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Investigation of very fast transient overvoltage distribution in taper winding of tesla transformer

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2 Author(s)
Peng Ying ; Sch. of Electr. Eng., Wuhan Univ., Hubei, China ; Ruan Jiangjun

In order to study the very fast transient overvoltage (VFTO) distribution in the taper winding of a tesla transformer under high-frequency steep-fronted voltage surge, we built a distributed line model based on multiconductor transmission line (MTL) theory. We used a new hybrid algorithm combining finite-element-method (FEM) and interpolation formulas to quickly evaluate the induction coefficient matrix K by utilizing some characteristics of the taper structure. The turn-to-ground and interturn voltage distributions can be obtained by solving the telegraphist's equations in the frequency domain. We measured the voltage distribution inside the taper winding to find some ways to weaken the voltage oscillations. Here, we compare the results with numerical values.

Published in:

Magnetics, IEEE Transactions on  (Volume:42 ,  Issue: 3 )