Performance Evaluation of DAB-Based Partial Power Processing for In-Motion-Charging Trolleybuses

The performance evaluation of on-board chargers for in-motion-charging trolleybuses considering full and partial power processing solutions is discussed. For both cases, the actual power conversion is performed by employing a dual active bridge converter specifically tailored for the application. Realistic voltage profiles taken from Bologna's trolleybus network have been considered. Mission profiles are analyzed considering two different in-motion-charging trolleybus penetration scenarios: in the first one, both conventional and in-motion-charging trolleybuses share the same route, while in the second one, the trolleybus power grid is employed solely by in-motion-charging trolleybuses. The results indicate that the partial power processing solution presents a better efficiency performance over the full power processing counterpart in the voltage range typically experienced by trolleybuses. Therefore, partial power processing realized with dual active bridge converters is deemed suitable for in-motion-charging trolleybus applications. Index Terms-dual-active-bridge, efficiency, full power process- ing, in motion charging, partial power processing, trolleybuses