https://github.com/jsphuebner/stm32-sine/actions/runs/13931863114


Now I've driven for 1500km and the displayed temp is more logical, without step. Thanks a lot for that .
We have now to wait for a better lookup table, but finally, I still don't know the max temp the stator can resist ?
For now ...

Try this: https://github.com/jsphuebner/stm32-sin ... 3637730724

I tried it today, I've seen 160 degrees, so it seem to work, thank you so much.


And the most important, the Look up table, where i have the thermo couple temp, the oven temp (inacurate), and the resistances.

Thanks for you ...

Thank you so much,
I'll try it on Tuesday


If the second motor temperature drop below 140°C it changes over to SDU code


Yes, but the phenomenon occurs when the temperature drops, but also when it rises.

On my last trip the temperature rise up to 205 degree (supposed by adding 70 degree ...

You have them set to -20% and -40%. But they go to -100%

Yes I change this value with the retarder command, I've 6 level from 0% / 20% to 100% / 100%
In fact when my potnom is at -100% my regen is low if I set a low fslipmin 20kW for a fslipmin at 0.9Hz, but with a fslipmin at 2 I can go to more ...

So I changed the stator, and the value is the same so I made a script on my dashboard to have the right temp displayed
One unusual thing I noticed in the parameters is the high minimum slip (fslipmin). The default is 0.9 Hz or so, try dialing it back and check for changes.

I changed the value to ...

For reference, I have my limits set to:
"tmphsmax": 85,
"tmpmmax": 300,


I had the same params, but I think the tmpm can't go (return) upper than 155 so tmpmmax:300 will never be reached this is a problem for everybody, my too high temp it's my configuration problem, maybe not enough fan, maybe ...

P.S.Mangelsdorf wrote: ↑Mon Feb 17, 2025 1:18 pm if so, can you graph motor and inverter temps together?

This the inverter and stator temp, but I fed coolant by inverter side, next week I'll send the graph in the other way.

i.e. the inverter still in the case, with coolant fed from the motor side?


I've try (not intentionally) in the reverse way, and I think it's a bad way as the inverter doesn't warn so no way to know there is an issue, but same in the good way, I had the same reading problem.
I'll manage to ...

Do you have a non food oven you could carefully heat the stator with a couple other temp sensors to watch their temp rise over time to compare?

No badly I didn't yet . This could be the best way to figure how the sensor react.
I'll search for an oven.

I already try with 3 stators (so 6 sensors ...

Are you able to put at least some of the sensors in boiling water and check their accuracy on the high end?

We are talking about the stators sensor, they are inside the winding, so no I can't take it out, and I can't put another sensor in.
Sorry, I don't understand what you want to check by this ...

Maybe you have a 12v connection issue messing with the temp sensor reading?

I didn't notice 12v issues.
All other stuff in 12V seems to work, and also the inverter sensor work fine .


It's been asked a bunch of times but I haven't seen you answer yet. Have you measured actual coolant temp with ...

Perhaps it is a program error that no one has noticed until today, because the temperature remains below 120°C in most cases!


I think you're true, I'll check on the code if I can see something, but now I know how to estimate my stator temp.

My last interrogation is about the temp at the ...

So finally, I burn a stator again, maybe the first temp is the good one, because I'm pretty sure that 110 degrees is not that much for this stator ?
Or maybe it's due to too high Amp in the AC side, I only check the DC side power and I never exceed 300A 120kW
How to be sure of the temp reading ...

I didn't read all the code but on the VehicleControl::GetTemps the isLdu is set to false on declaration and is checked inside the case 1 and 2 without possibility to be true.
I didn't know how work the input switch mux, but seems not necessary to check if we know the value.

my apologies, isLdu is ...

Have you tried this with multiple temp sensors or just one?

I had the same issue with 3 stators, and 2 logic board, so I think the problem is software,
My cooling system is always on.

If I drive at constant speed, I'll see the same : go to 150 and fall down to 90, and during the time I stay at ...

And also my params

Hi,

I have some data, I'm pretty sure the good temp is the second one (I hope), but when I check the temp, I don't know if it's the good one displayed ....
Also the outdoor temp is upper than 10 degrees, so it's not possible to start at 1 degree, this is why I think the first values are wrong ...

The motor being colder than the inverter is odd. I have not seen that happen on mine.

It's only on startup, just the ambient temp is seen differently by motor and inverter, I think the motor one is false.


In fact these two are ignored when the hardware is detected as Tesla. So is it? (hwver ...

Hi,

I've a problem with the tempm (motor temp sensor) return, when I start my trip the value is lower than the outside temp (output 6°c, inverter 6°c, motor -12°c) , after the temp growth progressively (as the motor warm) to 155°c and then go down to 85°C and continue to growth.
When the motor is ...