Title :
Analysis and design of improved isolated full-bridge bidirectional DC-DC converter
Author :
Li, Rongyuan ; Pottharst, Andreas ; Fröhleke, Norbert ; Böcker, Joachim
Author_Institution :
Inst. of Power Electron. & Electr. Drives, Paderborn Univ., Germany
Abstract :
A novel isolated full-bridge DC-DC converter with bidirectional power flow is proposed in this paper. By adding auxiliary active clamping circuits to both bridges, zero-voltage and zero-current-switching are achieved to improve the performance of the bidirectional PWM converter. The switches are controlled by phase shifted PWM signals with a variable duty cycle. The principle of operation is analyzed and simulated. Experimental results of a 3 kW 50 kHz prototype are presented.
Keywords :
DC-DC power convertors; PWM power convertors; active networks; clamps; load flow control; phase shifters; switches; switching convertors; 3 kW; 50 kHz; DC-DC converter; active clamping circuits; bidirectional PWM converter; bidirectional power flow; full-bridge converter; phase shifted PWM signals; switch control; variable duty cycle; zero-current-switching; zero-voltage switching; Analytical models; Bidirectional power flow; Bridge circuits; Circuit simulation; Clamps; DC-DC power converters; Pulse width modulation; Pulse width modulation converters; Switches; Zero current switching;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355801
