Design and Analysis of Voltage Lift Technique Based Boost DC-DC Converter

摘要

Conventional DC-DC boost converters are unable to provide high step-up voltage gains due to the effect of power switches, rectifier diodes and the equivalent series resistance of inductors and capacitors. In this paper, the closed loop design and analysis of voltage lift technique based non-isolated dc-dc boost converter is carried out to achieve high step-up voltage gain. In the presented converter two inductors, three capacitors and three power diodes are used. The structure of the presented converter is to be considered a very simple, since it has only two power stages. The voltage and current equations of each element with converter voltage gain under continuous conduction mode (CCM) are extracted. Moreover, the steady state analysis of voltage gains and boundary conditions are discussed in this paper. Finally, the performance verification is carried out with a prototype circuit implemented in the laboratory.