Active Switched-Inductor Network Step-Up DC–DC Converter With Wide Range of Voltage-Gain at the Lower Range of Duty Cycles

Abstract

In many emerging applications, a dc–dc converter with a wide range of voltage conversion is necessary to equalize the output voltage level from various low voltage sources. To meet this purpose, as well as to reduce the number of power conversion stages in high step-up operation, a wide range of voltage gain dc–dc converter is proposed in this article. This converter is structured as an optimized integration of active switched-inductor configuration, and ladder-type voltage multiplier is merged with the regenerative-boost arrangement. Thereby, due to such an organization of structure, the proposed converter is developed the extremely high voltage-gain with comparatively fewer components. It has the advantages of clamped the input peak current, and higher voltage gain can be achieved at lower duty-ratios. This article describes the comprehensive steady-state analysis and performance characteristics in detail. Moreover, a detailed comparative performance analysis is carried out with existing recent literature. Finally, to validate the theoretical analysis and test feasibility and suitability of the proposed dc–dc converter, experimental results were observed using a 300 W fabricated prototype model.