The effects of linear and nonlinear operation modes in transformers

Author

Taci, M. Sali ; Domijan, Alexander

Author_Institution

Dept. of Electr. Eng., Yildiz Tech. Univ., Istanbul, Turkey

fYear

2004

fDate

12-15 Sept. 2004

Firstpage

244

Lastpage

249

Abstract

The work presented In this work deals with the effects of four modes of transformer operation, namely, non(sinusoidal) source voltage and non(linear) loads. The results are presented and compared with the experimental results of the actual values of the excitation current THD, core voltage THD, K Rating, harmonic loss factor and efficiency on a loaded single phase two winding transformer that are computed using online measurements from the primary and secondary sides. K rated transformers are designed for power harmonic generating loads by manufacturers that carry additional harmonic currents, so iron losses or copper losses can be decreased and efficiency can be increased. For this reason, a nonlinear overload is supplied without overheating, excessive voltage distortion and exceeding the specified capacity of the transformer.

Keywords

copper; eddy current losses; harmonic distortion; heat losses; iron; power transformers; transformer cores; transformer windings; K rated transformers; THD; copper losses; core voltage; harmonic loss factor; iron losses; linear load; linear operation mode; loaded single phase two winding transformer; nonlinear load; nonlinear operation mode; nonsinusoidal source voltage; online measurements; power harmonic generating loads; sinusoidal source voltage; total harmonic distortion; voltage distortion; Copper; Current measurement; Distortion measurement; Iron; Loss measurement; Manufacturing; Phase measurement; Power generation; Power system harmonics; Transformer cores;

fLanguage

English

Publisher

ieee

Conference_Titel

Harmonics and Quality of Power, 2004. 11th International Conference on

Print_ISBN

0-7803-8746-5

Type

conf

DOI

10.1109/ICHQP.2004.1409361

Filename

1409361