Research On Guide Vane Adjustable Torque Converter For Power Generation Speed Control System

Energy is an important foundation for the progress and development of human society.At present,the main sources of human beings are still oil,natural gas and coal.With the rapid development of society,the human demand for energy is growing.However,the declining traditional energy resources and the damage to the environment have become a big problem.In this case,the world has begun to explore and study new energy sources,of which wind energy has also become a part of the new energy field.Although wind energy has the advantages of being renewable and non-polluting,the instability of wind power has also become the biggest issue of utilizing wind energy.The uncertainty of wind speed leads to the instability of the input speed and torque of the wind power generation device,which leads to the instability of the output voltage and frequency of the generator.How to make the wind power generation system be able to stabilize the output and be able to be connected to the grid has become an important direction in the field of wind power.At present,there are two ways to solve this problem,but with the development of the wind power industry,these two methods show more disadvantages and deficiencies.Therefore,a planetary gear and guide vane adjustable hydraulic torque Wind turbine speed controller.It provides a new method for the input constant speed output of wind power transmission,which has the most important theoretical significance and the value of engineering application.With the newly designed vane adjustable torque converter as the research object,the main research contents are as follows:(1)Theoretical analysis of the new wind speed governing system is made.The working principle of the whole power generation system and the working principle of the speed regulating device are expounded.At the same time,the speed relationship,torque relationship and efficiency of the speed governing system are analyzed.It is concluded that the performance of the speed regulating system is only related to the performance of the torque converter.Finally,the structure,working principle and characteristics of torque converter are introduced.(2)The structural design of the adjustable vane torque converter is carried out.The vane adjustable hydraulic torque converter mainly consists of a pump wheel,a turbine,a guide wheel and a guide vane adjustment mechanism.First,the shape of the circular circle is determined by the characteristics of the adjustable hydraulic torque converter,and then a reference torque converter is selected,and the parameters of the circular circle are obtained by the similar design method.Then,the blade of the vane adjustable hydraulic torque converter working wheel is designed by using the equal angle projection method.Because the guide vane of the adjustable vane of the guide vane needs to be rotated,a simpler and more precise guide vane adjusting mechanism is designed.Finally,a three-dimensional model of a guide vane adjustable hydraulic torque converter was established.(3)The fluid simulation analysis of adjustable vane torque converter is carried out.The flow path model of adjustable torque converter with guide vane under different guide wheel opening is extracted,and the flow path model is meshed by using HyperMesh software.Then using fluent software to carry out fluid simulation of different flow channels to obtain the torque converter torque at different opening degrees,and through the formula to calculate the torque converter turbine speed range,verifying that the speed range to meet the design requirements,and obtained The relationship between the guide wheel opening and the rotor speed.Finally,the flow fields of the pump wheel,turbine wheel and guide wheel were analyzed respectively,and the status of the overall flow field was analyzed.(4)The flow-solid coupling.simulation of the guide blade regulator is carried out.The simulation results of the pilot blade adjustable hydraulic torque converter are simulated by fluent,and the flow and solid coupling simulation of the guide blade regulator is carried out.The maximum stress of the guide blade adjustment mechanism is obtained.It is compared with the material characteristics,and the strength is not satisfied to meet the design requirements.Then,the structure of the guide vane adjustment mechanism is optimized,and the fluid-solid coupling simulation is performed again to obtain the maximum stress of the guide vane adjustment mechanism.Compared with the material properties,it is verified that the strength meets the design requirements.Finally,a servo motor is selected for the guide vane adjustment mechanism through the maximum torque of the guide vane adjustment mechanism.