Performance Evaluation of Power Quality in Shipboard Microgrid under Different Working Conditions

Environmental pollution and fossil fuel usage have attracted attention and opportunities in transportation, particularly in the marine industry. The rapid advancement of solar technology and the corresponding cost reduction have allowed it to incorporate solar photovoltaic (SPV) systems into maritime vessels. The intermittent nature of SPV necessitates using an energy storage system (ESS). ESS, such as a battery, is more effective as it caters to high energy density fluctuations. Local nonlinear loads, such as radars, and sonars, cause power quality to deteriorate. Because of this, an enhanced fractional least mean square (EFLMS) controller is utilized to enhance the power quality of the shipboard microgrid. Modified double second order generalized integrator (MDSOGI) based phase-locked loop (PLL) is used for calculating the phase angle and frequency. In this paper, a microgrid structure consisting of an SPV array, a diesel generator (DG), and a battery is modelled. The power management system (PMS) is established for the scheduling of the generations and the loads, so minimal DG utilization. The analysis of the ship microgrid under various operating conditions is performed in the MATLAB/Simulink platform.