Nonlinear Iterated Mappings based Model and Tracking Control of Boost Converter

On account of the inductance current continuous conduction mode boost converter, a approximate discrete time nonlinear model is proposed in this paper on the basis of the nonlinear iterated mappings method. Then, an exact feedback linearization method over the discrete time nonlinear system is introduced, in order to deduce a partial linearized form. Utilizing this form, a control algorithm is derived according to the pole placement. The simulation results indicate that the performance of the proposed control algorithm presents a fast dynamic response, an accurate tracking feature and a strong robustness towards the disturbance from the input voltage.