Title :
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
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;
Conference_Titel :
Industry Applications Society Annual Meeting, 2008. IAS '08. IEEE
Conference_Location :
Edmonton, Alta.
Print_ISBN :
978-1-4244-2278-4
Electronic_ISBN :
0197-2618
DOI :
10.1109/08IAS.2008.345
