Title :
A novel soft-switching DC-DC power converter with high-frequency transformer secondary-side phase shifted PWM active rectifier
Author :
Morimoto, Takeshi ; Shirakawa, Shinya ; Hiraki, Eiji ; Nakaoka, Mutsuo
Author_Institution :
Div. of Electr. Syst., Yamaguchi Univ., Japan
Abstract :
This paper presents a novel prototype 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 high-efficient soft-switching DC-DC power converter topology with transformer link that is suitable for high-power applications can completely achieve 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 both reduced as compared with the previously-developed soft-switching PWM DC-DC converter. 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 results of 2 kW-40 Hz experimentation
Keywords :
DC-DC power convertors; PWM power convertors; high-frequency transformers; losses; rectifying circuits; switching circuits; 2 kW; 40 kHz; conduction losses; high-frequency transformer; high-frequency transformer secondary side; phase shifted PWM active rectifier; rectifier diode; soft-switching DC-DC power converter; steady-state operating characteristics; switching losses; synchronous active power switches; wide load variations; DC-DC power converters; Diodes; Load management; Prototypes; Pulse width modulation; Pulse width modulation converters; Rectifiers; Switching converters; Switching loss; Topology;
Conference_Titel :
Telecommunication Energy Conference, 1999. INTELEC '99. The 21st International
Conference_Location :
Copenhagen
Print_ISBN :
0-7803-5624-1
DOI :
10.1109/INTLEC.1999.794032
