阅读说明：本技术 一种应用于磁悬浮列车的超导直线电机 (Superconducting linear motor applied to maglev train ) 是由 吕刚 周桐 闫少强 于 2019-10-29 设计创作，主要内容包括：本发明提供了一种应用于磁悬浮列车的超导直线电机,属于磁悬浮列车技术领域。包括均匀安装在轨道两侧的多个超导集成单元,以及均匀安装在列车两侧的与超导集成单元对应的多个超导线圈；超导集成单元包括依次并列的第一8字型线圈、第二8字型线圈和第三8字型线圈,分别与三相电源的U、V、W相连接；相邻的第一8字型线圈依次串联,相邻的第二8字型线圈依次串联,相邻的第三8字型线圈依次串联。本发明实现了集牵引、悬浮和侧向导向功能一体化,使磁悬浮列车的磁浮结构更加简单,减小了列车的重量,降低了设备安装的困难度,提高了运行可靠性；避免了端部效应的产生,提高了电机的牵引力和效率,降低了牵引力波动,提高了运行质量和运行效率。(The invention provides a superconducting linear motor applied to a magnetic levitation train, and belongs to the technical field of magnetic levitation trains. The system comprises a plurality of superconducting integrated units which are uniformly arranged on two sides of a track, and a plurality of superconducting coils which are uniformly arranged on two sides of a train and correspond to the superconducting integrated units; the superconducting integrated unit comprises a first 8-shaped coil, a second 8-shaped coil and a third 8-shaped coil which are sequentially parallel, and the first 8-shaped coil, the second 8-shaped coil and the third 8-shaped coil are respectively connected with U, V, W of a three-phase power supply; the adjacent first 8-shaped coils are sequentially connected in series, the adjacent second 8-shaped coils are sequentially connected in series, and the adjacent third 8-shaped coils are sequentially connected in series. The invention realizes the integration of traction, suspension and lateral guidance functions, so that the magnetic suspension structure of the magnetic suspension train is simpler, the weight of the train is reduced, the difficulty of equipment installation is reduced, and the operation reliability is improved; the end effect is avoided, the traction force and the efficiency of the motor are improved, the traction force fluctuation is reduced, and the operation quality and the operation efficiency are improved.)

1. A superconducting linear motor applied to a magnetic suspension train is characterized by comprising a plurality of superconducting integrated units which are sequentially and uniformly arranged on two sides of the track along the track direction, and a plurality of superconducting coils (1) which are uniformly arranged on two sides of the train along the track direction and correspond to the superconducting integrated units;

the superconducting integrated unit comprises three 8-shaped coils which are sequentially parallel, namely a first 8-shaped coil (21), a second 8-shaped coil (22) and a third 8-shaped coil (23), wherein each 8-shaped coil is respectively connected with U, V, W of a three-phase power supply;

the adjacent first 8-shaped coils (21) are sequentially connected in series, the adjacent second 8-shaped coils (22) are sequentially connected in series, and the adjacent third 8-shaped coils (23) are sequentially connected in series.

2. The superconducting linear motor applied to a maglev train according to claim 1, wherein the 8-shaped coil comprises an upper half coil (3) and a lower half coil (4) which are symmetrical to each other, a current outflow end of the upper half coil (3) is connected with a current inflow end of the lower half coil (4), and a current flowing direction of the upper half coil is opposite to a current flowing direction of the lower half coil.

3. Superconducting linear motor for magnetic levitation trains according to claim 2, characterized in that the first 8-shaped coil (21) is connected to the U of a three-phase power supply, the second 8-shaped coil (22) is connected to the W of a three-phase power supply and the third 8-shaped coil (23) is connected to the V of the three-phase power supply.

4. A superconducting linear motor for magnetic levitation trains according to claim 3, wherein when the train carrying the charged superconducting coil (1) is deflected downward, an induced eddy current is generated inside the 8-shaped coil when the superconducting coil (1) passes through the 8-shaped coil on both sides of the track, and the induced electromotive force of the lower half coil (4) is greater than that of the upper half coil (3), and the magnetic field generated by the lower half coil (4) is opposite to the direction of the magnetic field generated by the superconducting coil (1).

5. A superconducting linear motor for use in magnetic levitation trains as claimed in claim 3, wherein if the train carrying the charged superconducting coil (1) is laterally displaced, the superconducting coil (1) passes through the coils 8 on both sides of the track, a first closed loop is formed between the two upper half coils (3) on both sides of the track, and a second closed loop is formed between the two lower half coils (4) on both sides of the track, the first closed loop and the second closed loop providing lateral guiding force to the superconducting coil (1).

Technical Field

The invention relates to the technical field of magnetic suspension trains, in particular to a superconducting linear motor which can provide thrust, suspension and lateral force for the operation of a high-speed magnetic suspension train and realize the integration of traction, suspension and lateral guidance functions and is applied to the magnetic suspension train.

Background

In the field of rail transit, non-contact magnetic suspension traffic is an important direction for the development of modern rail transit due to low noise, no abrasion and high safety, and the non-contact magnetic suspension traffic meets the development requirement of green travel. For a magnetic-levitation train, traction, levitation and guidance are important links which need attention.

In the existing high-speed maglev system, a train is driven by a linear synchronous motor: namely by a primary coil mounted on a ground track and a secondary coil mounted on a magnetic levitation train. And the suspension and the guidance are realized by devices such as suspension electromagnets or other coils. Therefore, the existing magnetic suspension train generally has two or more devices for generating the required traction force and suspension force and realizing automatic guiding, so that the magnetic suspension structure is more complex, the weight of the train is increased, the difficulty of equipment installation is improved, and the reliability of the train is reduced. In addition, the short primary linear motor has obvious end effect when running at high speed due to the opening of the iron core, so that the traction force and the efficiency of the motor can be greatly reduced; for a linear synchronous motor with an iron core, the existence of a tooth slot causes the generation of tooth slot force, thereby influencing the fluctuation of traction force.

Disclosure of Invention

The invention aims to provide a superconducting linear motor which integrates the functions of traction, suspension and lateral guidance and is applied to a magnetic suspension train, so as to solve at least one technical problem in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a superconducting linear motor applied to a maglev train, which comprises a plurality of superconducting integrated units and a plurality of superconducting coils, wherein the superconducting integrated units are sequentially and uniformly arranged on two sides of the track along the track direction, and the superconducting coils are uniformly arranged on two sides of the train along the track direction and correspond to the superconducting integrated units;

the superconducting integrated unit comprises three 8-shaped coils which are sequentially parallel, namely a first 8-shaped coil, a second 8-shaped coil and a third 8-shaped coil, wherein each 8-shaped coil is respectively connected with U, V, W of a three-phase power supply;

the adjacent first 8-shaped coils are sequentially connected in series, the adjacent second 8-shaped coils are sequentially connected in series, and the adjacent third 8-shaped coils are sequentially connected in series.

Preferably, the 8-shaped coil includes an upper half coil and a lower half coil which are symmetrical to each other, a current outflow end of the upper half coil is connected to a current inflow end of the lower half coil, and a current flowing direction of the upper half coil is opposite to a current flowing direction of the lower half coil.

Preferably, the first 8-shaped coil is connected to U of a three-phase power supply, the second 8-shaped coil is connected to W of the three-phase power supply, and the third 8-shaped coil is connected to V of the three-phase power supply.

Preferably, when the train carrying the charged superconducting coil is shifted downward, when the superconducting coil passes through the 8-shaped coils on both sides of the track, an induced eddy current is generated inside the 8-shaped coils, the induced electromotive force of the lower half coil is greater than that of the upper half coil, and the direction of the magnetic field generated by the lower half coil is opposite to that of the magnetic field generated by the superconducting coil.

Preferably, when the train carrying the charged superconducting coil is laterally deviated and the superconducting coil passes through the 8-shaped coils on the two sides of the track, a connecting line between two upper half coils opposite to each other on the two sides of the track forms a first closed loop, a connecting line between two upper half coils opposite to each other on the two sides of the track forms a second closed loop, and the first closed loop and the second closed loop provide lateral guiding force for the superconducting coil.

The invention has the beneficial effects that: traction force, suspension force and transverse guiding force can be provided for the operation of a high-speed magnetic suspension train, and the integration of traction, suspension and lateral guiding functions is realized; the magnetic suspension structure of the magnetic suspension train is simpler, the weight of the train is reduced, the difficulty of equipment installation is reduced, and the running reliability of the train is improved; the end effect is avoided, the traction force and the efficiency of the motor are improved, the traction force fluctuation is reduced, and the train operation quality and the train operation efficiency are improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a superconducting linear motor applied to a maglev train according to an embodiment of the present invention.

Fig. 2 is a schematic block diagram of a suspension function of a superconducting linear motor applied to a maglev train according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of a train when the superconducting linear motor for a maglev train according to an embodiment of the present invention is implemented in a levitation function.

Fig. 4 is a schematic diagram of force analysis when the levitation function of the superconducting linear motor applied to the maglev train according to the embodiment of the present invention is implemented.

Fig. 5 is a schematic block diagram of implementation of a lateral guidance function of a superconducting linear motor applied to a maglev train according to an embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of a train when a lateral guidance function of a superconducting linear motor applied to a maglev train according to an embodiment of the present invention is implemented.

Fig. 7 is a schematic diagram of force analysis of the lateral guiding function of the superconducting linear motor applied to the maglev train according to the embodiment of the present invention.

Fig. 8 is a schematic block diagram of implementation of traction function of a superconducting linear motor applied to a maglev train according to an embodiment of the present invention.

Wherein: 1-a superconducting coil; 21-a first "8" shaped coil; 22-a second "8" shaped coil; 23-a third 8-shaped coil; 3-upper half coil; 4-lower half coil.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by way of the drawings are illustrative only and are not to be construed as limiting the invention.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

For the purpose of facilitating an understanding of the present invention, the present invention will be further explained by way of specific embodiments with reference to the accompanying drawings, which are not intended to limit the present invention.

It should be understood by those skilled in the art that the drawings are merely schematic representations of embodiments and that the elements shown in the drawings are not necessarily required to practice the invention.