A Novel Multi-Objectives Sliding Mode Control for Bidirectional EV Charging Stations

This paper proposes a robust control technique for bidirectional electric vehicle (EV) charging stations. The proposed technique aims to support both grid-to-vehicle (G2V) and vehicle-to-grid (V2G) applications. The charging station is designed based on T-type three-level AC-DC converter connected back-to-back with a three-phase bidirectional interleaved DC-DC converter (BIDDC). Moreover, a single sliding mode control (SMC) algorithm is proposed to control the entire structure under various abnormal conditions including sudden load change, parameters uncertainties, unbalanced grid voltages, and voltage sag and swell. The proposed system is implemented and tested in MATLAB/Simulink environment. Different investigations are conducted to prove that the proposed controller can successfully meet the charging station design requirements.