基于LESO的海上风机塔架振动无源控制  

Passivity-based Control of Tower Vibration With Linear Extended State Observer for Offshore Wind Turbines

作　　者：任丽娜[1] 杨欢欢 毛晨红 刘福才[1] REN Lina;YANG Huanhuan;MAO Chenhong;LIU Fucai(Key Lab of Industrial Computer Control Engineering of Hebei Province（Yanshan University）,Qinhuangdao 066004,Hehei Province,China)

机构地区：[1]工业计算机控制工程河北省重点实验室(燕山大学)

出　　处：《中国电机工程学报》2018年第19期5854-5862,共9页Proceedings of the CSEE

基　　金：国家自然科学基金项目(6157300)~~

摘　　要：以海上永磁同步风力发电系统为研究对象,考虑风、波浪载荷对海上风机支撑结构的影响,研究塔架前后/两侧振动的控制及干扰抑制问题。将波浪载荷作为外部干扰,提出基于线性扩张状态观测器的塔架振动无源控制方法。首先,根据海上塔架振动的基本模型建立反映系统物理结构特性的端口受控哈密尔顿（port-controlled Hamiltonian,PCH）模型。然后,进行无源控制器（passivity-based controller,PBC）和线性扩张状态观测器（linear extended state observer,LESO）的设计,通过LESO对干扰进行观测,无源控制器用于实现塔架振动的抑制,并对LESO的估计能力和闭环系统的稳定性进行理论分析。最后,与线性自抗扰控制（linearactive disturbance rejection control,LADRC）策略和无源控制策略进行仿真对比,仿真结果表明提出控制策略的有效性。Considering the influence that the wind and wave loads has on the vibration of structural support of the offshore wind turbine, the problem of the tower vibration such as fore-aft and side-to-side and the interference suppression was studied, based on the offshore permanent magnet synchronous generator （PMSG）. Taking the wave loads as the external disturbance, the controller based on the Passivity-based controller （PBC） and the linear extended state observer （LESO） was proposed. Firstly, the PCH model of the tower was established based on the basic one of tower, which reflects the physical structure characteristics of the system. Then, the PBC controller and the LESO was designed, while the LESO was used to estimate and compensate the wave disturbance, the PBC was used to suppress the tower vibration. By theoretical analysis, the capabilities of LESO and the stability of closed-loop system were proved. Finally, comparing with the LADRC and the PBC, the simulation results were provided to testify validity of this developed technique.

关 键 词：海上风机 塔架前后/两侧振动 无源控制器 线性扩张状态观测器 线性自抗扰控制器 

分 类 号：TM614[电气工程—电力系统及自动化]