Paul & Sabrina's cheap DIY 144v motor controller

[peja1971]

I just read first 81 pages of this thread and I can tell you do an exelent work. There is to much posts to read, I'm traying but I don't have to much time now to read it the all right now. I need to built controler for my EV Bela rada on www evalbum.com/preview.php?vid=2701
My frend and I develop the our own controler. Can some one point me to the some posts with schematics (especially to the power block) in pages after the page 81?
I'll keep to read all this thread but now I hawe not enough time.

Thanks

[Weisheimer]

Originally Posted by peja1971

.... Can some one point me to the some posts with schematics (especially to the power block) in pages after the page 81?
I'll keep to read all this thread but now I have not enough time.

Thanks

Here is the link to the controller wiki.

Open ReVolt - EcoModder

Paul and Sabrina have boards and kits available
and are quite prompt sending them.

Adam is hosting the software updates at;

Index of /firmware

Have Fun!

Mark

[sawickm]

Originally Posted by MPaulHolmes

Oh ya, I forgot about the schematic. I don't have a good way of posting it. It's in PCB Artist. Maybe I could take screenshots of several pieces of it.

Hi Paul,

Won't PCB Artist let you print the schematic ? If you have Adobe Acrobat you could print the schematic as a PDF file. Or I would think that it could be saved as an image file (gif,jpg,tif,etc.....).

-Mark

[MPaulHolmes]

Wasn't that car amazing!? Way to go, peja1971!!!!!

We aren't selling kits probably for at least a few weeks (I had a complaint about the help file, and I need to redo a controller so the pictures can all be updated, and so I can quit saying stuff like "not like in this picture!" hahaha).

[peja1971]

I don't want to buy controler (i haven't time to wait shiping), I just want to look to the final versoin of schematic. My pover board is very diferent and bigger, probably to oversized, I use 40 of IRFP260N mosfets and 40 of 200v680uf capacitors and I looking for best solution to drive this huge amount of mosfets. I haven't supplier who can bring me one ixys IXDD414PI 14A mosfet driver or some similar in short time, and I consider to drive it with BDX53 AND BDX54 transistors.

[Weisheimer]

Originally Posted by peja1971

... I use 40 of IRFP260N mosfets and 40 of 200v680uf capacitors and I looking for best solution to drive this huge amount of mosfets. I haven't supplier who can bring me one ixys IXDD414PI 14A mosfet driver or some similar in short time, and I consider to drive it with BDX53 AND BDX54 transistors.

Take a look at how Curtis drove a similar number of mosfets using a totem pole transister drive. Your BDX53/54 are darlington transistors which will require a fairly strong drive circuit. You could use the circuit shown in the top right corner of this PDF file. Q6, Q7, and Q8 is the totem pole drive I am referring to. These are small signal TO-92 style transistors.

http://www.evdl.org/docs/curtis_1221b_schematic.pdf

Also, what is the source of your PWM signal?
What are you using for your freewheel diodes?

You have plenty of reserve using the mosfets and caps that you have
chosen as long as you have good heat sinking for the mosfets.
The caps should be very low ESR as well.

The Vehicle looks like it will be fun!

Cheers
Mark

[peja1971]

Thanx to your help and time.
PWM signall is generated by PIC 12F683 from this project:
picprojects.org.uk/projects/ppc/index.htm, I plan to use mod 1 with frek 15.6Khz at this time.
Freewheel diodes? I don't know yet what I will found, I have some in TO247 case but I can't tell you now which they are.
On this pdf file, schematics have regen, can you explain me basics? How it's work?

WBR, Peja

[MPaulHolmes]

My current control board probably won't work. I just talked to Joe, who tried a 12v-12v dc-dc from Cincon for high side drive, and had problems with it. I need to make a new control board, and use the POWEREX VLA106-24151 or something like that. I'm glad that I got them for 50% off. PHEW!

I just finished assembling it today, so I'll see if it works or not, but will do the right way at the same time. haha

[regmeister]

Peja,

Perhaps it's a little old, but here is a paper from IXYS that may interest you.

HOW TO DRIVE MOSFETs AND IGBTs INTO
THE 21ST CENTURY

http://www.ixyspower.com/images/tech...s/IXAN0009.pdf

Best of Luck with your project.

Richard

[Flatmann100]

Hey Paul, I've completed the assembly of my controller! Tomorrow I begin installing it my car. Question: do I need to have avrstudio to load the program into the controller?