KR20090083311A - Devices for energy conversion - Google Patents

Abstract

An energy converter is provided to reduce the manufacture cost of the magnetic levitated train by decreasing the volume of the flotation and propulsion system of the magnetic levitated train. An endless track type moving body(105) connects a rotator(100) to the endless track manner. A plurality of permanent magnets(110) is arranged in the endless track type moving body. A fixing conductive material is distanced from the rotator and the endless track type moving body. The fixing conductive material is fixed to the surface or the predetermined fixture. The endless track type moving body is the non-magnetic material. The kinematic velocity of the endless track type moving body is determined by the speed of rotation of rotator.

Description

Energy conversion device {Devices for Energy Conversion}

1 is a view showing a two-dimensional model of the eddy current floating and propulsion integrated energy conversion apparatus according to a preferred embodiment of the present invention.

2 is an eddy current floating and propulsion integrated energy converter of another preferred embodiment of the present invention.

Figure 3 is an eddy current floating and propulsion integrated energy converter of another preferred embodiment of the present invention.

4 is an eddy current floating and propulsion integrated energy converter of another preferred embodiment of the present invention.

5 is a view showing an analysis model of the eddy current floating and propulsion integrated energy conversion apparatus according to the preferred embodiment of the present invention.

FIG. 6 is a diagram showing the results obtained by comparing the force characteristics of the eddy current floating and propulsion integrated energy converter according to the preferred embodiment of the present invention using the spatial harmonic method and the finite element method.

<Description of main parts of drawing>

100: rotating body 105: infinitely moving body

110: permanent magnetic material 115: fixed conductor

The present invention comprises a mover (Mover) comprising at least two or more rotating bodies and the moving body connecting the rotating bodies and arranged at least two magnetic materials and spaced apart in contact with the rotating body and the moving body of the mover, Or it relates to an energy converter comprising a stator (Stator) made of a fixed conductor fixed to a predetermined fixture.

Magnetic Levitation is a method of controlling a repulsive force caused by magnetism to raise a certain object to a certain height on the surface. The magnetic Levitation can be classified into a superconducting magnetic levitation and a normal conduction magnetic levitation. have.

Superconducting magnetic levitation is a powerful superconducting magnet produced by superconducting phenomena (e.g., the loss of electrical resistance of metals, alloys, semiconductors, and / or organic compounds at low temperatures below a certain critical temperature and exhibits fully diamagnetic properties). By using the repulsive force, by using the superconducting Meissner effect (when a magnet is placed on the superconductor, it is injured by using the repulsive force generated in the magnet, there is an advantage that can implement a stable injury without a special controller) Have.

Unlike the superconducting magnetic levitation, the phase-conducting magnetic levitation causes injury by using a repulsive force (or attraction force) caused by magnetism at a normal temperature, and a phase-induced magnetic levitation (EMS, Electromagnetic Suspension (Levitation) ), Rebound flotation and inductive flotation (EDS, Electrodynamics Suspension (Levitation)).

The suction floating method utilizes the property of attracting an electromagnet to the magnetic body by placing a magnetic material such as iron on the primary side (primary or stator) and placing the electromagnet on the lower part of the magnetic body, and between the magnetic body and the electromagnet. The automatic control device is installed to maintain a constant interval of the float is to rise stably.

The repulsion floating method utilizes repulsion when the same polarities of magnets are close to each other. The repulsive floating method uses a repulsive force generated between a permanent magnet that generates magnetic force and an electromagnet whose magnetic force is controlled by a predetermined control device.

Inductive floatation is characterized by the fact that the line of magnetic force passing through a coil made of several turns of a conductor such as copper changes over time (the electromotive force thus created is called the transformer electromotive force), and when a given conductor crosses the line of magnetic force. (The electromotive force thus produced is called speed electromotive force), and a predetermined electromotive force is generated, which is caused to float by using an electromagnetic induction phenomenon in which current flows through the conductor.

Representative energy conversion systems using the magnetic levitation force, such as a magnetic levitation train and a magnetic bearing, the magnetic levitation train generates and controls the magnetic repulsive force (or suction force) between the train and the railway tracks, the magnetic repulsive force (or suction force) It is characterized in that to generate a propulsion force through a predetermined propulsion device at the same time while converting to the floating force, the magnetic bearing is characterized in that to support the rotating shaft in the air by using magnetic attraction force or repulsive force.

Maglev trains have been steadily developed by Germany and Japan under government leadership, and German Maglev trains have been developed by various companies such as Siemens and Thyseen in the early 1970s. After the conceptual test of the implementation model, the TR08 was tested through HMB2 (1976), Transrapid (TR) 05 (1979), TR06 (1983), and TR07 (1989). Plans to build a 1300km track between Beijing and Beijing.

Japan has also been developing magnetic levitation trains since the early 1970s. Japan has developed the MLU (Magnetically Levitated U-shape) series of superconducting magnetic levitation trains for ultra high speed and HSST (High Speed Surface Transport) models for medium and low speed. In particular, the superconducting repulsion magnetic levitation train, which has been in development since 1962, has been led by Japan's Railway Technical Research Institute (RTRI) since 1970, and produced the ML-100 in 1972 and 7 km in Miyazaki in 1979. On the test track, the ML-500 recorded a top speed of 517 km / h. In addition, HSST system, which is a phase-conducting magnetic suction type magnetic levitation train for medium to low speeds, has been developed by Japan Airline since 1973 and has been developed by HSST Corporation for more than 25 years.

Magnetic bearing is to minimize the frictional force of the rotating shaft by floating the rotating shaft in the air by using magnetic attraction or repulsive force, and Switzerland, the United States, Japan, etc., mainly in France, actively research the high vacuum turbomolecular pump (Turbo Molecular Pump; TMP), including high speed machine tools such as spindle system, turbo compressor and energy storage flywheel (Flywheel) and heart blood pump has been put to practical use. Magnetic bearings can be used in vacuum or corrosive atmospheres and a wide range of temperatures due to the absence of mechanical friction, wear, low energy loss, semi-permanent life, and no need for lubrication or sealing. In particular, because it is a non-contact bearing, the maximum allowable speed can be greatly increased, and electrical control is possible to maintain the rotational accuracy of the rotating shaft with high accuracy, and to maintain the automatic balancing of the imbalance as well as the vibration of the rotating system with the active control. .

In addition, there is a linear motor (Liner Motor) by using the magnetic force to obtain a propulsion force as described above, the linear motor is a type of electric motor by cutting out the existing rotary motor in the direction of the rotation axis, and the existing rotary motor is a rotary motor force Compared with generating the linear motor, the linear motor generates a thrust which is a pushing force in a linear direction.

However, the linear motor has a structurally finite length compared to a conventional rotary motor that performs infinite continuous motion in the rotational direction, and since the entry end and exit end are structurally present, the leakage magnetic flux ( Leakage Flux) and the Longitudinal End Effect, which causes distortion and loss of energy and degrades its properties, are included. In addition, the loss of thrust and vertical force of the motor by the transverse edge effect, in which energy leakage occurs in the side edge direction, as well as the disadvantage of distorting the distribution and deteriorating operating characteristics. .

In addition, the linear motor has a vertical force is greater than the conventional rotary motor to act on the support device, such as electromagnets, wheels, etc. to increase the weight of the load, in order to solve this problem, essentially increase the air gap (Air-Gap) . However, due to such a large gap, the linear motor inevitably causes an increase in leakage flux, an increase in magnetizing current, and a deterioration in power factor and efficiency, compared to a conventional rotary motor. Done.

That is, the linear motor is useful as a means for obtaining a linear propulsion force by using a magnetic force (for example, a mechanical converter such as a screw, a chain, a gear system, etc. is necessary to obtain a linear motion through a rotary motor, At this time, since the loss of energy and noise due to friction inevitably occur, the linear motor is absolutely superior as a means for obtaining the propulsion force in the linear direction), but the end effect in the longitudinal direction and the transverse edge effect, and Since the leakage flux, the magnetization current, and the power factor and efficiency deteriorate, the linear motors used to obtain propulsion in the existing magnetic levitation train are very inefficient.

An object of the present invention for resolving the above problems is a mover (Mover) and the rotation of the mover made up of at least two or more rotors, comprising a movable body connecting the rotor, and arranged at least two magnetic materials The present invention provides an energy conversion device including a stator made of a fixed conductor fixed to a ground or a predetermined fixture, which is spaced apart from the whole body and the contactless body.

An energy conversion device according to the present invention comprises a mover (Mover) and a rotating body and a moving body of the mover comprising at least two or more rotors, a movable body connecting the rotors, arranged at least two magnetic materials and It is characterized in that it comprises a stator (Stator) made of a non-contact spaced apart, fixed conductor fixed to the ground or a predetermined fixture.

According to the present invention, the mover is characterized in that it further comprises at least one auxiliary rotating body for adjusting the tension (Tension) of the moving body.

According to the invention, the auxiliary rotating body, characterized in that for adjusting the bending angle of the moving body.

According to the invention, the rotating body is characterized in that a predetermined rotary electric motor is connected.

According to the present invention, the rotating body is characterized in that it comprises a circular cross section, a serrated wheel type cross section, or a regular polygonal cross section.

According to the present invention, the movable body is characterized in that the permanent magnet (Permanent Magnet) is arranged at a predetermined interval.

According to the present invention, the movable body is characterized by generating a predetermined floating force and a driving force at the same time while rotating in a state spaced apart from the predetermined fixed conductor at a predetermined interval.

According to the present invention, the movable body is characterized in that the linear movement in the section facing the fixed conductor.

According to the present invention, the movable body is characterized by performing a relative motion (Relative Motion) at a predetermined speed with the fixed conductor in a predetermined linear motion section.

According to the present invention, when the movable body is made of a predetermined chain, it is characterized in that a portion of the plurality of connecting rings constituting the chain arranged in a permanent magnetic material.

According to the present invention, the movable body is characterized in that it is made of a nonmagnetic material.

According to the invention, the fixed conductor is characterized in that the conductor plate.

Hereinafter, with reference to the accompanying drawings and description will be described in detail the operating principle of the preferred embodiment of the present invention. However, the drawings and the following description shown below are for the preferred method among various methods for effectively explaining the features of the present invention, the present invention is not limited only to the drawings and description below. In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the present invention, the technical spirit of the present invention is determined by the claims of the present invention.

1 is a view showing a two-dimensional model of the eddy current floating and propulsion integrated energy converter according to a preferred embodiment of the present invention.

* Referring to Figure 1, the floating and propulsion integrated energy converter connects at least two or more of the rotating body 100 and the rotating body 100 in an endless orbit manner and an infinite number of permanent magnetic material 110 is arranged It is in contact with the primary side (or primary) (Mover) made of the orbital movable body 105 and the rotor 100 and the infinitely orbital movable body 105 of the primary side and on the ground or a fixed fixture It comprises a secondary side (Secondary, or stator) made of a fixed conductor 115 is fixed, the primary side and the secondary side in a stationary state maintains non-contact.

As a preferred embodiment of the present invention, if the energy converter shown in FIG. 1 is mounted on a magnetic levitation train, the secondary side corresponds to a railway or a track on which the magnetic levitation train operates, and the primary side is the magnetic levitation train. In the rail or tracks facing the train is preferably provided at the bottom.

A predetermined rotary motor is connected to the rotating body 100 on the primary side, and rotates in a predetermined direction (for example, clockwise or counterclockwise) about the rotating shaft by the rotary motor. The rotating body 100 connected through the moving member 105 is characterized in that to rotate in the same direction.

An endless track type moving body 105 connecting the rotating body 100 in an infinitely orbital manner moves along a predetermined trajectory by a rotational movement of the rotating body 100, as shown in FIG. 1. The linear motion in the section facing the 115, and the relative motion (Relative Motion) at a predetermined speed with the fixed conductor 115 in the linear motion section.

According to the preferred embodiment of the present invention, the permanent magnet 110 is arranged in the infinitely movable body 105, the permanent magnetic material 110 is the infinitely movable body 105 and the fixed conductor ( The relative speed between the fixed conductor 115 and the fixed conductor 115 continues to move relative to each other, and at this time, the secondary conductor fixed side 115 has an eddy current caused by the speed of the electromotive force relative to the relative speed. Induced.

According to the present invention, the Lorentz force is generated on the primary side by the flux density caused by the eddy current and the permanent magnetic material 110 arranged in the infinitely moving object 105. Flotation force in the vertical direction and the driving force in the opposite direction of the relative movement direction of the permanent magnetic material 110 is continuously generated. At this time, the floating force increases as the relative speed between the permanent magnetic material 110 on the primary side and the fixed conductor 115 on the secondary side increases, and the permanent magnetic material 110 on the primary side and the secondary side are fixed. As the distance between conductors 115 increases, it decreases in inverse proportion to the square of the distance. In addition, propulsion increases and decreases as the relative speed between the permanent magnetic material 110 on the primary side and the fixed conductor 115 on the secondary side increases and decreases, and the permanent magnetic material 110 on the primary side. As the distance between the fixed conductor 115 and the secondary side increases, it decreases in inverse proportion to the square of the distance as in the case of the flotation force.

Therefore, in order to obtain a constant propulsion force in the energy conversion device as shown in FIG. 1, when the rotary motor connected to the rotating shaft of the rotating body 100 of the primary side at a constant speed, the infinitely movable body 105 And the permanent magnetic material 110 arranged in the crawler-type moving object 105 moves at a constant relative speed with the fixed conductor 115 on the secondary side, and thus the primary side can obtain a constant propulsion force.

In addition, if a constant relative speed is maintained between the permanent magnetic material 110 on the primary side and the fixed conductor 115 on the secondary side as described above, the primary side is injured by the floating force caused by Lorentz force on the primary side. Done. At this time, the primary side causes the external force to act on the secondary side again (for example, downward in FIG. 1) by the earth gravity, and when the distance between the primary side and the secondary side approaches the primary side, the primary side Due to the increase in repulsion force proportional to the square of the distance between the and the secondary side, the flotation force increases in the direction opposite to the earth center direction on the primary side. When the distance between the primary side and the secondary side is increased by the floating force as described above, the repulsive force between the primary side and the secondary side is reduced, and the distance between the primary side and the secondary side is again caused by gravity in the earth center direction. You get closer.

According to the present invention, the primary side and the secondary side are caused by the repulsive force generated at a constant relative speed between the permanent magnetic material 110 of the primary side and the fixed conductor 115 of the secondary side and gravity in the direction of the earth's center. Stable rise in equilibrium with.

2, 3, and 4 show a two-dimensional model of an eddy current floating and propulsion integrated energy conversion device according to another embodiment extending from the present invention.

FIG. 2 is for the case where one more rotor is added to the primary side of the two-dimensional model of the eddy current floating and propulsion integrated energy converter of the preferred embodiment shown in FIG.

According to a preferred embodiment of the present invention, the crawler type moving body 105 of the eddy current floating and propulsion integrated energy converter is made of a flexible belt, when the plurality of permanent magnetic material 110 is arranged on the belt, The crawler type moving body 105 is stretched by its own omission. FIG. 2 can adjust the tension of the crawler-type movable body 105 as described above through the third rotating body 100, thereby preventing the crawler-type movable body 105 from sagging by itself. Can be.

In addition, the infinitely movable body 105 is connected to the rotating body 100 in an infinitely orbital manner, the infinitely movable body 105 by the permanent magnetic material 110 arranged on one surface of the movable body. When the angle is bent more than a certain angle, the adhesion between the permanent magnetic material 110 and the infinitely movable body 105 (for example, the fixing force by the bolt when fixed through the bolt) falls or the infinitely movable body 105 2) may adversely affect the movement of Figure 3, it is possible to more gently adjust the angle of bending of the crawler-type mobile body 105 through the third rotating body (100).

FIG. 3 illustrates the machining of the rotor 100 on the primary side of the two-dimensional model of the eddy current floating and propulsion integrated energy converter of the preferred embodiment shown in FIG. This is for the case where the endless track type moving body 105 connected in the endless track manner is processed in the form of a timing belt so as to move by the gear.

According to a preferred embodiment of the present invention, the crawler type moving body 105 of the eddy current floating and propulsion integrated energy converter is made of a flexible belt, and the moving speed of the crawler type moving body 105 is the rotating body 100. It is determined by the rotational speed of), in order to obtain the energy efficiency of the energy converter and the accurate movement speed of the crawler-type movable body 105, the surface of the crawler-like movable body 105 and the rotor 100 in contact with each other. The friction force between them should be infinite. However, since the friction force cannot be infinite, as shown in FIG. 3, the energy is formed by using the rotary body 100 having a cog wheel shape and the infinitely moving member 105 having a timing belt type that is caught by the cog wheels. Maximizing the energy efficiency of the converter, it is possible to obtain the accurate movement speed of the crawler type moving body 105.

4 is a cross-sectional view of the rotating body 100 of the two-dimensional model of the eddy current floating and propulsion integrated energy converter of the preferred embodiment shown in FIG. This is a case where one permanent magnetic material 110 arranged on the crawler-type moving object 105 is arranged one by one side of the regular 12 hexagon during the rotation of the 100.

According to a preferred embodiment of the present invention, the infinitely movable body 105 of the eddy-current floating and propulsion integrated energy converter is made of a flexible belt, a plurality of permanent magnetic material 110 in the infinitely movable body 105. When the rotor 100 is circular, the permanent magnets 110 of the permanent magnets arranged in the caterpillar moving body 105 at a portion where the rotor 100 and the caterpillar moving body 105 abuts. Adhesion may be deteriorated. As shown in FIG. 4, when a square 12 having 12 sides is used, the adhesion of the permanent magnetic material 110 may be maintained as it is.

In addition, as shown in FIG. 4, since the frictional force between the rotational body 100 and the infinitely movable moving object 105 is greatly increased at the vertex of the regular hexagonal shape, the frictional force is greatly increased. Energy efficiency is increased than in the case of FIG.

5 is a diagram illustrating an analytical model of an eddy current floating and propulsion integrated energy conversion device according to a preferred embodiment of the present invention.

Referring to FIG. 5, the primary endless track moving body 105 is a nonmagnetic material, and has a permeability that does not adhere to a permanent magnet such as aluminum, stainless steel, wood, and / or rubber, which is similar to air. It consists of, and consists of a permanent magnetic material 110 magnetized perpendicularly to the fixed conductor 115 of the secondary side. In addition, the fixed conductor 115 on the secondary side has a high conductivity in order to increase the generation of eddy currents, and a conductor plate capable of canceling the permanent magnet and the adhesive force in a stationary state (for example, including a similar permeability of air). It is composed of aluminum and / or copper.

When the primary side moves at a speed of V while the secondary side is fixed, a velocity electromotive force is induced on the secondary side to generate an eddy current. At this time, the magnetic polarity due to the eddy current generated on the secondary side has a phase difference of 90 ° electrically with the magnetic polarity made by the permanent magnet on the primary side, and is shown in FIG. 5 by the Lorentz force equation. Propulsion and flotation occur simultaneously.

Representative methods for analyzing the electromagnetic characteristics in the analytical model of the eddy current floating and propulsion integrated energy conversion device as shown in FIG. 5 include a spatial harmonic analysis and an analytical model using an electromagnetic theory. Finite Element Analysis is divided into finite elements and analyzed using the Shape Function and Boundary Condition of each element.

Hereinafter, in order to help understand the technical idea of the present invention, the process of simultaneously obtaining the floating force and the driving force in the eddy current floating and propulsion integrated energy converter is analyzed using the spatial harmonic method and the finite element method, and the electrons by the two analysis methods The miracle characteristic values are compared and explained.

For convenience of interpretation of the eddy current floating and propulsion integrated energy converter proposed by the present invention, the following assumptions are made, which is clearly understood by those skilled in the art to which the following assumptions are valid. Could be.

I. The primary side moves linearly at a speed of V in the x-direction.

II. All permanent magnets have only x or y-direction magnetization components.

III. All currents have only z-direction components. This coincides with the direction of the Vector Magnetic Potential.

Ⅳ. The core permeability is isotrope.

In FIG. 5, the permanent magnetic material 110 is a source for generating magnetomotive force in the eddy-current floating and propulsion integrated energy converter of the present invention as a source of Fourier water supply of magnetization of the permanent magnet as shown in Equation (1). Can be deployed in (Fourier Series).

 M_y = 4M_0 over nπsin (nπk_τ over 2) e ^ jβx

    (One)

Further, in Fig. 5, the governing equation for each region is expressed as Eq. (2) based on Maxwell's equation.

 TRIANGLED TIMES (TRIANGLED TIMES r atop A_i) = mu _i TRIANGLED TIMES r atop M

     (2.a)

 TRIANGLED TIMES (TRIANGLED TIMES r atop A_i) = sigma _i mu _i [r atop U TIMES (TRIANGLED TIMES r atop A_i)]

      (2.b)

Where Eq. (2.a) is the governing equation in the region containing the permanent magnet, and Eq. (2.b) is the general form of the governing equation in all domains except the permanent magnet. From the governing equation of equation (2), the magnetic vector potential of each region is calculated as in equation (3).

A_zi = (C_i e ^ alpha _i y + D_i e ^ -alpha _i y) e ^ jkx + j over k M_yi e ^ jkx

     (3.a)

A_zi = (C_i e ^ alpha _i y + D_i e ^ -alpha _i y) e ^ jkx

    (3.b)

According to the magnetic vector potential and definition of equation (3), the magnetic flux density of each region can be expressed as in equation (4).

B_ chii = alpha _i [C_i e ^ alpha_i y-D_i e ^ -alpha_i y] e ^ jk_i x  , B_ yi = a-jk _i [C_i e ^ alpha_i y + D_i e ^ -alpha_i y] e ^ jk_i x + S_Bi

         (4)

The boundary condition is used to find the undefined coefficient in the magnetic flux density equation of each region. The boundary conditions satisfying all the areas are summarized as follows.

1. There is no vector magnetic potential at y = ± ∞.

2. The normal magnetic flux density B at the interface of each region is continuous.

3. The intensity H of the tangential component magnetic field at the boundary of each region is continuous.

The system matrix of the analytical model is obtained from the boundary conditions and governing equations as shown in Eq. (5).

[T] [X] = [M]

       (5)

Here, each determinant can be generalized as follows.

[T] = BMATRIX P_1 (1) & P_2 (1) & P_3 (1) & P_4 (1) & 0 & 0 & 0 & 0 & L & 0 # Q_1 (1) & Q_2 (1) & Q_3 (1) & Q_4 (1) & 0 & 0 & 0 & 0 & L & 0 # 0 & 0 & P_1 (1) & P_2 (1) & P_3 (1) & P_4 (1) & 0 & 0 & L & 0 # 0 & 0 & Q_1 (1 ) & Q_2 (1) & Q_3 (1) & Q_4 (1) & 0 & 0 & L & 0 # M & M & M & M & 0 & M & M & M & M & M # 0 & 0 & L & L & L & L & P_1 (N-1) & P_2 (N-1) & P_3 (N-1) & P_4 (N-1) # 0 & 0 & L & L & L & L & Q_1 (N-1) & Q_2 (N-1 ) & Q_3 (N-1) &

[X] = [C_1 D_1 C_2 D_2 L C_N D_N] ^ T [M] = [00L-M (y) over jk 0 M (y) over jk 0 L 00] ^ T

By using Equation (5), the undetermined coefficient can be derived from the magnetic flux density equation of each region, and the force of the floating and propulsion integrated energy converter can be calculated using the pore flux density and the Maxwell Stress Tensor of Maxwell. Maxwell's stress tensor can be expressed as a determinant such as (6).

T ^ * = 1 over mu _0 BMATRIX B _x ^ 2-1 over2 LEFT | B RIGHT ^ 2 & B_x B_y & B_x B_z # B_y B_x & B _y ^ 2-1 over2 LEFT | B RIGHT | ^ 2 & B_y B_z # B_z B_x & B_z B_y & B _z ^ 2-1 over2 LEFT | B RIGHT | ^ 2

           (6)

The action force can be obtained by integrating Eq. (6), and is expressed as Eq. (7).

F = INT _ V TRIANGLED CDOT T ^ * dV = INT _ S T ^ * TIMES dS

           (7)

By analyzing the action force calculated as in Equation (7), it is possible to calculate the flotation force and the propulsion force as in Equation (8).

F_i = w_s p over 2 mu _o INT _ 0 ^ 2 tau Re (B_t B_n) dx

                  (8.a)

F_n = w_s p over 2 mu _o INT _ 0 ^ 2 tau (| B_n | ^ 2-| B_t | ^ 2) dx

               (8.b)

Formula (8) has shown the force characteristic formula of this analysis model. In the analytical model, when the primary side proceeds in the x-axis direction at the velocity of V, the eddy current is induced on the secondary side by the velocity electromotive force. This eddy current is assumed to have only z-axis components in our analytical model, which is generally a valid assumption. In addition, since the magnetic field strength (H) is formed by the Ampere's Law in the place where the current flows, the fixed conductor 115 of the secondary side serves as a reaction plate.

Therefore, the Lorentz force acts by the magnetic flux density by the permanent magnet and the eddy current generated in the secondary fixed conductor 115, and this force has a component as shown in Equation (9).

F_n = J TIMES B = BMATRIX a_x & a_y & a_z # 0 & 0 & J_z # B_x & B_y & 0 = -J_z B_y a_x + J_z B_x a_y

              (9)

The value of integrating equation (9) in the analytical model is consistent with the value in equation (8). Therefore, the equations for the force characteristics of the analytical model are the same.

That is, the eddy currents induced on the secondary side have only z-components, and the magnetic flux density is x-component (in the analysis model, where x-component is called Tangential component) and y-component (in the analysis model, In other words, the y-component has only a normal component. Therefore, the forces of the x-component and the y-component act as shown in Equation (9).

FIG. 6 is a diagram showing the result of comparing the force characteristics of the eddy current floating and propulsion integrated energy converter according to the preferred embodiment of the present invention by using the spatial harmonic method and the finite element method.

Particularly, in FIG. 6, the force characteristics of the eddy current floating and propulsion integrated energy converter are calculated by the finite element method using the results of the force characteristics calculated through the spatial harmonic method as shown in FIG. 5 and Maxwell 2D of Ansoft. The force characteristic results are compared.

Those skilled in the art to which the present invention pertains, with reference to this figure 6 through the force characteristics and finite element method of the eddy current floating and propulsion integrated energy converter calculated through the spatial harmonic method as shown in FIG. It will be clearly understood that the force characteristics of the resulting eddy current floating and propulsion integrated energy converters are very well matched.

Referring to FIG. 6, it can be seen that as the relative speed between the primary side and the secondary side increases, the floating force of the eddy current floating type and the propulsion integrated energy converter continues to increase, and the driving force increases and then decreases.

According to the present invention, when the eddy current type floating and propulsion integrated energy converter corresponding to the technical idea of the present invention is mounted on the magnetic levitation train, stable injury can be performed without a separate control device, thereby causing the injury of the magnetic levitation train and The propulsion system is simplified, the volume and area occupied by the flotation and propulsion system are reduced, and the manufacturing cost of the magnetic levitation train can be reduced.

In addition, when the eddy current floating and propulsion integrated energy converter is used in a vehicle, energy consumption of the vehicle may be reduced by optimizing energy conversion efficiency. In general, the energy efficiency of the linear motor to obtain the propulsion force is about 50%, while the energy efficiency of the rotary motor is about 93%, the eddy current floating and propulsion integrated energy converter corresponding to the technical idea of the present invention is a linear motion Energy efficiency by the has the effect of reducing the energy efficiency of the rotary motor.

Claims (12)

At least two rotors, A mover (Mover) which connects the rotating body and comprises a moving body in which at least two magnetic materials are arranged; And And a stator (Stator) formed of a fixed conductor fixed to the ground or a predetermined fixture, which is spaced apart from the rotating body and the moving body of the mover. The method of claim 1, wherein the mover, Energy conversion device characterized in that it further comprises at least one auxiliary rotating body for adjusting the tension (Tension) of the moving body. The method of claim 2, wherein the auxiliary rotating body, Energy conversion device, characterized in that for adjusting the bending angle of the moving body. The method of claim 1, wherein the rotating body, Energy conversion device characterized in that the predetermined rotary motor is connected. The method of claim 1, wherein the rotating body, An energy converter comprising a circular cross section, a serrated wheel cross section, or a regular polygonal cross section. The method of claim 1, wherein the moving body, An energy converter characterized in that the permanent magnets (Permanent Magnet) arranged at a predetermined interval. The method of claim 1, wherein the moving body, Energy conversion device, characterized in that for generating a predetermined floating force and a driving force at the same time while rotating in a state spaced apart from a predetermined fixed conductor. The method of claim 1, wherein the moving body, Floating and propulsion integrated energy converter characterized in that the linear movement in the section facing the fixed conductor. The method of claim 1, wherein the moving body, Energy conversion device characterized in that for performing a relative motion (Relative Motion) at a predetermined speed with the fixed conductor in a predetermined linear motion section. The method of claim 1, wherein the moving body, In the case of a predetermined chain, And a portion of the plurality of connecting rings forming the chain as a permanent magnetic material. The method of claim 1, wherein the moving body, An energy converter comprising a nonmagnetic material. The method of claim 1, wherein the fixed conductor, An energy converter comprising a conductor plate.

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