|Publication number||CN1185773 C|
|Application number||CN 00817635|
|Publication date||19 Jan 2005|
|Filing date||13 Dec 2000|
|Priority date||23 Dec 1999|
|Also published as||CA2394632A1, CA2394632C, CN1413375A, EP1240701A1, US6849985, US20030122442, WO2001048890A1|
|Publication number||00817635.3, CN 00817635, CN 1185773 C, CN 1185773C, CN-C-1185773, CN00817635, CN00817635.3, CN1185773 C, CN1185773C, PCT/2000/2511, PCT/SE/0/002511, PCT/SE/0/02511, PCT/SE/2000/002511, PCT/SE/2000/02511, PCT/SE0/002511, PCT/SE0/02511, PCT/SE0002511, PCT/SE002511, PCT/SE2000/002511, PCT/SE2000/02511, PCT/SE2000002511, PCT/SE200002511|
|Inventors||阿兰·G·杰克, 巴里·麦克罗, 厄于斯泰因·克罗根|
|Export Citation||BiBTeX, EndNote, RefMan|
|Classifications (9), Legal Events (4)|
|External Links: SIPO, Espacenet|
本发明的技术领域本发明一般涉及电机，具体涉及电机的定子或转子。 Field of the Invention The present invention relates generally to the motor, in particular to the motor stator or rotor.
本发明背景电机的定子组件一般具有由钢片叠层组件构成的定子芯。 Background motor stator assembly of the present invention generally includes a stator core stack assembly constituted by the steel. 作为一种钢片叠层的代用方法，定子芯可以用铁粉制作，例如由美国专利NO4947065以及国际专利申请WO 95/12912中例示的那样，前者公开一种模制成一体的定子，后者公开一种包含许多分开的基本上完全一样的部分组成的定子。 As an alternative method for steel laminate the stator iron core can be made, for example, U.S. Patent NO4947065 International Patent Application WO 95/12912 and as illustrated in, the former discloses an integrally molded of a stator, the latter discloses a plurality of individual substantially identical composition comprising a stator section.
由于其自身的特性，任何压制的非烧结材料不是很致密的。 Due to its characteristics, any non-pressed sintered material is not very dense. 这就意味着现在可以应用的软铁磁粉其导磁率小于钢片叠层所具有的导磁率。 This means that you can now use the soft iron magnetic permeability lower than the rate of its steel laminate has. 然而磁粉混合物通常具有很多优点，例如各向同性的磁特性、在高频下铁心损耗较低、改进的温度特性以及设计和组装较灵活性。 However powder mixture generally has many advantages, such as isotropic magnetic properties, low core loss at high frequencies, improved thermal characteristics and flexibility of design and assembly compared.
当要求电机的耐热性和制造特性时，利用单齿的几何结构将会得到很多好处。 When requiring heat resistance and fabrication characteristics of the motor, the use of a single tooth geometry will get many benefits. 然而对于感应电机，单齿的磁绕组可能造成性能降低，因为与传统分布的叠层绕组设计相比，其磁势(MMF)谐波的量增加。 However, for induction motors, magnet coils single tooth may cause reduced performance, as compared with the traditional distribution of laminated winding design, the magnetic potential (MMF) increase the amount of harmonics. 专利申请SE 9801401-2公开一种具有单齿几何结构的感应电机定子，该定子被设计成可以降低较高阶MMF谐波。 Patent Application SE 9801401-2 discloses an induction motor stator having a single tooth geometry, the stator is designed to reduce higher order harmonic MMF. 这些较高阶谐波耦合到转子，造成损耗增大，寄生转矩增加等。 These higher-order harmonics is coupled to the rotor, resulting in loss increases, and so the parasitic torque increases. 上述定子可以减小谐波，但是与传统分布的叠层绕组设计相比，操作性能降低。 Harmonics of the stator can be reduced, but compared to the traditional distribution of the laminated winding design, operational performance.
本发明概要本发明的目的是提供一种电机的定子或转子。 SUMMARY OF THE INVENTION The object of the present invention is to provide a motor rotor or stator. 该转子或定子得益于采用单齿的几何结构，使得电机的效率增加。 The rotor or stator geometries thanks to the use of a single tooth, so the efficiency of the motor increases.
按照本发明的一个方面，为完成本发明的目的，提供了一种电机的定子，该定子包括许多沿圆周分开的径向延伸的齿部分，其中各个齿部分具有单层绕组以及具有轴向和径向延伸的磁阻层，该磁阻层对不与该齿的绕组相互作用的磁场传播增加了各个齿部分的磁阻。 According to one aspect of the present invention, to accomplish the object of the present invention, there is provided a motor stator, the stator includes a plurality of circumferentially spaced radially extending teeth, wherein each tooth having a single winding portion and having an axial and radially extending magnetoresistive layer, the magnetoresistive layer windings that do not propagate the interaction with the magnetic field increases the reluctance of the tooth portions of each tooth.
具有上述磁阻层的定子的优点在于漏磁通减小，即不与定子两个相邻齿绕组相互作用的转子中的磁场减小。 Advantages of having the magnetoresistive layer stator leakage flux is reduced, that is not winding rotor teeth in the interaction of two adjacent stator magnetic field is reduced. 利用在这些齿中的磁阻层可以增加漏磁通传播路径的磁阻，所以可以减少上述漏磁通。 In use the teeth of the magnetoresistive layer can be increased reluctance flux leakage propagation path, it is possible to reduce the above leakage flux. 漏磁通的降低导致与两个相邻齿绕组相互作用磁场的增加。 Reducing leakage flux results in increased interaction between the magnetic field coil and the teeth of two adjacent. 因此，电机的操作性能提高。 Thus, operation of the motor performance is improved.
可以用许多方法配置磁阻层。 You can use many ways to configure magnetoresistive layer. 在一个实施例中，它是齿中轴向和径向延伸的间隙，该间隙沿径向和轴向穿过整个齿的主体，将齿主体分成两个部分，由此使两个部分沿圆周彼此分开。 In one embodiment, the gap which is axially and radially extending teeth, and the gap radially and axially through the body across the teeth, the teeth of the body into two portions, whereby the two portions circumferentially separated from each other.
按照另一个实施例，上述间隙这样配置，使得该间隙不将齿分成两个分开的部分，代之以该间隙沿轴向方向部分穿过该齿沿径向方向部分穿过该齿，或沿径向和轴向方向部分穿过该齿部分。 According to another embodiment, the gap is disposed so that the tooth gap is not divided into two separate parts, instead of the gap portion in the axial direction through the gear portion in a radial direction through the tooth, or along the radial and axial direction of the section through the tooth portion. 在利用部分延伸的间隙可以获得充分大的磁阻时，可以采用该间隙不将该齿分成两个分开部分的实施例。 Utilizing the gap portion extends sufficiently large magnetoresistance can be obtained when the gap can not be divided into the tooth portions of two separate embodiment.
另外，该间隙可以充填其磁阻大于该齿磁阻的材料。 Further, the gap may be greater than the tooth filling its reluctance magnetoresistive material.
该磁阻层还可以配置成在齿内径向和轴向延伸的容积，该容积包括许多充填有其磁阻大于该齿磁阻的空气或材料的小孔或较小的容积。 The magnetoresistive layer can also be configured in a volume of teeth extending radially and axially, the volume includes a plurality of apertures filled with its reluctance than the reluctance of air or material of the teeth or smaller volume.
按照优选实施例，该齿的端部伸向相邻齿的端部，伸出到这样的程度，使得在相邻齿的端部之间形成一个槽口。 According to a preferred embodiment, the end portion of the tooth toward the adjacent end portions of the teeth, projecting to such an extent that between the ends of adjacent teeth to form a notch. 本实施例的优点是，上述槽口可以在漏磁通传播路径上增加额外的磁阻。 Advantages of this embodiment, the above notch may add an additional drain on the reluctance of the flux path propagation.
该电机可以是例如感应电机、具有永久磁体转子的电机、同步马达等。 The motor may be, for example induction motors, permanent magnet rotor motors, synchronous motors.
在本发明的一个实施例中，该电机是感应电机。 In one embodiment of the present invention, the motor is an induction motor. 形成感应电机的优点是可以提高感应电机的转矩特性，该感应电机得益于采用单齿的几何结构以及本发明的定子。 Advantage of forming the induction motor can be improved torque characteristics of the induction motor, the induction motor thanks to the use of a single tooth geometry and a stator of the present invention.
按照另一优选实施例，定子分成至少在两个不同位置的两个定子部分。 According to another preferred embodiment, the stator is divided into at least two different positions of the two stator portion. 各个部分具有许多沿圆周分开的径向齿，各个齿具有单层的绕组。 Each section having a plurality of circumferentially spaced radial teeth, each tooth having a single winding. 因此可利用这些部分相互的相移减少除工作谐波外的其它谐波的影响。 Therefore, these parts can be used to reduce the impact of mutual phase shift of harmonics in addition to other work outside of harmonics.
若干定子部分在单一转子上产生的作用基本上和分布的绕组一样。 Several action on a single rotor stator portion produced and distributed windings substantially the same. 这导致抵大部分较高阶的谐波，同时保持单层齿绕组的有利之处，即保持较高的线槽充填率，并且制造和装配比较简单。 This leads to contact most of the higher order harmonics, while maintaining a single tooth windings is advantageous in that the trough to maintain a high filling rate, and is relatively simple to manufacture and assemble.
所有上述方面、实施例和优点同样适用于代替定子的转子。 All of the above aspects, embodiments and advantages apply equally to the stator instead of a rotor. 所以，根据本发明的另一方面，为完成本发明的这一目的，本发明还提供了一种电机的转子，包括许多沿圆周分开的径向延伸的齿，各个齿部分具有单层绕组，并分开成至少两个部分，这些部分在圆周由轴向和径向延伸的间隙彼此分开。 Therefore, according to another aspect of the present invention, to accomplish this object of the present invention, the present invention also provides a motor rotor comprising a plurality of circumferentially spaced teeth extending radially, each tooth having a single winding portion, and separated into at least two portions, these portions by the circumferential gap extending axially and radially separated from each other.
从下面的详细说明可以明显看出本发明在其它方面的应用。 From the following detailed description of the application of the present invention will be apparent in other areas. 然而应当明白，这些说明本发明优选实施例的详细说明以及特例仅仅是示范性说明，因为技术人员可以从这些详细说明中明显看出在本发明的精神和范围内的各种改变和变型。 However, it should be understood that these instructions and exceptions described in detail a preferred embodiment of the invention is merely exemplary explanation, because the art from this detailed description is evident within the spirit and scope of the invention various changes and modifications.
附图的简要说明从下面参照附图对现有优选实施例的详细说明可以明显看出本发明的其它特征和优点，这些附图是：图1是本发明一个优选实施例的四极三相感应马达定子和转子的端视图；图2是沿图1的II-II线截取的轴向横截面图；图3a是图1中定子的一个齿部分的端视图；图3b是沿图3a的线IIIb-IIIb线截取的视图；图4是图1所示定子和转子的端视图，示出转子中磁场的传播；图5a是本发明一个实施例的定子中一个齿的端视图；图5b是沿图5a的线Vb-Vb截取的视图；图6a是本发明一个实施例定子中一个齿的端视图；图6b是沿图6a中VIb-VIb截取的视图；图7a是本发明一个实施例定子中一个齿的端视图；图7b是沿图7a线的VIIb-VIIb截取的视图；图8是图1中定子中两个相邻齿的端视图。 BRIEF DESCRIPTION from the following detailed description with reference to the accompanying drawings of presently preferred embodiments will be apparent Other features and advantages of the present invention, the drawings are: FIG. 1 is a four-pole three-phase embodiment of a preferred embodiment of the present invention induction motor stator and rotor end view; Fig. 2 is an axial cross-sectional view along line II-II of Figure 1 taken; FIG. 3a is an end view of a stator tooth portion of FIG. 1; FIG. 3b of Figure 3a along line IIIb-IIIb view taken on line; FIG. 4 is an end view of the stator and rotor shown in Figure 1, showing the magnetic field in the propagation of the rotor; Fig. 5a is an embodiment of the invention a stator of an end view of the teeth; FIG. 5b Figure 5a along the line Vb-Vb view taken; Figure 6a is an embodiment of a stator tooth end view of the embodiment of the present invention; Fig. 6b along VIb-VIb in FIG. 6a taken view; FIG. 7a is an embodiment of the present invention One embodiment of the stator tooth end view; Fig. 7b of Figure 7a along the line VIIb-VIIb taken view; FIG. 8 is a diagram of the stator 1 in an end view of two adjacent teeth.
现有优选实施例的详细说明图1和2示出感应马达的定子1，该定子具有两个分开的定子部分2和3。 Detailed description of preferred embodiments Fig conventional 1 and 2 shows an induction motor stator, the stator having two separate portions 2 and the stator 3. 各个定子部分分别具有轭铁部分4和5，以及相邻接的六个沿圆周分开的径向延伸的齿6和7。 Portions each having a respective stator yoke portions 4 and 5, as well as adjoining six circumferentially spaced radially extending teeth 6 and 7.
各个齿6最好分别由间隙20分成两个沿圆周分开的部分6a、6b。 Each tooth 6, respectively, preferably by a gap 20 into two circumferentially spaced portions 6a, 6b. 在优选实施例中，该间隙还穿过与齿6形成构成一体的轭铁部分4。 In the preferred embodiment, also passes through the gap 6 is formed with teeth constituting the integral yoke portion 4. 然而，该间隙20也不一定穿过上述轭铁部分4，特别是在轭铁部分4和齿6不形成一体时齿部分7具有相同的形状。 However, the gap 20 may not necessarily pass through said yoke portion 4, particularly when the yoke 4 and the gear portion 6 is not formed integrally toothed portion 7 have the same shape.
另外，各个齿6和相应轭铁部分4的邻接部分形成单独的单元或部分8。 In addition, each tooth 6 and a corresponding yoke portion 4 is formed adjacent to a single unit or section 8. 同样，各个齿7和相应轭铁部分5的邻接部分形成单独的单元或部分9。 Similarly, each tooth 7 and the adjacent portions of the respective yoke portion 5 form a separate unit or section 9.
轭铁部分4和5在物理上的角度相移为电流相位180°±与扭曲变形不齐量相关的角度(未示出)。 Yoke portions 4 and 5 at the physical point of view for the current phase of the phase shift of 180 ° ± associated with the distorted perspective of the missing amount (not shown). 它们的电源也相移180°的电流相位。 Their current phase power supply is also a phase shift of 180 °. 另外，定子部分2和3由小的空气间隙10分开，从而可以减小在两个定子部分2和3中磁场的相互影响。 Further, the stator 10 parts 2 and 3 separated by a small air gap, thus reducing the mutual influence of the two stator portions 2 and 3 of the magnetic field.
结果，各个定子部分将包含同样的谐波，但是它们之间的相移，如从单一转子18上看出的，将抵消大部分不希望有的较高阶谐波。 As a result, each of the stator portion will contain the same harmonics, but the phase shift between them, as seen from a single rotor 18, will offset most undesirable higher order harmonics.
可以分别组装单独单元8和9中的各个定子部分2和3，这样便容易绕制定子1的各个单元。 Individual units can be assembled separately. 8 and 9 each stator section 2 and 3, so it is easy to develop the child about each unit 1.
用暂时磁粉末复合材料制作多个分开的单元8和9(在现时实施例中为12个)。 With temporary magnetic powder composite materials more separate units 8 and 9 (in present embodiment is 12). 该材料装在模子中，然后加压形成要求的形状，随后在相当低的温度下进行热处理，低到不破坏粉末粒子之间必需的绝缘层。 The material is mounted in a mold, and then pressing the desired shape is formed, and then at a relatively low temperature heat treatment, low to not destroy the necessary insulating layer between the powder particles. 这意味着，可以大量生产分开的单元8和9，不会造成材料的浪费，并作成具有很高配合公差或完全不需要机加工的精细模压件。 This means that a separate unit can be mass produced. 8 and 9, no waste material and made with high tolerances or no machining of fine moldings.
如对图2的一个单元8和一个单元9所示，各个齿6、7的轴向长度小于轭铁部分4、5相邻接部分的轴向长度。 As shown in Figure 8, and a unit 9 for one unit of Figure 2, the axial length of each tooth is less than 6,7 4,5 yoke portion adjacent the axial length of the contact portion. 轴向超过齿6、7的轭铁部分4、5的延伸部分对其两个轴向侧面是不对称的，该延伸部分增加了芯的工作长度，减少铁芯损耗和磁化电流，使得电机的效率更高。 Axially extending yoke portion than the tooth portions 6,7 4,5 flanked on its two axially asymmetric, the extension increases the working length of the core to reduce core loss and magnetizing current, so that the motor more efficient. 另外，利用邻接绕组槽口外面的线圈部件的轭铁轴向延伸部分可以改进从绕组到定子的热量传导。 In addition, the use of the adjacent outer coil winding slot yoke member axially extending portion can be improved from the stator windings to heat conduction.
可以用上述设计来减少总的绕组长度，从而减少电机的尺寸，而同时保持其操作性能。 Described above can be designed to reduce the overall length of the winding, thereby reducing the size of the motor, while maintaining its performance.
参照示出优选实施例的图3a和3b，将齿6分成两个部分6a、6b的间隙20其宽度GW小于齿主体宽度TW的20％，最好小于10％。 Referring to the preferred embodiment shown in FIG. 3a and 3b, the teeth 6 into two portions 6a, 6b of the gap 20 has a width GW is less than 20% of the tooth width TW of the body, preferably less than 10%. 该间隙用具有较高磁阻的材料填充，以减小漏磁通40，如图4所示。 The gap with filling material having high magnetic reluctance to reduce the leakage magnetic flux 40, as shown in Fig.
填充间隙20的材料还可用于使齿6的两个部分6a和6b保持分开，使得齿6的两个部分6a、6b受到相向的压力时，可以保持间隙20的宽度GW。 Gap-filling material 20 may also be used to make the teeth 6 of two portions 6a and 6b are kept separate, so that the two portions of the teeth 6a 6, 6b by the opposite pressure, can maintain the gap 20 of width GW.
现在参照图5a和5b，如果间隙20充满例如空气，则可以利用较小的分开装置22提供这种分离作用，而仅在间隙20的一部分体积中充满空气。 Referring now to Figures 5a and 5b, e.g., if the air gap 20 is filled, you can use a smaller apparatus 22 provided separately from this separation, but only in a part of the air filled gap 20 in volume. 这种较小的分离装置例如可以是具有高磁阻的材料片，可以作成为沿GW的方向和沿轴向方向填塞间隙20，并可以作成仅沿径向方向伸过间隙的较小距离。 This smaller separation means, for example can be a piece of material of high magnetic reluctance may be made to become the direction of GW and filling the gap 20 in the axial direction, and can be made only extends through a gap in the radial direction of the small distance. 该分开装置22可以配置在沿径向方向延伸，而不沿轴向方向延伸。 The apparatus 22 may be separately arranged in a radial direction extending, without extending in the axial direction.
按照其它实施例，间隙20不一定要将齿6分成两个分开的部分6a、6b。 According to other embodiments, the gap 20 is not necessarily to the teeth 6 into two separate portions 6a, 6b. 该间隙20可以配置成沿径向方向部分穿过该齿和沿轴向方向完全穿过该齿，见图6a和6b。 The gap 20 can be configured through the portion of the radial direction and in the axial direction of the teeth completely through the tooth, shown in Figure 6a and 6b. 然而，间隙20也可以配置成沿轴向方向部分穿过齿6和沿径向方向完全穿过齿6，见图7a和7b。 However, the gap 20 may be arranged in the axial direction through the toothed portion 6 in the radial direction and completely through gear 6, see Figure 7a and 7b. 可以采用这两个实施例中的任一个实施例，只要漏磁通的传播路径上的磁阻达到足够的水平。 Either of these may be used in an embodiment of the embodiment, as long as the magnetic flux leakage reluctance propagation path reaches a sufficient level.
下面参照示出一个实施例的图8，两个沿圆周相邻的齿6的齿端部11被配置成彼此相向延伸这样一段距离，使得在该端部之间形成槽口SD。 Below with reference to an embodiment shown in FIG. 8, the two circumferentially adjacent teeth 6 of the end portion of the tooth 11 is configured to extend toward each other so that a distance between the end portion such that a notch is formed SD.
如图所示，齿部分6和7的端部11也沿轴向方向超过在该齿轴向两侧的齿的主要部分。 As shown, the ends 6 and 7 of the tooth portion 11 is also in the axial direction than the main part of the teeth in the axial direction on both sides of the teeth. 齿端部的这种延伸部分减少了空气间隙的磁阻，这造成磁化电流的相应减少。 This portion of the tooth extending end portion of the air gap reluctance reduced, which results in a corresponding reduction in the magnetization current. 这样便可弥补铁粉导磁率比较低的影响。 So you can make up a relatively low permeability iron effect.
采用粉末材料的另一个优点是，齿的截面形状可以是圆的或椭圆形的，使得可以避免线圈的锐弯曲，减少在棱角处穿透绝缘层的危险。 Another advantage of using powder material is that the sectional shape of the teeth may be rounded or oval such that sharp bending of the coil can be avoided, reducing the risk of penetration in the insulating layer at the edges. 这样便可以使用较薄的绝缘层，造成显著提高抗热性。 This enables the use of thinner insulation layer, resulting in significantly improved heat resistance. 绕组配置可以包括在各个齿上的非重叠绕组，这种绕组可以简化绕线操作，并可以达到很高的填塞率。 Winding configuration may include non-overlapping windings on each tooth, which can simplify winding winding operation, and can achieve high packing rate.
应当注意到，感应马达的转子(示于图1)最好是常规设计。 It should be noted that the rotor of the induction motor (shown in FIG. 1) is preferably of conventional design.
虽然上面仅说明本发明的一个实施例，但是技术人员可以明显看出，可以进行若干种改型，而不超出本发明的精神。 Although the above description is only one embodiment of the present invention, but the art will be apparent, several modifications can be made without departing from the spirit of the present invention.
因此，本发明可以应用于具有外部转子而不是所例示内部转子的电机中。 Accordingly, the present invention can be applied to an outer rotor instead of the exemplified inner rotor motor.
另外，定子材料可以包括叠层组件或与其它材料例如叠层组件连用的粉末材料，或可以用铸造法制造定子。 In addition, the stator component or material may comprise a laminate with other materials such as powdery material stack assembly used in conjunction, or may be manufactured by casting the stator.
|International Classification||H02K1/16, H02K1/14, H02K1/24, H02K16/04, H02K1/18|
|Cooperative Classification||H02K1/24, H02K1/148|
|European Classification||H02K1/24, H02K1/14D1|
|23 Apr 2003||C06||Publication|
|9 Jul 2003||C10||Entry into substantive examination|
|19 Jan 2005||C14||Grant of patent or utility model|
|22 Feb 2012||C17||Cessation of patent right|