Good testing day today. Got the main inverter and the exciter inverter going. 1713815378169.jpg All runs fine from 3V3 control signals. I haven't found temperature and bus voltage signals so maybe that is on SPI comms again. But I also found that I forgot to break out two pins so will check these ne...

Since you'd be the first to deploy this on a larger pack I'd be willing to discount on that. Let me know

The 2WD version of the the vehicle is always more efficient than the 4WD. Partly explained by the weight difference but not just that. Also most 4WD vehicles use a PM motor in the rear and async motor in front. It only steps into action on high torque requests. For fine grained control I'd suggest a...

No he must have replaced it with the DELETED text himself.
When I delete spammers I can delete their posts along with the user. Sometimes I delete users that have no posts and haven't been active for more than a year. But never ones that posted something

Yes just cut the direction signal. Works even mid-drive

Yay, road trip reporting time :) Another 1000 km covered going to Augsburg and back. Key takeaways The VCU restarts no longer occured CCS charging was absolutely flawless except one session getting interrupted when someone used the other outlet on the same charger. Could restart no problem Battery r...

If you disconnect the relays from the inverter does the web interface then stay alive?

When we want to run it at circa 400v and with a more common ratio of around the 3.6:1 both of those factors have a large effect on the motors top speed. Motor top speed is not limited by voltage. Peak power CAN be limited by voltage given it's not limited by inverter or motor anyway. Field weakenin...

MrX wrote: ↑Wed Apr 17, 2024 10:00 am I thought that at some stage there was an i3 variant added which mapped the tmphs sense correctly

When setting snshs=BMWI3 it will switch over to SPI comms for udc also

Re info from PM: You have fixed the motor case grounding which is good but it seems power supply to the inverter is not stable. How much current does your contactor consume? 5.32.R gives the BrakeCheck status because cruisemode != Off so it wants to see the brake pedal once at startup. After that yo...

With the above established I want to return to the original questions and the (partly premature) conclusions. So we start with a perfectly working car and a terminal class that remained largely unchanged for years. After fixing a completely unrelated problem with the battery the VCU starts to do spu...

Alright, more changes. Now I no longer managed to lockup the terminal or entire processor. The USART has an overrun flag and apparently while that is active it no longer accepts data. So now I a) disable the RX DMA while running a command - that stops the watchdog reset b) reset the resulting overru...

I have added an echo 0|1 command now and also allow turning off echo in the constructor. So now for the car project I turn it off by default. Upcoming versions of the ESP firmware can turn it off via the command https://github.com/jsphuebner/libopeninv/commit/df951cc1b7fae2dd483429b873bcbbe838746db2...

Reboot problem solved: viewtopic.php?t=4925

Today I found 90% of the cause of an issue that has been plaguing me for months now. I had random reboots of my VCU mid drive. Read up on the whole story here: https://openinverter.org/forum/viewtopic.php?p=66887&hilit=reset#p66887 Lately I had the VCU restart during charging but there was one i...

Congratulations :) (to finishing of course) I don't think the Tesla inverter took damage as it has reverse polarity protection, both the logic board and the power board. EDIT (after watching the video): Do you have a solid ground connection to the inverter? The contactors will pull a surge from grou...

Interesting. Yes the large outputs chokes point to an inverter

I doubt this is from any vehicle. Open frame with fans doesn't play too well in cars

If you're savvy it's easy to rig this up by extracting the buck/boost stage from a Prius Gen2 inverter. As an invariant the additional pack must always have a higher voltage than the installed pack so it can sit at the boost side of the converter. That said for the rare use case it might be easier t...

Hi! was discussed before: viewtopic.php?f=9&t=4511

That's great
150A and no motion is pretty good, wouldn't even bother to get closer

No communication this time, undo last change... ppvariant is just relevant for calculating cable capacity for type 2 cables. Can't be the culprit. Have you checked your port contactors that they are not stuck? Iso resistance of port? Does CP measure fine seen from the port? Test also with ActuatorTe...

celeron55 wrote: ↑Sat Apr 13, 2024 8:00 pm Are all of the pins other than LOCK_MOT1 and LOCK_MOT2 referenced to ground?

Yes exactly. PE should be solidly connected to the chassis not far away from the charge port so that would serve as a ground reference for the signals

I guess the design is still young enough for shuffling pins

Via the A/C inverter it will just boost
Via MG1 it will just buck. You need an additional relay to connect the battery to the buck side while charging. At least then you don't need the extra current sensor because it will use the MG1 ones

So charging feature would work but not powering the dcdc converter while driving.