The comparison of different types of DC-DC converters in terms of low-voltage implementation

Abstract

This paper deals with the question about the most efficient and less energy consumptive type of low-voltage DC-DC converter. Different types of DC-DC converters (Synchronous buck-boost, Cuk, Zeta, Sepic etc.) are analyzed in terms of low voltage implementation. The comparison of energy consumption of different types of converters is given. Different examples of such converter implementation are examined — for example, low voltage DC-DC converters can be used as power converter in photovoltaic system, or, for example, as charging converter for batteries. Different physical models of such implementations are presented — a model with small amount of photovoltaic cells, and a model where DC-DC converter is used as a charging converter for batteries for a power wheelchair, or for example, for battery used to power prosthetic limbs (hands, legs etc.).