Hierarchical Proactive Control Based Grid-Forming Energy Router for Industrial Microgrid
Zixuan Zheng (Sichuan University)
Shijie Li (Sichuan University)
Chunjun Huang (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Yunzhu Chen (Sichuan University)
Junhao Ma (Sichuan University)
Mingshun Zhang (Sichuan University)
Xianyong Xiao (Sichuan University)
Jie Ren (Sichuan University)
Qiang Fu (Sichuan University)
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Abstract
Energy routers present a viable option for harvesting renewable energy sources (RESs) and ensure dependable electricity provision in industrial microgrids. This paper presents a multi-functional, grid-forming energy router (GFMER), accompanied by a hierarchical proactive control approach. The lower-layer controller handles the coordination strategies among photovoltaic (PV) systems, battery energy storage units (BESU), and DC/AC converters. In this layer, an optimized multi-objective droop control mechanism is presented to proactively regulate AC grid-side voltage imbalances and deviations. Meanwhile, the upper-layer control is deployed to maintain the DC bus voltage, and a novel power allocation module has been designed to enhance the dynamic transient support for grids. The effectiveness and practical value of this proposed methodology have been validated through MATLAB/Simulink and hardware-in-the-loop (HIL) experiments.