Abstract
Currently, mobile chargers (MCs) are gaining popularity owing to their flexibility and the potential to solve the widespread issue of chargers being occupied after the charging process has finished, due to delayed departures of electric vehicles (EVs). In this study, we investigate the adoption of MCs in the EV parking and charging system (EVPCS) and demonstrate its costcompetitiveness through comparison with fixed chargers (FCs). First, we propose a modified M/M/n/K queueing model with two-phase services to capture the EVs’ dwell-after-charging behavior. Then we present the steady-state analysis with a matrix analytical method to analyze the properties of the proposed models. To evaluate and compare the performances of these two types of charging facilities, several key measures like blocking probability, average queue length and delay, and chargers’ utilization rate are derived, and extensive experiments exploring diverse scenarios are obtained. Furthermore, analytical formulas have been developed to approximate the two-phase queueing model under certain scenarios, and their accuracy has been compared with the customized two-phase queueing model.
Bio
Yanling Deng commenced her PhD studies at NYU Shanghai in the fall of 2020. Prior to this, she earned her Bachelor’s and Master’s degrees in Civil Engineering from Zhejiang University in 2016 and 2019, respectively. Her research primarily focuses on transportation network modeling and optimization, transportation electrification, and the planning and operation of emerging charging infrastructure.
At NYU Shanghai, Yanling collaborates with Professor Zhibin Chen and his research group to address the intricate challenges of balancing EV adoption rates, forecasting charging demand, and enabling the systematic integration of next-generation charging infrastructure into urban systems. Her work has been published in leading transportation journals, including Transportation Research Part C: Emerging Technologies and Transportation Research Part D: Transport and Environment, underscoring her contributions to advancing sustainable mobility solutions.