Paul & Sabrina's cheap DIY 144v motor controller

[mora]

Sorry, I wasn't paying attention to board revision in question. Previously quoted advice was for older 500A control board which comes ready for resistive type throttle. I've tried both igbt and mosfet firmware on same controller Both worked fine but mosfet version (16kHz) was more quiet.

Originally Posted by thingstodo

Is that from the IGBT version of the DC controller or the MOSFET version?

If there are already instructions ... and I just need to follow them ... can you post a link? Or is this in the WIKI?

EDIT: I ask since RTD Explorer does not exactly work with the IGBT version as yet.

[jedsmd]

Here is the post from Paul where he explained the Hall Effect modifications to the igbt controller board before:


http://ecomodder.com/forum/showthrea...tml#post438651

Worked for me
Jerald

[MPaulHolmes]

Jedsmd, is your controller still working OK?

[jedsmd]

Hi Paul
Yes the Controller is working great. I have about 12K miles on it now and it has never let me down at all.

The controller is very meaty compared to other controllers I have owned. It makes for a better drive, and I have great confidence in it.
Jerald

[MPaulHolmes]

Here's a new board for the high powered IGBT DC controller:


Back:


Then, you just plug it into 3 IGBTs. Well, they evidently also have IGBT modules where the high side is your normal igbt, and the low side is just the diode. Notice the connectors are all standard spade crimp on, so you don't have to deal with those little crimp pins.

[mrbigh]

Originally Posted by MPaulHolmes

Here's a new board for the high powered IGBT DC controller:


Back:


Then, you just plug it into 3 IGBTs. Well, they evidently also have IGBT modules where the high side is your normal igbt, and the low side is just the diode. Notice the connectors are all standard spade crimp on, so you don't have to deal with those little crimp pins.

Paul, the PCBoard you are showing is not listed in your web store.
Is it available for sale/purchase?????

[duncan2]

Hi Paul
I'm still going - and The Device is still driving nicely - I find that around town I'm best with an additional resister in parallel with my throttle giving me 50% power

I've now become Duncan2 - because I can't find my old password and I can no longer access that email!

The weather is starting to turn here so I'm thinking about the winter improvements

I would like to;
Sort out some sort of traction control
Sort out some sort of rev limiterd

I haven't had that shut down lately - but I would like to upgrade my software to fix that
I don't have full torque for a bit when I start off - maybe the throttle ramp up could be made faster? (or is it in my head)

I'll be back in touch when I've actually done something

Thanks

Duncan

[thingstodo]

Originally Posted by duncan2

I would like to;
Sort out some sort of traction control
Sort out some sort of rev limiterd

Hi Duncan!

I don't remember your build - can you provide a link so I can read through it? That will minimize my silly questions for you ...

Traction control code would, in my opinion, require an encoder on the motor and one for each driven wheel. I don't know if there are enough spare inputs on the PIC. Some isolation for the inputs would be kinda nice as well.

Maybe just one pin for the motor and each wheel to read pulses would work? You should not need to detect direction for traction control ...

Rev limiter - same idea. Some sort of encoder or tach input on the motor. I think the PIC has some free cycles since the same one does a bunch of calculations in the AC controller.

I don't plan to use traction control on my Mazda ... but a rev limiter would be nice!

[duncan2]

Hi Things

This my "Device"


I'm direct drive to the diff so I am going to use the old ABS sensors on each wheel as my data for the traction control and also the speed/rpm limiter

I was thinking about adding the two rear wheel speeds together and comparing to the sum of the two front wheels

I was thinking of a separate module interfacing with the throttle input on the main controller

So it would drop down the throttle input when the tires start to spin - as opposed to just now when the first thing I know is that the tires scream and the back overtakes the front

The damn thing won't let me post the link!
I'm on DIY - Electric Car as - "Duncan's Dubious Device"

[thingstodo]

Originally Posted by duncan2

I'm direct drive to the diff so I am going to use the old ABS sensors on each wheel as my data for the traction control and also the speed/rpm limiter

Sounds like a good plan.

I was thinking about adding the two rear wheel speeds together and comparing to the sum of the two front wheels

I was thinking of a separate module interfacing with the throttle input on the main controller

So it would drop down the throttle input when the tires start to spin - as opposed to just now when the first thing I know is that the tires scream and the back overtakes the front

I would think that Left + right / 2 / rear-end gear ratio should give you motor rpm.

A separate module sounds like a good plan. ABS modules are a part of all of the cars that I know about ... precious little that I do actually KNOW ..

Others have posted silly little messages to get to the fifth post, where you can begin to include links

Is this the link you wanted to post?

Duncan's Dubious Device - DIY Electric Car Forums