Abstract: When the performance of air compressor degrades or its static characteristics change, the control quality of the air supply system in proton exchange membrane fuel cell by using feedforward compensation decoupling closed-loop control algorithm will deteriorate. In view of this, an adaptive table-lookup algorithm is added onto the feedforward compensation decoupling closed-loop control algorithm, to enhance the speed adjustment capability of air compressor. The results of hardware-in-the-loop simulation show that the improved adaptive decoupling control algorithm can online and adaptively update the air compressor speed calibration table, thus effectively eliminating the phenomenon of integral saturation in PI regulator, speeding up the response of air compressor and improving the control effect of inlet air flow

Key words: PEMFC, air supply system, feedforward compensation decoupling, adaptive table-lookup algorithm, hardware-in-the-loop simulation