Research On Wind Generator Based On The Principle Of Contact Electrification

Wind energy is considered as an environmentally friendly renewable energy because of its inexhaustible and endless characteristics.Triboelectric nano-generators(TENGs)based on the principles of tribo-electrification and electrostatic induction are a new type of energy acquisition method,which has the characteristics of the high output voltage,simple structure and low cost.A novelty wind generator based on the contact electrification and electrostatic induction effects working in compound motions of vertical contact-separation and in-plane sliding is proposed and fabricated.Several parameters are considered and their influence on the output performance of generator is analysed.Finally,the ANSYS software is used to simulate the deformation behaviour of the single pair of friction parts during the contact process,and the average equivalent stress value of the contact surface at the maximum contact area at different speeds is obtained.The specific work and the results are as follows:Firstly,the advantages and significance of wind power generator based on the principles of triboelectrification and electrostatic induction are expounded.The two novel wind power generators are designed.The structure of the prototype of the wind power generator is determined by the output performance testing and optimisation analysis and the components of the prototype are made by nylon 66.The working mechanism of the wind power generator is studied systematically,and the electrical output performance of the single friction part is tested.Besides,the effect analysis of single friction pair for external load charging is carried out.The results show that the power density can reach 347 mW/m~2,the current density can reach 6.13 mA/m~2,and the internal resistance of the device is about 25 M?.The 60 serial-connected commercial LEDs can be lighted instantly when the speed is 300 rpm.Secondly,the ANSYS software is used to simulate the deformation behaviour of the single pair of friction parts during the contact process,and the average equivalent stress value of the contact surface at the maximum contact area at different speeds is obtained.The pairs of friction components,rotating speed and environment relative humidity on the output performance are systematically studied.Thirdly,The experimental study found that with the increase of the logarithm of friction parts,the time required for capacitor charging to reach 1 V voltage is decreasing linearly,but after six pairs of friction parts,the time required for capacitor charging is stable.For four pairs of friction components at 240 rpm,the 100 serial-connected commercial LEDs for the UJS logo can be instantly lighted up.The output performance of the device has no obvious change after 48 hours of operation,indicating that the device has excellent stability.