DC-Bus Voltage Control of MPPT-based Wind Generation System Using Hybrid BESS-SMES System for Pulse Loads in Ship Power Applications

Renewable energy systems (RESs) have grown to be a more economical and eco-friendly option for isolated applications such as ship where the grid's energy cannot be delivered. However, the presence of RESs has a significant challenge since the generation mainly depends on meteorological conditions. Moreover, the ship applications contain pulsed load which cause high power pulsation, voltage drop, and instability in the overall system. This paper proposes a robust hybrid energy storage system (HESS) with an effective energy management. Besides, extracting the maximum generated power and regulating both the DC-bus and AC-bus voltages under different conditions such as changing the load demand, and different unsteady meteorological conditions. The HESS consists of battery energy storage system (BESS) and superconducting magnetic energy storage (SMES). The HESS is able to improve the stability of the DC-bus during the pulse load rather than the BESS only and SMES only. The performance of the proposed system with its control strategies are verified by test results.