Performance improvement of superconducting magnetic energy storage based ACO controlled hybrid micro-grid system

Replacement of traditional energy sources with renewable energy is the present trend. This has increased the existence of microgrid, which can be used as an islanded or grid connected system. This paper discusses about the design and control of hybrid microgrid. Here a hybrid energy source combination of PV and wind energy source is introduced in the micro-grid with a Super Conducting Magnetic Energy Storage (SMES) system. The usage of SMES is more efficient than a battery system with less distortions. To reduce more distortions in the AC power connected to the grid, ant colony optimization is used to control the inverter gating signal which converts DC power from the renewable energy to AC power. This creates the system more stable compared to other storage techniques. The results are discussed with the help of THD analysis. MATLAB R2013 is used for modelling of the system.