KR20120130738A - Closed energy combined cycle system and operation method thereof - Google Patents

Abstract

PURPOSE: A closed energy combined cycle system and an operation method thereof are provided to reduce resources by generating electric power with a power generating device. CONSTITUTION: A enclosed type energy combined cycle system(10) comprises an electricity storage device(12), a converter(14), a controller(16), an electric motor(18), a transmission(20), a power transmission shaft(22), a rotation speed detector(26), a generator(28) and a load(30). The electricity storage device a converter, a controller and a rotation speed detector. A driving apparatus includes an electric motor. The electricity storage device provides the low voltage power source. The converter changes the low voltage of the electricity storage device to high voltage. The controller outputs the power to the electric motor. [Reference numerals] (12) Electricity storage device; (14) Converter; (16) Controller; (18) Electric motor; (20) Transmission; (26) Rotation speed detector; (30) Load

Description

CLOSED ENERGY COMBINED CYCLE SYSTEM AND OPERATION METHOD THEREOF}

The present invention relates to a closed energy combined cycle system and an operation method thereof, wherein the system and method can improve power generation efficiency of a generator.

As people's quality of life becomes higher, many electrical appliances and power plants (e.g., vehicles, ships and airplanes, etc.) are already used in life or at work. The energy used in electrical appliances and power plants is petroleum, natural gas, solar energy, atomic energy and the like. However, such energy has a problem of exhaustion, a problem in application technology to be solved, or a great risk in use.

A power drive mechanism (for example, a steam turbine, a hydro turbine, a turbine, etc.) produces electric power by transmitting power to a power generation apparatus through an electric shaft. In the power drive mechanism or the generator itself, energy loss occurs during operation, and when the generator is operated at a low rotational speed, the generation efficiency of the generator is not high, so the efficiency of the entire system is greatly reduced. do. Therefore, when the power generation device generates a constant electric energy, the power drive mechanism needs to consume more resources to drive the power generation device, resulting in more global resource problems and environmental conservation problems.

SUMMARY OF THE INVENTION The present invention provides a closed energy combine cycle system and operates the drive mechanism and power generator at high rotational speed, thereby reducing energy loss during operation of the drive mechanism or power generator, and generating power generation efficiency of the power generator. Since it can improve, the efficiency of the whole system improves significantly. Therefore, when the power generation device generates a constant electric energy, the resource consumed by the drive mechanism to drive the power generation device can be reduced, thereby effectively reducing the consumption of the earth's resources, and thus the problem of global environmental conservation. It can also be effectively improved.

The present invention provides a power supply mechanism for providing a high voltage, a drive device which is controlled to operate at the high voltage provided by the power supply mechanism, and is rotated and generated by an electric shaft by the drive device, and the generated power is A closed energy combine comprising a power supply mechanism and at least one power generation device provided to the load, wherein the drive device generates power by rotating the power shaft at a high rotational speed and by rotating the at least one power generator with the power shaft. To provide a de-cycle system.

In the closed energy combined cycle system according to the present invention, the power supply mechanism is used to provide a low voltage, and is also provided by the power storage device and the power storage device charged by the at least one power generation device. A controller for converting the low voltage into the high voltage, a controller that receives the high voltage provided by the converter to control the operation of the drive device, and detects the rotational speed of the transmission shaft, thereby causing the drive device to be driven. A rotational speed detector for generating a rotational speed signal for controlling the rotational speed of operation.

In the closed energy combined cycle system according to the present invention, the power storage device is one of a lead-acid battery, a nickel hydride battery and a lithium battery.

In the closed energy combined cycle system according to the present invention, the converter is one of a DC to DC converter and a DC to AC converter.

In the closed energy combine cycle system according to the present invention, the controller is one of an AC servo, a DC servo, and a frequency converter.

In the closed energy combined cycle system according to the present invention, the drive device is one of an alternating current motor, a direct current motor, a magnetic levitation motor, and a permanent magnet motor.

The closed energy combine cycle system according to the present invention further includes a transmission mounted between the drive device and the drive shaft and for changing a rotational speed of the drive device for rotating the drive shaft.

In the closed energy combined cycle system according to the present invention, the transmission is a continuously variable transmission or a stepped transmission.

In the closed energy combined cycle system according to the present invention, the at least one power generator is one of an alternator and a direct current generator.

The present invention provides a method of operating a closed energy combined cycle system including a power supply mechanism, a drive device and at least one power generation device, wherein the power supply mechanism provides a high voltage to the drive device. Controlling the driving of the motor, rotating the electric shaft at a high rotational speed, generating the electric power by rotating at least one electric power generator with the electric shaft, and power generated by the at least one electric power generator. Providing to the power supply mechanism and the load.

In the operation method according to the present invention, the converter in the power supply mechanism converts the low voltage of the power storage device in the power supply mechanism to the high voltage.

In the operation method according to the present invention, the rotational speed detector of the power supply mechanism detects the rotational speed of the transmission shaft, and the controller at the power supply mechanism is based on the rotational speed signal of the rotational speed detector. The operation of the drive device is controlled.

In the operating method according to the present invention, the transmission in the closed energy combined cycle system changes the rotational speed at which the drive device rotates the transmission shaft.

In the operation method according to the present invention, the at least one power generation device charges the power storage device in the power supply mechanism.

1 is a system configuration diagram of a closed energy combined cycle system of the present invention.
2 is a schematic diagram of a connection relationship between a transmission, an electric motor, and an electric shaft of the present invention.
3 is a system diagram of another closed energy combine cycle system of the present invention.

The closed energy combine cycle system of the present invention comprises a power supply mechanism, a drive device and at least one power generation device. The power supply mechanism is used to provide a high voltage. Operation of the drive device is controlled by the high voltage provided by the power supply mechanism. A drive device generates power by rotating the at least one power generation device through a transmission shaft, and provides power to the power supply mechanism and the load generated by the at least one power generation device. Here, the drive device rotates the electric shaft at a high rotational speed, and the electric power is generated by rotating the at least one power generator with the electric shaft.

The driving device generates power by rotating the at least one power generating device at a high rotational speed through a transmission shaft, so that the at least one power generating device at a high rotational speed can generate higher efficiency. As described above, when the at least one power generating device generates constant electric energy, the driving device can reduce the electric energy consumed to rotate the at least one power generating device through the electric shaft, thereby closing energy. Improve the generation efficiency of the combined cycle system.

Hereinafter, the structure and operation method of the closed energy combined cycle system of the present invention will be described using one embodiment.

1 is a system configuration diagram of a closed energy combined cycle system of the present invention. In FIG. 1, the closed energy combined cycle system 10 includes a power storage device 12, a converter 14, a controller 16, an electric motor 18, a transmission 20, a transmission shaft 22, and rotation. A speed detector 26, a generator 28, and a load 30. Here, the electrical storage device 12, the converter 14, the controller 16, and the rotational speed detector 26 constitute a power supply mechanism of this embodiment, and the electric motor 18 constitutes a drive device of this embodiment. The generator 28 constitutes the power generation device of the present embodiment. In another embodiment, the closed energy combine cycle system does not have to include a transmission.

The electrical storage device 12 is used to provide a low voltage power supply. The electrical storage device 12 may be a lead-acid battery, a nickel hydride battery or a lithium battery.

The converter 14 is used to convert the low voltage of the electrical storage device 12 into a high voltage, and transmit the converted power to the controller 16. The converter 14 may be a DC-to-DC converter or a DC-to-AC converter.

The controller 16 receives the power transmitted by the converter 14 and simultaneously controls the operation of the electric motor 18 by outputting control power to the electric motor 18. For example, the electric motor 18 operates. Control the rotation speed. The controller 16 may be an AC servo, a DC servo, or a frequency converter, and the electric motor 18 may be an AC motor, a DC motor, a magnetic levitation motor, or a permanent magnet motor.

2 is a schematic diagram of a connection relationship between a transmission, an electric motor, and an electric shaft of the present invention. 1 and 2, the transmission 20 is mounted between the electric motor 18 and the electric shaft 22, and the transmission 20 converts the high rotational speed at which the electric motor 18 operates into another rotational speed. This rotates the transmission shaft 22. The transmission 20 may increase or decrease the high rotational speed at which the electric motor 18 operates (in this embodiment, the transmission 20 may adjust the rotational speed of the electric shaft 22 to the electric motor 18). Higher than the high rotational speed of driving). The transmission 20 may be a stepped transmission or a continuously variable transmission. In another embodiment, the transmission 20 does not need to be mounted between the electric motor 18 and the electric shaft 22, and the electric motor 18 directly rotates the electric shaft 22 (dashed line in FIG. 1). Shown).

1 and 2, the transmission 20 rotates the electric shaft 22 (in another embodiment, as shown by the broken line in FIG. 1), the electric motor 18 is the electric shaft 22. When the generator 28 is rotated by directly rotating the generator 28, the generator 28 operates at a rotational speed higher than the high rotational speed at which the electric motor 18 operates (in another embodiment, the generator 28 ) Operates at the same rotational speed as the high rotational speed at which the electric motor 18 operates. The electric shaft 22 rotates the generator 28 to generate the generator 28, and the electric power generated by the generator 28 is supplied to the load 30 and also charged to the power storage device 12. Can be. Here, the generator 28 may be a direct current generator or an alternator.

The rotational speed detector 26 detects the rotational speed of the transmission shaft 22 and simultaneously generates a rotational speed signal. The rotational speed signal detected by the rotational speed detector 26 is transmitted to the controller 16, and the controller 16 controls the driving speed at which the electric motor 18 operates based on the received rotational speed signal, that is, The rotation speed of the transmission shaft 22 is indirectly controlled.

Next, the operation method of the closed energy combined cycle system 10 of this embodiment is demonstrated, referring FIG. 1 and FIG.

First, the converter 14 converts the low voltage of the electrical storage device 12 into a high voltage, and simultaneously transmits a high voltage power supply to the controller 16.

The controller 16 generates control power by the high voltage power received based on the rotation speed signal of the rotation speed detector 26, and outputs the control power to the motor 18 to operate the motor 18. Control (for example, controlling the rotational speed at which the electric motor 18 operates).

When the rotation of the transmission shaft 22 is at a standstill or does not reach the high rotation speed set by the controller 16, the rotation speed detector 26 detects the stop or low rotation speed of the transmission shaft 22 by The generated rotational speed signal is transmitted to the controller 16. Since the rotational speed signal of the stop or low rotational speed is lower than the value of the high rotational speed preset by the controller 16, the controller 16 increases the control power output to the electric motor 18, for example, , Increases the rotational speed at which the electric motor 18 operates. The electric motor 18 with the increased rotational speed drives the transmission 20 to rotate the transmission shaft 22, thereby increasing the rotational speed of the transmission shaft 22 (in another embodiment, as shown in FIG. As shown by the broken line, the electric motor 18 directly rotates the electric shaft 22). By repeatedly operating in the above operation step, the rotation speed of the transmission shaft 22 is gradually adjusted to reach the high rotation speed set by the controller 16.

Here, the transmission 20 is mounted between the electric motor 18 and the transmission shaft 22, and the high speed which the motor 18 drives the rotational speed of the transmission shaft 22 by the transmission function of the transmission 20 is carried out. It can be a multiple of the rotation speed. By increasing the rotational speed of the transmission shaft 22 and rotating the generator 28 of the high-speed rotation shaft 22, the generator 28 can obtain more excellent power generation efficiency. In addition, since the motor 18 and the generator 28 operate at a high rotational speed, the operating loss of the motor 18 and the generator 28 itself is reduced.

The generator 28 generates power when the high-speed electric shaft 22 rotates the generator 28. The electric power generated by the generator 28 can be supplied to the load 30 and can be charged to the power storage device 12.

The electrical storage device 12 supplies control power to the electric motor 18 through the converter 14 and the controller 16, and also charges the electrical storage device 12 by generating the generator 28. As such, energy recycling, such as conversion of electrical energy to kinetic energy, and conversion of kinetic energy to electrical energy, of the closed energy combine cycle system 10 can be achieved.

In the present embodiment, the closed energy combined cycle system 10 may be used for power supply facilities such as vehicles, ships, airplanes or residential complexes, and the electric motor 18 operates the generator 28 at a high rotational speed. By driving, the closed energy combine cycle system 10 can obtain higher power generation efficiency.

3 is a system configuration diagram of another closed energy combined cycle system of the present invention. Compared with the structure of the closed energy combine cycle system 10 of FIG. 1, the structure of the closed energy combine cycle system 40 of FIG. 3 is different from that of the transmission shaft 22 in FIG. 3. The generators 281, 282, 283, and 284 are rotated, and the power generated by these generators 281, 282, 283, and 284 is transmitted to the bus 38, so that the power storage device 12 and the load 30 The power is received from the bus 38.

Since the operation method of the closed energy combine cycle system 40 of FIG. 3 is the same as the operation method of the closed energy combine cycle system 10 of FIG. 1, the description of the operation method is abbreviate | omitted here.

An advantage of the present invention is to provide a closed energy combine cycle system to operate the motor and generator at high rotational speed, thereby reducing the energy loss during operation of the motor or generator, and improving the power generation efficiency of the generator. This greatly improves the efficiency of the entire closed energy combine cycle system. Therefore, when the generator generates a constant electric energy, by reducing the resources consumed by the electric motor to drive the generator, it is possible to effectively reduce the consumption of the earth's resources and also to effectively protect the environment. This can be improved.

While the invention has been described above with reference to preferred embodiments and exemplary drawings, they should not be considered as limiting the invention. In any case where a person skilled in the art makes various modifications, omissions, and changes in the content of the embodiments and specific examples, they do not depart from the claims claimed by the present invention.

10: closed energy combine cycle system
12: power storage device
14: converter
16: controller
18: electric motor
20: transmission
22: electric shaft
26: rotational speed detector
28: generator
30: load
38: the bus
40: Closed Energy Combine Cycle System
281: generator
282: Generator
283: generator
284: generator

Claims (14)

A power supply mechanism for providing a high voltage,
A driving device in which operation is controlled at the high voltage provided by the power supply mechanism;
Rotation is generated through the electric shaft by the drive device for generating power, wherein the generated power is provided to the power supply mechanism and the load includes at least one power generation device,
A closed energy bind cycle system, wherein the drive device rotates the power shaft at a high rotational speed and generates power by rotating at least one power generator with the power shaft. The method of claim 1,
The power supply mechanism,
A power storage device used to provide a low voltage, and also charged by the at least one power generation device;
A converter for converting the low voltage provided by the power storage device to the high voltage;
A controller which receives the high voltage provided by the converter and controls the operation of the driving device;
And a rotational speed detector for generating a rotational speed signal for controlling the rotational speed at which the drive device operates by detecting the rotational speed of the transmission shaft. The method of claim 2,
The power storage device is one of a lead-acid battery, a nickel hydride battery and a lithium battery. The method of claim 2,
The converter is one of a direct current to direct current converter and a direct current to alternating current converter. The method of claim 2,
The controller is one of an alternating current servo, a direct current servo, and a frequency converter. The method of claim 1,
The drive device is a closed energy combined cycle system, which is one of an alternating current motor, a direct current motor, a magnetic levitation motor, and a permanent magnet motor. The method of claim 1,
And a transmission mounted between the drive device and the drive shaft, the transmission for changing a rotational speed of the drive device for rotating the drive shaft. The method of claim 7, wherein
The transmission is a closed energy combined cycle system, a stepless transmission or a stepped transmission. The method of claim 1,
The at least one power generating device is one of an alternator and a direct current generator, closed energy combined cycle system. A method of operating a closed energy combined cycle system comprising a power supply mechanism, a drive device and at least one power generation device,
Controlling the operation of the driving device by providing a high voltage to the power supply mechanism;
The drive unit rotating the transmission shaft at a high rotational speed,
Generating power by rotating at least one power generating device with the transmission shaft;
Providing power generated by the at least one power generation device to the power supply mechanism and the load. 11. The method of claim 10,
And a converter in the power supply mechanism converts the low voltage of the power storage device in the power supply mechanism to the high voltage. 11. The method of claim 10,
The rotational speed detector in the power supply mechanism detects the rotational speed of the transmission shaft to generate a rotational speed signal, and the controller in the power supply mechanism drives the drive based on the rotational speed signal of the rotational speed detector. Operation method for controlling the operation of the device. 11. The method of claim 10,
And a transmission in said closed energy combined cycle system changes the rotational speed of said drive device for rotating said transmission shaft. 11. The method of claim 10,
And the at least one power generation device charges the power storage device in the power supply mechanism.

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