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    Fault control of microgrid system: A case study of Karabuk University-Turkey
    (IOP Publishing Ltd, 2020) Yusupov, Z.; Almagrahi, N.; Tursunov, O.; Kodirov, D.; Almgarbj, H.A.; Toshpulatov, N.
    In this paper Karabuk University microgrid system is introduced and fault control of microgrid is analyzed. The microgrid system of Karabuk University campus consists of diesel generator, solar PV panels, energy storage unit, critical and non-critical loads. Simulation of microgrid in both grid-connected and isolated operation modes are conducted on MATLAB/Simulink. The fault control has been implemented in the microgrid system to effectively manage of power in the system. The system is effectively disconnecting the microgrid from main grid within a microsecond after fault conditions. The distributed energy sources have been supplying the energy to load based load profile settings. From the simulation results, the developed control mechanisms provide stable operation in the microgrid system. © Published under licence by IOP Publishing Ltd.
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    Modeling and Control of Decentralized Microgrid Based on Renewable Energy and Electric Vehicle Charging Station
    (Springer Science and Business Media Deutschland GmbH, 2024) Yusupov, Z.; Almagrahi, N.; Yaghoubi, E.; Yaghoubi, E.; Habbal, A.; Kodirov, D.
    Energy scarcity, environmental pollution, and the exponential rise in demand for energy are all significant global problems. The integration of distributed energy resources (DER) into electric power systems (EPS) and the use of electric vehicles (EVs) due to low pollution has increased in recent decades. The operating reliability and efficiency of the power systems are affected when DERs and energy storage devices are integrated into a distribution network. In a different scenario, a vital step toward low-carbon mobility is the electrification of automobiles. To integrate the widespread adoption of electric vehicles into EPS, it is necessary to coordinate the combination of centralized and decentralized control of EPS at the EV grid infrastructure. In this paper, a microgrid (MG) with decentralized control of renewable energy and an EV charging station is designed and modeled for Karabuk University campus. In the proposed mathematical model, the Park transformer is applied based on injection current in the Point of Common Coupling (PCC) and using the PI controller to control active power. This technique can keep the frequency and power in both grid-connected and islanded modes, also significantly reducing the number of harmonics in the grid-connected mode. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.