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Old 04-26-2011, 03:49 PM   #4661 (permalink)
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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.
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Old 04-26-2011, 10:15 PM   #4662 (permalink)
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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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Old 04-27-2011, 01:23 AM   #4663 (permalink)
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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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Old 04-27-2011, 05:06 AM   #4664 (permalink)
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Nice one! I'm about to start building one! Thanks so much !!!
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Old 04-27-2011, 04:54 PM   #4665 (permalink)
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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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Old 04-27-2011, 05:25 PM   #4666 (permalink)
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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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Old 04-28-2011, 12:34 PM   #4667 (permalink)
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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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Old 04-28-2011, 12:51 PM   #4668 (permalink)
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Quote:
Originally Posted by Freyguy View Post
"....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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Old 04-28-2011, 06:04 PM   #4669 (permalink)
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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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Old 04-28-2011, 06:29 PM   #4670 (permalink)
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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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