Spanningsverdeling tussen seriegekoppelde hoogspanning - skakelelemente tydens oorgangstoestande
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie/South African Journal of Science and Technology
| Field | Value | |
| Title | Spanningsverdeling tussen seriegekoppelde hoogspanning - skakelelemente tydens oorgangstoestande Transient voltage sharing in series-coupled high voltage switches | |
| Creator | Office, Editorial | |
| Description | Wanneer hoogspanningskakelaars wat in minder as 1 µs aan en af moet skakel nodig is, is die neiging deesdae om serie - geskakelde halfgeleiers eerderas gasontladingsbuise, soos bv. tiratrons, te gebruik. For switching voltages in excess of the maximum blocking voltage of a switching element (for example, thyristor, MOSFET or bipolar transistor) such elements are often coupled in series - and additional circuitry has to be provided to ensure equal voltage sharing. Between each such series element and system ground there is a certain parasitic capacitance that may draw a significant current during high-speed voltage transients. The "open" switch is modelled as a ladder network. Analysis reveals an exponential progression in the distribution of the applied voltage across the elements. Overstressing thus occurs in some of the elements at levels of the total voltage that are significantly below the design value. This difficulty is overcome by grading the voltage sharing circuitry, coupled in parallel with each element, in a prescribed manner, as set out here. | |
| Publisher | AOSIS | |
| Date | 1992-07-08 | |
| Identifier | 10.4102/satnt.v11i1.517 | |
| Source | Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 11, No 1 (1992); 24-27 Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 11, No 1 (1992); 24-27 2222-4173 0254-3486 | |
| Language | eng | |
| Relation |
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:
https://journals.satnt.aosis.co.za/index.php/satnt/article/view/517/928
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