Discrete-time modelling and behaviour analysis of an N-cell DC/DC buck converter. (2016)

• Record Type: Journal Article
• Authors: KoubaÁ¢, Karama; Feki, Moez
• Is Part Of: International journal of engineering systems modelling and simulation. Volume 8:Number 1(2016)
• Page Start: 54
• Page End: 64
• Publication Date: 2016
• Subjects: multi-cell converters -- DC-DC buck converters -- discrete time modelling -- proportional controllers -- chaotic behaviour -- chaos -- behavioural analysis -- pulse width modulation -- PWM -- stability analysis; Engineering systems -- Computer simulation -- Periodicals; Engineering systems -- Mathematical models -- Periodicals; 620.0042
• Languages: English
• ISSNs: 1755-9758

Abstract

Multi-cell converters were developed as a result of a growing need for higher power converters. They permit to reduce the voltage across the switches and the output voltage harmonics. In this paper, we propose a discrete model for a multi-cell DC/DC buck converter controlled by a proportional controller using the pulse width modulator technique. A detailed stability analysis is given with illustrative simulation results, which show that increasing the value of the current gain of the proportional controller leads to a chaotic behaviour.