Abstract
This paper concerns the thyristors used in electromagnetic coilguns as switching elements for discharging capacitors through the drive coils. In an electromagnetic launcher, the di/dt requirement may exceed 4000 A/μsec. Today, off-the-shelf thyristors can handle only up to 1000 A/μsec. An analytical/experimental study was conducted in which a saturable reactor was inserted into a drive-coil circuit in order to reduce the rate-of-rise of current during turn-on at a relatively high frequency of about 10 kHz. The reactor functions by being effective only during the turn-on time, then saturates, thus removing itself from the circuit. This paper presents laboratory test results for several different sizes of toroidal cores, describes the computer simulation of a one-drive-coil circuit with saturable reactor, and includes detailed guidelines for selecting a magnetic core.
| Original language | English (US) |
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| Pages | 776-779 |
| Number of pages | 4 |
| State | Published - 1993 |
| Event | Proceedings of the 1993 9th IEEE International Pulsed Power Conference. Part 2 (of 2) - Albuquerque, NM, USA Duration: Jun 21 1993 → Jun 23 1993 |
Other
| Other | Proceedings of the 1993 9th IEEE International Pulsed Power Conference. Part 2 (of 2) |
|---|---|
| City | Albuquerque, NM, USA |
| Period | 6/21/93 → 6/23/93 |
ASJC Scopus subject areas
- General Engineering