A Novel Current-Shunt-Input Voltage-Series-Output High Step-Up Converter with a New Coupled-Inductor Boost Module

In this paper, a novel current-shunt-input voltage-series-output high step-up converter with a new coupled-inductor boost module is proposed. The proposed converter can achieve a high voltage gain, which is more than that of a conventional boost converter, without operating in an extremely large duty cycle. The operating principle, steady-state analysis and component design considerations are presented herein. Prototype of 40 V input, 400 V output, 50 kHz switching frequency and 200~500 W rated power of the proposed converters are built and tested. The Is-Spice simulations and experimental results are thus shown to verify the theoretical analysis of the proposed converter. It can also obtain the high efficiency of 93.9 % at 200 W.