Title :
Zero-voltage-switching PWM three-level converter with two clamp diodes
Author :
Ruan, Xinbo ; Xu, Dayu ; Yan, Yangguang
Author_Institution :
Aero-Power Sci-tech Center, Nanjing Univ. of Aeronaut. & Astronaut., China
fDate :
6/23/1905 12:00:00 AM
Abstract :
Zero-voltage-switching PWM three-level converter (ZVS PWM TL converter) realize ZVS for the switches with the use of the leakage inductance and the output capacitors of the switches, however the rectifier diodes still suffer the reverse recovery which results in oscillation and voltage spike. In order to solve this problem, this paper proposes a novel ZVS PWM TL converter, which introduces two clamp diodes to the basic TL converter to eliminate the oscillation and clamp the rectified voltage to the reflected input voltage and also realize ZVS for the switches. The operation principle of the novel converter is analyzed and is verified by a prototype converter. The experimental results are also included in this paper
Keywords :
PWM power convertors; capacitors; circuit oscillations; inductance; power factor correction; power semiconductor diodes; switching circuits; PWM three-level converter; ZVS; clamp diodes; leakage inductance; operation principle; oscillation; output capacitors; power factor correction; reverse recovery; voltage spike; zero-voltage-switching; Capacitors; Clamps; Diodes; Inductance; Pulse width modulation; Pulse width modulation converters; Rectifiers; Switches; Switching converters; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954060
