Superconducting motor generator set

Abstract

The invention relates to a superconducting motor generator set, and belongs to the technical field of power generation equipment. The unit mainly comprises a starting motor group, a speed reducer, a generator, an energy supply group and a transformer substation group. The superconducting motor and the auxiliary starting motor in the starting motor set cooperatively provide mechanical energy, the rotating speed of the superconducting motor ranges from 1000 r / min to 1500 r / min, the high-efficiency energy-saving characteristic is achieved, compared with a common motor, electricity is saved by 40%-50% under the same power, and the rotating speed and the matched torque are accurately adjusted. The 1000-kilowatt four-stage synchronous generator is responsible for converting mechanical energy into electric energy. All the assemblies are connected through belts, and transmission is stable. The energy supply set supplies power to the starting motor set through wind energy or solar energy, and the transformer substation set converts and stores electric energy. In addition, the equipment adopts various safety measures, such as a transmission safety device, a belt pulley safety cover and the like, and is equipped with a heat dissipation and temperature control detection device.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation equipment, specifically to a superconducting motor generator set, an efficient power generation equipment based on wind energy or solar energy, and is particularly applicable to power production scenarios with high requirements for power generation efficiency, energy utilization, and equipment compactness. Background Art

[0002] With the continuous growth of the global demand for clean energy, wind energy and solar energy, as important components of sustainable energy, their power generation technologies are also continuously developing. However, there are still many deficiencies in the current traditional wind energy and solar energy power generation systems in terms of power generation efficiency, equipment stability, and comprehensive energy utilization.

[0003] In traditional wind power generation systems, the rotation speed of the wind turbine is greatly affected by the natural wind speed and it is difficult to stably stay in the optimal power generation rotation speed range of the generator, resulting in obvious fluctuations in power generation efficiency. For example, at low wind speeds, the rotation speed of the wind turbine is too low and the output power of the generator cannot reach the rated value; while at high wind speeds, complex pitch or yaw systems are required to adjust the angle of the wind turbine blades to avoid damage to the wind turbine due to overspeed. This not only increases the equipment cost and maintenance difficulty, but also loses power generation efficiency to a certain extent.

[0004] In terms of solar power generation, although the photoelectric conversion efficiency of photovoltaic panels is continuously increasing, solar power generation is intermittent and unstable, and energy storage equipment needs to be equipped to ensure continuous power supply. At the same time, in the process of converting mechanical energy into electrical energy by traditional power generation equipment, the energy loss of the motor is relatively large. Taking an ordinary motor as an example, a large amount of heat is generated during its operation due to the existence of resistance, and this part of the energy is dissipated in the form of heat, causing waste of energy. According to statistics, the energy loss of an ordinary motor during power generation can reach 30%-50% of the total input energy, which seriously affects the energy utilization efficiency of the entire power generation system.

[0005] In addition, the structural design of traditional power generation equipment is often not compact enough, with large volume and weight, which not only increases the installation and transportation costs of the equipment, but also places high requirements on site conditions. For example, some large wind turbine generator sets have huge tower frames and nacelles, requiring special transportation equipment and wide installation sites, and it is difficult to deploy in some areas with complex terrain or limited space.

[0006] In summary, there are many problems in the existing wind energy and solar energy power generation systems in terms of power generation efficiency, energy loss, equipment stability, and structural compactness. There is an urgent need for a new type of power generation equipment to solve these problems in order to improve the utilization efficiency of clean energy and the overall performance of the power generation system. The superconducting motor generator set of the present invention is proposed based on this background, aiming to overcome the deficiencies of the prior art and achieve more efficient and stable power generation. Summary of the Invention

[0007] The present invention aims to solve the above technical problems and provides a superconducting motor generator set.

[0008] To solve the above technical problems, the technical solution provided by the present invention is: a superconducting motor generator set, comprising:

[0009] A starting motor set for providing mechanical energy, specifically including a superconducting motor with a rotational speed of 1000 - 1500 r / min;

[0010] A speed reducer for speed regulation and torque matching. One side of the speed reducer is provided with an output shaft, and the other side is provided with an input shaft. Pulley one is provided on both the output shaft and the input shaft.

[0011] A generator for connecting to the speed reducer and converting mechanical energy into electrical energy. The generator is a four - pole synchronous generator with a rotational speed of 500 - 1500 r / min;

[0012] Pulley two is provided on the main shaft of the starting motor and is connected to pulley one on the input shaft through multiple belts. Pulley three is provided on the main shaft of the generator and is connected to pulley one on the output shaft through multiple belts.

[0013] Further, the starting motor set further includes an auxiliary starting motor, which is a common motor, specifically a three - phase asynchronous motor with a rotational speed of 1000 - 1500 r / min;

[0014] Pulley four is connected to the main shaft of the auxiliary starting motor and is connected to pulley one on the input shaft through multiple belts.

[0015] Further, the auxiliary starting motor is arranged above or on one side of the superconducting motor. When the auxiliary starting motor is arranged on one side of the superconducting motor, a moving plate is provided at the bottom; when the auxiliary starting motor is arranged above the superconducting motor, it is fixedly connected to the outer shell of the superconducting motor.

[0016] Further, pulley one and pulley three are seven - groove pulleys, pulley two is a four - groove pulley, and pulley four is a three - groove pulley.

[0017] Further, it further includes an energy supply group for providing electrical energy to the starting motor set, specifically a wind power generation group or a solar power generation group.

[0018] Further, it further includes a substation group for converting and storing the electrical energy generated by the generator. The substation is connected to other electrical equipment or incorporated into the national power grid.

[0019] Furthermore, a transfer fulcrum is provided between the starting motor set and the speed reducer, and the transfer fulcrum is independently arranged on the support mechanism or integrated with the speed reducer or the generator.

[0020] Furthermore, the starting motor set is one of a normal temperature superconducting motor, a normal temperature semi-superconducting motor, and a full superconducting motor.

[0021] The advantages of the present invention compared with the prior art are as follows:

[0022] 1. High efficiency and energy saving

[0023] Using the superconducting motor 101 as the main component of the starting motor set 1 can save 40 - 50% of electricity compared with a normal motor under the same power. This is because the resistance of the superconducting motor is almost zero in the superconducting state, greatly reducing the energy loss caused by resistance heating, enabling electrical energy to be converted into mechanical energy more efficiently, and improving the energy utilization efficiency of the entire power generation system.

[0024] With a reasonable transmission structure design, through the precise speed regulation and torque matching of the speed reducer 2, as well as the optimized combination of the belt pulley and the belt, the high efficiency of mechanical energy transmission is ensured, the transmission loss is reduced, and the power generation efficiency is further improved.

[0025] 2. Stable and reliable

[0026] The setting of the auxiliary starting motor 102 in the starting motor set 1 assists the superconducting motor 101 to drive the speed reducer 2 at the initial stage of starting, sharing the load during starting, reducing the starting difficulty of the superconducting motor 101, and improving the stability and reliability of system starting. After the system operates normally, the auxiliary starting motor 102 is turned off, which not only ensures the smooth start but also saves energy.

[0027] The connection method of the multi-groove belt pulley and multiple belts increases the friction and contact area between the belt and the belt pulley, effectively avoiding the belt slipping phenomenon, ensuring the stability of power transmission, and enabling the entire power generation system to operate stably for a long time.

[0028] 3. Compact structure

[0029] Compared with traditional power generation equipment, the superconducting motor generator set of the present invention is more compact in structure design. The length of the superconducting motor 101 is 50% of that of a normal motor. Under the same power, it has a smaller volume and lighter weight. This not only reduces the floor area occupied by the equipment but also reduces the installation and transportation costs, making it more convenient to deploy and use the equipment under different site conditions.

[0030] Through a reasonable layout and a compact connection method between components, the overall structure of the equipment is further optimized, and the space utilization rate is improved.

[0031] 4. High safety

[0032] The safety measures of the driving wheel are strengthened, and a transmission insurance device and a pulley safety cover are set. The transmission insurance device can cut off the power transmission in time when abnormalities occur in the transmission system, such as overload or jamming, to protect the equipment from damage; the pulley safety cover can prevent operators from contacting the high-speed rotating pulley, avoiding safety accidents and ensuring the personal safety of operators.

[0033] The wiring installation meets the standards, and the wiring is laid and connected strictly in accordance with relevant electrical safety standards to ensure the safety and reliability of the electrical system and reduce potential safety hazards caused by electrical faults.

[0034] The detection of the heat dissipation device and the thermostat is strengthened, and the temperature change during the operation of the equipment can be monitored in real time. When the temperature exceeds the set threshold, the heat dissipation device starts automatically to reduce the equipment temperature in time, avoiding performance degradation or damage of the equipment caused by overheating, and further improving the safety and stability of the equipment operation. Description of the drawings

[0035] Figure 1 is a structural schematic diagram of a superconducting motor generator set of the present invention Figure 1 .

[0036] Figure 2 is a structural schematic diagram of a superconducting motor generator set of the present invention Figure 2 .

[0037] Figure 3 is a structural schematic diagram of a superconducting motor generator set of the present invention Figure 3 .

[0038] As shown in the figure: 1. Starting motor set; 101. Superconducting motor; 102. Auxiliary starting motor; 2. Reducer; 201. Input shaft; 202. Output shaft; 3. Generator; 4. Pulley 1; 5. Pulley 2; 6. Pulley 3; 7. Pulley 4; 8. Belt. Detailed implementation manners

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; for those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific situations.

[0041] I. Working principle of the present invention:

[0042] Overall structural composition

[0043] The superconducting motor generator set of the present invention mainly consists of a starting motor set 1, a speed reducer 2, a generator 3, an energy supply group, a substation group, and a secondary power generation component.

[0044] Starting motor set 1

[0045] It is responsible for providing mechanical energy and is composed of a superconducting motor 101 and an auxiliary starting motor 102. The starting motor set 1 can be one of a normal temperature superconducting motor, a normal temperature semi-superconducting motor, and a fully superconducting motor. Compared with ordinary motors, it can save 40 - 50% of electricity under the same power, greatly reducing energy loss. The rotational speed of the superconducting motor 101 is in the range of 1000 - 1500 r / min and has superconducting characteristics. The auxiliary starting motor 102 is an ordinary motor, specifically a three-phase asynchronous motor with a rotational speed of 1000 - 1500 r / min. In the initial stage of startup, the auxiliary starting motor 102 assists the superconducting motor 101 to drive the speed reducer 2, and then it is turned off after the system runs normally to save energy.

[0046] Speed reducer 2

[0047] Its function is speed regulation and torque matching. It has an output shaft 202 on one side and an input shaft 201 on the other side. Pulley 1 4 is installed on both the output shaft 202 and the input shaft 201. Through the speed reducer 2, the rotational speed of the starting motor set 1 is adjusted to match the rotational speed of the generator 3, and at the same time, torque matching is completed to ensure that the generator can generate electricity efficiently and stably. A transfer fulcrum is provided between the starting motor set 1 and the speed reducer 2, and this transfer fulcrum can be independently installed on the support mechanism or integrated with the speed reducer 2 or the starting motor set 1.

[0048] Generator 3

[0049] It is a four-pole synchronous generator with a power of 1000 kW, and the rotational speed range is 500 - 1500 r / min. It is connected to the speed reducer 2 and is responsible for converting mechanical energy into electrical energy.

[0050] Transmission connection method

[0051] The superconducting motor 101 is connected to the speed reducer 2: A pulley 2 5 is provided on the main shaft of the superconducting motor 101 and is connected to the pulley 1 4 on the input shaft 201 through multiple belts 8. Among them, the pulley 1 4 is a seven-groove pulley, and the pulley 2 5 is a four-groove pulley, and they are connected by four belts. This multi-groove belt connection method can ensure the stability and reliability of power transmission, effectively prevent belt slip, and enable the mechanical energy of the superconducting motor 101 to be efficiently transmitted to the input shaft 201 of the speed reducer 2.

[0052] The speed reducer 2 is connected to the generator 3: A pulley three 6 is provided on the main shaft of the generator 3 and is connected to a pulley one 4 on the output shaft 202 through a plurality of belts 8. The pulley three 6 is also a seven-groove pulley and is connected to the pulley one 4 on the output shaft 202 through multiple belts, transmitting the speed and torque adjusted by the speed reducer 2 to the generator 3 to achieve efficient conversion of mechanical energy into electrical energy.

[0053] The auxiliary starting motor 102 is connected to the speed reducer 2: A pulley four 7 is connected to the main shaft of the auxiliary starting motor 102 and is connected to a pulley one 4 on the input shaft 201 through a plurality of belts 8. The pulley four 7 is a three-groove pulley and is connected to the pulley one 4 through three belts. The auxiliary starting motor 102 is arranged above or on one side of the superconducting motor 101. When arranged on one side, a moving plate is provided at the bottom, and the tightness of the belt can be adjusted through the moving plate. This can ensure that the auxiliary starting motor 102 effectively assists the superconducting motor 101 to drive the speed reducer 2 at the initial stage of startup. After the mechanical operation is normal, the auxiliary starting motor 102 can be returned to be shut down.

[0054] Energy supply and power transformation

[0055] Energy supply group

[0056] It is used to provide electrical energy for the starting motor group 1, specifically, it can be a wind power generation group or a solar power generation group. The wind power generation group drives the wind wheel to rotate by means of wind power, transmits mechanical energy to the generator through the transmission system, and then generates electrical energy; the solar power generation group converts solar energy into electrical energy through photovoltaic panels. These electrical energies are stored in energy storage devices to provide a stable power supply for the starting motor group 1, achieving the recycling of clean energy.

[0057] Substation group

[0058] It is mainly used for converting and storing the electrical energy generated by the generator. This substation is connected to other electrical equipment or incorporated into the national power grid. The electrical energy generated by the generator first undergoes voltage transformation through the transformer of the substation group, raising the low voltage to a high voltage suitable for grid transmission, and then is transmitted to the grid through transmission lines or stored in energy storage devices for use when needed.

[0059] Secondary power generation component

[0060] The secondary power generation component is an important part of this system. During the operation of the generator 3, part of the mechanical energy generated is used not only for direct power generation but also transmitted to the secondary power generation component. The secondary power generation component utilizes this part of the mechanical energy to generate electricity again through the principle of electromagnetic induction. For example, an additional electromagnetic induction device is set on the rotating shaft of the generator 3. When the rotating shaft rotates, the conductors inside the device cut the magnetic induction lines, thereby generating an induced electromotive force to achieve secondary power generation. The electric energy generated by secondary power generation can be directly transmitted to the substation group and converted, stored, and distributed together with the electric energy generated by the main generator, further improving the energy utilization efficiency of the entire system.

[0061] II. Implementation Modes:

[0062] 2.1 Equipment Assembly

[0063] Start-up Motor Group Assembly: First, fix the superconducting motor 101 at the preset installation position to ensure that its main shaft is in a horizontal state. Then, according to the design requirements, install the auxiliary start-up motor 102 above or on one side of the superconducting motor 101. If installed on one side, align the moving plate at the bottom of the auxiliary start-up motor 102 with the preset slide rail and fix the moving plate so that it can move smoothly on the slide rail. Next, install the pulley II 5 on the main shaft of the superconducting motor 101 and the pulley IV 7 on the main shaft of the auxiliary start-up motor 102.

[0064] Reducer Installation: Place the reducer 2 on one side of the start-up motor group 1 so that the input shaft 201 of the reducer 2 and the main shafts of the superconducting motor 101 and the auxiliary start-up motor 102 are in the same plane and parallel to each other. Install the pulley I 4 on the input shaft 201 and the output shaft 202 respectively.

[0065] Generator Installation: Install the generator 3 on the other side of the reducer 2 so that the main shaft of the generator 3 and the output shaft 202 of the reducer 2 are in the same plane and parallel to each other, and install the pulley III 6 on the main shaft of the generator 3.

[0066] Belt Connection: Select a belt 8 of appropriate specifications and connect the pulley II 5 on the main shaft of the superconducting motor 101 and the pulley I 4 on the input shaft 201 of the reducer 2 with four belts; connect the pulley IV 7 on the main shaft of the auxiliary start-up motor 102 and the pulley I 4 on the input shaft 201 of the reducer 2 with three belts; connect the pulley I 4 on the output shaft 202 of the reducer 2 and the pulley III 6 on the main shaft of the generator 3 with multiple belts. During the connection process, ensure that the tightness of the belt is appropriate, and the tightness of the belt can be finely adjusted by adjusting the moving plate at the bottom of the auxiliary start-up motor 102.

[0067] Connection between the Energy Supply Group and the Substation Group

[0068] Power supply group connection: If a wind power generation group is selected as the power supply group, connect the output cable of the wind turbine to the input port of the energy storage device, ensuring a firm connection and compliance with electrical safety standards. At the same time, connect the output port of the energy storage device to the power input port of the starting motor group 1 to supply electrical energy to the starting motor group 1. If a solar power generation group is selected, connect the photovoltaic panel array to the energy storage device through devices such as a busbar box and an inverter, and then connect the energy storage device to the starting motor group 1.

[0069] Substation group connection: Connect the output cable of the generator 3 to the input port of the transformer of the substation group, and connect the output port of the transformer to the transmission line or the energy storage device. During the connection process, wire according to the electrical schematic diagram strictly and ensure that the insulation performance of all lines is good and the grounding is reliable.

[0070] Installation of safety and heat dissipation devices

[0071] Installation of safety devices: Install pulley safety covers around each pulley, ensuring that the safety covers can completely cover the pulleys to prevent personnel from coming into contact with the high-speed rotating pulleys. Install a transmission safety device, such as an overload protection clutch, at a suitable position in the transmission system. When the transmission system experiences overload or jamming, the safety device can automatically cut off the power transmission.

[0072] Installation of heat dissipation devices and temperature controllers: Install heat dissipation devices, such as cooling fans or radiators, near components that are prone to generating heat, such as the superconducting motor 101, the reducer 2, and the generator 3. At the same time, install temperature controllers on these components, connect the signal output port of the temperature controller to the control circuit of the heat dissipation device to achieve real-time temperature monitoring and automatic control of the heat dissipation device. When the component temperature exceeds the set threshold, the temperature controller sends a signal to start the heat dissipation device for heat dissipation.

[0073] 2.2 Embodiments

[0074] Embodiment 1

[0075] Starting motor group:

[0076] Superconducting motor 101: Select a room-temperature superconducting motor with a power of 800 kW and a speed of 1200 r / min. It saves 45% of electricity compared to a conventional motor at the same power.

[0077] Assume the efficiency of a conventional motor is 85%, then the efficiency calculation of this superconducting motor is as follows:

[0078] Superconducting motor efficiency = Conventional motor efficiency + (1 - Conventional motor efficiency) × Power saving rate, that is, 85% + (1 - 85%) × 45% = 91.75%

[0079] Auxiliary starting motor 102: A three-phase asynchronous motor with a rotational speed of 1200 r / min and a power of 100 kW. Generally, the efficiency of a three-phase asynchronous motor is between 80% - 90%, and here it is taken as 85%.

[0080] Reducer: Input shaft rotational speed: Provided by the superconducting motor 101, it is 1200 r / min. Output shaft rotational speed: Adjusted to the speed of 800 r / min suitable for the generator 3. Speed ratio: Speed ratio = Input shaft rotational speed ÷ Output shaft rotational speed, that is, 1200 ÷ 800 = 1.5

[0081] Pulley configuration: The pulley one 4 on the input shaft 201 and the output shaft 202 is a seven-groove pulley. Generally, the efficiency of belt drive is between 95% - 98%. Assume the belt drive efficiency of this reducer is 96%.

[0082] Generator 3: A four-pole synchronous generator with a power of 1000 kW and a rotational speed of 800 r / min. Generally, the efficiency of a four-pole synchronous generator is between 90% - 95%, and here it is taken as 92%.

[0083] Power supply group: Adopt a solar power generation group. The power of the photovoltaic panels is 1000 kW, and the average daily sunshine is 6 hours. The daily power generation is calculated as follows: Daily power generation = Photovoltaic panel power × Sunshine hours, that is, 1000 × 6 = 6000 kWh; It is stored in the energy storage device to supply power to the starting motor group 1. Assume the comprehensive efficiency of the solar power generation system (including photovoltaic panel conversion efficiency, energy storage efficiency, etc.) is 70%.

[0084] Secondary power generation component: An electromagnetic induction device set on the rotating shaft of the generator 3. After testing, the secondary power generation can reach 50 kW, and the generated electric energy is transmitted to the substation group. Assume the efficiency of the secondary power generation component is 75%.

[0085] Calculation of overall power generation efficiency:

[0086] Input power of the starting motor group:

[0087] Input power of the starting motor group = Superconducting motor power ÷ Superconducting motor efficiency + Auxiliary starting motor power ÷ Auxiliary starting motor efficiency, that is, 800 ÷ 91.75% + 100 ÷ 85% ≈ 872 + 118 = 990 kW

[0088] Input power to the generator via the reducer:

[0089] Input power to the generator via the reducer = Input power of the starting motor group × Reducer belt drive efficiency, that is, 990 × 96% = 950.4 kW

[0090] Output power of the generator:

[0091] Generator output power = Input power to the generator via the speed reducer × Generator efficiency, i.e., 950.4 × 92% = 874.368 kW

[0092] Output power of secondary power generation:

[0093] Output power of secondary power generation = Secondary power generation × Efficiency of secondary power generation components, i.e., 50 × 75% = 37.5 kW

[0094] Total output power:

[0095] Total output power = Generator output power + Output power of secondary power generation, i.e., 874.368 + 37.5 = 911.868 kW

[0096] Overall power generation efficiency:

[0097] Overall power generation efficiency = (Total output power ÷ Input power of the starting motor set) × 100%, i.e., (911.868 ÷ 990) × 100% ≈ 92.11%

[0098] Example 2:

[0099] Starting motor set:

[0100] Superconducting motor 101: An all-superconducting motor with a power of 700 kW, a speed of 1300 r / min, and a power saving rate of 50%.

[0101] Assume the efficiency of a common motor is 85%, then the efficiency of this all-superconducting motor is calculated as follows:

[0102] Efficiency of all-superconducting motor = Efficiency of common motor + (1 - Efficiency of common motor) × Power saving rate, i.e., 85% + (1 - 85%) × 50% = 92.5%

[0103] Auxiliary starting motor 102: A three-phase asynchronous motor with a speed of 1300 r / min, a power of 120 kW, and an efficiency of 85%.

[0104] Speed reducer:

[0105] Input shaft speed: 1300 r / min. Output shaft speed: Adapted to the speed of generator 3, 1000 r / min. Speed ratio: Speed ratio = Input shaft speed ÷ Output shaft speed, i.e., 1300 ÷ 1000 = 1.3

[0106] Pulley configuration: The pulley 4 on the input shaft 201 and the output shaft 202 is a seven-groove pulley. Assume the belt drive efficiency is 97%.

[0107] Generator 3: A four-pole synchronous generator with a power of 1000 kW, a speed of 1000 r / min, and an efficiency of 93%.

[0108] Power supply group: A wind power generation group is used, with a wind turbine diameter of 100 meters and an average wind speed of 8 m / s. According to the wind energy formula "wind energy power = 0.5 × air density × wind speed³ × wind turbine swept area × wind energy utilization coefficient", the calculated wind energy power generation is approximately 800 kilowatts (the air density is taken as 1.225 kg / m 3 , and the wind turbine swept area = π × (wind turbine radius)² = π × (100 ÷ 2)², with the wind energy utilization coefficient taken as 0.4).

[0109] The comprehensive efficiency of the wind energy power generation system (including wind turbine efficiency, transmission efficiency, power generation efficiency, etc.) is assumed to be 35%.

[0110] Secondary power generation component: An electromagnetic induction device is set on the rotating shaft of the generator 3, with a secondary power generation of approximately 60 kilowatts, and the efficiency of the secondary power generation component is assumed to be 80%.

[0111] Calculation of the overall power generation efficiency:

[0112] Input power of the starting motor group:

[0113] Input power of the starting motor group = superconducting motor power ÷ superconducting motor efficiency + auxiliary starting motor power ÷ auxiliary starting motor efficiency, that is, 700 ÷ 92.5% + 120 ÷ 85% ≈ 757 + 141 = 898 kilowatts

[0114] Input power to the generator through the speed reducer:

[0115] Input power to the generator through the speed reducer = input power of the starting motor group × belt transmission efficiency of the speed reducer, that is, 898 × 97% = 871.06 kilowatts

[0116] Output power of the generator:

[0117] Output power of the generator = input power to the generator through the speed reducer × generator efficiency, that is, 871.06 × 93% = 810.086 kilowatts

[0118] Output power of the secondary power generation:

[0119] Output power of the secondary power generation = secondary power generation × efficiency of the secondary power generation component, that is, 60 × 80% = 48 kilowatts

[0120] Total output power:

[0121] Total output power = output power of the generator + output power of the secondary power generation, that is, 810.086 + 48 = 858.086 kilowatts

[0122] Overall power generation efficiency:

[0123] Overall power generation efficiency = (total output power ÷ input power of the starting motor set) × 100%, that is, (858.086 ÷ 898) × 100% ≈ 95.56%

[0124] Example 3:

[0125] Starting motor set:

[0126] Superconducting motor 101: A room-temperature semi-superconducting motor with a power of 900 kW, a rotational speed of 1100 r / min, and a power saving of 40%.

[0127] Assume the efficiency of a common motor is 85%, then the efficiency of this room-temperature semi-superconducting motor is calculated as follows:

[0128] Efficiency of room-temperature semi-superconducting motor = Efficiency of common motor + (1 - Efficiency of common motor) × Power saving rate, that is, 85% + (1 - 85%) × 40% = 91%

[0129] Auxiliary starting motor 102: A three-phase asynchronous motor with a rotational speed of 1100 r / min, a power of 80 kW, and an efficiency of 85%.

[0130] Reducer: Input shaft rotational speed: 1100 r / min. Output shaft rotational speed: Adjusted to 600 r / min, the rotational speed applicable to Generator 3. Speed ratio: Speed ratio = Input shaft rotational speed ÷ Output shaft rotational speed, that is, 1100 ÷ 600 ≈ 1.83

[0131] Pulley configuration: The pulley 4 on the input shaft 201 and the output shaft 202 is a seven-groove pulley. Assume the belt drive efficiency is 95%.

[0132] Generator 3: A four-pole synchronous generator with a power of 1000 kW, a rotational speed of 600 r / min, and an efficiency of 90%.

[0133] Energy supply group: Adopts a combination of a solar power generation group and a wind power generation group. The power of the solar photovoltaic panel is 500 kW, and the daily sunshine duration is 5 hours. The power generation is calculated as follows:

[0134] Daily power generation = Power of photovoltaic panel × Sunshine hours, that is, 500 × 5 = 2500 kWh

[0135] The power of the wind power generation group is 400 kW. Assume the comprehensive efficiency of the solar power generation system is 70% and the comprehensive efficiency of the wind power generation system is 35%.

[0136] Actual input power of solar energy:

[0137] Actual input power of solar energy = (Power of photovoltaic panel × Comprehensive efficiency of solar power generation system) ÷ 24 (average over 24 hours a day), that is, (500 × 70%) ÷ 24 ≈ 14.58 kW

[0138] Actual input power of wind energy:

[0139] Actual input power of wind energy = Power of wind energy generator set × Comprehensive efficiency of wind energy power generation system, i.e., 400 × 35% = 140 kW

[0140] Total actual input power of energy supply group:

[0141] Total actual input power of energy supply group = Actual input power of solar energy + Actual input power of wind energy, i.e., 14.58 + 140 = 154.58 kW

[0142] Secondary power generation component: An electromagnetic induction device set on the rotating shaft of generator 3, with the secondary power generation approximately 40 kW and the assumed efficiency of the secondary power generation component being 70%.

[0143] Calculation of overall power generation efficiency:

[0144] Input power of starting motor group:

[0145] Input power of starting motor group = Power of superconducting motor ÷ Efficiency of superconducting motor + Power of auxiliary starting motor ÷ Efficiency of auxiliary starting motor, i.e., 900 ÷ 91% + 80 ÷ 85% ≈ 989 + 94 = 1083 kW

[0146] Input power to generator via speed reducer:

[0147] Input power to generator via speed reducer = Input power of starting motor group × Belt transmission efficiency of speed reducer, i.e., 1083 × 95% = 1028.85 kW

[0148] Output power of generator:

[0149] Output power of generator = Input power to generator via speed reducer × Efficiency of generator, i.e., 1028.85 × 90% = 925.965 kW

[0150] Output power of secondary power generation:

[0151] Output power of secondary power generation = Secondary power generation × Efficiency of secondary power generation component, i.e., 40 × 70% = 28 kW

[0152] Total output power:

[0153] Total output power = Output power of generator + Output power of secondary power generation, i.e., 925.965 + 28 = 953.965 kW

[0154] Overall power generation efficiency:

[0155] Overall power generation efficiency = (Total output power ÷ Input power of starting motor group) × 100%, i.e., (953.965 ÷ 1083) × 100% ≈ 88.09%.

[0156] From the power generation data under the above different parameters, it can be seen that as the rotational speed of the superconducting motor increases and the energy input of the energy supply group increases, such as the wind speed increasing or the light intensity increasing, both the output power and power generation efficiency of the generator have been improved. During actual operation, the equipment parameters can be reasonably adjusted according to specific energy conditions and requirements to achieve more efficient power generation. At the same time, the equipment should be regularly maintained, the wear condition of the belt should be checked, and the severely worn belt should be replaced in time; check whether the connection bolts of each component are loose and tighten them in time; conduct insulation detection on the electrical system, etc., to ensure the long-term stable and safe operation of the equipment.

[0157] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments to this technical solution without creative efforts without departing from the purpose of the present invention creation, they shall fall within the protection scope of the present invention.

Claims

1. A superconducting motor generator set, characterized in that: Including: A starting motor set (1) for providing mechanical energy, specifically including a superconducting motor (101); A speed reducer (2) for speed regulation and torque matching. One side of the speed reducer (2) is provided with an output shaft (202), and the other side is provided with an input shaft (201). Pulley one (4) is provided on both the output shaft (202) and the input shaft (201); A generator (3) for connecting to the speed reducer (2) to convert mechanical energy into electrical energy. The generator (3) is a 1000-kilowatt four-pole synchronous generator; Pulley two (5) is provided on the main shaft of the superconducting motor (101), and is connected to pulley one (4) on the input shaft (201) through multiple belts (8). Pulley three (6) is provided on the main shaft of the generator (3), and is connected to pulley one (4) on the output shaft (202) through multiple belts (8).

2. The superconducting motor generator set according to claim 1, characterized in that: The starting motor set (1) further includes an auxiliary starting motor (102), and the auxiliary starting motor (102) is an ordinary motor; Pulley four (7) is connected to the main shaft of the auxiliary starting motor (102), and is connected to pulley one (4) on the input shaft (201) through multiple belts (8).

3. The superconducting motor generator set according to claim 2, characterized in that: The auxiliary starting motor (102) is arranged above or on one side of the superconducting motor (101). When the auxiliary starting motor (102) is arranged on one side of the superconducting motor (101), a moving plate is provided at the bottom; when the auxiliary starting motor (102) is arranged above the superconducting motor (101), it is fixedly connected to the outer shell of the superconducting motor (101).

4. A superconducting motor generator set according to claim 3, characterized in that: Pulley one (4) and pulley three (6) are seven-groove pulleys, pulley two (5) is a four-groove pulley, and pulley four (7) is a three-groove pulley.

5. A superconducting motor generator set according to claim 1, characterized in that: It further includes an energy supply group for supplying electrical energy to the starting motor set (1), specifically a wind power generation group or a solar power generation group.

6. A superconducting motor generator set according to claim 1, characterized in that: It further includes a substation group for converting and storing the electrical energy generated by the generator. The substation is connected to other electrical equipment or incorporated into the national power grid.

7. A superconducting motor generator set according to claim 1, characterized in that: A transfer fulcrum is provided between the starting motor set (1) and the speed reducer (2), and the transfer fulcrum is independently arranged on the support mechanism or integrated with the speed reducer (2) or the starting motor set (1).

8. A superconducting motor generator set according to claim 1, characterized in that: The starting motor set (1) is one of a normal temperature superconducting motor, a normal temperature semi-superconducting motor, and a fully superconducting motor.

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