Some Approach to Active Disturbance Rejection Control in Fuel Cells Regarding Air Inlet Flow Control.

Air inlet flow control is critical for performance of Proton Exchange Membrane Fuel Cells (PEMFC). An essential gauge for air input flow is the oxygen excess ratio (OER). However, accurate controlling for OER is a huge challenge because of the erroneous modeling, imprecise parameter values, and disturbances. An Active Disturbance Rejection Control (ADRC) approach is suggested in this research as a means of resolving the issue of fuel cells' internal and exterior interference. Firstly, the total disturbance is obtained using an extended state observer. Secondly, the total disturbance is compensated before the control action to determine the control quantity for air supply, which is further controlled by modifying the air compressor's voltage. The performance comparison between the suggested approach and PID and fuzzy PID control shows that the proposed technique can achieve a higher reliability for managing the mechanical faults of the air compressor. In addition, the root mean square error (RMSE) of control time and overshoot is smaller. [ABSTRACT FROM AUTHOR]