To mitigate subsynchronous control interaction (SSCI) in doubly fed induction generator (DFIG)‐based wind farm, this paper proposes a robust controller for rotor‐side converter (RSC) using fractional‐order sliding mode controller (FOSMC). The proposed FOSMC can improve robustness and convergence properties of the controlled system, thus achieving SSCI damping under various operating conditions. Impedance‐based analysis and time‐domain simulation are performed to check the capability of the designed FOSMC as compared with conventional sliding mode control (SMC) and subsynchronous damping control (SSDC). Simulation results demonstrate that FOSMC can mitigate SSCI within shorter time and effectively reduce the fluctuation range of system transient responses under various operating conditions of wind speeds and compensation levels. Moreover, FOSMC also improves system robustness against parameter uncertainties and external disturbances, which is important for safe operation of realistic wind farms.

中文翻译：

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带有分数阶滑模控制器的并网DFIG风力发电机的SSCI缓解

为了减轻基于双馈感应发电机（DFIG）的风电场中的次同步控制交互（SSCI），本文提出了一种使用分数阶滑模控制器（FOSMC）的转子侧变流器（RSC）的鲁棒控制器。所提出的FOSMC可以提高受控系统的鲁棒性和收敛性，从而在各种操作条件下实现SSCI阻尼。与传统的滑模控制（SMC）和次同步阻尼控制（SSDC）相比，基于阻抗的分析和时域仿真可以检查设计的FOSMC的性能。仿真结果表明，FOSMC可以在更短的时间内缓解SSCI，并有效减小系统在各种风速和补偿水平条件下的瞬态响应波动范围。此外，