Document Type : Original Article


University of Kerbala


An electric drive controller for AC microgrids with renewable energy sources is a system that controls the flow of electricity in an alternating current (AC) microgrid. The role of distributed generation in the electricity industry has been expanding in recent years. Distributed (DGs) are small, scalable units, generally with a capacity of less than 10 MW which can be connected to the grid, distribution feeders or customer levels. Nowadays, the high penetration of distributed resources in power systems is increasing. Since these units can play an important role in electricity markets and provide ancillary services for system operators, integrating these resources within power systems has been considered. Therefore, this paper focuses on modelling, designing and simulating a suitable controller to ensure AC microgrids stability and stable performance (AC M.G) in both grid-connected and islanded modes. Meanwhile, all simulations have been fulfilled in MATLAB environment. After designing the controllers and ensuring the performance of their frequency response using the bode diagram and the system step response, these controllers were used to command the voltage and current in real scenarios. After applying the controllers, the performance has dramatically improved in the voltage and current controller presence. As a result, the controller can be programmed to respond into changes in the energy supply and demand, adjusting the output of the green resources and managing energy storage systems within the microgrid. This allows the system to operate in a stable and sustainable manner, even when there are fluctuations in the energy supply or demand.


Main Subjects

  • Mohammed, M. Ali, M. Ciobotaru, and J. Fletcher, 2023.Accurate Control of Virtual Oscillator-Controlled Islanded AC Microgrids. ElectricPower Systems Research, 214(12), 10879.
  • Mohammadi, 2020. Integration of AC/DC Microgrids into Power Grids. Sustainability, 12(8), P: 1-4.
  • Mansoorhoseini, B.Mozafari, and S. Mohammadi, 2022. Islanded AC/DC Microgrids Supervisory Control: A Novel Stochastic Optimization Approach. Electric Power Systems Research, vol. 209.
  • Espín-Sarzosa, R., Palma-Behnke, and O. Núñez-Mata, 2020. “Energy Management Systems for Microgrids: Main Existing Trends in Centralized Control Architectures”, Energies, vol.13, (3), P: 547.
  • Oliveira, T., Caseiro, L., Mendes, A., and Cruz, S., 2020. “Finite Control Set Model Predictive Control for Paralleled Uninterruptible Power Supplies', Energies, vol 13, (13), P: 3453.
  • Muhtadi, D. Pandit, 2017, Nguyen, N., and J Mitra, “Distributed Energy Resources Based Microgrid: Review of Architecture”, Control, and Reliability.
  • Zhou, X.Xu, S. Tan, L. Mao, M. An, and C. Luo, 2020. “Research on Parallel Control Technology of Three-Phase Inverter Based on Multiple Proportional Resonance Controller”, Journal of Physics: Conference Series, (IOP Publishing.
  • Mortezapour, and H. Lesani, 2018. “Adaptive Primary Droop Control for Islanded Operation of Hybrid AC–DC Mgs”, IET Generation, Transmission & Distribution, vol. 12, (10), P: 2388-2396.
  • Afshar, M. Mollayousefi, S.M.T. Bathaee, M.T. Bina, and G.B. Gharehpetian, 2019. 'A Novel Accurate Power Sharing Method Versus Droop Control in Autonomous Microgrids with Critical Loads', IEEE Access, vol. 7, P: 89466-89474.
  • Dannehl, M.Liserre, and F.W Fuchs,.2010. 'Filter-Based Active Damping of Voltage Source Converters with LCL Filter', IEEE Transaction on Industrial Electronics, vol. 58, (8), P: 3623-3633.
  • Li, Y.W., 2008. “Control and Resonance Damping of Voltage-Source and Current-Source Converters with LC Filters', IEEE Transaction on Industrial Electronics, 56, (5), P: 1511-1521.
  • Mahlooji, M.H., Mohammadi, H.R., and Rahimi, M., 2018.” A Review on Modeling and Control of Grid-Connected Photovoltaic Inverters with Lcl Filter', Renewable and Sustainable Energy Reviews, vol.81, P: 563-578.
  • Shongwe, S. and Hanif, M., 2015. “Comparative Analysis of Different Single-Diode PV Modeling Methods”, IEEE Journal of Photovoltaics, 5, (3), pp. 938-946.
  • Gargoom, S. Al-Dabbagh, and M. F. Alsulami, 2020."Control strategy of electric vehicle charging stations in a renewable energy-based microgrid," IEEE Access, vol. 8, P: 150199-150212.
  • Hu, Z. Zhang, and S. Xie, "Design and optimization of a renewable energy-based microgrid with electric vehicles," Journal of Renewable and Sustainable Energy, vol. 12, no. 5, pp. 053706, 2020.
  • Yang, S. Li, H. Xue, and Y. Liu, "Optimal control of a renewable energy-based microgrid with electric vehicles and energy storage systems," Energies, vol. 14, no. 4, P. 1059, 2021.
  • Li, J. Wang, J. Liu, and C. Jiang, "Design and implementation of a power management system for a renewable energy-based microgrid with electric vehicles," Applied Energy, vol. 255, pp. 113875, 2019.
  • Li, Y. Zhao, S. Li, X. Wang, and C. Xue, 2019. "Design and control of an electric drive system for a microgrid with renewable energy sources," Energy Conversion and Management, vol. 198, P: 111989.

 K. A. Khan, A. Atif, M. Khalid, “Hybrid battery-supercapacitor energy storage for enhanced voltage stability in DC microgrids using autonomous control strategy,” Emerging Trends in Energy Storage Systems and Industrial Applications, Academic Press, pp 535-569, 2023