Dynamical Operation Based Robust Nonlinear Control of DC Microgrid Considering Renewable Energy Integration

Ammar Armghan, Muhammad Kashif Azeem, Hammad Armghan, Ming Yang, Fayadh Alenezi and Mudasser Hassan
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Ammar Armghan: Department of Electrical Engineering, Jouf University, Sakaka 72388, Saudi Arabia
Muhammad Kashif Azeem: School of Electrical Engineering and Computer Science (SEECS), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
Hammad Armghan: School of Electrical Engineering, Shandong University, Jinan 250061, China
Ming Yang: School of Electrical Engineering, Shandong University, Jinan 250061, China
Fayadh Alenezi: Department of Electrical Engineering, Jouf University, Sakaka 72388, Saudi Arabia
Mudasser Hassan: School of Electrical Engineering, The University of Faisalabad (TUF), Faisalabad 38000, Pakistan

Energies, 2021, vol. 14, issue 13, 1-23

Abstract: The importance of microgrids has been acknowledged with the increasing amount of research in direct current (DC) microgrids. The main reason for this is the straightforward structure and efficient performance. In this research article, double integral sliding mode controllers (DISMCs) have been proposed for energy harvesting and DC microgrid management involving renewable sources and a hybrid energy storage system (HESS). DISMC offers a better dynamic response and reduced amount of chattering than the traditional sliding mode controllers. In the first stage, the state differential model for the grid was derived. Then, the nonlinear control laws were proposed for the PV system and hybrid energy storage system to achieve the main objective of voltage regulation at the DC link. In the later part, the system’s asymptotic stability was proven using Lyapunov stability criteria. Finally, an energy management algorithm was provided to ensure the DC microgrid’s smooth operation within the safe operating limit. The proposed system’s effectiveness was validated by implementing on MATLAB/Simulink software and comparing against sliding mode control and Lyapunov redesign. Moreover, to ensure the proposed controller’s practical viability for this scheme, it has been tested on real-time hardware-in-the-loop test bench.

Keywords: DC Microgrid; hybrid energy storage system; renewable energy; double integral SMC; DC–DC converters (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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