Open AccessGrid simulator for power quality assessment of micro‐grids
Author(s) -
EloyGarcía Joaquin,
Vasquez Juan Carlos,
Guerrero Josep M.
Publication year - 2013
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2012.0541
Subject(s) - harmonics , voltage , flicker , grid , inverter , power (physics) , three phase , simulation , electronic engineering , computer science , resistive touchscreen , topology (electrical circuits) , engineering , control theory (sociology) , electrical engineering , physics , geometry , mathematics , quantum mechanics , control (management) , artificial intelligence
In this study, a grid simulator based on a back‐to‐back inverter topology with resonant controllers is presented. The simulator is able to generate three‐phase voltages for a range of amplitudes and frequencies with different types of perturbations, such as voltage sags, steady‐state unbalanced voltages, low‐order harmonics and flicker. The aim of this equipment is to test the performance of a given system under such distorted voltages. A prototype of the simulator, consisting of two inverters connected back‐to‐back to a 380 V three‐phase grid and feeding a micro‐grid composed of two‐inverter interfaced distributed generators and a critical load was built and tested. A set of experimental results for linear purely resistive loads, non‐linear loads and current‐controlled inverters is presented to prove the capabilities of the simulator. Finally, a case study is presented by testing a micro‐grid.