04-26-2011, 04:49 PM
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#4661 (permalink)
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Master EcoModder
Join Date: Sep 2009
Location: Ireland
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Anyone interested in an igbt power stage should read this document:
http://www.evbmw.com/igbt.pdf
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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04-26-2011, 11:15 PM
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#4662 (permalink)
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EcoModding Apprentice
Join Date: Mar 2011
Location: alaska
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how much of that did you follow? i see that in their document they have two big planes for the bus bars that connect the igbt's, and yours are only parallel bars. they also spread their igbt's out for better heat sinking, but i had read that it was better to mount them as close to each other as possible, so that the devices drawing more current would heat up and bring the adjacent ones up to temperature as well. just curious, your design looks great. i'm probably gonna build something really close to it here pretty soon. i'm thinking that i'm gonna go with a larger number of smaller capacitors though, to try to keep the overall size of the box down some.
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04-27-2011, 02:23 AM
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#4663 (permalink)
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PaulH
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
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Hurray! I tested the 1000amp controller in the car. Everything worked just right! It felt very smooth. I was a little worried about the new current sensor, but it was friggen perfect. Well, I didn't push it too hard. That's on accounta I's real scared, Mars Tom...:
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04-27-2011, 06:06 AM
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#4664 (permalink)
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EcoModding Lurker
Join Date: Apr 2011
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Nice one! I'm about to start building one! Thanks so much !!!
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04-27-2011, 05:54 PM
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#4665 (permalink)
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EcoModding Apprentice
Join Date: Feb 2010
Location: Northern Wisconsin
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OK - So I got to download the test drive ( a feat on dialup! - Er speaking of feet nice New Balance shoes - the only kind I wear !) That went smooth and was fun to ride around the block! 
The arrows on the street are interesting too...
Nice Job!!! 
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Dave  ...
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04-27-2011, 06:25 PM
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#4666 (permalink)
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Master EcoModder
Join Date: Sep 2009
Location: Ireland
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You know those odysseys can easilly hold 1000amps for 60 seconds
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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04-28-2011, 01:34 PM
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#4667 (permalink)
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EV Builder
Join Date: Nov 2010
Location: Macungie, PA
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"....I made a little current sensor board that actually works...what's that all about!" LOL.
Paul, you are the most humble man I know
Excellent work!! |
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04-28-2011, 01:51 PM
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#4668 (permalink)
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Joe
Join Date: Feb 2009
Location: phx
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Quote:
Originally Posted by Freyguy
"....I made a little current sensor board that actually works...what's that all about!" LOL.
Paul, you are the most humble man I know
Excellent work!! |
I concur - good work Paul! |
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04-28-2011, 07:04 PM
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#4669 (permalink)
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EcoModder
Join Date: Mar 2010
Location: New Zealand
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Loved the video, kept wanting you to put your foot down! But I did wonder why you were driving on the wrong side of the road.......
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Sometimes I sits and thinks and sometimes I just sits.
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04-28-2011, 07:29 PM
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#4670 (permalink)
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EV test pilot
Join Date: Jan 2008
Location: Oconomowoc, WI, USA
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I finally got to watch Paul's latest video in post 4719.
That is SO TEMPTING to crank the amps in an old VW Bug!
One thing that I don't like about my Electro-Metro is that front-wheel drive is just NOT as good for burn-outs.
Maybe we all need to build Paul a new coupler to be able to push the power through!
NEDRA, here we come!
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