Optimization of the auxiliary switch components in a flying capacitor ZVS PWM converters

Author

Ben-yaakov, Sam ; Ivensky, Gregory ; Levitin, Oleg ; Treiner, Alexander

Author_Institution

Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

Issue

0

fYear

1995

Firstpage

503

Abstract

A family of PWM converters with an Auxiliary Switch Assisted Soft Switcher (AASS) is studied. The basic AASS cell includes an inductor connected in series with the auxiliary switch of the converter, a capacitor connected in parallel with the main switch diode or main diode of the converter and an additional capacitor (designated a `flying´ capacitor) connected through an auxiliary diode parallel to the inductor and through an extra auxiliary diode parallel to the main diode of the converter. The unified analysis of steady-state processes in a generalized AASS converter, carried out in this investigation, is applicable to various PWM topologies. A design procedure for optimization of AASS parameters is developed. Experimental investigation (a boost DC-DC converter 130/380 V, 1.1 kW, switching frequency 100...160 kHz) confirmed the results of the theoretical analysis

Keywords

DC-DC power convertors; PWM power convertors; circuit optimisation; circuit testing; network analysis; power capacitors; power inductors; power semiconductor diodes; power semiconductor switches; switching circuits; 1.1 kW; 100 to 160 kHz; 130 V; 380 V; ZVS PWM power converters; auxiliary diode; auxiliary switch components; boost DC-AC power converter; design procedure; flying capacitor; inductor; optimization; steady-state processes; switching frequency; unified analysis; Capacitors; Design optimization; Diodes; Inductors; Pulse width modulation; Pulse width modulation converters; Steady-state; Switches; Switching converters; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1995. APEC '95. Conference Proceedings 1995., Tenth Annual

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2482-X

Type

conf

DOI

10.1109/APEC.1995.468994

Filename

468994