Synchronous active rectifier-assisted soft-switching PWM DC-DC power converter with high-frequency link

Author

Morimoto, Takeshi ; Shirakawa, Shinya ; Gamage, L. ; Omae, Syuji ; Nakaoka, Mutsuo

Author_Institution

Graduate Sch. of Sci. & Eng., Yamaguchi Univ., Japan

Volume

2

fYear

1999

fDate

1999

Firstpage

978

Abstract

This paper presents a novel prototype topology of soft-switching PWM DC-DC power converter using synchronous active power switches in series with each rectifier diode in high-frequency transformer secondary side. This DC-DC power converter circuit with isolated transformer link, which is suitable for high-power applications, can completely achieve zero-voltage soft-switching under the condition of no freewheeling current operation and wide load variations. Using the proposed soft-switching PWM DC-DC power converter, switching losses of active power devices and their conduction losses are able to be both reduced as compared with the previously-developed soft-switching DC-DC power converter with a phase-sifted PWM in the high-frequency transformer primary side. The steady-state operating characteristics of the proposed power converter circuit and its unique features are illustrated and discussed on the basis of the simulation analysis and some experimental results of 2 kW 40 kHz breadboard

Keywords

DC-DC power convertors; PWM power convertors; high-frequency transformers; losses; power semiconductor diodes; rectifying circuits; switching circuits; 2 kW; 40 kHz; ZVS; active power devices; conduction losses; high-frequency link; high-frequency transformer primary side; high-frequency transformer secondary side; isolated transformer link; rectifier diode; rectifier-assisted DC-DC converter; simulation analysis; soft-switching PWM DC-DC power converter; steady-state operating characteristics; switching losses reduction; synchronous active DC-DC converter; synchronous active power switches; zero-voltage soft-switching; Circuit topology; DC-DC power converters; Diodes; Load management; Prototypes; Pulse width modulation; Pulse width modulation converters; Rectifiers; Steady-state; Switching loss;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems, 1999. PEDS '99. Proceedings of the IEEE 1999 International Conference on

Print_ISBN

0-7803-5769-8

Type

conf

DOI

10.1109/PEDS.1999.792841

Filename

792841