Dynamic modeling of a non-ideal DC-DC positive output elementary super-lift Luo converter

Abstract

A higher level of dc voltage from available lower dc-voltage is required in various industrial as well domestic applications. In literature, a number of dc-dc converters are available for this purpose. In past few years, a new breed of dc-dc converters namely Luo converters and super-lift Luo converters have been reported in power electronics field. These converters increase the output voltage stage by stage along arithmetic progression and geometric progression, respectively. This paper provides the analysis and mathematical modeling of a non-ideal dc-dc positive output elementary super-lift Luo converter (POESLLC) using concept of Leverrier's algorithm with state-space averaging (SSA) method. The control-to-output and input-to-output transfer functions are obtained for POESLLC. The transient and steady-state performances of the converter are investigated in presence of equivalent series resistances (ESRs) of inductors and capacitors. The time-domain and frequency domain responses are compared for ideal and non-ideal POESLLC to study the effect on closed-loop stability.