If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.
Special Thanks To:
Aaron Holmes
Aaron Wheeler
Adam Horden
Alan Scrimgeour
Andre
Andrew Haynes
Anonymous000
asabase
Austin Weil
barney
Barry
Bert Hickman
Bill Kukowski
Blitzorn
Brandon Paradelas
Bruce Bowling
BubeeMike
Byong Park
Cesiumsponge
Chris F.
Chris Hooper
Corey Worthington
Derek Woodroffe
Dalus
Dan Strother
Daniel Davis
Daniel Uhrenholt
datasheetarchive
Dave Billington
Dave Marshall
David F.
Dennis Rogers
drelectrix
Dr. John Gudenas
Dr. Spark
E.TexasTesla
eastvoltresearch
Eirik Taylor
Erik Dyakov
Erlend^SE
Finn Hammer
Firebug24k
GalliumMan
Gary Peterson
George Slade
GhostNull
Gordon Mcknight
Graham Armitage
Grant
GreySoul
Henry H
IamSmooth
In memory of Leo Powning
Jacob Cash
James Howells
James Pawson
Jeff Greenfield
Jeff Thomas
Jesse Frost
Jim Mitchell
jlr134
Joe Mastroianni
John Forcina
John Oberg
John Willcutt
Jon Newcomb
klugesmith
Leslie Wright
Lutz Hoffman
Mads Barnkob
Martin King
Mats Karlsson
Matt Gibson
Matthew Guidry
mbd
Michael D'Angelo
Mikkel
mileswaldron
mister_rf
Neil Foster
Nick de Smith
Nick Soroka
nicklenorp
Nik
Norman Stanley
Patrick Coleman
Paul Brodie
Paul Jordan
Paul Montgomery
Ped
Peter Krogen
Peter Terren
PhilGood
Richard Feldman
Robert Bush
Royce Bailey
Scott Fusare
Scott Newman
smiffy
Stella
Steven Busic
Steve Conner
Steve Jones
Steve Ward
Sulaiman
Thomas Coyle
Thomas A. Wallace
Thomas W
Timo
Torch
Ulf Jonsson
vasil
Vaxian
vladi mazzilli
wastehl
Weston
William Kim
William N.
William Stehl
Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Registered Member #139
Joined: Sat Feb 11 2006, 11:01AM
Location: Perth, Western Australia
Posts: 358
Look what I scored! 2 x 600V 300A and 4 x 600V 200A Bricks on monster heatsinks. They are where actually used as inverters in a windfarm here at work. Outstanding. I have tried driving them from a 1:2:2 GDT with no luck, I believe the gates are 30V?? ANY help whatsoever on how to drive these suckers would be appreciated. Is it worth getting some little n-channels, and then driving it directly from my SSTC board?
Registered Member #139
Joined: Sat Feb 11 2006, 11:01AM
Location: Perth, Western Australia
Posts: 358
Yes they do Fuji 2MBI200, and Fuji 2MBI300 if thats any help. Should I be looking at the "Gate-Emitter Threshold Voltage" to determine the drive voltage needed? (Datasheets are not my Forte) If this is the case, the datasheet states 4.5-7.5 Volts. Why do you guys drive them at 30+V?
Registered Member #146
Joined: Sun Feb 12 2006, 04:21AM
Location: Austin Tx
Posts: 1055
You do not need to drive them at 30V. Only some of us drive our IGBTs at 30V, and this is because is lowers the saturation (Vce) voltage so we can pulse even higher currents. If you just want to test if they switch, simply putting a 9V battery across the G_S terminals (+ to gate) will turn the IGBT on. You will have to discharge the gate C with a resistor (or reversing the battery polarity) to shut it off. This is how i test any IGBT bricks i get ahold of... at least as an initial test of functionality.
As Vasil mentions, those IGBTs arent particularly fast, they would probably not support anything greater than 50khz operation, and even that would be lossy with hard switching due to switching delays.
Registered Member #139
Joined: Sat Feb 11 2006, 11:01AM
Location: Perth, Western Australia
Posts: 358
I was thinking a very low fres coil anyway. TcCad reckons on about 50-60Khz, but I reckon about 30 bearing on previous uses of the software.
And how did you get 10-20KHz?
wrote ... If you just want to test if they switch, simply putting a 9V battery across the G_S terminals (+ to gate) will turn the IGBT on. You will have to discharge the gate C with a resistor (or reversing the battery polarity) to shut it off. This is how i test any IGBT bricks i get ahold of... at least as an initial test of functionality.
Registered Member #99
Joined: Thu Feb 09 2006, 06:10PM
Location: florida, usa
Posts: 637
Desmo wrote ...
I was thinking a very low fres coil anyway. TcCad reckons on about 50-60Khz, but I reckon about 30 bearing on previous uses of the software.
And how did you get 10-20KHz?
wrote ... If you just want to test if they switch, simply putting a 9V battery across the G_S terminals (+ to gate) will turn the IGBT on. You will have to discharge the gate C with a resistor (or reversing the battery polarity) to shut it off. This is how i test any IGBT bricks i get ahold of... at least as an initial test of functionality.
Perfect information, as usual from this site!
Perhaps a KILLER flyback driver?Or see if they sell on ebay and buy some ones more suitable?
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.
Score!!
