Generator using on or off function for external magnetic field

Abstract

The present invention relates to a generator using an ON or OFF function for an external magnetic field and, more particularly, to a generator using an ON or OFF function for an internal magnetic field and an external magnetic field, wherein two types of field magnets having high coercive force, that is, a fixed field magnet and a rotary field magnet, are arranged on the left side and the right side thereof with a predetermined spacing therebetween, and a rotary field magnet that interacts with a fixed field magnet through a field iron core A on the upper side and a field iron core B on the lower side, which serve as magnetic paths between the two types of field magnets that generate a main field magnetic flux, is rotated so that the internal magnetic field and the external magnetic field periodically change. To this end, the present invention comprises a step in which an external magnetic field is very effectively induced in an armature iron core that is in contact with the upper surface of the field iron core A and the lower surface of the field iron core B and thus serves as a second magnetic circuit, so that power is generated in an armature coil.

Description

Generator using ON or OFF function for external magnetic field

[0001] The present invention relates to a generator using an external magnetic field to reduce the rotational load of a generator that increases in proportion to the increase in the load of a power system, and more specifically, to a generator using an ON or OFF function for an external magnetic field that induces a change in magnetic force in an armature core when the main field flux is periodically converted from an internal magnetic field to an external magnetic field by rotating one of two field magnets having a large coercive force, thereby generating an induced electromotive force through an armature coil wound thereon, and at this time, the armature reaction due to the current flowing in the armature coil is weighted as a rotational load of the generator, and can be weakened by the magnetic force of a fixed continuous magnet.

[0002] In a generator, which plays a key role in generating electricity, a generator obtains electrical energy by rotating a field magnet or an armature coil through electromagnetic induction. When the magnetic flux passing through the coil changes over time due to the relative motion of the magnet and the coil, an electromagnetically induced current is generated in a direction that follows Fleming's right-hand rule. The size of the induced power generated in the generator is proportional to the strength of the magnetic field, the length of the conductor, and the relative speed of the magnetic field and the conductor.

[0003] In order to supply power with a stable frequency, a conventional generator must maintain rotation at a constant speed. However, as the load on the power system increases, the rotational load on the generator increases proportionally, making it difficult to rotate. This is because when a conductor (coil) that receives a physical torque begins to flow due to movement in a magnetic field, a torque is generated in the conductor (coil) by this current. At this time, the direction of the torque follows Fleming's left-hand rule and acts in the direction opposite to the rotation of the generator, so there is a problem that the rotational speed of the generator gradually slows down, causing the commercial frequency and output voltage to decrease.

[0004] As a way to solve this, when the load on the generator power system increases, the rotational power of the external drive is increased accordingly according to the amount of torque increasing in the direction opposite to the rotation of the generator, but this has limitations in increasing the power generation efficiency.

[0005] The present invention was created to improve the limitations of the existing power generation technology described above, and the purpose of the present invention is to provide a generator that uses an ON or OFF function for an external magnetic field, in which a fixed field magnet having a large coercive force is arranged on one side between two field cores used as a magnetic flux path of a first magnetic circuit, and a circular rotating field magnet having a large coercive force is arranged so as to be rotatable on the other side, so that a first magnetic circuit is formed in which a main field flux is generated, and an external magnetic field that is periodically turned ON or OFF in the first magnetic circuit is induced in an armature core used as an external magnetic flux path by contacting the upper and lower surfaces of the field cores, thereby forming a second magnetic circuit, and an electromagnetically induced electromotive force corresponding to a change in the external magnetic field is generated in an armature coil inserted into the armature core.

[0006] At this time, when a current flows in the armature coil due to an external magnetic field induced in the armature core, an armature reaction occurs in a direction to prevent a change in the main field flux due to this current, and when the rotating load increases, the external magnetic field generated by the rotation of the rotating field magnet is in the ON state and the upper and lower magnetic poles of the fixed field magnet and the rotating field magnet are the same magnetic pole, so the armature reaction generated in the armature coil is weakened by the magnetic force of the fixed field magnet, and the torque does not increase significantly in the direction opposite to the rotation of the external driver due to the increase in the load of the power system, thereby providing a generator that can increase the output efficiency compared to the input.

[0007] In a generator that uses an ON or OFF function for an external magnetic field to reduce the rotational load due to an increase in the load of the power system and increase the output efficiency compared to the input,

[0008] The generator comprises: a lower field core B symmetrically provided with an upper field core A constituting the first magnetic circuit; fixed field magnets provided on the left and right sides between the upper and lower field cores A and B, and a rotating field magnet provided on the other left and right sides while maintaining a predetermined gap; a compensation coil surrounding the fixed field magnet; an armature core provided as a second magnetic circuit by contacting the upper surface of the field core A and the lower surface of the field core B; an armature coil wound on an insulating bobbin inserted into the armature core to output a change in an external magnetic field as an induced electromotive force; and a method of synchronizing rotation between two rotating field magnets that generate a change in an external magnetic field induced in the armature coil, depending on the arrangement of the generator, a timing belt & pulley rotation method linked to an external driver, a direct rotation method, and a gear rotation method (not shown in the drawing) are used.

[0009] Preferably, when current flows alternately through the left and right armature coils connected in series with the compensation coils surrounding the outer periphery of the fixed field magnets on the left and right sides, the magnetic field generated in the compensation coils is connected so that the upper and lower magnetic poles are the same as the upper and lower magnetic poles of the fixed field magnets.

[0010] Preferably, the generator using the external magnetic field is provided in two sets, and the magnetic poles (N / S) of the fixed field magnets arranged on the left and right sides between the upper and lower symmetrical field cores A and B constituting the first magnetic circuit are conveniently arranged with the upper side as the N pole and the lower side as the S pole, and the upper and lower magnetic poles of the two rotating field magnets arranged on the other left and right sides are arranged with a phase difference of 180° as (S / N):(N / S).

[0011] Preferably, a non-magnetic material of a certain thickness is provided so that a non-magnetic gap is maintained between two sets of generators using an external magnetic field.

[0012] The generator utilizing the ON or OFF function for the external magnetic field of the present invention has the following effects.

[0013] 1. When an induced current flows in the armature coil due to an external magnetic field induced in the armature core, and an armature reaction occurs in a direction to oppose the change in the main field flux due to this current, and the rotating load increases proportionally, the external magnetic field generated by the rotation of the rotating field magnet is in the ON state, and the upper and lower magnetic poles of the fixed field magnet and the rotating field magnet are the same magnetic pole, so the magnetic pole of the magnetic force generated in the compensation coil surrounding the outer surface of the fixed field magnet is also made the same magnetic pole as the upper and lower magnetic poles of the fixed field magnet, so that the magnetic force generated in the compensation coil is added to the magnetic force of the fixed field magnet, and the armature reaction generated in the armature coil is weakened, so that the torque does not increase significantly in the direction opposite to the rotation of the external driver due to the increase in the load of the power system, and thus the rotating load is greatly reduced.

[0014] 2. The left and right generators, which are synchronized in rotation by a single external drive, have the effect of greatly reducing the rotational load by offsetting the rotational load caused by the attractive force of the opposite magnetic poles of the left fixed and rotating field magnets with the rotational force caused by the repulsive force of the same magnetic poles of the right fixed and rotating field magnets.

[0015] 3. By inputting the left and right generator outputs using the ON or OFF function for the external magnetic field according to the present invention, which is output only as a half wave, into an inverter (not shown in the drawing) as a smoothed DC voltage, there is an effect of obtaining a stable commercial frequency (50 Hz to 60 Hz) and single-phase and three-phase AC voltage even if there is some rotational fluctuation of the generator.

[0016] Figure 1 is a cross-sectional view for describing the ON or OFF state of the external magnetic field of the present invention.

[0017] Figure 2 is a cross-sectional view for describing the reversed ON or OFF state for an external magnetic field of the present invention.

[0018] FIG. 3 is a perspective view showing the configuration of a generator using an ON or OFF function for an external magnetic field according to a preferred embodiment of the present invention.

[0019] FIG. 4 is a drawing showing the interlocking state of rotating field magnets having a phase angle of 180° arranged on the left and right according to a preferred embodiment of the present invention.

[0020] Figure 5 is a plan view of a generator utilizing an ON or OFF function for an external magnetic field according to a preferred embodiment of the present invention.

[0021] FIG. 6 is a diagram showing the output waveform of a generator using an ON or OFF function for an external magnetic field according to a preferred embodiment of the present invention.

[0022] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings, with respect to a generator utilizing an ON or OFF function for an external magnetic field.

[0023] The core technical components of a generator utilizing an ON or OFF function for an external magnetic field according to a preferred embodiment of the present invention largely include field core A (13, 23) and field core B (14, 24), fixed field magnets (11, 21) and rotating field magnets (12, 22), armature cores (15, 25) and armature coils (17, 27), and an external driver (70).

[0024] The characteristics and functions of the main components of the generator using the ON or OFF function for an external magnetic field according to the present invention are summarized as follows.

[0025] The field cores A, B (13, 23 & 14, 24) and the armature cores (15, 25) are laminated cores made by stacking thin steel plates with low iron loss (hysteresis loss + eddy current loss), and are used as magnetic flux paths required for magnetic induction with high magnetic permeability.

[0026] The fixed field magnets (11, 21) and rotating field magnets (12, 22) used as field magnets are magnets with high coercive force and are placed between field core A (13, 23) and field core B (14, 24) to generate changes in field magnetic flux. Permanent magnets can be used in small generators, but they can be replaced with electromagnets in medium and large generators.

[0027] The armature coil (17, 27) is wound around a bobbin (16, 26) which is an insulator and inserted into the armature core (15, 25), and generates electromotive force due to electromagnetic induction.

[0028] Hereinafter, as shown on the left side of Fig. 1, two types of field magnets that connect the upper field core A (13) and the lower field core B (14) forming the field circuit with magnetic flux are arranged on the left and right sides, and for convenience, the N pole of the fixed field magnet (11) is arranged on one side so that it faces upward, and the S pole of the rotating field magnet (12) is arranged on the other side so that it faces upward. In this case, almost all of the magnetic flux of the left and right field magnets (11, 12) is generated through the upper field core A (13) and the lower field core B (14), which serve as magnetic paths due to the strong attractive force between the opposing magnetic poles, thereby forming a closed first magnetic circuit, thereby forming a strong internal magnetic field (10), and almost no external magnetic field (20) is emitted to the outside. Therefore, the external magnetic field (20) induced in the armature core (15) forming the second magnetic circuit by contacting the upper surface of the upper field core A (13) and the lower surface of the lower field core B (14) is turned OFF, and no electromagnetically induced electromotive force is generated at all in the armature coil (17) inserted into the armature core (15).

[0029] However, as shown on the right side of Fig. 1, two types of field magnets that connect the upper field core A (23) and the lower field core B (24) forming the field circuit with magnetic flux are arranged on the left and right sides, and for convenience, the N pole of the fixed field magnet (21) is arranged on one side so that it faces upward, and the N pole of the rotating field magnet (22) is also arranged on the other side so that it faces upward, so that the magnetic resistance is maximized due to the strong repulsion between the same magnetic poles, and the internal magnetic field (10) is not formed, and since the magnetic poles of the two field magnets (21, 22) on the left and right sides are the N pole on the upper side and the S pole on the lower side, the upper field core A (23) becomes the N pole, and the lower field core B (24) becomes the S pole, so that the magnetic fields of the fixed field magnet (21) and the rotating field magnet (22) The external magnetic field (20) that cannot pass through the inside of the field core A (23) and the field core B (24) and is emitted to the outside is turned ON. At this time, the N pole of the upper field core A (23) comes into contact with the upper surface of the armature core (25) having a small magnetic resistance, and the S pole of the lower field core B (24) comes into contact with the lower surface of the armature core (25) having a small magnetic resistance, so that a second magnetic circuit is formed, and therefore, almost all of the external magnetic field (20) is induced in the armature core (25), and an electromagnetically induced electromotive force is generated through the armature coil (27) inserted therein.

[0030] In contrast, what is shown in Fig. 2 shows a state where the phase of the rotating field magnet (12, 22) is rotated by 180°, and the operating principle is the same as that shown in Fig. 1, but as the positions of the internal magnetic field (10) and the external magnetic field (20) on the left and right sides are changed, the external magnetic field (20) passing through the armature core (15) is turned ON, so that an electromagnetically induced electromotive force is generated in the armature coil (17) inserted therein.

[0031] At this time, as shown in FIGS. 1 and 2, the external magnetic field (20) is alternately turned ON or OFF in the left and right generators each time the magnetic pole (N / S) changes by a phase difference of 180° due to the periodic rotation of the rotating field magnet (12, 22) that drives the change in the main field flux, so that the output voltage waveform generated in the armature coils (17, 27) by the external magnetic field (20) passing through the armature core (15, 25) outputs a half wave, as shown in FIG. 6.

[0032] However, when an induced current flows in the armature coil (17, 27) due to an external magnetic field (20) induced in the armature core (15, 25), an armature reaction occurs in a direction to prevent a change in the main field flux in proportion to the induced current, and acts as a force to prevent the rotation of the rotating field magnet (12, 22) through the armature core (15, 25) and field cores (13, 14 and 23, 24) that serve as a magnetic flux path, thereby increasing the rotating load. However, as shown in FIGS. 1 and 2, when the external magnetic field (20) is ON, the upper and lower magnetic poles of the fixed field magnets (11, 21) and the rotating field magnets (12, 22) arranged on the left and right are the same magnetic poles, and the armature is connected in series with the compensation coil (19) surrounding the outer periphery of the fixed field magnet (11). When an induced current flows in the armature coil (27) connected in series with the compensation coil (29) surrounding the outer periphery of the coil (17) and the fixed field magnet (21), if the upper and lower magnetic poles of the magnetic force generated in the compensation coils (19, 29) are made to be the same as the upper and lower magnetic poles of the fixed field magnet (11, 21), the repulsive force that more effectively attenuates the electromagnetic reaction generated in the armature coils (17, 27) acts, so that the rotational load on the rotating field magnet (12, 22) does not increase significantly.

[0033] Referring to FIGS. 1 to 3, a preferred embodiment of a generator utilizing an ON or OFF function for an external magnetic field according to a preferred embodiment of the present invention will be described.

[0034] The generator utilizing the ON or OFF function for the external magnetic field illustrated in FIG. 3 is configured by placing one set of generators with the internal magnetic field (10) in the ON state on the left side and one set of generators with the external magnetic field (20) in the ON state on the right side, as illustrated in FIGS. 1 and 2, and this configuration is operated by an external driver (70) while maintaining a phase angle of 180° between the magnetic poles (N / S) of the rotating field magnets (12, 22) so that the internal magnetic field (10) and the external magnetic field (20) operate out of phase.

[0035] It includes a first magnetic circuit composed of an upper field core A (13, 14) and a lower field core B (14, 24) that serve as a magnetic path with a fixed field magnet (11, 21) and a rotating field magnet (12, 22) interposed therebetween that generate a change in the main field flux, an armature core (15, 25) that contacts the upper surface of the upper field core A (13, 23) and the lower surface of the lower field core B (14, 24) to form a second magnetic circuit, an armature coil (17, 27) inserted therein, a timing belt (74) and pulleys (71, 72, 73) that link the magnetic poles (N / S) of the rotating field magnets (12, 22) while maintaining a phase of 180°, and a single external driver (70).

[0036] As shown in Fig. 1, two types of field magnets (11, 12) that connect the upper field core A (13) and the lower field core B (14) that form the first magnetic circuit on the left side with magnetic flux are arranged on the left and right sides, and for convenience, the N pole of the fixed field magnet (11) is arranged on one side so that it faces upward, and the S pole of the rotating field magnet (12) is arranged on the other side so that it faces upward, in which case almost all of the magnetic flux of the left and right field magnets (11, 12) is formed by the strong attractive force between the opposing magnetic poles through the upper field core A (13) and the lower field core B (14) that have small magnetic resistance, and a strong internal magnetic field (10) is formed, and a strong force is applied to maintain this, making it difficult for the rotating field magnet (12) to rotate.

[0037] And as shown in Fig. 1, two types of field magnets (21, 22) are arranged on the left and right sides with a non-magnetic material (60a) of a certain thickness in between and connecting the upper field core A (23) and the lower field core B (24) forming the first magnetic circuit with magnetic flux. However, for convenience, in the case where the N pole of the fixed field magnet (21) is arranged on one side so that it faces upward, and the N pole of the rotating field magnet (22) is also arranged on the other side so that it faces upward, a strong repulsive force acts between the same magnetic poles, which maximizes the magnetic resistance, so that an internal magnetic field (10) is not formed, and unlike the fixed field magnet (21), the relatively free rotating field magnet (22) exerts a magnetic rotational force due to the strong repulsive force, thereby generating a strong torque to restore the internal magnetic field (10).

[0038] Therefore, in order to overcome the strong rotation rejection reaction that occurs when only one set of generators using the ON or OFF function for an external magnetic field is operated on the left side as described above, one set of generators using the ON or OFF function for an external magnetic field is added on the right side, but the magnetic poles (N / S) of the left and right rotary field magnets (12, 22) are arranged with a phase difference of 180°, so that the force trying to rotate by the strong repulsion between the same magnetic poles on the right side can be offset by the force trying to rotate by the same magnitude as the force trying to reject rotation by the strong attractive force between the opposing magnetic poles on the left side.

[0039] As described above, a generator using an ON or OFF function for an external magnetic field is arranged on the left and right sides, and when the magnetic poles (N / S) of the fixed field magnets (11, 21) and the rotating field magnets (12, 22) on the left and right sides are opposite, the strong rotational load due to the attractive force between the magnetic poles is offset by the strong rotational force due to the repulsive force between the same magnetic poles, thereby greatly reducing the rotational load. In order to maintain a 180° phase difference between the rotating field magnets (12, 22), a pulley (71) is provided integrally on the front magnet holder shaft (18a) and the rear magnet holder shaft (18b) that support the rotating field magnet (12) on the left side and also function as a rotational axis, and a pulley (71) is provided integrally on the front magnet holder shaft (28a) and the rear magnet holder shaft (28b) that support the rotating field magnet (22) on the right side that is linked with the pulley (71) and also function as a rotational axis. Pulley (72), the above pulleys (71, 72) are synchronized in rotation through a timing belt (74) that is linked to a pulley (73) integrally provided on the rotation axis of an external drive (70).

[0040] In this way, when two sets of generators utilizing the ON or OFF function for the external magnetic field arranged on the left and right are combined as a group and operated as a single external driver (70), the external magnetic field (20) is periodically turned ON or OFF by the synchronized rotation of the rotating field magnets (12, 22), and an induced voltage is generated in the armature coils (17, 27) only when the external magnetic field is ON, so that, as illustrated in FIG. 6, the two sets of generators each output a half wave with a 180° rotation cycle.

[0041] Accordingly, referring to FIG. 6, the two sets of generators arranged on the left and right according to the embodiment of the present invention output half-waves (Table 1, Table 2) with a phase difference of 180° per rotation (360°), so when these are combined, a rectified full-wave (Table 3) can be obtained.

[0042] And as described above, if the output of the generator using the ON or OFF function for the external magnetic field output only as a half wave according to the embodiment of the present invention is input as smoothed direct current (DC) to an inverter (not shown in the drawing), a stable commercial frequency (50 Hz & 60 Hz) and single-phase and three-phase AC voltage can be obtained even if there is some rotational fluctuation of the generator.

[0043] Although the embodiments of the present invention have been described above, those skilled in the art will be able to modify and change the present invention in various ways by adding, changing, deleting or adding components, etc., within a scope that does not depart from the essential technical idea of ​​the present invention described in the claims, and this is also included within the scope of the rights of the present invention.

Claims

1. In a generator that uses an ON or OFF function for an external magnetic field to reduce the rotational load due to an increase in the load of the power system and increase the output efficiency compared to the input, A lower field core B provided symmetrically to the upper field core A constituting the first magnetic circuit of the above generator; A fixed field magnet provided on one left and right side between the upper and lower field cores A and B, and a rotating field magnet provided on another left and right side while maintaining a predetermined gap; A compensation coil surrounding the outer surface of the above fixed field magnet; An armature core provided as a second magnetic circuit by contacting the upper surface of the above-mentioned field core A and the lower surface of the field core B; An armature coil wound on an insulating bobbin inserted into the above armature core to output a change in an external magnetic field as an induced electromotive force; A generator using an ON or OFF function for an external magnetic field, characterized in that the method of synchronizing rotation between two rotating field magnets that generates a change in an external magnetic field induced in the above-mentioned armature coil includes a timing belt & pulley rotation method linked to an external drive, a direct rotation method, and a gear-type rotation method depending on the arrangement of the generator.

2. In paragraph 1, A generator using an ON or OFF function for an external magnetic field, characterized in that the above fixed field magnet and rotating field magnet can use permanent magnets or electromagnets depending on the power generation capacity.

3. In paragraph 1, A generator utilizing an ON or OFF function for an external magnetic field, characterized in that when current flows alternately through the left and right armature coils connected in series with the compensation coils surrounding the outer periphery of the fixed field magnets on the left and right sides, the upper and lower magnetic poles of the magnetic force generated in the compensation coils are connected so that they are the same as the upper and lower magnetic poles of the fixed field magnets.

4. In paragraph 1, A generator using the external magnetic field is provided in two sets, and the magnetic poles (N / S) of the fixed field magnets arranged on the left and right sides between the upper and lower symmetrical field cores A and B constituting the first magnetic circuit are conveniently arranged with the upper side as the N pole and the lower side as the S pole, and the upper and lower magnetic poles of the two rotating field magnets arranged on the other left and right sides are arranged with a phase difference of 180° as (S / N): (N / S), which is characterized by a generator using an ON or OFF function for an external magnetic field.

5. In paragraph 4, A generator using an ON or OFF function for an external magnetic field, characterized in that a non-magnetic material of a certain thickness is provided so that a non-magnetic gap is maintained between two sets of generators using the external magnetic field.

Images