JPH0667053B2 - Magnetic levitation railway coil arrangement - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an induction repulsion type magnetic levitation coil arrangement, and particularly to a coil for reducing running resistance and simplifying the structure of a vehicle and a track. Regarding placement.

[Conventional technology and its problems]

As shown in FIG. 1, many levitation ground coils for generating the levitation force of the induction repulsion type magnetic levitation are conventionally arranged on the bottom surface of the U-shaped track, and this arrangement is not enough to reduce the running resistance. There was a limit. Also, in order to increase the lift-drag ratio, a method of arranging a ground coil of null flux connection that connects two levitation coils in opposite directions as shown in FIG. 2 has been proposed, but the structure of the vehicle and track There was a drawback that it became complicated.

[Means for solving problems]

SUMMARY OF THE INVENTION The present invention aims to solve the above problems, that is, to provide a ground coil arrangement for the purpose of simplifying the structure of a vehicle and a track and reducing running resistance. In the levitation railway, the superconducting coil is vertically arranged on the side surface of the bogie, the propulsion coil is installed on the side wall of the U-shaped track so as to face the superconducting coil, and the levitation coil is vertically arranged in two stages on the surface of the propulsion coil. In addition, the propulsion coil is installed at symmetrical positions with respect to the center, and the upper and lower two stages of the coil are connected in opposite directions to each other to form a closed circuit.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. First
The figure shows an example of a coil arrangement of a conventional magnetic levitation railway. Although the levitation force is generated from the levitation coil 3, it is difficult to increase the lift-drag ratio with such an arrangement. In addition, since an unstable spring in the left-right direction is generated from the levitation coil 3, it is necessary to generate a stable spring exceeding that with a coil for both propulsion and guidance. FIG. 2 shows a conventionally proposed coil arrangement for null flux connection,
This is a method of arranging a ground coil of null flux connection that connects two levitation coils in opposite directions, but the structure of the vehicle and the track becomes complicated. FIG. 3 shows the present invention.
The levitation ground coils are arranged in upper and lower two stages, and are connected to the null flux and attached to the side of the track. By arranging the coils in this way, when the center of the superconducting coil 1 is at the same height as the center of the propulsion coil 2, the levitation coil 3 has a flux linkage of 0, a current of 0, and an electromagnetic running resistance of 0. Becomes That is, when the wheels travel at a low speed, the electromagnetic travel resistance can be made zero by setting the wheel height so that the centers of the superconducting coil 1 and the propulsion coil 2 are aligned. During the levitation traveling, the center of the superconducting coil 1 is slightly lower than the center of the propulsion coil 2 and balances to generate a levitation force. However, because of the null flux connection, the electromagnetic traveling resistance can be reduced. According to the coil arrangement method of the present invention, a stable spring in the left-right direction is generated from the levitation coil 3, so that a small spring in the left-right direction which should be generated by the combined coil 2 for propulsion and guidance. Therefore, the distance between the superconducting coil 1 and the propulsion coil 2 on the carriage may be large, and therefore the propulsion coil 2 and the levitation coil 3 may be arranged so as to overlap each other as shown in FIG. On the other hand, since it is not necessary to attach the coil to the bottom surface of the track, it is not necessary to control the precision during manufacturing, which simplifies the process. Further, as shown in FIG. 3, since there is no coil between the bottom surface of the bogie and the track, there is no restriction on the gap at the bottom surface of the bogie. FIG. 4 shows a method of null flux connection of the levitation coil 3.

〔The invention's effect〕

According to the coil arrangement of the present invention, the running resistance of the vehicle can be reduced, the energy for running can be saved, and the power supply equipment can be made small. Further, since the vehicle structure does not have a restriction on the size of the bottom surface, the degree of freedom in design is increased and the track structure can be simplified.

[Brief description of drawings]

FIG. 1 shows a coil arrangement in a cross section of a conventional induction repulsion type magnetic levitation railway, and FIG. 2 shows a coil arrangement in a cross section of a conventional ground coil with a null flux connection. FIG. 3 shows a coil arrangement according to the present invention, and FIG. 4 shows a method for null flux connection of the levitation coil. 1 ... Superconducting coil 2 ... Propulsion coil 3 ... Levitating coil 4 ... Orbital concrete 5 ... Bogie 6 ... Levitating coil null flux connection line

Claims (1)

[Claims] 1. In an induction repulsion type magnetic levitation railway, a superconducting coil (1) is vertically arranged on a side surface of a carriage (5), and the superconducting coil (1) is opposed to a side wall portion of a U-shaped track. The propulsion coil (2) is installed, and the levitation coil (3) is further arranged on the surface of the propulsion coil (2). The levitation coil (3) has unit coils arranged vertically in two steps, and The unit coils of the steps are connected in opposite directions by the null flux connection wire (6) of the levitation coil to form a closed circuit, and the vertical center of the propulsion coil and the center of the levitation coil match. The magnetic levitation railway coil is characterized by being installed in such a position.