Transverse flux linear synchronous motor with integrated traction and suspension guidance

Abstract

The application belongs to the technical field of magnetic suspension, and particularly provides a transverse flux linear synchronous motor integrating traction, suspension and guidance, which comprises a primary assembly and a secondary assembly oppositely arranged along the moving direction of a target installation component where the motor is located, the primary assembly comprises a primary iron core (1), a primary armature winding (2) and a first non-magnetic fixed frame (51), the secondary assembly comprises a secondary iron core (3), a secondary excitation winding (4) and a second non-magnetic fixed frame (52), wherein the primary assembly and the secondary assembly are both encapsulated in an armature magnetic separation block (15) and a secondary magnetic separation block (16), and the primary assembly and the secondary assembly have an air gap (6) therebetween. The transverse flux linear synchronous motor integrating traction, suspension and guidance provided by the application can realize the integration of traction, suspension and guidance when applied to scenarios such as magnetic levitation trains.

Description

Technical Field

[0001] This invention belongs to the field of magnetic levitation technology, and in particular relates to a transverse magnetic flux linear synchronous motor that integrates traction and levitation guidance and can be applied to scenarios such as magnetic levitation trains (target installation components). Background Technology

[0002] Maglev technology has seen significant development in the rail transit field due to its advantages such as high operating speed, high safety performance, no wear and tear, and environmental friendliness. As a crucial component (drive mechanism) of maglev trains, the linear motor is primarily used to drive the maglev system, thus playing a vital role in the stability and reliability of train operation.

[0003] Linear motors include linear induction motors and linear synchronous motors. Linear induction motors are mainly used in low- and medium-speed magnetic levitation systems, while linear synchronous motors are mainly used in high-speed magnetic levitation systems. In magnetic levitation systems using linear motors as the drive mechanism, the levitation and guidance functions rely primarily on levitation electromagnets or other coils. Therefore, two or more devices are usually required to perform propulsion, levitation, and automatic guidance, making the existing magnetic levitation system structure complex and increasing the weight and cost of the magnetic levitation train. Furthermore, traditional linear motors exhibit edge effects due to magnetic circuit breaks, resulting in reduced thrust and efficiency. Additionally, the windings of linear motors often suffer from severe mutual coupling, leading to lower thrust density and winding utilization.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] Technical issues

[0006] In order to at least partially solve the above-mentioned technical problems, this invention is proposed.

[0007] Technical solution

[0008] In view of this, the present invention provides a transverse flux linear synchronous motor integrating traction and suspension guidance. The motor includes a primary component and a secondary component arranged opposite to each other along the movement direction of the target mounting component where the motor is located. The primary component includes a primary iron core, a primary armature winding, and a first non-magnetic fixing frame. The primary armature winding is disposed in the primary iron core and fixed by the first non-magnetic fixing frame. The secondary component includes a secondary iron core, a secondary excitation winding, and a second non-magnetic fixing frame. The secondary excitation winding is disposed in the secondary iron core and fixed by the second non-magnetic fixing frame. Both the primary component and the secondary component are encapsulated in an armature magnetic isolation block and a secondary magnetic isolation block, and an air gap exists between the primary component and the secondary component.

[0009] In one possible implementation of the aforementioned lateral flux linear synchronous motor that integrates traction and suspension guidance, the armature magnetic isolation block and / or the secondary magnetic isolation block are made of epoxy resin.

[0010] In one possible implementation of the aforementioned lateral flux linear synchronous motor integrating traction and suspension guidance, viewed along the movement direction of the target mounting component where the motor is located, both the primary component and the secondary component comprise multiple groups. Each group of the primary component comprises M primary iron cores, and each group of the secondary component comprises N secondary iron cores, where M and N are both ≥ 1.

[0011] In one possible implementation of the aforementioned transverse flux linear synchronous motor that integrates traction and suspension guidance, the secondary core is equipped with a DC excitation winding and / or a permanent magnet.

[0012] It can be seen that when the secondary excitation winding has a DC excitation structure, the traveling wave magnetic field formed by the AC-powered primary armature winding and the magnetic pole magnetic field formed by the DC-powered secondary excitation winding interact to generate traction force. When the secondary excitation winding adopts a permanent magnet or hybrid excitation structure, the traveling wave magnetic field formed by the primary armature winding and the permanent magnet interact to generate traction force.

[0013] For example, permanent magnets can be made of neodymium iron boron, and the structure can be built-in or magnetically focused.

[0014] For example, when using a hybrid excitation method that includes a DC excitation winding and a permanent magnet, the permanent magnet can provide about 80% of the levitation force, which is the non-adjustable portion, while the DC excitation winding can provide about 20%, which is the adjustable portion. This adjustable portion can be used to adjust the levitation air gap when it is disturbed.

[0015] The traction force of the motor can be increased by appropriately increasing the number of magnetic poles, such as 2 pairs, 4 pairs, or 6 pairs. Correspondingly, the number of primary windings can also be increased appropriately.

[0016] In one possible implementation of the aforementioned transverse flux linear synchronous motor that integrates traction and suspension guidance, adjacent secondary excitation windings are connected in reverse series to form alternating excitation poles.

[0017] In one possible implementation of the aforementioned transverse flux linear synchronous motor that integrates traction and suspension guidance, the primary armature winding and / or the secondary excitation winding are toroidal concentrated windings.

[0018] Concentrated windings simplify the motor structure, eliminate edge effects, and improve winding utilization.

[0019] In one possible implementation of the aforementioned transverse flux linear synchronous motor that integrates traction and suspension guidance, the primary core and / or the secondary core have a U-shaped structure.

[0020] In one possible implementation of the aforementioned transverse flux linear synchronous motor that integrates traction and suspension guidance, the primary core and / or the secondary core are made of stacked silicon steel sheets with a U-shaped cross-section.

[0021] In one possible implementation of the aforementioned lateral flux linear synchronous motor that integrates traction and suspension guidance, the primary component and / or the secondary component are movably disposed on the motor.

[0022] The lateral flux linear synchronous motor integrating traction and levitation guidance described in this invention can be applied to various application scenarios in the field of magnetic levitation corresponding to the components to be installed, such as, but not limited to, maglev trains and electromagnetic catapults. Taking its application on a maglev train as an example, the primary component of the lateral flux linear synchronous motor integrating traction and levitation guidance is typically mounted on the lateral guide rail, while the secondary component is typically mounted on the suspension support of the maglev train body. The primary armature winding is powered by three-phase alternating current, and the secondary excitation winding is excited by direct current. The traveling wave magnetic field generated by the primary armature winding and the secondary excitation magnetic field interact to provide traction force for the motor. When the primary component is fixed, the speed of the secondary component is the same as the speed of the traveling wave magnetic field.

[0023] In the lateral magnetic flux linear synchronous motor integrating traction and levitation guidance of the present invention, two opposing U-shaped (primary and secondary) iron cores form a lateral magnetic flux path perpendicular to the direction of motion of the maglev train. Specifically, this magnetic flux path passes through the primary iron core, the secondary iron core, and the air gap to form a closed magnetic circuit and is perpendicular to the direction of the traveling wave magnetic field of the motor. Since the plane containing the lateral magnetic flux path is perpendicular to the direction of the traveling magnetic field, the electrical load and magnetic load of the motor no longer restrict each other, which can significantly improve the traction force and power density of the motor. The traveling wave magnetic field generated by the primary armature winding interacts with the magnetic pole magnetic field generated by the secondary excitation winding to generate traction force. The electromagnetic force between the secondary excitation winding and the primary iron core provides the main levitation force of the motor. When relative displacement occurs between the primary and secondary components, a lateral restoring force, i.e., a guiding force, will be generated between the opposing U-shaped iron cores to return the primary and secondary components to their original aligned positions. Based on this, the motor of the present invention can realize the integration of traction, levitation and guidance functions, has a simple structure, and when applied to a magnetic levitation system, it can reduce the weight of the magnetic levitation train, reduce the difficulty of equipment installation, and improve the operational reliability of the magnetic levitation train.

[0024] In the lateral flux linear synchronous motor integrating traction and levitation guidance of the present invention, the levitation force between the primary and secondary components mainly comprises the interaction forces between the primary iron core and the secondary excitation magnetic field, between the primary armature winding and the secondary excitation magnetic field, and between the primary armature winding and the secondary iron core. When external disturbances cause changes in the levitation force, the air gap of the motor will also change. At this time, the magnitude of the levitation force can be changed by adjusting the magnitude of the excitation current through a closed-loop control system, thereby ensuring the stable operation of the motor. In the case where the secondary excitation winding adopts a hybrid excitation structure, the attraction between the permanent magnet and the primary iron core is the main component of the levitation force, and the DC excitation regulating winding can also provide an adjustable levitation force for the motor.

[0025] When the primary and / or secondary components are laterally displaced by external disturbances, the mutual attraction of electromagnetic forces generates a force (called a guiding force) between the teeth of the spatially opposed primary and secondary iron cores, which is opposite to the direction of the lateral displacement. This guiding force allows the displaced primary and / or secondary components to return to their initial positions (i.e., their aligned positions). This achieves the guiding function of the motor. When a hybrid excitation structure is used, the DC excitation regulating winding can also provide an adjustable guiding force for the motor, increasing its anti-interference capability.

[0026] When the secondary excitation winding adopts a permanent magnet structure, the magnetic field generated by the permanent magnet and the traveling wave magnetic field generated by the armature interact to produce traction force, achieving linear motion. The primary and secondary components attract each other under the influence of the air gap magnetic field formed by the permanent magnet and the armature, generating levitation force and forming a levitation air gap. When the secondary and primary components on the levitation support experience lateral displacement, due to the attractive force between the permanent magnet and the primary core, the opposing primary and secondary components will generate an attractive force in the opposite direction to the lateral displacement, causing the primary or secondary component to return to its original position after displacement, thus completing the guiding function.

[0027] When the secondary excitation winding adopts a hybrid excitation structure, the interaction between the motor armature magnetic field and the excitation magnetic field generated by the secondary permanent magnet produces a traction force that drives the motor to achieve linear motion. The primary and secondary components of the motor attract each other under the influence of the air gap magnetic field, generating a levitation force that allows the motor to move without friction along the direction of motion. Of this levitation force, 80% is mainly borne by the permanent magnet, and 20% by the excitation winding, with the excitation winding providing an adjustable portion. When external disturbances cause fluctuations in the levitation force, the excitation winding can adjust the levitation force. When lateral displacement occurs between the primary and secondary components, the air gap magnetic field generates an attractive force opposite to the direction of lateral displacement, causing the displaced primary or secondary component to return to its original position. This attractive force provides guidance for the motor. The attraction between the permanent magnet and the primary core provides the main guiding force, while the guiding force provided by the excitation winding is an adjustable portion. When a large lateral offset occurs, the guiding force can be adjusted by changing the current in the excitation winding to achieve stable operation of the motor.

[0028] In summary, the lateral flux linear synchronous motor integrating traction and levitation guidance of this invention can generate thrust, levitation force, and guiding force. When applied in maglev trains, it can provide traction, levitation, and guiding force, achieving integrated traction, levitation, and lateral guidance functions, thus improving the operational reliability of maglev trains. Because the application of this lateral flux linear synchronous motor in maglev systems simplifies the structure of the maglev system, it reduces the weight of the maglev train (maglev system) and lowers the installation difficulty of related equipment. Attached Figure Description

[0029] The lateral flux linear synchronous motor integrating traction and suspension guidance of the present invention will now be described with reference to the accompanying drawings. In the drawings:

[0030] Figure 1 This diagram illustrates the application of a transverse magnetic flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention in a magnetic levitation train.

[0031] Figure 2 A schematic diagram of a transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to an embodiment of the present invention is shown.

[0032] Figure 3 This diagram illustrates the principle of levitation function implementation of a transverse magnetic flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention.

[0033] Figure 4 This diagram illustrates the guiding principle of a transverse magnetic flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention.

[0034] Figure 5 This is a side view of a lateral flux linear synchronous motor integrating traction and suspension guidance according to an embodiment of the present invention after assembly.

[0035] Figure 6 This is a side perspective view of a lateral flux linear synchronous motor integrating traction and suspension guidance according to an embodiment of the present invention after assembly.

[0036] Figure 7 This diagram illustrates the power supply of the primary armature winding of a transverse flux linear synchronous motor integrating traction and suspension guidance according to an embodiment of the present invention.

[0037] Figure 8 This diagram illustrates the power supply schematic of the secondary excitation winding of a transverse flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention.

[0038] Figure 9 This is a side view schematic diagram of the cooling system of the primary armature winding of a transverse flux linear synchronous motor that integrates traction and suspension guidance according to an embodiment of the present invention.

[0039] Figure 10 This is a top view schematic diagram of the cooling system of the secondary excitation winding of a transverse flux linear synchronous motor that integrates traction and suspension guidance according to an embodiment of the present invention.

[0040] Figure 11 A schematic diagram of the structure of the transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to a second embodiment of the present invention is shown.

[0041] Figure 12 A schematic diagram of the structure of the transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to a third embodiment of the present invention is shown.

[0042] Figure 13The diagram shows a structural schematic of a transverse flux linear synchronous motor integrating traction and suspension guidance according to a fourth embodiment of the present invention. It is a structural diagram of a U-shaped transverse flux permanent magnet synchronous linear motor.

[0043] Figure 14 The diagram shows a structural schematic of a transverse flux linear synchronous motor integrating traction and suspension guidance according to a fifth embodiment of the present invention, which is another structural diagram of a U-shaped transverse flux permanent magnet synchronous linear motor.

[0044] Figure 15 This diagram illustrates the structure of a transverse flux linear synchronous motor integrating traction and levitation guidance according to a sixth embodiment of the present invention, which is a structural diagram of a U-shaped transverse flux hybrid excitation linear synchronous motor; and

[0045] Figure 16 The diagram shows a structural schematic of a transverse flux linear synchronous motor integrating traction and suspension guidance according to the seventh embodiment of the present invention, which is another structural diagram of a U-shaped transverse flux hybrid excitation linear synchronous motor. Detailed Implementation

[0046] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0047] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The singular terms "a" and "this" may also include plural forms.

[0048] Furthermore, to better illustrate the present invention, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that the present invention can be practiced even without certain specific details. In some instances, the principles of magnetic levitation trains, which are well-known to those skilled in the art, have not been described in detail in order to highlight the main points of the present invention.

[0049] Reference Figure 1 and Figure 10 , Figure 1 This diagram illustrates the application of a lateral magnetic flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention in a magnetic levitation train. Figure 2This diagram illustrates the structure of a transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to an embodiment of the present invention. Figure 3 This diagram illustrates the principle of levitation function implementation of a transverse magnetic flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention. Figure 4 This diagram illustrates the guiding principle of a transverse magnetic flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention. Figure 5 This diagram shows a side view of a lateral flux linear synchronous motor integrating traction and suspension guidance according to an embodiment of the present invention after assembly. Figure 6 This diagram shows a side perspective view of a lateral flux linear synchronous motor integrating traction and suspension guidance according to an embodiment of the present invention after assembly. Figure 7 This diagram illustrates the power supply schematic of the primary armature winding of a transverse flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention. Figure 8 This diagram illustrates the power supply schematic of the secondary excitation winding of a lateral flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention. Figure 9 This diagram shows a side view of the cooling system of the primary armature winding of a transverse flux linear synchronous motor that integrates traction and suspension guidance according to an embodiment of the present invention. Figure 10 This is a top view schematic diagram of the cooling system of the secondary excitation winding of a transverse flux linear synchronous motor integrating traction and levitation guidance according to an embodiment of the present invention. Figure 1 and Figure 10 As shown, when the integrated traction and levitation guiding transverse flux linear synchronous motor is applied in a maglev train, in one possible implementation, the maglev train 100 can move along a transverse track 13 with a T-shaped cross-section supported by tower supports 12. The integrated traction and levitation guiding transverse flux linear synchronous motor of the present invention is symmetrically installed on both sides below the train. For ease of analysis, a single motor is shown here with the primary component located directly above the secondary component. It should be understood that in other embodiments of the present invention, the motor may include multiple motors, and the primary / secondary components may be selected in other suitable positions. The motor includes a primary component and a secondary component, wherein:

[0050] The primary assembly includes a primary core 1, a primary armature winding 2, and a first non-magnetic fixing frame 51. The primary core 1 is made of longitudinally extending silicon steel sheets with an inverted U-shaped cross-section stacked together. Multiple (three) primary cores 1 are fixed together by the first non-magnetic fixing frame 51 made of non-magnetic material. The primary core 1 includes a bottom 71 in the middle and two shanks (81, 91) extending from both ends of the bottom. In this embodiment, the primary armature winding 2 is wound on the bottom 71 of the primary core 1.

[0051] The secondary assembly includes a secondary core 3, a secondary excitation winding 4, and a second non-magnetic fixing frame 52. The secondary core 3 is composed of longitudinally extending, U-shaped cross-section silicon steel sheets stacked together. Multiple (two) secondary cores 3 are fixed together by the second non-magnetic fixing frame 5, which is made of non-magnetic material. The secondary core 3 also includes a bottom 72 in the middle and two shanks (82, 92) extending from both ends of the bottom. In this embodiment, the secondary excitation winding 4 is wound on the shanks (82, 92) of the secondary core 3. The secondary excitation winding 4 is powered by a DC power supply with the same amplitude but different directions, connected in reverse series to form two pairs of magnetic poles. There is an air gap 6 between the primary assembly and the secondary assembly. The primary armature winding 2, powered by three-phase AC, interacts with the secondary excitation winding 4, powered by DC, to form a traveling wave magnetic field, generating a traction force. Understandably, depending on actual needs, the primary armature winding 2 can also be wound on the two shanks (82, 92) of the primary core 1.

[0052] In one possible implementation, the primary assembly of the motor is mounted below the rail 13, with the primary armature winding wound on a downward-opening, U-shaped primary core. The secondary assembly is mounted on the suspension bracket 11, with the secondary excitation winding wound on an upward-opening, U-shaped secondary core. The primary assembly is fixed to the transverse guide rail 13 by an armature back plate 14, and the secondary assembly is fixed to the suspension bracket 11 by an electromagnet back plate 17. The primary and secondary assemblies are encapsulated in an armature magnetic shielding block 15 and a secondary magnetic shielding block 16, respectively, made of epoxy resin.

[0053] To simplify the analysis of the motor's levitation function, this analysis only considers the case where the secondary and primary components of the motor are aligned. It can be seen that the primary and secondary cores provide a low-resistivity path, with the main magnetic flux plane perpendicular to the direction of the motor's traveling wave magnetic field. The dashed line M represents the main magnetic flux path, which forms a closed magnetic circuit via the air gap 6 between the primary and secondary components, and the primary and secondary cores 1 and 3. This closed magnetic circuit allows one electromagnet to be attracted to the other, resulting in an attractive force between the two opposing U-shaped electromagnets, thus generating a levitation force. The levitation force between the two electromagnets can be controlled by adjusting the current in the excitation coil to maintain a constant air gap during motor operation.

[0054] To simplify the analysis of the motor's guiding function, this section only considers the case of lateral misalignment between the primary and secondary components. Since magnetic flux always closes along the path of least magnetic reluctance, in this U-shaped core structure with opposing components, when the core moves to the position of least magnetic reluctance, its central axis will coincide with the central axis of the magnetic field. Therefore, when relative lateral movement occurs between the primary and secondary components, causing them to deviate from their aligned positions, a resultant attractive force F in the opposite direction is generated. This resultant force F can be decomposed into a vertical component F0. y and horizontal component F x This attraction allows the primary or secondary components to return to their original aligned positions, thus enabling the motor to achieve a self-stabilizing guiding function.

[0055] In one possible implementation, the armature magnetic shielding block 15 is fixed to the armature backplate 14, and the secondary magnetic shielding block 16 is fixed to the electromagnet backplate 17. Both the armature backplate 14 and the electromagnet backplate 17 are made of a high-permeability material (e.g., steel) to concentrate the magnetic field and minimize the magnetic reluctance of the circuit. Alternatively, steel or silicon steel sheets can be used instead of a steel armature backplate to reduce eddy currents. The gap between the armature magnetic shielding block 15 and the secondary magnetic shielding block 16 is the air gap 6 between the primary and secondary components of the aforementioned motor. Stable operation of the motor requires maintaining a constant air gap; therefore, a closed-loop control system is essential. As the magnetic flux changes, if the primary component is fixed, the traction force generated by the motor will push the secondary component to move longitudinally. The arrow 'd' in the figure indicates the direction of motor movement, which is the longitudinal direction mentioned here. Furthermore, depending on the application, the primary component can also serve as the moving part of the motor. And the direction of motor movement and the moving part are not limited to the specific embodiments of the present invention.

[0056] In one possible implementation, the primary assembly of the motor is located in an armature magnetic isolation block 15 fixed to the armature backplate 14. The primary armature windings 2 are powered by three-phase AC, and these primary armature windings (A, B, C) are wound on the bottom of the primary core 1, which is fixed by a first non-magnetic retainer 51. The secondary assembly of the motor is located in a secondary magnetic isolation block 16 fixed to the electromagnet backplate 17. The secondary excitation winding 4 is excited by DC and alternately arranged to produce N and S poles. The secondary core 3 is fixed to the shank of the secondary core 3 by a second non-magnetic retainer 52. Only one motor is shown in this embodiment. It can be seen that, in order to generate a stable propulsive force, there is a certain longitudinal distance between the primary armature windings and the secondary excitation windings, which is closely related to the lengths of the primary and secondary armature windings. In this lateral flux linear synchronous motor structure that integrates traction and suspension guidance, the distance between two adjacent primary armature windings and the excitation winding is also very important. If the distance is too close, it will affect the magnetic field of the corresponding winding.

[0057] In one possible implementation, for a three-phase AC-powered traction and suspension guiding integrated transverse flux linear synchronous motor, the three-phase current flows from the power source 23 through leads (18a, 19a, 20a) into the coils (18, 19, and 20) of the three primary armature windings shown in the figure, and then flows out from leads (18b, 19b, 20b) connected to the grounding port 21, forming the power supply circuit of the primary armature windings via the loop lead 22.

[0058] The secondary excitation windings of the motor are powered by DC power supplies of the same magnitude but opposite direction. For a transverse flux linear synchronous motor integrating traction and levitation guidance with two pairs of magnetic poles, the current flowing from the DC power supply 31 flows through leads (24a, 26a) into the coils (24, 25, 26, 27) of the four sets of secondary excitation windings shown in the figure, and flows out through (25b, 27b) connected to the circuit leads 30 respectively, thus forming a closed loop. Coils (24, 25) and (26, 27) are connected through leads 28 and 29 respectively to provide a reverse series circuit.

[0059] In one possible implementation, the cooling system for the primary armature winding includes a cooling channel 38 installed in the armature magnetic shielding block 15. A cooling medium, such as gas or liquid, introduced at inlet 39 and flowing out from outlet 40 carries away the heat generated by the coils (18, 19, 20), thereby reducing the temperature rise of the motor. This cooling channel can also be used when the secondary excitation winding is wound around the bottom of the secondary core. Various cooling methods can be used depending on the position of the winding around the core, and are not limited to those described in this embodiment. Another cooling method for this motor is described below. Figure 10 .

[0060] In one possible implementation, the cooling system for the secondary excitation winding includes two cooling channels (32, 35) mounted in the secondary magnetic shielding block 16. In cooling channel 32, a cooling medium containing gas or liquid is introduced at inlet 33 and exited at outlet 34 to carry away heat generated by the coils (24, 25) respectively fixed to the secondary core 3, thereby allowing a larger current to be applied to the coils (24, 25) than in an excitation winding without a cooling channel. In cooling channel 35, a cooling medium containing gas or liquid enters at inlet 36 and exits at outlet 37 to carry away heat generated by the coils (26, 27) fixed to the secondary core 3. Alternatively, multiple cooling channels may be used, wherein the cooling channels may be constructed or machined on the surface of the armature backplate 14 or the electromagnet backplate 17, and are not limited to those described in this invention.

[0061] Reference Figure 11 , Figure 11A schematic diagram of the structure of a transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to a second embodiment of the present invention is shown. Figure 11 As shown, the arrangement of the primary armature winding 2 is similar to that in the first embodiment. The armature winding 2 is wound on the bottom 71 of the inverted primary core. Compared to the primary armature winding 2 in the first embodiment, the winding has a different thickness. The bottom of the primary armature winding 2 is approximately at the same height as the end faces of the two shanks (81, 91). The increased cross-section of the primary armature winding reduces leakage flux. Compared to the aforementioned first embodiment, the secondary excitation winding 4 is wound on the bottom 72 of the secondary core 3. The top of the secondary excitation winding is approximately at the same height as the end faces of the shanks (82, 92) of the secondary core. The primary core 1 and the secondary core 3 are respectively fixed by non-magnetic retainers (51, 52) located at their respective lower shanks. It can be seen that in this embodiment, the primary armature winding and the secondary excitation winding have a winding arrangement with approximately the same position.

[0062] Reference Figure 12 , Figure 12 A schematic diagram of the structure of a transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to a third embodiment of the present invention is shown. Figure 12 As shown, the inverted U-shaped primary core 1 is fixed to the first non-magnetic retainer 51, which is mounted on the bottom 71 of the primary core 1. The primary armature winding 2 is wound around the shank (81, 91) of the primary core. The secondary excitation winding 4 is wound around the bottom 72 of the secondary core 3. The secondary core 3 is fixed together by a longitudinally extending second non-magnetic retainer 52, the width of which can be varied according to different application scenarios. The cross-sectional area of ​​the primary / secondary core shank can also be changed to improve levitation force and reduce magnetic leakage; however, the cross-sectional area of ​​the shank will increase the weight of the electromagnet core.

[0063] Reference Figure 13 , Figure 13 A schematic diagram of the structure of a transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to a fourth embodiment of the present invention is shown. Figure 13As shown, the primary assembly of the motor includes a primary core 1 made of U-shaped silicon steel sheets, a primary armature winding 2, and a first non-magnetic fixing frame 515. The armature winding 2 is wound on the shanks (81, 91) on both sides of the U-shaped primary core. The primary armature winding 2 can also be wound on the bottom 71 at the middle position of the primary core. The secondary assembly of the motor includes a secondary core 3 made of U-shaped silicon steel sheets, a secondary excitation winding 4, and a second non-magnetic fixing frame 52. The secondary excitation winding is a permanent magnet, which is mounted on the shanks (82, 92) on both sides of the secondary core. The primary core 1 and the secondary core 3 are fixed by the non-magnetic fixing frames (51, 52), and there is an air gap 6 between the primary and secondary assemblies. The traveling wave magnetic field generated by the primary armature winding 2, powered by three-phase AC, and the magnetic field generated by the radially magnetized permanent magnet interact to generate thrust, traction motor along... Figure 2 The movement is in the direction indicated by the middle arrow d. The magnetic circuit formed by the permanent magnet and the (primary and secondary) iron cores can provide levitation and guiding forces for the motor. The principle is the same as in other embodiments, and will not be repeated here.

[0064] Reference Figure 14 , Figure 14 A schematic diagram of the structure of a transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to a fifth embodiment of the present invention is shown. Figure 14 As shown, with Figure 13 The embodiment shown differs in that the permanent magnet, serving as the secondary excitation winding 4, is installed inside the yoke of the U-shaped secondary core 3, with the magnetization direction of the permanent magnet perpendicular to the direction of train movement. This installation method provides a better working environment for the permanent magnet and improves its operational reliability. Compared to the first embodiment, the winding and permanent magnet arrangement in this embodiment allows the motor to achieve integrated traction, levitation, and guidance functions. Figure 1 The arrangement of ) is equivalent.

[0065] Reference Figure 15 , Figure 15 A schematic diagram of the structure of a transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to a sixth embodiment of the present invention is shown. Figure 15As shown, the primary assembly of the motor includes a U-shaped primary core 1 with a downward opening and a primary armature winding 2 powered by three-phase AC and wound on the shanks (81, 91) on both sides of the primary core 1. The secondary assembly of the motor includes a U-shaped secondary core 3 with an upward opening and a secondary excitation winding, wherein the secondary excitation winding includes a permanent magnet portion 41 mounted on the shanks (82, 92) on both sides of the secondary core 3 and a winding portion 42 wound on the shanks (82, 92) on both sides of the secondary core. The primary armature winding 1 is powered by three-phase AC, the permanent magnet portion 41 is made of neodymium iron boron, and the winding portion 42 is powered by direct current. An air gap 6 exists between the primary and secondary assemblies. The traveling wave magnetic field generated by the primary armature winding and the magnetic field generated by the secondary magnetic poles interact to generate a traction force. The levitation force formed by the permanent magnet section 41 and the primary iron core serves as the main levitation force of the motor, while the winding section 42, after DC excitation, generates an attractive force between the electromagnet and the primary iron core, serving as an adjustable levitation force for the motor. When the primary and / or secondary components experience lateral displacement due to external factors, in addition to the guiding force provided by the magnetic circuit formed by the permanent magnet and the (primary and secondary) iron cores, the guiding force can also be adjusted through the winding section 42. This hybrid-excitation U-shaped traction and levitation guidance integrated lateral flux linear synchronous motor can optimize the motor's levitation and guidance performance, enhance the motor's anti-interference capability, and thus improve the train's operational safety. Besides being installed on the upper part of the secondary iron core as described above, the permanent magnet section 41 can also be installed in a manner similar to... Figure 14 The secondary core shown is installed internally, but it can also be installed on the shanks on both sides of the secondary core. That is, the installation method of the permanent magnet portion is not limited to the specific embodiments of this invention.

[0066] Reference Figure 16 , Figure 16 A schematic diagram of the structure of a transverse magnetic flux linear synchronous motor integrating traction and suspension guidance according to a seventh embodiment of the present invention is shown. Figure 16 As shown, the winding portion 42 in the primary armature winding 2 and the secondary excitation winding are connected to... Figure 15The installation method is the same in the illustrated embodiment. Specifically, it is installed on the handles on both sides of the primary iron core 1 and the secondary iron core 3 of the U-shaped structure, respectively. In this embodiment, the permanent magnet part 41 in the secondary excitation winding adopts a magnet-focusing structure. Permanent magnets with opposite polarities are installed opposite each other in the direction of motor operation. The magnetic flux generated between adjacent permanent magnets flows into the secondary iron core 3 between the permanent magnets. After "magnetization", it enters the primary iron core 1 through the air gap. This installation method of permanent magnets increases the air gap magnetic flux density of the motor, increases the thrust density of the motor, and improves the traction performance of the motor. Similar to the principle of other embodiments, this arrangement can provide traction force, levitation force, and guiding force for motor operation. The winding part 42 is powered by DC power, which can adjust the levitation force and guiding force.

[0067] In summary, the lateral magnetic flux linear synchronous motor integrating traction and levitation guidance described in this embodiment of the invention, when applied in maglev trains, can provide traction, levitation, and guidance forces for the operation of maglev trains, realizing the integration of traction, levitation, and guidance functions. Using the motor based on this invention simplifies the maglev system of maglev trains, thus reducing the weight of the maglev system, lowering the installation difficulty of the maglev system, improving the operational reliability of maglev trains, increasing the efficiency and traction of the motor, and enhancing the operating quality and efficiency of maglev trains.

[0068] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A transverse magnetic flux linear synchronous motor integrating traction and suspension guidance, characterized in that: The motor includes a primary component and a secondary component that are spatially opposed to each other along the direction of movement of the target mounting component where the motor is located. The primary component includes a primary iron core (1), a primary armature winding (2), and a first non-magnetic fixing frame (51). The primary armature winding (2) is disposed on the primary iron core (1) and is fixed by the first non-magnetic fixing frame (51). The secondary component includes a secondary core (3), a secondary excitation winding (4), and a second non-magnetic fixing frame (52). The secondary excitation winding (4) is disposed on the secondary core (3) and fixed by the second non-magnetic fixing frame (52). The primary component and the secondary component are both encapsulated in an armature magnetic shielding block (15) and a secondary magnetic shielding block (16), and there is an air gap (6) between the primary component and the secondary component. The primary iron core (1) and secondary iron core (3) of the two U-shaped structures placed opposite each other form a transverse magnetic flux path perpendicular to the direction of motion of the maglev train. This transverse magnetic flux path passes through the primary iron core (1), the secondary iron core (3) and the air gap to form a closed magnetic circuit and is perpendicular to the direction of the traveling wave magnetic field of the motor. When the secondary excitation winding is DC excitation, the traveling wave magnetic field formed by the AC-powered primary armature winding and the secondary transverse magnetic pole magnetic field formed by the DC-powered secondary excitation winding interact to generate traction force. When the secondary excitation winding adopts a permanent magnet or hybrid excitation structure, the traveling wave magnetic field formed by the primary armature winding and the permanent magnet interact to generate traction force. The adjacent secondary excitation windings are connected in reverse series to form alternating excitation poles; When the primary and / or secondary components are laterally displaced by external disturbances, a guiding force opposite to the lateral displacement direction will be generated between the iron teeth of the spatially opposed primary and secondary iron cores under the action of the air gap magnetic field. This guiding force restores the displaced primary and / or secondary components to their initial positions. When the secondary excitation winding adopts a hybrid excitation structure, the interaction between the motor armature magnetic field and the excitation magnetic field generated by the secondary permanent magnet produces a traction force to drive the motor to achieve linear motion. The primary and secondary components of the motor attract each other under the action of the air gap magnetic field, generating a levitation force, enabling the motor to achieve frictionless motion along the direction of motion.

2. The lateral magnetic flux linear synchronous motor integrating traction and suspension guidance according to claim 1, characterized in that, The armature magnetic shielding block (15) and / or the secondary magnetic shielding block (16) are made of epoxy resin.

3. The lateral magnetic flux linear synchronous motor integrating traction and suspension guidance according to claim 1, characterized in that, Observing along the moving direction of the target mounting component where the motor is located, both the primary component and the secondary component include multiple groups, wherein each group of the primary component includes M primary iron cores (1), and each group of the secondary component includes N secondary iron cores (3), where M and N are both ≥1.

4. The lateral magnetic flux linear synchronous motor integrating traction and suspension guidance according to claim 1, wherein the secondary iron core (3) is equipped with a DC excitation winding and / or a permanent magnet.

5. The lateral magnetic flux linear synchronous motor integrating traction and suspension guidance according to claim 1, characterized in that, The primary armature winding (2) and / or the secondary excitation winding (4) are toroidal concentrated windings.

6. The lateral magnetic flux linear synchronous motor integrating traction and suspension guidance according to claim 5, characterized in that, The primary core (1) and / or the secondary core (3) are made of stacked silicon steel sheets with a U-shaped cross-section.

7. The lateral magnetic flux linear synchronous motor integrating traction and suspension guidance according to claim 1, characterized in that, The primary component and / or the secondary component are movably disposed on the motor.

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