Step-up inverter conceived by the integration between a Full-Bridge inverter and a Switched Capacitor Converter

摘要

In this paper is proposed the integration between a Voltage Source Inverter (VSI) and a Switched Capacitor Converter (SCC) to generate a sinusoidal waveform with a double peak voltage value at the converter output terminal, without the use of a transformer or a dc-dc boost stage. Initially, VSI and SCC models are individually characterized to integrate both structures in only one topology. Between these converters a LC filter is implemented to provide sinusoidal waveform at the output voltage terminal. The proposed converter was also tested using numerical simulations to verify the theoretical developments in open and close loop controls. Furthermore, a 1 kVA prototype was designed, built and tested in laboratory to corroborate all the concepts studied and presented in this paper.