Advancing sustainability with the integration of PV-wind system for electric vehicle charging with optimized MPPT hybrid DC-DC converter

Abstract

The accelerated adoption of electric vehicles (EVs) has improved fuel efficiency and eco-friendly transportation, yet it has also introduced challenges, notably the strain on power grids during peak hours. To address this issue, the proposed research has integrated hybrid renewable energy resources (HRESs) with EV charging. The research has focused on the fusion of hybrid energy system that has combined solar, wind and battery technologies. The novel aspect of this work has involved the implementation of an Improved zeta-cuk (IZC) converter, supported by a cascaded adaptive neuro-fuzzy inference system (ANFIS) for maximum power point tracking (MPPT). The proposed bidirectional switched inductor (SL) based improved zeta-cuk converter has enhanced system efficiency, stability and adaptability of PV-based EV charging. This setup has aimed to improve and stabilize the steady-state voltage at the converter output. Additionally, wind system utilizing doubly fed induction generator (DFIG) has been introduced. A proportional integral (PI) controller has ensured stable voltage levels across various operational scenarios. The grid system has been incorporated as a complementary power source, providing electricity when the output from RES has been insufficient. A novel adaptive hybrid control (AHC) algorithm has been developed to manage power flow and EV battery charging by switching between PV, WECS and grid power. The validation process has been carried out using MATLAB revealing a converter efficiency of 95.86%, coupled with a notable reduction in total harmonic distortion (THD) to 2.34%, confirming the effectiveness and feasibility of proposed hybrid energy system.