摘要
海面覆冰载荷是寒冷地区海上风电设计和运营中需要考虑的重要因素。该文建立风扰动及海面覆冰扰动下海上风电机组的T-S模糊增量模型;采用分布补偿控制率,通过控制桨距角增量以达到保持风电机组功率稳定、降低海面覆冰载荷影响的控制目标,基于Lyapunov稳定性理论,利用线性矩阵不等式(linear matrix inequality,LMI)方法求解相关增益,完成模糊状态观测器及模糊状态反馈控制器的设计,设计过程中考虑H∞性能指标以减少风扰动及海面覆冰载荷扰动对系统的影响。仿真结果表明,所设计的模糊状态观测器能够准确跟踪机组运行状态;所设计的降载控制器可有效降低风扰动及海面覆冰扰动对系统动态性能的不利影响,使风电机组功率及塔顶位移保持在较为稳定的范围内。
Ice load on the sea surface is an important factor to be considered in the design and operation of offshore wind turbines in cold regions.In this paper,a T-S fuzzy incremental model of offshore wind turbines under wind and ice disturbances is established.The distributed compensation control method is used to control the pitch angle increment to maintain the power stability of the wind turbines and reduce the influence of ice load on the sea surface,and the linear matrix inequality(LMI)method is used to solve the correlation gain based on the Lyapunov stability,so that the design of the fuzzy state observer and the fuzzy state feedback controller is completed,and the H∞ performance index is considered in the design process to reduce the influence of wind and sea ice load disturbance on the system.The simulation results show that the designed fuzzy state observer can accurately track the operating state of offshore wind turbines;the designed load shedding controller can effectively reduce the adverse effects of wind and sea ice disturbance on the system dynamic performance;the power of the wind turbine and the displacement of the tower top can be maintained within a relatively stable range.
作者
刘亚娟
孙荷雨
宋子秋
任鑫
房方
LIU Yajuan;SUN Heyu;SONG Ziqiu;REN Xin;FANG Fang(School of Control and Computer Engineering,North China Electric Power University,Changping District,Beijing 102206,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2023年第16期6320-6331,共12页
Proceedings of the CSEE
基金
国家重点研发计划项目(2020YFB1506602)
国家自然科学基金(面上项目)(62273144)
华能集团总部科技项目(HNKJ20-H88)。
