Optimization And Simulation Of MW-Level Doubly-fed Wind Turbine Yaw Control System

Energy, environment, human survival and development to solve the pressing problems, wind energy as a clean, renewable energy, Has been attached great importance to the world.This topic to MW doubly-fed generator yaw control system for the research background, focusing on the yaw control system on maximum capture rate of wind energy research.Doubly-fed VSCF wind turbine rated wind speed is the advantages of running, you can get more energy, in this paper, to improve the efficiency of wind turbine generators by improving the yaw control system.As the yaw control system is located under the wind direction sensor, The impact by turbulence and other adverse factors, and there are insufficient in their own precision, to cause that accuracy is not high on the wind,And when accuracy of the wind within the±150,Vane sensor can not detect the actual wind direction, Thus reducing the efficiency of wind turbine power generation, To solve the above problems,this subject is presented based on changes in wind direction yaw control system of the optimization strategy, rapidly adjust cabin yaw angle, so that the wind wheel wind generator and change the direction of the wind direction normal to always maintain consistency, to improve unit power generation efficiency, completed the yaw control system optimization.This article first to study wind turbine in yaw control system,to analysis of the factors affecting the yaw control,to introduce the structure of yaw control system, pointed out that the wind vane sensor problems,then explain double-fed wind turbine component and working principle of double-fed generator, establish the mathematical model of the output power of the Double-fed generator. According to the above theory, we designed a large range of angular displacement with vane sensor and the yaw sensor data fusion control strategies and algorithms and gyroscopes based on mountain climbing combined a small range of yaw control strategy. Finally, by MATLAB simulation software, on the output power double-fed generator is simulated, according to the simulation results and the combination of hill climbing algorithm procedures to verify the feasibility and effectiveness.