Enhanced One-Cycle Control for Multicell Power Converters

In this article, we propose an enhanced one-cycle control (EOCC) strategy for high-voltage gain multicell converters, aiming to resolve the existing issues that exist in the conventional one-cycle control techniques, such as intolerance to load disturbances and inapplicability to multicell converters. The proposed EOCC method is able to overcome these limitations while effectively suppressing input voltage fluctuations and having great responsiveness. Simulation and experimentation on an improved four-cell switched inductor with the proposed EOCC are conducted, which agree well with the theoretical analyses and demonstrate a range of favorable features of the EOCC method, revealing its great feasibility and wide applicability.