Simulation-based Evaluation of Savings Potentials for Hybrid Trolley Bus Fleets

This study explores the potential benefits of hybrid trolley buses (HTBs) in reducing greenhouse gas emissions and improving operational efficiency in urban public transport systems. With the increasing need for sustainable alternatives to diesel buses, HTB leverage in-motion charging (IMC) capabilities, allowing them to draw power from existing catenary grids while also incorporating battery storage for off-grid operation. Using a simulation environment based on real-world data, we examined the impact of various charging strategies on battery aging and the electricity grid. Our findings indicate that optimized charging strategies can significantly reduce battery degradation and power demand peaks, leading to cost savings for fleet operators. By implementing smart charging strategies operators can enhance the lifespan of battery systems and ensure reliable service continuity. This research highlights the importance of integrating innovative charging solutions in public transport planning, advocating for further studies to refine these strategies for broader application in urban transport networks.