PEM Fuel Cells in Applications of Urban Public Transport

Abstract

This paper is focused on the analysis and design of an electric bus, powered by fuel cell and solar modules. The system uses a 400 V DC bus, interconnected by electronic converters with photovoltaic modules, batteries, ultracapacitors, fuel cell, electrolyzer, propulsion engines and conditioning devices. This arrangement allows the energy exchange between devices in an optimal way, allowing also the recovery of braking energy via the inverter, to charge batteries and ultracapacitors, or to generate hydrogen using the electrolyzer.