Saving energy power generation method and system of them

Abstract

To provide a saving energy power generation method and a system of them.SOLUTION: A saving energy power generation method includes: a step 1 of comprising a first electric machine device that is operated as a motor or a motor generator, a second electric machine device that is operated as the motor or a power generator, and a fly wheel, and separately coupling the fly wheel in the first electric machine device and the second electric machine device; a step 2 of driving the fly wheel by operating the first and second electric machine devices as the motor; and a step 3 of operating the first electric machine device as the motor or the motor generator when the fly wheel is reached to a predetermined rotational speed, and operating the second electric machine device as the power generator. A saving energy power generation system executes a saving energy power generation method.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a power generation method and facility, and more particularly to an energy-saving power generation method and a system for carrying out the same. [Background technology]

[0002] The low power consumption power generating device disclosed in Patent Document 1 includes an operation module, a first motor, and a second motor. When the low power consumption power generating device is in operation, the first motor is driven by the input current within a short period of time and simultaneously rotates the transmission mechanism of the operation module. As the transmission rotates, it rotates the flywheel of the operational module. The flywheel has a generator rotor on its annular outer circumferential surface, and the main body of the operating module has a generator stator on its inner circumferential surface corresponding to the generator rotor. The transmission mechanism of the operation module continues to rotate the second motor until the flywheel reaches a predetermined rotation speed. When the flywheel reaches a predetermined rotation speed, a low current is input to the second motor to maintain rotation and at the same time generate electrical energy in the generator rotor of the flywheel, thereby achieving the effect of power generation with low power consumption. However, Patent Document 1 has the following drawbacks. First, it requires the installation of two motors, each with a single purpose, first, the amount of electrical energy saved by driving the flywheel with a single motor is limited, and first, it requires the arrangement of a set of transmissions to operate. Another drawback is that the generator rotor is disposed on the flywheel, which not only complicates the structure but also increases the electrical energy consumed to operate the flywheel. Another problem is that only a single power generation mechanism can be installed, limiting the scale of power supply. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Patent No. 10,122,240 Summary of the Invention [Problem to be solved by the invention]

[0004] A main object of the present invention is to provide an energy-saving power generation method capable of supplying a relatively large amount of power to the outside with a considerably small amount of power consumption.

[0005] Another object of the present invention is to provide a system for implementing the energy-saving power generation method. [Means for solving the problem]

[0006] In order to solve the above problems, the energy-saving power generation method includes the following steps. Step 1 is to provide a first electric machine. The first electric machine has a first operating mode or a second operating mode. The first operating mode is where the first electric machine operates as a motor. The second operating mode is where the first electric machine operates as a motor or a motor-generator. Step 2 is providing a second electromechanical device. The second electromechanical device has a third operating mode or a fourth operating mode. The third operating mode is where the second electromechanical device operates as a motor. The fourth operating mode is where the second electromechanical device operates as a generator. Step 3 is to prepare a first flywheel, which is separately connected to the first electromechanical device and the second electromechanical device and is operated by the driving force of the first electromechanical device and the second electromechanical device. Step 4 is to operate the first flywheel from a stationary state in a first control mode, the first control mode being a manner of operating the first electromechanical device in the first operating mode or in a second operating mode operating as a motor, and operating the second electromechanical device in a third operating mode. Step 5 is to maintain the first flywheel at a predetermined rotational speed in a second control mode, the second control mode being a manner in which the first electric machine operates in the first operating mode or in a second operating mode operating as a motor-generator, and the second electric machine operates in a fourth operating mode.

[0007] The energy-saving power generation method further includes the following steps. Step 6 is providing a third electromechanical device. The third electromechanical device has a fifth or sixth operating mode. The fifth operating mode is where the third electromechanical device operates as a motor. The sixth operating mode is where the third electromechanical device operates as a generator. Step 7 is to prepare a second flywheel, which is separately connected to the first electromechanical device and the third electromechanical device and is operated by the driving force of the first electromechanical device and the third electromechanical device. Step 8 is to operate the second flywheel from a stationary state in a third control mode, the third control mode being a manner of operating the first electromechanical device in the first operating mode or in the second operating mode operating as a motor, and operating the third electromechanical device in a fifth operating mode. Step 9 is to maintain the second flywheel at a predetermined rotational speed in a fourth control mode, the fourth control mode being a manner in which the first electric machine operates in the first operating mode or in the second operating mode operating as a motor-generator, and the third electric machine operates in a fourth operating mode.

[0008] In order to solve the above-mentioned problems, the energy-saving power generation system includes a first electric machine, a second electric machine, a first flywheel, and a first control mechanism. The first electric machine has a first operation mode or a second operation mode. The first operation mode is a mode in which the first electric machine operates as a motor. The second operation mode is a mode in which the first electric machine operates as a motor or a motor-generator. The second electric machine has a third operation mode or a fourth operation mode. The third operation mode is a mode in which the second electric machine operates as a motor. The fourth operation mode is a mode in which the second electric machine operates as a generator. The first flywheel is separately connected to the first electric machine and the second electric machine, and is operated by the driving force of the first electric machine and the second electric machine. The first control mechanism has a first control mode and a second control mode. When the first flywheel operates from a stationary state, the first control mode operates the first electric machine in the first operation mode or the second operation mode in which it operates as a motor, and operates the second electric machine in the third operation mode to drive the first flywheel. When the first flywheel reaches a predetermined rotational speed, the second control mode operates the first electric mechanical device in either the first operating mode or a second operating mode operating as a motor-generator, and operates the second electric mechanical device in a fourth operating mode.

[0009] In the energy-saving power generation system, the first electromechanical device comprises a motor. The first electromechanical device operates in a first operating mode.

[0010] In the energy-saving power generation system, the second electric machine is a three-phase magneto motor with a rated output. In detail, the second electric machine includes a second stator body, a second stator winding distributed on the second stator body, a second rotor, and a plurality of permanent magnets distributed on the second rotor.

[0011] In the energy-saving power generation system, the first control mechanism further includes a first circuit control device, a first frequency converter, and a three-phase first changeover switch. The first circuit control device is electrically connected to the three-phase first changeover switch and controls the opening and closing of the three-phase first changeover switch. The first frequency converter has a three-phase input terminal electrically connected to an external power source and a three-phase output terminal electrically connected to an input terminal of the three-phase first changeover switch. The three-phase first changeover switch has an output terminal electrically connected to an input terminal of a second stator winding of the second electric machine device. When the first circuit control device turns the three-phase first changeover switch ON, the second electric machine device is driven by the first frequency converter and operates as a motor, i.e., operates in a third operation mode. When the first circuit control device turns the three-phase first changeover switch OFF, the second electric machine device is driven by the first electric machine device and operates as a generator, i.e., operates in a fourth operation mode.

[0012] In the energy-saving power generation system, the first electric machine has a first stator and a first rotor. The first stator has a first stator body and a three-phase first stator winding housed in the first stator body. The three-phase first stator winding has a first coil and a second coil. Each of the first coil and the second coil has the same number of magnetic poles. Each of the first coils displays a first rated output power. Each of the second coils displays a second rated output power. The first rated output power is greater than or equal to the second rated output power. The first rotor has a first rotor body with a fixed number of magnetic poles and a first rotating shaft. The first rotor body is housed in the first stator body and rotates toward the first rotor. A first flywheel is connected to the first rotating shaft.

[0013] In the energy-saving power generation system, the second coil of the three-phase first stator winding of the first electric machine is electrically connected to an external power source. The energy-saving power generation system further includes a second control mechanism. The second control mechanism includes a second circuit control device, a first frequency converter, a three-phase first changeover switch, and a three-phase second changeover switch. The second circuit control device is electrically connected to the first frequency converter and the three-phase second changeover switch. The first frequency converter has a three-phase input terminal electrically connected to the external power source and a three-phase output terminal electrically connected to an input terminal of the three-phase first changeover switch. The three-phase first changeover switch has an output terminal electrically connected to an input terminal of the second stator winding of the second electric machine. The second circuit control device is electrically connected to the three-phase second changeover switch. The output terminal of the three-phase second changeover switch is electrically connected to the first coil of each phase. The input terminal of the three-phase second changeover switch is electrically connected to the external power source. When the first flywheel is operated from a stationary state, the second control mechanism connects the first coil and the second coil to the external power source in a third control mode. At this time, the first electric machine operates in a second operation mode in which it operates as a motor. The second circuit control device controls the three-phase first changeover switch to connect the second stator winding of the second electric machine to an external power source via the first frequency converter. In other words, the first electric machine operates in a second operation mode in which it operates as a motor. The second electric machine operates in a third operation mode. The first electric machine and the second electric machine jointly drive the first flywheel. When the first flywheel reaches a predetermined rotation speed, i.e., when the flywheel effect reaches a critical point, the second control mechanism cuts off the power supply to the first coil of each phase by turning off the three-phase second changeover switch via the second circuit control device in a fourth control mode, and connects the second coil of each phase to an external power source. At this time, the first electric machine operates in a second operation mode in which it operates as a motor generator, and generates power by maintaining the flywheel effect of the first flywheel, and at the same time, causes the first coil of each phase to output power to the outside by the flywheel effect of the first flywheel. When the second circuit control device turns off the three-phase first changeover switch, the second electric machine operates in a fourth operation mode.

[0014] To sum up, in the energy-saving power generation system, the first flywheel is driven by the first electric machine and the second electric machine together, so that the flywheel effect can be quickly generated while saving energy. After the first flywheel generates the flywheel effect, the first electric machine uses a small amount of power to make the first flywheel maintain the flywheel effect. At the same time, the first electric machine and the second electric machine supply power to the outside through the flywheel effect of the first flywheel. With the above-mentioned technical features, the energy-saving power generation system can generate power while saving energy.

[0015] The energy-saving power generation system further includes a first base having a first horizontal base surface, a second horizontal base surface, and a first recessed portion located between the first and second horizontal base surfaces. The first electric machine is secured to the first horizontal base surface. The second electric machine is secured to the second horizontal base surface. The first flywheel is partially suspended within the first recessed portion.

[0016] The energy-saving power generation system further includes a third electric machine, a second flywheel, and a third control mechanism. The third electric machine has a fifth or sixth operation mode. The fifth operation mode is a mode in which the third electric machine operates as a motor. The sixth operation mode is a mode in which the third electric machine operates as a generator. The second flywheel is separately connected to the first and third electric machines and operates by the driving forces of the first and third electric machines. The third control mechanism has a fifth and sixth control mode in addition to the first and second control modes of the first control mechanism. When the second flywheel operates from a stationary state, the fifth control mode operates the first electric machine in the first operation mode or the second operation mode operating as a motor, and operates the third electric machine in the fifth operation mode to drive the second flywheel. When the second flywheel reaches a predetermined rotation speed and generates a flywheel effect, the sixth control mode operates the first electric machine in the first operation mode or the second operation mode operating as a motor-generator, and operates the third electric machine in the sixth operation mode. To summarize the above, the energy-saving power generation system uses the first electric mechanical device to maintain the flywheel effect of the first flywheel and the second flywheel, and at the same time drives the second electric mechanical device and the third electric mechanical device as generators through the flywheel effect, which makes the effect of generating power while saving energy even more apparent. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a schematic diagram showing steps of a first embodiment of the energy-saving power generation method of the present invention. [Diagram 2] FIG. 4 is a schematic diagram showing steps of a second embodiment of the energy-saving power generation method of the present invention. [Diagram 3] 1 is a side view showing a first embodiment of an energy-saving power generation system of the present invention. [Figure 4] FIG. 2 is a perspective view showing a portion of a second electromechanical device corresponding to FIG. 1; [Diagram 5] FIG. 4 is a schematic diagram showing electrical connections corresponding to FIG. 3. [Figure 6] FIG. 4 is a side view showing a second embodiment of the energy-saving power generation system of the present invention. [Figure 7] FIG. 7 is a perspective view showing a portion of the first electromechanical device corresponding to FIG. 6; [Figure 8] 8 is a cross-sectional view taken along line 8-8 in FIG. 7. [Figure 9] 7 is a schematic diagram corresponding to FIG. 6 and showing a method of electrically connecting the stator windings of the first electric machine device and the circuit control device. [Figure 10] FIG. 7 is a schematic diagram showing electrical connections corresponding to FIG. 6. [Figure 11] FIG. 4 is a side view showing a third embodiment of the energy-saving power generation system of the present invention. [Figure 12] FIG. 11 is a side view showing a fourth embodiment of the energy-saving power generation system of the present invention. [Figure 13] FIG. 13 is a schematic diagram showing electrical connections corresponding to FIG. 12. [Figure 14] FIG. 11 is a side view showing a fifth embodiment of the energy-saving power generation system of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an energy-saving power generation method and system thereof according to the present invention will be described with reference to the drawings.

[0019] Referring to Figure 1, a first embodiment of the energy-saving power generation method of the present invention includes the following steps.

[0020] Step 1 is to provide a first electric machine. The first electric machine has a first operating mode or a second operating mode. The first operating mode is where the first electric machine operates as a motor. The second operating mode is where the first electric machine operates as a motor or a motor-generator.

[0021] Step 2 is providing a second electromechanical device. The second electromechanical device has a third operating mode or a fourth operating mode. The third operating mode is where the second electromechanical device operates as a motor. The fourth operating mode is where the second electromechanical device operates as a generator.

[0022] Step 3 is to prepare a first flywheel, which is separately connected to the first electromechanical device and the second electromechanical device and is operated by the driving force of the first electromechanical device and the second electromechanical device.

[0023] Step 4 is to operate the first flywheel from a stationary state in a first control mode, the first control mode being a manner of operating the first electromechanical device in the first operating mode or in a second operating mode operating as a motor, and operating the second electromechanical device in a third operating mode.

[0024] Step 5 is to maintain the first flywheel at a predetermined rotational speed in a second control mode, the second control mode being a manner in which the first electric machine operates in the first operating mode or in a second operating mode operating as a motor-generator, and the second electric machine operates in a fourth operating mode.

[0025] 2, the second embodiment of the energy-saving power generation method of the present invention further includes the following steps in addition to the steps of the first embodiment.

[0026] Step 6 is providing a third electromechanical device. The third electromechanical device has a fifth or sixth operating mode. The fifth operating mode is where the third electromechanical device operates as a motor. The sixth operating mode is where the third electromechanical device operates as a generator.

[0027] Step 7 is to prepare a second flywheel, which is separately connected to the first electromechanical device and the third electromechanical device and is operated by the driving force of the first electromechanical device and the third electromechanical device.

[0028] Step 8 is to operate the second flywheel from a stationary state in a third control mode, the third control mode being a manner of operating the first electromechanical device in the first operating mode or in the second operating mode operating as a motor, and operating the third electromechanical device in a fifth operating mode.

[0029] Step 9 is to maintain the second flywheel at a predetermined rotational speed in a fourth control mode, the fourth control mode being a manner in which the first electric machine operates in the first operating mode or in the second operating mode operating as a motor-generator, and the third electric machine operates in a sixth operating mode.

[0030] (First embodiment) 3 to 5, an energy-saving power generation system 10 according to a first embodiment of the present invention includes a first electromechanical device 20, a second electromechanical device 30, a first control mechanism 40, a first flywheel 50 and a first base 60.

[0031] In this embodiment, the first electric machine device 20 is composed of a three-phase induction motor or synchronous motor with four poles and a rated output power of 30 HP, and operates in a first operating mode.

[0032] In this embodiment, the second electric machine device 30 is composed of a three-phase magnet motor generator with a rated output power of 50 HP, and has a second stator body 32, a second stator winding 34 distributed in the second stator body 32, a second rotor 36, and a plurality of permanent magnets 38 distributed on the surface of the second rotor 36, as shown in FIG.

[0033] The first control mechanism 40 operates in a first control mode or a second control mode, and includes a first circuit control device 41, a driver 42, a first frequency converter 44, and a first three-phase changeover switch 46 as shown in FIG. The first circuit control device 41 is a PLC (programmable logic controller). The three-phase first changeover switch 46 is a relay, an electromagnetic switch or a similar device. By wiring, the first circuit control device 41 is electrically connected to the three-phase first changeover switch 46 and controls the opening and closing of the three-phase first changeover switch 46 . The first frequency converter 44 is composed of a well-known frequency converter (variable-frequency drive or inverter), with an input terminal electrically connected to an external power supply and an output terminal electrically connected to the input terminal of the three-phase first changeover switch 46. The output terminal of the three-phase first changeover switch 46 is electrically connected to the input terminal of the second stator winding 34 of the second electric machine device 30 . When the first circuit control device 40 turns on the three-phase first changeover switch 46, the second electromechanical device 30 is driven by the first frequency converter 44 and operates as a motor, that is, operates in the third operating mode. When the first circuit control device 41 turns off the first three-phase changeover switch 46, the second electric machine device 30 is driven by the first flywheel 50 and operates as a generator, that is, operates in the fourth operation mode.

[0034] Referring to Figure 3, the first flywheel 50 has a first circular body 52 of constant mass and a shaft 54. One end of the shaft 54 ​​is connected to the rotation axis of the first rotor 26 of the first electric machine device 20 so that the first flywheel 50 can be operated by the driving force of the first rotor 26 . The other end of the shaft 54 ​​is connected to the rotation axis of the second rotor 36 of the second electric machine device 30 so that the first flywheel 50 can be operated by the driving force of the second rotor 36 .

[0035] The first pedestal 60 has a first horizontal platform surface 62 , a second horizontal platform surface 64 , and a first recessed portion 66 located between the first and second horizontal platforms 62 , 64 . The first electromechanical device 20 is fixed to a first horizontal surface 62. The second electromechanical device 30 is fixed to a second horizontal surface 64. The first circular body 52 of the first flywheel 50 is stored so that a portion of the first circular body 52 hangs down within the first recessed portion 66 .

[0036] The operation of the energy-saving power generation system 10 will be described below.

[0037] When starting the stationary first flywheel 50, the first control mechanism 40 operates in the first control mode. In response to this, the first circuit control device 41 operates the first electric machine device 20 in a first operating mode using the driver 42, and at the same time connects the second stator winding 34 of the second electric machine device 30 to an external power source via the first frequency converter 44 using the three-phase second changeover switch 46. The second electromechanical device 30 operates as a motor and drives the first flywheel 50 together with the first electromechanical device 20 .

[0038] When the first flywheel 50 reaches a predetermined rotation speed, i.e., when the flywheel effect reaches a critical point, the first control mechanism 40 operates in the second control mode. In response, the first circuit control device 41 cuts off the electrical connection between the second electromechanical device 30 and the first frequency converter 44 . The first electric machine 20 operates continuously in the first operating mode to make the first flywheel 50 maintain the flywheel effect. The second electric machine device 30 functions as a generator and outputs electric power to the outside from the output end 38 by the flywheel effect of the first flywheel 50 .

[0039] (Formula 1) E1=0.745KW×5=3.73KW (Formula 2) E2=50HP×75%=0.745KW×50×75%=27.9KW

[0040] In the energy-saving power generation system 10, when the first flywheel 50 is driven from a stationary state and reaches a state where it maintains the flywheel effect, the power E1 consumed jointly by the first electromechanical device 20 and the second electromechanical device 30 is 5 HP, that is, expressed by Equation 1. The power E2 generated by the second electromechanical device 30 is 75% of the rated power efficiency, that is, expressed by Equation 2. In other words, the energy-saving power generation system 10 according to the first embodiment generates eight times the amount of power it consumes.

[0041] Second embodiment 6 to 10 are schematic diagrams showing an energy-saving power generation system 10' according to a second embodiment of the present invention. The differences from the energy-saving power generation system 10 are as follows.

[0042] The energy saving power generation system 10' includes a first electromechanical device 20'. In this embodiment, the first electromechanical device 20' is a three-phase, four-pole motor with a rated output power of 30 HP, but is not limited thereto. Referring to Figures 7 and 8, a first electric machine 20' has a first stator body 22', a first stator winding 24' and a first rotor 26'. The first stator body 22' is constructed from a plurality of overlapping annular silicon steel plates and has a plurality of stator grooves 224'. A plurality of stator grooves 224' extend along the inner peripheral surface 220' of the first stator body 22' to a predetermined depth toward the outer peripheral surface 222' and are spaced apart from one another at regular intervals.

[0043] Description will be given with reference to Fig. 7. In this embodiment, the first stator winding 24', ie, the three-phase winding, is made up of an R-phase coil 240', an S-phase coil 242', and a T-phase coil 244'. The phase coils are electrically connected in a wye or triangle configuration. R-phase coil 240' has an R-phase first coil 2400' and an R-phase second coil 2402'. S-phase coil 242' includes an S-phase first coil 2420' and an S-phase second coil 2422'. T-phase coil 244' has a T-phase first coil 2440' and a T-phase second coil 2442'. Each phase coil has the same structure, i.e., the same rated output power and the same number of magnetic poles. In this embodiment, the R-phase first coil 2400', the S-phase first coil 2420', and the T-phase first coil 2440', and the R-phase second coil 2402', the S-phase second coil 2422', and the T-phase second coil 2442' have a rated output power of 15 HP and four magnetic poles, but are not limited to this. An R-phase first coil 2400', an S-phase first coil 2420' and a T-phase first coil 2440' are separately distributed in a first portion 2240' of a stator slot 224'. R-phase second coil 2402', S-phase second coil 2422' and T-phase second coil 2442' are separately distributed in second portion 2242' of stator slot 224'.

[0044] The energy-saving power generation system 10 ′ further includes a second control mechanism 43 . For ease of explanation, like parts of the second control mechanism 43 and the first control mechanism 40 are designated by like reference numerals. 9 and 10, the second control mechanism 43 has a second circuit control device 45, a first frequency converter 44, a three-phase first changeover switch 46, and a three-phase second changeover switch 48. The three-phase second changeover switch 48 is a relay, an electromagnetic switch or a similar device. The method of electrically connecting the second circuit control device 45, the first frequency converter 44, and the first three-phase changeover switch 46 by wiring is the same as that of the first circuit control device 41, so a description thereof will be omitted. The second circuit control device 45 is electrically connected to the three-phase second changeover switch 48 and controls the opening and closing of the second changeover switch 48 . An output end of the three-phase second changeover switch 48 is electrically connected to an R-phase first coil 2400', an S-phase first coil 2420', and a T-phase first coil 2440'. The input terminals of the three-phase second changeover switch 48 are electrically connected to the external power source 12 via lines A, B, and C. The R-phase second coil 2402', the S-phase second coil 2422' and the T-phase second coil 2442' are electrically connected to the external power source 12 via lines D, E and F. When operating the first electric mechanical device 20', the second circuit control device 45 connects the R-phase first coil 2400', the S-phase first coil 2420' and the T-phase first coil 2440' to the external power source 12 by turning on the three-phase second changeover switch 48. At this time, the R-phase first coil 2400', the S-phase first coil 2420', and the T-phase first coil 2440', and the R-phase second coil 2402', the S-phase second coil 2422', and the T-phase second coil 2442' are simultaneously electrically connected to the external power supply 12. The second circuit control device 45 also controls the first three-phase changeover switch 46 to connect the second stator winding 34 of the second electric machine device 30 to the external power source 12 via the first frequency converter 44 . In other words, the first electromechanical device 20' operates in the second operating mode in which it acts as a motor. The second electromechanical device 30 operates in a third operating mode. The first electromechanical device 20 ′ and the second electromechanical device 30 collectively drive a first flywheel 50 . The first electromechanical device 20' has an output power of 30 HP, ie, the sum of the rated output power of the first coil of 15 HP and the rated output power of the second coil of 15 HP. When the first flywheel 50 reaches a predetermined rotational speed, i.e., when the flywheel effect reaches a critical point, the second circuit control device 45 turns off the three-phase second changeover switch 48 to cut off the power supply to the R-phase first coil 2400', the S-phase first coil 2420', and the T-phase first coil 2440', while maintaining the electrical connection between the R-phase second coil 2402', the S-phase second coil 2422', and the T-phase second coil 2442' and the external power source 12. At this time, the first electric machine 20' operates in a second operating mode in which it functions as a motor-generator, and generates power by maintaining the flywheel effect of the first flywheel 50. At the same time, the R-phase first coil 2400', the S-phase first coil 2420' and the T-phase first coil 2440' of the first electric machine device 20' output electric power from the output end 28' to the outside due to the flywheel effect of the first flywheel 50. When the second circuit control device 45 turns off the first three-phase changeover switch 46, the second electric machine device 30 operates in the fourth operation mode.

[0045] To summarize the above, in the energy-saving power generation system 10', the first flywheel 50 is jointly driven by the first electric mechanical device 20' and the second electric mechanical device 30, so that the flywheel effect can be quickly generated while saving energy. After the first flywheel 50 generates the flywheel effect, the first electromechanical device 20' uses a small amount of power to make the first flywheel 50 maintain the flywheel effect. At the same time, the first electromechanical device 20 ′ and the second electromechanical device 30 supply electric power to the outside by the flywheel effect of the first flywheel 50 . Due to the above-mentioned technical features, the energy-saving power generation system 10' can generate power while saving energy.

[0046] (Formula 3) E1=0.745KW×5=3.73KW (Formula 4) E2=(50HP+15HP)×75%=0.745KW×65×75%=36.32KW

[0047] In the energy-saving power generation system 10', when the first flywheel 50 is driven from a stationary state and reaches a state where it maintains the flywheel effect, the power E1 consumed jointly by the first electromechanical device 20' and the second electromechanical device 30 is 5 HP, that is, expressed by Equation 3. The first electromechanical device 20' and the second electromechanical device 30 each generate power at 75% of their rated power efficiency. The total power E2 is expressed by Equation 4. That is, the energy-saving power generation system 10' according to the second embodiment generates 10 times the power it consumes.

[0048] Third embodiment FIG. 11 is a side view showing an energy-saving power generation system 100 according to the third embodiment of the present invention. The difference between the energy-saving power generation system 100 and the energy-saving power generation system 10 is in the second base 102 . The second pedestal 102 has an inclined surface 104 . The included angle θ between the ramp surface 104 and the horizontal plane is between 25° and 45°. In this embodiment, the included angle θ is 30°. The ramp surface 104 has a first fastening portion 106 , a second fastening portion 108 and a second recessed region 110 . The first electromechanical device 20 is fixed to a first fixing portion 106. The second electromechanical device 30 is fixed to a second fixing portion 108. The first circular body 52 of the first flywheel 50 is partially suspended within the second recessed portion 110 . The above-mentioned structural features make it possible to reduce the gravity of the first flywheel 50.

[0049] (Fourth embodiment) As shown in Figures 12 and 13, the energy-saving power generation system 300 according to the fourth embodiment of the present invention includes a third electric mechanical device 302, a second flywheel 304, a third base 306 and a third control mechanism 308 in addition to the first electric mechanical device 20, the second electric mechanical device 30 and the first flywheel 50 of the energy-saving power generation system 10.

[0050] In this embodiment, the third electric machine 302 and the second electric machine 30 are both three-phase magneto motor generators with a rated output power of 50 HP. For ease of explanation, the same components of the third control mechanism 308 and the first control mechanism 40 are denoted by the same reference numerals. The following description will be given with reference to FIG. The third control mechanism 308 includes a third circuit control device 47, a driver 42, a first frequency converter 44, a first electric mechanical device 20, and a three-phase first changeover switch 46 that controls the operation of the first electric mechanical device 20, as well as a second frequency converter 310 and a three-phase third changeover switch 312. The second frequency converter 310 has three-phase input terminals electrically connected to the external power source 12 , and a three-phase output terminal electrically connected to an input terminal of a three-phase third changeover switch 312 . The output terminal of the three-phase third changeover switch 312 is electrically connected to the input terminal of the third stator winding 314 of the third electric machine device 302 . When the third circuit control device 47 turns on the three-phase third changeover switch 312, the third electromechanical device 302 is driven by the second frequency converter 310 and operates as a motor, that is, operates in the fifth operating mode. When the third circuit control device 47 turns off the three-phase third changeover switch 312, the third electric machine device 302 operates as a generator using external power and supplies power to the outside from the output terminal 316, that is, operates in the sixth operating mode.

[0051] The second flywheel 304 is of similar construction to the first flywheel 50 and includes a second circular body 318 of constant mass and a second shaft 320 . One end of the second shaft 320 is connected to the rotation axis of the first rotor 26 of the first electric machine device 20 so that the second flywheel 304 can be operated by the driving force of the first rotor 26 . The other end of the second shaft 320 is connected to the rotation axis of a third rotor 322 of the third electric machine device 302 so that the second flywheel 304 can be operated by the driving force of the third rotor 322 .

[0052] The third base 306 has a third horizontal table surface 323, a fourth horizontal table surface 324, a fifth horizontal table surface 326, a third recessed portion 328 located between the third horizontal table surface 323 and the fourth horizontal table surface 324, and a fourth recessed portion 330 located between the fourth horizontal table surface 324 and the fifth horizontal table surface 326. The first electromechanical device 20 is fixed to the fourth horizontal surface 324 . The second electromechanical device 30 is fixed to the third horizontal surface 323. The third electromechanical device 302 is fixed to the fifth horizontal surface 326. The first circular body 52 of the first flywheel 50 is partially received within the third recessed region 328. The second circular body 318 of the second flywheel 304 is partially received within the fourth recessed region 330.

[0053] The method of controlling the first electromechanical device 20 and the third electromechanical device 302 by the third control mechanism 308 is the same as the method of controlling the first electromechanical device 20 and the second electromechanical device 30 by the first control mechanism 40, so a description thereof will be omitted.

[0054] To summarise the above, in the energy-saving power generation system 300, the first electromechanical device 20, the second electromechanical device 30 and the third electromechanical device 302 jointly drive the first flywheel 50 and the second flywheel 304 to produce a flywheel effect. The first flywheel 50 and the second flywheel 304 are rotated by the first electromechanical device 20 while maintaining the flywheel effect. The second electromechanical device 30 and the third electromechanical device 302 operate as generators and supply large amounts of electric power to the outside.

[0055] Fifth embodiment FIG. 14 is a side view showing an energy-saving power generation system 400 according to a fifth embodiment of the present invention. The difference between the energy-saving power generation system 400 and the energy-saving power generation system 300 is in the fourth base 402 . The fourth pedestal 402 has an inclined bed surface 404. The included angle θ between the inclined bed surface 404 and the horizontal plane is between 25° and 45°. In this embodiment, the included angle θ is 30°. [Explanation of symbols]

[0056] 10, 10', 100, 300, 400: Energy-saving power generation system 102:Second pedestal 104: Slope surface 106:First fixed part 108:Second fixed part 110: Second depression 12: External power supply 20, 20': First electromechanical device 22': First stator body 220': Inner surface 222': Outer surface 224': Stator groove 2240':First part 2242':Second part 24': First stator winding 240': R phase coil 2400': R phase first coil 2402': R-phase second coil 242': S phase coil 2420': S phase first coil 2422': S-phase second coil 244': T-phase coil 2440': T-phase first coil 2442': T-phase second coil 26': First rotor 28': Output terminal 30: Second electromechanical device 302: Third electromechanical device 304: Second flywheel 306: Third pedestal 308:Third control mechanism 310: Third frequency converter 312: Three-phase third changeover switch 318: Second circular body 32:Second stator body 320: Second shaft 322: Third rotor 323: Third horizontal platform 324:Fourth horizontal platform 326:Fifth horizontal platform 328: Third depression 330: The fourth depression 34: Second stator winding 36: Second rotor 38: Permanent magnet 40: First control mechanism 41: First circuit control device 42: Driver 43: Second control mechanism 44: First frequency converter 45: Second circuit control device 46: Three-phase first changeover switch 47: Third circuit control device 48: Three-phase second changeover switch 50: First flywheel 52: First circular body 54: Shaft 60:First pedestal 62: First horizontal platform 64:Second horizontal platform 66: First depression 402:Fourth pedestal 404: Slope surface θ: included angle

Claims

1. The method includes the steps of: Step 1 is providing a first electric machine having a first operating mode or a second operating mode, the first operating mode being such that the first electric machine operates as a motor, and the second operating mode being such that the first electric machine operates as a motor or a motor-generator; Step 2 is providing a second electromechanical device having a third operating mode and a fourth operating mode, the third operating mode being such that the second electromechanical device operates as a motor and the fourth operating mode being such that the second electromechanical device operates as a generator; Step 3 is to separately couple a first flywheel to the first electromechanical device and the second electromechanical device, and drive the first flywheel by the first electromechanical device and the second electromechanical device; Step 4 is to operate the first flywheel from a stationary state in a first control mode, the first control mode being a manner of operating the first electromechanical device in the first operating mode or in the second operating mode operating as a motor, and operating the second electromechanical device in the third operating mode; Step 5 is to maintain a predetermined rotational speed of the first flywheel in a second control mode, the second control mode being a system in which the first electric mechanical device is operated in the first operating mode or in the second operating mode operating as a motor-generator, and the second electric mechanical device is operated in the fourth operating mode.

2. It further includes the steps of: Step 6 is providing a third electromechanical device having a fifth operating mode or a sixth operating mode, the fifth operating mode being such that the third electromechanical device operates as a motor and the sixth operating mode being such that the third electromechanical device operates as a generator; Step 7 is to separately couple a second flywheel to the first electromechanical device and the third electromechanical device, and drive the second flywheel by the first electromechanical device and the third electromechanical device; Step 8 is to operate the second flywheel from a stationary state in a third control mode, the third control mode being a manner of operating the first electromechanical device in the first operating mode or in the second operating mode operating as a motor, and operating the third electromechanical device in the fifth operating mode; The energy-saving power generation method of claim 1, characterized in that step 9 is to maintain a predetermined rotational speed of the second flywheel in a fourth control mode, the fourth control mode being a system in which the first electric mechanical device is operated in the first operating mode or the second operating mode operating as a motor-generator, and the third electric mechanical device is operated in the sixth operating mode.

3. a first electromechanical device, a second electromechanical device, a first flywheel, and a first control mechanism; the first electric machine has a first operating mode or a second operating mode, the first operating mode being a mode in which the first electric machine operates as a motor, and the second operating mode being a mode in which the first electric machine operates as a motor or a motor-generator; the second electric machine has a third operating mode or a fourth operating mode, the third operating mode being a manner in which the second electric machine operates as a motor, and the fourth operating mode being a manner in which the second electric machine operates as a generator; the first flywheel is separately connected to the first electric mechanical device and the second electric mechanical device and is operated by the driving force of the first electric mechanical device and the second electric mechanical device; the first control mechanism has a first control mode and a second control mode; When the first flywheel is actuated from a stationary state, the first control mode operates the first electromechanical device in the first operating mode or in the second operating mode operating as a motor, and operates the second electromechanical device in the third operating mode to drive the first flywheel; An energy-saving power generation system characterized in that, when the first flywheel reaches a predetermined rotational speed, the second control mode operates the first electric mechanical device in the first operating mode or in the second operating mode operating as a motor-generator, and operates the second electric mechanical device in the fourth operating mode.

4. 4. The energy-saving power generation system of claim 3, wherein the first electromechanical device comprises a motor.

5. 5. The energy-saving power generation system of claim 4, wherein the second electromechanical device comprises a motor-generator.

6. the second electric machine has a second stator and a second rotor, the second stator having a second stator body and a second stator winding distributed on the second stator body, the second rotor having a second rotor body and a plurality of permanent magnets distributed on the second rotor body; When the first flywheel rotates from a stationary state, the second electromechanical device is controlled in the first control mode and operates as a motor; The energy-saving power generation system according to claim 5, characterized in that, when the first flywheel maintains a predetermined rotational speed, the second electric machine is controlled in a second control mode and operates as a generator.

7. the first control mechanism has a first circuit control device, a first frequency converter, and a three-phase first changeover switch, the first circuit control device is electrically connected to the three-phase first changeover switch and controls opening and closing of the three-phase first changeover switch, the first frequency converter is electrically connected to an external power source, and is simultaneously electrically connected to the second stator winding of the second electric machine device via the three-phase first changeover switch, When the first circuit control device turns on the three-phase first changeover switch, the second electric machine device is driven by the first frequency converter and operates as a motor, i.e., operates in the third operating mode; The energy-saving power generation system of claim 6, characterized in that when the first circuit control device turns off the three-phase first changeover switch, the second electric machine device is driven by the first flywheel and operates as a generator, i.e., operates in the fourth operating mode.

8. the first electrical machine having a first stator and a first rotor; the first stator has a first stator body and a three-phase first stator winding housed in the first stator body, the first stator winding of each phase has a first coil and a second coil, the first coil exhibits a first pole number and a first rated output power, the second coil exhibits a second pole number and a second rated output power, the first pole number is the same as the second pole number, and the first rated output power is greater than or equal to the second rated output power; the first rotor has a rotation axis and displays a third number of magnetic poles, the third number of magnetic poles being the same as the first number of magnetic poles or the second number of magnetic poles; when the first coil and the second coil are simultaneously connected to an external power source, the first electromechanical device operates in the second operating mode as a motor; The energy-saving power generation system of claim 3, wherein when the second coil is connected to an external power source, the first electromechanical device operates in the second operating mode as a motor-generator.

9. the second electric machine has a second stator and a second rotor, the second stator having a second stator body and a second stator winding distributed on the second stator body, the second rotor having a second rotor body and a plurality of permanent magnets distributed on the second rotor body; When the first flywheel rotates from a stationary state, the second electromechanical device is controlled in the first control mode and operates as a motor; The energy-saving power generation system according to claim 8, characterized in that, when the first flywheel maintains a predetermined rotational speed, the second electric machine is controlled in a second control mode and operates as a generator.

10. the first control mechanism has a second circuit control device, a first frequency converter, a three-phase first changeover switch, and a three-phase second changeover switch, the second circuit control device is electrically connected to the three-phase first changeover switch and controls the opening and closing of the three-phase first changeover switch, the first frequency converter is electrically connected to an external power source and is simultaneously electrically connected to an input terminal of the second stator winding via the three-phase first changeover switch, the second circuit control device is electrically connected to the three-phase second changeover switch and controls the opening and closing of the three-phase second changeover switch, an input end of the three-phase second changeover switch is electrically connected to an external power source, and an output end of the three-phase second changeover switch is electrically connected to the first coil of each phase of the first electromechanical device, When the second circuit control device turns on the three-phase first changeover switch, the second electric machine device is driven by the first frequency converter and operates as a motor, i.e., operates in the third operating mode; When the second circuit control device turns off the three-phase first changeover switch, the second electric machine device is driven by the first flywheel and operates as a generator, i.e., operates in the fourth operation mode; When the second circuit control device turns on the three-phase second changeover switch, the first coil and the second coil of the first electric machine device are connected to an external power source via the three-phase second changeover switch, so that the first electric machine device operates in the second operation mode as a motor; The energy-saving power generation system of claim 9, characterized in that when the second circuit control device turns off the three-phase second changeover switch, only the second coil is connected to an external power source, so that the first electric machine device operates in the second operating mode in which it functions as a motor-generator.

11. It also has a first pedestal, the first base has a first horizontal surface, a second horizontal surface, and a first recessed portion located between the first surface and the second surface; the first electromechanical device is fixed to the first horizontal surface; the second electromechanical device is fixed to the second horizontal surface; 4. The energy-saving power generation system of claim 3, wherein the first flywheel is partially suspended within the first recess.

12. It also has a second pedestal, The second base has an inclined surface, and an included angle between the inclined surface and a horizontal plane is between 25° and 45°. The inclined surface has a first fixing portion, a second fixing portion and a second recessed portion. the first electromechanical device is fixed to a first fixing portion; the second electromechanical device is fixed to a second fixing portion; 4. The energy-saving power generation system of claim 3, wherein the first flywheel is partially suspended within the second recess.

13. a third electromechanical device and a second flywheel; the third electric machine has a fifth operating mode or a sixth operating mode, the fifth operating mode being a manner in which the third electric machine operates as a motor, and the sixth operating mode being a manner in which the third electric machine operates as a generator; the second flywheel is separately connected to the first electric mechanical device and the third electric mechanical device and is operated by the driving force of the first electric mechanical device and the third electric mechanical device; The first control mechanism further has a third control mode, When the second flywheel is actuated from a stationary state, the third control mode drives the second flywheel by operating the first electromechanical device in the first operating mode or the second operating mode operating as a motor, and operating the third electromechanical device in the fifth operating mode; The energy-saving power generation system described in claim 3, characterized in that when the second flywheel reaches a predetermined rotational speed, the third control mode outputs electric power to the outside by operating the first electric mechanical device in the first operating mode or the second operating mode in which it operates as a motor-generator, and operating the third electric mechanical device in a sixth operating mode.

14. the first electromechanical device includes a motor and a second motor-generator; 14. The energy saving power generation system of claim 13, wherein the second electromechanical device comprises a first motor-generator.

15. the second electric machine includes a first motor-generator; the first electric machine includes a second motor-generator; the first electrical machine having a first stator and a first rotor; the first stator has a first stator body and a three-phase first stator winding housed in the first stator body, the first stator winding of each phase has a first coil and a second coil, the first coil exhibits a first pole number and a first rated output power, the second coil exhibits a second pole number and a second rated output power, the first pole number is the same as the second pole number, and the first rated output power is greater than or equal to the second rated output power; the first rotor has a rotation axis and displays a third number of magnetic poles, the third number of magnetic poles being the same as the first number of magnetic poles or the second number of magnetic poles; when the first coil and the second coil of the first electromechanical device are simultaneously connected to an external power source, the first electromechanical device operates in the second operating mode as a motor; The energy-saving power generation system of claim 13, characterized in that when only the second coil of the first electric mechanical device is connected to an external power source, the first electric mechanical device operates in the second operating mode as a motor-generator.

16. the first control mechanism includes a third circuit control device, a driver, a first frequency converter, a three-phase first changeover switch, a second frequency converter, and a three-phase third changeover switch, the third circuit control device being electrically connected to the driver and controlling the operation of the driver; When the first electric mechanical device is electrically connected to an external power source via the driver, the third circuit control device operates the first electric mechanical device in the first operating mode; the third circuit control device is electrically connected to the three-phase first changeover switch and controls opening and closing of the three-phase first changeover switch, the first frequency converter is electrically connected to an external power source and is simultaneously electrically connected to the first motor-generator via the three-phase first changeover switch, the third circuit control device is electrically connected to the three-phase second changeover switch and controls opening and closing of the three-phase second changeover switch; the second frequency converter is electrically connected to an external power source and is simultaneously electrically connected to the second motor-generator via the three-phase second changeover switch; When the third circuit control device turns on the first three-phase changeover switch, the first motor-generator is driven by the first frequency converter and operates as a motor, i.e., operates in the third operating mode; When the third circuit control device turns off the three-phase first changeover switch, the first motor-generator operates as a generator, i.e., operates in the fourth operation mode; When the third circuit control device turns on the three-phase second changeover switch, the second motor-generator is driven by the second frequency converter and operates as a motor, i.e., operates in the fifth operation mode; The energy-saving power generation system according to claim 14, characterized in that, when the third circuit control device turns off the three-phase second changeover switch, the second motor-generator operates as a generator, i.e., operates in the sixth operating mode.

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