Study On Kinematics And Dynamics Of Floating Parallel Multi Float Wave Generator

With the development of science and technology,the severity of environmental problems and energy crisis has become increasingly prominent.In response to these two problems,all countries in the world are engaged in the research,development and utilization of new energy,and increase the investment in scientific research,so as to solve the environmental and energy problems with pollution-free new energy.Ocean area accounts for about 71% of the total global area.The development and utilization of ocean energy plays an important role in alleviating the energy crisis and environmental problems in China and even the world.This paper begins with the capture and utilization of wave energy in the ocean,designs a floating parallel multi float wave power generation device,which mainly captures wave energy in the ocean through parallel multi float and multi direction,uses the permanent magnet linear generator to convert the captured wave energy into electrical energy,optimizes the control strategy of the power generation system,so that the wave energy capture power and power generation power are greatly improved Rise.First of all,through the study of wave power generation devices abroad,the paper introduces the current research situation of wave power generation technology and the application of wave power generation technology in the real scene in detail.Through the comparison with domestic wave power generation technology,it summarizes the inadequacies in the research and implementation of wave power generation technology in China.In this paper,the wave power generation devices are classified and summarized by the way of power generation,and the working principle and key technology of each type of typical wave power generation devices are briefly analyzed.On this basis,a new type of floating parallel multi float wave power generation device suitable for the sea area of China is proposed.Secondly,the three-dimensional drawing software is used to model the device.Based on the model,the power generation principle and steps of the floating parallel multi float wave power generation device are described,and the design of the key structure and the selection of key components are introduced.Based on the theory of linear micro amplitude wave and Froud-Krylov hypothesis,the corresponding hydrodynamic model of float under wave force is established,and the wave energy capture power is analyzed and solved.Then,the kinematic model of the wave generator is established,and the kinematics analysis of the parallel multi float mechanism is carried out,and the expressions of its spatial position,velocity and acceleration are solved.Adams and MATLAB software are used to simulate the kinematics of the device.In order to make the wave energy generating device get higher power,the control strategy of the permanent magnet linear generator is studied based on the dual degree of freedom equivalent circuit control.The amplitude and phase of the motion are changed by the indirect control of the back electromagnetic force of the permanent magnet linear generator,and the motion frequency of the permanent magnet linear generator is adjusted according to the wave frequency to achieve resonance and eliminate the back electromagnetic force shadow to the greatest extent So as to obtain the optimal generating power.Finally,the dynamic analysis of the mechanism is carried out,the dynamic model of the system is established by the Lagrange equation method,and the forces on each hinge point of the parallel platform are simulated and analyzed by ADAMS software to study the state of each component when the wave power generation device works.Based on the finite element analysis,ANSYS is used to simulate the modes of the wave generator and its key components,and the modes and modes of each stage are obtained to avoid resonance and damage to the equipment.