WO2018090415A1 - 转子和具有其的永磁同步电机、冰箱压缩机和洗碗机 - Google Patents

转子和具有其的永磁同步电机、冰箱压缩机和洗碗机 Download PDF

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Publication number
WO2018090415A1
WO2018090415A1 PCT/CN2016/109717 CN2016109717W WO2018090415A1 WO 2018090415 A1 WO2018090415 A1 WO 2018090415A1 CN 2016109717 W CN2016109717 W CN 2016109717W WO 2018090415 A1 WO2018090415 A1 WO 2018090415A1
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WIPO (PCT)
Prior art keywords
permanent magnet
magnet synchronous
rotor
magnetic
synchronous motor
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PCT/CN2016/109717
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English (en)
French (fr)
Inventor
王飞
陈金涛
Original Assignee
广东威灵电机制造有限公司
美的威灵电机技术（上海）有限公司
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Publication of WO2018090415A1 publication Critical patent/WO2018090415A1/zh

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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
    • 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
    • H02K1/26—Rotor cores with slots for windings
    • 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
    • H02K21/02—Details

Definitions

  • the present invention relates to the field of electrical machinery, and more particularly to a rotor and a permanent magnet synchronous motor having the same, a refrigerator compressor and a dishwasher.
  • the magnetic watts of the rotor of the self-starting permanent magnet synchronous motor are circularly distributed, as shown in FIG. 7, when the shaft hole 13' at the center of the rotor is large, the arrangement space of the magnetic watt 2' and the squirrel cage winding Limited, resulting in d-axis armature reaction flux path, q-axis armature reaction flux path space is narrow, magnetic field saturation is serious.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, it is an object of the present invention to provide a rotor for a permanent magnet synchronous motor which can improve the efficiency of a permanent magnet synchronous motor when the rotor is applied to a permanent magnet synchronous motor.
  • Another object of the present invention is to provide a permanent magnet synchronous motor having the above rotor.
  • Still another object of the present invention is to provide a dishwasher having the above permanent magnet synchronous motor.
  • a rotor for a permanent magnet synchronous motor includes: a rotor core formed with a plurality of circumferentially spaced apart squirrel cages and circumferentially spaced and located at a plurality of Four magnetic tile grooves on the inner side of the squirrel cage are arranged, and the four magnetic tile grooves are arranged substantially in an elliptical shape; four magnetic tile assemblies, four magnetic tile assemblies are respectively placed in the four magnetic tile grooves.
  • the rotor for a permanent magnet synchronous motor of the present invention by disposing the four magnetic disk grooves substantially in an elliptical shape, the d-axis armature reaction magnetic flux path, the q-axis armature reaction magnetic flux path space, and the magnetic field can be reduced.
  • the degree of saturation increases the reluctance torque.
  • each of the magnetic tile grooves is an arcuate groove, and a first center of two adjacent magnetic wave grooves of the magnetic tile assembly with different magnetic poles is concentric and with the rotor iron
  • the axes of the cores are not concentric, and the second centers of the adjacent two of the magnetic tile assemblies of the magnetic tile assembly in which the different magnetic poles are placed are concentric and the axis of the rotor core
  • the center of the heart is distracted, the first center and the second center are symmetrically distributed about an axis of the rotor core, and the first center, the second center, and the axis of the rotor core are in a On the line.
  • the inner arc edge and the outer arc edge of each of the magnetic tile grooves are concentric arcs, and a distance between the inner arc edge and the outer arc edge is a corresponding magnetic The thickness of the tile assembly.
  • the plurality of squirrel cage slots comprise at least two squirrel cage slots of different groove types.
  • each of the magnetic tile assemblies includes at least one magnetic tile.
  • a permanent magnet synchronous motor according to a second aspect of the present invention includes the rotor for a permanent magnet synchronous motor according to the above first aspect of the present invention.
  • a refrigerator compressor according to a third aspect of the invention comprising the permanent magnet synchronous motor according to the above second aspect of the invention.
  • a dishwasher according to a fourth aspect of the invention includes the permanent magnet synchronous motor according to the above second aspect of the invention.
  • FIG. 1 is a perspective view of a rotor for a permanent magnet synchronous machine in accordance with an embodiment of the present invention
  • Figure 2 is an exploded view of the rotor shown in Figure 1;
  • Figure 3 is a schematic view showing the assembly of the rotor core and the magnetic tile assembly shown in Figure 2;
  • Figure 4 is another assembled view of the rotor core and the magnetic tile assembly shown in Figure 2, showing the d-axis armature reaction flux path;
  • Figure 5 is a further assembly view of the rotor core and the magnetic tile assembly shown in Figure 2, showing the q-axis armature reaction flux path;
  • Figure 6 is a schematic view of the rotor core shown in Figure 2;
  • Fig. 7 is a schematic view showing the assembly of a conventional rotor core and a magnetic tile assembly.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” and “second” may include one or more of the features either explicitly or implicitly. In the description of the present invention, "a plurality” means two or more unless otherwise stated.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • a rotor 100 for a permanent magnet synchronous motor (not shown) according to an embodiment of the first aspect of the present invention will now be described with reference to Figs.
  • the rotor 100 can be applied to a permanent magnet synchronous motor such as a 2-pole self-starting permanent magnet synchronous motor.
  • the rotor 100 is applied to a 2-pole self-starting permanent magnet synchronous motor as an example.
  • the rotor 100 can also be applied to other types of permanent magnet synchronous motors, and is not limited to 2-pole self-starting permanent magnet synchronous motors.
  • a rotor 100 for a permanent magnet synchronous motor such as a 2-pole self-starting permanent magnet synchronous motor according to an embodiment of the first aspect of the present invention includes a rotor core 1 and four magnetic tile assemblies 2.
  • the rotor core 1 may be formed by laminating silicon steel sheets.
  • the rotor core 1 is formed with a plurality of circumferentially spaced apart squirrel cage slots and four magnetic tile slots 12 circumferentially spaced apart and located inside the plurality of squirrel cage slots.
  • the direction “inner” can be understood as a direction toward the central axis of the rotor core 1, and the opposite direction is defined as “outer”.
  • a through shaft hole 13 is formed at the center of the rotor core 1.
  • the plurality of squirrel cage grooves are preferably evenly spaced along the circumferential direction of the rotor core 1, and a plurality of squirrel cage slots may be disposed adjacent to the outer circumferential surface of the rotor core 1, as shown in FIGS.
  • the squirrel cage winding 3 is placed in a plurality of squirrel cage slots as shown in FIG.
  • the squirrel cage winding 3 is a cast aluminum squirrel cage winding 3, but is not limited thereto.
  • the four magnetic tile grooves 12 are located on one side of the plurality of squirrel cages adjacent to the central axis of the rotor 100, and the four magnetic tile grooves 12 may be evenly spaced substantially along the circumferential direction of the rotor core 1. Among them, the four magnetic tile grooves 12 are arranged substantially in an elliptical shape.
  • the four magnetic tile grooves 12 are substantially elliptical” can be understood as the shape in which the four magnetic tile grooves 12 are generally elliptical, rather than being a standard ellipse in a mathematical sense.
  • the shape, that is, the pattern formed by the four magnetic tile grooves 12 may be slightly different from the standard oval shape in the mathematical sense, but at first glance, the four magnetic tile grooves 12 form an elliptical shape, that is, the four
  • the distance between the two closest points on the circular pattern substantially surrounded by the magnetic tile grooves 12 is smaller than the distance between the two points farthest from the distance, and the line connecting the nearest two points is the farthest from the distance.
  • the connection between the two points can be vertical.
  • Four magnetic tile assemblies 2 are placed in the four magnetic tile slots 12, respectively.
  • the d-axis armature reaction magnetic flux path and the q-axis armature reaction magnetic flux path space can be increased.
  • the distance between the spacing of the two magnetic tile assemblies 2 on the left side of the rotor core 1 according to the present invention and the left side of the shaft hole 13 is greater than the two magnetic tile assemblies 2 on the left side of the conventional rotor core 1'
  • the distance between the interval of the 'and the left side of the shaft hole 13', the distance between the interval between the two magnetic tile assemblies 2 on the right side and the right side of the shaft hole 13 is larger than the right of the conventional rotor core 1'
  • the distance between the interval of the two magnetic tile assemblies 2 on the upper side of 1 and the top of the shaft hole 13 is greater than the interval between the two magnetic tile assemblies 2' on the upper side of the conventional rotor core 1' and the shaft hole 13
  • the rotor 100 for a permanent magnet synchronous motor such as a 2-pole self-starting permanent magnet synchronous motor according to an embodiment of the present invention can increase the d-axis armature reaction flux path by arranging the four magnetic tile grooves 12 substantially in an elliptical shape.
  • the q-axis armature reacts to the flux path space, reduces the saturation of the magnetic field, and increases the reluctance torque.
  • the permanent magnet synchronous motor is raised, for example, 2 poles. Self-starting permanent magnet synchronous motor efficiency.
  • each of the magnetic tile grooves 12 is a curved groove, and is placed differently.
  • the first center O1 of the adjacent two magnetic tile grooves 12 of the magnetic pole assembly 2 (for example, the upper and lower magnetic grooves 12 on the left side in FIG. 6) are concentric and different from the axis O of the rotor core 1.
  • the second center O2 of the adjacent two magnetic tile grooves 12 (for example, the upper and lower magnetic tiles 12 on the right side in FIG.
  • the magnetic tile assembly 2 on which the different magnetic poles are placed is concentric and the axis of the rotor core 1
  • the center O is different, and the first center O1 and the second center O2 are symmetrically distributed with respect to the axis O of the rotor core 1, and the first center O1, the second center O2, and the axis O of the rotor core 1 are in a straight line.
  • the d-axis armature reaction magnetic flux path and the q-axis armature reaction magnetic flux path space can be further increased, the magnetic field saturation degree is further reduced, and the reluctance torque is further improved, and the rotor 100 is applied to a permanent magnet synchronous motor such as a 2-pole.
  • the efficiency of the permanent magnet synchronous motor such as the 2-pole self-starting permanent magnet synchronous motor can be further improved, and the processing of the magnetic tile groove 12 is simple.
  • the inner arc edge and the outer arc edge of each of the magnetic tile grooves 12 are concentric arcs, and the distance between the inner arc edge and the outer arc edge is the thickness of the corresponding magnetic tile assembly 2,
  • the magnetic tile assembly 2 is a curved magnetic tile assembly 2.
  • the plurality of squirrel cages includes at least two squirrel cages of different groove types.
  • the plurality of squirrel cage slots may include a plurality of first squirrel cage slots 111 and a plurality of second squirrel cage slots 112 having different slot shapes, and four first squirrel cage slots are shown in the examples of FIGS. 3-6. 111, and the length of the first squirrel cage 111 is greater than the length of the second squirrel slot 112, the four first squirrel slots 111 are disposed adjacent to each other, and the two first squirrel slots 111 adjacent to each other are adjacent to each other.
  • the two first squirrel slots 111 are diametrically opposed to the rotor core 1, and the plurality of second squirrel slots 112 are evenly spaced apart on both sides of the two first squirrel slots 111 adjacent to each other.
  • the plurality of squirrel cages may also include three or more types of squirrel cages (not shown) having different groove shapes. It can be understood that the specific arrangement manner of the plurality of squirrel cages with different groove types can be specifically set according to actual requirements to better meet the actual requirements.
  • each tile assembly 2 includes at least one magnetic tile. That is, each tile assembly 2 can include one or more magnetic tiles. There may be one or more magnetic tiles in each of the tile slots 12 at this time. It can be understood that the number of magnetic tiles included in each of the magnetic tile assemblies 2 can be specifically set according to actual requirements to better meet actual requirements.
  • a permanent magnet synchronous motor such as a 2-pole self-starting permanent magnet synchronous motor, according to an embodiment of the second aspect of the present invention, includes a rotor 100 for a permanent magnet synchronous motor according to the above-described first aspect of the present invention.
  • the permanent magnet synchronous motor of the embodiment of the present invention for example, a 2-pole self-starting permanent magnet synchronous motor, by using the rotor 100 described above, the efficiency of a permanent magnet synchronous motor such as a 2-pole self-starting permanent magnet synchronous motor can be effectively improved.
  • a refrigerator compressor (not shown) according to an embodiment of the third aspect of the present invention includes a permanent magnet synchronous motor according to the above second embodiment of the present invention.
  • a dishwasher (not shown) according to an embodiment of the fourth aspect of the present invention includes a permanent magnet synchronous motor according to the above second embodiment of the present invention.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

一种转子(100)和具有其的永磁同步电机、冰箱压缩机和洗碗机，用于永磁同步电机的转子(100)包括：转子铁芯(1)和四个磁瓦组件(2)，转子铁芯(1)上形成有周向间隔设置的多个鼠笼槽和周向间隔设置且位于多个鼠笼槽内侧的四个磁瓦槽(12)，四个磁瓦槽(12)大致呈椭圆形排布；四个磁瓦组件(2)分别放置在四个磁瓦槽(12)内。

Description

转子和具有其的永磁同步电机、冰箱压缩机和洗碗机 技术领域
本发明涉及电机技术领域，尤其是涉及一种转子和具有其的永磁同步电机、冰箱压缩机和洗碗机。
背景技术
目前，自起动永磁同步电机多数采用鼠笼结构，利用鼠笼绕组实现起动，也有一些采用实心转子结构，利用实心转子的导电导磁功能产生涡流实现起动。
相关技术中，自起动永磁同步电机的转子的磁瓦呈圆形分布，如图7所示，当转子中心处的轴孔13’较大时，磁瓦2’和鼠笼绕组的排列空间有限，导致d轴电枢反应磁通路径、q轴电枢反应磁通路径空间较窄，磁场饱和严重。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明的一个目的在于提出一种用于永磁同步电机的转子，当转子应用于永磁同步电机时，可以提升永磁同步电机的效率。
本发明的另一个目的在于提出一种具有上述转子的永磁同步电机。
本发明的再一个目的在于提出一种具有上述永磁同步电机的冰箱压缩机。
本发明的又一个目的在于提出一种具有上述永磁同步电机的洗碗机。
根据本发明第一方面的用于永磁同步电机的转子，包括：转子铁芯，所述转子铁芯上形成有周向间隔设置的多个鼠笼槽和周向间隔设置且位于多个所述鼠笼槽内侧的四个磁瓦槽，四个所述磁瓦槽大致呈椭圆形排布；四个磁瓦组件，四个磁瓦组件分别放置在四个所述磁瓦槽内。
根据本发明的用于永磁同步电机的转子，通过将四个磁瓦槽大致呈椭圆形排布，可以增加d轴电枢反应磁通路径、q轴电枢反应磁通路径空间，降低磁场饱和程度，提高磁阻转矩，当转子应用于永磁同步电机时，提升永磁同步电机的效率。
根据本发明的一些实施例，每个所述磁瓦槽为弧形槽，放置不同磁极的所述磁瓦组件的相邻两个所述磁瓦槽的第一圆心同心且与所述转子铁芯的轴心不同心，另外放置不同磁极的所述磁瓦组件的相邻两个所述磁瓦槽的第二圆心同心且与所述转子铁芯的轴 心不同心，所述第一圆心和所述第二圆心关于所述转子铁芯的轴心对称分布，且所述第一圆心、所述第二圆心和所述转子铁芯的轴心在一条直线上。
可选地，每个所述磁瓦槽的内圆弧边和外圆弧边为同心圆弧，且所述内圆弧边和所述外圆弧边之间的距离为对应的所述磁瓦组件的厚度。
根据本发明的一些实施例，多个所述鼠笼槽包括槽型不同的至少两种鼠笼槽。
根据本发明的一些实施，每个所述磁瓦组件包括至少一个磁瓦。
根据本发明第二方面的永磁同步电机，包括根据本发明上述第一方面的用于永磁同步电机的转子。
根据本发明第三方面的冰箱压缩机，包括根据本发明上述第二方面的永磁同步电机。
根据本发明第四方面的洗碗机，包括根据本发明上述第二方面的永磁同步电机。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本发明实施例的用于永磁同步电机的转子的立体图；
图2是图1中所示的转子的***图；
图3是图2中所示的转子铁芯和磁瓦组件的装配示意图；
图4是图2中所示的转子铁芯和磁瓦组件的另一个装配示意图，其中示出了d轴电枢反应磁通路径；
图5是图2中所示的转子铁芯和磁瓦组件的再一个装配示意图，其中示出了q轴电枢反应磁通路径；
图6是图2中所示的转子铁芯的示意图；
图7是现有的转子铁芯和磁瓦组件的装配示意图。
附图标记：
100：转子；
1：转子铁芯；111：第一鼠笼槽；112：第二鼠笼槽；
12：磁瓦槽；13：轴孔；2：磁瓦组件；3：鼠笼绕组；
1’：转子铁芯；13’：轴孔；2’：磁瓦组件。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
下面参考图1-图6描述根据本发明第一方面实施例的用于永磁同步电机(图未示出)的转子100。转子100可以应用于永磁同步电机例如2极自起动永磁同步电机。在本申请下面的描述中，以转子100应用于2极自起动永磁同步电机为例进行说明。当然，本领域的技术人员可以理解，转子100还可以应用于其他类型的永磁同步电机，而不限于2极自起动永磁同步电机。
如图1-图6所示，根据本发明第一方面实施例的用于永磁同步电机例如2极自起动永磁同步电机的转子100，包括转子铁芯1和四个磁瓦组件2。
转子铁芯1可以由硅钢片叠压而成，转子铁芯1上形成有周向间隔设置的多个鼠笼槽和周向间隔设置且位于多个鼠笼槽内侧的四个磁瓦槽12。这里，需要说明的是，方向“内”可以理解为朝向转子铁芯1的中心轴线的方向，其相反方向被定义为“外”。转子铁芯1的中心处形成有贯通的轴孔13。
多个鼠笼槽优选沿转子铁芯1的周向均匀间隔分布，且多个鼠笼槽可以邻近转子铁芯1的外周面设置，如图3-图5所示。鼠笼绕组3设在多个鼠笼槽内，如图2所示。可选地，鼠笼绕组3为铸铝鼠笼绕组3，但不限于此。
四个磁瓦槽12位于上述多个鼠笼槽的邻近转子100的中心轴线的一侧，且四个磁瓦槽12可以大致沿转子铁芯1的周向均匀间隔分布。其中，四个磁瓦槽12大致呈椭圆形排布。这里，需要说明的是，“四个磁瓦槽12大致呈椭圆形排布”可以理解为四个磁瓦槽12共同围成的形状大体是椭圆形，而非一定是数学意义上标准的椭圆形，即四个磁瓦槽12构成的图形与数学意义上标准的椭圆形可能会略有差异，但一眼看来，四个磁瓦槽12构成的图形为椭圆形，也就是说，这四个磁瓦槽12大致围成的环形图形上距离最近的两个点之间的距离小于距离最远的两个点之间的距离，且距离最近的两个点的连线与距离最远的两个点的连线可以垂直。四个磁瓦组件2分别放置在四个磁瓦槽12内。
由此，通过将四个磁瓦槽12大致呈椭圆形排布，可以增加d轴电枢反应磁通路径和q轴电枢反应磁通路径空间，具体地，参照图4并结合图7，根据本发明的转子铁芯1的左侧的两个磁瓦组件2的间隔处与轴孔13的左侧之间的距离大于传统的转子铁芯1’的左侧的两个磁瓦组件2’的间隔处与轴孔13’的左侧之间的距离，右侧的两个磁瓦组件2的间隔处与轴孔13的右侧之间的距离大于传统的转子铁芯1’的右侧的两个磁瓦组件2’的间隔处与轴孔13’的右侧之间的距离，由此，加宽了d轴电枢反应磁通路径；同样地，根据本发明的转子铁芯1的上侧的两个磁瓦组件2的间隔处与轴孔13的顶部之间的距离大于传统的转子铁芯1’的上侧的两个磁瓦组件2’的间隔处与轴孔13’的顶部之间的距离，下侧的两个磁瓦组件2的间隔处与轴孔13的底部之间的距离大于传统的转子铁芯1’的下侧的两个磁瓦组件2’的间隔处与轴孔13’的底部之间的距离，由此，加宽了q轴电枢反应磁通路径，从而降低了磁场饱和程度，提高了磁阻转矩，当转子100应用于永磁同步电机例如2极自起动永磁同步电机时，可以提升永磁同步电机的效率。
根据本发明实施例的用于永磁同步电机例如2极自起动永磁同步电机的转子100，通过将四个磁瓦槽12大致呈椭圆形排布，可以增加d轴电枢反应磁通路径、q轴电枢反应磁通路径空间，降低磁场饱和程度，提高磁阻转矩，当转子100应用于永磁同步电机例如2极自起动永磁同步电机时，提升永磁同步电机例如2极自起动永磁同步电机的效率。
根据本发明的一些实施例，如图3-图6所示，每个磁瓦槽12为弧形槽，放置不同 磁极的磁瓦组件2的相邻两个磁瓦槽12(例如，图6中左侧的上下两个磁瓦槽12)的第一圆心O1同心且与转子铁芯1的轴心O不同心，另外放置不同磁极的磁瓦组件2的相邻两个磁瓦槽12(例如，图6中右侧的上下两个磁瓦槽12)的第二圆心O2同心且与转子铁芯1的轴心O不同心，第一圆心O1和第二圆心O2关于转子铁芯1的轴心O对称分布，且第一圆心O1、第二圆心O2和转子铁芯1的轴心O在一条直线上。由此，可以进一步增加d轴电枢反应磁通路径、q轴电枢反应磁通路径空间，进一步降低磁场饱和程度，进一步提高磁阻转矩，当转子100应用于永磁同步电机例如2极自起动永磁同步电机时，可以进一步提升永磁同步电机例如2极自起动永磁同步电机的效率，且磁瓦槽12的加工简单。
可选地，每个磁瓦槽12的内圆弧边和外圆弧边为同心圆弧，且内圆弧边和外圆弧边之间的距离为对应的磁瓦组件2的厚度，此时磁瓦组件2为弧形磁瓦组件2。由此，进一步简化了磁瓦槽12的加工工艺，降低了成本，且可以提升永磁同步电机例如2极自起动永磁同步电机的效率。
根据本发明的一些实施例，多个鼠笼槽包括槽型不同的至少两种鼠笼槽。例如，多个鼠笼槽可以包括槽型不同的多个第一鼠笼槽111和多个第二鼠笼槽112，在图3-图6的示例中示出了四个第一鼠笼槽111，且第一鼠笼槽111的长度大于第二鼠笼槽112的长度，四个第一鼠笼槽111两两邻近设置，且相互邻近的两个第一鼠笼槽111与另外相互邻近的两个第一鼠笼槽111关于转子铁芯1的径向相对，多个第二鼠笼槽112可以均匀间隔分布在相互邻近的两个第一鼠笼槽111的两侧。当然，多个鼠笼槽还可以包括槽型不同的三种或三种以上的鼠笼槽(图未示出)。可以理解的是，槽型不同的多种鼠笼槽的具体排布方式可以根据实际要求具体设置，以更好地满足实际要求。
根据本发明的一些实施例，每个磁瓦组件2包括至少一个磁瓦。即每个磁瓦组件2可以包括一个或多个磁瓦。此时每个磁瓦槽12内可以有一个或一个以上的磁瓦。可以理解的是，每个磁瓦组件2包含的磁瓦的个数可以根据实际要求具体设置，以更好地满足实际要求。
根据本发明第二方面实施例的永磁同步电机例如2极自起动永磁同步电机，包括根据本发明上述第一方面实施例的用于永磁同步电机的转子100。
根据本发明实施例的永磁同步电机例如2极自起动永磁同步电机，通过采用上述的转子100，可以有效提升永磁同步电机例如2极自起动永磁同步电机的效率。
根据本发明第三方面实施例的冰箱压缩机(图未示出)，包括根据本发明上述第二方面实施例的永磁同步电机。
根据本发明第四方面实施例的洗碗机(图未示出)，包括根据本发明上述第二方面实施例的永磁同步电机。
根据本发明实施例的永磁同步电机例如2极自起动永磁同步电机、冰箱压缩机和洗碗机的其他构成以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (8)

  1. 一种用于永磁同步电机的转子，其特征在于，包括：
    转子铁芯，所述转子铁芯上形成有周向间隔设置的多个鼠笼槽和周向间隔设置且位于多个所述鼠笼槽内侧的四个磁瓦槽，四个所述磁瓦槽大致呈椭圆形排布；
    四个磁瓦组件，四个磁瓦组件分别放置在四个所述磁瓦槽内。
  2. 根据权利要求1所述的用于永磁同步电机的转子，其特征在于，每个所述磁瓦槽为弧形槽，放置不同磁极的所述磁瓦组件的相邻两个所述磁瓦槽的第一圆心同心且与所述转子铁芯的轴心不同心，另外放置不同磁极的所述磁瓦组件的相邻两个所述磁瓦槽的第二圆心同心且与所述转子铁芯的轴心不同心，所述第一圆心和所述第二圆心关于所述转子铁芯的轴心对称分布，且所述第一圆心、所述第二圆心和所述转子铁芯的轴心在一条直线上。
  3. 根据权利要求2所述的用于永磁同步电机的转子，其特征在于，每个所述磁瓦槽的内圆弧边和外圆弧边为同心圆弧，且所述内圆弧边和所述外圆弧边之间的距离为对应的所述磁瓦组件的厚度。
  4. 根据权利要求1-3中任一项所述的用于永磁同步电机的转子，其特征在于，多个所述鼠笼槽包括槽型不同的至少两种鼠笼槽。
  5. 根据权利要求1-4中任一项所述的用于永磁同步电机的转子，其特征在于，每个所述磁瓦组件包括至少一个磁瓦。
  6. 一种永磁同步电机，其特征在于，包括根据权利要求1-5中任一项所述的用于永磁同步电机的转子。
  7. 一种冰箱压缩机，其特征在于，包括根据权利要求6所述的永磁同步电机。
  8. 一种洗碗机，其特征在于，包括根据权利要求6所述的永磁同步电机。
PCT/CN2016/109717 2016-11-18 2016-12-13 转子和具有其的永磁同步电机、冰箱压缩机和洗碗机 WO2018090415A1 (zh)

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