Conventional air independent system is very difficult to meet the required efficiency target with high performance when it is used for submarine. The fuel cell system with liquid oxygen is applied to the air independent propulsion of submarine which can promise wider tactical range than conventional system. In this study, a dynamic simulation model is developed to evaluate the performance of the fuel cell air independent propulsion system (FCAIP). The simulation model is a cascading fuel cell stack model which can precisely predict the performance of very unique stack design architecture suggested by Siemens AG. The dynamic stack model is used for the evaluation of thermal management of fuel cell system under load follow-up.

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