Abstract
A high voltage air-cored helical strip/wire type pulse transformer has been fabricated for charging of a high voltage pulse forming line. As a primary coil, copper strip of 25mm width was wound helically around a MC nylon cylinder. For a secondary coil, copper enameled wire of 1mm diameter was wound around conical cylinder in order to provide insulation between two windings. The coupling coefficient of 0.53 was obtained when two coils were combined coaxially in the insulation oil filled chamber. Voltage gain and energy transfer efficiency were investigated by varying the parameters of primary and secondary circuit. Test results shows that the voltage gain increases up to 17 with increasing the primary capacitance up to 200nF. And highest energy transfer efficiency of 44% was obtained when the dual resonant operation condition was nearly satisfied. The pulse transformer developed in this study can be used for charging the middle conductor of a Blumlein pulse forming line.
| Original language | English |
|---|---|
| Pages (from-to) | 939-944 |
| Number of pages | 6 |
| Journal | Transactions of the Korean Institute of Electrical Engineers |
| Volume | 59 |
| Issue number | 5 |
| Publication status | Published - 2010 May |
| Externally published | Yes |
Keywords
- Air-cored pulse transformer
- Dual resonance
- Energy transfer efficiency
- Helical wire/strip
- High voltage
ASJC Scopus subject areas
- Electrical and Electronic Engineering