摘要
提出了一款基于扰动观测器的分数阶比例-积分-微分(Perturbation observer based Fractional-order Proportional-Integral-Derivative,PoFoPID)控制策略,以在永磁同步发电机(Permanent Magnetic Synchronous Generator,PMSG)高于额定风速的工况下,通过变桨距角控制,将发电机输出功率维持在其额定值附近。首先,将PMSG的系统非线性、参数不确定性和未建模动态等聚合为新的扰动,并采用扰动观测器对其进行在线估计。然后,设计分数阶PID控制对该扰动估计进行实时完全补偿,以提高系统动态特性。此外,PoFoPID控制器参数通过群天牛算法寻优获得,避免了常规PID控制参数依赖人工整定的缺陷。斜坡风速、随机风速和参数不确定算例下的仿真结果表明,与矢量控制、基于扰动观测器的PID控制和反馈线性化控制相比,所提PoFoPID控制具有满意的输出功率稳定效果。最后,基于dSpace进行的硬件在环实验(Hardware-in-loop,HIL)验证了所提方法的硬件可行性。
This paper proposes a Perturbation Observer-based Fractional-Order Proportional-Integral-Derivative(PoFoPID)control for a Permanent Magnetic Synchronous Generator(PMSG),through variable pitch control,to maintain captured power at its rated value when the wind speed is higher than the rated value.First,the system nonlinearities,parameter uncertainties,and unmodelled dynamics are aggregated into the new perturbation,which is estimated online by the perturbation observer.Then,the fractional-order proportional-integral-derivative control is employed to fully compensate the perturbation estimate,such that the dynamic performance can be significantly improved.Moreover,Grouped Beetle Antennae Search(GBAS)is applied to optimally tune the PoFoPID controller parameters.This avoids the defect of conventional PID control parameters which depend on manual tuning.Case studies,e.g.,ramp wind,random wind,and parameter uncertainty,demonstrate that PoFoPID has stable effects of output power in comparison to that of vector control,perturbation observer based proportional-integral-derivative control,and feedback linearization control.The feasibility of implementation of the proposed method is verified by a hardware-in-loop test(HIL)based on dSpace.
作者
王龙
郭寅远
杨博
赵鲲鹏
吴鹏
李响
WANG Long;GUO Yinyuan;YANG Bo;ZHAO Kunpeng;WU Peng;LI Xiang(Zhengzhou University of Aeronautics,Zhengzhou 450046,China;Xuchang KETOP Testing Research Institute Co.,Ltd.,Xuchang 461000,China;Faculty of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,China)
出处
《电力系统保护与控制》
CSCD
北大核心
2021年第20期92-103,共12页
Power System Protection and Control
基金
国家自然科学基金项目资助(61963020)
河南省科技攻关计划项目资助(212102210254)。
关键词
永磁同步发电机
桨距角控制
扰动观测器
分数阶PID
permanent magnetic synchronous generator
pitch control
perturbation observer
fractional-order PID
