Title :
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
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;
Conference_Titel :
Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
978-1-4673-1299-8
DOI :
10.1109/SPEEDAM.2012.6264554
