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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Winkler, A. Fietz, W.H. Fink, S. Noe, M. |
| Copyright Year | 2002 |
| Abstract | High-voltage insulation co-ordination of the coil system is essential for reliable operation of ITER. Transient electrical excitations occur on the terminals of superconducting coils, for example in case of a fast discharge of the coils and if a failure occurs within the components of the electrical circuit. Transient voltage on the coil terminals may lead to non-linear voltage distribution and oscillations within large superconducting coils because of their large dimensions and high number of turns. Thus, the internal voltages may even be higher than the voltages on the coil terminals. This effect depends on the rise time of the excitations and was measured within the ITER Toroidal Field Model Coil which is about three times smaller than the ITER toroidal field (TF) coil. The calculations of the transient electrical behavior of the coils provide a basis for high-voltage insulation co-ordination and definition of test voltages and waveforms. The high voltage tests during the manufacturing process will control the quality of the electrical insulation and ensure reliable operation of the coils. The transient electrical behavior of ITER poloidal field (PF) coils was calculated using the PF 3 and PF 6 coils as examples. Maximum voltages for ground, layer and turn insulation were calculated for four scenarios. Results of these calculations are presented in detail in this paper. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 9501304 |
| Ending Page | 9501304 |
| Page Count | 1 |
| File Size | 552641 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 22 |
| Issue Number | 3 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-06-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Coils Resonant frequency Insulation Discharges Transient analysis Frequency domain analysis Oscillators magnets Finite element methods and network calculations high voltage techniques |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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