Multiple internal model control for optimal oxygen excess ratio of PEMFC

Abstract:

Abstract: It is very difficulty to ensure that the controller derived by traditionally internal principal or PID has good performance over a wide range of operating condition due to the nonlinearity of the air supply subsystem of the proton exchange membrane fuel cell(PEMFC). In this paper, a strategy for optimal oxygen excess ratio of PEMFC is investigated base on multiple internal model principal and feedforward. In the proposed strategy, internal models, firstly, are derived by linearizing the PEMFC system at different operating conditions; then the strategy is achieved by the combination of membership function and feed forward design method. Simulation results show that the proposed strategy has better performance than conventional single internal model controller and PID controller.