In this paper, a low computational, robust nonlinear feedback control is proposed as independent distributed generation controller (IDGC) for doubly fed induction generator (DFIG) based wind power generation system (WPGS). WPGS integration as distributed generation (DG) to grid point of common coupling (PCC) is reflecting high power loss profile in terms of low frequency oscillations under grid operational contingencies and have high instability hazard under unbounded uncertainties like unintentional islanding operation. Thus, to improve the stability margin of DFIG‐WPGS integration fast DG dynamic relations are obtained, where instantaneous active‐reactive power (P‐Q) formulation is proposed to avoid unnecessary phase locked loop (PLL) angle (ω) estimation. The feedback path is designed with proposed finite time adaptive backstepping sliding mode control (FTABSMC) for IDGC operation according to ISA‐95 standards. The FTABSMC is ensured with bounded/unbounded uncertainty handling capability by incorporating backstepping based dynamic error profile depletion and with enhanced stability margin by finite time sliding surface based error trajectory to equilibrium. Further, the adaptive sliding surface estimation is proposed in terms of dynamic uncertainty (energy fluctuation) for robust unbounded uncertainty handling. The stability improvement is established with small‐signal (SS) based closed loop analysis of considered DFIG‐WPGS. The uncertainty handling capability is presented thought rigorous case studies in MATLAB based simulation environment and TMS 320 digital signal processor (DSP) based processor‐in‐loop (PIL) validation.

中文翻译：

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有限时间自适应反步滑模控制，用于基于瞬时有功-无功功率动态的DFIG风生成，以提高电网稳定性

在本文中，提出了一种低计算量，鲁棒的非线性反馈控制，作为基于双馈感应发电机（DFIG）的风力发电系统（WPGS）的独立分布式发电控制器（IDGC）。WPGS集成为分布式发电（DG）到公共耦合点（PCC）的电网点，这反映了电网运行意外情况下低频振荡方面的高功率损耗曲线，并且在无限制的不确定性（如无意孤岛运行）下具有很高的不稳定风险。因此，为了提高DFIG-WPGS集成的稳定性裕度，可以获得快速的DG动态关系，其中瞬时有功-无功功率（P - Q为了避免不必要的锁相环（PLL）角度（ω）估计，提出了公式。反馈路径采用建议的有限时间自适应反推滑模控制（FTABSMC）设计，用于根据ISA-95标准的IDGC操作。通过结合基于反推的动态误差分布损耗，并通过有限时间的基于滑动面的误差轨迹达到平衡，增强了FTABSMC的有/无界不确定性处理能力。此外，针对动态鲁棒性（能量波动）提出了自适应滑动表面估计，以进行鲁棒的无穷不确定性处理。通过考虑DFIG-WPGS的基于小信号（SS）的闭环分析来确定稳定性。