摘要
针对额定风速以上漂浮式海上风力机系统的输出功率稳定、浮式平台运动和疲劳载荷抑制任务目标,考虑系统非线性和模型参数摄动及风浪扰动,提出一种基于自适应超螺旋二阶滑模和干扰观测补偿的桨距角鲁棒控制方案。首先,实现漂浮式海上风力机的仿射非线性不确定系统建模;其次,构建考虑风力机额定转速和平台纵摇的滑模函数,设计控制增益自适应调节的超螺旋二阶滑模控制律;再次,采用干扰观测器补偿模型参数摄动和风浪扰动不确定项;最后,基于FAST与Matlab/Simulink在不同风浪环境下进行仿真,验证所提方案有效性和优越性。时域和频域仿真结果表明,与传统比例积分控制方案相比,所提方案对稳定风力机系统输出功率、抑制浮式平台运动及减少塔基载荷具有更好的控制效果。
Considering system nonlinearity,model parameter perturbation and wind wave disturbance,a robust pitch control scheme based on adaptive super twisting second order sliding mode and disturbance observation compensation is proposed for the objectives of output power stabilization,floating platform motion and fatigue load suppression of floating offshore wind turbine system above rated wind speed.Firstly,the affine nonlinear uncertain system modeling of floating offshore wind turbine is implemented.Secondly,a sliding mode function considering the rated speed of the wind turbine and the pitch of the platform is constructed,and a super twisting second order sliding mode control law with adaptive control gain is designed.Thirdly,disturbance observer is used to compensate the model parameter perturbation and wind wave disturbance uncertainty.Finally,the effectiveness and superiority of the proposed scheme is verified based on FAST and Matlab/Simulink under different wind and wave environment conditions.The time domain and frequency domain simulation results show that the proposed scheme has better control effect on stabilizing the output power,suppressing the floating platform motion and reducing the tower base load,compared with the traditional proportional integral control scheme.
作者
韩耀振
杨文祥
马荣琳
侯明冬
杨仁明
王常顺
Han Yaozhen;Yang Wenxiang;Ma Ronglin;Hou Mingdong;Yang Renming;Wang Changshun(School of Information Science and Electrical Engineering,Shandong Jiaotong University,Ji’nan 250357,China;School of International Education,Shandong Jiaotong University,Ji’nan 250357,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2024年第5期62-69,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(61803230)
山东省高等学校青创科技支持计划(2019KJN023)。
关键词
海上风力机
滑模控制
功率控制
干扰观测器
平台运动抑制
offshore wind turbines
sliding mode control
power control
disturbance observer
platform motion suppression
