直驱型永磁风力发电机的最大风能捕获影响因素分析

摘要

针对直驱型风力发电系统,利用Matlab/Simulink仿真软件建立风力机模型,通过对风速、桨距角、叶尖速比、发电功率的仿真研究,分析影响风能捕获的因素,研究实现最大风能捕获的控制策略.仿真结果表明:在额定风速以下,通过发电机的转速调节获得最优叶尖速比,在额定风速以上,调节桨距角实现发电机稳定在额定功率处,从而实现最大风能捕获.%Aimed at the direct driver permanent wind power system, the wind power model is established based on Matlab/ Simulink. The wind speed, the blade pitch angle, tip-speed ratio, generate power are researched to analyse the influence factor of capturing the wind power and the control theory on the maximum wind power. The simulation results show that the generator speed is adjusted to earn the best tip-speed ratio under the rated wind speed, above the rated wind speed, the blade pitch angle is regulated to stable the generator to the rated power for the maximum wind power capture.