Cyclic power generation apparatus

Abstract

To provide a circulation power generator capable of effectively taking out power on the output side of a generator by arranging a reduction gear between a high-speed power motor and the generator to increase the amount of power.SOLUTION: The power generation system includes a high-speed power motor 2 driven by an inverter 1, a generator 4 connected to the high-speed power motor 2 via a reduction gear 3, and a capacitor 8 for storing power obtained by the generator 4 rotating at a speed lower than that of the high-speed power motor 2, and the inverter 1 is operated according to a remaining amount preset by the capacitor 8.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a device that operates continuously and permanently supplies stable power without emitting CO2, without using external energy such as fossil fuels that emit CO2, a cause of global warming. More specifically, it relates to a circulatory power generation device. [Background technology]

[0002] Commonly known sources of power generation include thermal power generation, nuclear power generation, hydroelectric power generation, wind power generation, and solar power generation.

[0003] Thermal power generation uses energy obtained by burning fossil fuels and wood pellets, and is not suitable as a measure to combat global warming because it emits a huge amount of CO2, which is a cause of global warming, a particular problem these days.

[0004] Nuclear power generation can generate large amounts of electricity without emitting CO2, but it requires large-scale facilities. Furthermore, because it uses the energy released during nuclear reactions to generate electricity, there is always the concern of radiation that can be harmful to the body. Special technology is required to process the nuclear reactions, and it takes many years to reduce the radiation to a level that is not harmful to the body, and there is always the risk of a nuclear explosion.

[0005] Hydroelectric power plants generate electricity by building dams, storing natural water, and using the water pressure created by the difference in elevation. Construction requires a long period of time and a huge budget, and it requires the destruction of nature. It is also commonly said that once a dam is completed, the ecosystems upstream and downstream of the dam change.

[0006] Wind power generation uses wind to generate electricity, but has the fatal drawback of not generating electricity unless the wind blows, making it unsuitable for a stable power supply.

[0007] Solar power generation uses light to generate electricity, and since it does not generate electricity unless it is exposed to light, it has the fatal drawback of not generating electricity in dark places, making it unsuitable for stable power supply day and night.

[0008] Known prior art includes a battery-chargeable generator as disclosed in Patent Document 1. This generator uses a charged battery to rotate a motor, which then rotates the generator to generate electricity, which is then sent to a charger and stored in the battery. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Publication No. 9-285020 Summary of the Invention [Problem to be solved by the invention]

[0010] The above-mentioned conventional technology involves turning a motor with a battery that combines a battery and a charger, which then rotates a generator via a belt or shaft to generate electricity, and then charging the battery with the electricity produced by the generator while turning the motor to generate electricity.However, because the system is simply a combination of a battery, motor, and generator, it is not possible to obtain sufficient power from the generator, and there is a risk that the capacity of the electricity charged into the battery will be insufficient.

[0011] Therefore, in order to solve the above-mentioned problems of the prior art, the present invention aims to provide a circulation power generation system in which a reduction gear is placed between the motor and the generator, thereby enabling the generator's output side to be efficiently powered. This circulation power generation system is a pollution-free, energy-saving circulation type power generation system, and has a simple structure and does not require large-scale construction, so it can be installed in ordinary houses, factories, automobiles, ships, etc. [Means for solving the problem]

[0012] The circulation power generation system of the present invention includes a high-speed electric motor driven by an inverter, a generator connected to the high-speed electric motor via a reduction gear device, and a capacitor that stores electric power obtained by the generator that rotates at a slower speed than the high-speed electric motor, and operates the inverter according to a remaining charge preset in the capacitor.

[0013] In the circulation power generation system of the present invention, the high-speed electric motor and the reduction gear device, and the reduction gear device and the generator are connected by rotatable shafts, respectively.

[0014] In addition, in the circulation power generation device of the present invention, the electric power obtained by the generator is branched, one of which is stored in the capacitor, and the other is stored in a second capacitor to be used as electric power for external use.

[0015] Furthermore, in the circulation power generation system of the present invention, a backflow prevention device and a storage control device are disposed between the generator and the storage battery or between the generator and the second storage battery. [Effects of the Invention]

[0016] According to the circulation power generation system of the present invention, the high-speed electric motor and the generator are connected via a reduction gear, so that the power of the high-speed electric motor is increased, and the generator, which generates electricity at a slower rotation speed than the high-speed electric motor, can obtain more electric power from the output side than from the input side. As a result, efficient power generation is possible by circulating the obtained electric power.

[0017] Furthermore, according to the circulation power generation system of the present invention, by branching the electricity generated by the generator, not only can the generated electricity be circulated for power generation, but the surplus electricity can also be stored and used as external power. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is an explanatory diagram of a circulation power generation system according to the present invention. [Figure 2] 1 is an explanatory diagram of a main part of a circulation power generation device according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A circulation power generation system according to the present invention will be described below based on an embodiment with reference to the drawings, which are schematic diagrams showing circulation power generation devices.

[0020] In Figure 1, reference numeral 1 denotes an inverter, and 2 denotes a high-speed electric motor that operates when inverter 1 is turned on. Electricity is supplied to inverter 1 from a power source, a capacitor (described later). The frequency of inverter 1 is set to match the required rotation speed of high-speed electric motor 2.

[0020] The high-speed electric motor 2 starts rotating when the inverter 1 is turned on, and continues to rotate at a constant speed once it reaches the required rotation speed. For example, the required rotation speed of the high-speed electric motor 2 is 11,700 rpm at 200 V.

[0021] Reference numeral 3 denotes a reduction gear, which is disposed between and connected to the high-speed electric motor 2 and the generator 4. The reduction gear 3 reduces the speed using gears, pulleys, a timing belt, etc., and can increase torque by slowing down the high-speed rotation of the high-speed electric motor 2. The use of a timing belt prevents belt slippage and eliminates rotation loss. In this embodiment, the high-speed electric motor 2, the reduction gear 3, and the generator 4 form a single unit. As shown in FIG. 2, the reduction gear 3 is connected to the output side of the high-speed electric motor 2 and the input side of the generator 4 via shafts 14 and 15, respectively. Note that when the high-speed electric motor 2 is operated, the shafts 14 and 15 may vibrate, generating resonance noise. To prevent such resonance noise, the shafts 14 and 15 may be fitted with vibration-proof rubber, sound-proof rubber, urethane foam, polystyrene foam, etc. In addition, multiple reduction gears 3 may be connected in series.

[0022] The generator 4 is, for example, a three-phase AC generator capable of generating 200V, 10kW of power at 3600 rpm. When the high-speed electric motor 2 starts rotating, the generator 4 also starts rotating via the reduction gear 3, thereby beginning to generate electricity. The electric power generated by the generator 4 is branched downstream of the generator 4, and one branch is charged to the battery 8 via the backflow prevention device 5 and the power storage control device 7. When the automatic operation switch 9 is turned on according to the remaining power level set in the battery 8, current flows to the inverter 1, which restarts the high-speed electric motor 2 and the generator 4, thereby forming a circulation path for power generation. The backflow prevention device 5 is installed to ensure safe operation of the power generation system, and the power storage control device 7 is installed to prevent overcharging. The automatic operation switch 9 is, for example, an electromagnetic switch. Note that power generation may be stopped if the remaining power level of the battery 8 is equal to or greater than a set level. This extends the useful life of the power generation system.

[0023] In the power storage control device 7, a circuit is formed that branches off from the circuit that sends power to the power storage device 8 and is connected to a transformer 6 and the automatic operation switch 9. The transformer 6 transforms the voltage to the set power of the automatic operation switch 9.

[0024] Meanwhile, the other branched power downstream of the generator 4 is sent to a second power storage control device 11 via a second backflow prevention device 10, and is further branched, with one branch being charged into a second battery 12. The power charged into the second battery 12 is surplus power that is not consumed in the generation of power by the generator 4, and can be used as external power according to the application without waste. The other branched power is sent to the automatic operation switch 9 via a second transformer 13.

[0025] The present invention is characterized in that the high-speed electric motor 2 and generator 4 are connected via a reduction gear 3. For example, if the high-speed electric motor 2 rotates at 11,700 rpm on a 200V power supply and outputs 2.2 kW, and the reduction ratio of the reduction gear 3 is set to 1:3.5 for the primary reduction and 1:2 for the secondary reduction, the rotation speed can be reduced to approximately 3,600 rpm on the output side of the reduction gear 3. By reducing the rotation speed of the high-speed electric motor 2 in this way, the torque on the output side increases and the power increases, and theoretically the power of 2.2 kW becomes 15.4 kW. By using a generator 4 that generates power at a slower rotation speed than the high-speed electric motor 2, the output power becomes greater than the input power, making it possible to circulate power.

[0026] Below, a simple explanation will be given as an example based on an actual experiment. The high-speed electric motor 2 on the input side was a high-speed electric motor with a current of 200V, 2.2 kW, and 11,700 rpm.

[0027] In the first experiment, a generator capable of generating 4.4 kW of power at 200 V was used as generator 4. In the second experiment, a generator capable of generating 10 kW of power at 1500 RPM was used.

[0028] In the first experiment, the high-speed electric motor 2 was driven by the inverter 1, and the generator 4 was operated with a reduction ratio of 1:3.5. As a result, approximately 2.7 kW of electric power was obtained at 200 V.

[0029] In the second experiment, the same high-speed electric motor 2 and inverter 1 were used as in the first experiment. Another reduction gear 3 was added, and the generator 4 was operated with a primary reduction ratio of 1:3.5 and a secondary reduction ratio of 1:2. As a result, approximately 7 kW of electric power was obtained at 200 V.

[0030] According to calculations, 7.7 kW of power was expected to be obtained in the first experiment, and 15.4 kW in the second, but as this was still in the prototype stage, there was a lot of loss, resulting in the results shown above. However, the 2.7 kW obtained in the first experiment and the 7 kW obtained in the second both prove that the output power is greater than the input power.

[0031] Based on the second experiment, it was found that approximately 7 kW of output power from the generator 4 can be stored in the storage battery 8 and used as input power. If the input power required for the generator 4 is approximately 2.7 kW at 200 V, storing approximately 3 kW of 200 V power makes it possible to generate power continuously, and the remaining 4 kW can be used continuously for external use. This allows for a stable supply of power to be obtained on a permanent basis.

[0032] In this experiment, the same high-speed electric motor 2 was used, but more power can be obtained by using a faster motor, or by using a generator 4 that generates power at a lower speed.

[0033] This technology does not rely on fossil fuels and does not emit CO2, making it possible to supply clean electricity that contributes to combating global warming. Globally, it can also contribute to countries and regions in need of electricity. Furthermore, by installing it in automobiles, ships, construction equipment, and other vehicles, it will enable environmentally friendly transportation and logistics. [Explanation of symbols]

[0034] 1 inverter 2. High-speed electric motor 3 Reduction device 4. Generator 5 Backflow prevention device 6. Transformers 7. Storage control device 8. Capacitor 9 Automatic operation switch 10 Second backflow prevention device 11 Second power storage control device 12 Second capacitor 13 Second transformer 14,15 shaft

Claims

1. The electric power generating device comprises a high-speed electric motor driven by an inverter, a generator connected to the high-speed electric motor via a reduction gear device, and a capacitor for storing electric power obtained by the generator which rotates at a lower speed than the high-speed electric motor, A circulating power generation device that operates the inverter according to a preset remaining amount in the capacitor.

2. 2. The circulation power generation system according to claim 1, wherein the high-speed electric motor and the reduction gear device, and the reduction gear device and the generator are connected by rotatable shafts, respectively.

3. 2. The circulating power generation system according to claim 1, wherein the electric power generated by the generator is branched, one of which is stored in the capacitor and the other of which is stored in a second capacitor to be used externally.

4. The circulation power generation system according to claim 3 , wherein a backflow prevention device and a storage control device are disposed between the generator and the storage device or between the generator and the second storage device.

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