<p>Researchers have emphasized in several studies the importance of microgrids for efficiently utilizing renewable energy-based production systems. In this article, we examine the control of two parallel inverters powered by different renewable energy sources. Each inverter is equipped with a battery that operates during low production periods and is connected to an alternating current (AC) bus, which supplies a common load. The traditional droop, which is used to study the regulation of parallel inverters, is effective for power sharing but presents problems with stability owing to frequency and voltage fluctuations caused by fluctuating power demand. System instability may result from such aberrations. A novel type of droop control for microgrid inverters operating at different power levels is proposed, providing a solution to The problem of controlling the fair distribution of reactive and active power associated with different direct current (DC) sharing from power sources. The active and reactive power sharing between inverters is achieved through a hybrid (fuzzy logic-PI) based droop controller. The new control system was designed and simulated using MATLAB/SIMULINK and subsequently compared to a conventional droop control system under different operational situations. The simulation findings and a full comparison study are presented in this study. The findings provide quantitative evidence of the superior performance and resilience of the new control strategy compared to traditional approaches. Regardless of fluctuating load circumstances, the suggested method guarantees constant voltage and frequency levels in all operating modes.</p>

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Hybrid (Fuzzy Logic-PI) Based Droop Controller for Parallel Connected Generation Systems Incorporating Renewable Energy Sources in AC Islanded Micro-grids

  • Selma Allele,
  • Yacine Djeghader,
  • Sofiane Mendaci,
  • Omar Feddaoui

摘要

Researchers have emphasized in several studies the importance of microgrids for efficiently utilizing renewable energy-based production systems. In this article, we examine the control of two parallel inverters powered by different renewable energy sources. Each inverter is equipped with a battery that operates during low production periods and is connected to an alternating current (AC) bus, which supplies a common load. The traditional droop, which is used to study the regulation of parallel inverters, is effective for power sharing but presents problems with stability owing to frequency and voltage fluctuations caused by fluctuating power demand. System instability may result from such aberrations. A novel type of droop control for microgrid inverters operating at different power levels is proposed, providing a solution to The problem of controlling the fair distribution of reactive and active power associated with different direct current (DC) sharing from power sources. The active and reactive power sharing between inverters is achieved through a hybrid (fuzzy logic-PI) based droop controller. The new control system was designed and simulated using MATLAB/SIMULINK and subsequently compared to a conventional droop control system under different operational situations. The simulation findings and a full comparison study are presented in this study. The findings provide quantitative evidence of the superior performance and resilience of the new control strategy compared to traditional approaches. Regardless of fluctuating load circumstances, the suggested method guarantees constant voltage and frequency levels in all operating modes.