CN106828183B - Linear power generation device, vehicle-mounted power supply system and maglev train - Google Patents
Linear power generation device, vehicle-mounted power supply system and maglev train Download PDFInfo
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- CN106828183B CN106828183B CN201710219554.4A CN201710219554A CN106828183B CN 106828183 B CN106828183 B CN 106828183B CN 201710219554 A CN201710219554 A CN 201710219554A CN 106828183 B CN106828183 B CN 106828183B
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- 238000010248 power generation Methods 0.000 title claims abstract description 62
- 230000005291 magnetic effect Effects 0.000 claims abstract description 55
- 238000005339 levitation Methods 0.000 claims abstract description 37
- 230000003993 interaction Effects 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- 238000004804 winding Methods 0.000 claims description 17
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 abstract description 7
- 239000000725 suspension Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/03—Electric propulsion by linear motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
- B60L1/04—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits fed by the power supply line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/14—Supplying electric power to auxiliary equipment of vehicles to electric lighting circuits
- B60L1/16—Supplying electric power to auxiliary equipment of vehicles to electric lighting circuits fed by the power supply line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/10—Combination of electric propulsion and magnetic suspension or levitation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/10—Electrical machine types
- B60L2220/12—Induction machines
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
The invention relates to a linear power generation device for a magnetic levitation train, a vehicle-mounted power supply system and the magnetic levitation train, which comprise a linear motor primary component paved along a train running track and a linear motor primary component, wherein the linear motor primary component is used for generating a primary travelling wave magnetic field; and the vehicle-mounted secondary power generation assembly is arranged on the magnetic levitation train, generates an induced voltage through interaction with the primary traveling wave magnetic field, and supplies power to vehicle-mounted electric equipment on the magnetic levitation train by utilizing the induced voltage. The invention realizes complete non-contact between the vehicle and the ground through the non-contact linear power generation device; the weight of the vehicle-mounted equipment can be effectively reduced and the effective load of the whole vehicle can be improved without additionally paving a linear induction motor for propulsion; the vehicle-mounted device is powered and can provide forward propulsion for the magnetic levitation vehicle; and the normal running of power distribution is ensured by adopting a vehicle-mounted power supply mode of combining the linear power generation device and the storage battery.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a linear power generation device for a magnetic levitation train, a vehicle-mounted power supply system and the magnetic levitation train with the vehicle-mounted power supply system.
Background
The magnetic suspension train is a non-contact rail-bearing traffic tool without wheels on land, and adopts electromagnetic suspension and electric traction. The train can be divided into two main types of normally-conductive suction type suspension and superconductive repulsive type suspension according to different electromagnetic suspension principles.
Linear induction motor driving schemes are adopted in the existing maglev vehicle systems. The linear induction motor has the advantages of simple structure, low cost, simple and reliable control system and the like, but the suspension capacity and the bearing capacity of the linear induction motor are smaller in view of the application characteristics of the current magnetic levitation vehicle, so that the weight of vehicle-mounted equipment is required to be reduced as much as possible, and the effective load of the whole vehicle is improved. However, no good technical scheme is available at present to solve the technical problems of reducing the weight of the vehicle-mounted equipment and improving the effective load of the whole vehicle.
Therefore, it is necessary to provide a novel power supply method and device aiming at the characteristics of the current vehicle-mounted energy supply mode of the magnetic levitation train, so that the weight of vehicle-mounted equipment is effectively reduced, and the effective load of the whole vehicle is improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a linear power generation device for a magnetic levitation train, a vehicle-mounted power supply system and the magnetic levitation train with the vehicle-mounted power supply system.
The technical scheme provided by the invention is as follows:
in one aspect, there is provided a linear power generation device for a magnetic levitation train, comprising:
a linear motor primary assembly laid along the train running track for generating a primary travelling wave magnetic field;
at least one set of on-board secondary power generation components disposed on the magnetic levitation train that generates an induced voltage through interaction with the primary traveling wave magnetic field and utilizes the induced voltage to power on-board electrical devices on the magnetic levitation train.
Preferably, the linear motor primary assembly comprises a primary iron core and a primary winding, wherein the primary iron core is paved along a train running track and provided with a plurality of toothed parts, the toothed parts are uniformly arranged on the primary iron core at intervals, and one primary winding is arranged between every two adjacent toothed parts.
Preferably, the vehicle-mounted secondary power generation assembly comprises a secondary back iron which is arranged corresponding to the primary iron core; the lower end face of the secondary back iron is connected with at least one group of secondary three-phase power generation windings; each secondary three-phase generating winding comprises a B phase, a C phase and an A phase which are sequentially and uniformly arranged at intervals along the running direction of the train, and the B phase, the C phase and the A phase are oppositely arranged on the toothed part.
Preferably, the device further comprises a ground three-phase frequency converter for connecting each primary winding and inputting three-phase alternating currents with corresponding mutual differences of 120 degrees, wherein the three-phase alternating currents are used for generating the primary travelling wave magnetic field.
Preferably, a constant slip frequency fs is maintained between the output frequency of the ground three-phase frequency converter and the operating frequency of the on-board secondary power generation assembly, by which an induced voltage is generated in the on-board secondary power generation assembly.
Preferably, the device further comprises an inverter for supplying power to vehicle-mounted electric equipment on the magnetic levitation train after rectifying and inverting the induced voltage.
On the other hand, the vehicle-mounted power supply system for supplying power by utilizing the linear power generation device comprises rectifying and voltage stabilizing equipment, a power distribution cabinet, an inverter, direct current electric equipment and alternating current electric equipment which are arranged on the magnetic levitation train;
one end of the rectifying and voltage stabilizing equipment is connected with the linear power generation device, and the other end of the rectifying and voltage stabilizing equipment is connected with the power distribution cabinet and is used for receiving the induced voltage generated by the linear power generation device, rectifying and stabilizing the induced voltage and transmitting the rectified and stabilized induced voltage to the power distribution cabinet;
the power distribution cabinet is respectively connected with the direct current electric equipment and the inverter and is used for directly transmitting the rectified and stabilized induced voltage to the direct current electric equipment for use; or the voltage after rectification and voltage stabilization is transmitted to the inverter, converted by the inverter and transmitted to the alternating current electric equipment connected with the inverter, and the alternating current electric equipment is used by the alternating current electric equipment.
Preferably, the power distribution system further comprises a rechargeable storage battery pack connected with the power distribution cabinet and used for providing auxiliary power for the power distribution cabinet.
On the other hand, still provide a maglev train, it includes above-mentioned on-vehicle power supply system.
The technical scheme of the invention has the following technical effects:
1. the magnetic levitation vehicle adopts a non-contact linear power generation device, so that the vehicle and the ground are completely non-contact;
2. the linear power generation device and the linear induction motor for propulsion share a primary paved along a track, and the additional paving is not needed, so that the weight of vehicle-mounted equipment is effectively reduced, and the effective load of the whole vehicle is improved;
3. the linear power generation device can supply power for the vehicle-mounted equipment and can also provide forward propulsion for the magnetic levitation vehicle;
4. and a vehicle-mounted power supply mode of combining the linear power generation device and the storage battery is adopted, so that normal power distribution is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following discussion will discuss the embodiments or the drawings required in the description of the prior art, and it is obvious that the technical solutions described in connection with the drawings are only some embodiments of the present invention, and that other embodiments and drawings thereof can be obtained according to the embodiments shown in the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure and principle of a linear power generation device according to the first embodiment;
FIG. 2 is a graph of the output voltage of each phase in the on-board secondary power generation assembly described in embodiment two;
fig. 3 is a schematic structural diagram of a vehicle-mounted power supply system in the third embodiment.
Detailed Description
The following description of the embodiments of the present invention will be made in detail, but not necessarily with reference to the accompanying drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without the need for inventive faculty, are within the scope of the invention.
Aiming at the technical problems that the weight of vehicle-mounted equipment is reduced and the effective load of the whole vehicle is improved in the prior art, the invention provides a linear power generation device for a magnetic levitation train, a vehicle-mounted power supply system and a magnetic levitation train with the vehicle-mounted power supply system, which can effectively reduce the weight of the vehicle-mounted equipment and improve the effective load of the whole vehicle.
Embodiment one:
fig. 1 shows a schematic diagram of the structure and principle of a linear power generation device for a magnetic levitation train, which includes: a linear motor primary assembly 1 laid along a train running track for generating a primary traveling wave magnetic field;
the at least one group of vehicle-mounted secondary power generation assemblies 2 are arranged on the magnetic levitation train, generate induced voltage through interaction with the primary traveling wave magnetic field, and utilize the induced voltage to supply power for vehicle-mounted electric equipment on the magnetic levitation train, wherein the electric equipment comprises train illumination, an air conditioner, an air compressor, various system control circuits, electric vehicle doors, vehicle-mounted signals, communication equipment, a storage battery and the like, and meanwhile, an inverter (not shown) is also arranged for supplying power for the vehicle-mounted electric equipment on the magnetic levitation train after rectifying and inverting the induced voltage in order to meet the power utilization requirements of various electric equipment.
Preferably, the linear motor primary assembly 1 comprises a primary iron core 4 with a plurality of teeth 3 and a primary winding 5, wherein the primary iron core 4 is paved along a train running track, the teeth 3 are uniformly arranged on the primary iron core 4 at intervals, and a primary winding 5 is arranged between every two adjacent teeth. Further, the linear motor primary assembly 1 may be connected to a ground power supply device for supplying power in segments, and the power supply device is located beside a train running track, and the power supply device is preferably a ground three-phase frequency converter (not shown) which is used for connecting each primary winding and inputting a corresponding three-phase alternating current with 120 ° mutual difference (each current effective value is 1080A), and the three-phase alternating current is used for generating the primary travelling wave magnetic field, in this embodiment, the output frequency of the ground three-phase frequency converter is mainly determined by the running speed of the train, for example, the output frequency of the ground three-phase frequency converter may be preferably 35-45Hz, and particularly preferably, the output frequency of the ground three-phase frequency converter is 40Hz.
Secondly, the vehicle-mounted secondary power generation assembly 2 comprises a secondary back iron 6 which is arranged corresponding to the primary iron core 4; in this embodiment, the secondary back iron 6 adopts a composite structure composed of a conductive plate (copper or aluminum, etc.) and a ferromagnetic material (low carbon steel, etc.), so that the vehicle-mounted secondary is light in weight, and the effective load of the vehicle is increased; further, the lower end face of the secondary back iron 6 is connected with at least one group of secondary three-phase power generation windings 7; each secondary three-phase generating winding comprises a B phase, a C phase and an A phase which are sequentially and uniformly arranged at intervals along the running direction of the train (namely, the movement direction of the secondary movement speed V shown by an arrow in fig. 1), and the B phase, the C phase and the A phase are oppositely arranged to the toothed part.
For a linear asynchronous motor, the primary traveling wave magnetic field induces eddy currents in the vehicle-mounted secondary power generation assembly 2, and electromagnetic interaction between the secondary eddy currents and the primary traveling wave magnetic field generates forward propelling force, and meanwhile, the influence of normal magnetic attraction of the motor on a suspension system is eliminated. Further, a constant slip frequency fs needs to be maintained between the frequency of the motor synchronization speed Vs and the frequency of the secondary movement speed V.
In this embodiment, the frequency of the motor synchronization speed Vs is obtained according to the output frequency (40 HZ) of the ground three-phase frequency converter, and may be preferably 40HZ; the secondary movement speed is preferably v=11.7m/s, the reduced operating frequency is 25HZ, and the slip frequency is 15HZ. The linear induction motor driving control mode can adopt constant slip frequency control, so that the output frequency of the ground three-phase frequency converter and the operating frequency of the vehicle-mounted secondary power generation assembly 2 can be kept at a constant slip frequency fs (such as 15 Hz) to generate induced voltage in the vehicle-mounted secondary power generation assembly 2, and then the induced voltage is rectified and inverted to supply power to vehicle-mounted electrical equipment. It should be noted that the constant slip frequency fs in the present embodiment is determined by the structure of the motor, and different motor structures may correspond to different constant slip frequencies fs, which is not limited to 15Hz.
When the train runs, the vehicle-mounted electric equipment transmits energy from the ground to the vehicle through the non-contact linear power generation device. The linear generator and the linear asynchronous motor for propulsion share a primary stage paved along the track, and no additional pavement is needed, so that the non-contact power generation mode has the advantages of simple structure, low cost and the like.
Through calculation simulation, the output voltage of each phase in the vehicle-mounted secondary power generation assembly 2 is shown in fig. 2, the voltage output waveform is approximately sinusoidal, harmonic components are small, peak voltage is approximately 200V, and the vehicle-mounted electric equipment is powered through rectification inversion. Meanwhile, table 1 shows the respective parameter data of the linear power generation device:
table 1 data of parameters of the linear power generation device
The contactless linear power generation device can supply power to vehicle-mounted equipment, and working current in the vehicle-mounted secondary power generation assembly 2 and the primary magnetic field electromagnetically interact to generate forward propelling force. Therefore, the linear power generation device can supply power for vehicle-mounted equipment and can also provide forward propulsion for the magnetic levitation vehicle.
Embodiment two:
the vehicle-mounted power supply system for supplying power by using the linear power generation device is shown in fig. 3, and comprises rectifying and voltage stabilizing equipment, a power distribution cabinet, an inverter, direct current electric equipment and alternating current electric equipment which are arranged on the magnetic levitation train; preferably, the power supply further comprises a DC-DC switching power supply;
one end of the rectifying and voltage stabilizing equipment is connected with the linear power generation device, and the other end of the rectifying and voltage stabilizing equipment is connected with the power distribution cabinet and is used for receiving the induced voltage generated by the linear power generation device, rectifying and stabilizing the induced voltage and transmitting the rectified and stabilized induced voltage to the power distribution cabinet;
the power distribution cabinet is respectively connected with the direct current electric equipment and the inverter and is used for directly transmitting the rectified and stabilized induced voltage to the direct current electric equipment for use; or the voltage after rectification and voltage stabilization is transmitted to the inverter, converted by the inverter and transmitted to the alternating current electric equipment connected with the inverter, and the alternating current electric equipment is used by the alternating current electric equipment.
Preferably, the power distribution system further comprises a rechargeable storage battery pack as an auxiliary power supply system, wherein the rechargeable storage battery pack is connected with the power distribution cabinet and is used for providing auxiliary power for the power distribution cabinet and simultaneously providing corresponding power distribution, protection and the like.
When the train runs, the secondary three-phase power generation winding 7 of the vehicle-mounted secondary power generation assembly 2 interacts with the primary travelling wave magnetic field on the track to generate induced voltage, and then the induced voltage is rectified and inverted to supply power for vehicle-mounted electric equipment. And each section of magnetic levitation vehicle can be provided with a single group or a plurality of groups of vehicle-mounted secondary power generation assemblies 2 according to the power consumption requirement of vehicle-mounted electric equipment to provide required energy for the magnetic levitation vehicle.
The output capacity of the vehicle-mounted power supply mode combined by the linear power generation device and the storage battery can meet the power consumption requirements of the train under various load working conditions, and the system has enough overload capacity and can bear the impact of load starting current in a short time.
Embodiment III:
the present invention also provides a magnetic levitation train, which includes the vehicle-mounted power supply system in the second embodiment, where the vehicle-mounted power supply system is identical to the second embodiment, and is not described herein again.
The various embodiments provided by the invention can be combined with each other in any way as required, and the technical scheme obtained by the combination is also within the scope of the invention.
In summary, in the technical scheme of the invention, the magnetic levitation vehicle adopts a non-contact linear power generation device, so that the vehicle and the ground are completely non-contact; the linear power generation device and the linear induction motor for propulsion share a primary paved along a track, and additional paving is not needed, so that the weight of vehicle-mounted equipment is effectively reduced, and the effective load of the whole vehicle is improved; the linear power generation device can supply power for the vehicle-mounted equipment and can also provide forward propulsion for the magnetic levitation vehicle; and a vehicle-mounted power supply mode of combining the linear power generation device and the storage battery is adopted, so that normal power distribution is ensured.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The invention will also include such modifications and variations if they come within the scope of the claims and their equivalents.
Claims (5)
1. A linear power generation device for a magnetic levitation train, comprising:
a linear motor primary assembly laid along the train running track for generating a primary travelling wave magnetic field; the linear motor primary assembly comprises a primary iron core and a primary winding, wherein the primary iron core is paved along a train running track and provided with a plurality of toothed parts, the toothed parts are uniformly arranged on the primary iron core at intervals, and one primary winding is arranged between every two adjacent toothed parts;
at least one group of vehicle-mounted secondary power generation components arranged on the magnetic levitation train, which generate induced voltage through interaction with the primary traveling wave magnetic field and supply power for vehicle-mounted electric equipment on the magnetic levitation train by utilizing the induced voltage, and meanwhile, working current in the vehicle-mounted secondary power generation components interacts with the primary traveling wave magnetic field to generate forward propelling force; the vehicle-mounted secondary power generation assembly comprises a secondary back iron which is arranged corresponding to the primary iron core; the lower end face of the secondary back iron is connected with at least one group of secondary three-phase power generation windings; each secondary three-phase generating winding comprises a B phase, a C phase and an A phase which are sequentially and uniformly arranged at intervals along the running direction of the train, and the B phase, the C phase and the A phase are oppositely arranged on the toothed part; when the train runs, the vehicle-mounted electric equipment transmits energy from the ground to the vehicle through the non-contact linear power generation device;
the three-phase frequency converter is used for connecting the primary windings and inputting corresponding 120-degree mutually-different three-phase alternating currents into the primary windings, and the three-phase alternating currents are used for generating the primary traveling wave magnetic field, and the output frequency of the three-phase alternating currents is 35-45Hz; and maintaining a constant slip frequency fs between the output frequency of the ground three-phase frequency converter and the operating frequency of the vehicle-mounted secondary power generation assembly, and generating induced voltage in the vehicle-mounted secondary power generation assembly through the constant slip frequency fs.
2. The linear power generation apparatus of claim 1, further comprising an inverter for rectifying and inverting the induced voltage to power on-board electrical equipment on the magnetic levitation train.
3. A vehicle-mounted power supply system for supplying power by using the linear power generation device according to any one of claims 1 or 2, comprising rectifying and voltage stabilizing equipment, a power distribution cabinet, an inverter, direct current electric equipment and alternating current electric equipment which are arranged on the magnetic levitation train;
one end of the rectifying and voltage stabilizing equipment is connected with the linear power generation device, and the other end of the rectifying and voltage stabilizing equipment is connected with the power distribution cabinet and is used for receiving the induced voltage generated by the linear power generation device, rectifying and stabilizing the induced voltage and transmitting the rectified and stabilized induced voltage to the power distribution cabinet;
the power distribution cabinet is respectively connected with the direct current electric equipment and the inverter and is used for directly transmitting the rectified and stabilized induced voltage to the direct current electric equipment for use; or the voltage after rectification and voltage stabilization is transmitted to the inverter, converted by the inverter and transmitted to the alternating current electric equipment connected with the inverter, and the alternating current electric equipment is used by the alternating current electric equipment.
4. A vehicle power supply system as claimed in claim 3, further comprising a rechargeable battery pack connected to the power distribution cabinet for providing auxiliary power thereto.
5. A magnetic levitation train comprising an on-board power supply system as claimed in claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710219554.4A CN106828183B (en) | 2017-04-06 | 2017-04-06 | Linear power generation device, vehicle-mounted power supply system and maglev train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710219554.4A CN106828183B (en) | 2017-04-06 | 2017-04-06 | Linear power generation device, vehicle-mounted power supply system and maglev train |
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| Publication Number | Publication Date |
|---|---|
| CN106828183A CN106828183A (en) | 2017-06-13 |
| CN106828183B true CN106828183B (en) | 2023-11-07 |
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| CN201710219554.4A Active CN106828183B (en) | 2017-04-06 | 2017-04-06 | Linear power generation device, vehicle-mounted power supply system and maglev train |
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| CN109017434B (en) * | 2018-07-27 | 2020-11-06 | 中车青岛四方机车车辆股份有限公司 | Power supply system, method and device for magnetic suspension train |
| CN109067255A (en) * | 2018-09-10 | 2018-12-21 | 北京原力辰超导技术有限公司 | A kind of super-conductive magnetic suspension linear induction motor driving device |
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