Non-square Control for Voltage of Fuel Cell

This paper studied the voltage control problem of the proton exchange membrane fuel cell(PEMFC).The number of input variables of the PEMFC exceeds the number of output variables,so it is a typical non-square system and its control is difficult.This paper adopted a new method to control the non-square system.This method not only dynamically compensates for the drawbacks caused by the static decoupling but also overcomes the impact of the model error on system performance caused by model approximation and uncertainty.The method was applied to a PEMFC model.Simulation results show that the method can achieve good dynamic responses and robustness,and it has good load rejection ability.Furthermore,it is easy to be tuned and implemented.