Title :
A DC-DC converter topology with phase shift control and lossless snubbers for use in a 200 A battery charger working on 400 V mains
Author :
Torvetjonn, Gisle J. ; Undeland, Tore M. ; Schmidt, Odd Roar ; Bryde, Jan Henrik
Author_Institution :
Fac. of Electr. & Comput. Sci., Norwegian Inst. of Technol., Trondheim, Norway
Abstract :
A battery charger for telecommunications is presented. This converter operates at a rectified three phase 400 V mains which supplies the DC-DC converter with 750 V DC. The paper describes the switching loss reduction when high voltage IGBTs operate in this promising DC-DC converter topology. There are measurements on a transistor in a chopper circuit to investigate the turn-off characteristic with a capacitor in parallel with the transistor. This test was done on a Toshiba IGBT-module. The selected capacitor was then used for the measurements on the DC-DC converter. The measurements on the DC-DC converter were done with both Toshiba and Siemens IGBT modules. The stresses on the components are decreased both compared to hard-switched and resonant types of converter
Keywords :
DC-DC power convertors; battery chargers; choppers (circuits); insulated gate bipolar transistors; phase control; protection; rectifying circuits; snubbers; telecommunication equipment; 200 A; 400 V; 750 V; DC-DC converter topology; Siemens; Toshiba; Toshiba IGBT-module; battery charger; chopper circuit; hard-switched converter; high voltage IGBT; lossless snubbers; phase shift control; resonant converter; switching loss reduction; telecommunications; Battery charge measurement; Choppers; Circuit topology; DC-DC power converters; Insulated gate bipolar transistors; Switched capacitor circuits; Switching converters; Switching loss; Telecommunication control; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 1995. INTELEC '95., 17th International
Conference_Location :
The Hague
Print_ISBN :
0-7803-2750-0
DOI :
10.1109/INTLEC.1995.499001
