CN117198679A - Suspension magnet, train and control method of suspension magnet - Google Patents
Suspension magnet, train and control method of suspension magnet Download PDFInfo
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- CN117198679A CN117198679A CN202311198325.0A CN202311198325A CN117198679A CN 117198679 A CN117198679 A CN 117198679A CN 202311198325 A CN202311198325 A CN 202311198325A CN 117198679 A CN117198679 A CN 117198679A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000725 suspension Substances 0.000 title claims description 14
- 238000005339 levitation Methods 0.000 claims abstract description 86
- 238000002955 isolation Methods 0.000 claims abstract description 48
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000004907 flux Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The application discloses a levitation magnet, a train and a control method of the levitation magnet, and relates to the field of magnetic levitation, wherein the levitation magnet comprises a plurality of electromagnetic modules and at least one permanent magnet module, the electromagnetic modules are arranged at the upper parts of the permanent magnet modules, the electromagnetic modules comprise iron cores and coils, and the coils are wound on the iron cores; the permanent magnet module comprises a magnet yoke, a permanent magnet and an isolation module, wherein the lower part of the isolation module is attached to the upper part of the permanent magnet, a cavity for accommodating the isolation module is formed in the upper part of the magnet yoke, a cavity for accommodating the permanent magnet is formed in the lower part of the magnet yoke, an electromagnetic magnetic circuit generated by the electromagnetic module passes through the isolation module, and the electromagnetic module and the permanent magnet module are used for generating electromagnetic force to enable a train to suspend on a track. Through having set up isolation module, electromagnetic circuit passes through isolation module transmission, does not pass through the permanent magnet, does not interfere each other between electromagnetic module and the permanent magnet module, and control is more convenient.
Description
Technical Field
The application relates to the field of magnetic levitation, in particular to a levitation magnet, a train and a control method of the levitation magnet.
Background
The highest running speed of the domestic running high-speed magnetic levitation train reaches 503km/h, the super-high-speed running requires that the magnetic levitation train has higher levitation capacity, the current design speed of the high-speed magnetic levitation train is 600 km per hour, the normally-conductive levitation electromagnet can meet the running requirement, and along with the further improvement of the speed, the vertical dynamic load of the vehicle is aggravated, and the higher requirement on the bearing capacity is provided. The levitation magnet in the related art comprises an electromagnetic circuit and a permanent magnetic circuit, the levitation capacity is improved by increasing the current in the electromagnetic circuit according to actual requirements, but the increased current can cause serious heating, the technical problem of risk of burning exists, and meanwhile the permanent magnetic circuit influences the electromagnetic circuit, so that the adjustment is inconvenient.
Disclosure of Invention
The application aims to provide a levitation magnet, a train and a control method of the levitation magnet.
In order to solve the technical problems, the application provides a suspension magnet, which comprises a plurality of electromagnetic modules and at least one permanent magnet module;
the electromagnetic module is arranged at the upper part of the permanent magnet module and comprises an iron core and a coil, and the coil is wound on the iron core;
the permanent magnet module comprises a magnet yoke, a permanent magnet and an isolation module, wherein the lower part of the isolation module is attached to the upper part of the permanent magnet, a cavity for accommodating the isolation module is formed in the upper part of the magnet yoke, a cavity for accommodating the permanent magnet is formed in the lower part of the magnet yoke, an electromagnetic circuit generated by the electromagnetic module passes through the isolation module, and the electromagnetic module and the permanent magnet module are used for generating electromagnetic force to enable a train to suspend on the track.
In another aspect, the isolation module is one of plastic, ceramic, nylon, aluminum alloy, or titanium alloy.
On the other hand, the magnetic poles of the permanent magnets are longitudinally arranged along the track, and when the number of the permanent magnet modules is greater than one, the N pole directions of the permanent magnets in the two adjacent permanent magnet modules are opposite.
On the other hand, the electromagnetic module comprises an S-pole electromagnet and an N-pole electromagnet;
and two ends of the S-pole electromagnet are respectively attached to the upper parts of the magnetic yokes close to the S-pole side of the permanent magnet, and two ends of the N-pole electromagnet are respectively attached to the upper parts of the magnetic yokes close to the N-pole side of the permanent magnet.
In another aspect, the upper portion of the yoke is flush with the upper portion of the isolation module and the lower portion of the yoke is flush with the lower portion of the permanent magnet.
In another aspect, the width of the permanent magnet is greater than the width of the isolation module.
In order to solve the technical problem, the application also provides a train which comprises the suspension magnet.
In order to solve the technical problem, the application also provides a control method of the levitation magnet, wherein the levitation magnet is the levitation magnet, and the control method of the levitation magnet comprises the following steps:
determining a gap between the levitation magnet and the track;
when the gap is larger than the rated gap, controlling the magnetic field generated by the electromagnetic module in the suspension magnet to be increased;
and when the gap is smaller than the rated gap, controlling the magnetic field generated by the electromagnetic module in the suspension magnet to be reduced.
In another aspect, determining the gap between the levitation magnet and the track includes:
and determining the gap between the levitation magnet and the track according to data acquired by a gap sensor arranged on the levitation magnet.
In another aspect, controlling the increase in the magnetic field generated by the levitation magnet includes:
controlling the current output to the electromagnetic module to increase, wherein the direction of a magnetic field generated by the current is controlled to be the same as the direction of a magnetic field generated by a permanent magnet module in the levitation magnet;
controlling the reduction of the magnetic field generated by the levitation magnet, comprising:
controlling the current output to the electromagnetic module to increase, and controlling the direction of a magnetic field generated by the current to be opposite to the direction of a magnetic field generated by a permanent magnet module in the levitation magnet;
or controlling the current output to the electromagnetic module to be reduced, and controlling the direction of the magnetic field generated by the current to be the same as the direction of the magnetic field generated by the permanent magnet module in the levitation magnet.
The application discloses a levitation magnet, a train and a control method of the levitation magnet, and relates to the field of magnetic levitation, wherein the levitation magnet comprises a plurality of electromagnetic modules and at least one permanent magnet module, the electromagnetic modules are arranged at the upper parts of the permanent magnet modules, the electromagnetic modules comprise iron cores and coils, and the coils are wound on the iron cores; the permanent magnet module comprises a magnet yoke, a permanent magnet and an isolation module, wherein the lower part of the isolation module is attached to the upper part of the permanent magnet, a cavity for accommodating the isolation module is formed in the upper part of the magnet yoke, a cavity for accommodating the permanent magnet is formed in the lower part of the magnet yoke, an electromagnetic magnetic circuit generated by the electromagnetic module passes through the isolation module, and the electromagnetic module and the permanent magnet module are used for generating electromagnetic force to enable a train to suspend on a track. Through having set up isolation module, electromagnetic circuit passes through isolation module transmission, does not pass through the permanent magnet, does not interfere each other between electromagnetic module and the permanent magnet module, and control is more convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required in the prior art and the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a levitation magnet according to the present application;
fig. 2 is a schematic structural diagram of a magnetic circuit of a levitation magnet according to the present application;
FIG. 3 is a schematic diagram of a magnetic circuit of another levitation magnet according to the present application;
fig. 4 is a schematic structural view of a magnetic circuit of a levitation magnet of the related art;
FIG. 5 is a flow chart of a method for controlling a levitation magnet according to the present application;
fig. 6 is a schematic structural diagram of a control loop of a levitation magnet according to the present application.
Detailed Description
The application provides a levitation magnet, a train and a control method of the levitation magnet, wherein an isolation module is arranged, an electromagnetic circuit is transmitted through the isolation module and does not pass through a permanent magnet, the electromagnetic module and the permanent magnet module are not mutually interfered, and the control is more convenient.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Fig. 1 is a schematic structural diagram of a levitation magnet according to the present application, where the levitation magnet 1 includes a plurality of electromagnetic modules 3 and at least one permanent magnet module 10;
the electromagnetic module 3 is arranged at the upper part of the permanent magnet module 10, the electromagnetic module 3 comprises an iron core 4 and a coil 5, and the coil 5 is wound on the iron core 4;
the permanent magnet module 10 comprises a magnet yoke 6, a permanent magnet 7 and an isolation module 8, wherein the lower part of the isolation module 8 is attached to the upper part of the permanent magnet 7, a cavity for accommodating the isolation module 8 is formed in the upper part of the magnet yoke 6, a cavity for accommodating the permanent magnet 7 is formed in the lower part of the magnet yoke 6, an electromagnetic circuit generated by the electromagnetic module 3 passes through the isolation module 8, and the electromagnetic module 3 and the permanent magnet module 10 are used for generating electromagnetic force to realize that a train is suspended on the track 2.
Fig. 2 is a schematic structural diagram of a magnetic circuit of a levitation magnet according to the present application; FIG. 3 is a schematic diagram of a magnetic circuit of another levitation magnet according to the present application; fig. 4 is a schematic structural view of a magnetic circuit of a levitation magnet of the related art;
the solid line represents the permanent magnetic circuit, the two-dot chain line represents the electromagnetic circuit, and as can be understood from fig. 4, the electromagnetic circuit in the related art must pass through the permanent magnet 7, and then the permanent magnet 7 will affect the electromagnetic circuit when adjusting the electromagnetic circuit of the electromagnetic module 10, so that if the current is increased in the center of the related art, heat generation will be serious.
The application is provided with the isolation module 8, which is equivalent to air for the magnetic circuit, the electromagnetic magnetic circuit can be transmitted through the isolation module 8 without passing through the permanent magnet 7, the magnetic resistance of the magnetic circuit loop is reduced, the electromagnetic regulation capacity is improved, the electromagnetic dynamic response capacity is enhanced, and the suction risk is greatly reduced. Since the electromagnetic circuit does not pass through the permanent magnet 7, the width of the permanent magnet 7 can be increased, the permanent magnetic flux is increased, and the levitation capability is improved.
Specifically, fig. 2 is a schematic structural diagram of the magnetic circuit of the levitation magnet 1 when the electromagnetic force is enhanced, and fig. 3 is a schematic structural diagram of the magnetic circuit of the levitation magnet 1 when the electromagnetic force is weakened, and in the actual control process, the electromagnetic force of the electromagnetic circuit can be adjusted by adjusting the direction of the current of the electromagnetic circuit.
The application provides a suspension magnet, which relates to the field of magnetic suspension and comprises a plurality of electromagnetic modules and at least one permanent magnet module, wherein the electromagnetic modules are arranged on the upper parts of the permanent magnet modules, each electromagnetic module comprises an iron core and a coil, and the coil is wound on the iron core; the permanent magnet module comprises a magnet yoke, a permanent magnet and an isolation module, wherein the lower part of the isolation module is attached to the upper part of the permanent magnet, a cavity for accommodating the isolation module is formed in the upper part of the magnet yoke, a cavity for accommodating the permanent magnet is formed in the lower part of the magnet yoke, an electromagnetic magnetic circuit generated by the electromagnetic module passes through the isolation module, and the electromagnetic module and the permanent magnet module are used for generating electromagnetic force to enable a train to suspend on a track. Through having set up isolation module, electromagnetic circuit passes through isolation module transmission, does not pass through the permanent magnet, does not interfere each other between electromagnetic module and the permanent magnet module, and control is more convenient.
Based on the above embodiments:
the electromagnetic magnetic path generated by the electromagnetic module 10 starts from the current iron core 4 and returns to the current iron core 4 through the air gap 9 between the track 2 and the iron core 4, the track, the first air gap 9, the iron core 4 adjacent to the current iron core 4, the magnetic yoke 6, the isolation module 8 and the magnetic yoke 6.
For electromagnetic circuits, there is a path from the core 4 of the electromagnetic module 10, through the air gap 9, the track, the air gap 9, the core 4 of the adjacent electromagnetic module 10, the yoke 6, the isolation module 8, the yoke 6, and back to the core 4 of the original electromagnetic module 10. The electromagnetic circuit is arranged on the iron core 4, the air gap 9 and the track common magnetic circuit of the electromagnetic module 10, and the total magnetic flux of the position can be changed by the electromagnetic flux.
The first permanent magnetic circuit generated by the permanent magnet module 3 starts from the N pole of the permanent magnet 7, passes through the iron core 4, the magnetic yoke 6, the air gap 9, the track, the air gap 9, the iron core 4 and the magnetic yoke 6 which are connected with the S pole of the permanent magnet 7 and returns to the S pole of the permanent magnet 7.
The second permanent magnet generated by the permanent magnet module 3 starts from the N pole of the permanent magnet 7, passes through the isolation module 8 and the magnetic yoke 6, and returns to the S pole of the permanent magnet 7.
For a permanent magnet magnetic circuit, two paths exist, wherein one path starts from the N pole of the permanent magnet 7, passes through the magnetic yoke 6 and the isolation module 8, and returns the magnetic yoke 6 to the S pole of the permanent magnet 7; the other path is from the N pole of the permanent magnet 7, through the yoke 6, the core 4, the air gap 9, the track, the air gap 9, the iron of the adjacent electromagnetic module 10, and the yoke 6 back to the S pole of the permanent magnet 7.
In some embodiments, the isolation module 8 is one of plastic, ceramic, nylon, aluminum alloy, or titanium alloy.
It will be appreciated that the isolation module needs to be magnetically non-conductive, and that an alloy material such as an aluminum alloy or a titanium alloy may be used to enhance stability.
In some embodiments, the poles of the permanent magnets 7 are arranged longitudinally along the track 2, and when the number of permanent magnet modules 3 is greater than one, the N-poles of the permanent magnets 7 in two adjacent permanent magnet modules 3 are opposite in direction.
Along the rail direction, each permanent magnet is arranged in turn in a manner of N level, S level, N level and S level.
In some embodiments, the electromagnetic module 10 includes an S-pole electromagnet and an N-pole electromagnet;
the two ends of the S-pole electromagnet are respectively attached to the upper part of the magnet yoke 6 near the S-pole side of the permanent magnet 7, and the two ends of the N-pole electromagnet are respectively attached to the upper part of the magnet yoke 6 near the N-pole side of the permanent magnet 7.
In some embodiments, the upper portion of the yoke 6 is flush with the upper portion of the isolation module 8, and the lower portion of the yoke 6 is flush with the lower portion of the permanent magnet 7.
In some embodiments, the width of the permanent magnets 7 is greater than the width of the isolation module 8.
The permanent magnetic circuit makes the electromagnetic modules 10 alternately arranged with the N pole and the S pole, i.e. the polarities of the two adjacent electromagnetic modules 10 are opposite. Meanwhile, the permanent magnets 7 are alternately arranged with the N pole and the S pole.
Since the electromagnetic circuit does not pass through the permanent magnet 7, the width of the permanent magnet 7 can be increased, the permanent magnetic flux is increased, and the levitation capability is improved. It will be appreciated that the magnetic field generated by the permanent magnet 7 is fixed and can only be achieved by adjusting the current output to the electromagnetic module 10 during adjustment.
The application also provides a train comprising the suspension magnet 1.
The train provided by the application is described with reference to the above embodiments, and will not be described herein.
Fig. 5 is a flowchart of a control method of a levitation magnet according to the present application, where the control method of a levitation magnet is applied to the controller in the train, and includes:
s1: determining a gap between the levitation magnet 1 and the track;
s2: when the gap is larger than the rated gap, the magnetic field generated by the electromagnetic module 10 in the suspension magnet 1 is controlled to be increased;
s3: when the gap is smaller than the rated gap, the magnetic field generated by the electromagnetic module 10 in the levitation magnet 1 is controlled to decrease.
The gap sensor is arranged on the magnet, the sensor can detect the gap between the magnet and the track, the gap value is transmitted to the controller, and the controller outputs current to the magnet according to control logic to change the magnetic force, so that the magnet is ensured to stably suspend. The control output loop of the hybrid magnet is different from the penetrating electromagnetic magnet to a certain extent. For pure electromagnetic magnets, only a unidirectional output loop is needed, and when the gap becomes large and the electromagnetic force needs to be increased, the current of the electromagnet is increased; conversely, when the gap is reduced and the electromagnetic force needs to be reduced, the current of the electromagnet is reduced, and a rated current (20-30A) exists. For a permanent magnet electromagnetic hybrid magnet, a bi-directional output circuit is required because the permanent magnet field is used to provide magnetic force and the electromagnetic field is used to adjust the magnitude of the magnetic force. When the gap is enlarged and the magnetic force is required to be increased, the current of the magnet is increased and the whole magnetic flux is increased; conversely, when the gap is reduced and the electromagnetic force needs to be reduced, the current is not only reduced, but is reversed, and the current is increased, so that the whole magnetic flux is reduced, and the rated current is small (0-10A). Specifically, the gap is the air gap 9 between the iron core 4 and the track 2.
In some embodiments, determining the gap between the levitation magnet 1 and the track 2 comprises:
the gap between the levitation magnet 1 and the track 2 is determined based on data acquired by a gap sensor provided on the levitation magnet 1.
In some embodiments, controlling the increase of the magnetic field generated by the electromagnetic module 10 in the levitation magnet 1 comprises:
the current output to the electromagnetic module 10 is controlled to increase, and the direction of the magnetic field generated by the current is the same as the direction of the magnetic field generated by the permanent magnet module 3 in the levitation magnet 1.
Controlling the reduction of the magnetic field generated by the electromagnetic module 10 in the levitation magnet 1 comprises:
the current output to the electromagnetic module 10 is controlled to be increased, and the direction of the magnetic field generated by the control current is opposite to that of the magnetic field generated by the permanent magnet module 3 in the levitation magnet 1;
or the current output to the electromagnetic module 10 is controlled to be reduced, and the direction of the magnetic field generated by the control current is the same as the direction of the magnetic field generated by the permanent magnet module 3 in the levitation magnet 1.
Fig. 6 is a schematic structural diagram of a control circuit of a levitation magnet 1 according to the present application, in which switching tubes T1, T2, T3 and T4 are provided, and by controlling the on and off of the four switching tubes, the direction of the current output to the electromagnet is changed, so as to change the electromagnetic force generated by the electromagnetic module 10. Vs is the power supply, cf is the filter capacitor, is the current, V0 is the voltage across the electromagnet, and the electromagnet is the electromagnetic module 10.
When a larger electromagnetic force is required, the electromagnetic field in the iron core 4 is the same as the permanent magnetic field in direction, and as shown in fig. 2, the magnetic field in the air gap 9 is enhanced by increasing the current, thereby improving the electromagnetic force. When a smaller electromagnetic force is required, the electromagnetic field in the iron core 4 is opposite to the permanent magnetic field, and the electromagnetic force is reduced by increasing the current to weaken the magnetic field in the air gap 9.
In operation, the permanent magnetic flux generated by the permanent magnet 7 causes attractive force, i.e. levitation force, between the levitation magnet 1 and the track. However, the permanent magnetic field is uncontrollable, and dynamic balance cannot be realized between the permanent magnetic field and the permanent magnetic field, so that the dynamic stable suspension is ensured by carrying out real-time adjustment through electromagnetic magnetic flux. The power supply of the levitation magnet 1 can realize bidirectional power supply, namely current forward and reverse. When the air gap 9 is larger than the rated gap, the electromagnetic force needs to be increased, and the electromagnetic flux is enhanced to the permanent magnetic flux by controlling the current; when the air gap 9 is smaller than the rated gap, the electromagnetic force needs to be reduced, and the electromagnetic flux weakens the permanent magnetic flux by controlling the current.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A levitation magnet characterized by a plurality of electromagnetic modules and at least one permanent magnet module;
the electromagnetic module is arranged at the upper part of the permanent magnet module and comprises an iron core and a coil, and the coil is wound on the iron core;
the permanent magnet module comprises a magnet yoke, a permanent magnet and an isolation module, wherein the lower part of the isolation module is attached to the upper part of the permanent magnet, a cavity for accommodating the isolation module is formed in the upper part of the magnet yoke, a cavity for accommodating the permanent magnet is formed in the lower part of the magnet yoke, an electromagnetic circuit generated by the electromagnetic module passes through the isolation module, and the electromagnetic module and the permanent magnet module are used for generating electromagnetic force to enable a train to suspend on the track.
2. The levitation magnet of claim 1, wherein the isolation module is one of plastic, ceramic, nylon, aluminum alloy, or titanium alloy.
3. A levitation magnet as defined in claim 1, wherein the poles of the permanent magnets are disposed longitudinally along the track, and wherein the N poles of the permanent magnets in two adjacent permanent magnet modules are opposite when the number of permanent magnet modules is greater than one.
4. A levitation magnet as defined in claim 3, wherein the electromagnetic module comprises an S-pole electromagnet and an N-pole electromagnet;
and two ends of the S-pole electromagnet are respectively attached to the upper parts of the magnetic yokes close to the S-pole side of the permanent magnet, and two ends of the N-pole electromagnet are respectively attached to the upper parts of the magnetic yokes close to the N-pole side of the permanent magnet.
5. The levitation magnet of claim 1, wherein an upper portion of the yoke is flush with an upper portion of the isolation module and a lower portion of the yoke is flush with a lower portion of the permanent magnet.
6. A levitation magnet as defined in any one of claims 1 to 5, wherein the width of the permanent magnet is greater than the width of the isolation module.
7. A train comprising a levitation magnet as defined in any of claims 1 to 6.
8. A method of controlling a levitation magnet according to any one of claims 1 to 6, comprising:
determining a gap between the levitation magnet and the track;
when the gap is larger than the rated gap, controlling the magnetic field generated by the suspension magnet to be increased;
and when the gap is smaller than the rated gap, controlling the magnetic field generated by the levitation magnet to be reduced.
9. The method of controlling a levitation magnet of claim 8, wherein determining a gap between the levitation magnet and the track comprises:
and determining the gap between the levitation magnet and the track according to data acquired by a gap sensor arranged on the levitation magnet.
10. A method of controlling a levitation magnet according to claim 8 or 9, wherein controlling the increase in the magnetic field generated by the levitation magnet comprises:
controlling the current output to the electromagnetic module to increase, wherein the direction of a magnetic field generated by the current is controlled to be the same as the direction of a magnetic field generated by a permanent magnet module in the levitation magnet;
controlling the reduction of the magnetic field generated by the levitation magnet, comprising:
controlling the current output to the electromagnetic module to increase, and controlling the direction of a magnetic field generated by the current to be opposite to the direction of a magnetic field generated by a permanent magnet module in the levitation magnet;
or controlling the current output to the electromagnetic module to be reduced, and controlling the direction of the magnetic field generated by the current to be the same as the direction of the magnetic field generated by the permanent magnet module in the levitation magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311198325.0A CN117198679A (en) | 2023-09-18 | 2023-09-18 | Suspension magnet, train and control method of suspension magnet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311198325.0A CN117198679A (en) | 2023-09-18 | 2023-09-18 | Suspension magnet, train and control method of suspension magnet |
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| CN117198679A true CN117198679A (en) | 2023-12-08 |
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| CN202311198325.0A Pending CN117198679A (en) | 2023-09-18 | 2023-09-18 | Suspension magnet, train and control method of suspension magnet |
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