Fuel Cell Drive Train Systems -- Driving Cycle Evaluation of Potential Topologies

Conclusive studies or data as to the suitability of any particular fuel cell vehicle drive train for use in passenger cars are currently very limited. Data which does exist is focused on specific topologies or testing methods and does not allow easy comparison with other sources. This paper analyses the results of computer simulation work which evaluated several drive train topologies using common models for the fuel cell vehicle components and four standard driving cycles with the aim of identifying if an optimal topology exists for all driving modes. The results show that certain topologies provide a high performance vehicle but that no single topology provides an optimal efficiency for both urban, and extra-urban driving modes. The fuel cell compressor system has been identified as an important factor in this disparity