风机模拟器研究

Study of Wind Turbine Systems Simulator

应用功率谱密度和信息熵等方法对自然风的频域特性和随机性进行了分析,以统计模型参数分析和蒙特卡罗方法为基础,结合风机的转距特性,应用随机模拟技术,生成随机风速,模拟出风机在随机风速下的转矩变化情况,并据此控制机电随动伺服装置,模拟风机在自然风规律下的运行特征,作为风力发电系统的风机输入。仿真和实验验证表明,新型的风机模拟器可以更好地模拟真实风机在随机环境下的动态特性。

Nature wind stochastic property and frequency domain properties such as power spectrum and information entropy are analyzed by the method of stationary random processes. Based on analytical parameter of wind model and Monte Carlo method, a novel dynamic wind machine simulator is designed. As the torque property of turbine, Monte Carlo method is applied to accurately simulate torque in random wind speed with statistics law of wind speed distribution. According to the calculated torque value, the servo mechanism is controlled to simulate the running behavior of turbine in nature. The correctness was verified by simulations and experiments. The results show that the simulator has excellent ability to simulate dynamic character.