Battery duty profile of a heavy-duty trolleybus

In our effort to assess battery usage in transportation applications, we analyzed the anticipated battery duty profile of traction batteries in the context of an urban heavy-duty passenger trolleybus. Propulsion-wise, trolleybuses rely on grid-provided electrical power as well as an onboard high power diesel generator for out-of-trolley-network operation. Hence, to date, onboard electrical energy storage systems (ESS) are rare. However, upcoming projects plan on using ESS for short-to-medium range operation whenever the grid power is unavailable. Real-world data have been collected in the city of Lyon, France and processed using our exploratory multivariate data analysis method. Typical duty pulses have been derived and thus, the ESS´s duty profile can be anticipated for reliability and lifespan predictions.