An Intelligent Control Strategy for Power and Voltage of PEMFC Generator

The power of PEMFC (proton exchange membrane fuel cell) generator needs to be controlled to follow the variable load demand, and the voltage also needs to be conditioned for the load use. An intelligent power and the voltage control strategy of a 60 kW PEMFC generator current researched is presented in this paper. A BP (Back propagation) neuron network including a hidden layer is used to model the inverse system of PEMFC stack power. Then the nonlinear neuron network inverse control method is used to control the generator output power. A DC/DC boost converter and a DC/AC inverter are used to condition the stack voltage, which are both controlled by single neuron PI controllers in close loops. The total control strategy for the power and the voltage of the 60 kW PEMFC generator is proved efficient and easy implement by simulation tests.