Microgrid (MG), a localized modular power system comprising of distribution generations (DGs) and loads, acts as a single controllable unit in relation to grid. It may either operate in standalone mode or grid connected mode. It offers benefits like efficient and sustainable energy supply, reduced carbon emission, deferring extension of power distribution infrastructures, and so on. However, integration of DGs having different characteristics results in various operational challenges in a MG network. One of which is power quality (PQ) issue. Hence, in this article, impact of PQ issues in an adopted standalone MG system (comprising of solar, wind and fuel cell based DGs) is investigated in the presence of shunt active power filter (SAPF). The realization of SAPF is carried out using conventional synchronous reference frame (SRF) and modified SRF (MSRF) techniques for reference current generation, proportional integral (PI) controller, and fuzzy logic controller (FLC) for DC‐link capacitor voltage regulation and a basic hysteresis band current controller technique for generation of switching pulse for the inverter. The simulation model of conventional SRF/MSRF techniques and the proposed FLC approach based SAPF is developed under MATLAB/SIMULINK^R environment both at ideal and nonideal source condition considering inductive and capacitive load. The results obtained using proposed MSRF technique and FLC approach owing to different load scenarios is compared to that of conventional SRF and MSRF technique with PI controller. The comparative results obtained validate the superiority of proposed technique over other related to harmonics elimination and DC‐link capacitor voltage regulation.

中文翻译：

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基于模糊控制器辅助改进SRF的SAPF设计微电网电能质量评估

微电网（MG）是一种由分布式发电（DG）和负载组成的局部模块化电力系统，相对于电网而言，它是一个可控制的单元。它可以独立运行或并网运行。它提供的好处包括高效和可持续的能源供应，减少的碳排放，推迟配电基础设施的扩展等。然而，具有不同特性的DG的集成导致MG网络中的各种操作挑战。其中之一是电能质量（PQ）问题。因此，在本文中，在存在并联有源电力滤波器（SAPF）的情况下，研究了采用的独立MG系统（包括基于太阳能，风能和燃料电池的DG）中PQ问题的影响。SAPF的实现使用常规的同步参考框架（SRF）和改进的SRF（MSRF）技术进行参考电流生成，比例积分（PI）控制器和模糊逻辑控制器（FLC）进行直流链路电容器电压调节和基本的磁滞带电流控制器技术，用于为逆变器生成开关脉冲。在MATLAB / SIMULINK下开发了常规SRF / MSRF技术的仿真模型以及基于SAPF的FLC方法考虑感性和容性负载的理想和非理想电源条件下的^R环境。将使用建议的MSRF技术和FLC方法由于负载情况不同而获得的结果与带有PI控制器的常规SRF和MSRF技术的结果进行了比较。所获得的比较结果证实了所提出的技术优于其他与谐波消除和直流链路电容器电压调节有关的技术。