JP4926263B2 - Flywheel and power generator - Google Patents

Description

The present invention relates to a flywheel and a power generator.

  The flywheel is configured to be able to store a large amount of kinetic energy by rotating a rotating body like a top having a predetermined inertial mass at a high speed. In such a power generator using a flywheel, the flywheel stores surplus (or regenerated) electrical energy as the kinetic energy of the rotating body, and the generator converts the flywheel kinetic energy into electric energy. Then, the storage battery is charged. The power energy stored in the storage battery can be reused as the power consumption of the load.

Japanese Patent Laid-Open No. 9-21421

  In order for the flywheel to efficiently store kinetic energy, in addition to reducing the rotational resistance of the flywheel, it is necessary to convert surplus energy into kinetic energy of the rotating body with high efficiency. In the conventional power generation apparatus, it was necessary to drive the flywheel using a drive device such as a motor provided separately from the flywheel, thereby converting all excess energy into kinetic energy of the rotating body. However, the conventional power generation apparatus has a problem that energy loss is large when the surplus energy is converted into the kinetic energy of the rotating body.

  In order to solve the above-described problems, a power generation device according to an embodiment of the present invention includes a rechargeable battery that supplies electric power, a rotary shaft that is rotatably provided, and at least fixed to the rotary shaft. A permanent magnet rotor including one permanent magnet, having a certain inertia weight, and rotatable with the rotating shaft; and at least one provided around the permanent magnet rotor and facing the permanent magnet rotor An electromagnet stator that includes an electromagnet and is fixed so as not to rotate, and a flywheel that imparts kinetic energy to the permanent magnet rotor by supplying electric power from the battery to the electromagnet, and the battery for charging the battery A generator that converts the kinetic energy of the permanent magnet rotor into electrical energy.

  With this configuration, the power generator according to the present embodiment directly applies kinetic energy to the permanent magnet rotor by supplying power from the battery to the electromagnet in order to assist the rotation of the permanent magnet rotor of the flywheel. Can do. Therefore, energy loss in conversion from electric energy to kinetic energy is small, and conversion from electric energy to kinetic energy can be performed with high efficiency.

  The power generator is a power generator that generates alternating current power, and the power generation apparatus further includes a battery charger that converts the alternating current power generated by the power generator into direct current power and supplies the direct current power to the battery. You may have.

  The power generation device may further include a housing that houses the permanent magnet rotor and the electromagnet stator, and the inside of the housing may be maintained in a vacuum state. As a result, the permanent magnet rotor can rotate with almost no air resistance.

  The generator receives a power supply from the battery and rotates the rotating shaft, converts the DC power from the battery into AC power, and supplies AC power to the load, the flywheel, and the motor. And a converter for supplying.

  The power generation apparatus may further include a transformer connected between the power generator and the battery charger and supplying power to the motor, the flywheel, or the load. By providing the transformer, the AC power generated from the generator can be directly used as it is for the motor and the load. In this case, since it is not necessary to convert the DC power from the battery into AC power, the efficiency is higher than when power is supplied from the battery.

  The battery, the flywheel or the motor may be configured to receive surplus power or regenerative power generated in the load.

  A flywheel according to an embodiment of the present invention includes a rotation shaft provided rotatably and at least one permanent magnet fixed to the rotation shaft, and has a certain inertia weight and the rotation A permanent magnet rotor rotatable with a shaft, and an electromagnet stator including at least one electromagnet provided around the permanent magnet rotor so as to face the permanent magnet rotor and fixed so as not to rotate. The kinetic energy is given to the permanent magnet rotor by supplying electric power energy to the permanent magnet rotor.

  By having such a configuration, the flywheel according to the present embodiment can directly give kinetic energy to the permanent magnet rotor by the electric power supplied to the electromagnet. Therefore, energy loss in conversion from electric energy to kinetic energy is small, and conversion from electric energy to kinetic energy can be performed with high efficiency.

  The permanent magnet rotor may include only N or S permanent magnets, and the electromagnet of the electromagnet stator may be configured to alternately generate N or S magnetic poles by AC power.

  The flywheel may further include a housing that houses the permanent magnet rotor and the electromagnet stator, and the inside of the housing may be maintained in a vacuum state. As a result, the permanent magnet rotor can rotate with almost no air resistance.

Object of the invention

  An object of the present invention is to provide a flywheel capable of efficiently obtaining the kinetic energy of a rotary body of a flywheel and a power generation apparatus including such a flywheel.

The block diagram which shows an example of a structure of the electric power generating apparatus according to 1st Embodiment which concerns on this invention. Sectional drawing which shows an example of a structure of the flywheel 70 according to 1st Embodiment. Sectional drawing seen from the horizontal direction of the flywheel 70. FIG. The block diagram which shows an example of a structure of the electric power generating apparatus according to 2nd Embodiment which concerns on this invention. The block diagram which shows an example of a structure of the electric power generating apparatus according to 3rd Embodiment which concerns on this invention. The graph which shows the experimental result of the operation possible time of the electric power generating apparatus by 3rd Embodiment, and the operation possible time of the electric power generation apparatus by a comparative example.

  Embodiments according to the present invention will be described below with reference to the drawings. This embodiment does not limit the present invention.

(First embodiment)
FIG. 1 is a block diagram showing an example of the configuration of the power generation device according to the first embodiment of the present invention. The power generation device according to the present embodiment includes a battery 10, a DC-AC converter 20, a motor 30, pulleys 40 to 43, belts 50 and 51, a rotating shaft 60, a flywheel 70, a recoil 80, A power generator 90 and a battery charger 95 are provided.

  The battery 10 supplies power to the load, the motor 30, and the flywheel 70 via the DC-AC converter 20. The battery 10 may be, for example, a DC 12-volt rechargeable battery, or a battery group configured by connecting a plurality of such batteries in series or in parallel. When the battery 10 is a battery group including a plurality of batteries, the battery 10 can generate a DC voltage of 24 volts or 48 volts. For example, the battery 10 according to the present embodiment is a 48-volt battery group in which four 12-volt batteries are connected in series.

  The DC-AC converter 20 converts the DC power of the battery 10 into AC power. For example, the DC-AC converter 20 converts direct current (DC) 24 volt power into alternating current (AC) 100 volt power and alternating current (AC) 200 volt power. The AC power converted by the DC-AC converter 20 is supplied to the load, the motor 30 and the flywheel 70. In this embodiment, the load and flywheel 70 are driven by AC power of AC 100 volts, and the motor 30 is driven by AC power of AC 200 volts.

  The load is not particularly limited as long as it is an electric device that consumes electric power. For example, the load may be a lighting fixture or an air conditioner used indoors or outdoors. Further, the load may be a vehicle lighting device or an air conditioner. In this embodiment, the load uses the same AC 100 volt power as the commercial power, but may use an AC 200 volt power.

  The motor 30 receives the supply of electric power from the battery 10 via the DC-AC converter 20 and rotates the rotor 31. The maximum power consumption of the motor 30 is about 1000 watts according to the standard. The rotor 31 is coupled to the pulley 40 via the belt 50 and rotates the pulley 40. The belt 50 connects the pulleys 40 and 41 so as to transmit the rotational motion of the pulley 40 to the pulley 41. The pulley 41 is fixed to the rotating shaft 60, and the rotating shaft 60 rotates together with the pulley 41. Accordingly, the motor 30 receives the power supply from the battery 10 and rotates the rotating shaft 60.

  The rotating shaft 60 is shared as the center of rotation of the pulley 41, the pulley 42, the flywheel 70, and the recoil 80. The bearing of the rotating shaft 60 is not particularly limited, such as a rolling bearing, a sliding bearing, or a magnetic bearing, but a bearing having a low rotational resistance is preferable. The bearing of the rotating shaft 60 may be a floating bearing using superconducting technology, for example. Thereby, the rotational resistance of the rotating shaft 60 can be reduced as much as possible.

  As will be described later with reference to FIG. 2, the flywheel 70 includes a permanent magnet rotor 72 that rotates together with the rotating shaft 60, and stores kinetic energy by the rotational motion of the permanent magnet rotor 72. Further, the flywheel 70 receives power supply from the battery 10 and assists the rotation of the permanent magnet rotor. In this embodiment, the flywheel 70 consumes 1 ampere of power at 100 volts AC.

  The recoil 80 is provided on the rotating shaft 60 and is configured to be able to apply a rotating force to the rotating shaft 60 from the outside. When starting to rotate the flywheel 70 having a large inertia weight from a stationary state, a very large power is required. For this reason, when the operation of the flywheel 70 cannot be started only with the electric power from the battery 10, when excessive power is consumed to start the operation of the flywheel 70, or when the operation start of the flywheel 70 takes a long time, An operator can manually rotate the permanent magnet rotor via the recoil 80. However, if the battery 10 can supply sufficient power to rotate the flywheel 70, the recoil 80 is not necessary.

  The belt 51 connects the pulleys 42 and 43 so as to transmit the rotational motion of the pulley 42 to the pulley 43. The pulley 43 is fixed to the shaft 91 of the power generator 90, and the rotational motion of the pulley 43 is transmitted to the shaft 91.

  The power generator 90 generates power by the rotation of the shaft 91 and stores the generated power in the battery 10 via the battery charger 95. That is, the generator 90 converts the kinetic energy of the permanent magnet rotor into electrical energy and stores this electrical energy in the battery 10. In the present embodiment, the power generator 90 is a power generator that can generate AC power of AC 100 volts, for example, and can generate a maximum current of 31 A on the standard.

  The battery charger 95 charges the battery 10 with the electric power generated by the power generator 90. At this time, the battery charger 95 converts the electric power generated at 100 VAC into DC power and stores it in the battery 10. In this embodiment, the battery charger 95 consumes about 12 amps of power at 100 VAC, for example.

  The load may receive power from the battery 10 and supply surplus power or regenerative power to the flywheel 70, the motor 30, or the battery charger 95 as indicated by the broken line arrows in FIG. When the surplus power or the regenerated power is DC power, the load may return the surplus power or the regenerated power directly to the battery 10. When the load does not generate surplus power or regenerated power, the load only consumes power from the battery 10.

  FIG. 2 is a cross-sectional view showing an example of the configuration of the flywheel 70 according to the first embodiment. The flywheel 70 includes a permanent magnet rotor 72, an electromagnet stator 74, and a housing 75. The casing 75 houses a permanent magnet rotor 72 and an electromagnet stator 74. The inside of the housing 75 is maintained in a vacuum state.

  The permanent magnet rotor 72 includes a plurality of permanent magnets 71 that are evenly arranged so as to surround the periphery of the rotation shaft 60, and is fixed to the rotation shaft 60 so as to be rotatable together with the rotation shaft 60. The plurality of permanent magnets 71 are respectively arranged at equal distances from the rotation shaft 60, and are arranged around the rotation shaft 60 in a circular shape at equal intervals. The permanent magnet rotor 72 has a certain inertia weight so that kinetic energy can be sufficiently stored. In the present embodiment, all the permanent magnets 71 of the permanent magnet rotor 72 are unified to only one polarity of the N pole or the S pole. That is, the permanent magnet rotor 72 includes only the permanent magnet 71 having either the N pole or the S pole. In the example of FIG. 2, the permanent magnet rotor 72 includes only an N-pole permanent magnet 71.

  The electromagnet stator 74 includes a plurality of electromagnets 73 provided to face the permanent magnet rotor 72. The plurality of electromagnets 73 are arranged along the periphery of the permanent magnet rotor 72, and are arranged at a certain interval (for example, an interval of 2 millimeters) from the permanent magnet 71 so as not to contact the permanent magnet rotor 72. Therefore, the plurality of electromagnets 73 are also arranged at an equal distance from the rotation shaft 60 and are arranged around the rotation shaft 60 in a circular shape at equal intervals. However, the plurality of electromagnets 73 are fixed to the housing 75. Therefore, the electromagnet stator 74 does not rotate like the rotating shaft 60 and the permanent magnet rotor 72 but is stationary with the housing 75. The electromagnet stator 74 and the permanent magnet rotor 72 are provided so as to maintain a distance between the permanent magnet 71 and the electromagnet 73 when the permanent magnet rotor 72 rotates. Preferably, the same number of electromagnets 73 as the permanent magnets 71 are provided, and correspond to the permanent magnets 71 on a one-to-one basis.

  One terminal of the plurality of electromagnets 73 is maintained at a reference potential as a common terminal. On the other hand, AC power is supplied to the other terminal of the plurality of electromagnets 73 via the communicator 100. The AC power may be, for example, the same AC 100 volt power as commercial use. The communicator 100 is fixed to the rotating shaft 60 and rotates together with the rotating shaft 60. Thereby, the communicator 100 supplies alternating current power in order with respect to the terminals L1-L16. When AC power is supplied to the electromagnets 73, the magnetic poles of the electromagnets 73 alternately repeat N and S poles. As a result, the electromagnet 73 alternately applies an attractive force and a repulsive force to the permanent magnet 71 to rotate the permanent magnet rotor 72.

  The flywheel 70 having such a configuration can directly apply kinetic energy to the permanent magnet rotor 72 by supplying AC power from the battery 10 to the electromagnet 73 in order to assist the rotation of the permanent magnet rotor 72. Therefore, the flywheel 70 according to the present embodiment has a small energy loss in conversion from electric energy to kinetic energy, and can convert electric energy to kinetic energy with high efficiency.

  FIG. 3 is a cross-sectional view of the flywheel 70 in the lateral direction. Referring to FIG. 3, it can be seen that the permanent magnet 71 and the communicator 100 are fixed to the rotating shaft 60, and the electromagnet 73 is provided around the permanent magnet rotor 72. As described above, in the present embodiment, the inside of the housing 75 is in a vacuum state, and the permanent magnet rotor 72 and the electromagnet stator 74 are provided in a vacuum. The gap between the permanent magnet 71 and the electromagnet 73 is also in a vacuum state. Therefore, the permanent magnet rotor 72 can rotate in a vacuum with almost no air resistance.

  Next, the experimental results of actually operating the power generation apparatus according to the present embodiment shown in FIG. 1 will be described. The actual measurement value of the current consumption of the motor 30 is about 11.5 amperes (AC 200 volts), the actual measurement value of the current consumption of the flywheel 70 is about 1 ampere (AC 100 volts), and the actual measurement of the current consumption of the battery charger 95. The value was about 12 A (AC 100 volts). Furthermore, the actual measurement value of the consumption current of the load was about 5 A (AC 100 volts). That is, the power consumption Wout_total of the power generator shown in FIG. 1 was about 4100 watts (Wout_total = 11.5 × 200 + 1 × 100 + 12 × 100 + 5 × 100).

  On the other hand, the measured value of the generated current of the generator 90 was about 9.5 amperes (AC 100 volts). That is, the generated (generated) power Win_total of the power generator shown in FIG. 1 was about 950 watts (Win_total = 9.5 × 100). In this experiment, lighting is used as a load for convenience, but the load does not supply power to the power generation device in order to simply check the power generation efficiency. In other words, in this experiment, the load only consumes power but does not generate it.

  In the experiment, the power generation apparatus according to the present embodiment as described above consumed about 4100 watts as the power consumption Wout_total and generated about 950 watts as the generated power Win_total. Therefore, the power generation efficiency (Win_total / Wout_total) is about 23.2%.

  As a comparative example, an experimental result of a power generation device including a conventional flywheel will be described. The conventional flywheel used in this comparative example does not include the permanent magnet 71 and the electromagnet 73, but includes a normal rotor having almost the same inertial mass as the permanent magnet rotor 72. Other configurations of the power generation device according to this comparative example are the same as the corresponding configurations of the power generation device according to the present embodiment. Therefore, the components such as the battery 10, the DC-AC converter 20, the motor 30, the generator 90, the battery charger 95, and the like are the same as those used in the experiment of this embodiment. The power consumptions of the motor 30, the battery charger 95, and the load are also the same as those in the experiment of the present embodiment. Furthermore, the resistance of the flywheel shaft is the same. In addition, since the flywheel rotor is rotated in a vacuum, the air resistance of the flywheel is the same as that of the experiment of the present embodiment.

  Under such conditions, the following experimental results were obtained. The actual consumption current of the motor 30 was about 11.5 amps (AC 200 volts), and the actual consumption current of the battery charger 95 was about 12 A (AC 100 volts). Furthermore, the actual current consumption of the load was about 5 A (AC 100 volts). That is, the power consumption Wout_total ′ of the power generation device according to this comparative example was about 4000 watts (Wout_total ′ = 11.5 × 200 + 12 × 100 + 5 × 100).

  On the other hand, the actual generated current of the generator 90 was about 6.2 amps (AC 100 volts). That is, the generated (generated) power Win_total ′ of the power generator according to this comparative example was about 620 watts (Win_total ′ = 6.2 × 100). In the experiment of this comparative example, the illumination as a load only consumes power and is not generated.

  In the experiment, the power generation apparatus according to this comparative example as described above consumed about 4000 watts as the power consumption Wout_total ′ and generated about 620 watts as the generated power Win_total ′. Therefore, the power generation efficiency (Win_total ′ / Wout_total ′) is about 15.5%.

  From the above experiment, it was found that the power generation device including the improved flywheel 70 according to the present embodiment can improve the power generation efficiency by about 7.7% as compared with the power generation device including the conventional flywheel.

  From the above experiment, the power generation apparatus including the flywheel according to the present embodiment directly and electrically converts the electric energy into the kinetic energy (rotational energy) of the permanent magnet rotor 72 by the permanent magnet rotor 72 and the electromagnet 73 provided around the permanent magnet rotor 72. It turned out that it can convert efficiently.

  In addition, although the flywheel 70 by this embodiment was driven with the electric power of 1 ampere (AC100V), you may drive with the electric power larger than it. Thereby, the electric power generating apparatus can convert much larger electric energy into kinetic energy with high efficiency.

  Further, by further increasing the driving power of the flywheel 70 according to the present embodiment, the flywheel 70 itself can rotate the rotating shaft 60 and drive the generator 90 instead of the motor 30. Also good. In this case, the motor 30, the pulleys 40 and 41, and the belt 50 are unnecessary. Therefore, the energy conversion efficiency can be further increased, and the cost of the power generation device can be reduced.

(Second Embodiment)
FIG. 4 is a block diagram showing an example of the configuration of the power generation device according to the second embodiment of the present invention. The second embodiment is different from the first embodiment in that a transformer 110 connected between the generator 90 and the battery charger 95 is provided. The other components of the second embodiment are the same as the corresponding components of the first embodiment.

  The transformer 110 can transform AC power of AC 100 volts to AC 200 volts and supply the AC power to the motor 30. In this case, the transformer 110 can supplement a part of the power consumption of the motor 30. Thereby, the electric power burden of the DC-AC converter 20 is reduced. Also, if the flywheel 70, battery charger 95 and / or load is different from the voltage from the generator 90, the transformer 110 adapts the power from the generator 90 to the flywheel 70, battery charger 95 and / or load. The transformed power may be transformed to supply the flywheel 70, the battery charger 95, and / or the load. In this case, the transformer 110 may supply all of the power consumption of the flywheel 70, the battery charger 95, and / or the load. As a result, the DC-AC converter 20 only needs to drive the motor 30, so the power burden on the DC-AC converter 20 is further reduced.

  When the transformer 110 supplies power, the AC power generated from the generator 90 can be directly used as it is. In this case, since there is no need to convert the DC power from the battery 10 into AC power, the efficiency is better than when power is supplied from the battery 10.

  Thus, the second embodiment can use the power generated by the power generator 90 more efficiently by including the transformer 110. Further, the second embodiment includes an improved flywheel 70 as in the first embodiment. Therefore, the second embodiment can obtain the same effects as those of the first embodiment.

(Third embodiment)
FIG. 5 is a block diagram showing an example of the configuration of the power generation device according to the third embodiment of the present invention. The third embodiment is different from the first embodiment in that a dynamo that generates DC power is provided as the generator 93. Since the third embodiment uses a dynamo as the power generator 93, the AC power generator 90 and the battery charger 95 in the first embodiment are not necessary.

  The generator 93 generates DC power by rotating the shaft 91 and stores the generated power in the battery 10. That is, the generator 93 converts the kinetic energy of the permanent magnet rotor into electrical energy and stores this electrical energy in the battery 10. In the third embodiment, the power generator 93 is, for example, a power generator that generates direct current power of DC 24 volts and can generate a current of 50 A at maximum according to the standard. In the third embodiment, the battery 10 is a 24 volt battery group in which two 12 volt batteries are connected in series.

  As in the third embodiment, the power generator according to the present invention can be realized by using not only the AC power generator 90 but also a DC power generator (dynamo) 93. Since 3rd Embodiment is provided with the improved flywheel 70, it can convert from electrical energy to kinetic energy more efficiently than before, similarly to 1st Embodiment.

  FIG. 6 is a graph showing the experimental results of the operable time of the power generator according to the third embodiment and the operable time of the power generator according to the comparative example. When power is generated using the power generator (dynamo) 93, the power that can be generated by the power generator 93 cannot be measured, and thus the operating time was measured in the experiment.

  The experiment of the third embodiment was performed using a power generator having the configuration shown in FIG. The experiment of the comparative example was performed using a power generation device including a conventional flywheel instead of the flywheel 70 according to the present embodiment. The flywheel used in the comparative example does not include the permanent magnet 71 and the electromagnet 73, but includes a normal rotor having substantially the same inertial mass as the permanent magnet rotor 72. The other configuration of the power generation device according to this comparative example is the same as the corresponding configuration of the power generation device used in the experiment of the third embodiment. Therefore, the components such as the battery 10, the DC-AC converter 20, the motor 30, and the generator 93 are the same as those used in the experiment of the third embodiment. Furthermore, the resistance of the flywheel shaft is the same. In addition, since the flywheel rotor is rotated in a vacuum, the air resistance of the flywheel is the same as that of the experiment of the present embodiment.

  The load is the same illumination as the load used in the first embodiment.

  As shown in FIG. 6, the power generator according to the comparative example was able to turn on the illumination as a load for about 5 hours. On the other hand, the power generation apparatus according to the third embodiment was able to turn on the illumination as a load for about 7 hours. That is, by replacing the conventional flywheel with the improved flywheel 70 according to the present embodiment, the power generation apparatus can turn on the illumination for a longer time. This means that the power generation device according to the third embodiment has better power generation efficiency than the power generation device according to the comparative example. In addition, the experimental result shown in FIG. 6 is a result of having performed the experiment several times, and a significant difference was recognized.

  From the above, even if a dynamo is used as a power generator as in the third embodiment, the effect of the present invention is not lost. That is, the third embodiment can obtain the same effect as the first embodiment.

  In addition, the flywheel 70 according to the third embodiment is driven with electric power of 1 ampere (AC 100 V), but may be driven with electric power larger than that. Thereby, the electric power generating apparatus can convert much larger electric energy into kinetic energy with high efficiency.

  Further, by further increasing the drive power of the flywheel 70 according to the third embodiment, the flywheel 70 itself can rotate the rotating shaft 60 and drive the generator 93 instead of the motor 30. May be. In this case, the motor 30, the pulleys 40 and 41, and the belt 50 are unnecessary. Therefore, the energy conversion efficiency can be further increased, and the cost of the power generation device can be reduced.

  The power generator according to the above embodiment can be driven only by the battery 10. Therefore, the power generator according to the present embodiment has high utility value outdoors without a commercial power source. In addition, since fossil fuels such as oil and gasoline are not used, it is environmentally friendly. Since the flywheel 70 has not only the function of the flywheel but also the function of a motor as described above, the flywheel 70 directly converts electrical energy into the kinetic energy of the permanent magnet rotor 72. For this reason, the power generator according to the above-described embodiment is efficient. Moreover, if the function of the motor of the flywheel 70 is strengthened so that the flywheel 70 can keep rotating, the motor 30 becomes unnecessary. That is, by combining the function of the motor 30 with the flywheel 70, the motor 30 can be omitted, and a compact and highly efficient power generator can be realized.

  Since the flywheel 70 by the above embodiment is driven only by the battery 10, it can also be applied to a passenger car.

  The power generator and flywheel according to the above embodiment can be combined with a superconducting flywheel. However, the superconducting flywheel actually requires liquid nitrogen or liquid helium for cooling, resulting in high cost. At room temperature, superconductivity is at the stage of material development. Therefore, it can be said that the flywheel 70 according to the above embodiment is realistic and suitable for mass production at a low cost.

DESCRIPTION OF SYMBOLS 10 ... Battery 20 ... DC-AC converter 30 ... Motor 40-43 ... Pulley 50, 51 ... Belt 60 ... Rotating shaft 70 ... Flywheel 80 ... Recoil 90 ... Generator 95 ... Battery charger 110 ... Transformer

Claims (2)

A rechargeable battery that supplies power;
A permanent magnet rotor including a rotation shaft provided rotatably and a plurality of permanent magnets fixed to the rotation shaft, having a certain inertia weight, and rotatable with the rotation shaft, and the permanent magnet rotor An electromagnet stator that is provided to face the permanent magnet rotor and is provided so as to correspond to the permanent magnet in a one-to-one correspondence, and is fixed so as not to rotate, together with the rotating shaft A communicator that rotates and in turn provides power to the electromagnet, and provides a kinetic energy to the permanent magnet rotor by supplying power to the electromagnet from the battery;
A generator for converting the kinetic energy of the permanent magnet rotor into electrical energy to generate the AC power to charge the battery ;
A battery charger that converts AC power generated by the generator into DC power and supplies the DC power to the battery;
A motor for rotating the rotating shaft in response to power supply of the battery;
A converter that converts direct current power of the battery into alternating current power, and supplies alternating current power to the load, the flywheel, and the motor;
A transformer connected between the generator and the battery charger for supplying power to the motor, the flywheel or a load;
A power generator with The power generator according to claim 1 , wherein the battery, the flywheel, or the motor receives surplus power or regenerated power generated in the load.

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