Abstract Aiming at the problem that proton exchange membrane fuel cell (PEMFC) is difficult for application with high current and wide voltage output, a pre-regulator module of PEMFC is proposed with four-switch Buck-Boost converter as the main topology in this paper. To reduce the inductor current ripple, a kind of dual-triggered switch strategy is analyzed in detail. And an accurate dynamic model of the main topology is proposed based on the equivalence principle of high frequency switching network. Then a fractional order PID controller is designed for voltage compensation of module, and a stochastic inertia weight PSO algorithm is employed to adjust the parameters of controller. The results of Simulation and experiment show that the compensation effect of fractional order PID controller has better performance than the integer order controller, which has stronger robustness when the system parameters or structure vary. And the designed module can realize the efficient and reliable pre-regulator function.
Qi Zhidong,Pei Jin,Hu Di. Pre-Stage Power Converter of Proton Exchange Membrane Fuel Cell Based on Fractional Order PID Controller[J]. Transactions of China Electrotechnical Society, 2019, 34(zk1): 235-243.
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2019, Vol. 34 
