Independent control of rectifiers connected to SMES in AC loop microgrid system

The authors propose microgrid system combining photovoltaic (PV), wind turbine (WT) and Superconducting Magnetic Energy Storage (SMES). In the microgrid system, not to have a big influence on the main grid, it is necessary to make power supplying from the grid stable and lessen power flowing to the grid. The aim of this paper is to shave peak power from the main grid and to control power flow in the loop power system by introducing the microgrid with SMES. Two thyristor rectifiers control SMES I/O power to match load demand and PV/WT supply power. We prove that two rectifiers can control SMES and proposed microgrid system has little influence on the grid. The system was simulated by using MATLAB/Simulink.