Optimization Design And Performance Sinmulation Of Float Type Wave Generator

With the progress of society,traditional energy sources have been unable to meet human needs and social development due to shortages and pollution.The development and application of new non-polluting renewable energy sources is imperative.The ocean contains a large amount of clean energy,including the most abundant waves,and the use of ocean waves to generate electricity is one of the most important ways to develop marine energy.Based on the current research status of wave power generation devices at home and abroad,this paper designs a double-float wave generator that can convert the changing wave input into a constant angular velocity output and can be directly connected to the network.The device uses a mechanical transmission system to convert ocean wave energy into mechanical energy and then converted into electrical energy by a synchronous generator.The main research content of this article includes the following aspects:First,the overall design of this type of floating wave generator is introduced.The device mainly includes: reversing gear box;parallel mechanism;speed increasing mechanism;hydraulic speed regulating mechanism and synchronous generator.The reversing gear box converts the up and down movement of the sea wave into a single direction of rotation;the use of a hydraulic speed regulating mechanism to input the changing sea waves into the speed regulating system makes the output angular velocity a small range above or below a certain value even when fluctuations can be realized.Constant;the output angular velocity after the speed regulation is directly connected to the synchronous generator,so that the generator can output the frequency specified by the national grid connection.Second,dynamic simulation analysis of the power generation device.The two-degree-of-freedom rigid component system dynamics simulation model and the transmission system multi-degree-of-freedom torsional vibration model were established respectively.Under the two models,the motion simulation analysis of the main components was performed and compared,and then the parameters affecting the system motion were simulated to obtain the effect of each influence parameter.Based on the above model,the efficiency and power of the wave generator are simulated and analyzed.Second,the system is optimized based on dynamics.Through the influence of some parameters analyzed above on the output motion of the system,do not minimize the difference between the average angular velocity of the output shaft of the wave generator and the input synchronous generator angular velocity required for the grid connection and the difference between the maximum and minimum angular velocity after the wave generator motion is stable.To optimize the objectives,the MATLAB genetic algorithm was used to optimize the analysis of the system.Finally,the transverse vibration analysis of the float arm of the system is performed.Because the float and the float arm are the main energy absorbing structures of the system,and the float arm is also a component that mainly bears the wave force,the transverse vibration of the float arm is studied to calculate the natural frequency and response characteristics of the float arm.