Title :
Loss optimizing low power 50 Hz transformers intended for AC/DC standby power supplies
Author_Institution :
Tech. Univ. Denmark, Lyngby, Denmark
Abstract :
This paper presents the measured efficiency on selected low power conventional 50 Hz/230 V-AC transformers. The small transformers are intended for use in 1 W@5 V-DC series- or buck-regulated power supplies for standby purposes. The measured efficiency is compared for cheap off-the-self transformer and for some which are optimized for a lower no-load loss. The optimization is done by simple and low cost means.
Keywords :
AC-DC power convertors; emergency power supply; optimisation; transformers; 1 W; 230 V; 5 V; 50 Hz; AC/DC standby power supplies; buck-regulated power supplies; loss optimisation; low power transformers; Cost function; Electrical equipment industry; Emergency power supplies; Loss measurement; Manufacturing; Power measurement; Power supplies; Sheet materials; Switches; Transformer cores;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE
Print_ISBN :
0-7803-8269-2
DOI :
10.1109/APEC.2004.1295843
