Paul & Sabrina's cheap DIY 144v motor controller

[MPaulHolmes]

No you don't need to add the capacitor.. I included it with all three. You are probably right about the 400amp igbts. As long as they are well balanced, it would probably be ok. Don't forget that you can up your voltage to 350v or so if it gets boring. Btw, I think I need to send you an updated hex file because your overtemperature protection will just disable rather than throttle back. I noticed the mistake a few days ago.

[Astro]

Originally Posted by MPaulHolmes

I was thinking of calling it "The Stinky Diaper", because it's inappropriate and unprofessional, and I change a lot of diapers. If that sounds like a bad idea, I'm open to suggestions. haha. I'm horrible at coming up with names.

Is this controller main board going to be used for both the DC and AC versions?
If so then some sort of unifying name might be appropriate.

One
Unity
Fusion
Fuse


Add in whatever prefix you like, ReVolt or whatever.

Originally Posted by MPaulHolmes

... the 3 IGBTs aren't cheap anymore. There are some Littelfuse igbts that are rated for 400amp and are fairly cheap from Mouser ($150 each). The 600amp powerex modules are $257 each. dang it.

Found a six pack of CM600DY-12NF for about USD$584. Only one pack left though but that makes it under USD$100 per module. Not sure what the shipping is from Argentina though or even if they ship international. Google translate is good but not perfect.

I am so glad i shipped Paul the box of modules right at the beginning of starting my EV conversion. At the time i thought maybe i should hold off as most electronics get cheaper with time but not these modules. I should have bought a boatload of them.

[Astro]

Originally Posted by MPaulHolmes

...the 3 IGBTs aren't cheap anymore. There are some Littelfuse igbts that are rated for 400amp and are fairly cheap from Mouser ($150 each). The 600amp powerex modules are $257 each. dang it.

Would these do?

Mitsubishi Power X CM400DU 12F 1GBT Igbt Module 400A 600V | eBay USD$60 each

Slightly cheaper in six packs.
Mitsubishi Power X CM400DU 12F 1GBT Igbt Module 400A 600V Case OF 6 Units | eBay USD$350 for six

[jedsmd]

Originally Posted by MPaulHolmes

No you don't need to add the capacitor.. I included it with all three. You are probably right about the 400amp igbts. As long as they are well balanced, it would probably be ok. Don't forget that you can up your voltage to 350v or so if it gets boring. Btw, I think I need to send you an updated hex file because your overtemperature protection will just disable rather than throttle back. I noticed the mistake a few days ago.

Okay overtemp has not been a problem so far but fixing the software would be good.

Also we discussed having the software pull the main contactor if the power section failed shorted.
http://ecomodder.com/forum/451143-post6898.html"]

[Astro]

Originally Posted by Astro

Would these do?
Mitsubishi Power X CM400DU 12F 1GBT Igbt Module 400A 600V | eBay USD$60 each
Slightly cheaper in six packs.
Mitsubishi Power X CM400DU 12F 1GBT Igbt Module 400A 600V Case OF 6 Units | eBay USD$350 for six

I had a look at the specs and noticed that the CM400DU doesn't have as high a maximum collector temperature dissipation. 960W for the CM400DU compared to 1130W for the CM400DY. It looks like the CM400DU's terminals have less surface area, this may contribute to the poorer temperature dissipation?
Something to keep in mind for those people that haven't yet purchased their IGBT's.

[MPaulHolmes]

The hoonatic racing car is using a controller I made a couple years ago. This year he added his own bootleg supercharger. Haha

https://m.youtube.com/watch?feature=...&v=8MgLsygHlGs

[duncan]

I liked that - it's a charger that is even worse than the one I use

[thingstodo]

Since I don't have a working electric car, I don't feel right criticizing someone who DID get theirs running.

It DID look like they left some critical parts at home and had to make do with that they could find ...

[MPaulHolmes]

The rules are that the whole car has to be under $500, so not too shabby given that constraint. Haha

[duncan]

Under $500?? - that's impressive