Enabling Flexibility Services through Interoperable V2X Infrastructures: Advanced Modeling and Operational Validation in the FLEXV2X Project

The integration of Electric Vehicles (EVs) as active grid resources represents a pivotal shift towards decarbonisation. However, the implementation of effective Vehicle-to-Everything (V2X) services faces technical challenges regarding interoperability, predictive management, and battery health preservation. This work presents a comprehensive system design and research methodology developed within the framework of the FLEXV2X project, aimed at addressing interdependencies within a unified bidirectional charging ecosystem. The proposed scientific framework addresses two complementary timescales. At the device level, the study details the modelling and optimisation of bidirectional converters, focusing on control algorithms designed to ensure robust dynamic response and efficiency. Building upon this hardware foundation, the paper describes a system-level optimisation strategy. By employing open-source cyber-physical modelling, the architecture simulates complex EV-grid interactions. This layer integrates Artificial Intelligence (AI) algorithms to forecast stochastic variables such as renewable generation and fleet availability, driving a rule-based optimisation engine. This dispatching logic will also be constrained by novel battery aging models, calibrated through experimental cycling stress-tests, balancing grid flexibility services with the preservation of the vehicle’s asset value. The effectiveness of this multi-layered design is assessed through a validation roadmap involving real-world deployment of a corporate mobility hub connected to a 10 MW wind farm, and a large-scale urban car-sharing fleet.