东南大学学报（自然科学版）2012，Vol.42Issue(1)：55-61,7.DOI:10.3969/j.issn.1001-0505.2012.01.011
变速恒频双馈风力发电机并网的复合控制
Composite control for cutting-in control of variable speed constant frequency doubly fed wind power generator
摘要
Abstract
This paper proposes a rotor current composite control method based on the terminal sliding mode control (TSM) and extended state observer ( ESO) for cutting-in system of variable speed constant frequency doubly-fed induction generator (DFIG). TSM can make the states not only reach the manifold in finite time, but also converge along the sliding surface to the equilibria in finite time. Thus, the generator d-axis current and the q-axis current are drived to the reference values in finite time, obtaining a faster convergence and a better tracking precision. Moreover, the ESO is introduced to estimate system disturbances. The estimated value is employed for feed forward compensation against disturbances. This helps to reduce the required value of switching gain for the terminal sliding mode control method, which can reduce the chattering phenomenon of system and obtain a smooth stator voltage waveform. The simulation results show that the composite control strategy produces a better robustness against varying parameters and disturbances, the cutting-in control system has a better dynamic performance.关键词
风力发电机/双馈发电机/空载并网/终端滑模控制/扩张状态观测器Key words
wind-power generator/ doubly-fed induction generator/ no-load cutting-in control/ terminal sliding mode control/ extended state observer分类
信息技术与安全科学引用本文复制引用
周明明,李世华..变速恒频双馈风力发电机并网的复合控制[J].东南大学学报（自然科学版）,2012,42(1):55-61,7.基金项目
国家自然科学基金资助项目(61074013)、江苏省自然科学基金资助项目(BK2008295). （61074013）
