This article deals with a robust frequency cascaded adaptive complex filter (ACF) control for the grid interactive photovoltaic (PV) system. The incorporated control algorithm rejects lower order harmonics too unlike the conventional quadrature signal generators; thus, this control algorithm extracts accurate fundamental frequency orthogonal components of load current. The voltage source converter (VSC) acts as a distribution static compensator (DSTATCOM) when generation from the PV array is unavailable, besides injecting active power in the distribution network, and reducing reactive power loading on the utility network by mitigating harmonics in presence of generation from the PV array. Thus, the VSC utility is enhanced. This PV system performance is robust against the weak utility grid parameter variation and at load perturbation. The presented algorithm improves transient response at dynamic loading and irradiance change. The harmonic contents in distribution network voltage and utility current are reduced within the IEEE-519 standard.

中文翻译：

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电网交互式光伏系统的鲁棒频率级联自适应复滤波器控制

本文讨论用于电网交互式光伏 (PV) 系统的稳健频率级联自适应复滤波器 (ACF) 控制。与传统的正交信号发生器不同，集成的控制算法也能抑制低次谐波；因此，该控制算法提取负载电流的准确基频正交分量。当光伏阵列发电不可用时，电压源换流器 (VSC) 充当配电静态补偿器 (DSTATCOM)，除了在配电网络中注入有功功率，并通过减少发电存在的谐波来减少公用网络的无功功率负载来自光伏阵列。因此，增强了 VSC 实用程序。这种光伏系统性能对于弱的公用电网参数变化和负载扰动是稳健的。所提出的算法改进了动态负载和辐照度变化时的瞬态响应。IEEE-519 标准降低了配电网络电压和市电电流中的谐波含量。