Renewable Energy Resources and Technologies
Improved Droop Control Method for Reactive Power Sharing in Autonomous Microgrids

Babak Keyvani; Bahador Fani; Hamed Karimi; Majid Moazzami; Ghazanfar Shahgholian

Volume 9, Issue 3 , September 2022, , Pages 1-9

https://doi.org/10.30501/jree.2021.298138.1235

Abstract
  Conventional droop control method has been widely adopted for power sharing between Distributed Generators (DGs) in microgrids. However, the mismatched feeder impedance of the Voltage-Sourced Inverters (VSI) may generate reactive power sharing error during islanding operation of a microgrid. In this ...  Read More

Renewable Energy Resources and Technologies
Study of Long-Term Stability of Perovskite Solar Cells: Highly Stable Carbon-Based Versus Unstable Gold-Based PSCs

Mohammad Reza Shekari; Seyed Mohammad Sadeghzadeh; Mahdi Golriz

Volume 8, Issue 2 , April 2021, , Pages 61-73

https://doi.org/10.30501/jree.2021.240562.1132

Abstract
  In recent decade, Perovskite Solar Cells (PSCs) have received considerable attention compared to other photovoltaic technologies. Despite the improvement of Power Conversion Efficiency (PCE) of PSCs, the chemical instability problem is still a matter of challenge. In this study, we have fabricated two ...  Read More

Renewable Energy Resources and Technologies
Stability Improvement of Hydraulic Turbine Regulating System Using Round-Robin Scheduling Algorithm

Fariba Heidarpour; Ghazanfar shahgholian

Volume 5, Issue 1 , January 2018, , Pages 1-7

https://doi.org/10.30501/jree.2018.88584

Abstract
  The sustainability of hydraulic turbines was one of the most important issues considered by electrical energy provider experts. Increased electromechanical oscillation damping is one of the key issues in the turbines sustainability. Electromechanical oscillations, if not quickly damp, can threaten the ...  Read More