WO2023097818A1 - 无刷同步发电机结构及具有其的发电机 - Google Patents

无刷同步发电机结构及具有其的发电机 Download PDF

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Publication number
WO2023097818A1
WO2023097818A1 PCT/CN2021/140497 CN2021140497W WO2023097818A1 WO 2023097818 A1 WO2023097818 A1 WO 2023097818A1 CN 2021140497 W CN2021140497 W CN 2021140497W WO 2023097818 A1 WO2023097818 A1 WO 2023097818A1
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Prior art keywords
rotor
section
main shaft
winding
bearing
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PCT/CN2021/140497
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English (en)
French (fr)
Inventor
汤国斌
何涛
周维坚
缪杰
陶仙明
杨俊�
陈通红
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浙江水泵总厂有限公司
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Application filed by 浙江水泵总厂有限公司 filed Critical 浙江水泵总厂有限公司
Publication of WO2023097818A1 publication Critical patent/WO2023097818A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present application relates to a brushless synchronous generator, in particular to a structure of a brushless synchronous generator and a generator having the same.
  • the rotor winding and the excitation winding of the brushless synchronous motor need to be connected by wires.
  • most of them will install a pre-embedded sleeve between the rotor winding and the excitation winding on the main shaft.
  • the bearings of the main shaft are mostly set at the embedded sleeve, and the excitation winding is mostly set at the end of one side of the main shaft;
  • the present application first provides a brushless synchronous generator structure, including a main shaft, a rotor winding, an excitation winding, and a bearing; the rotor winding, the excitation winding, and the bearing are all fixed on the outer peripheral wall of the main shaft; the One end of the main shaft is a support section, and the excitation winding and the rotor winding are located between the support section and the bearing; the outer peripheral wall of the main shaft is radially provided with a line parallel to the central axis of the main shaft The slots, the rotor windings and the field windings all correspond to the wire slots.
  • the above brushless synchronous generator structure by changing the positional relationship between the bearing and the field winding, enables simultaneous correction of the dynamic balance of the field winding and the rotor winding without the need for additional dynamic balance correction steps, reducing the main shaft rotation process
  • the unbalance generated in the main shaft is beneficial to the normal operation of the main shaft; in addition, by opening a slot on the outer peripheral wall of the main shaft, the embedded sleeve and the main shaft are integrated, so that the position of the original embedded sleeve can be used, so there is no need to increase the main shaft.
  • the length can realize the change of the positional relationship between the bearing and the excitation winding, thus avoiding the increase of the production cost.
  • the main shaft can be sequentially divided into the support section, the rotor section, the excitation section and the bearing section, and the rotor windings, the excitation windings and the bearings are respectively fixed on the corresponding parts of the main shaft. Location.
  • Such arrangement enables the dynamic balance correction device to perform dynamic balance correction on the rotor winding and the field winding by supporting the support section and the bearing when performing dynamic balance correction.
  • the support section, the rotor section, the excitation section and the bearing section are all concentric cylinders, and their diameters are successively reduced to form three stepped surfaces; the rotor winding, the Both the excitation winding and the inner hole of the bearing are in transition fit with the above-mentioned main shaft at the fixed position.
  • Such arrangement enables the rotor winding, field winding and bearing to abut against the corresponding step surface when they are installed in place, thereby achieving a position-limiting effect, facilitating installation, and simplifying installation difficulty.
  • the rotor section can be divided into a rotor part and a first spacer part
  • the excitation section can be divided into an excitation part and a second spacer part
  • the rotor part and the excitation part are both located close to the side of the support section.
  • the rotor part and the first spacer, the excitation part and the second spacer are all concentric cylinders, and the diameter of the rotor part is larger than that of the first spacer, The diameter of the excitation part is larger than that of the second spacer to form two stepped surfaces; the lengths of the rotor part and the excitation part are equal to the lengths of the rotor winding and the excitation winding respectively.
  • the length of the first spacer is 62 mm, and the length of the second spacer is 39 mm.
  • the bearing section can be divided into a bearing section, an oil seal section, and a fan section in the order away from the support section, all of which are concentric cylinders, and their diameters decrease in sequence along the direction away from the support section , to form two stepped surfaces; the oil seal part is fixed with a waterproof oil seal, and the fan part is fixed with a fan.
  • Such setting can limit the installation of the waterproof oil seal and the fan, thereby facilitating the installation of the waterproof oil seal and the fan.
  • the structure of the brushless synchronous generator further includes a secondary shaft, the secondary shaft is detachably fixed to the main shaft, the secondary shaft is attached to the end surface on the side where the support section is located, and is connected to the The main shafts are concentric.
  • the end surface of the auxiliary shaft away from the main shaft is centered on the central axis of the auxiliary shaft, and connecting holes are evenly distributed in the circumferential direction for fixing the sensor of the dynamic balance correction device.
  • connection hole can be used to install the connection plate, so that the connection and assembly work between the generator and the driving device will be completed through the connection plate.
  • the second aspect of the present application provides a generator, which includes the brushless synchronous generator structure of any one of the above embodiments.
  • Fig. 1 is the schematic diagram of the half-section structure of the generator of the present application in the front view direction;
  • Fig. 2 is a schematic cross-sectional structural view of the main shaft in Fig. 1;
  • Fig. 3 is a schematic cross-sectional structural diagram of the front view direction after the main shaft and the auxiliary shaft are installed;
  • Fig. 4 is a right view structural diagram of the auxiliary shaft in Fig. 3 .
  • main components 10, main shaft; 11, support section; 12, rotor section; 121, rotor part; 122, first interval part; 13, excitation section; 131, excitation part; 132, second interval part; 14, Bearing section; 141, bearing part; 142, oil seal part; 143, fan part; 15, wire groove; 20, rotor winding; 30, excitation winding; 40, bearing; 50, auxiliary shaft; 51, connection hole; 60, fan ; 70, generator cover.
  • a component when referred to as being “mounted on” another component, it can be directly on the other component or intervening components can also be present.
  • a component When a component is said to be “set on” another component, it may be set directly on the other component or there may be an intervening component at the same time.
  • a component When a component is said to be “fixed” to another component, it may be directly fixed to the other component or there may be an intervening component at the same time.
  • a brushless synchronous generator structure please refer to FIG. 1 and FIG. 2, including a main shaft 10, a rotor winding 20, an excitation winding 30 and a bearing 40; the rotor winding 20, the excitation winding 30 and the bearing 40 are all fixed on the main shaft 10
  • the outer peripheral wall of the main shaft 10 is a supporting section 11 at the end of one side, and the field winding 30 and the rotor winding 20 are located between the supporting section 11 and the bearing 40;
  • the slots, the rotor winding 20 and the field winding 30 all correspond to the wire slot 15 .
  • the wire slots 15 can have the same effect as the embedded sleeve to facilitate wiring, so that the rotor winding 20 and the field winding 30
  • the connection line between them can be arranged in the wire slot 15, so that there is no need to additionally set the embedded sleeve between the rotor winding 20 and the field winding 30, that is, the integration between the embedded sleeve and the main shaft 10 makes the original embedded sleeve
  • the location can be utilized, and the field winding 30 can be arranged closer to the rotor winding 20;
  • the field winding 30 can be arranged closer to the rotor winding 20 than in the related art, when the length of the main shaft 10 remains unchanged, the original installation position of the field winding 30, that is, the end of the main shaft 10 away from the side of the support section 11 can be vacated , so the present application can set the bearing 40 at this position, and then realize that the field winding 30 and the rotor winding 20 are located between the support section 11 and the bearing 40;
  • the brushless synchronous generator structure of the present application can pass through the support section 11 when dynamic balance correction is performed.
  • the bearing 40 With the bearing 40, the dynamic balance correction of the main shaft 10 on which the field winding 30 and the rotor winding 20 are installed is completed, and the dynamic balance correction of the field winding 30 and the rotor winding 20 is completed only through one correction process;
  • this application changes the positional relationship between the bearing 40 and the field winding 30, so that the field winding 30 and the rotor can be adjusted without adding dynamic balance correction steps.
  • the simultaneous correction of the dynamic balance of the winding 20 reduces the unbalance generated during the rotation of the main shaft 10, which is beneficial to the normal operation of the main shaft 10;
  • the embedded sleeve and the main shaft 10 are integrated, so that the position of the original embedded sleeve can be utilized, so that the bearing 40 and the main shaft 10 can be realized without increasing the length of the main shaft 10.
  • the change of the positional relationship between the field windings 30 avoids the increase of the production cost.
  • the main shaft 10 can be sequentially divided into a support section 11, a rotor section 12, an excitation section 13, and a bearing section 14.
  • the rotor winding 20, the excitation winding 30, and the bearing 40 are respectively fixed on corresponding parts of the main shaft 10. position, the rotor winding 20 is fixed on the rotor section 12 of the main shaft 10, the field winding 30 is fixed on the field section 13 of the main shaft 10, and the bearing 40 is fixed on the bearing section 14 of the main shaft 10;
  • the bearing 40 and the supporting section 11 are respectively located on both sides of the rotor winding 20 and the field winding 30, so when dynamic balance correction is performed, the dynamic balance correction device can support the supporting section 11 and the bearing 40 to correct the rotor winding 20 and the field winding 30.
  • the winding 30 is dynamically balanced.
  • the support section 11, the rotor section 12, the excitation section 13 and the bearing section 14 are all concentric cylinders, and the diameters are successively reduced to form three stepped surfaces, that is, the diameter of the support section 11 is larger than that of the rotor
  • the diameter of section 12, the diameter of rotor section 12 is greater than the diameter of excitation section 13, the diameter of excitation section 13 is greater than the diameter of bearing section 14;
  • the inner holes of the rotor winding 20, the field winding 30, and the bearing 40 are transitionally matched with the main shaft 10 at its fixed position, that is, the diameters of the inner holes of the rotor winding 20, the field winding 30, and the bearing 40 are all equal to or slightly larger than the main shaft 10 at the corresponding position. diameter, but smaller than the diameter of the main shaft 10 at its corresponding position close to the side of the support section 11; taking the rotor winding 20 as an example, the diameter of the rotor winding 20 is equal to or slightly larger than the diameter of the rotor section 12, but smaller than the diameter of the support section 11, the excitation
  • the winding 30 is the same as the bearing 40;
  • the diameter of the main shaft 10 decreases sequentially according to the above order, when the rotor winding 20, the field winding 30 and the bearing 40 are installed on the main shaft 10, all along the extension direction of the main shaft 10, starting from the end with the smallest diameter (i.e. Bearing section 14) is installed to the other end (i.e. support section 11);
  • the rotor winding 20 As an example, during its installation, since the diameter of the supporting section 11 is larger than the inner diameter of the rotor winding 20, when the rotor winding 20 is installed to abut against the stepped surface between the rotor section 12 and the supporting section 11 , the rotor winding 20 cannot move further toward the support section 11, and the rotor winding 20 is installed in place at this time, so that the position-limiting effect of the installation of the rotor winding 20 is realized through the step surface between the rotor section 12 and the support section 11, which is convenient for the rotor
  • the installation of the winding 20, the excitation winding 30 is the same as the bearing 40;
  • the rotor section 12 can be divided into a rotor part 121 and a first spacer part 122, and the excitation section 13 can be divided into an excitation part 131 and a second spacer part 132.
  • the rotor part 121 and the field part 131 are both Located on the side close to the support section 11;
  • the rotor winding 20 and the field winding 30 are in contact with the stepped surfaces of the corresponding rotor section 12 and the field section 13 after the installation is completed, that is, the rotor winding 20 and the field winding 30 are both located on the corresponding rotor section 12 and the field section 13 is close to the support One side of section 11; therefore, after the installation is completed, the rotor winding 20 is fixed on the rotor part 121, and the field winding 30 is fixed on the field part 131;
  • the length of the first spacer 122 is 62 mm, and the length of the second spacer 132 is 39 mm.
  • the rotor winding 20 As an example, when the rotor winding 20 is installed to abut against the stepped surface between the rotor section 12 and the support section 11, since the length of the rotor winding 20 is equal to the length of the rotor part 121, the other part of the rotor winding 20 At this time, one end surface is in the same plane as the stepped surface between the first spacer 122 and the excitation part 131;
  • the operator can check whether the end surface of the rotor winding 20 away from the side of the support section 11 is on the same end surface as the step surface between the first spacer 122 and the excitation part 131, and observe the distance between the two. Whether it is installed in place and the remaining installation margin is visually judged to further reduce the difficulty of installation; the excitation winding 30 is the same.
  • the bearing section 14 can be divided into a bearing section 141, an oil seal section 142, and a fan section 143 along the order away from the support section 11.
  • the direction decreases in order to form two stepped surfaces; the oil seal part 142 is fixed with a waterproof oil seal, and the fan part 143 is fixed with a fan 60;
  • the dynamic balance correction can be carried out.
  • the generator end cover 70, waterproof oil seal and fan 60 are all installed after the calibration is completed, because the waterproof oil seal
  • the volume itself is small, and the fan 60 is mostly made of plastic or other materials with low density.
  • the weight of the two is negligible relative to the weight of the field winding 30 and the rotor winding 20.
  • the three step surfaces between the excitation section 13, the rotor section 12 and the support section 11 above can limit the installation of the bearing 40, the excitation winding 30 and the rotor winding 20; the bearing part 141, the oil seal part 142 and the fan
  • the two stepped surfaces between the parts 143 can limit the installation of the waterproof oil seal and the fan 60 , thereby facilitating the installation of the waterproof oil seal and the fan 60 .
  • the structure of the brushless synchronous generator further includes a secondary shaft 50, which is detachably fixed to the main shaft 10, and the secondary shaft 50 is attached to the end surface of the side where the support section 11 is located, and is connected to the
  • the main shaft 10 is concentric; in the subsequent assembly process, the auxiliary shaft 50 and the driving device can be fixedly connected first, and then the main shaft 10 and the auxiliary shaft 50 can be fixedly connected to reduce the operational difficulty of directly assembling the generator and the driving device.
  • the end surface of the auxiliary shaft 50 away from the main shaft 10 is centered on the central axis of the auxiliary shaft 50 and has connecting holes 51 evenly distributed in the circumferential direction for fixing the sensor of the dynamic balance correction device.
  • the second aspect of the present application provides a generator, which includes the above brushless synchronous generator structure.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

一种无刷同步发电机结构及具有其的发电机。该结构包括主轴(10)、转子绕组(20)、励磁绕组(30)以及轴承(40)；转子绕组(20)、励磁绕组(30)以及轴承(40)均固设于主轴(10)的外周壁；主轴(10)的一侧末端为支撑段(11)，励磁绕组(30)以及转子绕组(20)位于支撑段(11)与轴承(40)之间；主轴(10)的外周壁径向开设有与主轴(10)的中轴线平行的线槽(15)，转子绕组(20)以及励磁绕组(30)均与线槽(15)对应。

Description

无刷同步发电机结构及具有其的发电机
相关申请
本申请要求2021年11月30日申请的，申请号为202111443101.2，发明名称为“无刷同步发电机结构及具有其的发电机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无刷同步发电机相关，特别是涉及一种无刷同步发电机结构及具有其的发电机。
背景技术
发电机的转子在转动时产生的不平衡量会引起转子的横向振动，并使转子受到不必要的动载荷，不利于转子正常运转，因此，在发电机装配前，需要进行转子动平衡校正；
无刷同步电机的转子绕组与励磁绕组之间需要通过电线连接，目前为了便于走线，大多会在主轴上设置一个位于转子绕组与励磁绕组之间的预埋套，而为了缩短发电机总长度，减少生产成本，主轴的轴承大多设置于预埋套处，且励磁绕组大多设置于主轴其中一侧的末端；
由于动平衡校正时需要对主轴的两端支撑，在励磁绕组安装完成后，由于其占据了主轴其中一侧的末端，会导致无法进行动平衡校正；因此，对于上述结构的无刷同步电机，目前大多在转子绕组安装完成后进行动平衡校正，校正完成后励磁绕组的安装，以及后续装配工作；
相当于未对励磁绕组进行动平衡校正，虽然励磁绕组的质量通常相对转子绕组较小，产生的横向振动量相对较小，但仍旧不利于发电机的正常运转。
发明内容
基于此，有必要针对上述无刷同步电机结构难以在不增加主轴长度的情况下实现对励磁绕组的动平衡调焦的问题，提供一种无需增加主轴长度，即可实现励磁绕组与转子绕组的动平衡校正的无刷同步发电机结构及具有其的发电机。
本申请首先提供一种无刷同步发电机结构，包括主轴、转子绕组、励磁绕组以及轴承； 所述转子绕组、所述励磁绕组以及所述轴承均固设于所述主轴的外周壁；所述主轴的一侧末端为支撑段，所述励磁绕组以及所述转子绕组位于所述支撑段与所述轴承之间；所述主轴的外周壁径向开设有与所述主轴的中轴线平行的线槽，所述转子绕组以及所述励磁绕组均与所述线槽对应。
上述无刷同步发电机结构，通过改变轴承与励磁绕组的位置关系，使得在无需增加动平衡校正步骤的前提下，完成了对励磁绕组与转子绕组的动平衡的同时校正，减少了主轴转动过程中产生的不平衡量，有利于主轴正常运转；此外，通过在主轴外周壁开设线槽，将预埋套与主轴整合为一体，以使得原预埋套的位置能够得到利用，因此无需增加主轴的长度，即可实现轴承与励磁绕组之间位置关系的改变，进而避免了生产成本的增加。
在其中一个实施例中，所述主轴可依次分为所述支撑段、转子段、励磁段以及轴承段，所述转子绕组、所述励磁绕组以及所述轴承分别固设于所述主轴的对应位置。
如此设置，使得在进行动平衡校正时，动平衡校正装置能够通过承托支撑段以及轴承，对转子绕组以及励磁绕组进行动平衡校正。
在其中一个实施例中，所述支撑段、所述转子段、所述励磁段以及所述轴承段均为同心圆柱，且直径依次减少，以形成三个台阶面；所述转子绕组、所述励磁绕组以及所述轴承的内孔均与其固设位置的上述主轴过渡配合。
如此设置，使得转子绕组、励磁绕组以及轴承在安装到位时，能够与对应的台阶面抵接，从而达到限位效果，便于安装，简化了安装难度。
在其中一个实施例中，所述转子段可分为转子部和第一间隔部，所述励磁段可分为励磁部和第二间隔部，所述转子部与所述励磁部均位于靠近所述支撑段的一侧。
如此设置，以使得转子绕组、励磁绕组以及轴承之间互相存在间隔，达到满足三者的设计要求的效果。
在其中一个实施例中，所述转子部和所述第一间隔部、所述励磁部和所述第二间隔部均为同心圆柱，且所述转子部的直径大于所述第一间隔部，所述励磁部的直径大于所述第二间隔部，以形成两个台阶面；所述转子部及所述励磁部的长度分别与所述转子绕组及所述励磁绕组的长度相等。
如此设置，以使得操作者能够通过观察转子绕组远离支撑段的一侧端面，与第一间隔部及励磁部之间的台阶面之间的相对位置关系，从而对转子绕组是否安装到位以及剩余安装余量等情况进行判断，进一步降低安装难度。
在其中一个实施例中，所述第一间隔部的长度为62mm，所述第二间隔部的长度为39mm。
在其中一个实施例中，所述轴承段沿远离所述支撑段的顺序可分为轴承部、油封部以及风扇部，三者均为同心圆柱，且直径沿远离所述支撑段的方向依次减少，以形成两个台阶面；所述油封部固设有防水油封，所述风扇部固设有风扇。
如此设置，能够对防水油封以及风扇的安装起到限位效果，从而便于防水油封以及风扇的安装。
在其中一个实施例中，无刷同步发电机结构还包括副轴，所述副轴可拆卸的固设于所述主轴，所述副轴与所述支撑段所在侧的端面贴合，且与所述主轴同心。
在其中一个实施例中，所述副轴远离所述主轴侧的端面以所述副轴的中轴线为中心，周向均布开设有连接孔，用以固设动平衡校正装置的传感器。
如此设置，以使得动平衡校正结束后，连接孔能够用于安装连接板，以便于后续通过连接板将完成发电机与驱动装置之间的连接装配工作。
本申请第二方面提供一种发电机，该发电机包括上述任一实施例的无刷同步发电机结构。
附图说明
图1为本申请的发电机正视方向的半剖结构示意图；
图2为图1中主轴正视方向的剖视结构示意图；
图3为主轴与副轴安装后正视方向的剖视结构示意图；
图4为图3中副轴的右视结构示意图。
主要元件符号说明：10、主轴；11、支撑段；12、转子段；121、转子部；122、第一间隔部；13、励磁段；131、励磁部；132、第二间隔部；14、轴承段；141、轴承部；142、油封部；143、风扇部；15、线槽；20、转子绕组；30、励磁绕组；40、轴承；50、副轴；51、连接孔；60、风扇；70、发电机端盖。
以上主要元件符号说明结合附图及具体实施方式对本申请作进一步详细的说明。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，当组件被称为“安装于”另一个组件，它可以直接在另一个组件上或者 也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。当一个组件被认为是“固定于”另一个组件，它可以是直接固定在另一个组件上或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
一种无刷同步发电机结构，请参考图1和图2所示，包括主轴10、转子绕组20、励磁绕组30以及轴承40；转子绕组20、励磁绕组30以及轴承40均固设于主轴10的外周壁；主轴10的一侧末端为支撑段11，励磁绕组30以及转子绕组20位于支撑段11与轴承40之间；主轴10的外周壁径向开设有与主轴10的中轴线平行的线槽，转子绕组20以及励磁绕组30均与线槽15对应。
通过在主轴10的外周壁径向开设与转子绕组20以及励磁绕组30对应的线槽15，线槽15能够起到与预埋套相同的便于走线的效果，使得转子绕组20与励磁绕组30之间的连线能够布置于线槽15，从而不需要在转子绕组20与励磁绕组30之间额外设置预埋套，即对预埋套与主轴10之间进行整合，使得原预埋套的位置能够得到利用，励磁绕组30能够更加靠近转子绕组20设置；
由于励磁绕组30相较于相关技术能够更接近转子绕组20进行设置，因此在主轴10长度不变的情况下，励磁绕组30的原设置位置，即主轴10远离支撑段11侧的一端得以空出，故本申请能够将轴承40设置于该位置，进而实现励磁绕组30以及转子绕组20位于支撑段11与轴承40之间；
而通过将励磁绕组30以及转子绕组20设置于支撑段11与轴承40之间，使得本申请的无刷同步发电机结构，在进行动平衡校正时，动平衡校正装置能够通过承托支撑段11与轴承40，对安装有励磁绕组30以及转子绕组20的主轴10进行动平衡校正，仅通过一次校正过程即完成了励磁绕组30与转子绕组20的动平衡校正；
相较于相关技术中仅对转子绕组20进行动平衡校正，本申请通过改变轴承40与励磁绕组30的位置关系，使得在无需增加动平衡校正步骤的前提下，完成了对励磁绕组30与转子绕组20的动平衡的同时校正，减少了主轴10转动过程中产生的不平衡量，有利于主轴10正常运转；
此外，通过在主轴10外周壁开设线槽15，将预埋套与主轴10整合为一体，以使得原预埋套的位置能够得到利用，因此无需增加主轴10的长度，即可实现轴承40与励磁绕组 30之间位置关系的改变，进而避免了生产成本的增加。
在图2所示的实施例中，主轴10可依次分为支撑段11、转子段12、励磁段13以及轴承段14，转子绕组20、励磁绕组30以及轴承40分别固设于主轴10的对应位置，转子绕组20固设于主轴10的转子段12，励磁绕组30固设于主轴10的励磁段13，轴承40固设于主轴10的轴承段14；
从而使得轴承40和支撑段11分别位于转子绕组20以及励磁绕组30的两侧，因此在进行动平衡校正时，动平衡校正装置能够通过承托支撑段11以及轴承40，对转子绕组20以及励磁绕组30进行动平衡校正。
在图2所示的实施例中，支撑段11、转子段12、励磁段13以及轴承段14均为同心圆柱，且直径依次减少，以形成三个台阶面，即支撑段11的直径大于转子段12的直径，转子段12的直径大于励磁段13的直径，励磁段13的直径大于轴承段14的直径；
转子绕组20、励磁绕组30以及轴承40的内孔均与其固设位置的主轴10过渡配合，即转子绕组20、励磁绕组30以及轴承40的内孔直径均等于或稍大于其对应位置的主轴10的直径，但小于其对应位置靠近支撑段11侧的主轴10的直径；以转子绕组20为例，转子绕组20的直径等于或稍大于转子段12的直径，但小于支撑段11的直径，励磁绕组30与轴承40同理；
此外，由于主轴10的直径依照上述顺序依次减小，因此，在将转子绕组20、励磁绕组30以及轴承40安装至主轴10上时，均沿主轴10的延伸方向，从直径最小的一端(即轴承段14)向另一端(即支撑段11)进行安装；
以转子绕组20为例，在其安装过程中，由于支撑段11的直径大于转子绕组20的内径，因此，当转子绕组20安装至与转子段12及支撑段11之间的台阶面抵接时，转子绕组20无法进一步向支撑段11方向移动，此时转子绕组20安装到位，从而通过转子段12及支撑段11之间的台阶面，实现对转子绕组20安装时的限位效果，便于转子绕组20的安装，励磁绕组30与轴承40同理；
通过主轴10上三个台阶面的设计，使得转子绕组20、励磁绕组30以及轴承40安装至与主轴10的台阶面抵接时，即为安装到位，简化了安装难度，增加了安装效率，减少了装配成本。
在图2所示的实施例中，转子段12可分为转子部121和第一间隔部122，励磁段13可分为励磁部131和第二间隔部132，转子部121与励磁部131均位于靠近支撑段11的一侧；
由于转子绕组20与励磁绕组30在安装完成后，与对应的转子段12及励磁段13的台 阶面抵接，即转子绕组20与励磁绕组30均位于对应的转子段12以及励磁段13靠近支撑段11的一侧；因此，在安装完成后，转子绕组20固设于转子部121，励磁绕组30固设于励磁部131；
以使得转子绕组20与励磁绕组30之间间隔有第一间隔部122，而励磁绕组30与轴承40之间间隔有第二间隔部132，从而使得转子绕组20、励磁绕组30以及轴承40之间互相存在间隔，以满足三者的设计要求。
可选的，第一间隔部122的长度为62mm，第二间隔部132的长度为39mm。
在图2所示的实施例中，转子部121和第一间隔部122、励磁部131和第二间隔部132均为同心圆柱，且转子部121的直径大于第一间隔部122，励磁部131的直径大于第二间隔部132，以形成两个台阶面；转子部121及励磁部131的长度分别与转子绕组20及励磁绕组30的长度相等；
以转子绕组20为例，当转子绕组20安装至与转子段12及支撑段11之间的台阶面抵接时，由于转子绕组20的长度与转子部121的长度相等，因此转子绕组20的另一侧端面此时与第一间隔部122及励磁部131之间的台阶面处于同一平面；
即操作者能够通过观察转子绕组20远离支撑段11的一侧端面，与第一间隔部122及励磁部131之间的台阶面是否处于同一端面，以及观察两者间的距离，对转子绕组20是否安装到位以及剩余安装余量等情况进行直观判断，进一步降低安装难度；励磁绕组30同理。
在图2所示的实施例中，轴承段14沿远离支撑段11的顺序可分为轴承部141、油封部142以及风扇部143，三者均为同心圆柱，且直径沿远离支撑段11的方向依次减少，以形成两个台阶面；油封部142固设有防水油封，风扇部143固设有风扇60；
在装配过程中，将轴承40、励磁绕组30以及转子绕组20安装至主轴10后即可进行动平衡校正，发电机端盖70、防水油封以及风扇60均在校正完成后进行安装，由于防水油封本身体积较小，而风扇60多采用塑料或其他密度较小的材料，两者的重量相对于励磁绕组30以及转子绕组20的重量可以忽略，在动平衡校正后进行安装不会影响主轴10的平衡量；而发电机端盖70仅起到支撑主轴10的作用，不会随主轴10一同转动，同样不会影响主轴10的平衡量。
同上文中励磁段13、转子段12以及支撑段11之间的三个台阶面，能够对轴承40、励磁绕组30以及转子绕组20的安装起到限位效果；轴承部141、油封部142以及风扇部143之间的两个台阶面，能够对防水油封以及风扇60的安装起到限位效果，从而便于防水油封以及风扇60的安装。
在图3所示的实施例中，无刷同步发电机结构还包括副轴50，副轴50可拆卸的固设于主轴10，副轴50与支撑段11所在侧的端面贴合，且与主轴10同心；在后续的装配过程中，可以采取先将副轴50与驱动装置固定连接，再将主轴10与副轴50固定连接的方式，减少发电机直接与驱动装置装配的操作难度。
在图3所示的实施例中，副轴50远离主轴10侧的端面以副轴50的中轴线为中心，周向均布开设有连接孔51，用以固设动平衡校正装置的传感器。在图4所示的实施例中，连接孔51开设有六个，在动平衡校正结束后，将动平衡校正装置的传感器拆下，连接孔51能够用于安装连接板，以便于后续通过连接板将完成发电机与驱动装置之间的连接装配工作。
本申请第二方面提供一种发电机，该发电机包括上述的无刷同步发电机结构。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种无刷同步发电机结构，其特征在于，包括主轴、转子绕组、励磁绕组以及轴承；
    所述转子绕组、所述励磁绕组以及所述轴承均固设于所述主轴的外周壁；
    所述主轴的一侧末端为支撑段，所述励磁绕组以及所述转子绕组位于所述支撑段与所述轴承之间；
    所述主轴的外周壁径向开设有与所述主轴的中轴线平行的线槽，所述转子绕组以及所述励磁绕组均与所述线槽对应。
  2. 根据权利要求1所述的无刷同步发电机结构，其特征在于，所述主轴可依次分为所述支撑段、转子段、励磁段以及轴承段，所述转子绕组、所述励磁绕组以及所述轴承分别固设于所述主轴的对应位置。
  3. 根据权利要求2所述的无刷同步发电机结构，其特征在于，所述支撑段、所述转子段、所述励磁段以及所述轴承段均为同心圆柱，且直径依次减少，以形成三个台阶面；所述转子绕组、所述励磁绕组以及所述轴承的内孔均与其固设位置的上述主轴过渡配合。
  4. 根据权利要求3所述的无刷同步发电机结构，其特征在于，所述转子段可分为转子部和第一间隔部，所述励磁段可分为励磁部和第二间隔部，所述转子部与所述励磁部均位于靠近所述支撑段的一侧。
  5. 根据权利要求4所述的无刷同步发电机结构，其特征在于，所述转子部和所述第一间隔部、所述励磁部和所述第二间隔部均为同心圆柱，且所述转子部的直径大于所述第一间隔部，所述励磁部的直径大于所述第二间隔部，以形成两个台阶面；所述转子部及所述励磁部的长度分别与所述转子绕组及所述励磁绕组的长度相等。
  6. 根据权利要求4所述的无刷同步发电机结构，其特征在于，所述第一间隔部的长度为62mm，所述第二间隔部的长度为39mm。
  7. 根据权利要求2所述的无刷同步发电机结构，其特征在于，所述轴承段沿远离所述支撑段的顺序可分为轴承部、油封部以及风扇部，三者均为同心圆柱，且直径沿远离所述支撑段的方向依次减少，以形成两个台阶面；所述油封部固设有防水油封，所述风扇部固设有风扇。
  8. 根据权利要求1所述的无刷同步发电机结构，其特征在于，无刷同步发电机结构还包括副轴，所述副轴可拆卸的固设于所述主轴，所述副轴与所述支撑段所在侧的端面贴合，且与所述主轴同心。
  9. 根据权利要求8所述的无刷同步发电机结构，其特征在于，所述副轴远离所述主轴 侧的端面以所述副轴的中轴线为中心，周向均布开设有连接孔，用以固设动平衡校正装置的传感器。
  10. 一种发电机，其特征在于，包括如权利要求1～9中任意一项所述的无刷同步发电机结构。
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