Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

[thingstodo]

Originally Posted by jackbauer

Ok this may seem like a strange request but can someone confirm to the world that I'm not a Russian hacker / fraudster?

I can confirm that you are not Russian, and not a fraudster ... I'm not signing off on the HACKER part ...

To what address should this message be sent?

[BogdanT]

By the sound of it, we should send our letters to the Director of J2 ))

[pablitosax]

Another interesting job..a controller but using Arduino plataform (Arduino Due that is more powerful than Arduino Uno/Mega) and using direct self control .
I don´t know avantages between direct selft control against Field Oriented Control ..someone knows ? :

https://www.youtube.com/watch?v=ybJFsJypBN8

[thingstodo]

Originally Posted by pablitosax

Another interesting job..a controller but using Arduino plataform (Arduino Due that is more powerful than Arduino Uno/Mega) and using direct self control .
I don´t know avantages between direct selft control against Field Oriented Control ..someone knows ? :

I have not read about Direct Self control. As far as I know, none of the commercially available AC Controllers use this method. Or perhaps they do and they call it something else?

The harmonics look nasty. I wonder if the torque is better than flux vector control.

The AC Controllers we use at work are all variants of sensorless flux vector control. No encoder. Implied position is calculated from back emf of the motor so an encode is not required. The control is not as good as if you have an encoder, but it's good enough. Not installing an encoder, and not fixing an encoder .. is PRICELESS!

[MPaulHolmes]

I know that self control does not work very well. At least when it comes to cookies around the christmas season. I can also confirm that jackbauer is not those nefarious things.

[pablitosax]

Originally Posted by mpaulholmes

i know that self control does not work very well. At least when it comes to cookies around the christmas season. I can also confirm that jackbauer is not those nefarious things.

lol

[dave koller]

Dito jackbauer -- cookies not so sure.............

[jackbauer]

Thanks guys Looking forward to having a play with one of these controllers after a long absence.

[02BMW02]

Is there a detailed description on Pauls software interface for all the individual commands.

I have bought one of pauls Leaf drop in boards so I assume that he has put his same code in this too.

I would initially like to bench test the motor at 60v, do I have tell the controller the battery voltage ?

Thanks

[thingstodo]

Originally Posted by 02BMW02

Is there a detailed description on Pauls software interface for all the individual commands.

I have bought one of pauls Leaf drop in boards so I assume that he has put his same code in this too.

I would initially like to bench test the motor at 60v, do I have tell the controller the battery voltage ?

Thanks

The code lists all of the commands, since it interprets the commands from the terminal in order to execute them. It is the running system, so I would trust this over external documentation, since it *HAS* to be up to date.

Paul's controller runs off a separate DC converter, bumping a nominal 12V input to 24V for the control board only. There is no location in the software to actually TELL the software what voltage the system is running.

So - no issue testing at 60V. I've tested down to 24V and it works fine. Lower than 24V the board works fine but the IGBTs you are driving (newer designs) don't work quite right.

The MOSFETs would likely work at 24V and lower .. not sure as I blew up my MOSFETs before I was able to test that sort of thing