Title :
On the design and experimentation of a high performance 25 A/48 V rectifier unit
Author :
Vieira, L. L Freitas ; Gabiatti, G. ; Barbi, Ivo
Author_Institution :
Univ. Federal do Espirito Santo, Vitoria, Brazil
Abstract :
A 25 A/48 V rectifier unit to be used as a battery charger for telecommunication applications is described. The unit is based on a modified version of the full-bridge zero-voltage switching pulse width modulated (FB-ZVS-PWM) DC/DC converter, which operates with no switching losses from no-load to full-load. The input stage is composed of a single-phase AC-to-DC converter with two diodes and two thyristors, which limit the inrush current, and it is used to disconnect the unit from the line in the case of malfunction. A 100-kHz operational prototype has been designed, fabricated and successfully tested in a laboratory. The overall measured efficiency is 94% at full load. Design procedure and experimental results are presented and discussed
Keywords :
battery chargers; bridge circuits; power convertors; pulse width modulation; telecommunication equipment; 25 A; 48 V; 94 percent; PWM DC/DC converter; battery charger; diodes; full load; full-bridge zero-voltage switching; input stage; inrush current; measured efficiency; rectifier unit; single-phase AC-to-DC converter; telecommunication applications; thyristors; Batteries; DC-DC power converters; Diodes; Pulse width modulation; Pulse width modulation converters; Rectifiers; Surges; Switching loss; Thyristors; Zero voltage switching;
Conference_Titel :
Telecommunications Energy Conference, 1992. INTELEC '92., 14th International
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0779-8
DOI :
10.1109/INTLEC.1992.268390
