Fernando Lessa Tofoli

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—This paper presents the conception and analysis of a switch-mode power supply (SMPS) with desirable characteristics of high-frequency isolation, high input power factor, low harmonic distortion, and high efficiency. Nearly unity input power factor can be obtained by using an interleaved boost converter associated with a nondissipative snubber, as high(More)
— This paper presents the analysis, design, and simulation results for a ZVS bidirectional isolated three-phase DC-DC converter with dual phase-shift and variable duty cycle. The topology uses three single H-bridges in the primary side and a three-phase inverter in the secondary side. The isolation is ensured by using three single-phase transformers(More)
  • Demercil De, Souza Oliveira, Carlos Elmano De Alencar E Silva, René Pastor Torrico-Bascopé, Fernando Lessa Tofoli, Carlos Augusto Bissochi +3 others
  • 2011
—The study of a topology resulting from the combination of two forward structures attached to a single transformer core is presented in this paper, as a dual active bridge converter is obtained. In order to reduce the switching losses and the electromagnetic interference, a soft commutation cell, which provides zero-voltage commutation of the main switches(More)
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