Abstract
This work presents a power-electronics based system for renewable energy applications, the system is driven with an only one switch quadratic type boost converter, the discussed converter is based on a stack of switching stages which provide a large voltage gain, a desirable feature for fuel cell generation systems, the converters gain function is the quadratic boost-type converters; furthermore, the topology can be extended. The major benefit of the topology is that there is not a capacitor that sustains the entire output voltage, in contrast to other similar topologies in which there is a capacitor rated to the output port voltage, there is no high voltage capacitor in this system. Experimental verification is presented to confirm the system principles; experiments included a fuel cell emulator that was built and used for the experiments.
Highlights
Step-up converters are widely used in electronic systems, such as green energy production systems like those based on fuel cells or photovoltaic panels
Transformer-less converters can be based on several principles such as (1) voltage multipliers based on switched capacitors [4,5]; (2) combination of circuits which input are parallel connected, and which outputs are connected in series [6,7,8]; (3) quadratic topologies [9,10], etc
Corroborated with experimental results; the major the proposed aresystem corroborated with experimental results; a fuel cell aand fuel cell emulator wasofbuilt andofused for the experimental a fuel cellwas emulator wasused builtfor andthe used for the experimental emulator built and experimental results. results
Summary
Step-up converters are widely used in electronic systems, such as green energy production systems like those based on fuel cells or photovoltaic panels. Several solutions exist that can fulfill the challenge and achieve high voltage conversion ratios, for example, topologies based on magnetic coupling such as transformers and/or coupled inductors [1,2,3] Another plausible solution is the use of transformer-less topologies, which can be built with commercial components (off-the-shelf), which is an advantage for magnetic coupling-based converters, transformer-less topologies provide a reduced size solution. This article presents a boots type dc–dc converter with quadratic voltage gain and a reduced number of active components (it uses only one transistor). This article presents a boots type dc–dc converter with quadratic voltage gain and a reduced. Corroborated with experimental results; the major the proposed aresystem corroborated with experimental results; a fuel cell aand fuel cell emulator wasofbuilt andofused for the experimental a fuel cellwas emulator wasused builtfor andthe used for the experimental emulator built and experimental results. results
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