Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free > Open ReVolt: open source DC motor controller
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 04-03-2010, 10:30 AM   #3301 (permalink)
Master EcoModder
 
Join Date: Apr 2009
Location: Charlton MA, USA
Posts: 463

EVVette - '71 Chevy Corvette Coupe
Thanks: 31
Thanked 172 Times in 92 Posts
Quote:
Originally Posted by jackbauer View Post
We're going to need a bigger heatsink!
JACK!!

Those look familiar!!!

What kind of crazy controller are you planing?!?!?!

Each IGBT is good for 400VDC

With the parallel derating recommended by Powerx, You can push 1382A out of that bus you are building!!!

As for heat sinks, I know a place to get some good ones. You know how to get ahold of me.

What are you planning for a current sensor? The standard LEM sensor can only go to 900A....so the 4th module would be wasted. The surface mount sensor can built into a little module and code modified so you can get 1200A out of your controller.

Also, 300A per module is an over cautious derating fo the modules. Thats still 1200A for the 4. Keep them cool, and you will have a controller that can beat a Zilla!!

-Adam

__________________
www.EVVette.com - 1971 Corvette Coupe Conversion to all Electric!
www.AdamBrunette.com - Machining, CNC, Robotics and Electronics.

You can download RTD Explorer for the Cougar controllers at www.EVVette.com
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 04-03-2010, 11:04 AM   #3302 (permalink)
Master EcoModder
 
jackbauer's Avatar
 
Join Date: Sep 2009
Location: Ireland
Posts: 734
Thanks: 26
Thanked 296 Times in 168 Posts
Busbars done. I call it the "Bauer-con-1K-LV"
Attached Thumbnails
Click image for larger version

Name:	con5.jpg
Views:	140
Size:	102.8 KB
ID:	5903   Click image for larger version

Name:	con6.jpg
Views:	121
Size:	92.5 KB
ID:	5904  
__________________
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
  Reply With Quote
Old 04-03-2010, 12:02 PM   #3303 (permalink)
Custom EV Builder...
 
Join Date: Jul 2009
Location: Ohio
Posts: 57
Thanks: 8
Thanked 1 Time in 1 Post
Quote:
Originally Posted by adamj12b View Post
JACK!!

Those look familiar!!!

What kind of crazy controller are you planing?!?!?!

Each IGBT is good for 400VDC

With the parallel derating recommended by Powerx, You can push 1382A out of that bus you are building!!!

As for heat sinks, I know a place to get some good ones. You know how to get ahold of me.

What are you planning for a current sensor? The standard LEM sensor can only go to 900A....so the 4th module would be wasted. The surface mount sensor can built into a little module and code modified so you can get 1200A out of your controller.

Also, 300A per module is an over cautious derating fo the modules. Thats still 1200A for the 4. Keep them cool, and you will have a controller that can beat a Zilla!!

-Adam
Long time reader first time poster


OK First you guys are awesome

Second; Hi Adam, I may have asked before in one of our emails but why are you using IGBT's? It is my understanding,(which is limited at best when it comes to controllers), that they are hard to get to work together in parallel. Is this not true? I know the Zilla uses them but they are the TO-247 ones I think. Got to look inside a Zilla a few months back. I guess I'm trying to figure this out as far as which would be the best way to go for the "Orion"
Here is a few pics for those of you who have not seen her.
OK maybe not, ??? apparently I'm missing a security token????????
Contact me if you want to see some pics of my ground up composite build.
  Reply With Quote
Old 04-03-2010, 12:16 PM   #3304 (permalink)
Master EcoModder
 
Join Date: Apr 2009
Location: Charlton MA, USA
Posts: 463

EVVette - '71 Chevy Corvette Coupe
Thanks: 31
Thanked 172 Times in 92 Posts
Quote:
Originally Posted by wakinyantanka View Post
Long time reader first time poster


OK First you guys are awesome

Second; Hi Adam, I may have asked before in one of our emails but why are you using IGBT's? It is my understanding,(which is limited at best when it comes to controllers), that they are hard to get to work together in parallel. Is this not true? I know the Zilla uses them but they are the TO-247 ones I think. Got to look inside a Zilla a few months back. I guess I'm trying to figure this out as far as which would be the best way to go for the "Orion"
Here is a few pics for those of you who have not seen her.
OK maybe not, ??? apparently I'm missing a security token????????
Contact me if you want to see some pics of my ground up composite build.
A group of us got together and picked up all 28 modules for about $20 a piece in a group. So were working with what we have. lol

These modules will take a little consideration in putting them in parallel because you have to keep them at the same temps. Im planing a copper layer in between the copper and heat sinks to evenly spread the heat.

The nice thing about IGBT's is their high voltage ability. These can handle a battery pack with a nominal voltage of 400V!

-Adam
__________________
www.EVVette.com - 1971 Corvette Coupe Conversion to all Electric!
www.AdamBrunette.com - Machining, CNC, Robotics and Electronics.

You can download RTD Explorer for the Cougar controllers at www.EVVette.com
  Reply With Quote
Old 04-03-2010, 12:21 PM   #3305 (permalink)
Master EcoModder
 
jackbauer's Avatar
 
Join Date: Sep 2009
Location: Ireland
Posts: 734
Thanks: 26
Thanked 296 Times in 168 Posts
Other major advantage of an igbt is that it gives the ruggedness of a bipolar transistor with the ease of control of a fet.
__________________
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
  Reply With Quote
Old 04-03-2010, 01:12 PM   #3306 (permalink)
EcoModding Apprentice
 
dave koller's Avatar
 
Join Date: Feb 2010
Location: Northern Wisconsin
Posts: 137
Thanks: 32
Thanked 35 Times in 21 Posts
Awesome Jack! And Adam - whew!
__________________
Dave ...
  Reply With Quote
Old 04-03-2010, 03:38 PM   #3307 (permalink)
Custom EV Builder...
 
Join Date: Jul 2009
Location: Ohio
Posts: 57
Thanks: 8
Thanked 1 Time in 1 Post
Quote:
Originally Posted by adamj12b View Post
A group of us got together and picked up all 28 modules for about $20 a piece in a group. So were working with what we have. lol

These modules will take a little consideration in putting them in parallel because you have to keep them at the same temps. Im planing a copper layer in between the copper and heat sinks to evenly spread the heat.

The nice thing about IGBT's is their high voltage ability. These can handle a battery pack with a nominal voltage of 400V!

-Adam
So it's a matter of keeping the temp the same on all of the igbt's then. This allows them to flow the same amount of current for each parallel unit. I think I mentioned once that someone told me paralleling igbt's is like trying to get a team of cats to pull in the same direction, conversely a group of mosfets is like a team of Clydesdale horses. It has to be due to temp variations.
I think I'm going to go with the fets because my pack voltage is only 144v. I'm just waiting for Paul to get that SR unit going so I can start my build.
  Reply With Quote
Old 04-03-2010, 06:11 PM   #3308 (permalink)
AC-DC enthusiast
 
mrbigh's Avatar
 
Join Date: Nov 2009
Location: Long Island, NY
Posts: 282

Dual-PWR PHEV - '04 Toyota Prius

Kopper - '79 Bradley Bradley GT-II
Thanks: 122
Thanked 52 Times in 36 Posts
Exclamation

As wakinyantanka, I'm also waiting for Paul's "SR" controller to be finish.
Mean while, my power stage parts are awaiting on a green environment for a green cause.
Amazingly, Jack's and I had the same IGBTs configuration idea, mine plus a finned additional heat sink
Attached Thumbnails
Click image for larger version

Name:	DSCN1932.JPG
Views:	171
Size:	92.4 KB
ID:	5914  
__________________
. .. .. . .......
Prius Absolutum Dominium . ..........KOPPER
PHEV conversion since Dec 2006.. . .... .Future EV
. . . . . . . .CALCars # 27. . . . . . . . . . ..on the works now !!
. . . . . . . . . . . . . . . . .. . ........
  Reply With Quote
Old 04-03-2010, 10:32 PM   #3309 (permalink)
EcoModding Lurker
 
Join Date: Nov 2009
Location: Melbourne Australia
Posts: 23
Thanks: 4
Thanked 2 Times in 1 Post
Quote:
Originally Posted by adamj12b View Post
A group of us got together and picked up all 28 modules for about $20 a piece in a group. So were working with what we have. lol
-Adam
Wow thats a really good price. I'd be happy to buy 4 at that price! Is there any chance that another group buy is going to be run? or modules available at a decent price - i'd definitely be interested.
  Reply With Quote
Old 04-03-2010, 10:44 PM   #3310 (permalink)
Master EcoModder
 
Join Date: Apr 2009
Location: Charlton MA, USA
Posts: 463

EVVette - '71 Chevy Corvette Coupe
Thanks: 31
Thanked 172 Times in 92 Posts
Yes, I believe that we will be doing another group buy for these. They will be slightly higher price. Maybe $10 more each max. Shipping to Australia wont be cheep though. It was $45 USD to ship them to Jack in Ireland. I would expect the same. I will add you to the list for 4 and give the total needed to be filled tomorrow. I got to got to bed now, I have a pounding headache. Goodnight!

-Adam

__________________
www.EVVette.com - 1971 Corvette Coupe Conversion to all Electric!
www.AdamBrunette.com - Machining, CNC, Robotics and Electronics.

You can download RTD Explorer for the Cougar controllers at www.EVVette.com

Last edited by adamj12b; 04-03-2010 at 10:44 PM.. Reason: Wrong Country....
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control MPaulHolmes Fossil Fuel Free 3471 06-01-2020 10:53 PM
Paul & Sabrina's Cheap EV Conversion MPaulHolmes Fossil Fuel Free 542 11-12-2016 09:09 PM
Three Dirt Cheap DIY Electric Cars - Part 5 SVOboy EcoModder Blog Discussion 0 12-12-2008 04:10 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com