Abstract: The object of fuel cell vehicle power train control is to balance the energy and power between fuel cell engine, power batteries and electric motor to achieve better dynamic performance and fuel economy. According to fuel cell vehicle basic topological architecture, a DC/DC converter current controlled mode is presented and an algorithm based on fuzzy logic to balance battery state of charge is introduced, then the control mode and algorithm are verified in matlab by off-line simulation, then tested by rapid control prototyping method on a real fuel cell vehicle.

Key words: Fuel cell vehicle, Fuzzy decision, Powertrain control