Title :
Quasi-Z-source inverter based bi-directional DC/DC converter: Analysis of experimental results
Author :
Zakis, J. ; Vinnikov, D. ; Roasto, I. ; Ribickis, L.
Author_Institution :
Dept. of Electr. Drives & Power Electron., Tallinn Univ. of Technol., Tallinn, Estonia
Abstract :
This paper presents simulation and experimental results of a quasi-Z-source inverter (qZSI) based bi-directional DC/DC converter for supercapacitor (SC) interfacing. The bidirectional capability provides both the charging and discharging of the SC. During the charging mode the converter operates as a conventional VSI performing the voltage buck function, but during the discharging mode the converter operates as a qZSI based step-up DC/DC converter performing the voltage boost function. The proposed converter discussed was tested in both operating modes - SC charging and discharging. Theoretical assumptions are proved by the PSIM simulation results and verified experimentally on a 500 W laboratory prototype. The most important results obtained are outlined.
Keywords :
DC-DC power convertors; invertors; supercapacitors; bi-directional DC/DC converter; power 500 W; quasi-Z-source inverter; supercapacitor; voltage boost function; voltage buck function; Analytical models; Bidirectional control; Capacitance; Inverters; Simulation; Transistors; Voltage control;
Conference_Titel :
Compatibility and Power Electronics (CPE), 2011 7th International Conference-Workshop
Conference_Location :
Tallinn
Print_ISBN :
978-1-4244-8806-3
Electronic_ISBN :
978-1-4244-8805-6
DOI :
10.1109/CPE.2011.5942267
