An adaptive charging control strategy for ultracapacitor light rail vehicles

In this paper, an adaptive extremum seeking control strategy with sliding mode is develop to charge the ultracapacitor light rail vehicles. Compared with existing model-based charging algorithms, the proposed extremum seeking (ES) charging control strategy is model-free, which implies that it can handle the ageing effect of ultracapacitors well. Moreover, a sliding mode mechanism is embedded into the charging controller to suppress the disturbances introduced by sensors. Simulation and experiment results are presented to show the effectiveness of the proposed design.