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- Title
Reduction of Transformer Transient Inrush Current by Step Voltage Method.
- Authors
Fathollahi FARD, Ali Asghar
- Abstract
When a transformer is energized by the supply voltage, a high current called transient inrush current which it may raise to ten times of the transformer full load current could be drawn by the primary winding. This paper discusses a microcontroller circuit with the intention of controlling and limiting the inrush current for a transformer by the method of ramping up the supply voltage feeding to the transformer primary side. Simulations and the experimental results show a significant reduction of inrush current when a three-phase ramping voltage switching is applied to the three-phase transformer load. Inrush current could be almost eliminated if choosing a correct switching step rate.
- Subjects
ELECTRIC transformers; ELECTRIC currents; ELECTRIC potential; MICROCONTROLLERS; SIMULATION methods &; models; MECHANICAL loads
- Publication
Acta Electrotehnica, 2013, Vol 54, Issue 1, p22
- ISSN
1841-3323
- Publication type
Article