Comprehensive Controller Implementation for Wind-PV-Diesel Based Standalone Microgrid

• Published in: IEEE transactions on industry applications 2019-09, Vol.55 (5), p.5416-5428
• Main Authors: Rezkallah, Miloud, Singh, Sanjeev, Chandra, Ambrish, Singh, Bhim, Tremblay, Marco, Saad, Maarouf, Geng, Hua
• Format: Article
• Language: English
• Subjects: Active control; Active damping; Active filters; Algorithms; Anti-windup; Arrays; Computer simulation; Control algorithms; Control theory; Controllers; DC generators; diesel generator (DG); Diesel generators; Distributed generation; Generators; LCL filter-based virtual resistor; Maximum power tracking; Permanent magnets; Photovoltaic cells; Photovoltaic systems; point of common coupling (PCC) voltage regulation; Power control; Power harmonic filters; power quality improvement and proportional–integral (PI) controller with anti-windup; Product design; Resistors; Solar cells; solar photovoltaic (PV) array; standalone microgrid (SMG); State of charge; Synchronism; Voltage control; Wind speed; wind turbine (WT); Wind turbines
• ISSN: 0093-9994; 1939-9367
• DOI: 10.1109/TIA.2019.2928254

In this paper, a comprehensive controller of a standalone microgrid is implemented, which has three dispersed generation units based on a wind, solar photovoltaic (PV) array, and a diesel generator (DG). The power ratio variable step perturb and observe method is applied to achieve maximum power point tracking of a solar PV array and a variable speed wind turbine coupled a permanent magnet brushless dc generator without rotor/wind speed sensors. Moreover, to ensure perfect synchronization of a DG to the point of common coupling (PCC), a control algorithm is developed, which is based on in-phase and quadrature units. An active power control based on proportional-integral controller with anti-windup, is used for voltage and frequency regulation. The LCL filter based on virtual resistor, is used for power quality improvement at PCC. Simulation and test results are presented for the validation of the proposed system using a prototype of 2 kW in the laboratory.