Interharmonics Power Losses Estimation in Power Transformer fed High Power Cycloconverter Drive

Author

Martin, J. San ; Pontt, J. ; Bello, F. ; Aguilera, R.

Author_Institution

Dept. of Electron., Tech. Univ. Federico Santa Maria, Valparaiso

fYear

2008

fDate

5-9 Oct. 2008

Firstpage

1

Lastpage

5

Abstract

High power cycloconverter (CCV) fed drives are widely used in mining plants for ore processing. Actually, transformers for CCV are manufactured under IEEE Standards for rectifier power transformers, considering harmonics losses only. However, when the drive operates at full power and variable speed, interharmonics currents can cause additional losses and overheating. In this work, the analysis of an actual CCV-drive with experimental measurements is presented, including a model for estimation of the interharmonic losses, considering the most relevant spectral components around the fundamental component. These losses are relevant and new considerations for transformer design are proposed.

Keywords

IEEE standards; cycloconvertors; electric drives; mining; power system harmonics; power transformer insulation; IEEE standards; high power cycloconverter fed drive; interharmonics currents; interharmonics power losses estimation; mining plants; ore processing; power transformer; Electronic mail; Equations; Frequency; Guidelines; Oil insulation; Ores; Power harmonic filters; Power system harmonics; Power transformers; Rectifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE

Conference_Location

Edmonton, Alta.

ISSN

0197-2618

Print_ISBN

978-1-4244-2278-4

Electronic_ISBN

0197-2618

Type

conf

DOI

10.1109/08IAS.2008.345

Filename

4659133