CN105406629A - Motor stator and permanent magnet generator - Google Patents

Motor stator and permanent magnet generator Download PDF

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Publication number
CN105406629A
CN105406629A CN201510927661.3A CN201510927661A CN105406629A CN 105406629 A CN105406629 A CN 105406629A CN 201510927661 A CN201510927661 A CN 201510927661A CN 105406629 A CN105406629 A CN 105406629A
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Prior art keywords
stator
teeth
modules
stator modules
permanent magnet
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CN201510927661.3A
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高亚州
夏静
赵祥
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Goldwind Science and Technology Co Ltd
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Xinjiang Goldwind Science and Technology Co Ltd
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Priority to CN201510927661.3A priority Critical patent/CN105406629A/en
Publication of CN105406629A publication Critical patent/CN105406629A/en
Priority to PCT/CN2016/106432 priority patent/WO2017101637A1/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28Layout of windings or of connections between windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • H02K1/146Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148Sectional cores
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2706Inner rotors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2786Outer rotors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

本发明提供一种电机定子、永磁发电机。该电机定子的每极每相槽数q为2/5,且包括两套Y接的定子绕组,该两套定子绕组间相差30°电角度,电机定子包括独立加工的至少一个第一定子模块和至少一个第二定子模块。此种结构的电机定子应用至电机中可以提高电机性能。

The invention provides a motor stator and a permanent magnet generator. The number of slots q per pole and phase of the motor stator is 2/5, and includes two sets of Y-connected stator windings, the difference between the two sets of stator windings is 30° electrical angle, and the motor stator includes at least one first stator independently processed module and at least one second stator module. Applying the motor stator with this structure to the motor can improve the performance of the motor.

Description

电机定子、永磁发电机Motor stator, permanent magnet generator

技术领域technical field

本发明涉及发电机领域,尤其涉及一种电机定子、永磁发电机。The invention relates to the field of generators, in particular to a motor stator and a permanent magnet generator.

背景技术Background technique

随着大型永磁发电机容量的提高,发电机的体积和尺寸也相应增大,从而造成发电机定子在制造和运输方面的成本增加。定子铁心分瓣技术能够很好地解决由于定子尺寸增大带来的制造成本高和运输不便的问题。目前,定子铁心分瓣技术主要应用于每极每相槽数为1的单层绕组结构或集中绕组结构。As the capacity of large permanent magnet generators increases, the volume and size of the generators also increase accordingly, resulting in an increase in the cost of manufacturing and transporting the stator of the generator. The stator core split technology can well solve the problems of high manufacturing cost and inconvenient transportation caused by the increase of stator size. At present, the stator core split technology is mainly applied to the single-layer winding structure or concentrated winding structure with one slot per pole and one phase.

单层绕组技术虽然能解决定子制造成本高和运输不便的问题,但是由于单层绕组的定子采用整距节距设计,其无法有效地削弱5、7次谐波磁场的含量,会带来较大的转矩脉动问题,使得发电机的振动和噪声超标。Although the single-layer winding technology can solve the problems of high manufacturing cost and inconvenient transportation of the stator, since the stator of the single-layer winding adopts a full-pitch design, it cannot effectively weaken the content of the 5th and 7th harmonic magnetic field, which will bring more The large torque ripple problem makes the vibration and noise of the generator exceed the standard.

此外,单层绕组的不同相位下的线圈端部形状不同,线圈制造比较困难。集中绕组具有线圈端部长度小,不同相位下的线圈形状相同等优点。但现有技术中,采用集中绕组的永磁电机为了提高磁钢利用率,定子均采用半闭口槽设计原则,导致电机不能整体下线,只能进行单齿下线,然后再与定子轭部和定子支架装配在一起。对于大型永磁电机而言,由于其定子槽数较多,定子采用半闭口槽设计使得电机装配工艺复杂,此外由于电机装配部件较多,无形中增加了电机潜在隐患点的数量,降低了电机的可靠性。In addition, the shape of the end of the coil under different phases of the single-layer winding is different, and it is difficult to manufacture the coil. Concentrated winding has the advantages of small coil end length and the same coil shape under different phases. However, in the existing technology, in order to improve the utilization rate of the magnet steel, the permanent magnet motor with concentrated winding adopts the semi-closed slot design principle for the stator, so that the motor cannot be rolled off the assembly line as a whole, and only a single tooth can be rolled off the assembly line, and then the stator yoke Assembled with the stator bracket. For large permanent magnet motors, due to the large number of stator slots, the semi-closed slot design of the stator makes the motor assembly process complicated. In addition, due to the large number of motor assembly parts, the number of potential hidden danger points of the motor is virtually increased, and the motor is reduced. reliability.

发明内容Contents of the invention

本发明的实施例提供一种电机定子、永磁发电机,以解决永磁发电机性能差的问题。Embodiments of the present invention provide a motor stator and a permanent magnet generator to solve the problem of poor performance of the permanent magnet generator.

为达到上述目的,本发明的实施例提供一种电机定子,电机定子的每极每相槽数q为2/5,且包括两套Y接的定子绕组,该两套定子绕组间相差30°电角度,电机定子包括独立加工的至少一个第一定子模块和至少一个第二定子模块。In order to achieve the above object, an embodiment of the present invention provides a motor stator, the number of slots q per pole and phase of the motor stator is 2/5, and includes two sets of Y-connected stator windings, and the difference between the two sets of stator windings is 30° From an electrical point of view, the motor stator includes at least one first stator module and at least one second stator module that are processed independently.

进一步地,定子的定子槽为开口槽。Further, the stator slot of the stator is an open slot.

进一步地,两套定子绕组的绕组线圈节距为1,且每个绕组线圈的匝数相等。Further, the pitch of the winding coils of the two sets of stator windings is 1, and the number of turns of each winding coil is equal.

进一步地,定子包括相间设置的至少一个第一定子模块和至少一个第二定子模块。Further, the stator includes at least one first stator module and at least one second stator module arranged alternately.

进一步地,第一定子模块为12个,第二定子模块为12个,则第一定子模块的齿数为6个,第二定子模块的齿数为6个;或第一定子模块为4个,第二定子模块为4个,则第一定子模块的齿数为18个,第二定子模块的齿数为18个;或第一定子模块为24个,第二定子模块为24个,则第一定子模块的齿数为3个,第二定子模块的齿数为3个;或第一定子模块为36个,第二定子模块为36个,则第一定子模块的齿数为2个,第二定子模块的齿数为2个;或第一定子模块为72个,第二定子模块为72个,则第一定子模块的齿数为1个,第二定子模块的齿数为1个。Further, if there are 12 first stator modules and 12 second stator modules, then the number of teeth of the first stator module is 6, and the number of teeth of the second stator module is 6; or the number of teeth of the first stator module is 4 and the second stator module is 4, then the number of teeth of the first stator module is 18, and the number of teeth of the second stator module is 18; or the number of teeth of the first stator module is 24, and the number of teeth of the second stator module is 24, Then the number of teeth of the first stator module is 3, and the number of teeth of the second stator module is 3; or the number of teeth of the first stator module is 36, and the number of teeth of the second stator module is 36, then the number of teeth of the first stator module is 2 , the number of teeth of the second stator module is 2; or the number of teeth of the first stator module is 72, and the number of teeth of the second stator module is 72, then the number of teeth of the first stator module is 1, and the number of teeth of the second stator module is 1 indivual.

进一步地,定子包括多个定子齿,定子齿为平行齿。Further, the stator includes a plurality of stator teeth, and the stator teeth are parallel teeth.

根据本发明的另一方面,提供一种永磁发电机,包括定子和转子,永磁发电机为双3相,且永磁发电机的每极每相槽数q为2/5,定子包括两套定子绕组,且两套定子绕组间相差30°电角度,两套定子绕组均为Y接,且两套定子绕组均为双层集中绕组。According to another aspect of the present invention, a permanent magnet generator is provided, including a stator and a rotor. The permanent magnet generator is a double 3-phase, and the number of slots q per pole and phase of the permanent magnet generator is 2/5, and the stator includes Two sets of stator windings, and the electrical angle difference between the two sets of stator windings is 30°, both sets of stator windings are Y-connected, and both sets of stator windings are double-layer concentrated windings.

进一步地,定子的定子槽为开口槽。Further, the stator slot of the stator is an open slot.

进一步地,定子包括多个定子齿,定子齿为平行齿。Further, the stator includes a plurality of stator teeth, and the stator teeth are parallel teeth.

进一步地,两套定子绕组的绕组线圈节距为1,且每个绕组线圈的匝数相等。Further, the pitch of the winding coils of the two sets of stator windings is 1, and the number of turns of each winding coil is equal.

进一步地,定子包括相间设置的至少一个第一定子模块和至少一个第二定子模块。Further, the stator includes at least one first stator module and at least one second stator module arranged alternately.

进一步地,第一定子模块为12个,第二定子模块为12个,则第一定子模块的齿数为6个,第二定子模块的齿数为6个;或第一定子模块为4个,第二定子模块为4个,则第一定子模块的齿数为18个,第二定子模块的齿数为18个;或第一定子模块为24个,第二定子模块为24个,则第一定子模块的齿数为3个,第二定子模块的齿数为3个;或第一定子模块为36个,第二定子模块为36个,则第一定子模块的齿数为2个,第二定子模块的齿数为2个;或第一定子模块为72个,第二定子模块为72个,则第一定子模块的齿数为1个,第二定子模块的齿数为1个。Further, if there are 12 first stator modules and 12 second stator modules, then the number of teeth of the first stator module is 6, and the number of teeth of the second stator module is 6; or the number of teeth of the first stator module is 4 and the second stator module is 4, then the number of teeth of the first stator module is 18, and the number of teeth of the second stator module is 18; or the number of teeth of the first stator module is 24, and the number of teeth of the second stator module is 24, Then the number of teeth of the first stator module is 3, and the number of teeth of the second stator module is 3; or the number of teeth of the first stator module is 36, and the number of teeth of the second stator module is 36, then the number of teeth of the first stator module is 2 , the number of teeth of the second stator module is 2; or the number of teeth of the first stator module is 72, and the number of teeth of the second stator module is 72, then the number of teeth of the first stator module is 1, and the number of teeth of the second stator module is 1 indivual.

进一步地,第一定子模块上的六个绕组线圈由第一端至第二端的引出线依次是AX、xa、YB、by、CZ、zc。Further, the lead-out lines of the six winding coils on the first stator module from the first end to the second end are AX, xa, YB, by, CZ, zc in sequence.

进一步地,第二定子模块上的六个绕组线圈由第一端至第二端的引出线依次是XA、ax、BY、yb、ZC、cz。Further, the lead-out lines of the six winding coils on the second stator module from the first end to the second end are XA, ax, BY, yb, ZC, and cz in sequence.

进一步地,转子包括径向表贴式磁钢。Further, the rotor includes radial surface-mounted magnetic steel.

进一步地,磁钢与定子的外径的最大气隙长度与最小气隙长度之比为3:2。Further, the ratio of the maximum air gap length to the minimum air gap length between the magnetic steel and the outer diameter of the stator is 3:2.

进一步地,转子磁极为斜极,磁钢的第一侧的第一端与第二端在转子的周向上具有间距Kt,第一端为沿转子轴向的第一端,第二端为沿转子轴向的第二端。Further, the rotor magnetic pole is oblique, the first end and the second end of the first side of the magnetic steel have a distance Kt in the circumferential direction of the rotor, the first end is the first end along the rotor axial direction, and the second end is along the The second axial end of the rotor.

进一步地,该间距Kt为1倍定子齿距。Further, the pitch Kt is 1 times the pitch of the stator teeth.

进一步地,磁钢的侧边与磁钢的底边之间具有第一夹角a,第一夹角a的取值范围为40°至80°。Further, there is a first included angle a between the side of the magnetic steel and the bottom of the magnetic steel, and the value range of the first included angle a is 40° to 80°.

进一步地,第一夹角a的取值范围为65°至75°。Further, the value range of the first included angle a is 65° to 75°.

本发明的实施例的电机定子采用双Y移30°集中绕组结构,其每极每相槽数q为2/5,应用在永磁发电机中时能够在有效地降低发电机定子绕组和铁心装配难度,提高定子绕组系数和转子磁钢的利用率,减小永磁发电机负载电流和在负载工况下的转矩脉动值,降低发电机的振动和噪声,延长发电机的寿命及提高发电机的可靠性;还可以应用于大功率永磁发电机的模块化设计。其包括独立加工的至少一个第一定子模块和至少一个第二定子模块,采用分瓣技术可以降低加工难度和成本。The motor stator of the embodiment of the present invention adopts a double Y-shifted 30° concentrated winding structure, and the number of slots q per pole and phase is 2/5. When applied to a permanent magnet generator, it can effectively reduce the stator winding and iron core of the generator. Difficulty in assembly, improve stator winding coefficient and utilization rate of rotor magnet, reduce permanent magnet generator load current and torque ripple value under load conditions, reduce generator vibration and noise, prolong generator life and improve Generator reliability; it can also be applied to the modular design of high-power permanent magnet generators. It includes at least one first stator module and at least one second stator module that are processed independently, and the processing difficulty and cost can be reduced by adopting the split technology.

附图说明Description of drawings

图1为本发明的实施例的永磁发电机的定子分瓣的结构示意图;Fig. 1 is the structural representation of the stator split lobe of the permanent magnet generator of the embodiment of the present invention;

图2为本发明的实施例的永磁发电机的定子的第一定子模块的结构示意图;Fig. 2 is the structural representation of the first stator module of the stator of the permanent magnet generator of the embodiment of the present invention;

图3为本发明的实施例的永磁发电机的第一定子模块的绕组线圈引出线的结构示意图;Fig. 3 is the structural representation of the lead-out wire of the winding coil of the first stator module of the permanent magnet generator of the embodiment of the present invention;

图4为本发明的实施例的永磁发电机的定子的第二定子模块的结构示意图;4 is a schematic structural view of a second stator module of a stator of a permanent magnet generator according to an embodiment of the present invention;

图5为本发明的实施例的永磁发电机的第二定子模块的绕组线圈引出线的结构示意图;5 is a schematic structural view of the lead-out wires of the winding coils of the second stator module of the permanent magnet generator according to an embodiment of the present invention;

图6为本发明的实施例的永磁发电机的转子的横截面的局部结构示意图;Fig. 6 is a partial structural schematic diagram of the cross section of the rotor of the permanent magnet generator of the embodiment of the present invention;

图7为本发明的实施例的永磁发电机的转子的轴向的局部结构示意图;7 is a schematic diagram of the axial partial structure of the rotor of the permanent magnet generator according to the embodiment of the present invention;

图8为本发明的实施例的永磁发电机的转子与定子的气隙的局部放大图;Fig. 8 is a partially enlarged view of the air gap between the rotor and the stator of the permanent magnet generator of the embodiment of the present invention;

图9为本发明的实施例的永磁发电机的定子的其中一套定子绕组的连线示意图;Fig. 9 is a schematic diagram of wiring of one set of stator windings of the stator of the permanent magnet generator according to the embodiment of the present invention;

图10为本发明的实施例的永磁发电机的定子的另一套定子绕组的连线示意图。Fig. 10 is a schematic diagram of another set of stator windings of the stator of the permanent magnet generator according to the embodiment of the present invention.

附图标记说明:Explanation of reference signs:

1、第一定子模块的第一齿;1’、第二定子模块的第一齿;2、第一定子模块的第二齿;2’、第二定子模块的第二齿;3、第一定子模块的第三齿;3’、第二定子模块的第三齿;4、第一定子模块的第四齿;4’、第二定子模块的第四齿;5、第一定子模块的第五齿;5’、第二定子模块的第五齿;6、第一定子模块的第六齿;6’、第二定子模块的第六齿;10、定子;11、绕组线圈;12、第一定子模块;13、第二定子模块;20、转子;21、磁钢。1, the first tooth of the first stator module; 1', the first tooth of the second stator module; 2, the second tooth of the first stator module; 2', the second tooth of the second stator module; 3, The third tooth of the first stator module; 3', the third tooth of the second stator module; 4, the fourth tooth of the first stator module; 4', the fourth tooth of the second stator module; 5, the first The fifth tooth of the stator module; 5', the fifth tooth of the second stator module; 6, the sixth tooth of the first stator module; 6', the sixth tooth of the second stator module; 10, the stator; 11, Winding coil; 12, first stator module; 13, second stator module; 20, rotor; 21, magnetic steel.

具体实施方式detailed description

下面结合附图对本发明实施例的电机定子、永磁发电机进行详细描述。The motor stator and the permanent magnet generator according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

参阅图1,在本实施例中,电机定子10采用定子分瓣技术加工,该电机定子的每极每相槽数q为2/5,且包括两套Y接的定子绕组,该两套定子绕组间相差30°电角度,电机定子包括独立加工的至少一个第一定子模块12和至少一个第二定子模块13。该电机定子可以应用至发电机中,也可以应用至电动机中,其具有加工成本低、运输方便、电磁和机械性能好的优点。Referring to Fig. 1, in the present embodiment, the motor stator 10 is processed by stator split technology, the number of slots q per pole and phase of the motor stator is 2/5, and includes two sets of Y-connected stator windings, the two sets of stators The electrical angle difference between the windings is 30°, and the motor stator includes at least one first stator module 12 and at least one second stator module 13 that are processed independently. The motor stator can be applied to a generator or a motor, and has the advantages of low processing cost, convenient transportation, and good electromagnetic and mechanical properties.

为了降低定子的运输和生产成本,定子10采用定子分瓣技术加工。定子10包括相间设置的至少一个第一定子模块12和至少一个第二定子模块13。将定子10沿圆周方向均匀分割成多瓣,每瓣单独加工可以提高加工效率且减小加工模具和工装的尺寸,进而降低加工成本,同时更加便于运输,降低运输成本。使用时只需将各瓣依照预定的顺序和位置组合在一起即可形成定子10。由于本实施例中,一套定子绕组的三相呈120°电角度,因此第一定子模块12和第二定子模块13相间设置。In order to reduce the transportation and production costs of the stator, the stator 10 is processed by stator split technology. The stator 10 includes at least one first stator module 12 and at least one second stator module 13 arranged alternately. Dividing the stator 10 into multiple lobes evenly along the circumferential direction, each lobe can be processed separately can improve the processing efficiency and reduce the size of the processing mold and tooling, thereby reducing the processing cost, and at the same time, it is more convenient for transportation and reduces the transportation cost. When in use, the stator 10 can be formed by combining the petals according to the predetermined sequence and position. Since in this embodiment, the three phases of a set of stator windings form an electrical angle of 120°, the first stator module 12 and the second stator module 13 are arranged alternately.

参阅图2,优选地,为了方便下线生产,定子的定子槽为开口槽,定子10的定子齿均为平行齿,这样可以顺利下线加工。由于绕组线圈11的两个边相互平行,为使绕组线圈11可以很好地与定子齿配合,因而定子齿为平行齿。Referring to FIG. 2 , preferably, in order to facilitate off-line production, the stator slots of the stator are open slots, and the stator teeth of the stator 10 are all parallel teeth, so that off-line processing can be carried out smoothly. Since the two sides of the winding coil 11 are parallel to each other, in order to make the winding coil 11 fit well with the stator teeth, the stator teeth are parallel teeth.

优选地,为了提高可靠性,两套定子绕组的绕组线圈11节距为1,且每个绕组线圈11的匝数相等。绕组线圈11的节距为1可以使定子齿较宽,使绕线更容易,且不易将绕组折断。Preferably, in order to improve reliability, the pitch of the winding coils 11 of the two sets of stator windings is 1, and the number of turns of each winding coil 11 is equal. The pitch of the winding coils 11 being 1 can make the stator teeth wider, making winding easier and less likely to break the winding.

第一定子模块12和第二定子模块13的数量及其齿数可以根据需要确定,包括但不限于以下几种示例性情况:The number of the first stator module 12 and the second stator module 13 and the number of teeth thereof can be determined according to needs, including but not limited to the following exemplary cases:

第一定子模块12为12个,第二定子模块13为12个,则第一定子模块12的齿数为6个,第二定子模块13的齿数为6个。或者There are 12 first stator modules 12 and 12 second stator modules 13 , so the number of teeth of the first stator module 12 is 6, and the number of teeth of the second stator module 13 is 6. or

第一定子模块12为4个,第二定子模块13为4个,则第一定子模块12的齿数为18个,第二定子模块13的齿数为18个。或者There are 4 first stator modules 12 and 4 second stator modules 13 , so the number of teeth of the first stator module 12 is 18, and the number of teeth of the second stator module 13 is 18. or

第一定子模块12为24个,第二定子模块13为24个,则第一定子模块12的齿数为3个,第二定子模块13的齿数为3个。或者There are 24 first stator modules 12 and 24 second stator modules 13 , so the number of teeth of the first stator module 12 is 3, and the number of teeth of the second stator module 13 is 3. or

第一定子模块12为36个,第二定子模块13为36个,则第一定子模块12的齿数为2个,第二定子模块13的齿数为2个。或者There are 36 first stator modules 12 and 36 second stator modules 13 , so the number of teeth of the first stator module 12 is 2, and the number of teeth of the second stator module 13 is 2. or

第一定子模块12为72个,第二定子模块13为72个,则第一定子模块12的齿数为1个,第二定子模块13的齿数为1个。There are 72 first stator modules 12 and 72 second stator modules 13 , so the number of teeth of the first stator module 12 is 1, and the number of teeth of the second stator module 13 is 1.

在另一实施例中,还提供一种永磁发电机,其包括定子和转子,永磁发电机为双3相,且永磁发电机的每极每相槽数q为2/5,定子包括两套定子绕组,且两套定子绕组间相差30°电角度,两套定子绕组均为Y接,且两套定子绕组均为双层集中绕组。采用分数槽且使两套定子绕组之间的电角度相差30°可以减少定子绕组的第5次和第7次谐波磁场含量、降低脉动转矩。In another embodiment, there is also provided a permanent magnet generator, which includes a stator and a rotor, the permanent magnet generator is a double 3-phase, and the number of slots q per pole and phase of the permanent magnet generator is 2/5, the stator It includes two sets of stator windings, and the electrical angle difference between the two sets of stator windings is 30°. Both sets of stator windings are Y-connected, and both sets of stator windings are double-layer concentrated windings. Using fractional slots and making the electrical angle difference between the two sets of stator windings 30° can reduce the 5th and 7th harmonic magnetic field content of the stator windings and reduce the ripple torque.

优选地,定子10的定子槽为开口槽。采用双层集中绕组和开口槽可以提高永磁发电机的可靠性。Preferably, the stator slot of the stator 10 is an open slot. The reliability of the permanent magnet generator can be improved by adopting double-layer concentrated windings and open slots.

再如图1所示,为了降低永磁发电机的运输和生产成本,永磁发电机的定子10采用定子分瓣技术加工。定子10包括相间设置的至少一个第一定子模块12和至少一个第二定子模块13。将定子10沿圆周方向均匀分割成多瓣,每瓣单独加工可以提高加工效率且减小加工模具和工装的尺寸,进而降低加工成本,同时更加便于运输,降低运输成本。使用时只需将各瓣依照预定的顺序和位置组合在一起即可形成定子10。As shown in FIG. 1 , in order to reduce the transportation and production costs of the permanent magnet generator, the stator 10 of the permanent magnet generator is processed by stator split technology. The stator 10 includes at least one first stator module 12 and at least one second stator module 13 arranged alternately. Dividing the stator 10 into multiple lobes evenly along the circumferential direction, each lobe can be processed separately can improve the processing efficiency and reduce the size of the processing mold and tooling, thereby reducing the processing cost, and at the same time, it is more convenient for transportation and reduces the transportation cost. When in use, the stator 10 can be formed by combining the petals according to the predetermined sequence and position.

在本实施例中,永磁发电机为外转子,内定子结构。永磁发电机的相数为双3相(即6相),极数为120极,定子槽数为144槽,定子10的相邻两个定子槽的相差为150°电角度。当然,永磁发电机的极数和定子槽数并不限于此,在其他实施例中,永磁发电机的极数和定子槽数可以根据需要选择,只要保证每极每相槽数q为2/5即可。In this embodiment, the permanent magnet generator has an outer rotor and an inner stator structure. The number of phases of the permanent magnet generator is double 3 phases (ie 6 phases), the number of poles is 120 poles, the number of stator slots is 144 slots, and the phase difference between two adjacent stator slots of the stator 10 is 150° electrical angle. Of course, the number of poles and the number of stator slots of the permanent magnet generator are not limited thereto. In other embodiments, the number of poles and the number of stator slots of the permanent magnet generator can be selected according to needs, as long as the number of slots q per pole and phase is guaranteed to be 2/5 is enough.

当然,永磁发电机也可为外定子,内转子结构。Of course, the permanent magnet generator can also be an outer stator and an inner rotor structure.

在本实施例中,每个第一定子模块具有6个定子齿,每个第二定子模块具有6个定子齿,定子10具有12个第一定子模块和12个第二定子模块13。当然,在其他实施例中,第一定子模块12和第二定子模块13的齿数可以根据需要确定,相应的,定子10包括的第一定子模块12和第二定子模块13的数量也可根据需要确定。例如:若第一定子模块12和第二定子模块13的齿数是18,则定子10包括第一定子模块12和第二定子模块13的数量为各4个。若第一定子模块12和第二定子模块13的齿数是12、24、36或72,则对应的定子10包括第一定子模块12和第二定子模块13的数量为各6、3、2或1。In this embodiment, each first stator module has 6 stator teeth, each second stator module has 6 stator teeth, and the stator 10 has 12 first stator modules and 12 second stator modules 13 . Of course, in other embodiments, the number of teeth of the first stator module 12 and the second stator module 13 can be determined as required, and correspondingly, the number of the first stator module 12 and the second stator module 13 included in the stator 10 can also be Determine as needed. For example: if the number of teeth of the first stator module 12 and the second stator module 13 is 18, the stator 10 includes four first stator modules 12 and four second stator modules 13 . If the number of teeth of the first stator module 12 and the second stator module 13 is 12, 24, 36 or 72, then the corresponding stator 10 includes the number of the first stator module 12 and the second stator module 13 is 6, 3, 2 or 1.

再如图2和图3所示,第一定子模块12的定子铁芯上的定子槽为开口槽。第一定子模块12上的绕组线圈11由第一端至第二端的引出线依次是AX、xa、YB、by、CZ、zc。As shown in FIGS. 2 and 3 , the stator slots on the stator core of the first stator module 12 are open slots. The lead-out lines of the winding coil 11 on the first stator module 12 from the first end to the second end are AX, xa, YB, by, CZ, zc in sequence.

也即单个第一定子模块12中,A1相的绕组线圈11为1个,即绕设在第一定子模块的第一齿1上的绕组AX,其中引出端A从第一定子模块的第一齿1的左侧(此左侧为图2和图3中的左侧)引出,引出端X从第一定子模块的第一齿1的右侧(此右侧为图2和图3中的右侧)引出。That is to say, in a single first stator module 12, there is one winding coil 11 of phase A1, that is, the winding AX wound on the first tooth 1 of the first stator module, wherein the lead-out end A is from the first stator module The left side of the first tooth 1 of the first stator module (this left side is the left side in Fig. 2 and Fig. on the right side in Figure 3).

B1相的绕组线圈11为1个,即绕设在第一定子模块的第三齿3上的绕组YB,其中引出端Y从第一定子模块的第三齿3的左侧引出,引出端B从第一定子模块的第三齿3的右侧引出。There is one winding coil 11 of the B1 phase, that is, the winding YB wound on the third tooth 3 of the first stator module, wherein the leading end Y is drawn from the left side of the third tooth 3 of the first stator module, and the lead-out Terminal B emerges from the right side of the third tooth 3 of the first stator module.

C1相的绕组线圈11为1个,即绕设在第一定子模块的第五齿5上的绕组CZ,其中引出端C从第一定子模块的第五齿5的左侧引出,引出端Z从第一定子模块的第五齿5的右侧引出。There is one winding coil 11 of the C1 phase, that is, the winding CZ wound on the fifth tooth 5 of the first stator module, wherein the lead-out end C is drawn from the left side of the fifth tooth 5 of the first stator module, and the lead-out End Z emerges from the right side of the fifth tooth 5 of the first stator module.

其中A1相、B1相和C1相为一套定子绕组的组成部分。此套定子绕组中,引出端X、引出端Y和引出端Z连接在一起,引出端A、引出端B和引出端C引出形成此套Y接法定子绕组的出线端(如图9所示)。Among them, phase A1, phase B1 and phase C1 are part of a set of stator windings. In this set of stator windings, the terminal X, the terminal Y and the terminal Z are connected together, and the terminal A, the terminal B and the terminal C are drawn out to form the terminal of the Y-connected stator winding (as shown in Figure 9 ).

A2相的绕组线圈为1个,即绕设在第一定子模块的第二齿2上的绕组xa,其中引出端x从第一定子模块的第二齿2的左侧引出,引出端a从第一定子模块的第二齿2的右侧引出。There is one winding coil for phase A2, that is, the winding xa wound on the second tooth 2 of the first stator module. a leads from the right side of the second tooth 2 of the first stator module.

B2相的绕组线圈11为1个,即绕设在第一定子模块的第四齿4上的绕组by,其中引出端b从第一定子模块的第四齿4的左侧引出,引出端y从第一定子模块的第四齿4的右侧引出。There is one winding coil 11 of the B2 phase, that is, the winding by wound on the fourth tooth 4 of the first stator module, wherein the lead-out end b is drawn from the left side of the fourth tooth 4 of the first stator module, and the lead-out Terminal y emerges from the right side of the fourth tooth 4 of the first stator module.

C2相的绕组线圈11为1个,即绕设在第一定子模块的第六齿6上的绕组zc,其中引出端z从第一定子模块的第六齿6的左侧引出,引出端c从第一定子模块的第六齿6右的侧引出。There is one winding coil 11 of the C2 phase, that is, the winding zc wound on the sixth tooth 6 of the first stator module, wherein the lead z is drawn from the left side of the sixth tooth 6 of the first stator module, and the lead z Terminal c emerges from the right side of the sixth tooth 6 of the first stator module.

其中A2相、B2相和C2相为另一套定子绕组的组成部分。该另一套定子绕组中,引出端x、引出端y和引出端z连接在一起,引出端a、引出端b和引出端c形成该另一套Y接法定子绕组的出线端(如图10所示)。Among them, phase A2, phase B2 and phase C2 are components of another set of stator windings. In the other set of stator windings, the terminal x, the terminal y and the terminal z are connected together, and the terminal a, the terminal b and the terminal c form the terminal of the other Y-connected stator winding (as shown in the figure 10).

参见图4和图5所示,第二定子模块13的定子铁芯上的定子槽为开口槽。第二定子模块13上的绕组线圈11由第一端至第二端的引出线依次是XA、ax、BY、yb、ZC、cz。Referring to FIG. 4 and FIG. 5 , the stator slots on the stator core of the second stator module 13 are open slots. The lead-out lines of the winding coils 11 on the second stator module 13 from the first end to the second end are XA, ax, BY, yb, ZC, cz in sequence.

也即单个第二定子模块13中,A1相的绕组线圈11为1个,即绕设在第二定子模块的第一齿1’上的绕组XA,其中引出端X从第二定子模块的第一齿1’的左侧引出,引出端A从第二定子模块的第一齿1’的右侧引出。That is to say, in a single second stator module 13, there is one winding coil 11 of phase A1, that is, the winding XA wound on the first tooth 1' of the second stator module, wherein the lead-out terminal X is connected from the first tooth 1' of the second stator module. One tooth 1' leads out from the left side, and the lead-out end A leads out from the right side of the first tooth 1' of the second stator module.

B1相的绕组线圈11为1个,即绕设在第二定子模块的第三齿3’上的绕组BY,其中引出端B从第二定子模块13的第三齿3’的左侧引出,引出端Y从第二定子模块13的第三齿3’的右侧引出。There is one winding coil 11 of the B1 phase, that is, the winding BY wound on the third tooth 3' of the second stator module, wherein the leading end B is drawn from the left side of the third tooth 3' of the second stator module 13, The leading end Y is led out from the right side of the third tooth 3 ′ of the second stator module 13 .

C1相的绕组线圈11为1个,即绕设在第二定子模块13的第五齿5’上的绕组ZC,其中引出端Z从第二定子模块13的第五齿5’的左侧引出,引出端C从第二定子模块13的第五齿5’的右侧引出。The winding coil 11 of C1 phase is one, that is, the winding ZC wound on the fifth tooth 5' of the second stator module 13, wherein the leading end Z is drawn from the left side of the fifth tooth 5' of the second stator module 13 , the leading end C is led out from the right side of the fifth tooth 5 ′ of the second stator module 13 .

同样地,第二定子模块13中的A1相、B1相和C1相与第一定子模块12中的A1相、B1相和C1相相同,为同一套定子绕组的组成部分。引出端X、引出端Y和引出端Z连接在一起,引出端A、引出端B和引出端C引出形成此套Y接法定子绕组的出线端(如图9所示)。Similarly, phases A1, B1 and C1 in the second stator module 13 are the same as phases A1, B1 and C1 in the first stator module 12, and are components of the same set of stator windings. Lead-out X, lead-out Y and lead-out Z are connected together, and lead-out A, lead-out B and lead-out C lead out to form the lead-out ends of this set of Y-connected stator windings (as shown in FIG. 9 ).

A2相的绕组线圈11为1个,即绕设在第二定子模块13的第二齿2’上的绕组ax,其中引出端a从第二定子模块13的第二齿2’的左侧引出,引出端x从第二定子模块13的第二齿2’的右侧引出。B2相的绕组线圈11为1个,即绕设在第二定子模块13的第四齿4’上的绕组yb,其中引出端y从第二定子模块13的第四齿4’的左侧引出,引出端b从第二定子模块13的第四齿4’的右侧引出。The A2 phase winding coil 11 is one, that is, the winding ax wound on the second tooth 2' of the second stator module 13, wherein the leading end a is drawn from the left side of the second tooth 2' of the second stator module 13 , the leading end x is led out from the right side of the second tooth 2 ′ of the second stator module 13 . There is one winding coil 11 of the B2 phase, that is, the winding yb wound on the fourth tooth 4' of the second stator module 13, wherein the leading end y is drawn from the left side of the fourth tooth 4' of the second stator module 13 , the leading end b is led out from the right side of the fourth tooth 4 ′ of the second stator module 13 .

C2相的绕组线圈11为1个,即绕设在第二定子模块13的第六齿6’上的绕组cz,其中引出端c从第二定子模块13的第六齿6’的左侧引出,引出端z从第二定子模块13的第六齿6’的右侧引出。The winding coil 11 of the C2 phase is one, that is, the winding cz wound on the sixth tooth 6' of the second stator module 13, wherein the leading end c is drawn from the left side of the sixth tooth 6' of the second stator module 13 , the leading end z is led out from the right side of the sixth tooth 6 ′ of the second stator module 13 .

同样地,第二定子模块13中的A2相、B2相和C2相与第一定子模块12中的A2相、B2相和C2相相同,为该另一套定子绕组的组成部分。引出端x、引出端y和引出端z连接在一起,引出端a、引出端b和引出端c形成该另一套Y接法定子绕组的出线端(如图10所示)。Likewise, phases A2, B2 and C2 in the second stator module 13 are the same as phases A2, B2 and C2 in the first stator module 12, and are components of another set of stator windings. The terminal x, the terminal y and the terminal z are connected together, and the terminal a, the terminal b and the terminal c form the terminal of another Y-connected stator winding (as shown in FIG. 10 ).

定子10由多个第一定子模块12和第二定子模块13相间设置构成。每个第一定子模块12和每个第二定子模块13的引出端A、引出端B、引出端C、引出端a、引出端b和引出端c根据设计需要和其他定子模块中的同相引出端进行串并联连接或直接与端环连接。最终形成定子10的两套定子绕组。The stator 10 is composed of a plurality of first stator modules 12 and second stator modules 13 arranged alternately. The terminal A, terminal B, terminal C, terminal a, terminal b and terminal c of each first stator module 12 and each second stator module 13 are in phase with those in other stator modules according to design requirements The leading end is connected in series and parallel or directly connected with the end ring. Finally, two sets of stator windings of the stator 10 are formed.

这两套定子绕组之间相差30°电角度。同一套定子绕组中的三相绕组互差120°电角度,由此可以确保降低第5次和第7次谐波含量,减小转矩脉动。同时每个绕组线圈11均为双层集中式绕组,绕组线圈11的节距为1,且每个绕组线圈11的匝数都相等,且定子槽为开口槽使得在定子分瓣生产时,线圈制造工艺简单,降低采用集中式绕组的发电机装配工艺的复杂度并提高可靠性。There is a 30° electrical angle difference between the two sets of stator windings. The three-phase windings in the same set of stator windings have an electrical angle difference of 120°, which can ensure the reduction of the 5th and 7th harmonic content and reduce the torque ripple. Simultaneously, each winding coil 11 is a double-layer concentrated winding, the pitch of the winding coil 11 is 1, and the number of turns of each winding coil 11 is all equal, and the stator slot is an open slot so that when the stator is split into pieces, the coil The manufacturing process is simple, and the complexity of the assembly process of the generator adopting the centralized winding is reduced and the reliability is improved.

在本实施例中,定子10的定子齿均为平行齿,这样可以顺利下线加工。由于绕组线圈11的两个边相互平行,为使绕组线圈11可以很好地与定子齿配合,因而定子齿为平行齿。参见图6和图7所示,在本实施例中,转子20包括径向表贴式磁钢21,由此可以降低永磁体的漏磁系数,提高永磁体的利用率。具体地,沿转子支架的圆周方向,永磁体依次间隔地固定在转子支架的支架内壁上。且永磁体朝向定子10的磁极为N极与S极相间。由此在转子20上形成了120个磁极。图6和图7中示出了转子的局部结构,图中共5个磁极,两个N极朝向定子10的磁钢21,三个S极朝向定子10的磁钢21,其中N极朝向定子10的磁钢21与S极朝向定子10的磁钢21相间地固定在转子支架的内壁上。In this embodiment, the stator teeth of the stator 10 are all parallel teeth, which can be processed off-line smoothly. Since the two sides of the winding coil 11 are parallel to each other, in order to make the winding coil 11 fit well with the stator teeth, the stator teeth are parallel teeth. Referring to FIG. 6 and FIG. 7 , in this embodiment, the rotor 20 includes radial surface-mounted magnets 21 , thereby reducing the flux leakage coefficient of the permanent magnets and improving the utilization rate of the permanent magnets. Specifically, along the circumferential direction of the rotor support, the permanent magnets are sequentially fixed on the inner wall of the rotor support at intervals. And the magnetic poles of the permanent magnets facing the stator 10 alternate between N poles and S poles. As a result, 120 magnetic poles are formed on the rotor 20 . Figure 6 and Figure 7 show the partial structure of the rotor, in which there are 5 magnetic poles in total, two N poles face the magnet steel 21 of the stator 10, three S poles face the magnet steel 21 of the stator 10, and the N poles face the stator 10 The magnetic steel 21 and the magnetic steel 21 with the S pole facing the stator 10 are alternately fixed on the inner wall of the rotor support.

优选地,磁钢21采用斜极设计。也即磁钢21的第一侧的第一端(第一端为沿转子20轴向的第一端)与第二端(第二端为沿转子20轴向的第二端)在转子20的周向上具有间距Kt。磁钢21的斜极尺寸(也即间距Kt)为一倍定子齿距。Preferably, the magnetic steel 21 is designed with oblique poles. That is, the first end (the first end is the first end along the axial direction of the rotor 20 ) and the second end (the second end is the second end along the axial direction of the rotor 20 ) of the first side of the magnetic steel 21 are on the rotor 20 has a pitch Kt in the circumferential direction. The size of the oblique poles of the magnetic steel 21 (that is, the pitch Kt) is one time of the stator tooth pitch.

也即,如图7所示,磁钢21的相同边的最上端(第一端)和最下端(第二端)在圆周方向上的间距Kt的弧长在该磁极圆周上所对应的机械角度为2.5°,正好等于1个定子齿距对应的机械角度360°÷144=2.5°。That is, as shown in Figure 7, the arc length of the distance Kt between the uppermost end (first end) and the lowermost end (second end) of the same side of the magnetic steel 21 in the circumferential direction corresponds to the mechanical The angle is 2.5°, which is exactly equal to the mechanical angle 360°÷144=2.5° corresponding to one stator tooth pitch.

如图8所示,优选地,磁钢21的朝向定子10的一面为弧面,每个磁钢21与定子10的外圆形成不均匀气隙,且每个磁钢21与定子10的外径的最大气隙长度与最小气隙长度的比值为3:2(即1.5:1),以提高气隙磁场的正弦性。As shown in Figure 8, preferably, the side facing the stator 10 of the magnet steel 21 is an arc surface, each magnet steel 21 forms an uneven air gap with the outer circle of the stator 10, and each magnet steel 21 and the outer circle of the stator 10 The ratio of the maximum air gap length to the minimum air gap length of the diameter is 3:2 (ie 1.5:1) to improve the sine of the air gap magnetic field.

磁钢21的侧边与磁钢21的底边(靠近转子支架的一边)之间的具有第一夹角a,该第一夹角a的取值范围为40°至80°。优选地,该第一夹角a的取值范围为65°至75°。例如,65°、70°或75°。此外,为了减小磁钢21中的涡流损耗,每块磁钢21在永磁阀电机的轴向上的长度不宜过大,具体尺寸可以根据设计需求来确定。There is a first included angle a between the side of the magnetic steel 21 and the bottom of the magnetic steel 21 (the side close to the rotor support), and the value range of the first included angle a is 40° to 80°. Preferably, the value range of the first included angle a is 65° to 75°. For example, 65°, 70°, or 75°. In addition, in order to reduce the eddy current loss in the magnet steel 21, the length of each magnet steel 21 in the axial direction of the permanent magnet valve motor should not be too large, and the specific size can be determined according to design requirements.

采用上述的定子10和转子20可以使永磁发电机容量增大的同时,降低永磁发电机定子制造和运输的成本;保证永磁发电机气隙磁场波形正弦性好,空载反电动势波形好,空载转矩脉动小;且基本上消除了定子绕组的第5次和第7次谐波磁动势,提高了定子绕组系数,降低了永磁发电机负载电流和负载转矩脉动值,削弱了永磁发电机振动和噪声的激励源。The use of the above-mentioned stator 10 and rotor 20 can increase the capacity of the permanent magnet generator while reducing the manufacturing and transportation costs of the permanent magnet generator stator; ensure that the waveform of the air gap magnetic field of the permanent magnet generator has good sine, and the no-load back electromotive force waveform Good, the no-load torque ripple is small; and basically eliminates the 5th and 7th harmonic magnetomotive force of the stator winding, improves the stator winding coefficient, and reduces the load current and load torque ripple value of the permanent magnet generator , which weakens the excitation source of permanent magnet generator vibration and noise.

此外,由于采用了集中绕组结构,大大简化了绕组线圈制造成本;定子的开口槽的设计实现永磁发电机的绕组线圈的整体下线工艺,降低了下线难度,提高了电机铁芯和绕组的整体可靠性。采用双Y移30°电角度的绕组连接方法,在不增加线圈主要尺寸和制造成本的基础上,提高了绕组利系数,且能够有效地削弱第5次和第7次绕组谐波磁动势,降低发电机负载电流和负载转矩脉动,提高发电机效率和可靠性,而且能够实现定子分瓣设计的目的。本发明的永磁发电机具有如下效果:In addition, due to the centralized winding structure, the manufacturing cost of the winding coil is greatly simplified; the design of the opening slot of the stator realizes the overall off-line process of the winding coil of the permanent magnet generator, which reduces the difficulty of off-line and improves the motor core and winding. overall reliability. Adopting the winding connection method of double Y-shifting 30° electrical angle, without increasing the main size of the coil and manufacturing cost, it improves the winding profit factor, and can effectively weaken the fifth and seventh winding harmonic magnetomotive force , reduce the load current and load torque ripple of the generator, improve the efficiency and reliability of the generator, and can realize the purpose of stator split design. Permanent magnet generator of the present invention has following effect:

永磁发电机定子采用分瓣设计,以降低定子制造和运输的成本。The permanent magnet generator stator adopts a split design to reduce the cost of stator manufacturing and transportation.

永磁发电机采用每极每相槽数q为2/5的设计原则,相数为双3相,定子槽采用开口槽设计,定子齿为平行齿;并采用集中绕组结构,定子绕组由两套电角度相差30°的绕组构成,定子两套绕组的连接方式均为Y连接,使得采用分瓣技术的大容量永磁发电机能够有效地削弱第5次和第7次谐波磁场,降低转矩脉动,同时降低线圈制造难度。此外还能够降低电机装配复杂度,提高可靠性。使得发电机制造工艺简单、可靠性更高。The permanent magnet generator adopts the design principle that the number of slots per pole and each phase q is 2/5, the number of phases is double 3 phases, the stator slots are designed with open slots, and the stator teeth are parallel teeth; and a concentrated winding structure is adopted, and the stator winding consists of two It is composed of windings with a difference of 30° in electric angle, and the connection mode of the two sets of windings of the stator is Y connection, so that the large-capacity permanent magnet generator using split technology can effectively weaken the 5th and 7th harmonic magnetic field, reduce Torque ripple, while reducing the difficulty of coil manufacturing. In addition, the motor assembly complexity can be reduced, and the reliability can be improved. The manufacturing process of the generator is simplified and the reliability is higher.

永磁发电机转子磁极采用斜极设计,斜极尺寸为1倍定子齿距,能够降低电机的齿槽转矩和负载脉动转矩。The rotor pole of the permanent magnet generator is designed with oblique poles, and the size of the oblique poles is 1 times the stator pitch, which can reduce the cogging torque and load ripple torque of the motor.

永磁发电机转子磁钢采用径向表贴式,磁钢与定子外径的最大气隙长度与最小气隙长度之比为1.5,能够使气隙磁场分布接近正弦性,并提高转子永磁体利用率,大大削弱齿槽转矩。The permanent magnet generator rotor magnet adopts radial surface mount type, and the ratio of the maximum air gap length to the minimum air gap length between the magnet steel and the outer diameter of the stator is 1.5, which can make the air gap magnetic field distribution close to sinusoidal and improve the rotor permanent magnet. Utilization, greatly weaken the cogging torque.

以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (20)

1. a motor stator, it is characterized in that, the MgO-ZrO_2 brick q of described motor stator is 2/5, and comprise the stator winding that two cover Y connect, difference 30 ° of electrical degrees between this two covers stator winding, described motor stator comprises at least one first stator modules (12) and at least one second stator modules (13) of independent processing.
2. motor stator according to claim 1, is characterized in that, the stator slot of described stator is open slot.
3. motor stator according to claim 1, is characterized in that, winding coil (11) pitch of the described stator winding of two covers is 1, and the equal turn numbers of each described winding coil (11).
4. motor stator according to claim 1, is characterized in that, described stator comprises at least one first stator modules (12) and at least one second stator modules (13) of alternate setting.
5. motor stator according to claim 4, it is characterized in that, described first stator modules (12) is 12, described second stator modules (13) is 12, then the number of teeth of described first stator modules (12) is 6, and the number of teeth of described second stator modules (13) is 6; Or
Described first stator modules (12) is 4, and described second stator modules (13) is 4, then the number of teeth of described first stator modules (12) is 18, and the number of teeth of described second stator modules (13) is 18; Or
Described first stator modules (12) is 24, and described second stator modules (13) is 24, then the number of teeth of described first stator modules (12) is 3, and the number of teeth of described second stator modules (13) is 3; Or
Described first stator modules (12) is 36, and described second stator modules (13) is 36, then the number of teeth of described first stator modules (12) is 2, and the number of teeth of described second stator modules (13) is 2; Or
Described first stator modules (12) is 72, and described second stator modules (13) is 72, then the number of teeth of described first stator modules (12) is 1, and the number of teeth of described second stator modules (13) is 1.
6. motor stator according to any one of claim 1 to 5, is characterized in that, described stator comprises multiple stator tooth, and described stator tooth is parallel teeth.
7. a permanent magnet generator, comprise stator (10) and rotor (20), it is characterized in that, described permanent magnet generator is two 3 phases, and the MgO-ZrO_2 brick q of described permanent magnet generator is 2/5, described stator (10) comprises two cover stator winding, and difference 30 ° of electrical degrees between two covers described stator winding, the described stator winding of two covers is Y and connects, and the described stator winding of two covers is double-deck concentratred winding.
8. permanent magnet generator according to claim 7, is characterized in that, the stator slot of described stator (10) is open slot.
9. permanent magnet generator according to claim 7, is characterized in that, described stator (10) comprises multiple stator tooth, and described stator tooth is parallel teeth.
10. permanent magnet generator according to claim 7, is characterized in that, winding coil (11) pitch of the described stator winding of two covers is 1, and the equal turn numbers of each described winding coil (11).
11. permanent magnet generatores according to claim 7, is characterized in that, described stator (10) comprises at least one first stator modules (12) and at least one second stator modules (13) of alternate setting.
12. permanent magnet generatores according to claim 11, it is characterized in that, described first stator modules (12) is 12, described second stator modules (13) is 12, then the number of teeth of described first stator modules (12) is 6, and the number of teeth of described second stator modules (13) is 6; Or
Described first stator modules (12) is 4, and described second stator modules (13) is 4, then the number of teeth of described first stator modules (12) is 18, and the number of teeth of described second stator modules (13) is 18; Or
Described first stator modules (12) is 24, and described second stator modules (13) is 24, then the number of teeth of described first stator modules (12) is 3, and the number of teeth of described second stator modules (13) is 3; Or
Described first stator modules (12) is 36, and described second stator modules (13) is 36, then the number of teeth of described first stator modules (12) is 2, and the number of teeth of described second stator modules (13) is 2; Or
Described first stator modules (12) is 72, and described second stator modules (13) is 72, then the number of teeth of described first stator modules (12) is 1, and the number of teeth of described second stator modules (13) is 1.
13. permanent magnet generatores according to claim 11, is characterized in that, six winding coils (11) on described first stator modules (12) are AX, xa, YB, by, CZ, zc by the lead-out wire of first end to the second end successively.
14. permanent magnet generatores according to claim 11 or 13, it is characterized in that, six winding coils (11) on described second stator modules (13) are XA, ax, BY, yb, ZC, cz by the lead-out wire of first end to the second end successively.
15. permanent magnet generatores according to claim 7, is characterized in that, described rotor (20) comprises radial surface-mount type magnet steel (21).
16. permanent magnet generatores according to claim 15, is characterized in that, maximum air gap length and the minimal air gap length ratio of the external diameter of described magnet steel (21) and described stator (10) are 3:2.
17. permanent magnet generatores according to claim 15, it is characterized in that, described rotor (20) magnetic pole is oblique pole, first end and second end of the first side of described magnet steel (21) have spacing Kt in the circumference of described rotor (20), described first end is along the axial first end of described rotor (20), and described second end is along the second axial end of described rotor (20).
18. permanent magnet generatores according to claim 17, is characterized in that, described spacing Kt is 1 times of stator tooth distance.
19. according to claim 15 to the permanent magnet generator according to any one of 18, it is characterized in that, have the first angle a between the side of described magnet steel (21) and the base of described magnet steel (21), the span of described first angle a is 40 ° to 80 °.
20. permanent magnet generatores according to claim 19, is characterized in that, the span of described first angle a is 65 ° to 75 °.
CN201510927661.3A 2015-12-14 2015-12-14 Motor stator and permanent magnet generator Pending CN105406629A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106451860A (en) * 2016-10-31 2017-02-22 北京金风科创风电设备有限公司 Monitoring device for permanent magnet pole of permanent magnet motor and press strip of permanent magnet pole
CN106849408A (en) * 2017-04-20 2017-06-13 郑州轻工业学院 A kind of stator structure of new weakening motor torque ripple
WO2017101637A1 (en) * 2015-12-14 2017-06-22 新疆金风科技股份有限公司 Motor stator, permanent magnet generator
CN109546764A (en) * 2018-11-05 2019-03-29 东南大学 A kind of unit-combination type can modularized motor
CN110337772A (en) * 2017-02-02 2019-10-15 西门子歌美飒可再生能源公司 segmented stator motor
CN111130234A (en) * 2018-10-30 2020-05-08 西门子歌美飒可再生能源公司 Electric machine with hybrid tooth design
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US11888348B2 (en) 2018-10-30 2024-01-30 Siemens Gamesa Renewable Energy A/S Electrical machine having a segmented stator or rotor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109962538A (en) * 2017-12-25 2019-07-02 安徽明腾永磁机电设备有限公司 A kind of generator
CN108512333B (en) * 2018-04-24 2024-09-06 金风科技股份有限公司 Modularized stator and wind generating set
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005333711A (en) * 2004-05-19 2005-12-02 Nsk Ltd Electric power steering device and method of manufacturing electric motor for electric power steering
CN201440621U (en) * 2009-05-08 2010-04-21 珠海格力电器股份有限公司 Motor stator core and motor
CN202374056U (en) * 2011-11-15 2012-08-08 信质电机股份有限公司 Novel stator core structure
CN104617689A (en) * 2015-01-30 2015-05-13 新疆金风科技股份有限公司 Wind driven generator, stator iron core of wind driven generator and iron core module of stator
CN205178690U (en) * 2015-12-14 2016-04-20 新疆金风科技股份有限公司 Motor stator , permanent magnet generator

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005051380A1 (en) * 2005-10-27 2007-05-03 Zf Friedrichshafen Ag Stator of an electric machine
CN202111540U (en) * 2011-06-14 2012-01-11 天津市津郊电机配件有限公司 Section-type stator core
CN103269137A (en) * 2013-05-28 2013-08-28 天津市松正电动汽车技术股份有限公司 Duplex-winding motor structure
CN105406629A (en) * 2015-12-14 2016-03-16 新疆金风科技股份有限公司 Motor stator and permanent magnet generator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005333711A (en) * 2004-05-19 2005-12-02 Nsk Ltd Electric power steering device and method of manufacturing electric motor for electric power steering
CN201440621U (en) * 2009-05-08 2010-04-21 珠海格力电器股份有限公司 Motor stator core and motor
CN202374056U (en) * 2011-11-15 2012-08-08 信质电机股份有限公司 Novel stator core structure
CN104617689A (en) * 2015-01-30 2015-05-13 新疆金风科技股份有限公司 Wind driven generator, stator iron core of wind driven generator and iron core module of stator
CN205178690U (en) * 2015-12-14 2016-04-20 新疆金风科技股份有限公司 Motor stator , permanent magnet generator

Cited By (12)

* Cited by examiner, † Cited by third party
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CN106451860A (en) * 2016-10-31 2017-02-22 北京金风科创风电设备有限公司 Monitoring device for permanent magnet pole of permanent magnet motor and press strip of permanent magnet pole
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US11196314B2 (en) 2017-02-02 2021-12-07 Siemens Gamesa Renewable Energy A/S Segmented stator electrical machine
CN106849408A (en) * 2017-04-20 2017-06-13 郑州轻工业学院 A kind of stator structure of new weakening motor torque ripple
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US11362550B2 (en) 2018-10-30 2022-06-14 Siemens Gamesa Renewable Energy A/S Electrical machine with hybrid tooth design
US11888348B2 (en) 2018-10-30 2024-01-30 Siemens Gamesa Renewable Energy A/S Electrical machine having a segmented stator or rotor
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Application publication date: 20160316