Stability Enhancement of Isolated-Microgrid Applying Solar Power Generation Using SMES Based FLC

Abstract

Energy storage systems (ESSs) are considered the most effective method to enhance the consistency of microgrids (MGs) during isolated operation mode. ESSs rule has become clear with the existence of renewable energy sources in the MG due to the intermittency nature of these resources. The MG faces different challenges during isolated mode of operation, such as load voltage fluctuation on the demand response, MG steadiness while supplementing of distributed generation (DG), and power flow instability. This paper proposes a robust control technique for superconducting magnetic energy storage (SMES) in isolated mode of operation of MG with the insertion of solar power generation (SPG) and the unexpected loading event as well. A fuzzy logic controller is used to control the power flow between the SMES and MG throughout regulating the bi-directional dc-dc converter duty cycle. Obtained results show the effectiveness of the proposed control scheme for mitigating the MG frequency, voltage and load current during SPG insertion and a sudden loading event.