Voltage/Frequency Control of Isolated Unbalanced Radial Distribution System Fed from Intermittent Wind/PV Power Using Fuzzy Logic Controlled-SMES

Nowadays, the world is directing to the renewable energy sources to generate electricity. However, these sources have Intermittent energy nature which leads to fluctuations in the voltage and frequency, so it became necessary to use controlled energy storage units. This paper addresses an isolated unbalanced three-phase radial distribution system fed from wind energy conversion system (WECS) of squirrel cage induction generator (SCIG) and photovoltaic (PV) power for energy injection. Superconducting magnetic energy storage (SMES) units have been used as energy storage system to mitigate the intermittent power generated from renewable energy sources. Fuzzy logic controller is used to control the charging/discharging of SMES. MATLAB/Simulink package is used to demonstrate the system, WECS, PV, and SMES. The simulated results illustrated the ability the fuzzy logic controlled-SMES to mitigate the intermittency of power generated from WECS/PV that helps to control the frequency and voltage of the studied system.