Improved DC to DC boost converter behavior by using a two stage voltage conversion

Abstract

This paper presents a combined boost converter solution which is made of two power stages in series. The first stage is a two interleaved stages boost converter with constant duty cycle and the second stage is a simple boost converter with variable duty cycle. The voltage controller of the second stage is P.I.D. DC to DC boost converter scheme was implemented in MULTISIM and numerically simulated for a load of 5 Ω. Due to the complexity of the converter scheme was chosen a lower output current to achieve a reasonable simulation time. It also stands for the version of the converter that the input current ripples are as lower as 4.16% of the average input current. This is an option that suits where a fuel cell is used as an energy source.