特征是设有若干组线圈 的定子总成直接固定在发动机总成定子座上， 转子总成的转子体外圈内环周 镶嵌有至少二对级以上的若干对级永磁铁直接固定在发动机总成的旋转体 上， 定子总成的定子体内孔与转子总成的转子体旋转中心同心， 定子总成的 定子体内孔与转子总成的转子体外圆之间留有间隙。
本发明转子总成的转子体上外圈内环周设有永磁体收纳槽， 永磁体收纳 槽中镶嵌有若干对级永磁铁与其外圈设有一定距离，永磁铁为钕铁硼永磁铁。
本发明的转子总成的转子体上设有转子通风孔、 转子定位孔。
本发明定子总成的定子体内侧周圈设有平行于发动机旋转体中心的定子 线槽。
本发明定子体定子线槽内的线圈绕制成三相四线制的 Y型形状或三相三 线制的△形状。
本发明发动机的旋转体可以采用飞轮或曲轴或转子座。
本发明与已有技术相比具有以下优点-
1、本发明由于在转子总成转子体环周镶嵌有多个稀土永磁铁与其外圈有 一定距离， 能保证稀土永磁铁外侧的磁扼有足够的强度， 在转子旋转时稀土 永磁铁不致脱落， 以防事故发生， 发电机的可靠性得到有效提高， 不必为发 电机的可靠性担忧； 2、 由于定子总成代替部分乃至全部发动机的飞轮，减轻 机组的重量， 使发电机组整体轻量化， 并能降低制造成本； 3、 由于转子总成 上开有通孔， 能提高发电机的散热性能和减轻发电机的重量， 以增加发电机 的可靠性和寿命， 并防止永磁铁在高温时退磁现象的发生以及能制成较大的 电功率输出； 4、 由于发动机的旋转体可以采用飞轮或曲轴， 也可以采用转子 座，能适用于不同功率的发电机组， 以及与多种发动机相配套，应用广泛； 5、 结构紧凑、 简单， 最大限度地薄型化、 小型化和轻量化， 并提供合理的冷却 能作大功率的输出； 6、用途广， 不仅仅局限于单相输出的发电机组中， 还可 用于三相输出的发电机组中， 输出大功率的电力；
附图说明
图 1为本发明的发电机组装配示意图；
图 2为本发明的定子、 转子总成结构示意图；
图 3为本发明的 A- A剖视图；
图 4为本发明的定子冲片图；
图 5为本发明的转子冲片图； 图 6为本发明转子总成中永磁铁 S极、 N极分布示意图。
具体实施方式
下面本发明将结合附图中的实施例作进一步描述：
本实施例主要由发动机总成 1、 定子座 2、 转子座 3、 转子总成 4、 螺栓 5、 定子总成 6、 螺栓 7、 定子座定位口 8、 转子座定位口 9、 定子定位圆 10、 定子螺栓孔 11、 定子绕组 12、 转子螺栓孔 13、 转子通风孔 14、 永磁铁 15、 第一永磁铁档板 16、 档板固定螺栓 17、 铆钉 18、 转子旋转中心 19、 转子内 定位圆 20、 间隙 21、 转子冲片 22、 第二永磁铁档板 23、 定子冲片 24、 定子 自扣槽 25、 定子线槽 26、 定子体内孔 27、 转子体外圆 28、 档板螺栓孔 29、 铆钉孔 30、 阻磁槽 31、 永磁铁收纳槽 32、 插片 33及发动机旋转体 34等组 成。
如图 1、 图 2、 图 3所示： 本实施例为本实用新型与发动机总成 1组成一 发电机组。 本发明的多极内转子式永磁发电机由定子总成 6及转子总成 4组 成。 其中转子总成 4转子体外圈内环周镶嵌有至少二对级 （含二对级） 以上 若干对级永磁铁 15通过转子内定位圆 20与转子座定位口 9配合并用多个螺 栓 5将其直接固定安装在发动机总成 1上的发动机旋转体 34的转子座 3..上 (发 动机的旋转体 34可以采用飞轮或曲轴或转子座）。 转子座 3固定到发动机的 飞轮上或与飞轮制成一体与发动机的曲轴同步旋转， 且使转子旋转中心 19 与发动机的曲轴的中心重合。设有若干组定子绕组 12的定子总成 6通过定子 定位圆 10与定子座定位口 8配合并用多个螺栓 7将其固定安装在发动机总成 1上定子座 2上， 定子座定位口 8设置在定子座 2上。定子内孔 27与转子体 旋转中心 19同心安装，定子体内孔 27与转子体外圆 28之间留有一定的间隙 21， 为定子总成 6及转子总成 4受热后膨胀引起的间隙减小留有余地， 以防 止转子总成 4随发动机曲轴旋转时摩擦定子内孔 27而引起的损坏。
图 4所示： 本发明定子总成 6的定子体由定子冲片 24通过定子自扣槽 25同心叠加而成，在定子体定子冲片 24上设有定子螺栓固定孔 11及与其内 侧周圈平行于发动机旋转体中心 19， 并设有面对转子体的定子内孔 27上开 口的定子线槽 26及定子定位圆 10; 若干缉定子绕组 12镶嵌在定子线槽 26 内，并采用插片 33封闭。定子线槽 26内的定子绕组 12分别绕制成三相四线 制的 Y型或三相三线制的△型。
本发明定子总成 6的定子线槽 26中每组定子绕组 12为隔二槽镶嵌在定 子线槽 26中， 这样能使每组定子绕组 12具有相同的长度并节省绕制线圈的 漆包线的使用量， 降低制造成本。
图 5所示:本发明转子总成 4的转子体采用外圈内沿圆周方向环周设有 若干个永磁铁收纳槽 32的转子冲片 22用铆钉 18通过铆钉孔 30同心铆接组 成。 在转子体的转子冲片 22上设有转子螺栓孔 13、 转子通风孔 14、 转子定 位孔 20。 转子体外圈内环周设有永磁铁收纳槽 32收纳永磁铁 15。 永磁铁收 纳槽 32与转子体旋转中心 19平行， 并与转子体的径向垂直。 采用档板固定 螺栓 17通过档板螺栓孔 29固定在永磁铁 15两端的有第一永磁铁档板 16和 第二永磁铁档板 23。 第一和第二永磁铁档板 16、 23主要是防止永磁铁在旋 转时飞出而发生事故， 另外还兼有隔磁作用。转子外圆 28上设有阻磁槽 31 , 阻隔永磁铁 15间的磁路旁通， 提高发电机的效率。
如图 6所示： 转子总成 4转子体外圈环周设有永磁体收纳槽 32， 永磁 体收纳槽 32中镶嵌若干对级偶数个永磁铁 15与其外圈设有一定距离。 永磁 铁 15的极性 S极与 Ν极沿转子体外圆 28交替排列。 永磁铁 15形状制成长 方体， 永磁铁 15为钹铁硼永磁铁。

Claims

权 利 要 求
1、一种多极内转子式永磁发电机， 包括定子总成（6)及转子总成（4)， 其特征是设有若干组定子绕组（12)的定子总成（6) 固定在发动机总成（1 ) 的定子座 （2) 上， 转子总成 （4) 的转子体外圈内环周镶嵌至少二对级以上 的若干对级永磁铁（15) 固定在发动机的旋转体（34)上， 定子总成（6) 的 定子内孔（27)与转子总成（4)的转子体旋转中心（19)同心， 定子总成（6) 的定子体内孔（27)与转子总成（4)的转子体外圆（28)之间留有间隙（21 )。
2、根据权利要求 1所述的一种多极内转子式永磁发电机，其特征在于所 述的转子总成（4)转子体外圈内环周设有永磁体收纳槽（32)中镶嵌若干对 级永磁铁 （15) 与其外圈设有距离。
3、根据权利要求 1或 2所述的一种多极内转子式永磁发电机，其特征在 于所述的永磁铁 （15) 为钕铁硼永磁铁， 永磁铁 （15) 形状制成长方体。
4、根据权利要求 3所述的一种多极内转子式永磁发电机，其特征在于所 述的转子总成 （4) 转子体上设有转子通风孔 （14)、 转子定位圆 （20)。
5、根据权利要求 4所述的一种多极内转子式永磁发电机，其特征在于所 述的定子总成（6)定子体内侧周圈设有平行于转子体旋转中心（19)的定子 线槽 （26)。
6、根据权利要求 5所述的一种多极内转子式永磁发电机，其特征在于所 述的定子线槽 （26) 内的定子绕组 （12) 分别绕制成三相四线制的 Y型或三 相三线制的 Δ型。
7、根据权利要求 1或 2或 4或 5或 6所述的一种多极内转子式永磁发电 机， 其特征在于所述的发动机的旋转体 （34) 采用转子座或飞轮或曲轴。
PCT/CN2007/002120 2006-12-07 2007-07-11 Générateur à aimant permanent à rotor interne multipôles WO2008067705A1 (fr)

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CN101806244B (zh) * 2010-04-08 2012-07-04 陈维加 新型多极内燃发电机组
CN102468694B (zh) * 2010-11-18 2014-04-16 财团法人工业技术研究院 薄型马达的强化结构
CN102116240A (zh) * 2011-04-01 2011-07-06 徐查庆 汽油发电机带触发点火的飞轮
CN102638128B (zh) * 2012-03-30 2013-11-27 星月集团有限公司 集点火、起动、发电于一体的永磁电机

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JP2003235184A (ja) * 2002-02-01 2003-08-22 Yaskawa Electric Corp 回転電機

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GB1194308A (en) * 1969-03-19 1970-06-10 Wagner Electric Corp A Stator for an Electric Motor.
US5705917A (en) * 1994-09-14 1998-01-06 Coleman Powermate, Inc. Light weight machine with rotor employing permanent magnets and consequence poles
JP2003235184A (ja) * 2002-02-01 2003-08-22 Yaskawa Electric Corp 回転電機

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