阅读说明：本技术 一种沿长轴大面离散分布多极对绕组的电机 (Motor with multi-pole pair windings distributed discretely along large surface of long shaft ) 是由 尹海斌 张夫刚 张罕 徐博 于 2020-12-16 设计创作，主要内容包括：本发明涉及电机技术领域,具体是一种沿长轴大面离散分布多极对绕组的电机,在结构形式上可分为沿长轴离散分布多极对绕组的旋转电机和沿大面离散分布多极对绕组的直线电机；沿长轴离散分布多极对绕组的旋转电机由n个单元旋转模块连接组成,沿大面离散分布多极对绕组的直线电机由n个单元动子模块连接组成；各所述单元模块输出的转矩或推力相同；所述转子结构或定子结构上的绕组为多极对绕组,全部单元模块的多极对绕组串联连接；有益效果是：各单元模块能够产生相同的转矩或推力,实现了各单元模块的绝对同步,电机只需一个驱动器驱动,且单元模块数量可任意扩展,有利于提高扩展性、降低成本；本发明适用于交流永磁同步电机、直流无刷电机和交流异步电机。(The invention relates to the technical field of motors, in particular to a motor with a large-area discrete distribution of multi-pole pair windings along a long shaft, which can be divided into a rotating motor with the multi-pole pair windings along the long shaft and a linear motor with the multi-pole pair windings along the large surface in structural form; the linear motor discretely distributed with the multi-pole pair windings along the large surface is formed by connecting n unit rotor modules; the torque or thrust output by each unit module is the same; the windings on the rotor structure or the stator structure are multi-pole paired windings, and the multi-pole paired windings of all the unit modules are connected in series; the beneficial effects are that: the unit modules can generate the same torque or thrust, absolute synchronization of the unit modules is realized, the motor only needs to be driven by one driver, and the number of the unit modules can be expanded at will, so that the expansibility is improved and the cost is reduced; the invention is suitable for alternating current permanent magnet synchronous motors, direct current brushless motors and alternating current asynchronous motors.)

1. A motor with multi-pole pair windings distributed discretely along the large surface of a long shaft is characterized in that the motor can be divided into a rotating motor with multi-pole pair windings distributed discretely along the long shaft and a linear motor with multi-pole pair windings distributed discretely along the large surface in structural form.

2. The electrical machine according to claim 1, wherein the electrical machine comprises n number of unit rotating modules connected together, each unit rotating module comprising a unit rotating module stator structure comprising a pole pair winding and a corresponding rotor structure; a bearing (2-1-4) is adopted for supporting between the rotor structure and the stator structure; the connection between the n unit rotating modules is divided into stator winding connection and rotor connection, the stator winding is in electrical connection, and the rotors are in rigid connection through a coupler (6) and a connecting shaft (7).

3. The rotating electric machine according to claim 2, wherein the unit rotating modules are divided into a permanent magnet rotor structure and a metal conductor rotor structure, the permanent magnet rotor structure is a permanent magnet synchronous rotating electric machine in which the multi-pole pair windings are discretely distributed along the long axis, and the metal conductor rotor structure is an alternating current asynchronous rotating electric machine in which the multi-pole pair windings are discretely distributed along the long axis.

4. The electrical machine according to claim 1, wherein said linear electrical machine comprises n elementary mover modules topologically spread by a rotary electrical machine; the rotor structure and the stator structure of the linear motor with the multi-pole pair windings distributed discretely along the large surface are connected through a sliding block (2-2-8), and the sliding block (2-2-8) makes linear motion on the guide rail (2-2-2); the connection among the n unit rotor modules is divided into rotor winding connection and rotor connection, the connection mode of the rotor windings is electrical connection, and the rotor connection is rigidly connected through a connecting plate (2-2-1).

5. The linear motor according to claim 4, wherein the rotor windings of the linear motor are distributed along the large surface in a transverse direction, so as to obtain the linear motor with the multi-pole-pair windings distributed along the large surface in a transverse direction, and the rotor windings are distributed along the large surface in a longitudinal direction, so as to obtain the linear motor with the multi-pole-pair windings distributed along the large surface in a longitudinal direction.

6. The linear motor with the multi-pole pair windings discretely distributed along the large surface as claimed in claim 4, wherein when the stator is a permanent magnet, the linear motor can be made into a moving winding type permanent magnet synchronous linear motor, and when the stator is a metal conductor, the linear motor can be made into a moving winding type alternating current asynchronous linear motor; conversely, when the rotor is a permanent magnet, the stator winding type permanent magnet synchronous linear motor can be manufactured; when the mover is a metal conductor, the stator winding type alternating current asynchronous linear motor can be manufactured.

7. The motor of claim 1, wherein the coils of the winding pairs of the motor are connected in star or delta configuration and the coils of the winding pairs are connected in series.

Technical Field

The invention relates to the technical field of motors, in particular to a motor with a plurality of pole pair windings distributed discretely along the large surface of a long shaft.

Background

In order to improve the processing range and the production efficiency, the size of electromechanical devices is increasing. In order to effectively drive large electromechanical equipment, multipoint bit synchronous driving is often required for the equipment structure. At present, the multipoint bit synchronous driving method for the large-scale structure mainly comprises two methods of mechanical synchronization and electrical synchronization.

The mechanical synchronization means that a motor drives a long shaft in a centralized way, and then the large-size workbench is driven synchronously at different point positions of the long shaft through mechanical transmission, the mode is simple and easy to implement, but the problem of asynchronous multipoint driving caused by deformation of the long shaft and the problem of mechanical vibration caused by unbalanced rotation exist. The electric synchronization means that a plurality of motors are used for synchronous control to realize multi-point position driving of a large-size workbench, and the method has good synchronization precision, but has the problems of high control difficulty, poor expansibility of a controller interface and high cost.

Disclosure of Invention

The invention aims to provide a motor with a large-surface discrete distribution of multi-pole pair windings along a long shaft, so as to solve the problems of synchronous errors or high cost due to more interfaces in multipoint synchronous driving of large electromechanical equipment proposed in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a motor with multi-pole pair windings distributed discretely along the large surface of a long shaft can be divided into a rotating motor with multi-pole pair windings distributed discretely along the long shaft and a linear motor with multi-pole pair windings distributed discretely along the large surface in structural form;

the rotating motor discretely distributed with the multi-pole pair windings along the long axis is formed by connecting n unit rotating modules, and each unit rotating module is formed by a stator structure formed by the pole pair windings and a corresponding rotor structure; a bearing is adopted between the rotor structure and the stator structure for supporting; the connection among the n unit rotating modules is divided into stator winding connection and rotor connection, the wiring mode of the stator winding is electrical connection, and the rotors are rigidly connected through a coupling and a connecting shaft;

the linear motor with the multi-pole pair windings distributed along the large surface in a discrete mode comprises n unit rotor modules which are unfolded by a rotary motor topology; the linear motor comprises a rotor structure and a stator structure which are connected through a sliding block, and the sliding block makes linear motion on a guide rail; the connection among the n unit rotor modules is divided into rotor winding connection and rotor connection, the connection mode of the rotor windings is electrical connection, and the rotor connection is rigidly connected through a connecting plate.

As a further scheme of the invention: the unit rotating module can be divided into a permanent magnet rotor structure and a metal conductor rotor structure, the permanent magnet rotor structure is a permanent magnet synchronous rotating motor with multi-pole-pair windings distributed discretely along a long shaft, and the metal conductor rotor structure is an alternating current asynchronous rotating motor with the multi-pole-pair windings distributed discretely along the long shaft.

As a still further scheme of the invention: the rotor windings are transversely distributed along the large surface to obtain the linear motor with the multi-pole-pair windings transversely and discretely distributed along the large surface, and the rotor windings are longitudinally distributed along the large surface to obtain the linear motor with the multi-pole-pair windings longitudinally and discretely distributed along the large surface.

As a still further scheme of the invention: when the stator is a permanent magnet, the stator can be made into a movable winding type permanent magnet synchronous linear motor, and when the stator is a metal conductor, the stator can be made into a movable winding type alternating current asynchronous linear motor; conversely, when the rotor of the rotor structure is a permanent magnet, the rotor can be made into a fixed winding type permanent magnet synchronous linear motor; when the mover is a metal conductor, the stator winding type alternating current asynchronous linear motor can be manufactured.

As a still further scheme of the invention: the pole pair winding coils of the motor with the multi-pole pair windings distributed discretely along the large surface of the long shaft adopt a star-shaped or triangular connection mode, and the pole pair winding coils adopt a series power supply mode.

Compared with the prior art, the invention has the beneficial effects that: the unit modules can generate the same torque or thrust, absolute synchronization of the unit modules is realized, the motor only needs to be driven by one driver, and the number of the unit modules can be expanded at will, so that the expansibility is improved and the cost is reduced; the invention is suitable for alternating current permanent magnet synchronous motors, direct current brushless motors and alternating current asynchronous motors.

Drawings

Fig. 1 is a schematic structural view of a rotating electric machine in which a plurality of pole pair windings are discretely distributed along a long axis according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a rotating electric machine unit module under any pole pair in the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a linear motor with windings of multiple pole pairs discretely distributed along a large-area transverse direction in the embodiment of the invention.

Fig. 4 is a schematic structural diagram of a linear motor with windings of multiple pole pairs discretely distributed along a large-surface longitudinal direction in the embodiment of the invention.

Fig. 5 is a schematic diagram of a motor driving with a multi-pole pair winding discretely distributed along a long axis large surface in an embodiment of the invention.

FIG. 6 is a schematic diagram of the wiring and the principle of the rotating electric machine in the embodiment of the present invention; wherein, a and b are wiring diagrams, and c is a schematic principle diagram.

In the drawings, 1: a driver; 2: the motor is provided with a plurality of pole pair windings which are distributed along the large surface of the long shaft in a discrete mode; 3: a first unit module; 4: a second unit module; 5: an nth unit module; 6: a coupling; 7: a connecting shaft; 2-1-1: a rotor; 2-1-2: an end cap; 2-1-3: a lead slot; 2-1-4: a bearing; 2-1-5: a stator; 2-1-6: a permanent magnet; 2-1-7: a tooth socket; 2-2-1: a connecting plate; 2-2-2: a guide rail; 2-2-3: a secondary yoke; 2-2-4: a secondary permanent magnet; 2-2-5: a base; 2-2-6: a mover; 2-2-7: an animal seat; 2-2-8: a slider; 2-2-9: and (4) an inner hexagon bolt.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Referring to fig. 1 to 5, in an embodiment of the present invention, a motor 2 with a plurality of pole pair windings discretely distributed along a long axis may be divided into a rotating motor with a plurality of pole pair windings discretely distributed along a long axis and a linear motor with a plurality of pole pair windings discretely distributed along a long axis. The rotating motor with the multi-pole pair windings discretely distributed along the long axis is rigidly connected by n unit rotating modules. The linear motor with the multi-pole pair windings distributed along the large surface in a discrete mode is unfolded through the topology of the rotating units, and meanwhile the n unit rotor modules are connected in a rigid mode. For the linear motor with the multi-pole pair windings distributed discretely along the large surface, when the rotor windings are distributed discretely along the large surface in the transverse direction, the linear motor with the multi-pole pair windings distributed discretely along the large surface in the transverse direction is obtained, and when the rotor windings are distributed discretely along the large surface in the longitudinal direction, the linear motor with the multi-pole pair windings distributed discretely along the large surface in the longitudinal direction is obtained. The windings on the rotor structure or the stator structure are multi-pole pair windings, and the multi-pole pair windings of each unit module are connected in series and driven by a driver 1; therefore, the torque or thrust output by each unit module is the same.

The number of the unit rotating modules is n, the number of the unit rotating modules is respectively a first unit module 3, a second unit module 4 and an nth unit module 5, and n is a constant. The rotating motor with the multi-pole pair windings discretely distributed along the long shaft is characterized in that each unit rotating module is rigidly connected through a coupling 6 and a connecting shaft 7. The linear motor with the multi-pole pair windings distributed discretely along the large surface is characterized in that all unit rotor modules are rigidly connected through a connecting plate 2-2-1.

As shown in fig. 1-2, the rotor structure is mounted to the stator structure by bearings 2-1-4. The rotor structure of the unit module comprises a rotor 2-1-1 and permanent magnets 2-1-6 arranged on the rotor, the stator structure comprises a stator 2-1-5 and end covers 2-1-2 arranged at two ends of the stator, the multi-pole pair windings are arranged on the stator and combined to form a rotating motor with the multi-pole pair windings distributed discretely along a long axis, and the structure of the plurality of unit rotating modules is the same; further, the permanent magnets 2-1-6 are adhered to the rotor 2-1-1, and the magnetizing directions of the upper permanent magnet and the lower permanent magnet are opposite; both ends of the rotor 2-1-1 are supported by bearings 2-1-4. The stator 2-1-5 winding is wound on a tooth slot 2-1-7 arranged on the stator 2-1-5. End caps 2-1-2 are positioned at both ends of the stator 2-1-5 while limiting axial displacement of the bearing 2-1-4. An air gap exists between the stator 2-1-5 and the permanent magnet 2-1-6; the U phase, the V phase and the W phase of the stator three-phase winding are led out through lead slots 2-1-3; the coupling 6 connects the rotor 2-1-1 with the connecting shaft 7. Since the multi-pole pair winding is in a serial form, each unit rotating module can generate the same torque. The unit rotating modules are distributed along the axial direction to form a rotating motor with multi-pole pair windings distributed discretely along the long shaft, so that long shaft multi-point absolute synchronous driving is realized, and meanwhile, the torsional rigidity of long shaft driving is effectively improved.

In another embodiment of the invention, as shown in fig. 3, the rotor windings are distributed transversely along the large surface to form a linear motor with multi-pole pair windings distributed discretely along the large surface. The linear motor comprises a rotor structure and a stator structure which are connected through a sliding block 2-2-8, the sliding block 2-2-8 makes linear motion on a guide rail 2-2-2, and the guide rail is fixed on a stator structure base. All the unit rotor modules are rigidly connected through a connecting plate so as to ensure absolute synchronization in the motion process.

Specifically, a linear motor with multi-pole pair windings discretely distributed along the large surface in the transverse direction is topologically unfolded by a rotating motor with multi-pole pair windings discretely distributed along the long axis, and the motion of the motor is changed from rotation to linear. The winding connection mode of the linear motor with the large-area transversely and discretely distributed multi-pole pair windings is as follows: the first unit module 3, the second unit module 4 and the nth unit module 5 are rigidly connected through a connecting plate 2-2-1, and the connecting plate 2-2-1 is fixed with the rotor base 2-2-7 through an inner hexagon bolt 2-2-9. Each unit module fixed part is composed of a guide rail 2-2-2, a secondary yoke 2-2-3, a secondary permanent magnet 2-2-4 and a base 2-2-5, and the moving part is composed of a rotor 2-2-6, a rotor base 2-2-7 and a sliding block 2-2-8. The secondary permanent magnets 2-2-4 of each unit module are sequentially arranged on the secondary yoke 2-2-3, and the magnetizing directions of the adjacent secondary permanent magnets are opposite. The rotor 2-2-6 is arranged on the guide rail 2-2-2 through a rotor seat 2-2-7 and a sliding block 2-2-8. The rotor 2-2-6 is connected with the rotor base 2-2-7 through an inner hexagon bolt 2-2-9. Because the windings are in a serial connection mode, each unit module can generate the same thrust, the unit modules are arranged linearly according to a certain distance, and meanwhile, each rotor is connected through a connecting plate to form the linear motor with the large-area transversely and discretely distributed multi-pole pair windings, and the dynamic driving rigidity of the linear motor is effectively improved.

In practical application of the embodiment of the invention, as shown in fig. 4, the rotor windings are longitudinally distributed along the large surface to form a linear motor with multi-pole pair windings distributed discretely along the large surface in the longitudinal direction.

Specifically, the winding connection mode of the linear motor with the large-surface longitudinally and discretely distributed multi-pole pair windings is as follows: the first unit module 3, the second unit module 4 and the nth unit module 5 are rigidly connected through a connecting plate 2-2-1, and the connecting plate 2-2-1 is fixed with the rotor base 2-2-7 through an inner hexagon bolt 2-2-9. Each unit module shares one stator. Each unit module fixed part is composed of a guide rail 2-2-2, a secondary yoke 2-2-3, a secondary permanent magnet 2-2-4 and a base 2-2-5, and the moving part is composed of a rotor 2-2-6, a rotor base 2-2-7 and a sliding block 2-2-8. The permanent magnets 2-2-4 of each unit module are arranged in sequence, and the magnetizing directions of the adjacent secondary permanent magnets are opposite. The rotor 2-2-6 is arranged on the guide rail 2-2-2 through a rotor seat 2-2-7 and a sliding block 2-2-8. The rotor 2-2-6 is connected with the rotor base 2-2-7 through an inner hexagon bolt 2-2-9. Because the windings are in a serial connection mode, each unit module can generate the same thrust, the primary part of each unit module is placed on the same track, and meanwhile, each rotor is connected through the connecting plates to form the linear motor with the large-area longitudinally and discretely distributed multi-pole pair windings, and the dynamic driving rigidity of the linear motor is effectively improved.

Referring to fig. 1, in another embodiment of the present invention, the rotor structure is a permanent magnet rotor structure or a metal conductor rotor structure. The former is a permanent magnet synchronous rotating motor with multi-pole pair windings distributed discretely along a long shaft, and the latter is an alternating current asynchronous rotating motor with multi-pole pair windings distributed discretely along the long shaft.

And (3) topologically unfolding the rotor structure of the rotating motor to obtain the linear motor with the multi-pole pair windings distributed discretely along the large surface. When the stator is a permanent magnet, the stator can be made into a movable winding type permanent magnet synchronous linear motor, and when the stator is a metal conductor, the stator can be made into a movable winding type alternating current asynchronous linear motor. Conversely, when the rotor is a permanent magnet, the stator winding type permanent magnet synchronous linear motor can be manufactured; when the mover is a metal conductor, the stator winding type alternating current asynchronous linear motor can be manufactured.

As shown in fig. 6, the phase winding coils of the multi-pole pair winding motor are distributed discretely along the major axis in a star or delta connection manner, and the winding coils of each pole pair are supplied with power in series.

In particular, the winding A of the stator structure₁B₁C₁After power-on, is at A₁B₁C₁Rotating magnetic field phi for generating a pole pair in region₁At phi₁Under the action, the corresponding part of the rotor structure is rotated by the electromagnetic moment. For the same reason, stator winding A₂B₂C₂、A_nB_nC_nAfter being electrified, the rotating magnetic fields phi of one pole pair are respectively generated in corresponding areas₂、Φ_nRespectively driving the corresponding parts of the rotor structure to rotate. Each multi-pole pair winding unit passes the same current to generate the same rotating magnetic field in the winding area.

The working principle of the invention is as follows: a schematic diagram of a conventional rotating electric machine with multi-pole pair windings is shown in fig. 6; winding A of a stator structure₁B₁C₁After power-on, is at A₁B₁C₁Rotating magnetic field phi for generating a pole pair in region₁At phi₁Under the action, the corresponding part of the rotor structure is rotated by the electromagnetic moment. For the same reason, stator winding A₂B₂C₂、A_nB_nC_nAfter being electrified, the rotating magnetic fields phi of one pole pair are respectively generated in corresponding areas₂、Φ_nRespectively driving the corresponding parts of the rotor structure to rotate. The windings of each pole pair pass through the same current and generate the same rotating magnetic field in the winding area, so that the windings of each pole pair generate the torque with the same size and the same direction on the rotor structure. If n pole pair windings are distributed in a discrete manner along the same long axis in the axial direction, the distributed positions of the pole pair windings are symmetrically distributed along the circumferential direction, and in addition, a rotor structure is also arranged on the long axis corresponding to the pole pair windings, a motor, namely a rotating motor with multi-pole pair windings distributed discretely along the long axis is obtained. Furthermore, the rotating motor topology with the multi-pole pair windings distributed discretely along the long axis is expanded, and the linear motor with the multi-pole pair windings distributed discretely along the large surface is obtained.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.