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Terry's DRSSTC - Cross Conduction test
- To: tesla@xxxxxxxxxx
- Subject: Terry's DRSSTC - Cross Conduction test
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Tue, 01 Feb 2005 19:32:59 -0700
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- Resent-date: Tue, 1 Feb 2005 19:32:53 -0700 (MST)
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Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
Hi All,
I tried taking out the cross conduction delay capacitors. I ran off
batteries at first then gave it a little juice:
http://drsstc.com/~terrell/pictures/NoCrossDelay-01.gif
Now the transitions are sharp!!
http://drsstc.com/~terrell/pictures/NoCrossDelay-02.gif
Yea!! Close to 2000V/uS!! Ok, that is in the "not a good idea" territory
=:O The switching made a little noise now... So the controller "can" run
the IGBTs faster than is smart... The box ran solid and the fast
transition noise did not seem to hurt anything. So the thing can take some
little cross conduction and stupidly high switching speeds....
No damage was done and the delay caps are going right back in!! ;-))
Cheers,
Terry