CN205544881U - Transverse magnetic flux high -temperature superconductor magnetic suspension linear electric motor - Google Patents

Abstract

The utility model discloses a transverse magnetic flux high-temperature superconducting magnetic levitation linear motor, which utilizes the normal repulsion force, transverse restoration force and longitudinal thrust simultaneously received by the backless yoke high-temperature superconductor in a three-phase traveling wave magnetic field to realize the integration of levitation, guidance and drive change. Its composition is: a transverse coil (1) is wound on an iron core (2), a plurality of iron cores (2) are placed parallel and equidistant according to the closing direction of vertical magnetic force lines, A-phase winding (3), B-phase winding (5) and C A three-phase symmetrical alternating current is fed into the three-phase symmetrical winding composed of the phase windings (4), and the cooled high-temperature superconductor (6) is suspended directly above the iron core (2) according to a certain structure. The utility model is used in magnetic levitation transportation and the like, replaces the traditional permanent magnetic track, and has the advantages of simple structure, convenient control, low cost and the like.

Description

A Transverse Flux High Temperature Superconducting Magnetic Levitation Linear Motor

technical field

The utility model provides a transverse flux high temperature superconducting magnetic levitation linear motor, which relates to the field of magnetic levitation transportation.

Background technique

High-temperature superconducting magnetic levitation uses the electromagnetic interaction between the strong pinning current of the high-temperature superconductor and the excitation magnetic field to generate a levitation force that is balanced with the gravity of the suspension and the guiding force required for lateral stability. It has unique self-stabilizing characteristics. Because there is no mechanical contact, the energy loss is very small during operation, the operation speed is fast, easy to control, and the noise is extremely low, which greatly improves the system operation efficiency. However, in the current high-temperature superconducting maglev vehicle system scheme, the track magnetic field is generated by a permanent magnet track assembled and assembled by permanent magnets in a certain way, which is used to realize the self-stable suspension of the high-temperature superconductor, so it needs to be laid continuously along the track line For permanent magnets, the longer the track distance, the more materials are used, which leads to an increase in the cost of line materials, and it is unrealistic to use a large number of rare resource permanent magnets.

The transverse flux linear induction motor is a novel linear motor structure. The closed path of the stator flux line of the motor is perpendicular to the moving direction of the traveling wave magnetic field. When the mover is a non-magnetic metal plate, the electromagnetic force between the stator and the mover The interaction can also generate the electric suspension force while generating the driving force, and can realize the functions of suspension, guidance and driving at the same time without adding other auxiliary equipment. However, the inherent low electrical conductivity of traditional electrical materials (such as aluminum alloys) makes the levitation ability of current transverse flux linear induction motors generally weak, and their applications are greatly limited.

Based on the above, if the principle of transverse flux induction motor can be combined with high-temperature superconducting magnetic levitation technology to design a magnetic levitation linear motor that can replace permanent magnets to realize the integration of levitation guidance and drive, it will undoubtedly greatly save costs and broaden the scope of ultra- The application range of magnetic levitation and linear motor.

Utility model content

The utility model aims to provide a transverse magnetic flux high-temperature superconducting magnetic levitation linear motor. The basic idea is to use the electromagnetic interaction between the high-temperature superconductor's strong pinning current and the transverse coil magnetic field and traveling wave magnetic field to produce a macroscopically incompatible with its own gravity. Balanced suspension forces and provide guidance for lateral stability and thrust for movement.

The scheme that the utility model solves its technical problem adopts is as follows:

A transverse magnetic flux high-temperature superconducting magnetic levitation linear motor, which combines the electromagnetic characteristics of high-temperature superconductors with the principle of transverse magnetic flux, and the iron core 2 wound with a transverse coil 1 is placed in parallel and equidistant to the closed path of the vertical magnetic force line, and the A-phase winding 3, The three-phase symmetrical winding composed of the B-phase winding 5 and the C-phase winding 4 is supplied with three-phase symmetrical alternating current, and the cooled high-temperature superconductor 6 is suspended directly above the iron core 2 .

In this way, the utility model transverse flux high temperature superconducting magnetic levitation linear motor combines the unique electromagnetic characteristics of zero resistance of high temperature superconductors and the principle of transverse flux, and its specific composition is:

Primary stator part: the transverse coil 1 is wound on the iron core 2, and multiple iron cores 2 are placed parallel and equidistant according to the closed path of the vertical magnetic force line. The iron core 2 is generally E-shaped or U-shaped, and the material is the same as that of the traditional linear motor stator core. A-phase winding 3, B-phase winding 5 and C-phase winding 4 are not in contact with each other, forming a three-phase symmetrical primary winding. When the three-phase symmetrical alternating current is passed through the AC power supply, a radial traveling wave magnetic field and a transverse stable magnetic field are generated at the air gap. .

Secondary mover part: The mover part is mainly composed of high-temperature superconductor 6 and its low-temperature container. The high-temperature superconductor 6 is laid above the stator part according to a certain structure, and works in a certain temperature zone cooled by liquid nitrogen or a refrigerator. After cooling, The high-temperature superconductor 6 realizes suspension and movement under the action of the orbital magnetic field.

Compared with the prior art, the beneficial effects of the utility model are:

1. Combining the unique electromagnetic characteristics of high-temperature superconducting zero resistance and the principle of transverse magnetic flux, it replaces the permanent magnet track of the traditional superconducting magnetic levitation system. The high-temperature superconducting mover can realize vertical suspension and lateral stability at the same time without adding any auxiliary equipment And forward and backward movement, greatly saving the cost.

2. The winding cores are placed independently of each other, which makes the structure simpler and the heat dissipation performance better;

3. The teeth and grooves of the stator core no longer restrict each other, which improves the power density of the linear motor;

4. The suspension-guiding drive integration of the mover carrier can be realized without adding any auxiliary measures.

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

Description of drawings

Fig. 1 is a schematic diagram of a transverse flux high temperature superconducting linear motor.

Fig. 2 is a structural diagram of the primary coil of the transverse flux high temperature superconducting linear motor.

Fig. 3 is a schematic diagram of the magnetic field distribution of the transverse flux high temperature superconducting linear motor.

detailed description

The following description is a detailed description of the utility model in conjunction with the accompanying drawings, and should not be construed as a limitation of the utility model. The following embodiments take an E-shaped iron core as an example.

Shown by accompanying drawing 1 and 2, the specific embodiment of the present utility model is:

The transverse coil 1 is wound on the central axis of the iron core 2, and the three-phase symmetrical winding composed of the A-phase winding 3, the B-phase winding 5 and the C-phase winding 4 is fed with a three-phase symmetrical alternating current. Magnetic poles, the polarities of the magnetic poles on both sides are opposite to those of the middle teeth, and a traveling wave magnetic field is generated at the air gap. The iron cores 2 are placed parallel and equidistant along the closed path of the magnetic force lines of the vertical transverse coil 1. Under the action of the magnetic field of the primary stator coil, the cooled high-temperature superconductor 6 induces strong pinning eddy currents, realizes stable suspension under the action of the magnetic poles of the central teeth of the iron core 2, and realizes guidance under the action of the magnetic poles of the teeth on both sides, and The three-phase traveling wave magnetic field interacts to achieve longitudinal movement, and its movement speed is determined by the three-phase current that is passed in. Finally, the integration of suspension guidance and drive is realized without adding other auxiliary equipment.

Accompanying drawing 2 shows the structural diagram of the primary coil of the transverse magnetic flux high temperature superconducting linear motor. The iron core 2 is made of materials with high magnetic permeability and low electrical conductivity. The transverse coil 1 is wound on the central axis of the E-shaped iron core. section, returning to the middle tooth section to form a closed path, will form three magnetic poles in the tooth section. There are a plurality of such structured iron cores 2, which are placed in the direction perpendicular to the closed path, thereby generating a traveling magnetic field at the air gap.

Accompanying drawing 3 has provided the schematic diagram of the magnetic field distribution of the linear motor described in the utility model. Under the action of three-phase symmetrical alternating current, the magnetic force lines pass through the middle teeth, the air gap, and the teeth on both sides respectively, and return to the middle teeth to form a closed path. The polarity of the magnetic poles of the teeth on both sides is opposite to that of the middle teeth. In addition, The change of the magnetic poles of the middle teeth of each iron core 2 forms a traveling wave magnetic field at the air gap. At this time, the induced magnetic field of the high temperature superconductor 6 and the primary magnetic field attract or repel each other, thereby achieving the integration of suspension, guidance and drive.

The structure of the motor using U-shaped iron core is basically the same as that of E-type. The two transverse coils are respectively wound on the two iron core columns of the U-shaped iron core in the same winding method. The magnetic pole opposite to the magnetic pole of the iron core column is formed at the position to realize levitation and guidance. Three-phase symmetrical alternating current is passed into the three-phase coil, and a traveling wave magnetic field is generated at the air gap to realize the radial movement of the motor, thereby realizing the lateral movement. Flux motor drive, guidance and suspension integration.

Claims (5)

1. transverse magnetic flux high-temperature superconducting magnetic levitation linear electric motors, by the electromagnetic property of high-temperature superconductor with horizontal Combine to magnetic flux principle, it is characterised in that be wound with the iron core (2) of transverse coil (1) by the perpendicular magnetic line of force Closed path parallel equidistant is placed, A phase winding (3), B phase winding (5) and C phase winding (4) composition Three-phase symmetric winding in be passed through three-phase symmetrical alternating current, high-temperature superconductor (6) after cooling down suspends It is placed in the surface of iron core (2).

Transverse magnetic flux high-temperature superconducting magnetic levitation linear electric motors the most according to claim 1, it is characterised in that Iron core (2) uses E type or U-shape structure.

Transverse magnetic flux high-temperature superconducting magnetic levitation linear electric motors the most according to claim 2, it is characterised in that When iron core (2) uses U-shape structure, two transverse coils being connected in series are rotating around at U-shaped the two of iron core On axle.

Transverse magnetic flux high-temperature superconducting magnetic levitation linear electric motors the most according to claim 1, it is characterised in that The a certain warm area that high-temperature superconductor (6) mover is operated in liquid nitrogen or refrigeration machine is cooled down.

Transverse magnetic flux high-temperature superconducting magnetic levitation linear electric motors the most according to claim 1, it is characterised in that High-temperature superconductor (6) uses bulk or band or wire rod.