Timeline for For a stack of thyristors, is the "critical rate of rise of off-state voltage" scalable with the number of thyristors?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Jun 8, 2019 at 17:02 | vote | accept | Lerbi | ||
| Jun 7, 2019 at 17:17 | comment | added | Harry Svensson | @Lerbi scaling linearly with the number of thyristors only work in an ideal world where all components are identical. In real life things are made in batches with varying parameters. You should try doing some monte carlo simulations with capacitors in series with varying capacitance (like 20% tolerance), or resistors, and see how different voltages you get across each of them. The important aspect that I want you to understand are the tolerances, the nonlinear real life. | |
| Jun 7, 2019 at 16:44 | history | edited | TimWescott | CC BY-SA 4.0 |
Add a caveat
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| Jun 7, 2019 at 16:43 | comment | added | TimWescott | Yes. But it's almost certain that you can't just blindly stack any old set of thyristors and have it work out right. This is, I suspect, worth at least a chapter in a book on using thyristors in HV power electronics. (Note that I'm not an expert in thyristors specifically -- I'm going to edit my answer with that, lest I lead someone astray). | |
| Jun 7, 2019 at 15:10 | comment | added | Lerbi | Hi Tim, thanks for the answer. So what you mean, then, is that if the thyristors can stay strictly balanced (which, if a large dv/dt is required, may be difficult) then the max dv/dt will scale linearly with the number of thyristors? | |
| Jun 6, 2019 at 15:43 | history | answered | TimWescott | CC BY-SA 4.0 |