Degraded control strategy using state-of-health in fuel cell hybrid electric vehicles

This paper presents a new approach concerning degraded conditions of energy converters in fuel cell hybrid electrical vehicles (FCHEVs) powertrain. After introducing weak points and systems of such powertrain and previous proposals boundaries, a solution, based on an adaptive power split control strategy is presented. This approach relies on energy and power sources state-of-health (SoH). SoH input is added to an existing fuzzy logic controller, in order to prevent an out-of-operation fault. Simulations results for different scenarios using real driving cycles are presented and discussed.