Title :
New ZVZCS PWM DC-DC converters with one auxiliary switch
Author :
Ryu, Seung-Hee ; Lee, Dong-Yun ; Yoo, Sang-Bong ; Hyun, Dong-seok
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
This paper presents new zero-voltage/zero-current-switching (ZVZCS) PWM DC-DC converters. The proposed soft-switching technique achieves ZVS and ZCS simultaneously at both turn-on and turn-off of the main switch and diode by use of only one auxiliary switch. Also, this technique is suitable for not only minority but also majority carrier semiconductor devices. The auxiliary circuit of the proposed topologies is placed out of the main power path, therefore, there are no voltage/current stresses on the main switch and diode. The operating principle of the proposed topologies is illustrated by a detailed study with a boost converter as an example. Theoretical analysis, simulation and experimental results are presented to explain the proposed schemes
Keywords :
DC-DC power convertors; PWM power convertors; switching circuits; ZVZCS PWM DC-DC converters; auxiliary switch; boost converter; majority carrier semiconductor devices; minority carrier semiconductor devices; operating principle; operation principles; turn-off; turn-on; zero-current-switching; zero-voltage switching; Circuit topology; DC-DC power converters; Power semiconductor switches; Pulse width modulation; Pulse width modulation converters; Semiconductor devices; Semiconductor diodes; Switching converters; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.789044