Research On Mechanical Frequency Pumped Triboelectric-Electromagnetic Hybrid Generator

The development of society has led to global climate warming and a shortage of fossil fuels,and humanity needs to explore renewable energy to cope with this crisis.Among them,wind energy has huge reserves and broad prospects,which is a way to solve the energy crisis.The low density and low frequency of wind energy are the obstacles to its development.Continuously exploring new technologies to more effectively collect wind energy is the direction of research on wind energy collection.In recent years,triboelectric nanogenerator has been studied by many scholars as a new technology.Triboelectric nanogenerator has a wide range of applications in micro and nano energy,self powered sensors,blue energy and high-voltage power supply,covering the fields of medicine,wearable electronics,flexible electronics,safety,human-computer interface and environmental science.Among them,micro and nano energy capture has the advantage of capturing high entropy energy,providing a new way for wind energy capture.In order to collect low-frequency wind energy efficiently,this paper proposes a mechanical frequency pumped triboelectric-electromagnetic hybrid generator based on the principles of triboelectric nanogenerator and electromagnetic generator.The generator adopts a multi nose cam mechanism to achieve mechanical frequency increase,forming a mechanical frequency pump.At the same time,the structure converts rotary motion into linear motion,enabling the triboelectric nanogenerator module to achieve a vertical contact separation mode,and reducing the wear of friction materials.Integrate alternating magnetic field on the active component to form an electromagnetic generator module.The comprehensive design method proposed in this article provides a new approach and technical means for capturing wind energy,which has exploitable application value.The main research content is as follows:Firstly,the theoretical basis of the triboelectric nanogenerator,namely Maxwell displacement current,is described,the basic mode and capacitance model of the triboelectric nanogenerator are introduced,and the electrical theory of the vertical contact separation mode is described.Explain the theoretical basis of electromagnetic generators,namely Faraday’s law of electromagnetic induction,and analyze the conversion theory between wind energy and electrical energy.Then,three-dimensional modeling of the experimental prototype is carried out.As a triboelectric nanogenerator module,the follower is attached with friction materials inside and outside,collecting the energy of the reciprocating full stroke.The active component serves as an amplification unit and integrates an electromagnetic generator module.The working principle and mechanism of the prototype were explained,as well as the simulation analysis of the physical field.The simulation results showed the differences in electric potential and changes in magnetic flux when the power generation unit was in different states.Finally,an experimental prototype was developed,an experimental testing system was built,and experimental testing and application demonstrations were conducted.By analyzing the relationship between the frequency increasing unit and the power generation unit,the impact on output performance is studied.The results show that the output electrical signal of the triboelectric nanogenerator module is six times of the original,and the charging speed and average charging power of the module are increased by 3.6 times under the action of the frequency increasing element.When the 100 μF capacitor is charged to 1.50 V after the electromagnetic generator module is integrated on the driving part,the overall charging speed of the prototype is 1.58 times that of the triboelectric nanogenerator module.When the input speed is 100 rpm,the output of the triboelectric nanogenerator module is 420 V,27 μA,and the peak power is 1.75 m W.The output of the electromagnetic generator module is 1.82 V,1.45 m A,and the peak power is 0.58 m W.The durability test of the triboelectric nanogenerator module shows that the output signal attenuation rate is only1.3%,showing good stability.Under the simulated wind energy environment,the prototype lights up 640 light-emitting diodes,which can also supply energy for the temperature hygrometer.