Dynamic behaviour of qZS-based bi-directional DC/DC converter in supercapacitor charging mode

Author

Zakis, Janis ; Vinnikov, Dmitri ; Husev, Oleksandr ; Rankis, Ivars

Author_Institution

Tallinn Univ. of Technol., Tallinn, Estonia

fYear

2012

fDate

20-22 June 2012

Firstpage

764

Lastpage

768

Abstract

This paper presents a bi-directional quasi-Z-source inverter (qZSI) based DC/DC converter for supercapacitor (SC) interfacing in high power applications. In the SC charging mode the proposed converter acts as a conventional VSI based step-down converter, but in the energy recovery mode it acts as a qZSI-based step-up DC/DC converter. The paper analyzes and discusses the operation of the converter in the SC charging mode. The analysis of the static model of the converter as well as the Bode diagram are presented. Theoretical results are verified by experimental results on a 500 W prototype converter.

Keywords

DC-DC power convertors; supercapacitors; Bode diagram; SC charging mode; VSI based step-down converter; bidirectional quasi-Z-source inverter; converter static model; energy recovery mode; high power applications; power 500 W; qZS-based bidirectional DC-DC converter dynamic behaviour; supercapacitor charging mode; Bidirectional control; DC-DC power converters; Inductance; Inverters; Supercapacitors; Voltage control; Windings; Bidirectional power flow; DC/DC power converters; energy conversion; energy storage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on

Conference_Location

Sorrento

Print_ISBN

978-1-4673-1299-8

Type

conf

DOI

10.1109/SPEEDAM.2012.6264554

Filename

6264554