ABSTRACT
An adaptive control strategy for fuel cell stabilization is proposed to alleviate the coupling effects of power output variation and performance degradation in the whole service life. An improved semi-empirical model is firstly developed to describe and analyze the direct methanol fuel cell (DMFC) performance under different operating conditions while considering degradations. Multi-objective optimizations are then utilized for the adaptive generation of control strategy to stabilize the voltage. Experiments are implemented to validate the effectiveness of the adaptive control strategy at different time periods during long-term operation. The results show that the improved semi-empirical model can provide a dynamic description of DMFC I-V relationships with the time. The adaptive control strategy developed from this model is effective for voltage stabilization that the deviation could be constrained in ±10% at different power outputs during long-term operation.
Disclosure statement
No potential conflict of interest was reported by the author(s).