Title :
Design of an All-SiC Radio-frequency Controlled Parallel DC-DC Converter Unit
Author :
Mazumder, Sudip K. ; Acharya, Kaustuva ; Tan, Chuen Ming
Author_Institution :
Univ. of Illinois, Chicago
Abstract :
We demonstrate the feasibility of radio-frequency (RF) communication based wireless load-sharing control of a two-module parallel dc-dc (Weinberg) converter unit (DDCU) operating at a high switching frequency (0.25 MHz). The impact of time delay (due to varying network sampling rates and channel disruptions) on the stability and performance of the DDCU are analyzed leading to robust control design, which compensates for the time-varying delays. Additionally, using experimental results, we demonstrate that an all-SiC (SiC VJFET and SiC Schottky diode) based hard-switched power-stage design achieves high efficiency in spite of operating at high frequency and high temperature.
Keywords :
DC-DC power convertors; Schottky diodes; junction gate field effect transistors; silicon compounds; wide band gap semiconductors; Schottky diode; SiC; VJFET; channel disruptions; hard-switched power-stage; parallel DC-DC converter; radiofrequency communication; time-varying delays; wireless load-sharing control; Communication system control; DC-DC power converters; Delay effects; Radio control; Radio frequency; Sampling methods; Silicon carbide; Switching converters; Switching frequency; Wireless communication; PMAD; SiC; Weinberg converter; control; dc-dc converter unit (DDCU); international space station (ISS); load sharing; network; radio frequency (RF); stability; time-delay; wireless;
Conference_Titel :
Power Electronics Specialists Conference, 2007. PESC 2007. IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-0654-8
Electronic_ISBN :
0275-9306
DOI :
10.1109/PESC.2007.4342468
