Exact Linearization Control of a Two-Stage DC–AC Converter With a Power Pulsating Buffer

Abstract

This paper proposes to combine full feedback linearization with full state feedback and trajectory tracking control in order to obtain a high performance dc-ac boost converter. The system is composed of a boost converter, an inverter and a power pulsation buffer, which removes the ripple from the dc-link, and allows reducing the size of its capacitor. This can improve the reliability of the system, as smaller capacitors do not need to be electrolytic. The use of full feedback linearization enables a stable controller at any point of operation, while the trajectory tracking control allows high performance tracking of the references (required for smaller capacitor values). The steady state performance and disturbance rejection capabilities are provided by the full state feedback control. Additionally, the effect of parametric mismatches is analyzed, and the robustness of the proposal is validated through simulations and experimental results.