Demagnetization Method for Reducing Inrush Current of Single Phase 1 kVA Transformer
Autor: | Arif Musthofa, Dedet Candra Riawan, Dicky Wahyu Darmawan, Dimas Anton Asfani, I Made Yulistya Negara, Mochammad Wahyudi, Ryan Nurdianto, Daniar Fahmi |
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Rok vydání: | 2017 |
Předmět: |
Materials science
business.industry Demagnetizing field Direct current Electrical engineering Single-phase electric power Inrush current law.invention Residual flux Control theory law lcsh:Electrical engineering. Electronics. Nuclear engineering Single phase Transformer business lcsh:TK1-9971 Voltage |
Zdroj: | JAREE (Journal on Advanced Research in Electrical Engineering), Vol 1, Iss 1 (2017) |
ISSN: | 2579-6216 2580-0361 |
Popis: | This study deals with an effort to reduce inrush current of single phase transformer during its energizing. Inrush current affected by residual flux was minimized using demagnetization method in order to reduce residual flux trapped in the core of transformer. Two methods of demagnetization namely variable frequency-constant voltage (VFCV) and variablevoltage–constant frequency (VVCF) were applied and the effectiveness of both methods were then compared. Both methods were supplied with alternated direct current (DC), however the one was changed its frequency and the other one was changed its voltage. The results obtained after transformer was demagnetized using these methods show that VFCV method educed inrush current up to 76%, on the other hand VVCF ethod reduced inrush current only up to 37%. Moreover,demagnetization time process of VFCV method was about 1.46 s, which is 1 s faster than VVCF method. |
Databáze: | OpenAIRE |
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