Power generation equipment

Abstract

To provide a power generation device capable of making use of electromagnetic induction from an electric wire to generate power efficiently.SOLUTION: A power generation device includes a coil unit that acquires AC power by electromagnetic induction through a coil using a magnetic flux generated by a wire for supplying power, a ferromagnetic body provided movably with respect to the coil unit, a power unit that uses natural energy as a power source to generate power, and a moving mechanism unit that moves a ferromagnetic body in the vicinity of the coil unit on the basis of the power generated by the power unit to change a relative location relationship between the coil unit and the ferromagnetic body.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a power generating device that generates power by electromagnetic induction using a magnetic field generated by a current flowing through an electric wire. [Background technology]

[0002] Patent Document 1 discloses a conventional power generating device that can obtain power from an electric wire by electromagnetic induction. The power generating device disclosed in Patent Document 1 uses a coil unit in which a coil is formed on a core made of a ring-shaped magnetic material. The coil is wound in a spiral shape around the outer circumferential surface of the core. A power transmission line is inserted into the hollow part inside the core. A magnetic field generated by an AC current flowing through the power transmission line generates AC power in the coil by electromagnetic induction. The AC power generated in the coil is converted to DC power via a rectifier circuit, and is further output to a load as DC power of a constant voltage by a Zener diode. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-43619 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the conventional power generating device disclosed in Patent Document 1 has the following two problems. The first problem is that the arrangement of the power transmission line and the core is limited by the arrangement of the power transmission line passing through the hollow part of the core. The second problem is related to the first problem and concerns the prevention of ground faults caused by the power generating device including a grounded circuit. In the second problem, when considering installing a power generating device on a power transmission line with a transmission voltage of kV class, in particular, there is a risk of a ground fault occurring if the power transmission line and the core come into contact with each other. Therefore, measures are required to maintain a non-contact arrangement between the power transmission line and the core and ensure insulation. Such measures may require insulating parts such as insulators, may be physically large, or may affect power generation as a result of the measures. As a result, these problems have hindered efficient power generation using electromagnetic induction from the electric wire.

[0005] SUMMARY OF THE PRESENT EMBODIMENT In view of the above, an object of the present invention is to provide a power generating device capable of efficiently generating power by utilizing electromagnetic induction from an electric wire. [Means for solving the problem]

[0006] The power generating device of the present invention includes a coil unit that utilizes a magnetic flux generated by an electric wire that supplies power to obtain AC power by electromagnetic induction through a coil, a ferromagnetic body that is movably provided with respect to the coil unit, a power unit that generates power using natural energy as a power source, and a movement mechanism that moves the ferromagnetic body near the coil unit based on the power generated by the power unit to change the relative positional relationship between the coil unit and the ferromagnetic body. The moving mechanism moves the ferromagnetic body so that the ferromagnetic body goes around the coil unit, the ferromagnetic body has a truncated cone shape, and the ferromagnetic body is arranged so that a small circular surface of the truncated cone faces the coil unit. It is characterized by the following. In addition, the power generation device of the present invention comprises a coil unit that utilizes magnetic flux generated by an electric wire that supplies power to obtain AC power by electromagnetic induction through a coil, a ferromagnetic body that is movably arranged relative to the coil unit, a power unit that generates power using natural energy as a power source, a moving mechanism that moves the ferromagnetic body near the coil unit based on the power generated by the power unit, thereby changing the relative positional relationship between the coil unit and the ferromagnetic body, and a diamagnetic body, wherein the moving mechanism rotates the ferromagnetic body and the diamagnetic body so that they orbit around the coil unit. Effect of the Invention

[0007] According to the power generating device of the present invention, the power generating device is placed under the influence of the magnetic flux generated by the electric wire, and the ferromagnetic material is moved near the coil unit based on the power of the power unit, thereby changing the magnetic flux density inside the coil, thereby enabling efficient power generation using electromagnetic induction from the electric wire. [Brief description of the drawings]

[0008] [Figure 1] 1 is a schematic cross-sectional view showing a power generating device according to the present invention; [Diagram 2] This shows the ferromagnetic body and the coil unit inside the cylindrical case of the device in FIG. 1 as viewed from the top. [Diagram 3] FIG. 2 is a diagram illustrating an example of an installation environment of the device of FIG. 1. [Figure 4] 2 is a diagram showing a change in magnetic flux density penetrating a coil with respect to the positional relationship between the coil and the ferromagnetic body of the device in FIG. 1 every time the ferromagnetic body makes a 90-degree turn. FIG. [Diagram 5] FIG. 2 is a diagram showing an example of the arrangement of ferromagnetic bodies, diamagnetic bodies, and coil units. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0010] Fig. 1 shows the basic configuration of a power generating device 1 according to the present invention. Such power generating device 1 includes a power generating unit 2 and a circuit unit 3. The power generating unit 2 is a part that converts natural energy into AC power and outputs it. In this embodiment, wind power is used as the natural energy. The circuit unit 3 converts the AC power output by the power generating unit 2 into DC power, and supplies the DC power to a load circuit and a storage battery, which will be described later.

[0011] The power generation unit 2 has a cylindrical case 10, and a wind turbine support unit 10a on the circular upper surface of the cylindrical case 10. The wind turbine support unit 10a may be formed integrally with the cylindrical case 10. The wind turbine support unit 10a is columnar, and has a space inside that communicates with the inside of the cylindrical case 10. The wind turbine support unit 10a also has a rotating unit 12 on its upper part that rotatably supports a wind turbine 11 that receives wind force. The wind turbine 11 and the rotating unit 12 form a power unit that generates power. Specifically, the rotating unit 12 has a rotating shaft 13 on its upper part, which is parallel to the circular upper surface of the cylindrical case 10, the wind turbine 11 is fixed to the tip of the rotating shaft 13, and rotates in conjunction with the rotation of the wind turbine 11.

[0012] The rotating part 12 also has a power transmission part 14 for transmitting the rotation of the rotating shaft 13 to the rotating part 15 in the cylindrical case 10. The power transmission part 14 transmits the rotation of the rotating shaft 13 to the rotating shaft 16 of the rotating part 15. Although not clearly shown, the power transmission part 14 includes, for example, a chain or a belt, and the rotating shafts 13 and 16 are provided with pulleys and gears into which the chain or belt is fitted to rotate. The rotating shafts 13 and 16 are parallel to each other. The rotating part 15 is fixed to the ceiling surface in the cylindrical case 10 and holds the rotating shaft 16 rotatably. The rotating part 15 has a roller 17 that rotates together with the rotating shaft 16. The roller 17 is made of, for example, rubber or plastic.

[0013] A rotating unit 20 is fixed to the center of the ceiling surface inside the cylindrical case 10. The rotating unit 20 has a rotating shaft 21 extending in a direction perpendicular to the ceiling surface inside the cylindrical case 10, and holds the rotating shaft 21 so that it can rotate freely. A disk-shaped rotating disk 22 is fixed to the end of the rotating shaft 21. The rotating disk 22 is parallel to the ceiling surface inside the cylindrical case 10, and rotates together with the rotating shaft 21. The outer peripheral surface of the roller 17 abuts against the upper surface of the rotating disk 22, so that, for example, frictional force is generated between the rotating disk 22 and the roller 17 when the roller 17 rotates. This forms a rotation mechanism in which the rotation of the roller 17 rotates the rotating disk 22 around the rotating shaft 21.

[0014] In addition, if the rotation of roller 17 rotates turntable 22, for example, the axial direction of rotating shaft 16 may be converted to an orthogonal direction using a worm gear so that the outer peripheral surface of roller 17 abuts against the side of turntable 22.

[0015] Within the cylindrical case 10, an arm 23 is provided on the outer periphery of the rotating platen 22, extending downward. The arm 23 may be formed integrally with the rotating platen 22. A ferromagnetic body 24 such as a magnet is fixed to the tip of the arm 23. When the rotating platen 22 rotates, the ferromagnetic body 24 moves in a circular orbit. The ferromagnetic body 24 is shaped like a truncated cone, with the large circular surface of the truncated cone facing the inner surface of the cylindrical case 10 and the small circular surface facing the center of the cylindrical case 10 (the side of a coil 25 described later). The power transmission unit 14, the rotating units 15, 20, the rotating shafts 16, 21, the roller 17, the rotating platen 22, and the arm 23 constitute a moving mechanism.

[0016] The shape of the ferromagnetic body 24 is not limited to a truncated cone, but may be other shapes such as a truncated pyramid, as long as the ferromagnetic body 24 is capable of inducing magnetic flux to the coil 25 and increasing the magnetic flux density penetrating the coil 25.

[0017] Furthermore, within the cylindrical case 10, a coil 25 is disposed below the rotating disk 22. The coil 25 is wound in a spiral shape around a cylindrical bobbin 26 to form a coil unit. The coil 25 is disposed at approximately the same position as the ferromagnetic body 24 in the vertical direction within the cylindrical case 10, and the ferromagnetic body 24 revolves around the coil 25 when the rotating disk 22 rotates.

[0018] FIG. 2 shows the inside of the cylindrical case 10 viewed from the top side, and a coil unit including a ferromagnetic body 24, a coil 25 and a bobbin 26.

[0019] The coil 25 is fixed to the cylindrical case 10 together with the bobbin 26 by two fasteners 27. This fixation places the cylindrical bobbin 26 so that its cylindrical axis is perpendicular to the cylindrical axis of the cylindrical case 10. The outer diameter of the bobbin 26 is the same as (or approximately equal to) the diameter of the small circular surface of the ferromagnetic body 24 having a truncated cone shape.

[0020] The two fixtures 27 extend outside the cylindrical case 10 and are connected to the circuit unit 3. The two fixtures 27 are made of an insulating material and cover the lead wires 25a, 25b of the coil 25. The lead wires 25a, 25b are wires connected to both ends of the coil 25, respectively, and output the AC voltage generated between both ends of the coil 25.

[0021] The circuit section 3 includes a bridge diode 31, a power supply circuit 32, a storage battery 33, and a load circuit 34 in a circuit case 35. The input of the bridge diode 31 is connected to the leads 25a and 25b, and the bridge diode 31 performs full-wave rectification on the AC voltage supplied via the leads 25a and 25b to convert it into a DC voltage. The power supply circuit 32 is connected to the output of the bridge diode 31. The power supply circuit 32 is a constant voltage circuit that includes, for example, a smoothing circuit (not shown) having a Zener diode and a capacitor, and stabilizes the output voltage of the bridge diode 31 to a predetermined constant voltage. The power supply circuit 32 is connected to the storage battery 33 and the load circuit 34. A DC voltage is applied from the power supply circuit 32 to the storage battery 33 and the load circuit 34.

[0022] In a power generating device configured as described above, when wind turbine 11 rotates due to wind power, the rotation is transmitted to rotating shaft 13, and the rotation of rotating shaft 13 is transmitted to rotating shaft 16 via power transmission unit 14. The rotation of rotating shaft 16 rotates roller 17, which in turn rotates rotating disk 22 together with rotating shaft 21. The rotation of rotating disk 22 causes ferromagnetic body 24, which is attached to rotating disk 22 via arm 23, to revolve in a circular orbit surrounding coil 25.

[0023] Fig. 3 illustrates an example of an environment in which the power generating device 1 is placed. The power generating device 1 is under the influence of wind 41 and a magnetic field generated by a power transmission line 42. In Fig. 3, the magnetic field is shown as a magnetic flux 43 that affects the power generating device 1. Note that the power generating device 1 is not limited to being placed in a power transmission line, and may be placed in a magnetic field generated by electric wires other than a power transmission line or other external factors.

[0024] 4(A) to (D) show the change in magnetic flux density penetrating coil 25 with respect to the positional relationship between coil 25 and ferromagnetic body 24 every time ferromagnetic body 24 rotates 90 degrees around circular orbit 50. Each of Figs. 4(A) to (D) shows ferromagnetic body 24 and coil 25 as viewed from the top side of cylindrical case 10. For ease of explanation, the magnetic flux direction of magnetic flux 51 is set to be a straight line.

[0025] 4(A) shows a first positional relationship in which the ferromagnetic body 24 faces one end side of the coil 25 (one circular open end side of the bobbin 26). The first positional relationship is a positional relationship in which the ferromagnetic body 24 and the coil 25 are arranged in that order in the magnetic flux direction. In the first positional relationship, the ferromagnetic body 24 attracts the magnetic flux 51 and guides it to the coil 25, so that the magnetic flux density penetrating the coil 25 becomes the highest.

[0026] 4(B) shows a second positional relationship in which the ferromagnetic body 24 moves 90 degrees leftward on a circular orbit 50 from the first positional relationship and faces the coil 25 on the side surface of the bobbin 26. In the second positional relationship, the magnetic flux 51 advances to the coil 25 without being affected by the ferromagnetic body 24, so that the magnetic flux density of the coil 25 becomes the lowest.

[0027] 4(C) shows a third positional relationship in which the ferromagnetic body 24 has further moved 90 degrees leftward on the circular orbit 50 from the second positional relationship, and the ferromagnetic body 24 faces the other end side of the coil 25 (the other circular opening end side of the bobbin 26). The third positional relationship is a positional relationship in which the coil 25 and the ferromagnetic body 24 are arranged in that order in the magnetic flux direction. In the third positional relationship, the ferromagnetic body 24 is located downstream of the coil 25 in the flow of the magnetic flux 51, so that the ferromagnetic body 24 attracts a small amount of the magnetic flux 51. Therefore, the magnetic flux density penetrating the coil 25 is higher than in the third positional relationship, but lower than in the first positional relationship.

[0028] 4(D) shows a fourth positional relationship in which the ferromagnetic body 24 moves another 90 degrees leftward on the circular orbit 50 from the third positional relationship and faces the coil 25 on the side surface of the bobbin 26. The fourth positional relationship is the same as the second positional relationship, and in the fourth positional relationship, the magnetic flux 51 advances to the coil 25 without being affected by the ferromagnetic body 24, so that the magnetic flux density of the coil 25 becomes the lowest.

[0029] As the ferromagnetic body 24 repeats its revolution around the circular orbit, it repeats the sequence of the first positional relationship, the second positional relationship, the third positional relationship, the fourth positional relationship, and then returning to the first positional relationship. During such changes in positional relationship, a fluctuation occurs in the magnetic flux density penetrating the coil 25. The fluctuation in magnetic flux density causes an induced electromotive force to be generated in the coil 25. The fluctuation in magnetic flux density is greatest between the first positional relationship and the second positional relationship, and between the fourth positional relationship and the first positional relationship. The fluctuation in magnetic flux density also occurs between the second positional relationship and the third positional relationship, and between the third positional relationship and the fourth positional relationship. The greater the fluctuation in magnetic flux density, the greater the induced electromotive force to be generated in the coil 25.

[0030] An induced electromotive force is generated in the coil 25, causing an AC current to flow from the coil 25 through the lead wires 25a and 25b to the circuit section 3. In the circuit section 3, the bridge diode 31 full-wave rectifies the AC current into a DC current to generate DC power, and the DC voltage output from the bridge diode 31 becomes the input voltage for the power supply circuit 32. The power supply circuit 32 smoothes the input DC voltage, and then supplies power to the load circuit 34 or stores the power in the storage battery 33, as necessary.

[0031] In this manner, in the above-described embodiment, the power generating device 1 is installed under the influence of the magnetic flux generated by the power transmission line 42, and the ferromagnetic body 24 is rotated in a circular orbit surrounding the coil 25 using wind as a power source, thereby changing the magnetic flux density inside the coil 25, so that it is possible to efficiently generate power using electromagnetic induction from the power transmission line 42. Therefore, it is possible to obtain an effect that the power generating device 1 can be installed at any location as long as it is under the influence of the magnetic flux of the power transmission line. In addition, when the power generating device 1 is installed near a kV-class power transmission line, it is possible to obtain an effect that it can be installed without insulating the device using insulating members such as insulators.

[0032] Furthermore, according to the embodiment described above, since the ferromagnetic body 24 has a truncated cone shape, the ferromagnetic body 24 can induce magnetic flux to the coil 25, thereby increasing the magnetic flux density penetrating the coil 25. In particular, the magnetic flux density is greatest in the first positional relationship in which the small circular surface side of the truncated cone ferromagnetic body 24 faces the end of the coil 25. Therefore, by having the ferromagnetic body 24 go around the coil 25, the change in magnetic flux density inside the coil 25 can be increased, and power generation can be performed more efficiently.

[0033] In the above embodiment, wind power is used as the power for rotating the ferromagnetic body 24 in a circular orbit surrounding the coil 25. However, other natural energy such as wave power, tidal power, or flowing water power may also be used for rotating the ferromagnetic body 24.

[0034] In the above embodiment, the ferromagnetic body 24 rotates inside the cylindrical case 10, but the ferromagnetic body 24 may be fixed to the cylindrical case 10 and the cylindrical case 10 itself may be rotated. In this case, the cylindrical case 10 itself functions as a windmill, while the coil 25 is installed on the rotating shaft of the windmill so as not to rotate.

[0035] Furthermore, in the above embodiment, the ferromagnetic body 24 rotates in a horizontal plane, but it is also possible to adopt a rotation in another direction, such as a vertical plane.

[0036] Furthermore, in the power generating device of the present invention, as shown in Fig. 5(A)-(C), the number of ferromagnetic bodies can be increased, diamagnetic bodies can be introduced, the shape of the coil can be changed, the shape of the ferromagnetic body and the coil can be interchanged, or the target of rotation of the ferromagnetic body and the coil can be interchanged. Fig. 5(A) shows an example in which a ferromagnetic body 62, a diamagnetic body 63, a ferromagnetic body 64, and a diamagnetic body 65 are arranged at 90 degree intervals on a circular orbit 60 surrounding a coil 61 and rotated by a rotation mechanism unit (not shown). Fig. 5(B) shows an example in which four coils 71-74 are fixedly arranged at 90 degree intervals, and a ferromagnetic body 75 and a diamagnetic body 76 arranged orthogonally to each other inside the coils 71-74 rotate in the direction indicated by the arrow R. The coils 71-74 are formed on bobbins 77-80 in a truncated cone shape, and the bobbins 77-80 are arranged so that their small circular faces face the ends of the ferromagnetic body 75 and the diamagnetic body 76. Figure 5 (C) shows an example in which a coil unit having coils 94-97 formed on a cross-shaped bobbin 93 is provided inside an annular body in which ferromagnetic materials 81-86 and diamagnetic materials 87-92 are arranged alternately, and either the annular body or the coil unit rotates in the direction indicated by arrow S. [Explanation of symbols]

[0037] 1. Power generation equipment 2. Power Generation Division 3 Circuit section 10 Cylindrical case 10a Wind turbine support part 11 Windmill 12, 15, 20 Rotating section 13, 16, 21 Rotation axis 14 Rotation transmission section 17. Lola 22 Turntable 23 Arm 24, 62, 64, 75, 81~86 Ferromagnetic material 25, 71-74, 94-97 Coil 25a, 25b lead wire 26, 75-78, 93 Bobbin 31 Bridge Diode 32 Power supply circuit 33 Storage battery 34 Load circuit 35 Circuit Case 41 Wind 42 Power Lines 43, 51 Magnetic flux 50, 60, R, S circular orbit 63, 65, 76, 87~92 diamagnetic material

Claims

1. a coil unit that utilizes magnetic flux generated by an electric wire that supplies power and obtains AC power through electromagnetic induction via a coil; a ferromagnetic body provided movably relative to the coil unit; A power unit that generates power using natural energy as a power source; a movement mechanism that moves the ferromagnetic body in the vicinity of the coil unit based on the power generated by the power unit, thereby changing a relative positional relationship between the coil unit and the ferromagnetic body, the moving mechanism moves the ferromagnetic body so that the ferromagnetic body circles around the coil unit, The ferromagnetic body has a shape of a truncated cone, and is disposed so that the small circular surface of the truncated cone faces the coil unit. A power generating device characterized by:

2. 2. The power generating device according to claim 1, wherein the coil unit has a circular bobbin around which the coil is wound in a spiral shape, and the end of the circular bobbin is arranged so as to face the small circular surface of the ferromagnetic body of the truncated cone when the coil goes around the ferromagnetic body.

3. 3. The power generating device according to claim 1, wherein the power unit has a windmill that rotates by wind force, and the rotation of the windmill is transmitted to the movement mechanism unit.

4. 4. The power generating device according to claim 1, further comprising a circuit section for converting the AC power acquired through the coil into DC power.

5. 5. The power generating device according to claim 4, wherein the circuit section includes a power supply circuit that charges a storage battery with the DC power and supplies a DC current to a load circuit with the DC power.

6. A coil unit that utilizes magnetic flux generated by an electric wire that supplies power and obtains AC power through electromagnetic induction via a coil; a ferromagnetic body provided movably relative to the coil unit; A power unit that generates power using natural energy as a power source; a movement mechanism that moves the ferromagnetic body in the vicinity of the coil unit based on the power generated by the power unit, thereby changing a relative positional relationship between the coil unit and the ferromagnetic body; A diamagnetic material, The moving mechanism rotates the ferromagnetic body and the diamagnetic body so that the ferromagnetic body and the diamagnetic body go around the coil unit. A power generating device characterized by:

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