Designing the optimal number of active branches in a multi-branch buck-boost converter

Introduction. Multi-branch buck-boost converters, widely used in energy conversion from alternative sources, offer significant advantages over single-branch configurations. Critical, however, is the question of the appropriate number of branches for optimal efficiency and the given output power of the converter. The novelty of the proposed work consists in the development of a precise method for determining the optimal number of branches in a multi-branch buck-boost converter for a specified output power. Additionally, the findings enable the development of adaptive control strategies that dynamically adjust the number of active branches based on the converter’s instantaneous power. This approach enhances the overall efficiency of the converter. Goal. The study aims to analyze the efficiency of multi-branch buck-boost converters, focusing on the optimal number of branches and the required output power. Methods. The problem was addressed through a theoretical analysis of the converter’s electrical equivalent circuit. The theoretical results were validated through practical measurements conducted on a prototype converter. Results. A detailed equivalent circuit for the converter was d