Research On Control Strategy And Experimental Platform Design Of Wind Turbine Pitch Control System

The energy and the environment are the chiefly urgent problem which the human must be faced. Now various countries have attached important to full use of wind energy which can be regeneration, and no contaminate and low cost. And the research and development of highly effective and dependable wind turbine system have become the hotspot and difficulty spot in the energy industry. With the importance of the wind turbine system, and localization of the wind turbine equipment, enhance of the proprietary intellectual property, it's necessary to deeply research the wind turbine pitch control system.Pith control wind turbine adjust the setting angle of blade with the wind speed's changing, when the wind speed below rated speed, it can acquire the wind energy to a greatest extent, when the wind speed above rated speed, it can adjust the setting angle to restrict the input power of the wind turbine. Because of simple structure and reliable control performance of Electromotion pitch control servo system, so it became more and more popular. For the need of the engineering research, in this paper, first build the math model of the electromotion pith control servo system, and in this process use reasonable engineering approximate. In order to solve the approximately parameter, slowly time variant and environment disturbance of the electromotion pitch control servo system, because the model reference adaptive control strategy have simply control structure and can be easily engineering implementation, so introduce the Narendra error model's model reference control strategy which based on Lyapunov stable theory. This system can adjust controller parameter with the change of the object, so the system output can have perfect performance. Next, because the wind turbine have more reliable demand of the pitch control system, and inhibit field testing. So according with my lab's existence condition, establish a experimental platform, for test the feasibility of control strategy.And at the end build a simulated model in the Matlb/Simlink software, the simulated result indicate that when the model parameter have changed in a scope or there have wind random disturbance, the model reference control strategy can restrain parameter change and environmental disturbance, so it can ensure favorable tracking performance.