Have you got any more info on this? B as in Bjorn and persteel on YouTube have some good videos on the i3 batteries. No, sorry and the battery will not be dismantled for now, since I use the complete battery for the project, SIMPbms have been installed on the battery without problem i used a split ...

johu wrote: ↑Sun Mar 14, 2021 10:40 pm Well, he'd have to move to Central Europe I'm starting to learn that 3-phase power (especially domestic) is actually quite exotic.

Yes, It's quite exotic for us... only commercial / industrial got 3 phases here

Thanks :) yes, there seems to be plenty of clearance. Are you sure... see my picture in the other tread https://openinverter.org/forum/download/file.php?id=8110&mode=view , the gate driver connector on the left (white tape and yellow paint) is almost touching the cover, for that reason I use th...

Does the board is a 2 layers or a 4 layers ? JLC pcb recognize it as a 4 layers?

Nice job!!!

The stm32 (brain) will be inside the inverter via the (2) SIL headers?

Also the driver pairs are interchangeable. If you swap the input low/highside you can swap the output as well. Would also contribute to shorter wires. T'hats actually a freaking good idea 😆 EDIT: @lumax, You really need to make your gate (GE) wires thicker and twist them. At every PWM pulse a lot o...

Keep in mind he is using the openinverter drivers without desat, I think oclimit beyond nameplate current (800A) is quite risky... Overcurrent fault at 600A when steadily spinning up seems weird, maybe current sensor signals need shielding? The overcurrent comparator does NOT detect cross conductio...

It might be that high side IGBT emitter tail is meeting the low side collector turning on and you are seeing some short circuit action through current sensors. Yes, that's also what I'm thinking... The plot seem to be really good, and suddenly... Bang!!! over current I will double the dead time and...

From the IGBT specsheet Implemented collector current ICN 800A Continuous DC collector current TF = 75°C, Tvj max = 175°C IC nom 550A Continuous DC collector current TF = 25°C, Tvj max = 175°C IC 700A Repetitive peak collector current tP = 1 ms ICRM 1600A SCdata VGE ≤ 15 V, VCC = 360 V tP ≤ 8 µs, Tv...

I got an Infineon IGBT module FS800R07A2E3 (BMW I3 inverter) rated at 800A cont and 1600A peak, where should be set my Ocurlim ?

1500A???

Thanks!

Lots of improvement since my last update I had a problem... the motor has no regen, as soon as I try to apply brake, It accelerate rather than slowing down, I thought it was related to a bad parameter, so I tried all kind of settings with no luck, the problem was the syncofset... it was perfectly di...

Thanks for feed back, really appreciated!!! Start looking in to the charger schematics... From the BOOST charger docs: "This mode is used if the DC input voltage is LOWER than the lowest battery pack voltage. For example rectified 230V AC results in 320V DC" My battery pack have the follow...

OK, it make sens... I tough the resolver poles pair was absolutely related to the number of lobs on the resolver rotor... 6 lobs = 3 poles pairs... but in this motor it's a 6 poles pairs on 6 lobs! Resolver was set to 3PP and motor was set to 3PP (working but haft real speed) But in real Resolver is...

No, there is only 6 lobs on the resolver so it should be a 3 poles pairs... but I did not think about this one... could also be a 12 poles!!! For now the inverter is disconnected, I'm putting everything back together and do the final assembly and wiring of the inverter/motor, as soon as everything i...

FOC firmware have been tuned and sincofs is good enough for now , but I think there is a problem in the firmware... I might be wrong to... My I3 motor is a 12 poles (6 poles pairs) and the resolver is a 6 poles (3 poles pairs) The motor only turn when I set it to be a 3 poles pairs, it does work per...

The test rig

Here are the results When I got this over current problem on the brain the PWM frequency was set to 17.6Khz... Gate driver (all 3) idle current @ 5V = 400ma 3.1A @ 5V @ 17.6 Khz (bad wave form) 2.0A 2 5V @ 8.8 Khz (good wave form) 1.2A @ 5V @ 4.4 Khz (excellent wave form) IMG_20210219_102629.jpg So ...

Yes, I will give it a try and I will be back with the results!

Already run into a problem 🤣 Tested all PWM signal, and adjust the dead time to 1.5us, connected the IGBT (no DC link), power it back on, start inverter and BAM!!! Blow my 1A fuse on the brain... Triple check all my wiring, everything was good. Unplugged the driver from the IGBT and test all gate on...

Thanks for the link!

Good job Guy's ! I'm also working on this inverter but I took a different way, I used the original LEM current sensor, get rid of the board and use the gate driver from Johu, might not be the best thing to do, but I tough it would be easier for me... no need to reverse engineer this board and less t...

Little update... After almost one year, the project was held to a dead stop, since I got problem with the original brain, (no PWM output) and no more time to play... Johu, kindly send me a replacement board to replace the defective one... After a couple hours of setup and config, I now have PWM sign...

Just to let you know... I have finally found some time to test the new brain, and now I got PWM signal!!!

Yeah!!!

Ok, I will give it a try... If it doesn't work as expected I will pay for shipping and trouble to get an other board

Thanks!

I could try, I did this 2 or 3 time with quite similar package ... But do I need special hardware to flash the boot loader in this MCU, never played with STM ?