基于载荷优化的大型风电机组μ-synthesis鲁棒控制

• 作 者: 姚兴佳 谢洪放 朱江生 刘颖明 王晓东
• 机 构: 沈阳工业大学风能技术研究所,沈阳,110023;沈阳工业大学电气工程学院,沈阳,110870
• 出 处: 太阳能学报
• 发表日期: 2017年5期
• 关键词: load reduction μ-synthesis theory individual pitch control robust performance un

基于结构奇异值μ理论,针对大型风电机组柔性结构不确定性,提出动态载荷控制系统的鲁棒控制器设计方法.考虑结构的模态参数不确定性和高阶未建模动态,通过选取适当加权函数分离出系统的不确定部分,设计独立变桨距鲁棒μ控制器,用DK迭代算法求解控制器,以使闭环系统同时满足鲁棒性和稳定性要求,利用Matlab/S4WT软件进行仿真试验验证,仿真结果表明对载荷振动有很好的抑制效果.“,”Based on the structured singular value theory a generalized synthesis framework for the uncertain vibration control system and the robust controller design method are presented in order to damp the vibration of flexible structure of large scales wind turbine.Modal parameter perturbations and unmodeled high frequency dynamics of the structure are analyzed.A robust individual pitch controller is designed.The uncertainties of wind turbine structural system that fit the μ-synthesis framework is separated by choosing weighted transfer functions.The controller is solved by DK iteration technique,and the resulting closed system has both robust stability and robust performance.The simulation results by Matlab and S4WT software showed that the method proposed is effective and the vibration of the fatigue load is damped rapidly.