![]() Then solid state switches resonantly charges the capacitors in parallel through an air-cored inductor. In the step-up mode, the closing of solid state switches resonantly charges the capacitors in parallel through an air-cored more ยป inductor. The converter consists of a set of capacitors, air core inductors and solid state switches arranged in a ladder network. This paper presents a detailed simulation of the proposed circuit together with the analysis of its performance. A multi-level circuit was suggested by Limpaecher. The developments of fast switching IGBT devices permit the development of transformer-less, multi-level converters. The traditional approach is the application of twelve-pulse thyristor bridges with transformers. HVDC systems require DC step up and DC step down units. ![]()
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