Standby power supply with high frequency isolation

Author

John, Vinod ; Mohan, Ned

Author_Institution

Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA

Issue

0

fYear

1995

Firstpage

990

Abstract

Standby power supplies (SPS) are widely used as power backup systems for critical electrical loads. A single phase SPS utilizing a high frequency AC link is studied. Use of a high frequency transformer results in a compact and light weight system. Energy loss introduced in the system due to the high frequency AC link is analyzed. Design of the control circuit, to obtain a sinusoidal output voltage with linear and nonlinear loads, is explained. The SPS is used as an active filter to obtain sinusoidal line current under normal conditions of the utility

Keywords

active filters; electric current control; emergency power supply; high-frequency transformers; losses; voltage control; active filter; control circuit design; critical electrical loads; energy loss; high frequency AC link; high frequency isolation; high frequency transformer; linear loads; nonlinear loads; power backup systems; sinusoidal line current; sinusoidal output voltage; standby power supply; Active filters; Batteries; Circuits; Emergency power supplies; Frequency conversion; Power harmonic filters; Pulse width modulation; Pulse width modulation inverters; Switches; Switching frequency;

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.1995.469061

Filename

469061