This paper is presenting an Adaptive Fractional Order PID (AFOPID) controller for PV connected grid system. The proposed controller is designed to harvest maximum power from the PV source. AFOPID controller contain the property of conventional PID controller, where the controller contains an adaptive property to optimize gain parameter on the basis of generator and grid side parameter in view. In the suggested work, the AFOPID controller imparted with the characteristic to get tune with particle swarm optimization to track maximum power point tracking, dc link voltage, and current control and quadrature axis modeling. Furthermore, the current control functionalities are performed through an AFOPID, where the controlling parameters are updated by measured error at every instant. The aim of this research is to attain maximum power from the PV source under varying weather conditions with minimum total harmonic distortion, which validate the performance of the proposed controller. The proposed work is compared with, FOPID, FLC, PI, GA and ACO tune FOPID controllers.

本文提出了一种用于光伏并网系统的自适应分数阶 PID (AFOPID) 控制器。建议的控制器旨在从 PV 源获取最大功率。AFOPID控制器包含传统PID控制器的特性，其中控制器包含自适应特性，可以在考虑发电机和电网侧参数的基础上优化增益参数。在建议的工作中，AFOPID 控制器具有通过粒子群优化进行调谐的特性，以跟踪最大功率点跟踪、直流链路电压以及电流控制和正交轴建模。此外，当前的控制功能是通过 AFOPID 执行的，其中控制参数通过每时每刻的测量误差进行更新。本研究的目的是在变化的天气条件下以最小的总谐波失真从 PV 源获得最大功率，这验证了所提出的控制器的性能。所提出的工作与 FOPID、FLC、PI、GA 和 ACO 调谐 FOPID 控制器进行了比较。