A novel high efficiency UPS using improved inverter and DC to DC converter

Author

Eishima, Yoshinori ; Jinno, Masahito ; Tominaga, Fukutoshi ; Sakamoto, Hiroshi ; Harada, Koosuke

Author_Institution

Nishimu Electronics Ind. Co. Ltd., Fukuoka, Japan

fYear

1991

fDate

5-8 Nov 1991

Firstpage

595

Lastpage

600

Abstract

The uninterruptible power supply (UPS) presented combines a rectifier of high input power factor, a DC/DC power converter and a pulsewidth-modulated (PWM) inverter. However, in the inverter circuit, because a divided choke snubber was devised, short circuit failure can be avoided without giving the drive pulse of switching element a dead time period. Also because an LD snubber was designed, the current surge and the voltage surge do not occur. The performance of the switched snubber, the effectiveness of the LD snubber and of the divided choke snubber were verified by the experiments. Experimental results of testing these schemes are reported

Keywords

invertors; power convertors; rectifiers; uninterruptible power supplies; DC/DC power converter; LD snubber; PWM; UPS; divided choke snubber; efficiency; inverter; performance; power factor; rectifier; testing; uninterruptible power supply; Circuits; Inductors; Pulse inverters; Pulse width modulation converters; Pulse width modulation inverters; Pulsed power supplies; Rectifiers; Snubbers; Surges; Uninterruptible power systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, 1991. INTELEC '91., 13th International

Conference_Location

Kyoto

Print_ISBN

0-87942-670-5

Type

conf

DOI

10.1109/INTLEC.1991.172455

Filename

172455