TW201506968A - Magnetic field adjustable type magnetic unit - Google Patents

Abstract

The present invention provides a magnetic field adjustable type magnetic unit, which includes at least three magnets. The magnets include at least two axially-magnetized magnets and at least one radially-magnetized magnet. The two axially-magnetized magnets and the radially-magnetized magnet are alternatively stacked. Directions of magnetic field lines generated by the two axially-magnetized magnets and the radially-magnetized magnet sandwiched in between the two axially-magnetized magnets are clockwise and counterclockwise respectively and coils are wound around the two axially-magnetized magnets for making current so as to allow the magnetic field adjustable type magnetic unit to change the strengthening direction of the magnetic field line according to current intensity. The magnetic polarization direction of the present invention is arranged in a special arrangement and the coils are wound around the magnet with particular polarization direction to control the intensity and direction of the magnetic field according to the current intensity generated by the coils.

Description

Magnetic field adjustable magnetic unit

The invention relates to a structure for adjusting a magnetic field of a magnet, in particular to a magnetic field adjustable magnetic unit for adjusting a magnetic field by using a current.

Maglev is a method that uses magnetic suction and repulsive force to make objects float in the air without relying on other external forces. By using electromagnetic force to resist gravity, objects can be free from gravitational binding and free to float.

According to the prior art, the plurality of magnets in a general maglev system are composed of an electromagnet or a single magnet of a permanent magnet. Taking an electromagnet as an example, the electromagnet surrounds all the magnets with a coil to make the coil pass. The in-current generates a magnetic field for suspending. However, when the electromagnet generates a magnetic force for stable suspension, since the electromagnet generates a magnetic force required by the current, a large current is required. In addition, when the conventional electromagnet is used, it is necessary to use a larger power electromagnet in response to the demand of the force, but the relative electromagnet is increased in volume due to the increase in the number of entanglements of the coil, and the cost is increased. It takes up a lot of space, and the location where it is installed does not necessarily have a large space, which makes the large electromagnet difficult to use and cost considerations, which is a disadvantage for it; and if a small electromagnet is used and a strong voltage is applied, After the magnetization for a period of time, it will burn out, and when the voltage is low, the force is too small to pull the object, which is the disadvantage.

In view of the above, the present invention proposes a combination of a permanent magnet and an electromagnet in response to the above-mentioned shortcomings of the prior art, using a permanent magnet to provide most of the magnetic force, and then by electricity. The magnet adjusts the overall magnetic field by the coil current to achieve stable suspension, so as to effectively overcome the above These problems.

The main object of the present invention is to provide a magnetic field adjustable magnetic unit in which magnet polarization directions are arranged in a special arrangement, and a coil is wound around a magnet of a specific polarization direction to change the magnitude of the magnetic field by the magnitude of the current and the current direction. Direction, and because the middle radial permanent magnet generates most of the magnetic support external force, and then the input current is adjusted by the two axial electromagnets to adjust the overall magnetic field, the current can be stabilized by a small current to achieve stable suspension.

Another object of the present invention is to provide a magnetic field tunable magnetic unit which is effective in reducing the magnitude of the bias current.

Still another object of the present invention is to provide a magnetic field adjustable magnetic unit which is simple in structure, low in manufacturing cost, and high in production efficiency.

To achieve the above object, the present invention provides a magnetic field tunable magnetic unit comprising at least three magnets including at least two axially magnetized magnets and at least one radially magnetized magnet, a biaxially magnetized magnet and a radially magnetized magnet system The electrodes are alternately stacked, and the two-axis magnetized magnet and the radial magnetized magnet interposed between the two-axis magnetized magnets respectively flow in a clockwise direction and flow in a counterclockwise direction, respectively, in two directions. The coils are respectively wound around the magnetized magnets to make the coils turn on the current, and the magnetic field adjustable magnetic unit can change the direction of strengthening the magnetic lines according to the magnitude of the current.

The purpose, technical content, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments.

1‧‧‧Magnetic adjustable magnetic unit

10‧‧‧ magnet

12‧‧‧Axial magnetized magnet

14‧‧‧Axial magnetized magnet

15‧‧‧radial magnetized magnet

16‧‧‧radial magnetized magnet

18‧‧‧radial magnetized magnet

20‧‧‧ coil

30‧‧‧Power supply

40‧‧‧Magnetic system

42‧‧‧rails

422‧‧‧magnetic unit

44‧‧‧Frame

The first figure is a block diagram of a first embodiment of the present invention.

The second figure is a magnetic line distribution diagram of the first embodiment of the present invention.

The third figure is a block diagram of a second embodiment of the present invention.

The fourth figure is a magnetic line distribution diagram of the second embodiment of the present invention.

Figure 5 is a block diagram showing a third embodiment of the present invention.

The sixth drawing is a magnetic line distribution diagram of the third embodiment of the present invention.

The seventh drawing is a schematic view of a first embodiment of the present invention applied to a maglev system.

As shown in the first figure, it includes at least three magnets 10, and the magnet 10 includes at least two axial magnetized magnets 12, 14. In this embodiment, the axial magnetized magnets 12, 14 are an electromagnet and at least one radial magnetized magnet. 15. In this embodiment, the radial magnetized magnet 15 is a permanent magnet, and the two axial magnetized magnets 12 and 14 and the radial magnetized magnet 15 are alternately stacked, so that the two axial magnetized magnets 12 and 14 are disposed with a diameter. To the magnetized magnet 15, the directions of the magnetic lines of force generated by the two-axis magnetized magnets 12 and 14 and the radial magnetized magnet 15 interposed between the two-axis magnetized magnets 12 and 14 are respectively clockwise and counterclockwise. The direction flows; the two axial magnetized magnets 12, 14 respectively surround the coil 20, and the two coils 20 are electrically connected to a power supply 30, so that the power supply 30 generates current to the coil 20, so that the axial magnetized magnets 12, 14 form an electromagnetic The iron, the adjustable magnet group 1 can change the direction of strengthening the magnetic lines according to the magnitude of the current generated by the power supply 30. The magnets 10 are arranged in a Halbach Array. In this embodiment, the polarization directions of the two axial magnetized magnets 12 and 14 are all oriented between the two axial magnetized magnets 12 and 14. The magnetism magnet 15 is radially magnetized, and thus the magnetic lines of force are distributed as shown in the second figure. The magnetic lines of force are respectively outwardly flowed from the radial magnetized magnets 15 to the axial magnetized magnets 12 and 14 on both sides, and the axially magnetized magnets 12 on both sides. And then flow back into the radial magnetization magnet 15, respectively. Since the axial magnetization magnets 12, 14 of the present invention surround the coil 20, respectively, as shown, the generated magnetic lines of force change the flow direction of the magnetic lines of force according to the direction of the magnetic poles of the arrangement. In addition, the adjustment of the current through the coil 20 further strengthens the magnetic field of the entire magnetic field line.

Since the radial magnetized magnet 15 of the above embodiment is a permanent magnet, The axial magnetized magnets 12 and 14 are electromagnets. Therefore, by the combination of the electromagnet and the permanent magnets, the radial magnetized magnets 15 of the intermediate permanent magnets generate most of the magnetic support external force, and the axial magnetized magnets of the two adjacent electromagnets. 12, 14 control input current to adjust the overall magnetic field, can achieve stable suspension with a small current, the axial magnetized magnets 12, 14 and the radial magnetized magnet 15 are permanent magnets, or the axial magnetized magnets 12, 14 are electromagnets, diameter The magnet magnet 15 is a permanent magnet, and the present embodiment can also be implemented. If the magnetization magnets 12 and 14 are magnetized, the polarization direction can be changed according to the direction of the current generated by the coil 20, and the magnets need not be rearranged. You can change the direction of the magnetic field.

Next, please refer to the third figure, as shown in the figure, which is the second of the present invention. In the embodiment, as shown in the figure, in addition to the radial magnetized magnet 15 interposed between the two axial magnetized magnets 12, 14, the two axial magnetized magnets 12, 14 may be respectively provided with axial magnetized magnets. 16, 18, which may be a permanent magnet, to guide the magnetic lines of force to the outer flow to strengthen the strength of the overall magnetic line; and the polarization directions of the two axial magnetized magnets 12, 14 are all oriented between the two axial magnetized magnets 12, 14. The radial magnetization magnet 15 and the polarization magnets 16 and 18 on both sides are polarized downward. If viewed from left to right, the polarization direction of this embodiment is counterclockwise and continuously changes by 90 degrees. Arranged; the axial magnetized magnets 12, 14 respectively surround the coil to electrically connect the power supply 30 to generate current into the coil 20.

Next, please refer to the third figure and the fourth figure, the magnetic force of the structure of the second embodiment The line is as shown in the fourth figure. The magnetic lines of force are outwardly directed from the radial magnetized magnets 15, respectively, and the axial magnetized magnets 12 and 14 on both sides are respectively flowed out, and the axially magnetized magnets 12 and 14 on both sides are respectively flowed back to the radial magnetized magnets. In Fig. 15, since the axial magnetized magnets 12, 14 of the present invention surround the coil 20, respectively, the current in the coil 20 further strengthens the strength of the magnetic lines of force, and the two sides of the axially magnetized magnets 12, 14 are provided with two radial magnetized magnets 16 18, capable of pulling the magnetic lines of force flowing out of the axial magnetized magnets 12, 14, and guiding the magnetic lines of force back, can effectively reduce the magnitude of the biasing current, so that the magnetic lines of force are more concentrated and the effect is stronger.

The invention can be further illustrated as the fifth figure, which is a third embodiment, which is tied For example, in addition to the radial magnetized magnet 15 interposed between the two axial magnetized magnets 12, 14, the two axial magnetized magnets 12, 14 may be respectively provided with axial magnetized magnets 16, 18, which may be The permanent magnet can reflow the magnetic flux of the external flow to effectively reduce the magnitude of the bias current to strengthen the overall magnetic field strength; wherein the polarization directions of the two axial magnetized magnets 12 and 14 are opposite to the two-axis magnetized magnet 12, 14 The radially magnetized magnets 15 interposed therebetween, the polarization magnets 16 and 18 on both sides are polarized downward, and the magnets 10 of the third embodiment are arranged in a clockwise direction when viewed from left to right. Arranged in a 90 degree continuous variation. And the axial magnetized magnets 12, 14 respectively surround the coil to electrically connect the power supply 30 to generate current into the coil.

Next, please refer to the fifth and sixth figures, the structural magnetic force of the third embodiment. As shown in the diagram, the axial magnetization magnet of the third embodiment is opposite to the polarization direction of the axial magnetization magnetization of the second embodiment, so that the magnetic field lines are also opposite. The magnetic lines of the third embodiment are axially magnetic on both sides. The magnets 12, 14 flow out into the radial magnetization magnet 15, respectively. It can be seen that the direction of the magnetic field lines can be changed by changing the arrangement of the polarization directions of the magnets 10. Further, if the axial magnetized magnets 12 and 14 are electromagnets, it is only necessary to change the direction of the current without re-adjusting the magnets 10. The arrangement direction can change the polarization direction and the direction of the magnetic field lines at the same time, which is quite simple and convenient.

Furthermore, the coils around which the axial magnetized magnets 12, 14 of the present invention are respectively surrounded The current flowing in 20 further strengthens the strength of the magnetic lines of force. Two axial magnetized magnets 16, 18 are disposed on both sides of the axial magnetized magnets 12, 14, and the magnetic lines of force flowing out of the axial magnetized magnets 12, 14 can be pulled, and the magnetic lines are guided. Back, the magnetic lines are more concentrated and the effect is stronger.

Next, please refer to the seventh figure. This embodiment uses the first embodiment as an example. The magnetic field tunable magnetic unit 1 is applied to a magnetic levitation system 40. Of course, the second embodiment and the third embodiment can also be applied to the magnetic levitation system 40. This embodiment is exemplified by the magnetic levitation system 40 in the maglev train. Of course, the magnetic field tunable magnetic unit 1 of the present invention is also applied to a motor, a flywheel energy storage battery, a generator, etc., as shown in the figure, the magnetic levitation system 40 has a guide rail. 42, the magnetic field unit 422 is disposed on the guide rail 42, and the magnetic field adjustable magnetic unit 1 of the present invention is respectively disposed on the frame 44 connected to the guide rail 42 under the maglev train (not shown), and the vertical and horizontal directions of the frame 44 The magnetic field adjustable magnetic unit 1 is respectively provided to correspond to the magnetic unit 422, so that the magnetic field adjustable magnetic unit 1 can control the magnitude of the current, and the magnetic field of the adjustable magnetic field can be controlled to be strengthened or weakened according to the magnetic line. Realize the application of maglev to make the maglev train start.

In summary, the polarization direction of the magnet of the present invention is in a special arrangement. Arranging and coiling a magnet with a specific polarization direction to change the magnitude and direction of the magnetic field by the magnitude of the current and the direction of the current, and the majority of the magnetic support external force is generated by the intermediate radial permanent magnet, and then the input is controlled by the two axial electromagnetic axes. The current is adjusted by the current, and a small current can be used. The current is stabilized to achieve stable suspension, and the invention can effectively reduce the magnitude of the bias current, and has a simple structure, low fabrication cost, and high production efficiency.

The present invention is intended to be only the preferred embodiment of the invention, and is not intended to limit the scope of the invention. Therefore, any changes or modifications of the features and spirits of the present invention should be included in the scope of the present invention.

1‧‧‧Magnetic adjustable magnetic unit

10‧‧‧ magnet

12‧‧‧Axial magnetized magnet

14‧‧‧Axial magnetized magnet

15‧‧‧radial magnetized magnet

20‧‧‧ coil

30‧‧‧Power supply

Claims (7)

A magnetic field tunable magnetic unit comprising: at least three magnets including at least two axial magnetized magnets and at least one radially magnetized magnet, the two axial magnetized magnets and the radial magnetized magnets being alternately stacked, the two axial directions a direction of each magnetic field line generated by the magnetized magnet and the radial magnetized magnet interposed between the two-axis magnetized magnet flows in a clockwise direction and a counterclockwise direction respectively; and at least two coils surround the axial magnetization The magnet turns on the current, and changes the direction of the magnetic field line according to the magnitude of the current. The magnetic field adjustable magnetic unit according to claim 1, further comprising at least one power supply device electrically connected to the two coils to generate current to the coil. The magnetic field adjustable magnetic unit according to claim 1, wherein the axial magnetization magnet is an electromagnet and the radial magnetization magnet is a permanent magnet. The magnetic field tunable magnetic unit of claim 1, wherein the axial magnetization magnet and the radial magnetization magnet are permanent magnets. The magnetic field adjustable magnetic unit according to claim 1, wherein the axial magnetization magnet is an electromagnet, and the radial magnetization magnet is a permanent magnet. The magnetic field tunable magnetic unit of claim 1, wherein the magnets are arranged in a Halbach Array. The magnetic field-adjustable magnetic unit of claim 1, wherein each of the two radial magnetization magnets is further provided with one of the axial magnetization magnets to guide the magnetic lines of force.