Active aerodynamic energy-saving method

Abstract

The invention discloses an active aerodynamic energy-saving method, which belongs to the technical field of transportation energy conservation, is used for solving the problems of reducing dependence on traditional energy and reducing carbon emission, and comprises a train and a wind generating set mounted at the top of the train, the wind generating set comprises a wind wheel, a generator, a speed regulating mechanism and a tower; when the train is started and starts to run, the wind generating set installed on the top of the train works according to the following steps of 101, airflow capturing, 102, mechanical energy conversion, 103, electric energy generation, 104, electric energy adjusting and controlling, 105, energy storage and distribution and 106, safety and stability guaranteeing. The wind generating set is installed on the top of the train, air kinetic energy in the train running process is converted into electric energy, part of energy is provided for the train, energy consumption is reduced, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of transportation energy conservation, and is a method for generating electricity by using the aerodynamic force generated during the operation of a train. Specifically, it is an active aerodynamic energy-saving method. Background Art

[0002] The present invention is a creative reform of all current technologies that rely on aerodynamic force, also known as natural air flow, to produce renewable energy. Especially for the current wind power generation that depends passively on wind to produce renewable energy, the advantage of the active aerodynamic energy generation technology is that it can completely get rid of the backward situation that modern wind turbines extremely rely on natural wind to generate electricity. It can enable modern wind turbines to achieve high-efficiency production and an energy supply mode that is available at any time in a windless state through the close combination of modern transportation tools and air.

[0003] Therefore, the present invention has introduced this renewable energy technology of active aerodynamic force that is extremely efficient in resources, can save material resources, has a low cost, is easy to exploit, and integrates many advantages. Summary of the Invention

[0004] The purpose of the present invention is to provide an effective utilization of the aerodynamic force during the operation of a train, create additional energy, reduce the train's dependence on traditional energy, reduce carbon emissions, and have good energy-saving and emission-reduction effects. At the same time, the device is installed on the top of the train, does not occupy additional ground space, and has little impact on the normal operation of the train.

[0005] To achieve the above technical purpose, the technical solution adopted by the present invention is as follows:

[0006] The active aerodynamic energy-saving method includes a train and a wind power generation set installed on the top of the train; the wind power generation set includes a wind turbine, a generator, a speed regulation mechanism, and a tower; when the train starts and begins to run, the wind power generation set installed on the top of the train works according to the following steps.

[0007] Step 101, air flow capture. The running of the train drives the surrounding air to flow, forming a high-speed air flow. The wind wheel of the wind power generation set is in the air flow channel, and the streamline design efficiently captures the kinetic energy of this part of the air. When the air flow impacts the blades, the blades will receive a tangential force, prompting the wind wheel to start rotating.

[0008] Step 102, mechanical energy conversion. The wind wheel is connected to the transmission system through a hub. When the wind wheel rotates, it drives the low-speed shaft in the transmission system to rotate. The low-speed shaft is connected to a gearbox, and the gearbox increases the rotational speed of the low-speed shaft, enabling the high-speed shaft to rotate at a higher speed, thereby increasing the output of mechanical energy to match the working rotational speed requirements of the generator.

[0009] Step 103, electric energy is generated. The high-speed shaft is connected to the rotor of the generator. The rotor rotates at high speed in the stator magnetic field of the generator. According to the principle of electromagnetic induction, the stator winding cuts the magnetic lines of force, thereby generating an induced electromotive force in the stator winding and outputting alternating current. At this time, mechanical energy is successfully converted into electrical energy.

[0010] Step 104, power regulation and control, the generated AC power first enters the rectifier device to convert it into DC power, and then the DC power passes through the inverter to convert it into AC power of suitable frequency and voltage according to the needs of the train's electrical equipment; at the same time, the control system monitors the power parameters output by the generator in real time, such as voltage, frequency, and current, to ensure the stability of the power quality, and adjusts the working state of the wind turbine generator set according to the running state of the train and the power demand;

[0011] Step 105, energy storage and distribution, a part of the electric energy is directly supplied to the electric equipment on the train, such as lighting, ventilation, signal system, etc., and the remaining electric energy is transmitted to the energy storage system, such as a high-performance battery pack. When the electric energy generated by the wind turbine is insufficient, or the train is in a peak power consumption stage such as acceleration, the storage system releases electric energy to ensure the stability of the train's power consumption;

[0012] Step 106, safety and stability assurance, the speed regulating mechanism monitors the wind rotor speed in real time. When the wind speed is too high and may cause the wind rotor to overspeed, the speed regulating mechanism adjusts the blade angle to change the wind rotor's efficiency in capturing airflow, thereby limiting the wind rotor speed and ensuring safe operation of the unit. In addition, the structural design of the entire wind turbine generator set is firm and can withstand the strong airflow impact and vibration generated by the high-speed operation of the train, ensuring long-term stable operation.

[0013] The invention adopts the above technical solution, and designs a special installation platform on the top of the train to stably install a medium-sized wind turbine generator set. The wind turbine generator set includes a wind wheel, a generator, a speed regulating mechanism, a tower and other parts. The wind wheel adopts a streamlined design, which can efficiently capture the high-speed airflow generated when the train is running and convert wind energy into mechanical energy; the generator is connected to the wind wheel to further convert mechanical energy into electrical energy; the speed regulating mechanism ensures that the wind wheel can operate stably at different wind speeds; the tower provides stable support for the entire unit. Of course, it should be pointed out that the train in this technical solution can also be replaced by other means of transportation, such as rail trains, super-long cars, etc. are preferred. Using power tools as the carrier, modern wind turbines are grafted onto modern transportation tools, and the fixed assembly is designed as an integrated whole.

[0014] Compared with the prior art, the present invention aims to install a wind turbine on the top of a train to convert the kinetic energy of air during the operation of the train into electrical energy, thereby providing part of the energy for the train itself, reducing energy consumption and improving energy utilization efficiency. DETAILED DESCRIPTION

[0015] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with embodiments.

[0016] An active aerodynamic energy-saving method, including a train and a wind power generation set installed on the top of the train; the wind power generation set includes a wind turbine, a generator, a speed regulation mechanism and a tower; when the train starts and begins to run, the wind power generation set installed on the top of the train works according to the following steps,

[0017] Step 101, air flow capture. The running of the train drives the surrounding air to flow, forming a high-speed air flow. The wind turbine of the wind power generation set is in the air flow channel, and the streamline design efficiently captures the kinetic energy of this part of the air. When the air flow impacts the blades, the blades will receive a tangential force, prompting the wind turbine to start rotating;

[0018] Step 102, mechanical energy conversion. The wind turbine is connected to the transmission system through a hub. When the wind turbine rotates, it drives the low-speed shaft in the transmission system to rotate. The low-speed shaft is connected to a gearbox, and the gearbox increases the rotational speed of the low-speed shaft, enabling the high-speed shaft to rotate at a higher speed, thereby increasing the output of mechanical energy to match the working rotational speed requirements of the generator;

[0019] Step 103, electric energy generation. The high-speed shaft is connected to the rotor of the generator. The rotor rotates at a high speed in the stator magnetic field of the generator. According to the principle of electromagnetic induction, the stator winding cuts the magnetic force lines, thereby generating an induced electromotive force in the stator winding and outputting alternating current. At this time, the mechanical energy is successfully converted into electric energy;

[0020] Step 104, electric energy regulation and control. The generated alternating current first enters a rectifying device to convert it into direct current. Then, the direct current passes through an inverter and is converted into alternating current with a suitable frequency and voltage according to the requirements of the train's electrical equipment; at the same time, the control system monitors the electrical energy parameters output by the generator in real time, such as voltage, frequency, and current, to ensure the stability of the electrical energy quality, and adjusts the working state of the wind power generation set according to the train's running state and electrical energy demand;

[0021] Step 105, energy storage and distribution. A part of the electric energy is directly supplied to the electrical equipment on the train, such as lighting, ventilation, signal systems, etc., and the remaining electric energy is transported to an energy storage system, such as a high-performance battery pack. When the electric energy generated by the wind power generation set is insufficient, or the train is in a peak power consumption stage such as acceleration, the storage system releases electric energy to ensure the stable power supply of the train;

[0022] Step 106, Safety and Stability Assurance. The speed regulation mechanism monitors the wind turbine speed in real time. When the wind speed is too high and may cause the wind turbine to overspeed, the speed regulation mechanism changes the capture efficiency of the wind turbine for the airflow by adjusting the blade angle, thereby restricting the wind turbine speed and ensuring the safe operation of the unit. In addition, the structural design of the entire wind power generation unit is firm and can withstand the strong airflow impact and vibration generated during the high-speed operation of the train, ensuring long-term stable operation.

[0023] Preferably, the wind turbine adopts a streamlined design to efficiently capture the kinetic energy of the air.

[0024] The generator is connected to the wind turbine and is used to convert mechanical energy into electrical energy.

[0025] The speed regulation mechanism is used to ensure the stable operation of the wind turbine under different wind speeds.

[0026] The tower provides stable support for the wind power generation unit.

[0027] There is a special installation platform on the top of the train for installing the wind power generation unit.

[0028] It also includes an energy storage system for storing the electrical energy generated by the wind power generation unit.

[0029] The energy storage system is connected to the power consumption system of the train to provide energy for the train.

[0030] The design of the wind power generation unit can withstand the strong airflow impact during the high-speed operation of the train. The wind power generation unit adopts a medium-sized wind power generation unit.

[0031] The energy storage and distribution in the medium-sized wind power generation unit on the top of the train are as follows. The specific working steps are as follows.

[0032] The energy storage steps include:

[0033] 201 Electric Energy Reception. The qualified electric energy generated by the wind power generation unit and adjusted is transmitted to the energy storage system through the transmission line. At this time, the electric energy is in the form of direct current, meeting the input requirements of the energy storage device.

[0034] 202 Charging Control. The energy storage system is equipped with a special charging management module. This module first detects the current state of the battery pack, including parameters such as the remaining battery power, voltage, and temperature. Based on these parameters, the charging management module precisely regulates the charging current and voltage to ensure that the battery is charged in the most appropriate way. For example, when the battery power is low, a larger current is used for fast charging; when it is close to full charge, the current is reduced to prevent overcharging from damaging the battery.

[0035] 203 Electrical energy storage. The battery pack is the core component of energy storage. Taking lithium-ion batteries as an example, during the charging process, lithium ions are removed from the positive electrode and embedded in the negative electrode through the electrolyte. As more lithium ions are embedded, the chemical energy of the battery gradually increases, thus achieving electrical energy storage. During this process, the battery management system continuously monitors various performance indicators of the battery to ensure the safety and efficiency of the storage process.

[0036] 204 Safety monitoring. To ensure the safety of the energy storage process, the system is equipped with multiple safety monitoring mechanisms. In addition to monitoring the basic parameters of the battery, it also monitors the charge and discharge status, overcurrent, short circuit, etc. of the battery pack in real time. Once an abnormality is detected, protection measures are immediately activated, such as cutting off the charging circuit, to prevent safety accidents.

[0037] The energy distribution steps include,

[0038] 301 Demand detection. An intelligent power consumption monitoring system is installed on the train. This system collects information such as the power demand and operating status of each electrical device in real time, and comprehensively analyzes to obtain the real-time power consumption demand of the entire train. For example, when the train enters a tunnel, the power demand of the lighting system will increase; during the parking phase, some devices will be in a low-power or off state, and the power consumption demand will decrease accordingly.

[0039] 302 Power supply decision-making. The energy management unit makes power supply decisions based on the real-time power consumption demand and the remaining battery charge of the battery pack. If the electrical energy generated by the wind turbine is sufficient to meet the current power consumption demand and the battery pack is not fully charged, the excess electrical energy is preferentially stored in the battery pack, and at the same time, it is directly supplied to the electrical devices. If the power supply of the wind turbine is insufficient or it is in a shutdown state, the battery pack releases electrical energy to fill the power gap.

[0040] 303 Electrical energy output. The direct current output by the battery pack passes through a DC-DC converter or an inverter and is converted into electrical energy with a suitable voltage and frequency according to the requirements of the electrical devices. Then, the electrical energy is delivered to each electrical device on the train through the distribution line to meet its normal operation requirements.

[0041] 304 Dynamic adjustment. During the energy distribution process, the energy management unit continuously monitors the real-time power changes of the electrical devices and the battery charge status of the battery pack, and dynamically adjusts the power distribution strategy to ensure the stability and efficiency of the train's power consumption and achieve the rational use of energy.

[0042] The above has introduced the active aerodynamic energy-saving method provided by the present invention in detail. The description of the specific embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An active aerodynamic energy-saving method, characterized in that The invention comprises a train and a wind turbine generator set installed on the top of the train; the wind turbine generator set comprises a wind wheel, a generator, a speed regulating mechanism and a tower; when the train starts and begins to run, the wind turbine generator set installed on the top of the train works according to the following steps: Step 101, airflow capture. The running of the train drives the surrounding air to flow. The wind turbine rotor is in the airflow channel. The streamlined design efficiently captures this part of the air kinetic energy. When the airflow hits the blades, the blades will be subjected to a tangential force, causing the wind turbine rotor to start rotating. Step 102, mechanical energy conversion, the wind wheel is connected to the transmission system through the wheel hub. When the wind wheel rotates, it drives the low-speed shaft in the transmission system to rotate. The low-speed shaft is connected to the gear box. The gear box increases the speed of the low-speed shaft to rotate the high-speed shaft, thereby increasing the mechanical energy output to match the working speed requirement of the generator; Step 103, electric energy is generated, the high-speed shaft is connected to the rotor of the generator, the rotor rotates at high speed in the stator magnetic field of the generator, the stator winding cuts the magnetic lines of force, thereby generating an induced electromotive force in the stator winding and outputting alternating current. At this time, mechanical energy is successfully converted into electrical energy; Step 104, power regulation and control, the generated AC power first enters the rectifier device to convert it into DC power, and then the DC power passes through the inverter to convert it into AC power of corresponding frequency and voltage according to the needs of the train's electrical equipment; at the same time, the control system monitors the power parameters output by the generator in real time, and adjusts the working state of the wind turbine generator set according to the running state and power demand of the train; Step 105, energy storage and distribution, part of the electric energy is directly supplied to the electric equipment on the train, and the remaining electric energy is transmitted to the energy storage system. When the electric energy generated by the wind turbine is insufficient, or the train is in a peak power consumption stage such as acceleration, the storage system releases electric energy to ensure stable power consumption of the train; Step 106, safety and stability assurance, the speed regulating mechanism monitors the wind rotor speed in real time. When the wind rotor exceeds the set speed, the speed regulating mechanism adjusts the blade angle to change the wind rotor's efficiency in capturing airflow, thereby limiting the wind rotor speed and ensuring safe operation of the unit.

2. The active aerodynamic energy-saving method according to claim 1, wherein The wind wheel adopts a streamlined design to efficiently capture air kinetic energy.

3. The active aerodynamic energy-saving method according to claim 2, characterized in that The generator is connected to the wind wheel and is used for converting mechanical energy into electrical energy.

4. The active aerodynamic energy-saving method according to claim 3, characterized in that The speed regulating mechanism is used to ensure that the wind wheel operates stably at different wind speeds.

5. The active aerodynamic energy-saving method according to claim 4, characterized in that The tower provides stable support for the wind turbine generator set.

6. The active aerodynamic energy-saving method according to claim 5, wherein There is a special installation platform on the top of the train for installing wind turbines.

7. The active aerodynamic energy-saving method according to claim 6, characterized in that An energy storage system is also included for storing the electrical energy generated by the wind turbine.

8. The active aerodynamic energy-saving method according to claim 7, characterized in that The energy storage system is connected to the power system of the train to provide energy for the train.

9. The active aerodynamic energy-saving method according to claim 8, characterized in that, The wind turbine generator set is designed to withstand the impact of strong airflow when the train runs at high speed, and the wind turbine generator set adopts a medium-sized wind turbine generator set.