Multi-working magnetic potential hybrid excitation linear motor

Abstract

This application discloses a multi-operating magnetomotive force hybrid excitation linear motor, including an armature primary side, an excitation primary side, and a secondary side located between the armature primary side and the excitation primary side. The armature primary side includes multiple armature teeth, each of which has an armature winding wound on it. The excitation primary side includes multiple excitation teeth, each of which has an excitation winding wound on it, and each excitation tooth is provided with a permanent magnet array. The secondary side includes multiple segmented modulation blocks. The multi-operating magnetomotive force hybrid excitation linear motor provided in this application adopts a split primary structure, which can largely solve the space limitation problem caused by the armature winding and excitation winding being on the same side in hybrid excitation motors of related technologies. It effectively reduces the conflict between electrical and magnetic loads caused by the armature winding and permanent magnets being on the same side, and introduces additional air gap magnetic field working harmonics to compensate for the insufficient average thrust of the traditional alternating pole structure.

Description

Technical Field

[0001] This application relates to the field of motor technology, specifically to a multi-operating magnetomotive force hybrid excitation linear motor. Background Technology

[0002] Permanent magnet synchronous linear motors (PMLMs) require no intermediate transmission mechanisms or additional mechanical structures, enabling direct-drive, high-efficiency, low-vibration, and low-noise operation. They are widely used in transportation, industrial control, and civilian medical fields. With the development of my country's industrial technology and the introduction of the "dual-carbon target," PMLMs are gradually evolving towards higher thrust density, higher power factor, and higher performance efficiency.

[0003] In hybrid excitation motors of related technologies, the armature winding and the excitation winding are located on the same side, which leads to problems such as space constraints and heat dissipation difficulties. The armature winding and the permanent magnet being on the same side causes a conflict between electrical load and magnetic load.

[0004] The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art. Summary of the Invention

[0005] The purpose of this application is to provide a multi-operating magnetomotive force hybrid excitation linear motor. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general description, nor is it intended to identify key / important components or to depict the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0006] According to one aspect of the embodiments of this application, a multi-operating magnetomotive force hybrid excitation linear motor is provided, including an armature primary side, an excitation primary side, and a secondary side located between the armature primary side and the excitation primary side; the armature primary side includes a plurality of armature teeth, each armature tooth having an armature winding wound on it; the excitation primary side includes a plurality of excitation teeth, each excitation tooth having an excitation winding wound on it, and each excitation tooth having a permanent magnet array disposed thereon; the secondary side includes a plurality of segmented modulation blocks.

[0007] In some embodiments of this application, the multi-operating magnetomotive force hybrid excitation linear motor further includes a dual air gap region, which includes an upper air gap region and a lower air gap region. The upper air gap region is located between the primary armature side and the secondary side, and the lower air gap region is located between the primary excitation side and the secondary side.

[0008] In some embodiments of this application, the primary armature side includes three armature tooth groups, each of which includes two armature teeth; the armature winding adopts a concentrated winding structure, and the armature winding wound on the armature teeth of the same armature tooth group is the same phase.

[0009] In some embodiments of this application, the primary excitation side includes three excitation tooth groups, each of which includes two excitation teeth; the centerline of each excitation tooth coincides with the centerline of the corresponding armature tooth, and the end width of the excitation tooth is consistent with the end width of the corresponding armature tooth.

[0010] In some embodiments of this application, the permanent magnet array includes a first permanent magnet and a second permanent magnet, and the permanent magnet array at the end of each set of excitation teeth is arranged in the manner of Fe / N / Fe / NN / Fe / N / Fe or Fe / S / Fe / SS / Fe / S / Fe.

[0011] In some embodiments of this application, the width of the permanent magnet and the width of the ferromagnetic pole are symmetrically arranged about the center line of the excitation tooth, the width of the inner permanent magnet is the same as the width of the inner ferromagnetic pole, and the width of the outer permanent magnet is the same as the width of the outer ferromagnetic pole; the magnetization direction of the permanent magnet is vertically upward or vertically downward.

[0012] In some embodiments of this application, the excitation winding on the primary side of the excitation circuit adopts a concentrated winding structure, and the excitation direction is consistent with the magnetization direction of the permanent magnet at the end of the excitation tooth.

[0013] In some embodiments of this application, the multi-working magnetomotive force hybrid excitation linear motor further includes an assembly bracket, and the segmented modulation block is fixed on the assembly bracket.

[0014] In some embodiments of this application, the assembly bracket includes two non-magnetic aluminum rods, two modulation block supports arranged in parallel to each other, and two end plates arranged in parallel to each other. The same end of the two modulation block supports in the length direction is connected by a non-magnetic aluminum rod and an end plate, respectively. The modulation block is placed between the two modulation block supports, and the gap between the assembly bracket and the segmented modulation block is filled with epoxy resin.

[0015] In some embodiments of this application, the excitation tooth tip includes a first ferromagnetic pole and a second ferromagnetic pole;

[0016] The width of the first permanent magnet is equal to the width of the first ferromagnetic pole, the width of the second permanent magnet is equal to the width of the second ferromagnetic pole, and the width of the excitation tooth end is the sum of the width of the first permanent magnet, the width of the second permanent magnet, the width of the first ferromagnetic pole, and the width of the second ferromagnetic pole.

[0017] Excitation tooth tip width permanent magnet pole distance and secondary polar distance satisfy

[0018] 6 =12 = ,in, The number of modulation levels; the permanent magnet pole pitch is the pole pitch between the first permanent magnet and the second permanent magnet, and the distance between two adjacent segmented modulation blocks (31) is the secondary pole pitch;

[0019] Distance between the center lines of the excitation teeth in the same group ;

[0020] The distance between the center lines of the excitation teeth on the same side of each group ;

[0021] With the total height of the motor remaining constant, the total height of the armature primary is... Less than the total height of the primary excitation stage .

[0022] One aspect of the technical solution provided in this application embodiment may include the following beneficial effects:

[0023] The multi-operating magnetomotive force hybrid excitation linear motor provided in this application adopts a split primary structure, which can largely solve the problems of space constraints and heat dissipation difficulties caused by the armature winding and excitation winding being located on the same side in hybrid excitation motors of related technologies. It effectively reduces the conflict between electrical and magnetic loads caused by the armature winding and permanent magnet being on the same side. In addition, it introduces additional air gap magnetic field working harmonics in the double air gap region to compensate for the insufficient average thrust of the traditional alternating pole structure.

[0024] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of a multi-operating magnetomotive force hybrid excitation linear motor according to an embodiment of this application is shown.

[0027] Figure 2 A schematic diagram of the structure of a multi-operating magnetomotive force hybrid excitation linear motor according to an embodiment of this application is shown.

[0028] Figure 3 A schematic diagram of the structure of an assembly bracket according to an embodiment of this application is shown. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0030] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0031] In hybrid excitation motors of related technologies, the armature winding and excitation winding are located on the same side, leading to problems such as space constraints and heat dissipation difficulties, as well as the conflict between electrical and magnetic loads caused by the armature winding and permanent magnet being on the same side. One embodiment of this application provides a multi-operating magnetomotive force hybrid excitation linear motor, which may include an armature primary side, an excitation primary side, and a secondary side located between the armature primary side and the excitation primary side. The armature primary side includes multiple armature teeth, each with an armature winding wound on it. The excitation primary side includes multiple excitation teeth, each with an excitation winding wound on it, and each excitation tooth is equipped with a permanent magnet array. The secondary side includes multiple segmented modulation blocks. This embodiment of the application adopts a split primary structure, which can effectively solve the problems of space constraints and heat dissipation difficulties caused by the armature winding and excitation winding being located on the same side in hybrid excitation motors of related technologies, and effectively reduce the conflict between electrical and magnetic loads caused by the armature winding and permanent magnet being on the same side.

[0032] In some embodiments, the multi-operating magnetomotive force hybrid excitation linear motor further includes a dual air gap region, which includes an upper air gap region and a lower air gap region. The upper air gap region is located between the primary side of the armature and the secondary side, and the lower air gap region is located between the primary excitation side and the secondary side.

[0033] In some embodiments, the primary armature side includes three armature tooth groups, each of which includes two armature teeth. The armature windings employ a concentrated winding structure, where the armature windings wound on the armature teeth of the same armature tooth group are of the same phase. The concentrated winding structure allows for a higher winding fill ratio within a limited space, thereby improving the motor's power output and efficiency. Using armature teeth from the same armature tooth group to wind the same phase effectively reduces mutual inductance and reactance between windings, improving the motor's dynamic performance. The concentrated winding structure of the armature tooth group simplifies the arrangement and connection of windings, facilitating production and assembly, and helping to reduce manufacturing costs. Furthermore, the concentrated winding design helps to evenly distribute heat, reducing the risk of localized overheating and improving the motor's reliability and lifespan. Due to the relative symmetry of the structure and the concentration of current, the motor can provide better torque response during starting and braking, improving overall performance. This structure on the primary armature side optimizes the electromagnetic field distribution of the motor, reduces noise and vibration, and improves operational smoothness.

[0034] In some embodiments, the primary excitation side includes three excitation tooth groups, each of which includes two excitation teeth. The centerline of each excitation tooth coincides with the centerline of the corresponding armature tooth, and the end width of the excitation tooth is consistent with the end width of the corresponding armature tooth. The coincidence of the centerlines of the excitation teeth and the armature teeth helps improve electromagnetic coupling efficiency, ensuring more efficient magnetic flux transmission, thereby increasing the motor's output power. The consistency of the end width of the excitation teeth with the armature teeth helps form a uniform air gap magnetic field, reducing magnetic field fluctuations and improving the stability and efficiency of motor operation. This primary excitation side structure can reduce eddy current losses and hysteresis losses, thereby improving the overall energy efficiency of the motor. A reasonable layout of the excitation tooth groups facilitates airflow, improves heat dissipation, and extends the motor's service life. Structural symmetry and consistency can reduce mechanical vibration and noise, improving the smoothness of motor operation. This design helps provide higher torque during startup, enhancing the motor's dynamic response.

[0035] In some embodiments, the permanent magnet array includes a first permanent magnet and a second permanent magnet, with the permanent magnet array at the end of each set of excitation teeth arranged in a Fe / N / Fe / NN / Fe / N / Fe or Fe / S / Fe / SS / Fe / S / Fe arrangement. This arrangement, using permanent magnets of different polarities alternating (such as Fe / N / Fe / N or Fe / S / Fe / S), can form a stronger and more uniform magnetic field, improving the motor's output power. Using permanent magnets of different widths introduces additional air gap magnetic field harmonics in the dual-air gap region, achieving multi-air gap magnetic density operation, compensating for the insufficient average thrust of traditional alternating pole structures, and further improving the motor's thrust density.

[0036] In some implementations, the widths of the permanent magnets and ferromagnetic poles are symmetrically arranged about the centerline of the excitation teeth. The width of the inner permanent magnet is the same as the width of the inner ferromagnetic pole, and the width of the outer permanent magnet is the same as the width of the outer ferromagnetic pole. The magnetization direction of the permanent magnets is vertically upward or vertically downward. This symmetrical design of the permanent magnet and ferromagnetic pole widths ensures a uniform magnetic field in the air gap, reducing magnetic field fluctuations and improving the stability of motor operation. The uniformity and strength of the magnetic field help reduce hysteresis and eddy current losses, thereby improving the overall energy efficiency of the motor. The symmetrical layout allows the motor to generate smoother torque under different loads, reducing torque pulsation and improving smooth operation. This design promotes smooth airflow, aids in motor thermal management, lowers operating temperature, and extends service life. The matching design of the permanent magnets and ferromagnetic poles effectively reduces lateral forces generated during operation, reducing mechanical wear. It enables a symmetrical magnetic field distribution, effectively reducing noise and vibration during motor operation and improving user experience. It achieves a stable structure and uniform magnetic field distribution, thereby reducing the failure rate and improving the reliability and durability of the motor.

[0037] In some implementations, the excitation winding on the primary side employs a concentrated winding structure, with the excitation direction aligned with the magnetization direction of the permanent magnet at the end of the excitation teeth. The concentrated winding generates a strong local magnetic field near the excitation teeth, consistent with the magnetization direction of the permanent magnet, which helps improve the motor's output power and efficiency. This structure optimizes the magnetic circuit, thereby reducing hysteresis and eddy current losses and improving motor energy efficiency. It also improves starting performance, providing greater starting torque and making the motor perform better during startup, suitable for applications requiring high starting torque. Furthermore, the concentrated design of the excitation winding allows the motor's control system to more flexibly adjust the excitation state, improving the motor's dynamic response; the concentrated winding structure helps distribute heat more evenly, improving thermal management and extending service life; and it optimizes electromagnetic compatibility, effectively reducing interference to surrounding electronic equipment and improving electromagnetic compatibility.

[0038] In some embodiments, the multi-operating magnetomotive force hybrid excitation linear motor further includes an assembly bracket on which the segmented modulation block is fixed. The assembly bracket includes a non-magnetic aluminum rod, epoxy resin, modulation block support, and end plate.

[0039] In some embodiments, the excitation tooth end includes a first ferromagnetic pole and a second ferromagnetic pole; the width of the first permanent magnet is equal to the width of the first ferromagnetic pole, the width of the second permanent magnet is equal to the width of the second ferromagnetic pole, and the width of the excitation tooth end is the sum of the width of the first permanent magnet, the width of the second permanent magnet, the width of the first ferromagnetic pole, and the width of the second ferromagnetic pole;

[0040] Excitation tooth tip width permanent magnet pole distance and secondary polar distance satisfy

[0041] 6 =12 = ,in, The number of modulation levels; the permanent magnet pole pitch is the pole pitch between the first permanent magnet and the second permanent magnet, and the distance between two adjacent segmented modulation blocks (31) is the secondary pole pitch;

[0042] Distance between the center lines of the excitation teeth in the same group ;

[0043] The distance between the center lines of the excitation teeth on the same side of each group ;

[0044] With the total height of the motor remaining constant, the total height of the armature primary is... Less than the total height of the primary excitation stage .

[0045] The following description, in conjunction with the accompanying drawings, describes a multi-operating magnetomotive force hybrid excitation linear motor according to an embodiment of this application.

[0046] refer to Figure 1 and Figure 2 As shown, one embodiment of this application provides a multi-operating magnetomotive force hybrid excitation linear motor, which is a multi-operating magnetomotive force flux reverse hybrid excitation linear motor. The multi-operating magnetomotive force hybrid excitation linear motor includes an armature primary side 1, an excitation primary side 2, a secondary side 3, and a double air gap region 4. The secondary side 3 is located between the armature primary side 1 and the excitation primary side 2, forming an upper air gap region 41 and a lower air gap region 42. The armature primary side 1 is provided with an armature winding 11, which is wound on the armature teeth 12. The excitation primary side 2 is simultaneously provided with an excitation winding 21 and a permanent magnet array 22, which are disposed on the excitation teeth 23. The secondary side 3 is provided with a segmented modulation block 31. The double air gap region 4 includes an upper air gap region 41 and a lower air gap region 42.

[0047] The motor has an armature primary side 1, an excitation primary side 2, and a secondary side 3. The secondary side 3 is located between the armature primary side 1 and the excitation primary side 2, thus forming a double air gap 4. The armature primary side 1 is provided with an armature winding 11, which is wound on the armature teeth 12. The excitation primary side 2 is provided with an excitation winding 21 and a permanent magnet array 22, which are arranged on the excitation teeth 23. The secondary side 3 is provided with a segmented modulation block 31. The double air gap 4 structure includes a first air gap region 41 and a second air gap region 42.

[0048] In some embodiments, the primary armature side of the hybrid excitation linear motor has six armature teeth 12, with two armature teeth 12 forming a group, for a total of three groups; the armature winding 11 adopts a concentrated winding structure, and the armature winding 11 wound around the same group of armature teeth 12 is the same phase.

[0049] In some embodiments, the primary excitation side of the multi-working magnetomotive force hybrid excitation linear motor has a total of six excitation teeth 23, with two excitation teeth 23 forming a group, for a total of three groups; each excitation tooth 23 is aligned with the center line of the corresponding armature tooth 12, and the end width of the excitation tooth 23 is consistent with the end width of the armature tooth 12.

[0050] In some embodiments, the permanent magnet array 22 on the primary side of the excitation is alternately embedded at the end of the excitation tooth 23. The arrangement of the permanent magnet array at the end of each excitation tooth is Fe / N / Fe / NN / Fe / N / Fe or Fe / S / Fe / SS / Fe / S / Fe. The width of the permanent magnet and the width of the ferromagnetic pole are symmetrically arranged about the center line of the excitation tooth 23. The width of the inner permanent magnet is consistent with the width of the inner ferromagnetic pole, and the width of the outer permanent magnet is consistent with the width of the outer ferromagnetic pole. The magnetization direction of the permanent magnet is vertically upward or vertically downward.

[0051] For example, the primary excitation winding 21 adopts a concentrated winding structure, and the excitation direction is consistent with the magnetization direction of the permanent magnet at the end of the excitation tooth.

[0052] For example, refer to Figure 3 As shown, a segmented modulation block 31 is provided on the secondary side and fixed on the mounting bracket 5. The mounting bracket 5 includes two non-magnetic aluminum rods 51, two parallel modulation block supports 52, and two parallel end plates 53. The same end of the two modulation block supports 52 in the length direction is connected by a non-magnetic aluminum rod 51 and an end plate 53, respectively. The modulation block 31 is placed between the two modulation block supports 52, and its two sides are fixed and sealed by the non-magnetic aluminum rods 51 and the end plates 53, respectively. The gap between the mounting bracket 5 and the segmented modulation block 31 is filled with epoxy resin 54. In this way, the segmented modulation block 31 can be firmly fixed.

[0053] For example, the dual air gap region 4 includes two parts: an upper air gap region 41 between the primary armature side 1 and the secondary side 3, and a lower air gap region 42 between the primary excitation side 2 and the secondary side 3.

[0054] refer to Figure 2 As shown, in some embodiments, the motor structural parameters of this multi-operating magnetomotive force hybrid excitation linear motor satisfy the following relationship:

[0055] (1) Width of permanent magnet , Ferromagnetic pole width , and the width of the excitation (armature) tooth tip satisfy: , , ;

[0056] (2) Width of excitation (armature) tooth tip permanent magnet pole distance Secondary pole moment satisfy:

[0057] 6 =12 = , The modulation level;

[0058] (3) Distance between the center lines of the excitation (armature) teeth in the same group ,satisfy: ;

[0059] (4) The distance between the center lines of the excitation (armature) teeth on the same side of each group ,satisfy: To ensure that the three back potentials are 120° apart;

[0060] (5) With the total height of the motor remaining constant, the total height of the armature primary is... Less than the total height of the primary excitation stage This ensures that the area of ​​the primary excitation slot can accommodate a sufficient number of excitation windings. By using DC currents of different directions and magnitudes to enhance or weaken the main magnetic flux, the output performance of the motor can be flexibly changed.

[0061] The multi-operating magnetomotive force hybrid excitation linear motor of this application embodiment is a multi-operating magnetomotive force flux reverse hybrid excitation linear motor. It adopts a split primary structure, which can effectively solve the problems of space limitation and heat dissipation difficulties caused by the armature winding and excitation winding being set on the same side in the hybrid excitation motor of related technologies. It can also effectively reduce the conflict between electrical load and magnetic load caused by the armature winding and permanent magnet being on the same side.

[0062] Furthermore, in related technologies, the excellent properties of rare-earth permanent magnet materials enable permanent magnet synchronous linear motors to achieve higher energy efficiency, better dynamic performance, and simpler maintenance. However, high-performance permanent magnet materials are expensive, and for applications in long-stroke fields such as transportation, laying a large number of permanent magnets would increase the manufacturing and maintenance costs of the motor. Moreover, as a single excitation source, the permanent magnet limits the motor's voltage regulation capability and speed range, failing to meet the variable operating conditions and performance requirements in industrial control. Related technologies for permanent magnet linear motors also face the risk of irreversible demagnetization of the permanent magnets, and spatial conflicts can occur between the armature winding and the excitation winding. Additionally, the cogging and edge structures of linear motors cause significant fluctuations in positioning force and thrust, leading to a reduction in thrust density. While adding auxiliary teeth or skewed slots can reduce the positioning force to a limited extent, further exploration of methods to improve the motor's thrust density from other aspects is urgently needed. This application adopts a novel alternating pole structure, using ferromagnetic poles as the electrical excitation path in hybrid excitation, effectively reducing the risk of large-area irreversible demagnetization of permanent magnets; while reducing the amount of permanent magnets used and improving the utilization rate of permanent magnets, by setting permanent magnets of different widths, additional air gap magnetic field working harmonics are introduced in the double air gap region to achieve multi-air gap magnetic density operation, making up for the lack of average thrust of traditional alternating pole structures, and further improving the thrust density of the motor.

[0063] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0064] The above embodiments merely illustrate the implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A multi-operating magnetomotive force hybrid excitation linear motor, characterized in that, It includes an armature primary side, an excitation primary side, and a secondary side located between the armature primary side and the excitation primary side; the armature primary side includes a plurality of armature teeth, each armature tooth having an armature winding wound on it; the excitation primary side includes a plurality of excitation teeth, each excitation tooth having an excitation winding wound on it, and each excitation tooth having a permanent magnet array disposed thereon; the secondary side includes a plurality of segmented modulation blocks; The primary excitation side includes three excitation tooth groups, each of which includes two excitation teeth; the centerline of each excitation tooth coincides with the centerline of the corresponding armature tooth, and the end width of the excitation tooth is consistent with the end width of the corresponding armature tooth. The permanent magnet array includes a first permanent magnet and a second permanent magnet, and the permanent magnet array at the end of each set of excitation teeth is arranged in the manner of Fe / N / Fe / NN / Fe / N / Fe or Fe / S / Fe / SS / Fe / S / Fe; The excitation tooth tip includes a first ferromagnetic pole and a second ferromagnetic pole; The width of the first permanent magnet is equal to the width of the first ferromagnetic pole, the width of the second permanent magnet is equal to the width of the second ferromagnetic pole, and the width of the excitation tooth end is the sum of the width of the first permanent magnet, the width of the second permanent magnet, the width of the first ferromagnetic pole, and the width of the second ferromagnetic pole. Excitation tooth tip width permanent magnet pole distance and secondary polar distance satisfy 6 =12 = ,in, The number of modulation levels; the permanent magnet pole pitch is the pole pitch between the first permanent magnet and the second permanent magnet, and the distance between two adjacent segmented modulation blocks (31) is the secondary pole pitch; Distance between the center lines of the excitation teeth in the same group ; The distance between the center lines of the excitation teeth on the same side of each group ; With the total height of the motor remaining constant, the total height of the armature primary is... Less than the total height of the primary excitation stage .

2. The multi-operating magnetomotive force hybrid excitation linear motor according to claim 1, characterized in that, The multi-operating magnetomotive force hybrid excitation linear motor also includes a dual air gap region, which includes an upper air gap region and a lower air gap region. The upper air gap region is located between the primary side of the armature and the secondary side, and the lower air gap region is located between the primary excitation side and the secondary side.

3. The multi-operating magnetomotive force hybrid excitation linear motor according to claim 1, characterized in that, The primary armature side includes three armature tooth groups, each of which includes two armature teeth; the armature winding adopts a concentrated winding structure, and the armature winding wound on the armature teeth of the same armature tooth group is the same phase.

4. The multi-operating magnetomotive force hybrid excitation linear motor according to claim 1, characterized in that, The width of the permanent magnet and the width of the ferromagnetic pole are symmetrically arranged about the center line of the excitation tooth. The width of the inner permanent magnet is the same as the width of the inner ferromagnetic pole, and the width of the outer permanent magnet is the same as the width of the outer ferromagnetic pole. The magnetization direction of the permanent magnet is vertically upward or vertically downward.

5. The multi-operating magnetomotive force hybrid excitation linear motor according to claim 1, characterized in that, The excitation winding on the primary side of the excitation circuit adopts a concentrated winding structure, and the excitation direction is consistent with the magnetization direction of the permanent magnet at the end of the excitation tooth.

6. The multi-operating magnetomotive force hybrid excitation linear motor according to claim 1, characterized in that, The multi-working magnetomotive force hybrid excitation linear motor also includes an assembly bracket, and the segmented modulation block is fixed on the assembly bracket.

7. The multi-operating magnetomotive force hybrid excitation linear motor according to claim 6, characterized in that, The assembly bracket includes two non-magnetic aluminum rods, two modulation block supports arranged in parallel, and two end plates arranged in parallel. The same end of the two modulation block supports in the length direction is connected by a non-magnetic aluminum rod and an end plate, respectively. The modulation block is placed between the two modulation block supports, and the gap between the assembly bracket and the segmented modulation block is filled with epoxy resin.

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