Sliding Mode Control of DFIG Wind Turbines with a Fast Exponential Reaching Law
Sliding Mode Control of DFIG Wind Turbines with a Fast Exponential Reaching Law
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DOI：
10.3390/en10111788
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发表时间：
2017-11
期刊：
影响因子：
3.2
通讯作者：
Linyun Xiong;Penghan Li;Hao Li;Jie Wang
中科院分区：
文献类型：
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作者：
Linyun Xiong;Penghan Li;Hao Li;Jie Wang
提出了一种基于快速指数趋近律（FERL）的双馈感应发电机滑模控制方法。所提出的基于FERL的滑模控制器能够在很大程度上减少滑模控制中存在的抖振现象。同时，引入自适应增益，加快了到达阶段的速度.将该方法应用于基于双馈风力发电系统的直接功率控制中。基于FERL的DPC方法进行了测试，在Matlab/Simulink的不平衡的电网电压，电网故障条件和高度不稳定的风速伴随着实验研究的情况下进行的仿真。仿真和实验结果表明，所提出的控制方法在有功/无功功率跟踪和直流母线电压维持方面具有更好的性能。
This paper proposes a novel sliding mode control (SMC) technique for doubly fed induction generators (DFIGs) based on the fast exponential reaching law (FERL). The proposed FERL-based SMC is capable of reducing to a large extent the chattering phenomena existing in the sliding stage. Meanwhile, the reaching stage is accelerated with the introduction of an adaptive gain. The proposed method is employed in a DFIG-based wind energy conversion system (WECS) for direct power control (DPC). The FERL-based DPC approach is tested with simulations conducted in Matlab/Simulink under the scenarios of unbalanced grid voltage, grid fault conditions and highly unstable wind speed accompanied by an experimental study. The simulations and experimental results reveal the better performance of the proposed control method in active/reactive power tracking and dc-link voltage maintenance.