Modelo equivalente e controle digital de um conversor CC-CC boost intercalado com alto ganho de tensão

Abstract

This work presents a methodology for modeling and designing the digital control of a DC-DC Boost converter with high voltage gain based-on the three-state switching cell (TSSC). The control strategy adopted is the averaged current mode control with four internal current loops, one for each phase of the TMIFs (Multi-Interphase Transformer), which receive the same reference signal coming from an external voltage loop. The adopted strategy is able to guarantee equal current sharing between the phases of the transformers. The factor K method and Zero-Order Hold (ZOH) discretization are used for the design of the digital controllers. Simulation results for a 1 kW plant are presented to validate the proposed model.