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Gain Scheduling Control of a Bidirectional DC-DC Converter with Large Dead-Time

Tijdschriftbijdrage - Tijdschriftartikel

This paper investigates the impact of the dead-time of the semiconductor switches on the operation of a dc-dc converter used in a bidirectional storage system for a hybrid electric vehicle. The dead-time of the switches of the dc-dc converter under investigation is exaggerated to clearly illustrate the effects of the non-linear dependency of the current on the duty cycle. The resulting current response makes it impossible for a simple PI-controller to regulate the current in a satisfactory way. In this paper the mechanism behind the highly non-linear behaviour is investigated. The results of the analysis are used to develop a control scheme that employs gain scheduling and duty cycle presetting to cope with the non-linear response of the converter current to changes in the duty cycle. Experimental results are presented based on the implementation of the proposed control algorithm on a two-phase interleaved bidirectional boost converter to prove the viability of the concept.
Tijdschrift: IET Power Electronics
ISSN: 1755-4535
Issue: 3
Volume: 7
Pagina's: 480 - 488
Jaar van publicatie:2014
BOF-keylabel:ja
IOF-keylabel:ja
BOF-publication weight:1
CSS-citation score:1
Authors from:Government, Higher Education
Toegankelijkheid:Open