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Search took 0.05 seconds. Search: Posts Made By: Electroddy
Forum: Fossil Fuel Free 02-04-2013, 05:11 PM
Replies: 60
Views: 25,074
Posted By MetroMPG
Nice to see this coming along. I've added it to...

Nice to see this coming along. I've added it to the list of projects that show up on the home page.
Forum: Fossil Fuel Free 06-14-2012, 12:38 PM
Replies: 3,480
Views: 916,324
Posted By MPaulHolmes
Just tested the AC controller with a DC bus of...

Just tested the AC controller with a DC bus of 308v (288v nominal). It worked! Hurray!! It was only on the small AC motor, which is a few amps per phase. Here's a video of it running at 84v...
Forum: Open ReVolt: open source DC motor controller 05-15-2012, 08:08 AM
Replies: 7,381
Views: 2,410,790
Posted By adamj12b
I would hope I would know.... Here's a video...

I would hope I would know....

Here's a video that I made a few months ago explaining everything.

http://www.youtube.com/watch?v=s6TlAy9lY1Q

-Adam
Forum: Open ReVolt: open source DC motor controller 04-30-2012, 12:51 PM
Replies: 7,381
Views: 2,410,790
Posted By Frxdy
Pictures! Pictures! *smile* I've been a...

Pictures! Pictures! *smile*

I've been a lurker, but recently have ordered parts and am going to see about building the 500 amp controller. Over the last week or two I have been reading this...
Forum: Open ReVolt: open source DC motor controller 04-18-2012, 07:19 AM
Replies: 7,381
Views: 2,410,790
Posted By electricstorm
You're an extraordinary human being and I applaud...

You're an extraordinary human being and I applaud you for your unselfish efforts! You have touched uncountless lives with you genorosity. Thanks for keeping this an open source project!! Keep up the...
Forum: Open ReVolt: open source DC motor controller 04-17-2012, 09:27 AM
Replies: 7,381
Views: 2,410,790
Posted By bennelson
I don't know how many of you have seen or read...

I don't know how many of you have seen or read "THE SECRET", which is a little airy-fairy, but I do believe in Karma and that when people just put out as much good as folks like Paul, that it can't...
Forum: Fossil Fuel Free 04-17-2012, 01:14 AM
Replies: 3,480
Views: 916,324
Posted By MPaulHolmes
My boards arrived today for the 200ampRMS...

My boards arrived today for the 200ampRMS (hopefully) controller. And I ordered the parts for populating the boards too. The BOM is ready to be posted to the ecomodder wiki too. Parts are in the...
Forum: Open ReVolt: open source DC motor controller 04-12-2012, 06:51 PM
Replies: 7,381
Views: 2,410,790
Posted By MPaulHolmes
The boards are supposed to get here today! But...

The boards are supposed to get here today! But they aren't here right now. It was supposed to be before noon. I'm working on the dimensions of the bus bars and base plate now and ordering it...
Forum: Fossil Fuel Free 02-20-2012, 11:56 AM
Replies: 3,480
Views: 916,324
Posted By MPaulHolmes
The software for ACIM is SOOOOOOOOO close to...

The software for ACIM is SOOOOOOOOO close to being done, and is done in the case of a permanent magnet synchronous motor. Just another day or so. And everything is correct this time. ...
Forum: Open ReVolt: open source DC motor controller 02-19-2012, 11:05 AM
Replies: 7,381
Views: 2,410,790
Posted By MPaulHolmes
Hi Jim! I got mine at circuit city. I've never...

Hi Jim! I got mine at circuit city. I've never had any trouble with it. Fran had included some delays in the code to allow for the serial to usb hardware. I think at first there were issues.
Forum: Open ReVolt: open source DC motor controller 02-14-2012, 10:37 PM
Replies: 7,381
Views: 2,410,790
Posted By adamj12b
IF the chip has been loaded with the bootloader...

IF the chip has been loaded with the bootloader already, you simply have to attach the controller to the computer with a straight through serial cable. This would be the same serial cable that would...
Forum: Open ReVolt: open source DC motor controller 01-11-2012, 04:50 PM
Replies: 7,381
Views: 2,410,790
Posted By jackbauer
Anyone who has worked with power electronics and...

Anyone who has worked with power electronics and not blown something up hasn't actually worked with power electronics.
Forum: Fossil Fuel Free 10-26-2011, 08:48 PM
Replies: 3,480
Views: 916,324
Posted By mrbigh
IGBTs/Cap mounting

And here is my approach to the IGBTs and Capacitor mounting


http://i50.photobucket.com/albums/f322/fixmyset/Bradley%20GTII/DSCN2152.jpg
...
Forum: Fossil Fuel Free 10-13-2011, 08:58 AM
Replies: 3,480
Views: 916,324
Posted By CollinK
Well... you asked... so pardon the book......

Well... you asked... so pardon the book... Hopefully I get all the details right, or at least close enough to illustrate the point. ;)

Yes, shoot through is a problem. Just to be clear: shoot...
Forum: Open ReVolt: open source DC motor controller 09-12-2011, 08:59 AM
Replies: 7,381
Views: 2,410,790
Posted By Greg Fordyce
Quick guide to using HyperTerminal on Cougar controller

Mike, here's some quick instructions to get you going.

From a fresh reboot, plug in your USB-serial adapter to the pc and controller. If you want you can power up the controller at this point,...
Forum: Fossil Fuel Free 07-19-2011, 06:48 AM
Replies: 3,480
Views: 916,324
Posted By nlc
Your are welcome Paul ! I just looked your...

Your are welcome Paul ! I just looked your schematic rev 0.1 of the AC controller, and I see that you use a 30r Rgate, for switch ON and switch OFF of mosfets. I am almost sure you will have the...
Forum: Fossil Fuel Free 07-17-2011, 12:51 PM
Replies: 3,480
Views: 916,324
Posted By nlc
Hello everybody, hello Paul, I am French, new on...

Hello everybody, hello Paul, I am French, new on this forum, I subscribed only to answer to this post and congratulate you for your work :thumbup:

I am an electronics developer...
Forum: Fossil Fuel Free 07-05-2011, 07:14 PM
Replies: 3,480
Views: 916,324
Posted By MPaulHolmes
Oh heavens to betsy no. The new control board...

Oh heavens to betsy no. The new control board will be MUCH less than that. Less than $100.
Forum: Fossil Fuel Free 05-20-2011, 09:59 AM
Replies: 3,480
Views: 916,324
Posted By ChiefsBuggy
(bending down to pat your pet-phase) --- Oh what...

(bending down to pat your pet-phase) --- Oh what a cute, sweet little phase ... he looks so (ZAPPP! :mad: ) ...

Crap, didn't see that cap hanging around his collar! Discharge that thing before you...
Forum: Fossil Fuel Free 05-20-2011, 09:14 AM
Replies: 3,480
Views: 916,324
Posted By JRoque
hmmm... how about if you - connect those 3...

hmmm... how about if you

- connect those 3 phases together (with a 3' ballast, if needed) to one side of the motor and ground return to the other. Drive all switches simultaneously for 3x current...
Forum: Open ReVolt: open source DC motor controller 11-15-2010, 11:20 AM
Replies: 7,381
Views: 2,410,790
Posted By Greg Fordyce
How about a section in the wiki for disasters. A...

How about a section in the wiki for disasters. A page of problems that people have had, what caused it and how not to repeat it. The temptation some have with this project is to modify the design,...
Forum: Fossil Fuel Free 10-05-2010, 09:28 PM
Replies: 3,480
Views: 916,324
Posted By Automcdonough
more fun than not being able to afford parts

more fun than not being able to afford parts
Forum: Fossil Fuel Free 09-26-2010, 11:27 PM
Replies: 3,480
Views: 916,324
Posted By thingstodo
Regen for AC Motor

Yes, you can control regen back to the batteries.

Slow the output of the VFD down to the speed of the motor minus your slip and it starts to generate back to the DC bus.

If your four pole...
Forum: Fossil Fuel Free 09-05-2010, 01:08 PM
Replies: 3,480
Views: 916,324
Posted By Automcdonough
2200V??? Do the IGBT's have to be rated for this...

2200V??? Do the IGBT's have to be rated for this or can it be snubbed without losing the information in the signal? Someone who knows more about vector control will have to chime in on that one. Or...
Forum: Fossil Fuel Free 09-04-2010, 11:18 PM
Replies: 3,480
Views: 916,324
Posted By thingstodo
Some points about Vector control and VFDs in...

Some points about Vector control and VFDs in general.

I don't exactly understand vector control, but I use it. The parameters are measured by the VFD when you set it up during commissioning. It...
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