ESOGI-OLCFLL Control Algorithm for Solar PV and PMBLDC Based Wind Generation Microgrid with Utility Synchronization

摘要

The synchronization of a microgrid to the utility without power deviations/fluctuations is an important issue. To facilitate this implementation, the control strategy enhanced second-order generalized integrator open-loop compensator frequency locked loop (ESOGI-OLC-FLL) is used to meet the standards for connection to the grid. In this work, renewable energy sources (RES) based microgrid is proficient in eliminating the stirring current/voltage abnormalities due to phase/frequency misalignment throughout the changeover course. This microgrid combing solar PV (Photovoltaic) generation, wind generation using PMBLDCG (Permanent Magnet Brushless DC Generator) with storage system is working in both standalone and grid-connected modes while feeding local loads uninterruptedly. The implemented control takes into account estimation of load voltage respective phases of synchronization for secure and smooth synchronization of the microgrid but also estimates fundamental component of current for finding out reference grid current so as to provide power quality as per IEEE standard-519. The microgrid simulation is performed on Matlab 2015b/Simulink platform. Simulation results are compared with previously reported techniques, which reveal the efficiency and precision of the executed algorithm in regulating frequency and voltage of the microgrid under load and generation perturbation.