A DC-DC converter based on the three-state switching cell for high current and voltage step-down applications
MetadataShow full item record
This paper presents a pulsewidth modulation dc-dc nonisolated buck converter using the three-state switching cell, constituted by two active switches, two diodes, and two coupled inductors. Only part of the load power is processed by the active switches, reducing the peak current through the switches to half of the load current, as higher power levels can then be achieved by the proposed topology. The volume of reactive elements, i.e., inductors and capacitors, is also decreased since the ripple frequency of the output voltage is twice the switching frequency. Due to the intrinsic characteristics of the topology, total losses are distributed among all semiconductors. Another advantage of this converter is the reduced region for discontinuous conduction mode when compared to the conventional buck converter or, in other words, the operation range in continuous conduction mode is increased, as demonstrated by the static gain plot. The theoretical approach is detailed through qualitative and quantitative analyses by the application of the three-state switching cell to the buck converter operating in nonoverlapping mode $(D < 0.5)$. Besides, the mathematical analysis and development of an experimental prototype rated at 1 kW are carried out. The main experimental results are presented and adequately discussed to clearly identify its claimed advantages. © 1986-2012 IEEE.
How to cite this document
Showing items related by title, author, creator and subject.
Interactive DC-DC converters tools for instant design and education Gonçalves, Flávio A. S. ; Sampaio, Leonardo P. ; Canesin, Carlos A. (2009 Brazilian Power Electronics Conference, COBEP2009, 2009) [Trabalho apresentado em evento]This paper deals with the usage of interactive simulations tools to serve as an oriented design tool for the lectures and laboratory experiments in the power electronics courses. A dynamic and interactive visualization of ...
Integrated single-stage converters with Tri-state modulation suitable for photovoltaic systems Galotto, Luigi ; De Brito, Moacyr A.G. ; Sampaio, Leonardo P. ; Canesin, Carlos A. (COBEP 2011 - 11th Brazilian Power Electronics Conference, 2011) [Trabalho apresentado em evento]The aim of this work is to present two topological simplified converters named Tri-state Boost and Tri-state Buck-Boost integrated single-phase inverters. An important operation capability can be achieved for these converters ...
Micro-inverter for integrated grid-tie PV module using resonant controller Gazoli, Jonas Rafael; Villalva, Marcelo Gradella ; Siqueira, Thais G.; Ruppert, Ernesto (IEEE Power and Energy Society General Meeting, 2012) [Trabalho apresentado em evento]Two-stage isolated converters for photovoltaic (PV) applications commonly employ a high-frequency transformer on the DC-DC side, submitting the DC-AC inverter switches to high voltages and forcing the use of IGBTs instead ...