Steady-state analysis and controller design for a high gain fifth-order boost converter

Abstract

A high gain fifth-order boost converter is proposed in this paper. This converter belongs to two switch topology and is capable of giving a higher voltage gain at moderate duty ratios. Firstly, a steady-state analysis is developed for continuous inductor current mode of operation and then various parameter design equations are formulated. For dynamical characterization state-space-models are established and then discrete-time small-signal models are formulated which are then used in the digital controller design procedure. Salient performance parameters of this converter are compared with other fifth-order boost topologies reported in literature. In order to verify the analysis and features of the proposed topology a 24 to 100 V, 100 Watt prototype is considered both in analysis and simulation. Analysis and simulation results are in close agreement with each other.