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Internal resistance is currently one of the most effective ways to achieve the performance improvement, control optimization, and on‐line fault diagnosis of fuel cells. In the fuel cell internal resistance test (FCIRT) system (FCIRTS), the alternating current (AC) disturbance signal is mainly achieved through the use of DC/DC converters or other expensive program‐controlled equipments, which are expensive...
The two power sources of a fuel cell electric vehicle (FCEV) are proton electrolyte membrane fuel cell (PEMFC) and Li‐ion battery (LIB). The health status of PEMFC and LIB decreases with the use of FCEV, so the energy management strategy (EMS) needs to give an optimal power distribution based on the health status of power sources throughout the lifetime. However, rule‐based control strategies cannot...
Multi‐phase DC/DC converter is widely used in fuel cell vehicles to adjust the voltage. Single phase mode of converter is adopted to increase efficiency when current ripple meets requirement. Therefore, it is necessary to commutate between different phases at low frequency, due to the temperature rising of each phase‐leg. However, narrow pulse current occurs during the phase commutation. Pulse current...
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