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

[motorulf]

Is there any .pcb and .sch files for this version of the board?
I feel im a bit in the dark here hehe

I was searching for a place to solder the desaturation detection cable for a few hours, until i just desided that they must be designed to be on the board already. Maybe i was wrong?

[MPaulHolmes]

oh good that shouldn't damage anything important. You can just add a jumper across the fuse. Are you sure the pinout for your current sensor cable is right? Orient the board so that the 3 current sensor plugs are along the bottom. The rightmost pin of all 3 is the output of the current sensor. It should be 2.5v when there's no current going through them. Do you have 3 current sensors plugged in? You can measure the 2.5v relative to the GND test point.

Yes, could you email me, because I'm having trouble finding your email. My email is paulandsabrinasevstuff@gmail.com. I'll then send all the pcb and sch files, as well as a pdf showing pinouts of everything.

[motorulf]

Yes i was shure, but was also very wrong haha
I made a mistake on the sensor side of the cable apparently, now that is fixed and that cleared the fault.
Thank you!!

[MPaulHolmes]

It ain't what you don't know that gets you into trouble. It's what you know for sure, that just ain't so. haha

[motorulf]

True

I suspect that the commands over the serial port are supposed to be self-explanatory.
Well, not for me...

For example
stream-raw-throttle xxx (range 0-1)
I just type in stream-raw-throttle and get a stream of raw throttle data?
Nothing is happening. None of the stream commands works for me.
Tried the run-pi-test & run-rotor-test commands also. Nothing.

I managed to change motor type and throttle type, so something is working.

What am i doing wrong this time?

Can i use an encoder without an index pin?
The motor that i have connected now does not have one.

[MPaulHolmes]

It's basically a turn on or turn off sort of thing. So, you would do:
stream-raw-throttle 1
stream-????? 1
stream-?????? 1
...
...

to turn on as many things as you want to stream. To turn something off (like throttle):
stream-raw-throttle 0


Now, to actually start the stream, you would type:

data-stream-period 1000

(1000 means 1000 milliseconds. You can choose a different number)
To stop the stream, you type
off <carriage return>
It will keep going until you hit enter.

Yes, you can use a motor without an index pin. Do you have an induction motor? They don't use index pins. You would type:

motor-type 1

(that means induction motor)

[motorulf]

Yes, induction motor, not the one in my car but i have one of these big things in my workshop Hyundai/enova 90kw
I thought i use that for experimenting on before start putting everything into the car. It is -15°C where my car is at, so i wanna be shure stuff works before going outside

I have a resistive throttle, thats type 1, right?

[MPaulHolmes]

at work. Will write back later. (I just didn't want to think I forgot you.)

[motorulf]

I managed to setup the throttle, i think.
The motor is turning, which is good
But it just keep revving up, which is scary.
I disconnect the battery an let it calm down for a while.

When moving throttle higher than the treshold for min_throttle, the motor starts turning, if i drop the throttle down again, to regen, the motor still revs up.
I have not tested how far this will go, but 5 secs of spinning up = 4 minutes of spinning down. So it is quite fast...
I have max-battery-amps and max-battery-amps-regen at 15A.
The max-motor-amps and max-motor-amps-regen at 25A.
The current-sensor-amps-per-volt at 200A. I also tried with different values but no difference.
My problem is this: i measure 65A on the battery cable. how is this possible?
I think this is limited only by the internal resistance of my little 6s lipo 8Ah.

So why does it want to accelerate out into space and leave me?
And why does it seem like i can not limit the current?

Also, i have tried run-pi-test and run-rotor-test wich both seem to do nothing. They dont even result in an error.

"Welcome to amateur hour, first up is motorulf..."

[MPaulHolmes]

The default is a hall effect throttle, so the soldered resistors are set up for that. It won't work for a resistive throttle without an addition of a resistor, and changing another resistor. That's the problem you are having. You need to change:

R101 should be like 2k (instead of nothing).
R73 should be like 4.7k instead of 47k (I think it's 47k right now).

For a Lem Hass 200-s, the current sensor amps per volt is 200amp / 0.625v = 320