Improved Modeling of Three-Phase Transformer Analysis Based on Nonlinear B-H Curve and Taking Into Account Zero-sequence Flux.

The present paper deals with a new approach for the study of the steady - state and transient behaviour of three- phase transformers. This approach based on magnetic equivalent circuit diagrams, takes into account the nonlinear B-H curve as well as zero-sequence flux. The nonlinear B-H curve is represented by a Fourier series, based on a set of measurement data. For the numerical simulations, two methods have been developed, by considering the total magnetic flux respectively the currents as state variables. Numerical results compared with test results and with FEM computations confirm tvalidity of the proposed approach.


Presented at:
ICEM 2004, Cracow, September, 2004
Year:
2004
Keywords:
Laboratories:




 Record created 2009-01-09, last modified 2018-03-17

n/a:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)