KR20090079446A - Power generation apparatus for multiple generator and power generation method - Google Patents

Abstract

A power generation apparatus equipped with a multi-stage generator and a power generation method are provided to produce power higher than the rated output power as the main and auxiliary generators are driven by the torque sensor when wind speed or flux over the rated output power is supplied from the blade. A power generation method of a power generation apparatus equipped with a multi-stage generator comprises a step of rotating a blade at one end of a shaft, in which the generator with a torque sensor is inserted, by wind speed or flux(S10), a step of producing electricity as a main generator is driven by a torque sensor when the wind speed or flux from the blade is supplied at rated power speed of the main generator, a step of producing electricity as the main generator and an auxiliary generator are driven by the torque sensor when the wind speed or flux from the blade is supplied over the rated power speed(S30), and a step of collecting the electricity from the main and auxiliary generators in an inverter through a coil(S40).

Description

Power generation apparatus having a multi-stage generator and its power generation method {Power generation apparatus for multiple generator and power generation method}

The present invention relates to a power generation apparatus having a multi-stage generator and a power generation method thereof, and more particularly, according to the strength of the wind speed or flow rate supplied within a predetermined range with respect to the rated output, that is, torque transmitted to the power shaft. The present invention relates to a power generation apparatus having a multi-stage generator in which multiple generators are operated in sequence to produce electric power from each generator, and a power generation method thereof.

In general, natural energy is being developed as an alternative energy that is pollution-free and hardly causes environmental pollution by replacing energy such as petroleum or coal currently used. The natural energy uses solar (solar), hydro, tidal or wind power. It is to get energy in natural state such as geothermal.

However, the wind power generation or the power generation using the flow rate of the sea or river rotates the blade using the wind or the flow rate of the natural state, the shaft and gear mechanism that is powered by the rotation of the blade (Blade) Power generation by using a device such as, when the wind or flow rate is provided below the speed (rated output speed) required by the generator, no power production at all, or the speed required by the generator (rated output speed) When provided above, by controlling the power generation is produced only by a predetermined value, an inefficient problem occurs in power generation.

For example, in the case of a typical wind generator (for example, 1000KW class generator), the rated output (1000KW) is produced when the wind speed is 12 ~ 13m / sec, the blade is rotated when the wind speed is less than 12 ~ 13m / sec Generates power but outputs less than rated output (less than 1000 kW), where the number of revolutions of the generator is constant and the amount of power produced depends on the torque delivered to the shaft, the magnitude of the force. The power produced when it is more than 12 ~ 13m / sec and less than 22 ~ 25m / sec always gets constant output value at rated power (1000KW), and if the wind speed exceeds 22 ~ 25m / sec, the blade does not operate. It is usually designed to prevent power generation.

In order to solve the problems as described above, in the present invention, one main generator and a plurality of auxiliary generators each having a torque sensor are provided, so that the wind speed (12 ~ 25m / sec) or flow rate that can produce power above the rated output When supplying (2 ~ 8m / sec), when the torque transmitted to the power shaft by the torque sensor provided in the generator (Torque) is increased, the power generation device having a multi-stage generator capable of producing power above the rated output and The purpose is to provide the development method.

In order to achieve the object, the fixed block and the inverter is provided on one side of the upper surface of the support, the fixed block is provided with a blade at the end, one main generator consisting of the first insulating plate, the second insulating plate and the magnetic material And one end of the shaft into which N (N = 1 or more) auxiliary generators are inserted, and an insertion groove is formed on the support upper surface to fix the fixing member of the second insulating plate.

In another aspect of the present invention, the front end portion of the main generator and the auxiliary generator is provided with a torque sensor, respectively, the generator is driven by the torque sensor, the power produced by each generator is a coil of the second insulating plate Through the dust collector is provided on the upper surface of the support.

In order to achieve the object, there is provided a method comprising: a first step of rotating a blade of one end of a shaft into which a generator with a torque sensor is inserted by a wind speed or a flow rate; A second step of generating power while the main generator is driven by a torque sensor when the wind speed or flow rate supplied by the rotation of the blade is supplied at the rated output speed of the main generator; A third step of generating power while the main generator and the sub-generator are driven by the torque sensor when the wind speed or flow rate supplied from the blade is supplied at a rated output speed or more; And a fourth step of collecting power generated by the main generator and the auxiliary generator to the inverter through a coil.

As described above, the present invention is provided with a multi-stage power generation device composed of a main generator and a plurality of auxiliary generators to produce electric power using wind speed or flow rate, but after obtaining the rated output to the highest point of the blade operation It is possible to additionally produce power according to the strength of the wind speed or flow rate supplied within the power shaft, that is, the torque transmitted to the power shaft. Therefore, when the torque transmitted to the power shaft increases, the power output above the rated output is possible. There is.

1 is an embodiment of a power generation device having a multi-stage generator according to the present invention, Figure 2 is a view showing a first insulating plate of the power generation device having a multi-stage generator according to the present invention, Figure 3 is a present invention 2 is a view showing a second insulating plate of a power generation device having a multi-stage generator according to Figure 4 is a view showing a magnetic material of the power generation device having a multi-stage generator according to the invention, Figure 5 is a multi-stage of 6 is a detailed configuration diagram of a shaft provided in a stationary block of a power generator including a generator, and FIG. 6 is a flowchart illustrating a power generation method using a power generator including a multistage generator according to the present invention.

Hereinafter, the components will be described with reference to the drawings.

1 is an embodiment of a power generation device having a multi-stage generator according to the present invention, the power generation device is composed of a support 10, the main generator 20 and the auxiliary generator 30.

The support 10 is fixed to the ground or the bottom surface, the fixing block 11 and the inverter 15 is provided on one side of the upper surface of the support 10, the fixed block 11, the blade 13 Is inserted into the shaft 12 is provided at the end, the cable 16 is connected to the outside of the inverter 15.

Generators 20 and 30 are inserted into the shaft 12, and the generators 20 and 30 are spaced apart by a distance between magnets (x) such that the N pole and the S pole are alternately arranged as shown in FIGS. Permanent magnets 211 and 311 are provided on both sides along the circumferential direction, and a pair of first insulating plates 21 and 31 through which the insertion holes 212 and 312 pass through the center portion and a pair of both sides of the first insulating plates 21 and 31. The coils 221 and 321 are wound so as to be spaced apart from each other by the same coil spacing y as the spacing between magnets x, through-holes 222 and 322 penetrate through the center portion, and fixing members 223 and 323 in the vertical direction on one outer peripheral surface thereof. Is provided outside the second insulating plates 22 and 32 and the pair of second insulating plates 22 and 32, respectively, and grooves 231 and 331 are formed at the same interval as the inter-magnet spacing x. In the central portion, the insertion holes 232 and 332 are formed of magnetic bodies 23 and 33.

The fixed block 11 provided on one side of the upper surface of the support 10 includes a first insulating plate 21 and 31, a second insulating plate 22 and 32, and a magnetic body 23 and 33. One end of the shaft 12 into which the main generator 20 and N (N = 1 or more) auxiliary generators 30 are inserted is fixed, and the second insulating plates 22 and 32 are fixed to the upper surface of the support 10. The insertion groove 10a is formed as shown in FIG. 3 to fix the members 223 and 323.

Torque sensors T are provided on the first insulating plates 21 and 31 at the front ends of the main generator 20 and the auxiliary generator 30, respectively, and the generators 20 and 30 are driven by the torque sensors T. While producing power, and the power produced by each of the generators 20 and 30 is collected by the inverter 15 provided on the upper surface of the support 10 through the coils 221 and 321 of the second insulating plates 22 and 32. The power collected in the inverter 15 is supplied to the outside through the cable 16.

The insertion holes 212 and 312 of the first insulating plates 21 and 31 and the insertion holes 232 and 332 of the magnetic bodies 23 and 33 are formed to have the same diameter as that of the shaft 12 so that the shaft 12 is fitted and fixed thereto. The through holes 222 and 322 of the second insulating plates 22 and 32 are formed to have a diameter larger than the diameter of the shaft 12 and are not fixed to the shaft 12, and are supported by the fixing members 223 and 323. 10 is inserted into and fixed to the insertion groove 10a formed on the upper surface.

The grooves 231 and 331 are formed in the magnetic bodies 23 and 33 at the same interval corresponding to the inter-magnet spacing x of the first insulating plates 21 and 31, so that the permanent magnets of the first insulating plates 21 and 31 are formed. To form a perfect magnetic force between 211 and 311 and the magnetic bodies 23 and 33, and each region of the magnetic bodies 23 and 33 magnetized by the permanent magnets 211 and 311 of the first insulating plates 21 and 31. The polarity of can be clarified.

In addition, the interval z between the first insulating plates 21 and 31 and the magnetic bodies 23 and 33 illustrated in FIG. 1 is formed to be smaller than the interval x between the magnets of the first insulating plates 21 and 31. The magnetic force of the permanent magnets 211 and 311 derived from the magnetic bodies 23 and 33 may be maximized.

The areas of the coils 221 and 321 of the second insulating plates 22 and 32 provided between the first insulating plates 21 and 31 and the magnetic bodies 23 and 33 are permanent magnets 211 and 311 of the first insulating plates 21 and 31. The power generation efficiency can be increased by the same or larger area, and end portions of each of the coils 221 and 321 wound on the second insulation plates 22 and 32 are connected to the inverter 15 provided on the upper portion of the support 10. The supplied power is converted into power desired by the user and supplied through the cable 16.

As illustrated in FIG. 1, a power generator having a multi-stage generator of the present invention configured as described above, with reference to an embodiment using a main generator 20 and four auxiliary generators 30, The power generation method installed in the sea floor will be described with reference to the flowchart of FIG. 6.

For reference, in the main generator 20 and the four auxiliary generators 30, as shown in Figure 1, the main generator 20 is fixed to the first shaft 12, the first auxiliary generator 30 is It is fixed to the second shaft 12a, the second auxiliary generator 30a is fixed to the third shaft 12b, the third auxiliary generator 30b is fixed to the fourth shaft 12c, and the fourth auxiliary generator 30c is fixed to the fifth shaft 12d. As shown in FIG. 5, a predetermined section of the first shaft 12 is inserted into the second shaft 12a, and the second shaft 12a The predetermined section is inserted into the third shaft 12b, and the predetermined section of the third shaft 12b is inserted into the fourth shaft 12c, and the predetermined section of the fourth shaft 12c is the fifth shaft. It is inserted into (12d), one side of the first shaft 12 to the fifth shaft (12d) is fixed to the fixed block (11). In addition, a first torque sensor T ₁ is provided at the front end portion of the first insulating plate 21 of the main generator 20, and includes first to fourth auxiliary generators 30, which are sequentially provided at the rear end of the main generator 20. The first insulating plate 31 of each of the front end portions 30a, 30b, and 30c is provided with second to fifth torque sensors T ₂ to T ₅ , respectively.

First, in a state in which a power generator having a multi-stage generator operated at a wind speed or a flow rate is installed on a ground or a sea floor, the generators 20 and 30 with a torque sensor T are inserted by the wind speed or flow rate. The blade 13 of one end of the shaft 12 is rotated (step S10).

When the wind speed or flow rate supplied by the rotation of the blade 13, that is, the torque transmitted to the power shaft is supplied at the rated output speed of the main generator 20 by the first torque sensor T ₁ . As the main generator 20 is driven, the second insulating plate fixed to the insertion groove 10a of the support 10 while the first insulating plate 21 and the magnetic body 23 fixed to the first shaft 12 are rotated ( The coil 221 of the 22 to produce power (step S20).

When the wind speed or flow rate supplied from the blade 13, that is, the torque transmitted to the power shaft is supplied at or above the rated output speed, the main generator 20 and the second generator 20 are driven by the first torque sensor T ₁ . The first to fourth auxiliary generators 30, 30a, 30b, and 30c are driven by the ~ 5 torque sensors T ₂ to T ₅ , and are respectively fixed to the second to 12th to fifth axes 12d. The second insulating plate 32 fixed to the insertion groove 10a of the support 10 while the first insulating plate 31 and the magnetic body 33 of the first to fourth auxiliary generators 30, 30a, 30b, and 30c of the support 10 rotate. The coil 321 is to produce power (step S30).

The power generated by the main generator 20 and the first to fourth auxiliary generators 30, 30a, 30b, and 30c are collected by the coils 221 and 321 to the inverter 15, and the collected power is connected to a cable ( 16) is supplied to the outside (step S40).

In the power generation method, the output of the auxiliary generator 30 compared to the rated output (1000KW) of the main generator 20 is configured to 100KW, which is 10%, will be described in more detail as a first embodiment using the wind speed.

When the wind speed is supplied at 12.0 to 14.5 m / sec from the blade 13, torque is transmitted to the first shaft 12, and the main generator 20 is driven by the first torque sensor T ₁ . When the wind speed is supplied at 14.5 to 17.0 m / sec, torque is transmitted to the first and second shafts 12 and 12a so that the first torque sensor T _{1 is produced.} The main generator 20 is driven by the electric power of the rated output (1000KW) and the first auxiliary generator 30 is driven by the second torque sensor T ₂ to produce the additional output (100KW). When the wind speed is supplied at 17.0 to 19.5 m / sec, torque is transmitted to the first to third axes 12, 12a and 12b, and the main generator 20 is transmitted by the first torque sensor T ₁ . Is driven while the _{first and} second auxiliary generators 30 and 30a are driven by the power of the rated output (1000KW) and the second and third torque sensors (T _{2 and} T ₃ ). To produce power, and the wind speed is supplied at 19.5 ~ 22.0m / sec. , No. 1-4 of the axial torque (Torque) to (12,12a, 12b, 12c) is passed first torque sensor rated output (1000KW) while driving a main generator (20) by (T ₁₎ power; The _first , _second and third auxiliary generators 30, 30a, and 30b are driven by the _second , _third and fourth torque sensors T ₂ , T ₃ , and T ₄ , and the additional output (100KW + 100KW + 100KW = 300KW) When the wind speed is supplied at 22.0 to 24.5m / sec, torque is transmitted to the first to fifth axes 12, 12a, 12b, 12c, and 12d, and the first torque sensor T _1. The main generator 20 is driven by the power of the rated output (1000KW) and the _second , _third , _fourth and _fifth torque sensors (T ₂ , T ₃ , T ₄ , T ₅ ). 3,4 auxiliary generators (30, 30a, 30b, 30c) is driven to produce the power of additional output (100KW + 100KW + 100KW + 100KW = 400KW).

In addition, when the wind speed supplied to the blade 13 is 25m / sec or more, the operation of the generator (20, 30) is stopped.

In the power generation method, the output of the auxiliary generator 30 compared to the rated power (1000KW) of the main generator 20 is configured to 100KW, which is 10%, and the second embodiment using the flow rate will be described in detail as follows.

When the flow rate is supplied at 2.0 to 3.2 m / sec from the blade 13, torque is transmitted to the first shaft 12, and the main generator 20 is driven by the first torque sensor T ₁ . When the flow rate is supplied at 3.2 to 4.4 m / sec, torque is transmitted to the first and second shafts 12 and 12a so that the first torque sensor T _{1 is produced.} The main generator 20 is driven by the electric power of the rated output (1000KW) and the first auxiliary generator 30 is driven by the second torque sensor T ₂ to produce the additional output (100KW). When the flow rate is supplied at 4.4 to 5.6 m / sec, torque is transmitted to the first to third axes 12, 12a, and 12b, and the main generator 20 is transmitted by the first torque sensor T ₁ . Is driven while the power of the rated output (1000KW) and the _{first and} second auxiliary generators (30,30a) are driven by the second and third torque sensors (T _{2 ,} T ₃ ) and additional output (100KW + 100KW = 200KW). When the power is supplied at 5.6 ~ 6.8m / sec, the first ~ Torque is transmitted to the four shafts 12, 12a, 12b, and 12c, and the main generator 20 is driven by the first torque sensor T _{1 while} the power of the rated output (1000KW) and the second and the third motors are driven. The _first , _second and third auxiliary generators 30, 30a and 30b are driven by the four torque sensors T ₂ , T ₃ and T ₄ to produce additional output (100KW + 100KW + 100KW = 300KW). When the flow rate is supplied at 6.8 to 8.0 m / sec, torque is transmitted to the first to fifth axes 12, 12a, 12b, 12c, and 12d, and the main torque is transmitted by the first torque sensor T ₁ . The generator 20 is driven and the _first , _second , _third and _fourth subsidiary by the power of the rated output (1000KW) and the _second , _third , _fourth and _fifth torque sensors T ₂ , T ₃ , T ₄ and T ₅ . As the generators 30, 30a, 30b, and 30c are driven, they produce power of additional output (100KW + 100KW + 100KW + 100KW = 400KW).

In addition, when the flow rate supplied to the blade 13 is 8.0m / sec or more, the operation of the generator (20, 30) is stopped.

An embodiment as described above is described as producing power by using one main generator 20 having a rated output of 1000KW and four auxiliary generators 30 having an output value of 100KW that is 10% of the rated output. However, the number of auxiliary generators 30 used in the present invention can be configured with one or more, and the output value can also be selectively used within the range of 1 ~ 99% of the rated output.

Therefore, the present invention uses the main generator 20 and the plurality of auxiliary generators 30 to which the torque sensor T is attached, respectively, to supply wind speed (12-25 m / sec) or flow rate (2-8 m / sec). Depending on the strength of the power can be produced above the rated output.

While the invention has been shown and described with respect to particular embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention as set forth in the appended claims. Anyone can grow up easily.

1 is an embodiment of a power generation apparatus having a multi-stage generator according to the present invention.

2 is a view showing a first insulating plate of a power generation device having a multi-stage generator according to the present invention.

3 is a view showing a second insulating plate of a power generation device having a multi-stage generator according to the present invention.

Figure 4 is a view showing a magnetic body of the power generation apparatus having a multi-stage generator according to the present invention.

Figure 5 is a detailed configuration diagram of the shaft provided in the fixed block of the power generator having a multi-stage generator according to the present invention.

Figure 6 is a flow chart illustrating a power generation method using a power generation device having a multi-stage generator according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: support 11: fixed block

12: axis 13: blade

15 inverter 16 cable

20: main generator 21: the first insulating plate

22: second insulating plate 23: magnetic material

30: auxiliary generator 31: first insulating plate

32: second insulating plate 33: magnetic material

T ₁ , T ₂ , T ₃ , T ₄ , T ₅ : Torque sensor

Claims (5)

Permanent magnets 211 and 311 are spaced apart at intervals x between the magnets so that the N poles and the S poles are alternately disposed on both sides along the circumferential direction, and the first insulating plate 21 through which the insertion holes 212 and 312 penetrate through the center portion. 31) and a pair provided on both sides of the first insulating plates 21 and 31, and coils 221 and 321 are wound so as to be spaced apart from each other by a coil distance y equal to the gap between magnets x. Holes 222 and 322 are penetrated, and one outer peripheral surface of the second insulating plates 22 and 32 protruding from the fixing members 223 and 323 in the vertical direction and the pair of second insulating plates 22 and 32, respectively. In the power generation apparatus having a multi-stage generator composed of magnetic bodies 23, 33 through which insertion holes 232, 332 are formed, and grooves 231 and 331 are formed at the same interval as the interval between the magnets x. A fixing block 11 and an inverter 15 are provided at one side of the upper surface of the support 10, and a blade 13 is provided at the end of the fixing block 11, and the first insulating plates 21 and 31 and the first insulating plate 21 are disposed at the ends. One end of the shaft 12 into which one main generator 20 and N (N = 1 or more) auxiliary generators 30 composed of two insulating plates 22 and 32 and magnetic bodies 23 and 33 are inserted is fixed. The generator 10 has a multi-stage generator, characterized in that the insertion groove (10a) is formed so that the fixing member (223, 323) of the second insulating plate (22,32) is formed on the upper surface of the support (10). The method of claim 1, Torque sensors (T) are provided on the first insulating plate (21) of the front end of the main generator (20) and the auxiliary generator (30), and the generators (20,30) are driven by the torque sensor (T). The power generated by each of the generators 20 and 30 is collected by the inverter 15 provided on the upper surface of the support 10 through the coils 221 and 321 of the second insulating plates 22 and 32. A generator having a generator. In the power generation method using a power generator having a multi-stage generator operated at a wind speed or a flow rate, A first step (S10) of rotating the blade (13) of one end of the shaft (12) into which the generator (20,30) to which the torque sensor (T) is attached is rotated by the wind speed or the flow rate; When the wind speed or flow rate supplied by the rotation of the blade 13 is supplied at the rated output speed of the main generator 20, the second generator for generating power while the main generator 20 is driven by the torque sensor (T) Step S20; A third step (S30) of generating power while the main generator 20 and the sub-generator 30 are driven by the torque sensor T when the wind speed or flow rate supplied from the blade 13 is supplied at a rated output speed or higher. )Wow; Power generation having a multi-stage generator, characterized in that it comprises a fourth step (S40) that the power produced by the main generator 20 and the auxiliary generator 30 is collected in the inverter 15 through the coils (221, 321). Power generation method using the device. The method of claim 3, wherein When the wind speed is supplied at 12.0 to 14.5 m / sec from the blade 13, torque is transmitted to the first shaft 12, and the main generator 20 is driven by the first torque sensor T ₁ . When the wind speed is supplied at 14.5 to 17.0 m / sec, torque is transmitted to the first and second shafts 12 and 12a so that the first torque sensor T _{1 is produced.} The main generator 20 is driven by the electric power of the rated output (1000KW) and the first auxiliary generator 30 is driven by the second torque sensor T ₂ to produce the additional output (100KW). When the wind speed is supplied at 17.0 to 19.5 m / sec, torque is transmitted to the first to third axes 12, 12a and 12b, and the main generator 20 is transmitted by the first torque sensor T ₁ . Is driven while the power of the rated output (1000KW) and the _{first and} second auxiliary generators (30,30a) are driven by the second and third torque sensors (T _{2 ,} T ₃ ) and additional output (100KW + 100KW = 200KW). To produce power, and the wind speed is supplied at 19.5 ~ 22.0m / sec. , No. 1-4 of the axial torque (Torque) to (12,12a, 12b, 12c) is passed first torque sensor rated output (1000KW) while driving a main generator (20) by (T ₁₎ power; The _first , _second and third auxiliary generators 30, 30a, and 30b are driven by the _second , _third and fourth torque sensors T ₂ , T ₃ , and T ₄ , and the additional output (100KW + 100KW + 100KW = 300KW) When the wind speed is supplied at 22.0 to 24.5m / sec, torque is transmitted to the first to fifth axes 12, 12a, 12b, 12c, and 12d, and the first torque sensor T _1. The main generator 20 is driven by the power of the rated output (1000KW) and the _second , _third , _fourth and _fifth torque sensors (T ₂ , T ₃ , T ₄ , T ₅ ). 3,4 auxiliary generators (30, 30a, 30b, 30c) is driven to generate power using an additional power generator (100KW + 100KW + 100KW + 100KW = 400KW) characterized in that the power generation unit having a multi-stage generator Way. The method of claim 3, wherein When the flow rate is supplied at 2.0 to 3.2 m / sec from the blade 13, torque is transmitted to the first shaft 12, and the main generator 20 is driven by the first torque sensor T ₁ . When the flow rate is supplied at 3.2 to 4.4 m / sec, torque is transmitted to the first and second shafts 12 and 12a so that the first torque sensor T _{1 is produced.} The main generator 20 is driven by the electric power of the rated output (1000KW) and the first auxiliary generator 30 is driven by the second torque sensor T ₂ to produce the additional output (100KW). When the flow rate is supplied at 4.4 to 5.6 m / sec, torque is transmitted to the first to third axes 12, 12a, and 12b, and the main generator 20 is transmitted by the first torque sensor T ₁ . Is driven while the power of the rated output (1000KW) and the _{first and} second auxiliary generators (30,30a) are driven by the second and third torque sensors (T _{2 ,} T ₃ ) and additional output (100KW + 100KW = 200KW). When the power is supplied at 5.6 ~ 6.8m / sec, the first ~ Torque is transmitted to the four shafts 12, 12a, 12b, and 12c, and the main generator 20 is driven by the first torque sensor T _{1 while} the power of the rated output (1000KW) and the second and the third motors are driven. The _first , _second and third auxiliary generators 30, 30a and 30b are driven by the four torque sensors T ₂ , T ₃ and T ₄ to produce additional output (100KW + 100KW + 100KW = 300KW). When the flow rate is supplied at 6.8 to 8.0 m / sec, torque is transmitted to the first to fifth axes 12, 12a, 12b, 12c, and 12d, and the main torque is transmitted by the first torque sensor T ₁ . The generator 20 is driven and the _first , _second , _third and _fourth subsidiary by the power of the rated output (1000KW) and the _second , _third , _fourth and _fifth torque sensors T ₂ , T ₃ , T ₄ and T ₅ . Power generation method using a power generation device having a multi-stage generator, characterized in that the generator (30, 30a, 30b, 30c) is driven to produce additional power (100KW + 100KW + 100KW + 100KW = 400KW).

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