Frequency regulation of an islanded microgrid using integral sliding mode control

Abstract

This paper investigated integral sliding mode controller (ISMC) to regulate the frequency of an islanded AC microgrid (MG) comprising distributed generators such as diesel engine generator (DEG), micro turbine(MT), fuel cell (FC), and energy storage system(ESS). The performance of MG has been closely examined under the action of fluctuated wind power and variable load perturbation. The results obtained with ISMC are compared with conventional sliding mode controller (SMC) and Linear Quadratic Regulator (LQR) controller. The effectiveness of the proposed ISMC is conformed against random wind power perturbation. The obtained results show the supremacy and reliability of the developed ISMC in stabilizing frequency deviation of the islanded MG.