Practical validation for the frequency domain approach to study the thermal behavior of transformers under nonsinusoidal operation conditions

Author

Delaiba, Antonio C. ; De Oliveira, José C. ; Cardoso, José R. ; Ribeiro, Paulo F.

Author_Institution

Dept. of Electr. Eng., Fed. Univ. of Uberlandia, Brazil

Volume

2

fYear

1998

fDate

14-18 Oct 1998

Firstpage

946

Abstract

This paper is focused in the direction of practical and theoretical aspects of thermal performance of transformers under distorted operating conditions. Using the superposition method, the thermal conditions are estimated through the frequency domain technique. To validate the theoretical results, practical measurements are made using a 15 kVA transformer prototype supplying a 6 pulse rectifier. The results are then used to validate the proposed method to investigate transformer thermal behavior

Keywords

harmonic distortion; power supply quality; power system harmonics; power transformers; rectifying circuits; thermal analysis; 15 kVA; 6 pulse rectifier; eddy current losses; frequency domain approach; harmonic distortion; hysteresis losses; nonsinusoidal operation conditions; power quality; power transformers; superposition method; thermal behavior; thermal conditions estimation; transformer thermal behavior; winding losses; Distortion measurement; Eddy currents; Frequency domain analysis; Magnetic hysteresis; Pollution measurement; Power system harmonics; Pulse measurements; Pulse transformers; Rectifiers; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Harmonics and Quality of Power Proceedings, 1998. Proceedings. 8th International Conference On

Conference_Location

Athens

Print_ISBN

0-7803-5105-3

Type

conf

DOI

10.1109/ICHQP.1998.760169

Filename

760169