JP4253823B1 - Magnetic levitation propulsion device - Google Patents

Abstract

Disclosed is a magnetic levitation propulsion device that comprises an electromagnet array comprised by combining electromagnets whose axes are in the propulsion direction and electromagnets whose axes are in the levitation direction, and which are aligned in the propulsion direction, and a stacked coil in which a multiplicity of short-circuited coils, whose axes are in the propulsion direction, are stacked in the propulsion direction. By passing a two-phase AC electrical current through the electromagnet array, a magnetic field with a periodic intensity distribution is caused to travel in the lengthwise direction of the electromagnet array, generating an induction current in each of the individual short-circuited coils that constitute the stacked coil. The interaction between the magnetic field generated by the electromagnet array and the magnetic field generated by the induction current in the short-circuited coil is able to produce levitation force and propulsion force between the electromagnet array and the stacked coil.

Description

  The present invention relates to levitation and propulsion using magnetism.

  In order to realize a high-speed railway, it is effective to lift and propel the vehicle body using magnetism. This includes a magnetic levitation device that uses any one of normal electromagnets, superconducting coils, and permanent magnets. It is being considered to combine a propulsion device with a linear motor.

  Of the above magnetic levitation devices, those using permanent magnets are called induct racks, and their operating principles are closely related to the present invention (see, for example, non-patent literature).

  Hereinafter, the operating principle of the induct rack will be described with reference to FIGS.

  The induct rack generates a levitation force between two elements described below. As shown in FIG. 1, when the propulsion direction 1 of the apparatus is set to the right, the direction of the magnetic pole of the permanent magnet is changed in the order of bottom, left, top, right, and bottom. It is a Halbach array 2 configured by arranging a number. The other is a laminated coil 3 in which short-circuit coils perpendicular to the magnetic field are stacked in the propulsion direction 1 while being insulated from each other. When the induct rack is used for a magnetic levitation railway, the laminated coil 3 is Orbit.

  The magnetic fields created by the Halbach array 2 are opposed to each other with a permanent magnet having a magnetic pole parallel to the flying direction 4 as shown by 5 and 6 in FIG. Among these, the magnetic field 5 on the laminated coil 3 side is strengthened by an adjacent magnet, and the magnetic field 6 on the opposite side to the laminated coil 3 is weakened. Therefore, as shown in FIG. 3, the intensity 7 of the magnetic field 5 formed on the laminated coil side by the Halbach array 2 when the propulsion direction 1 is N pole is a sinusoidal distribution 8, and the levitation direction perpendicular to the propulsion direction 1 4 has a sinusoidal distribution 10 that is 90 degrees out of phase.

  For this reason, when the Halbach array 2 travels on the laminated coil 3 in the propulsion direction 1, a sinusoidal magnetic field having a magnetic force direction opposite to the magnetic field distributions 8 and 10 is generated on the laminated coil 3. As a result, an induced electromotive force is generated in the laminated coil 3, and as a result, a drag force opposite to the propulsion direction 1 and a levitation force in the levitation direction 4 are generated in the Halbach array 2 traveling in the propulsion direction 1. In addition, since the levitation force increases as the Halbach array 2 and the laminated coil 3 approach each other, the induct rack does not require dynamic control to keep the levitation amount appropriate. Magnetic levitation is performed by the above operation principle.

“The Journal of the Institute of Electrical Engineers of Japan, D, Industrial Applications”, Volume 121, No. 10, 2001, p. 1049

  Among the magnetic levitation propulsion devices described above, the method of levitation using a normal electromagnet requires dynamic control to keep the levitation amount appropriate, and levitation using a superconducting coil. The system requires a cooling device for keeping the coil in a superconducting state.

  In addition, as is apparent from the operating principle, the induct rack does not float when stationary, and therefore, when applied to railways, it is necessary to separately install wheels that support the vehicle body when the vehicle is stopped and at a low speed.

  In either method, it is necessary to install a separate linear motor for propulsion.

  The present invention is intended to solve the problems of such a conventional magnetic levitation propulsion device, does not use a superconducting coil, does not perform dynamic control, and floats even in a stationary state, The object is to realize a magnetic levitation propulsion device that can also propel at the same time.

  The vertical electromagnet with the levitation direction as the axis and the horizontal electromagnet with the propulsion direction as the axis are alternately arranged while reversing the direction of the magnetic poles during energization, and the main arrangement with the propulsion direction as the longitudinal direction is configured, and the same configuration The sub-array to be taken is wound around the outside or inside of the individual electromagnets of the main array, and the main array is installed at a position shifted by one electromagnet in the longitudinal direction of the array to constitute an electromagnet array. The side surfaces where the vertical and horizontal electromagnets strengthen each other's magnetic field are arranged facing the laminated coil composed of a number of short-circuited coils stacked in the longitudinal direction of the electromagnet arrangement, and the alternating current is 90 degrees out of phase with the main array and subarray. Connect the power supply.

  The operation of the above problem solving means is as follows. That is, the magnetic field generated by the alternating current in which the main array and the sub array are out of phase has an intensity distribution that periodically changes in the longitudinal direction of the electromagnet array and is directed in the longitudinal direction, similar to the magnetic field generated by the Halbach array. Therefore, even if the electromagnet arrangement is stationary with respect to the laminated coil, the same action as the proceeding Halbach arrangement can be exerted on the laminated coil.

  As a result, a levitation force is generated between the electromagnet array and the laminated coil, and simultaneously, a propulsive force in the longitudinal direction of the electromagnet array is generated.

  Further, as with the induct rack, the levitation force increases as the electromagnet arrangement and the laminated coil approach each other.

  As described above, the magnetic levitation propulsion device of the present invention can be levitated even in a stationary state, and the levitation force increases with a decrease in the levitation amount, so even without using a superconducting coil that requires a cooling device, Dynamic control of the flying height can be eliminated.

  Further, propulsion can be performed without installing a propulsion device such as a linear motor.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  As shown in FIG. 4, an arbitrary number of horizontal electromagnets 12 with the propulsion direction 1 as an axis are stacked inside or outside a rectangular vertical electromagnet 11 with the levitating direction 4 as an axis, arranged in the propulsion direction 1 and propulsion is performed. An electromagnet array 13 is formed with the direction 1 as the longitudinal direction.

  As shown in FIG. 5, the vertical electromagnet 11 and the horizontal electromagnet 12 of the electromagnet array 13 both reverse the direction of the magnetic poles by reversing the winding direction or the direction of the current to be supplied. . The position where the direction of the magnetic pole is reversed is shifted by one electromagnet in the propulsion direction 1 between the vertical electromagnet 11 and the horizontal electromagnet 12. Of the horizontal electromagnets 12 and the vertical electromagnets 11 constituting the electromagnet array 13, the wirings 15 from the AC power supply 14 are connected as a set of those arranged alternately while reversing the directions of the magnetic poles. Similarly, the remaining electromagnets are connected as one set to the wiring 17 from the AC power supply 16.

  As shown in FIGS. 6 and 7, a set of electromagnets connected to the wiring 15 is a main array 18, and a set of electromagnets connected to the wiring 17 is a sub-array 19. If the DC power supply 20 is connected to the wiring 15, the main array 18 generates a magnetic field similar to the Halbach array 2. The same applies to the subarray 19. However, the magnetic field distribution of the sub-array 19 is shifted from the main array 18 by one electromagnet in the propulsion direction 1.

  Here, AC currents having the same current value and a phase difference of 90 degrees are supplied from the AC power source 14 and the AC power source 16. With this current, the intensity distribution in the flying direction 4 of the magnetic field generated by the main array 18 on the laminated coil 3 side periodically changes in the order of 21 to 22, 23, 24, and 25 in FIG. Further, the intensity distribution in the flying direction 4 of the magnetic field generated by the sub array 19 on the laminated coil 3 side periodically changes in the order of 26 to 27, 28, 29, and 30 in FIG. Since these two magnetic fields are shifted by one electromagnet in the propulsion direction 1 and the time change is shifted by a quarter period of the alternating current, the magnetic field created by the synthesis of the two magnetic fields The distribution proceeds in the propulsion direction 1 in the order of 31 to 32, 33, 34, and 35 in FIG. Similarly, the magnetic field intensity distribution in the propulsion direction 1 also proceeds in the propulsion direction 1.

As described above, the change in the magnetic field caused by the progression of the Halbach array 2 can be reproduced by the electromagnet array 13 stationary with respect to the laminated coil 3. As a result, a levitation force acts on the electromagnet array 13 on the laminated coil 3. In addition, in the case of the electromagnet array 13, the drag received when the Halbach array 2 travels on the laminated coil 3 acts as a driving force.

  Perspective view of magnetic levitation device using permanent magnet   External view of a magnetic levitation device using permanent magnets as seen from the side   Magnetic field intensity distribution created on the laminated coil side by Halbach array   Magnetic levitation propulsion device showing an embodiment of the present invention   Wiring diagram of electromagnet arrangement   Wiring diagram of the main layout when a DC power supply is connected   Sub-array wiring diagram when a DC power supply is connected   Temporal change of magnetic field strength distribution created by electromagnetic array on laminated coil side

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Propulsion direction 2 Halbach array 3 Laminated coil 4 Levitation direction 5 Laminated coil side magnetic field 6 Magnetic field opposite to laminated coil 7 Propulsion direction magnetic field intensity 8 Propulsion direction magnetic field intensity distribution 9 Levitation direction magnetic field intensity 10 Levitation direction magnetic field Intensity distribution 11 Vertical electromagnet 12 Horizontal electromagnet 13 Electromagnet array 14 AC power source 15 Wiring 16 AC power source 17 Wiring 18 Main array 19 Sub array 20 DC power source 21 Intensity distribution in the floating direction of the magnetic field generated by the main array 26 Levitation of the magnetic field generated by the sub array Intensity distribution in direction 31 Intensity distribution in the flying direction of the magnetic field created by the electromagnet array

Claims (2)

The vertical electromagnet with the levitation direction as the axis and the horizontal electromagnet with the propulsion direction as the axis are alternately arranged while reversing the direction of the magnetic poles during energization, and the main arrangement with the propulsion direction as the longitudinal direction is configured, and the same configuration The sub-array is a coil arranged around the outside or inside of each electromagnet in the main array, and the main array is an electromagnet array that is installed at a position shifted by one electromagnet in the longitudinal direction of the array. By passing alternating currents that are 90 degrees out of phase to the main array and the sub array, the magnetic field has an intensity distribution that periodically changes in the longitudinal direction of the array and travels at an arbitrary speed in the longitudinal direction. vertical electromagnet and horizontal electromagnets in the sequence is generated in the side constructive mutual magnetic, its magnetic field, generated an induced electromotive force in the laminated coil constructed overlapped many short circuited coil in the longitudinal direction of the electromagnet arrangement, as a result Between the electromagnet arrangement the laminated coil, even both quiescent magnetic levitation propulsion device characterized by generating a floating force caused by the electromagnetic interaction. Claims wherein the electromagnet arrangement is due to the progress of the magnetic field generated produces an induced electromotive force in the laminated coil, characterized in that it generates a propulsive force caused by the electromagnetic interaction between the laminated coil result electromagnet arrangement The magnetic levitation propulsion device according to 1.

Images