Optimal Parameter Design for Fully Decentralized Controlled EV Chargers

As Electric vehicle (EV) adoption increases, unmanaged charging can significantly raise peak electricity demand, straining grid infrastructure and accelerating equipment degradation. Therefore, EV charging control is vital for further EV adoption. A Fully Decentralized Controlled (FDC) EV charger can dynamically regulate its charging current based on locally measured conditions; however, its charging behavior is typically influenced by its installation location along the feeder. To ensure equitable charging rights among FDC chargers installed at different feeder locations, this paper proposes an optimal parameter design for the FDC EV charger. The design and adjustment involve shifting and zooming the membership function. Comparative assessments against an FDC EV charger without optimal design are simulated. Simulation results demonstrate that the proposed optimal parameter design effectively reduces substantial disparities in charging current arising from variations in installation locations. By ensuring equitable charging rights across all FDC EV chargers, the design eliminates the necessity for centralized control systems or inter-charger communication networks, thereby streamlining deployment and lowering associated infrastructure costs.