WO2016176897A1 - 锥形气隙轴向双回路磁场永磁同步电机 - Google Patents

锥形气隙轴向双回路磁场永磁同步电机 Download PDF

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Publication number
WO2016176897A1
WO2016176897A1 PCT/CN2015/081769 CN2015081769W WO2016176897A1 WO 2016176897 A1 WO2016176897 A1 WO 2016176897A1 CN 2015081769 W CN2015081769 W CN 2015081769W WO 2016176897 A1 WO2016176897 A1 WO 2016176897A1
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Prior art keywords
stator
tapered
permanent magnet
magnetic field
magnet synchronous
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PCT/CN2015/081769
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English (en)
French (fr)
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周焕民
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周焕民
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Publication of WO2016176897A1 publication Critical patent/WO2016176897A1/zh

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    • 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

Definitions

  • the invention relates to the technical field of electric motors, in particular to a tapered air gap axial double loop magnetic field permanent magnet synchronous motor.
  • the permanent magnet synchronous motor has the advantages of high efficiency, high output, adjustable speed, good dynamic performance and high reliability.
  • the magnetic steel is often arranged in the inner core of the stator core. Due to space limitation, it is necessary to select a rare earth magnetic steel with a high magnetic energy product and a small volume. Such magnetic steels are expensive and contain limited resources due to the presence of rare earth elements lanthanum or cerium (samarium cobalt magnet or neodymium iron boron magnet). (Of course, the outer rotor type motor can also arrange the magnetic steel on the periphery of the stator core, but is also limited by the outer diameter). The high space constraints and high cost greatly limit the development and application of permanent magnet synchronous motors.
  • the present invention is directed to the above problems, and provides a tapered air gap axial double-loop magnetic field permanent magnet synchronous motor, which can effectively improve the efficiency of motor production assembly and at the same time improve the use efficiency of the motor.
  • a tapered air gap axial double-circuit magnetic field permanent magnet synchronous motor includes a casing and a stator core and a rotor disposed in the casing, wherein the stator core has two And the two sets of stator core end planes are fitted to each other and disposed in the casing, and each set of stator core outer ends form a tapered surface, and each of the tapered surfaces is matched with a rotor, and A magnetic steel having different polarities is staggered on the tapered surface, and a convex portion is formed at an intermediate position of the inner wall of the casing, and stator windings are wound around each of the stator cores, and the two sets of stator windings pass through the convex phase interval.
  • stator core is a wound core.
  • the tapered surface formed by the outer end of the stator core is an inner tapered surface or an outer tapered surface.
  • an end cover is respectively connected to both ends of the casing, and the rotating shaft is rotatably supported by the end cover through a bearing.
  • stator winding is axially wound on the stator core, and the axis of the stator winding is parallel to the rotating shaft.
  • the technical effect of the invention is that the product of the invention is provided with two sets of stator cores in the casing by technical improvement against the shortage of the existing products, and each set of stator cores is rolled by a punching-winding integrated machine. At the same time, the two sets of stator cores are placed back to back, and the two sets of stator cores form separate "sub-motors" with the tapered rotors at both ends. When the two sets of "sub-motors" are used together, they can also be connected in parallel or in series according to the conditions of the power supply. use.
  • FIG. 1 is a schematic structural view of a first embodiment of the present invention.
  • FIG. 2 is a distribution diagram of the stator core and the winding of FIG. 1.
  • Figure 3 is a distribution diagram of the magnetic steel of Figure 1.
  • Figure 4 is a view of the stator core structure.
  • Figure 5 is a right side view of Figure 4.
  • Figure 6 is a structural view of a stator core and a stator winding.
  • Figure 7 is a structural view of the rotor of Figure 1.
  • Figure 8 is a schematic view showing the structure of a second embodiment of the present invention.
  • stator core 1 to 8 including stator core 1, tapered surface 1-1, stator winding 2, magnetic steel 3, rotor 4, bearing 5, rotating shaft 6, end cover 7, casing 8, projection 8-1, etc. .
  • the present invention is a tapered air gap axial double loop magnetic field permanent magnet synchronous motor, comprising a casing 8 and a stator core 1 and a rotor 4 disposed in the casing 8, the stator
  • the iron core 1 has two sets, and the end faces of the two sets of stator cores 1 are fitted to each other and disposed in the casing 8, and the outer ends of each set of stator cores 1 form a tapered surface 1-1, each of which is described.
  • the tapered faces 1-1 are each provided with a rotor 4, and magnetic steels 3 of different polarities are staggered on the tapered faces 1-1 to form a tapered air gap in the casing, and the inner wall of the casing 8 is intermediate
  • the position is formed with a protrusion 8-1, and each of the stator cores 1 is wound with a stator winding 2, and the two sets of stator windings 2 are spaced apart by a protrusion 8-1 to form two “sub-motors”.
  • it can be used in one set or in two sets, which can better meet the requirements of different customers and can effectively improve the use efficiency.
  • the stator core 1 is a wound core, and the stator core 1 is rolled by a punch-wound integrated machine during the manufacturing process. As shown in FIG. 7, by placing the two stator cores 1 back to back and providing two independent stator windings 2, respectively, the cone-shaped rotors 4 are matched to form two independent "sub-motors", which are coaxially operated. .
  • the tapered surface 1-1 formed at the outer end of the stator core 1 is an inner tapered surface or an outer tapered surface.
  • the magnetic steel 3 is disposed on On the inner wall of the end of the stator core 1, the rotor 4 extends into the inner tapered surface; when the tapered surface 1-1 is the outer tapered surface, the magnetic steel 3 is disposed on the end surface of the stator core 1, at which time the rotor 4 Cover the outer cone.
  • An end cover 7 is respectively connected to the two ends of the casing 8.
  • the rotating shaft 6 is rotatably supported by the end cover 7 through the bearing 5, and the rotor 4 is rotated by the rotating shaft 6.
  • the stator winding 2 is axially wound around the stator core 1, and the axis of the stator winding 2 is parallel to the rotating shaft 6.
  • the product design concept of the invention is ingenious and unique. When used, the connection status of the two “sub-motors” can be flexibly set according to actual needs, thereby effectively improving the working efficiency of the product.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

一种锥形气隙轴向双回路磁场永磁同步电机，包括机壳（8）及设置于机壳内的定子铁芯（1）与转子（4），定子铁芯有两组，且两组定子铁芯端部平面相互贴合后设置于机壳内，每组定子铁芯外端均形成锥形面（1-1），每个锥形面均配合设置一个转子，并在锥形面上交错布置极性不同的磁钢（3），机壳内壁中间位置形成有凸起（8-1），每个定子铁芯上均绕设有定子绕组（2），两组定子绕组之间通过凸起相间隔。该电机的生产装配效率和使用效率均得到提高。

Description

锥形气隙轴向双回路磁场永磁同步电机 技术领域
本发明涉及电机技术领域，具体地说是一种锥形气隙轴向双回路磁场永磁同步电机。
背景技术
永磁同步电机具有效率高，出力高，速度可调，动态性能好，可靠性高等优点。但是，现有的永磁电机，磁钢往往布置在定子铁芯内膛，因受空间限制，必须选用“磁能积”高，体积小的稀土磁钢。这种磁钢因含有稀土元素釤或钕(钐钴磁钢或钕铁硼磁钢)价格十分昂贵，而且资源有限。(当然，外转子型电机，也可以把磁钢布置在定子铁芯外围，但是同样受外径限制)。空间限制和成本的高昂，极大地限制了永磁同步电机的发展和适用范围。为此，申请人曾申请专利号为201420685869.X的实用新型专利，通过该专利很好地解决了上述传统永磁电机的缺憾，并且进一步提高了效率，降低了成本。但是，随着对专利技术生产实践的深入，申请人发现：1、定子铁芯分体独立存在于机壳内，虽然后面有固定工序，但是事先需要预定位，费时费力；2、铁芯由冲片叠制成，但是“叠压”和“紧固成型”等非机械操作，占时较多，影响批量生产。
发明内容
本发明针对上述问题，提供一种锥形气隙轴向双回路磁场永磁同步电机，采用该电机能有效提高电机生产装配的效率，同时还可以提高电机的使用效率。
按照本发明的技术方案：一种锥形气隙轴向双回路磁场永磁同步电机，包括机壳及设置于机壳内的定子铁芯与转子，其特征是：所述定子铁芯有两组，且两组定子铁芯端部平面相互贴合后、设置于机壳内，每组定子铁芯外端均形成锥形面，每个所述锥形面均配合设置一个转子，并在锥形面上交错布置极性不同的磁钢，所述机壳内壁中间位置形成有凸起，每个所述定子铁芯上均绕设有定子绕组，两组定子绕组之间通过凸起相间隔。
作为本发明的进一步改进，所述定子铁芯为卷绕式铁芯。
作为本发明的进一步改进，定子铁芯外端形成的锥形面为内锥面或外锥面。
作为本发明的进一步改进，所述机壳两端分别连接一个端盖，转轴通过轴承转动支承于端盖上。
作为本发明的进一步改进，所述定子绕组沿轴向绕设于定子铁芯上，且定子绕组的轴线与转轴相平行。
本发明的技术效果在于：本发明产品通过针对现有产品的不足进行技术改进，在机壳内设置两组定子铁芯，每组定子铁芯均通过冲裁-卷绕一体机卷制而成，同时将两组定子铁芯背靠背放置，两组定子铁芯分别与两端的锥形转子形成独立的“子电机”，两套“子电机”并用时，还可以根据电源的条件，并联或串联使用。
附图说明
图1为本发明第一种实施方式的结构示意图。
图2为图1中定子铁芯及绕组的分布图。
图3为图1中磁钢的分布图。
图4为定子铁芯结构视图。
图5为图4的右视图。
图6为定子铁芯及定子绕组的结构视图。
图7为图1中转子的结构视图。
图8为本发明的第二种实施方式结构示意图。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步的说明。
图1～8中，包括定子铁芯1、锥形面1-1、定子绕组2、磁钢3、转子4、轴承5、转轴6、端盖7、机壳8、凸起8-1等。
如图1～8所示，本发明是一种锥形气隙轴向双回路磁场永磁同步电机，包括机壳8及设置于机壳8内的定子铁芯1与转子4，所述定子铁芯1有两组，且两组定子铁芯1端部平面相互贴合后、设置于机壳8内，每组定子铁芯1外端均形成锥形面1-1，每个所述锥形面1-1均配合设置一个转子4，并在锥形面1-1上交错布置极性不同的磁钢3，以在机壳内形成锥形气隙，所述机壳8内壁中间位置形成有凸起8-1，每个所述定子铁芯1上均绕设有定子绕组2，两组定子绕组2之间通过凸起8-1相间隔，形成两个“子电机”，在使用时，可以只用一套，也可以两套并用，能够较好地满足不同客户的使用要求，可以有效提高使用效率。
如图4所示，定子铁芯1为卷绕式铁芯，该定子铁芯1在制造过程中，采用冲裁-卷绕一体机卷制而成。如图7所示，通过将两个定子铁芯1背靠背放置并设置两套独立的定子绕组2，分别与锥形状的转子4相配合，构成两个相互独立的“子电机”，同轴运转。
如图1和图8所示，定子铁芯1外端形成的锥形面1-1为内锥面或外锥面，当锥形面1-1为内锥面时，磁钢3设置于定子铁芯1端部内壁上，此时转子4伸入内锥面中；当锥形面1-1为外锥面时，磁钢3设置于定子铁芯1端部表面，此时转子4将外锥面包覆在内。
机壳8两端分别连接一个端盖7，转轴6通过轴承5转动支承于端盖7上，转子4由转轴6带动进行转动。
定子绕组2沿轴向绕设于定子铁芯1上，且定子绕组2的轴线与转轴6相平行。
本发明产品设计构思巧妙独特，在使用时，可以根据实际情况需要，灵活设置两个“子电机”的连接状况，有效提高产品的工作效率。

Claims (5)

  1. 一种锥形气隙轴向双回路磁场永磁同步电机，包括机壳(8)及设置于机壳(8)内的定子铁芯(1)与转子(4)，其特征是：所述定子铁芯(1)有两组，且两组定子铁芯(1)端部平面相互贴合后、设置于机壳(8)内，每组定子铁芯(1)外端均形成锥形面(1-1)，每个所述锥形面(1-1)均配合设置一个转子(4)，并在锥形面(1-1)上交错布置极性不同的磁钢(3)，所述机壳(8)内壁中间位置形成有凸起(8-1)，每个所述定子铁芯(1)上均绕设有定子绕组(2)，两组定子绕组(2)之间通过凸起(8-1)相间隔。
  2. 按照权利要求1所述的锥形气隙轴向双回路磁场永磁同步电机，其特征是：所述定子铁芯(1)为卷绕式铁芯。
  3. 按照权利要求1所述的锥形气隙轴向双回路磁场永磁同步电机，其特征是：定子铁芯(1)外端形成的锥形面(1-1)为内锥面或外锥面。
  4. 按照权利要求1所述的锥形气隙轴向双回路磁场永磁同步电机，其特征是：所述机壳(8)两端分别连接一个端盖(7)，转轴(6)通过轴承(5)转动支承于端盖(7)上。
  5. 按照权利要求1所述的锥形气隙轴向双回路磁场永磁同步电机，其特征是：所述定子绕组(2)沿轴向绕设于定子铁芯(1)上，且定子绕组(2)的轴线与转轴(6)相平行。
PCT/CN2015/081769 2015-05-07 2015-06-18 锥形气隙轴向双回路磁场永磁同步电机 WO2016176897A1 (zh)

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CN114655816A (zh) * 2022-04-08 2022-06-24 美迪斯智能装备有限公司 一种并行结构多定子曳引机

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CN107070146B (zh) * 2017-05-03 2023-07-14 周焕民 永磁同步电机
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CN114655816A (zh) * 2022-04-08 2022-06-24 美迪斯智能装备有限公司 一种并行结构多定子曳引机

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