Title :
A new class of quasi-square wave resonant converters with ZCS
Author :
Ismail, Esam ; Sebzali, Ahmad
Author_Institution :
Dept. of Electr. Eng., Coll. of Technol. Studies, Al-Shaa´´b, Kuwait
Abstract :
A new class of a single-switch zero-current switching and clamped current (ZCS-CC) DC-DC power converters are proposed. These power converters can be realized by connecting a resonant tank inductor and a diode in series with the active switch in a conventional PWM power converter, while a parallel combination of a filter inductor and a tank capacitor is connected in series with the freewheeling diode. All the semiconductors in these power converters switch at ZCS with minimum current stress, while the freewheeling diode turns-on at ZVS. Moreover, the variation in the semiconductor voltage stresses are relatively low at either full and minimum load. The steady-state characteristics for the complete power converter class are analyzed and verified
Keywords :
DC-DC power convertors; PWM power convertors; power capacitors; power inductors; power semiconductor diodes; power semiconductor switches; resonant power convertors; PWM power converter; active semiconductor switches; clamped current; filter inductor; freewheeling diode; quasi-square wave resonant DC/DC power converters; resonant tank inductor; semiconductor voltage stresses; steady-state characteristics; tank capacitor; zero-current switching; Active inductors; DC-DC power converters; Joining processes; Power semiconductor switches; Pulse width modulation; Resonance; Semiconductor diodes; Stress; Switching converters; Zero current switching;
Conference_Titel :
Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-7803-3840-5
DOI :
10.1109/PESC.1997.616948
