摘要
针对双馈风力发电机(DFIG)运行过程中因电机参数摄动以及电网电压突变等不确定因素对控制系统的影响,提出一种扩张状态观测器(ESO)与模型预测直接功率控制(MPDPC)相结合的控制策略。首先分析了传统MPDPC中存在的系统耦合项、模型误差及外部扰动等对控制系统的影响,为了减小此影响,应用ESO进行相关参数估计。在此基础上,结合模型预测控制理论建立了功率预测数学模型。在不同工况下进行了仿真实验并和传统MPDPC进行比较,结果表明所提控制策略具有较强的鲁棒性和抗干扰能力。
To address the impact of uncertainties such as motor parameter perturbations and sudden changes in grid voltage on the control system during the operation of doubly-fed induction generator(DFIG),a control strategy combining extended state observer(ESO)and model predictive direct power control(MPDPC)is proposed.Firstly,the effects that system coupling terms,model errors,and external perturbations present in the traditional MPDPC have on the control system are analyzed,and in order to reduce this effect,dilated ESO was applied for the estimation with relevant parameters.On this basis,a mathematical model of power prediction was established by combining model predictive control theory.Through simulation experiments under different working conditions and comparison with traditional MPDPC,the results show that the proposed control strategy has strong robustness and anti-interference ability.
作者
王豪
董锋斌
张丽
贺超
白小靖
WANG Hao;DONG Fengbin;ZHANG Li;HE Chao;BAI Xiaojing(School of Electrical Engineering,Shaanxi University of Technology,Hanzhong 723000,China;Xi’an Branch of New Energy Sources Co.,Ltd.of China Power Engineering Consulting Group,Xi’an 710032,China)
出处
《陕西理工大学学报（自然科学版）》
2024年第6期18-26,共9页
Journal of Shaanxi University of Technology:Natural Science Edition
基金
陕西省自然科学基础研究计划项目(2023-JC-YB-442)。
关键词
双馈风力发电机
扩张状态观测器
模型预测直接功率控制
鲁棒性
doubly-fed induction generator(DFIG)
extended state observer(ESO)
model predictive direct power control(MPDPC)
robustness
作者简介
通信作者:董锋斌(1973-),男,陕西周至人,博士,副教授,主要研究方向为电力电子与电力传动。
