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 01-01-2012, 11:35 AM   #5371 (permalink)
EcoModding Lurker
 
Join Date: Oct 2011
Location: Chandler, AZ
Posts: 23
Thanks: 9
Thanked 10 Times in 7 Posts
Paul;

That motor sounds like an old Model A Ford hehehehe

How much tread did you grind off the tire?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 01-01-2012, 02:07 PM   #5372 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,202 Times in 765 Posts
A lot!!! I had to sit on it with all my weight to get the stupid thing up to 115 amps. I think testing 1000 is hopeless using the same approach. Actually, I do know someone who could help. The Refridgerator Perry.
__________________
kits and boards
  Reply With Quote
Old 01-01-2012, 05:01 PM   #5373 (permalink)
Master EcoModder
 
jackbauer's Avatar
 
Join Date: Sep 2009
Location: Ireland
Posts: 734
Thanks: 26
Thanked 304 Times in 171 Posts
Might be time for that liquid cooled inductor.............oh wait didn't I get in trouble about that before ...
__________________
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
The Following User Says Thank You to jackbauer For This Useful Post:
MPaulHolmes (01-01-2012)
Old 01-01-2012, 05:27 PM   #5374 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,202 Times in 765 Posts
hahaha. That would never work. What a dumb idea. Actually, that's coming next!
__________________
kits and boards
  Reply With Quote
Old 01-01-2012, 11:44 PM   #5375 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,202 Times in 765 Posts
Someone told me that it's possible that some of that noise is probably from the probes picking up noise, so I attached the positive lead and ground to the same point, and it was oscillating and ringing like crazy. So it's possible that I'm chasing phantoms. haha. It's such a menace that it's happening. The Phantom Menace.

The control board, driver board, and power board needed very minor changes, but since the control board has so much room left on it, I added undervoltage lockout for the 12v signal now too. So now it disables if 15v supply to the driver board drops below 12.5v, 12v supply drops below 10.1v, and 5v supply drops below 4.49v.

It could still be a problem if the microcontroller crashed and didn't restart from the watchdog timer, so I took 2 unused pins on the micro, and am pulsing them from 0v to 5v to 0v. When one pin is zero, the other pin is 5v. They are driving the primary side of a small line filter (transformer). On the secondary, I rectify the signal and have a capacitor there. Then I have a load resistor that is constantly sucking the current from the capacitor. So... If the microcontroller freezes, it will certainly stop pulsing those 2 pins, which will cut the power to the primary of the line filter. The output of the line filter will drop to zero volts. I'm choosing the output capacitor and load resistor so the output falls in about 1 millisecond. That will trigger a comparator, which will then disable the mosfet driver. ya! You can't teach that. Pure instinct. hahaha.
__________________
kits and boards
  Reply With Quote
Old 01-02-2012, 11:40 AM   #5376 (permalink)
Master EcoModder
 
Join Date: Apr 2009
Location: Charlton MA, USA
Posts: 463

EVVette - '71 Chevy Corvette Coupe
Thanks: 31
Thanked 183 Times in 94 Posts
Quick feeler to see if there is interest.

Im looking to do a group buy of new kilovac EV200 contactors, but only if there is interest.

Here is my thread in the For Sale section:

http://ecomodder.com/forum/showthrea...tml#post277390

-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 01-05-2012, 05:50 PM   #5377 (permalink)
EcoModding Lurker
 
Join Date: Jan 2012
Location: Henderson ky
Posts: 10
Thanks: 7
Thanked 2 Times in 2 Posts
I need a little help. I assembled a speed controller I ordered from Paul and Sabrina. I had a vref fault until I found a loose connection at the current sensor now that that is fixed it still is not giving me anything as far as an out put. The throttle and current reference appear to be moving as they should but battery amps and current feedback are zero. Any ideas?
  Reply With Quote
Old 01-05-2012, 06:00 PM   #5378 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,202 Times in 765 Posts
During debugging make sure it's not hooked up to the battery pack. First, with nothing connected to B+, B- and M- bus bars, but with a throttle and the current sensor connected, turn on the 12v power to the control board. Now, put a volt meter's negative lead on PH1 or PH2, and positive lead on any of GR1 through GR10 on the control board while at zero throttle. Verify that you have zero volts. Now, give it a little throttle. The voltage should climb quickly up to around 12 volts, and then quickly fall back to zero, and the LED should start flashing. Does that happen?
__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
Ken6881 (01-06-2012)
Old 01-05-2012, 06:22 PM   #5379 (permalink)
EcoModding Lurker
 
Join Date: Jan 2012
Location: Henderson ky
Posts: 10
Thanks: 7
Thanked 2 Times in 2 Posts
the voltage is at zero but does not climb when you press the accelerator but the yellow light does flash.
  Reply With Quote
Old 01-05-2012, 06:31 PM   #5380 (permalink)
PaulH
 
MPaulHolmes's Avatar
 
Join Date: Feb 2008
Location: Maricopa, AZ (sort of. Actually outside of town)
Posts: 3,832

Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000
Thanks: 1,368
Thanked 1,202 Times in 765 Posts
Is the yellow light flashing the whole time? Even when the throttle is zero?

__________________
kits and boards
  Reply With Quote
The Following User Says Thank You to MPaulHolmes For This Useful Post:
Ken6881 (01-06-2012)
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 3480 05-04-2022 05:43 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 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com