Abstract

An indirect fuel cell hybrid vehicle test bench is established for validating the control algorithm. The fuel cell output voltage is boosted through DC / DC converter. DC / DC converter positive and negative outputs are respectively connected with lithium battery sets positive and negative outputs. DC/DC converter output current and output power are regulated by the DC/DC converter main controller via CAN bus. So the fuel cell output power is regulated. Different fuel cell output power and motor input power proportional coefficient is adopted according to different lithium battery sets SOC (state of charge). The power distribution algorithm between fuel cell and Lithium battery sets is validated in tests.

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