CN112297866A - Magnetic suspension driving device based on linear double-fed motor and magnetic suspension train system - Google Patents
Magnetic suspension driving device based on linear double-fed motor and magnetic suspension train system Download PDFInfo
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- CN112297866A CN112297866A CN202011154293.0A CN202011154293A CN112297866A CN 112297866 A CN112297866 A CN 112297866A CN 202011154293 A CN202011154293 A CN 202011154293A CN 112297866 A CN112297866 A CN 112297866A
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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
- B60L13/10—Combination of electric propulsion and magnetic suspension or levitation
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- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
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Abstract
The invention relates to a magnetic suspension driving device and a magnetic suspension train system based on a linear double-fed motor, wherein the magnetic suspension driving device comprises a linear double-fed motor stator and a linear double-fed motor rotor, the linear double-fed motor stator is connected with a traction substation through a feed cable, the thrust generated by the linear double-fed motor is used for providing the traction force in the horizontal direction, the normal force generated by the linear double-fed motor stator and the linear double-fed motor rotor is used for providing the suspension force in the vertical direction, an energy storage structure for collecting and storing electric energy is further arranged on one side of the linear double-fed motor rotor, and the electric energy comprises electric energy which is transmitted from the linear double-fed motor. The magnetic suspension train system is driven by a magnetic suspension driving device to form the magnetic suspension train system. Compared with the prior art, the linear double-fed motor realizes rotor side suspension by using the normal force of the linear double-fed motor as the suspension force, and meanwhile, the linear double-fed motor can transmit electric energy to the rotor side when in operation, so that the system cost is reduced, and the linear double-fed motor is safer and more reliable.
Description
Technical Field
The invention relates to the technical field of magnetic suspension, in particular to a magnetic suspension driving device of a linear double-fed motor and a magnetic suspension train system.
Background
The linear motor driving technology is widely applied to the fields of traffic transportation and the like due to the advantages of high thrust, strong climbing capability, small turning radius and the like, and provides a new solution for urban rail transit, freight transportation and port logistics. In particular, a suspension type linear driving system formed by combining linear motor driving and magnetic suspension technology avoids the contact of a moving part and a track, can realize higher running speed and acceleration, reduces system noise, is widely concerned, and is typically applied to magnetic suspension trains.
The linear motors commonly used in the prior maglev train comprise a short stator linear induction motor and a long stator linear synchronous motor. The short stator linear induction motor can only provide driving force for a train, cannot depend on the short stator linear induction motor to realize the suspension of the rotor, and needs to be provided with additional suspension electromagnets. Meanwhile, the converter equipment is arranged on the vehicle, a power supply guide rail needs to be arranged on the track side for supplying power, and the motor efficiency is low. The traction converter equipment of the long stator linear synchronous motor is arranged on the side of the track, and the traction control of the train is realized by the traction control equipment on the ground. The long stator linear synchronous motor can be divided into an electrically excited linear synchronous motor and a superconducting linear synchronous motor, which are represented by a German TR maglev train and a Japanese high-speed maglev train respectively. The superconducting linear synchronous motor is provided with a superconducting magnet exciting coil on the train, and the superconducting magnet exciting coil and a long stator winding and an 8-shaped coil on the track respectively act to provide traction and suspension force of the train. The electrically excited linear synchronous motor utilizes the normal force of the motor as the suspension force of the train, and realizes the integration of suspension and linear driving by only one motor. However, when the train runs, the vehicle-mounted excitation part needs to be continuously supplied with power, and although the TR maglev train is provided with the linear generator on the excitation magnetic pole, the generated energy can not meet the vehicle-mounted requirement when the speed per hour is less than 100km/h, so that a power supply rail needs to be arranged beside the rail to provide vehicle-mounted power supply, the system cost is increased, and the system reliability is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a magnetic suspension driving device of a linear double-fed motor and a magnetic suspension train system, which can realize the integration of suspension and linear driving and can transmit power to a rotor part in a non-contact way.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a magnetic suspension drive arrangement based on sharp double-fed motor, sharp double-fed motor include sharp double-fed motor stator and sharp double-fed motor active cell, sharp double-fed motor stator link to each other with traction substation through the feed cable, the thrust that sharp double-fed motor produced is used for providing the traction force of horizontal direction, the normal force that sharp double-fed motor stator and sharp double-fed motor active cell produced is used for providing the suspension power of vertical direction, sharp double-fed motor active cell one side still be equipped with gather and the energy storage structure of storage electric energy, the electric energy include the electric energy of sharp double-fed motor stator to sharp double-fed motor active cell contactless transmission.
Preferably, in the magnetic suspension driving device, the energy storage structure includes a converter and an energy storage system, an input end of the converter is connected with a rotor winding of the linear doubly-fed motor rotor, and an output end of the converter is connected with the energy storage system through a dc bus.
Preferably, in the magnetic suspension driving device, the energy storage system includes one or more of a storage battery energy storage system and a super capacitor energy storage system.
Preferably, in the magnetic suspension driving device, the power of the contactless transmission of electric energy from the linear doubly-fed motor stator to the linear doubly-fed motor rotor is P2：
P2＝v2FM-Ploss
Wherein v is2Is the synchronous speed corresponding to the side slip frequency of a rotor of the linear double-fed motor, FMFor tractive effort, PlossThe total electric loss of the rotor side of the linear double-fed motor is obtained.
Preferably, in the above magnetic levitation drive apparatus, the drive system is used for driving a magnetic levitation train, the linear doubly-fed motor stator is disposed below a track of the magnetic levitation train, the linear doubly-fed motor rotor is mounted on a bogie of the magnetic levitation train and located below the linear doubly-fed motor stator, and the linear doubly-fed motor rotor moves along with the magnetic levitation train.
A magnetic suspension train system comprises a magnetic suspension train and a track, the system also comprises a magnetic suspension driving device based on a linear double-fed motor, the magnetic suspension driving device based on the linear double-fed motor comprises a linear double-fed motor, the linear double-fed motor comprises a linear double-fed motor stator and a linear double-fed motor rotor, the linear double-fed motor stator is connected with a traction substation through a feed cable, one side of the linear double-fed motor rotor is also provided with an energy storage structure for collecting and storing electric energy, the electric energy comprises electric energy transmitted from the linear double-fed motor stator to the linear double-fed motor rotor in a non-contact manner, the linear double-fed motor stator is laid below the track, the linear double-fed motor rotor is arranged on a steering frame of the magnetic suspension train and is positioned below the linear double-fed motor stator, and the thrust generated by the linear double-fed motor is used for providing the traction force, the normal force that sharp double-fed motor stator and sharp double-fed motor active cell produced is used for providing the suspension power of maglev train vertical direction, sharp double-fed motor stator and the gravity balance of the normal force that sharp double-fed motor active cell produced and maglev train, the energy storage structure be used for the on-vehicle power supply of maglev train.
Preferably, in the magnetic suspension train system, the energy storage structure comprises a converter and an energy storage system, an input end of the converter is connected with a rotor winding of a linear double-fed motor rotor, and an output end of the converter is connected with the energy storage system through a direct current bus.
Preferably, in the above magnetic suspension train system, the energy storage system comprises one or more of a storage battery energy storage system and a super capacitor energy storage system.
Preferably, in the above magnetic suspension train system, the power of the contactless transmission of electric energy from the linear doubly-fed motor stator to the linear doubly-fed motor rotor is P2：
P2＝v2FM-Ploss
Wherein v is2Is the synchronous speed corresponding to the side slip frequency of a rotor of the linear double-fed motor, FMFor tractive effort, PlossThe total electric loss of the rotor side of the linear double-fed motor is obtained.
Preferably, in the above magnetic levitation train system, the energy storage structure is disposed on a magnetic levitation train.
Compared with the prior art, the invention has the following advantages:
(1) the invention not only realizes linear driving by utilizing the linear double-fed motor, but also realizes rotor suspension by utilizing the normal force as the suspension force.
(2) The magnetic suspension driving device can transmit electric energy to the rotor side in a non-contact manner by utilizing the linear double-fed motor during operation, and is safer and more reliable compared with a power supply rail;
(3) the invention realizes power supply at the rotor side by utilizing the linear double-fed motor, cancels an additional power supply device of the rotor beside the rail and reduces the system cost.
Drawings
Fig. 1 is a schematic structural diagram of a magnetic suspension driving device based on a linear double-fed motor according to the present invention;
fig. 2 is a schematic illustration of the structure of a magnetic levitation train system according to the invention.
In the figure, 1 is a linear doubly-fed motor stator, 2 is a linear doubly-fed motor mover, 11 is a stator core, 12 is a stator winding, 21 is a mover core, 22 is a mover winding, 3 is a current transformer, 4 is an energy storage system, 5 is a feed cable, 61 is a rail, 62 is a base, 71 is a carriage, 72 is an air spring, 73 is a bogie, 74 is a guide electromagnet, 75 is an acting plate, and 76 is a suspension traction controller.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. Note that the following description of the embodiments is merely a substantial example, and the present invention is not intended to be limited to the application or the use thereof, and is not limited to the following embodiments.
Example 1
As shown in fig. 1, this embodiment provides a magnetic suspension drive device based on linear doubly-fed motor, linear doubly-fed motor includes linear doubly-fed motor stator 1 and linear doubly-fed motor active cell 2, linear doubly-fed motor stator 1 includes stator core 11 and stator winding 12, linear doubly-fed motor active cell 2 includes active cell core 21 and active cell winding 22, stator winding 12 of linear doubly-fed motor stator 1 links to each other with traction substation through feed cable 5, the thrust that linear doubly-fed motor produced is used for providing the traction force of horizontal direction, the normal force that linear doubly-fed motor stator 1 and linear doubly-fed motor active cell 2 produced is used for providing the levitation force of vertical direction, linear doubly-fed motor active cell 2 one side still is equipped with the energy storage structure of gathering and storing electric energy, the electric energy includes the electric energy of linear doubly-fed motor stator 1 to linear doubly-fed motor. When the linear double-fed motor works in a subsynchronous traction and supersynchronous braking state, the stator 1 of the linear double-fed motor transmits electric energy to the rotor 2 of the linear double-fed motor in a non-contact manner. When the driving system is used for driving a maglev train, the linear doubly-fed motor stator 1 is arranged and laid below a track 61 of the maglev train, the linear doubly-fed motor rotor 2 is arranged on a bogie 73 of the maglev train, the linear doubly-fed motor rotor 2 is located below the linear doubly-fed motor stator 1, and the linear doubly-fed motor rotor 2 moves along with the maglev train.
The energy storage structure comprises a converter 3 and an energy storage system 4, wherein the input end of the converter 3 is connected with a rotor winding 22 of a linear double-fed motor rotor 2, and the output end of the converter 3 is connected with the energy storage system 4 through a direct current bus. The energy storage system 4 includes one or more combinations of a storage battery energy storage system and a super capacitor energy storage system, the energy storage system 4 includes a DC/DC converter and a corresponding energy storage element, the DC/DC converter is connected to the converter 3, the energy storage element in the storage battery energy storage system is a storage battery, the energy storage element in the super capacitor energy storage system is a super capacitor, and what needs to be described here is: the energy storage system 4 is not limited to the above two forms of battery energy storage system and super capacitor energy storage system or the combination of the two forms, and other forms of energy storage systems can be used here.
Linear double-fed motor stator 1-direction linear double-fedThe power of the electric energy transmitted by the motor rotor 2 in a non-contact way is P2：
P2＝v2FM-Ploss
Wherein v is2Is the synchronous speed corresponding to the side slip frequency of a rotor of the linear double-fed motor, FMFor tractive effort, PlossThe total electric loss of the rotor side of the linear double-fed motor is obtained.
This magnetic suspension drive arrangement has realized linear drive through sharp double-fed motor, still utilizes its normal force to do the suspending power, has realized the active cell suspension, and magnetic suspension drive arrangement can utilize sharp double-fed motor to the non-contact transmission electric energy of active cell side when the operation simultaneously, compares the power supply rail safe and reliable more, in addition, passes through the power supply that contactless can realize the active cell side, has cancelled extra other active cell power supply unit of rail, has reduced the system cost.
Example 2
As shown in fig. 2, the present embodiment provides a magnetic levitation train system, which includes a magnetic levitation train and a track 61, wherein the track 61 is laid above a base 62, the magnetic levitation train includes a carriage 71 and a bogie 73, the bogie 73 is located below the carriage 71 and is connected through an air spring 72, two sides of the track 61 are provided with an action plate 75, and correspondingly, a guide electromagnet 74 is provided at a position on the bogie 73, which is opposite to the action plate 75, the system further includes a magnetic levitation driving apparatus based on a linear doubly-fed motor, in this embodiment, the magnetic levitation driving apparatus based on the linear doubly-fed motor is the same as that in embodiment 1, and detailed configuration thereof is not repeated in this embodiment. Linear double-fed motor stator 1 sets up and lays in track 61 below, and linear double-fed motor active cell 2 is installed on magnetic suspension train's bogie 73 and linear double-fed motor active cell 2 is located linear double-fed motor stator 1 below, and the normal force that linear double-fed motor stator 1 and linear double-fed motor active cell 2 produced is balanced with magnetic suspension train's gravity, and the energy storage structure sets up on magnetic suspension train, and the energy storage structure is used for magnetic suspension train's on-vehicle power supply. The maglev train is provided with a suspension traction controller 76, the suspension traction controller 76 is used for controlling traction and suspension force, and the suspension force needs to be kept equal to the gravity of the maglev train in the suspension force control process to realize stable suspension.
The above embodiments are merely examples and do not limit the scope of the present invention. These embodiments may be implemented in other various manners, and various omissions, substitutions, and changes may be made without departing from the technical spirit of the present invention.
Claims (10)
1. The utility model provides a magnetic suspension drive arrangement based on sharp double-fed motor, a serial communication port, sharp double-fed motor include sharp double-fed motor stator (1) and sharp double-fed motor active cell (2), sharp double-fed motor stator (1) link to each other with traction substation through feeder cable (5), the thrust that sharp double-fed motor produced is used for providing the traction force of horizontal direction, the normal force that sharp double-fed motor stator (1) and sharp double-fed motor active cell (2) produced is used for providing the suspension power of vertical direction, sharp double-fed motor active cell (2) one side still be equipped with gather and the energy storage structure of electric energy, the electric energy include the electric energy of sharp double-fed motor stator (1) to linear motor active cell (2) contactless transmission.
2. The magnetic suspension driving device based on the linear doubly-fed motor is characterized in that the energy storage structure comprises a converter (3) and an energy storage system (4), the input end of the converter (3) is connected with a rotor winding of a rotor (2) of the linear doubly-fed motor, and the output end of the converter (3) is connected with the energy storage system (4) through a direct current bus.
3. The magnetic suspension driving device based on the linear doubly-fed motor is characterized in that the energy storage system (4) comprises one or more of a storage battery energy storage system and a super capacitor energy storage system.
4. The magnetic levitation driving device based on the linear doubly-fed motor as claimed in claim 1, wherein the power of the non-contact transmission of the electric energy from the stator (1) of the linear doubly-fed motor to the rotor (2) of the linear doubly-fed motor is P2：
P2＝v2FM-Ploss
Wherein v is2Is the synchronous speed corresponding to the side slip frequency of a rotor of the linear double-fed motor, FMFor tractive effort, PlossThe total electric loss of the rotor side of the linear double-fed motor is obtained.
5. The magnetic levitation driving device based on the linear doubly-fed motor as claimed in claim 1, wherein when said driving device is used for driving a magnetic levitation train, said linear doubly-fed motor stator (1) is installed under the track (61) of the magnetic levitation train, said linear doubly-fed motor rotor (2) is installed on the bogie (73) of the magnetic levitation train and said linear doubly-fed motor rotor (2) is located under the linear doubly-fed motor stator (1), said linear doubly-fed motor rotor (2) moves along with the magnetic levitation train.
6. The utility model provides a maglev train system, includes maglev train and track (61), its characterized in that, the system still includes a maglev drive device based on sharp double-fed motor, and maglev drive device based on sharp double-fed motor includes sharp double-fed motor, and sharp double-fed motor includes sharp double-fed motor stator (1) and sharp double-fed motor active cell (2), sharp double-fed motor stator (1) link to each other with traction substation through feed cable (5), sharp double-fed motor active cell (2) one side still be equipped with the energy storage structure of gathering and storing up electric energy, the electric energy include the electric energy of sharp double-fed motor stator (1) to sharp double-fed motor active cell (2) contactless transmission, sharp double-fed motor stator (1) set up and lay in track (61) below, sharp double-fed motor active cell (2) install on bogie (73) of maglev train and sharp double-fed motor active cell (2) are located sharp double Double-fed motor stator (1) below, the thrust that sharp double-fed motor produced be used for providing the traction force of maglev train horizontal direction, the normal force that sharp double-fed motor stator (1) and sharp double-fed motor active cell (2) produced is used for providing the suspension power of maglev train vertical direction, sharp double-fed motor stator (1) and the gravity balance of the normal force that sharp double-fed motor active cell (2) produced and maglev train, the energy storage structure be used for the on-vehicle power supply of maglev train.
7. A magnetic levitation train system as claimed in claim 6, wherein the energy storage structure comprises a current transformer (3) and an energy storage system (4), the input of the current transformer (3) is connected to the mover winding of the linear doubly-fed motor mover (2), and the output of the current transformer (3) is connected to the energy storage system (4) via a DC bus.
8. The magnetic suspension driving device based on the linear doubly-fed motor is characterized in that the energy storage system (4) comprises one or more of a storage battery energy storage system and a super capacitor energy storage system.
9. A magnetic levitation train system as claimed in claim 6, wherein the linear doubly-fed motor stator (1) transmits electrical energy to the linear doubly-fed motor mover (2) in a contactless manner with a power P2：
P2＝v2FM-Ploss
Wherein v is2Is the synchronous speed corresponding to the side slip frequency of a rotor of the linear double-fed motor, FMFor tractive effort, PlossThe total electric loss of the rotor side of the linear double-fed motor is obtained.
10. A magnetic levitation train system as claimed in claim 6, wherein the energy storage structure is provided on a magnetic levitation train.
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| CN202011154293.0A CN112297866A (en) | 2020-10-26 | 2020-10-26 | Magnetic suspension driving device based on linear double-fed motor and magnetic suspension train system |
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| CN202011154293.0A CN112297866A (en) | 2020-10-26 | 2020-10-26 | Magnetic suspension driving device based on linear double-fed motor and magnetic suspension train system |
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