Title :
The influence of double excitation AC/DC in the reactive power demand of 3-phase transformers
Author :
Rossi, Jose Carlos ; De Oliveira, Luis Carlos Origa ; Ferreira, Marco A S
Author_Institution :
UNESP, Sao Paulo, Brazil
Abstract :
In this work the authors discuss the performance of the reactive power demand in a three-leg transformer core and a three-phase transformer bank, under different conditions of AC/DC double excitation. In order to analyse the influence of double excitation in reactive power theoretically, a mathematical model was developed considering the mutual coupling between phases and the magnetic nonlinearity. The validity of the proposed model is verified by means of the experimental and simulated results
Keywords :
power transformers; reactive power; transformer cores; transformer magnetic circuits; AC/DC double excitation; magnetic nonlinearity; mathematical model; mutual coupling; reactive power demand; three-leg transformer core; three-phase transformer bank; Magnetic analysis; Magnetic cores; Magnetic flux; Mathematical model; Phase transformers; Power demand; Reactive power; Saturation magnetization; Transformer cores; Voltage;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867740
