Trajectory Tracking Control for a Boost Converter Based on the Differential Flatness Property

This paper presents the control design for the regulation and trajectory tracking tasks of the non-minimum phase output voltage of a DC-DC Boost-type power converter. The proposed approach exploits the differential flatness property of the system leading to a control strategy whose benefits include a simple derivation based on the parameterization of the control input and a zero steady-state error in the system response due to the establishment of predefined stable error dynamics. The main contribution of this paper is that the proposed controller is robust against power supply variations that may arise from the use of renewable energy sources. Furthermore, it is also robust against load variations that are normally related to energy consumption demands. These aspects are disregarded in most of the existing control techniques. Successful validation of the effectiveness of the flatness-based control system is carried out through numerical simulations and experimental tests performed in a built prototype of the system.

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