Magnetic load reduction power generation device

Abstract

The present invention provides a magnetic load reduction power generation device that can generate electricity with a small amount of power energy by quickly reducing the magnetic load applied to the rotating shaft during power generation. [Solution] The system consists of a disc-shaped first permanent magnet rotor 2a with alternating N and S poles magnetized in multiple poles, a rotation shaft 3 passing through its radial center, an electromagnetic induction primary coil 4a arranged coaxially with the first permanent magnet rotor 2a, a second permanent magnet rotor 2b paired with the first permanent magnet rotor 2a, and an electromagnetic induction primary coil 4b arranged coaxially with the second permanent magnet rotor 2b. The permanent magnet rotors 2a and 2b are mounted on top of each other in the axial direction of the rotation shaft 3 so that the N and S poles alternate in phase, and are arranged so that the magnetic force in the approaching stroke and the magnetic force in the receding stroke move simultaneously on the same line of the rotation shaft 3 to form a load-reducing magnetic field.

Description

Technical Field

[0001] The present invention relates to a power generation device, and particularly to a magnetic load reduction power generation device that utilizes electromagnetic induction to reduce the secondary reverse load received by the rotor during power generation, that is, to reduce the magnetic load applied to the rotation of the rotor and improve the power generation efficiency.

Background Art

[0002] Power generation devices convert thermal energy generated from various energy sources that can be physically or chemically obtained, such as fossil fuels like oil and coal, nuclear power, and in recent years, natural energies such as solar, wind, and geothermal energy, into driving energy such as a boiling water type steam turbine and then into electrical energy. Most of them generate electromotive force by the electromagnetic induction action of the rotor rotation type. This is a common principle regardless of the size of the device or whether it is a DC / AC power generation device.

[0003] A power generation device requires a magnetic body such as a permanent magnet or an electromagnet for forming a magnetic field, and an electromagnetic inductor such as a magnetic coil for generating an electromotive force, and is configured such that one of them can rotate or move with respect to the other as a reference. That is, depending on which of the magnetic body and the conductor rotates or moves, it is divided into a rotating and moving magnetic field type that rotates or moves the magnetic field, and a rotating and moving armature type that rotates or moves the conductor.

[0004] In addition to permanent magnets, electromagnets in which a reaction coil is wound around an iron core and a direct current is passed through are widely used as magnetic fields. Usually, even when an electromagnet is used, the electromotive force generated from a single conductor is not very high. Therefore, it is common for a power generation device to incorporate a large number of conductors and adopt a method of obtaining high power by adding the generated electromotive forces of each conductor in series.

[0005] For example, a two-stroke generator has been proposed that reduces the rotational load during power generation by providing magnetic pole spaces above, below, or to the left and right of the inner diameter magnetic pole pieces on the stator side of the generator, thereby creating an entry stroke and a retraction stroke on the rotor side, and performing two entry and retraction strokes simultaneously with two intersecting 4-pole (N pole, S pole) electrode stone rotors (see Patent Document 1).

[0006] Furthermore, Patent Document 2 proposes a two-stroke generator in which a twin rotor is provided within the inner diameter magnetic pole pieces on the stator side of the generator, in which the outer diameter magnetic pole pieces are arranged alternately in a direction parallel to the output shaft, thereby simultaneously performing the attraction stroke and repulsion stroke of the rotor relative to the stator, and rotating the rotor with low torque even in the repulsator.

[0007] In addition, a three-phase AC generator has been proposed in which the three-phase AC generator body and the auxiliary power unit are connected coaxially, their rotating shafts are rotated by a power unit, three load reduction spaces are provided at equal angular intervals on the fixed terminal side of the three-phase AC AC generator body, and on the rotor side, electromagnets with a total of six poles (N and S poles) are arranged alternately in three locations with two curves each and spaced at equal angular intervals, and on the fixed terminal side of the auxiliary power unit, two or three approximately semicircular permanent magnets of the same shape are arranged facing each other, magnetized radially and with the inner circumference being the same pole, and the rotor provided inside has one end of the N pole and one end of the S pole close to each other at a position close to the inner circumference of the stator, and the other ends of the N and S poles are arranged so that the distance from the inner circumference of the stator gradually increases from the end side, with one set of these permanent magnet combinations provided on opposite sides of the rotating shaft, thereby reducing the drive load of the generator and reducing the fuel consumption of the power unit (see Patent Document 3). [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 9-37528 [Patent Document 2] Japanese Patent Application Publication No. 9-285082 [Patent Document 3] Utility Model Registration No. 3172429 Gazette [Overview of the project] [Problems that the invention aims to solve]

[0009] As mentioned above, conventional power generators generate electricity using a permanent magnet or electromagnet (magnetic coil) where one end is fixed and the other is rotating or moving. However, in this process, a reverse current is generated in the magnetic coil due to electromagnetic induction. As a result, an antimagnetic field is formed that moves in the opposite direction to the rotation, leading to an excessive load on the coil compared to the amount of electricity generated, and thus reducing the power generation efficiency.

[0010] In view of the problems of the prior art described above, the present invention aims to provide a magnetic load reduction power generation device that can generate power with high efficiency by reducing secondary loads other than the mechanical load of the power generation device, namely the load caused by the antimagnetic field generated by the reverse current of the reaction magnetic coil wound around the magnetic induction iron core.

[0011] The inventor, in order to solve the above-mentioned problems of the prior art, conducted intensive research and, as a result, considered a secondary load reduction mechanism that reduces the secondary load that hinders the rotational motion of the rotor by bundling a pair of reaction magnetic coils wound in opposite directions on a pair of iron cores, thereby canceling out the inverse magnetism generated by the reverse current (magnetic induction current) flowing through the rotor's electromotive coil.

[0012] The present invention aims to provide a magnetic load reduction power generation device that can generate electricity with a small amount of power energy by quickly reducing the magnetic load applied to the rotating shaft of the power generation device during power generation. [Means for solving the problem]

[0013] Therefore, the first feature of the magnetic load reduction power generation device of the present invention is that the magnetic field in two strokes, the approach stroke generated by the magnetic attraction force between the stator-side iron core and the rotor-side magnetic pole, and the subsequent separation stroke during power generation due to the magnetic attraction force, are arranged in an even number of stages in phase with N poles and S poles alternately in the axial direction of the rotation shaft, and the magnetic flux effect of the two opposing magnetic fields cancels each other out to form a load reduction magnetic field. The second feature is that the rotor-side magnetic pole is a multi-pole magnetized cylindrical permanent magnet or annular arrangement type permanent magnet.

[0014] Furthermore, a third feature of the magnetic load reduction power generation device of the present invention is that it comprises a rotating shaft, a first annular magnet array in which N poles and S poles are sequentially arranged on the outer circumference of a first rotating orbit with the rotating shaft as the center of rotation, a second annular magnet array in which magnets of opposite polarity to the polarity of the position opposite to the first annular magnet array are sequentially arranged with the rotating shaft as the center of rotation and connected to the first rotating orbit via an insulator, a first magnetic induction primary iron core fixed to the first annular magnet array at a predetermined distance, a plurality of second magnetic induction primary iron cores fixed to the second annular magnet array at a predetermined distance, and a closed magnetic circuit provided between the first and second magnetic induction primary iron cores facing each other along the axis of rotation.

[0015] Furthermore, a fourth feature of the closed magnetic circuit is that it comprises first and second coupled magnetic induction cores, a first reaction coil wound around the first coupled magnetic induction core, and a reaction coil wound around the second coupled magnetic induction core in the opposite direction to the first reaction coil. [Effects of the Invention]

[0016] (1) Since reverse magnetism due to reverse current does not occur when the rotor rotates, magnetic loads other than the weight of the rotor and the mechanical energy of the rotor are eliminated, so that power can be generated efficiently by the mechanical power applied to the propeller. (2) The power generation device of the present invention can improve energy efficiency if it is used as a replacement for conventional generators in various power engines. (3) It can contribute to increasing electricity production and saving energy in power engines, thereby enhancing the economic effectiveness of social infrastructure.

Brief Description of the Drawings

[0017] [Figure 1] (a) according to an embodiment of the present invention is a cross-sectional side view of the main part of a magnetic load reduction power generation device, and (b) is a schematic diagram showing the magnetic arrangement of a permanent magnet rotor. [Figure 2] It is a schematic diagram showing the magnetic flow of a closed magnetic circuit. [Figure 3] (a) showing another embodiment of the present invention is a schematic block diagram, and (b) is a conceptual diagram showing the generation and cancellation of the electromagnetic load of the rotor.

Embodiments for Carrying Out the Invention

[0018] Hereinafter, the configuration and operation of the magnetic load reduction power generation device according to the present invention will be described according to the embodiments shown in the drawings.

Embodiment

[0019] Fig. 1(a) shows a part of the structure of a cross-section parallel to the rotating shaft 3 of the magnetic load reduction power generation device 10 according to the present invention. And in Fig. 1(b), the first permanent magnet rotor (magnet array or multi-pole magnet) 2a arranged coaxially with the rotating shaft 3 and the second permanent magnet rotor (magnet array or multi-pole magnet) 2b paired with the first permanent magnet rotor (magnet array or multi-pole magnet) 2a are extracted and schematically shown.

[0020] The magnetic load reduction power generation device 10 according to the present invention includes a disk-shaped first permanent magnet rotor 2a in which N poles and S poles are alternately multi-pole magnetized (8 poles in this embodiment) inside an aluminum cylindrical casing 1, a rotating shaft 3 passing through the center in the radial direction thereof, eight long and short yokes 6a and 6b extending from an electromagnetic induction primary coil 4a arranged coaxially with the first permanent magnet rotor 2a, a second permanent magnet rotor 2b paired with the first permanent magnet rotor 2a, and eight long and short yokes 6a and 6b extending from an electromagnetic induction primary coil 4b arranged coaxially with the second permanent magnet rotor 2b as a basic configuration. The rotating shaft 3 is rotatably fixed to the cylindrical casing 1 via a bearing 9.

[0021] However, in this embodiment, the electromagnetic induction primary coils 4a and 4b are of the inner rotor type surrounding the permanent magnet rotors 2a and 2b. Of course, it may also be of the outer rotor type in which the permanent magnets surround the electromagnetic induction coils.

[0022] When the rotation shaft 3 is rotated or powered by mechanical power means 12 such as a propeller or a motor to be described later, the N and S poles of the magnetic poles on the permanent magnet rotors 2a and 2b sides approach and separate from the yokes 5a and 5b, respectively. In this device, at that time, a pair of permanent magnet rotors 2a and 2b, which are stacked so that the N and S poles are alternately phased in the axial direction of the rotation shaft 3 to bear the load generated on the rotation shaft 3, are used, and the magnetic force in the approaching stroke and the magnetic force in the separating stroke are arranged so that they can be in the same stroke on the same line of the rotation shaft to form a load-reducing magnetic field.

[0023] As shown in Fig. 1(b), by arranging the magnetic poles so that their phases are alternately arranged, the magnetic vector α on the permanent magnet rotor 2a side and the magnetic vector α' on the permanent magnet rotor 2b side, the magnetic vector β on the permanent magnet rotor 2a side and the magnetic vector β' on the permanent magnet rotor 2b side, that is, the magnetic fluxes of the two opposing magnetic fields cancel each other out by their magnetic flux actions, and a load-reducing magnetic field is formed. That is, the permanent magnet rows of each rotor 2a and 2b are provided so as to be opposite to each other on the left and right sides to form the flow of magnetic flux. Each rotor 2a and 2b is arranged in such a way that the N and S poles of the magnets are alternately arranged. In this embodiment, the number of poles is 8 poles, but it is not limited to this.

[0024] Furthermore, a closed magnetic circuit 16 composed of reaction coils 8a and 8b wound in directions opposite to each other is provided in a pair of magnetic induction secondary iron cores 7a and 7b electrically connected to the respective yokes 5a and 5b of the magnetic induction primary coils 4a and 4b. That is, a closed magnetic circuit 16 is provided between the first and second magnetic induction primary iron cores. When the rotation shaft 3 is rotated, the permanent magnet rotors 2a and 2b rotate, an electromagnetic induction current is generated in the reaction coils 8a and 8b, and the generated current can be taken out and used externally.

[0025] As shown in Figure 2, in the magnetic induction primary iron cores 5a and 5b, the reverse current magnetic field generated by the reaction coil 8a of the magnetic induction secondary iron core 7a due to the rotational motion of the S and N poles of the permanent magnet rotors 2a and 2b is in the direction of arrow M1, while the reverse current magnetic field generated by the observation coil 8b of the magnetic induction secondary iron core 7b is in the direction of arrow M2. In other words, the reverse magnetic fields due to the flow of current are mutually reduced. Therefore, the magnetic fields of the permanent magnet rotors 2a and 2b are independent of the direction of the current flow, the load due to the induced magnetization phenomenon is reduced, and the permanent magnet rotors 2a and 2b are given the kinetic energy necessary to rotate in opposition to their own mechanical load.

[0026] For example, when permanent magnet rotors 2a and 2b are rotated once, the south and north poles of the permanent magnets continuously supply a magnetic field to the induction primary core 5a or 5b, and a magnetic field is formed along the induction primary core 5a or 5b, induction secondary core 7a or 7b, and the other side of the trajectory of permanent magnet rotors 2a and 2b, starting from one side of the trajectory of permanent magnet rotors 2a and 2b. Then, an electric current is generated in the coils affected by the magnetic field.

[0027] When this current is used as generated power or stored, a reverse magnetic field is formed by the current flowing through the coil. However, at both ends of the magnetic induction secondary iron cores 5a and 5b, the reverse magnetic fields of the same magnetic flux (south pole, north pole, north pole, south pole) cancel each other out, resulting in a reduced load state where there is no resistance other than the weight and mechanical resistance of the rotor itself.

[0028] In other words, each time the S and N poles of the permanent magnets switch due to the alternation of the magnets, opposite magnetic fields are generated in the directions of the M1 and M2 arrows, canceling each other out and reducing the magnetic field. Since this reverse magnetic field caused by the reverse current is no longer affected by the permanent magnets, loads other than the mechanical primary load are also reduced. [Examples]

[0029] Figure 3(a) schematically shows another embodiment of the power generation device. Multiple permanent magnet rotors 2a and 2b are connected coaxially, with a propeller 12 attached to one end of the permanent magnet rotor 2b, and the other end and the shafts of the permanent magnet rotor 2a connected by an insulator 11 with the midpoint of the entire length interposed, and fixed coaxially by spline joining. The current generated from the permanent magnet rotor 2a side, which rotates due to the mechanical power applied to the propeller 12, is stored in a single-unit rechargeable battery 13, and the current from the permanent magnet rotor 2b side is stored in a single-unit rechargeable battery 14. Furthermore, the combined current of these is stored in a combined battery charger 15.

[0030] The aforementioned spline joint involves inserting a mechanical part with a boss (a part that encloses the shaft) that has a keyway cut into the inner surface of a cylindrical shaft, which has key-shaped protrusions at equal intervals on its outer circumference, to connect and transmit torque. Even if there is some axial movement during rotation, the connection force is strong because the key and shaft are integrated, and eccentricity between the shaft and the boss does not occur.

[0031] As shown in Figure 3(a), in this embodiment as well, the positive pole on the permanent magnet rotor 2a side and the negative pole on the permanent magnet rotor 2b side, and the negative pole on the permanent magnet rotor 2a side and the positive pole on the permanent magnet rotor 2b side, that is, the opposing electromagnetic fields cancel each other out, forming a load-reducing magnetic field. For example, this can be easily understood by considering it as having a similar effect to the cancellation of mechanical power on an uphill and downhill slope where friction is minimal.

[0032] As explained above, the magnetic load reduction power generation device of the present invention can reduce secondary loads other than the mechanical load of the device itself, namely the load generated by the reverse current flowing through the sensitive coil wound around the magnetic induction core. Therefore, even if all the current generated by electromagnetic induction is used, the magnetic secondary load due to the reverse current will only be slight, in addition to the mechanical primary load. In the configurations of the above embodiments, the magnet on the rotor side was a permanent magnet, but the invention is not limited to this, and the magnet on the rotor side may also be an electromagnet, and is not limited to this without departing from the gist of the present invention. [Industrial applicability]

[0033] The rotor of the magnetic load reduction power generation device of this invention can be constructed by combining the north and south poles in a helical pattern, or by combining the north and south poles in series and parallel. Furthermore, a piston-type power engine can be constructed that reciprocates the magnetic poles in the vertical direction using a mechanism consisting of pulleys, cams, springs, etc., which are rotated by an output shaft that rotates together with a flywheel, and this can be widely used as a load reduction power source. [Explanation of Symbols]

[0034] 1. Cylindrical casing 2a First permanent magnet rotor (magnet array or multi-pole magnet) 2b Second permanent magnet rotor (magnet array or multi-pole magnet) 3. Rotation axis of the permanent magnet rotor 4a Magnetic induction primary coil 4b Magnetic induction primary coil 5a Yoke (primary iron core) 5b Yoke (Primary Iron Core) 6a Extension piece of yoke 6b Yoke extension piece 7a Reaction coil 7b Reaction coil 8a Magnetic induction secondary iron core 8b Magnetic induction secondary iron core 9 bearings 10 Magnetic load reduction power generation device 11 Insulating joint 12. Mechanical power source (propeller or motor) 13. Standalone battery charger 14. Standalone battery charger 15. Combined Battery Charger 16 Closed magnetic circuit M1 Flow of magnetically induced current M2 Magnetic Induction Current Flow

Claims

1. A magnetic load reduction power generation device characterized by forming a load-reducing magnetic field by arranging the magnetic fields of two strokes—a proximity stroke generated by magnetic attraction between the stator-side iron core and the rotor-side magnetic poles, and a subsequent separation stroke during power generation caused by magnetic attraction—in an even number of stages in phase along the axial direction of the rotation shaft, with N poles and S poles alternating, and the opposing magnetic flux effects canceling each other out.

2. The magnetic load reduction power generation device according to claim 1, characterized in that the magnetic poles on the rotor side are multi-pole magnetized cylindrical permanent magnets or annular arrangement type permanent magnets.

3. A magnetic load reduction power generation device characterized by comprising: a rotating shaft; a first annular magnet array in which north poles and south poles are sequentially arranged on the outer circumference of a first rotating orbit with the rotating shaft as the center of rotation; a second annular magnet array in which the rotating shaft is the center of rotation, is connected to the first rotating orbit via an insulator, and magnets of opposite polarity to those at positions opposite to the first annular magnet array are sequentially arranged; a first magnetic induction primary iron core fixed to the first annular magnet array at a predetermined distance; a plurality of second magnetic induction primary iron cores fixed to the second annular magnet array at a predetermined distance; and a closed magnetic circuit provided between the first and second magnetic induction primary iron cores facing each other along the axis of rotation.

4. The magnetic load reduction power generation device according to claim 3, wherein the closed magnetic circuit comprises first and second coupled magnetic induction cores, a first reaction coil wound around the first coupled magnetic induction core, and a reaction coil wound around the second coupled magnetic induction core in the opposite direction to the first reaction coil.

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