Title :
Standby power supply with high frequency isolation
Author :
John, Vinod ; Mohan, Ned
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
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;
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
DOI :
10.1109/APEC.1995.469061
