Title :
A zero-voltage-switching PWM three-level converter using output saturable inductors
Author :
Liu, Xuechao ; Zhang, Bo
Author_Institution :
Electr. Power Dept., South China Univ. of Technol., Guangzhou, China
Abstract :
A novel phase-shift zero-voltage-switching PWM three-level DC/DC converter is proposed which introduces two output saturable inductors and an extra freewheeling diode. Thus it can achieve ZVS in wide output power range, reduce secondary duty cycle loss, clamp the parasitic oscillation and voltage spike of the output diode. The 48 V/5 A prototype experimental results verify the DC/DC converter has a good efficiency and stability performance with the use of peak current control, which can realize high power conversion.
Keywords :
DC-DC power convertors; PWM power convertors; electric current control; inductors; phase shifters; switching convertors; zero voltage switching; 48 V; 5 A; PWM three-level DC-DC converter; ZVS; high power conversion; parasitic oscillation; peak current control; saturable inductor; secondary duty cycle loss reduction; zero-voltage-switching;
Conference_Titel :
Power Electronics and Motion Control Conference, 2004. IPEMC 2004. The 4th International
Conference_Location :
Xi´an
Print_ISBN :
7-5605-1869-9
