Novel Energy Management System for Microgrid Supplied by Various Renewable Energy Sources
Cholleti Harish, M. Sai Veerraju, Edrees Yahya Alhawsawi, Sai Krishna Kondoju, Sumit Pundir, R. Padmavathy, Tellapati Anuradha Devi, Siva Ganesh Malla
Abstract
A novel energy management system is necessary for ensuring optimal stability, reliability, operational efficiency, and cost-effectiveness in the operation of any standalone Microgrid that utilizes renewable energy sources. In generally, multiple power generation units located at various places are connected to Load Bus (LB). Hence, this study introduces a proficient energy management method developed for a Microgrid that integrates photovoltaic (PV) arrays, permanent magnet synchronous generator (PMSG)-based wind turbines (WTs), and energy storage solutions such as batteries and fuel cell (FC) - Aqua-Electrolyzer (AE). A sliding mode controller (SMC) is incorporated to facilitate the operation of the boost circuit as a maximum power point tracker (MPPT) for WTs and Perturb & Observe (P&O) is implemented for PV arrays on boost converters. The study is examining three wind power plants and three solar plants to develop a 1 MW Microgrid. Each power plant consists of multiple wind turbines and PV arrays. Additionally, each wind farm and solar plant is equipped with its own inverter to ensure synchronization at the LB. The controllers have been meticulously engineered to maintain power quality at the LB for both linear and nonlinear singlephase and three-phase loads. By opting for a compact battery size for transient operations, the overall system costs are reduced, while the AE-FC configuration operates under steadystate conditions. Hardware - in the - Loop (HIL) is established to present various results on OPAL-RT platform supported by MATLAB.