Improving Power Quality and Reducing Harmonics in Hybrid Microgrid using Interlinking Converter

Today, renewable resources have become important due to the reduction of pollution and cost compared to fossil fuels. Microgrid structure is used for better management and efficiency of these resources. In this article, improving power quality and reducing harmonics in hybrid microgrids using Interlinking converters (ILC) are discussed. For this purpose, a network backup converter has been used to improve power and reduce disturbances. The desired microgrid components include distributed generation units, AC loads, DC loads, the energy storage system (battery), and parallel connecting converters. In the hybrid AC/DC microgrid topology that is investigated in this article, there are two main converters, one is the network forming converter which is an intermediate converter and is used to control the microgrid voltage. The second converter is the VSC converter, which is placed between the DC link (including the DC microgrid and battery) and the AC micro-grid. The control system of a hybrid microgrid was implemented and simulations were carried out in MATLAB software for four different scenarios related to the active and reactive power of the microgrid. After the operation of the harmonic compensation control part in the microgrid, the THD is about 1.87% and even lower than the initial.