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Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Avalanche wrote ...
some old inverters I'm repairing at work at the moment have a variable DC link that uses a phase angle controlled rectifier arrangement. The inrush is limited simply by soft-starting the phase angle controlled bit. It's a fairly neat overall setup if the variable DC bus is of any use as well!
I built my last two SSTCs this way, since they both had whacking big DC bus capacitors. And yes the variable DC bus is a bonus
Other than that, +1 on Richie's comments, I've never seen a FET used for this purpose, but I've seen NTC thermistors, relays, SCRs and triacs.
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Anyone ever do inrush current limiting with a MOSFET?
