Search found 98 matches

by skr
Tue Mar 24, 2026 8:14 am
Forum: VW (VAG, Volkswagen, Audi, Porsche etc.)
Topic: VW Golf VIII hybrid, Cupra Formentor hybrid Battery
Replies: 17
Views: 456

Re: VW Golf VIII hybrid, Cupra Formentor hybrid Battery

These seem to follow vda590 standard - same as other MEB modules.
My guess by the prismatics is that they are Catl (most likely) or SK made.

Given that they are 1P it would be interesting to figure out what the current capability is, very likely not far off from 12s2p catl meb modules divided by ...
by skr
Tue Mar 17, 2026 5:21 pm
Forum: Mitsubishi
Topic: Outlander rear motor and inverter
Replies: 385
Views: 1098419

Re: Outlander rear motor and inverter

Following up on the above post here is a nice video from Shaun
by skr
Sat Mar 14, 2026 2:39 am
Forum: Mitsubishi
Topic: Outlander rear motor and inverter
Replies: 385
Views: 1098419

Re: Outlander rear motor and inverter

Here is video by Shaun, that's the front inverter, my bad
by skr
Fri Mar 13, 2026 1:22 am
Forum: Mitsubishi
Topic: Outlander rear motor and inverter
Replies: 385
Views: 1098419

Re: Outlander rear motor and inverter

Just wanted to drop this here, found on facebook, posted by sdobbie, maybe may come useful for someone in the future
Possible search terms- Mitsubishi Outlander Rear drive unit inverter IGBT MBB600TV6A power stage half bridge Meiden N62P30851
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by skr
Tue Mar 10, 2026 3:17 pm
Forum: Open Tasks
Topic: AI-assisted search for the forum/wiki (RAG “librarian”)
Replies: 13
Views: 482

Re: AI-assisted search for the forum/wiki (RAG “librarian”)

Yea, I don't want access to anything resembling the prod environment. At this point I don't want anything at all, before I validate that a bunch of data can be searched nicely on my own box, locally. Too many projects to tell when that will be.

Robots.txt seems like a full lockdown with User-agent ...
by skr
Sun Mar 08, 2026 10:05 pm
Forum: Open Tasks
Topic: AI-assisted search for the forum/wiki (RAG “librarian”)
Replies: 13
Views: 482

Re: AI-assisted search for the forum/wiki (RAG “librarian”)

Another problem imo is that OI robots.txt + botwall seems to have killed any google-ability of anything OI, at least with good quality.

Even if I search on google for anything I know exists on OI, the results are sometimes not there or mostly without metadata.

Maybe something as simple as ...
by skr
Sat Mar 07, 2026 7:44 pm
Forum: Open Tasks
Topic: AI-assisted search for the forum/wiki (RAG “librarian”)
Replies: 13
Views: 482

Re: AI-assisted search for the forum/wiki (RAG “librarian”)

I want to first try out local rag/hybrid stuff with visforvoltage.com forum vectrix section I now have locally- it's 2k threads + assets and should show some viability of this idea if it actually exists. Maybe I am delusional in the idea that this can be somewhat straight forward to set up without ...
by skr
Tue Mar 03, 2026 4:31 pm
Forum: Open Tasks
Topic: AI-assisted search for the forum/wiki (RAG “librarian”)
Replies: 13
Views: 482

Re: AI-assisted search for the forum/wiki (RAG “librarian”)

Imo this could run on a weekly basis or along those lines. There's a sort of catch 22 here, I need to scrape the forum for this to be properly tested and verified, but I don't think scraping the forum is a good idea on live prod, even if higly rate limited.

I am now testing a similar idea for ...
by skr
Sat Feb 07, 2026 11:14 pm
Forum: Open Tasks
Topic: AI-assisted search for the forum/wiki (RAG “librarian”)
Replies: 13
Views: 482

Re: AI-assisted search for the forum/wiki (RAG “librarian”)

I just ran a quick greasemonkey textual scrape of Wiki (300ish pages) through mediawiki api (at sane human speeds) and used various tiny models, only with vector embedding database, so no actual hybrid search by query keywords. Results are pretty underwhelming, to say the least..
Model runs on CPU ...
by skr
Thu Feb 05, 2026 9:48 pm
Forum: Open Tasks
Topic: AI-assisted search for the forum/wiki (RAG “librarian”)
Replies: 13
Views: 482

Re: AI-assisted search for the forum/wiki (RAG “librarian”)

Jacobsmess totally agree on the current search limitations, especially the 3+ character minimum. I often find myself trying to come up with what I could add to search short sutff(IQ, OC, UV, etc.) and part numbers where exact matching matters.

Johu yes, at the core this is basically a fancy search ...
by skr
Thu Feb 05, 2026 7:15 pm
Forum: Open Tasks
Topic: AI-assisted search for the forum/wiki (RAG “librarian”)
Replies: 13
Views: 482

AI-assisted search for the forum/wiki (RAG “librarian”)

I’ve spent most of my life in forums of various sorts, and one thing I’ve noticed is how much time it takes to “stay in the loop”… or to find that one thing you vaguely remember reading 5–10 years ago. We finally live in a time where improving this is actually practical.

We’ve got 86k+ posts plus ...
by skr
Thu Feb 05, 2026 3:25 pm
Forum: Drive trains (motors and inverters)
Topic: Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime
Replies: 6
Views: 399

Re: Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime

So the latest commits on github now do per edge loss estimations, which should be much more closer to reality.
There are now a few more power stage presets, namely LDU, SDU, Leaf gen2,bmw I3ish one along with the vectrix vx-1 powerstage. I tried to add as much as I could about each of these ...
by skr
Wed Feb 04, 2026 7:35 pm
Forum: Projects
Topic: Vectrix VX1 MotorController OpenSource/DIY
Replies: 7
Views: 3784

Re: Vectrix VX1 MotorController OpenSource/DIY

so my observations from stock inverter operation seem to be correct- the stock inverter firmware runs sine LUT + phase advance LUT and something akin to DPWMish scheme at all times, where it makes sure only two legs are switching at any time, meaning, that implementing STM32-SINE -FOC build as is ...
by skr
Tue Feb 03, 2026 4:44 am
Forum: Drive trains (motors and inverters)
Topic: Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime
Replies: 6
Views: 399

Re: Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime

So spent most of the night with a few gifted agents vibecoding this fork:
https://github.com/skrubis/IPMMotorSim-PWM

It is an effort to refactor and extend the IPMMotorSim to a into a PWM-edge, deadtime-aware inverter + motor simulation that can:
generate *actual switching waveforms per PWM ...
by skr
Mon Feb 02, 2026 9:56 am
Forum: Drive trains (motors and inverters)
Topic: Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime
Replies: 6
Views: 399

Re: Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime

My Initial idea to somehow qualitatively assess what modulation frequency and at what point would be suited is to extend the IPM Motor Sim to work at a lower layer to try and add pwm modulation data and some switching loss model in to it. Then some sweeps with each DPWM style could help understand ...
by skr
Sun Feb 01, 2026 7:47 pm
Forum: Drive trains (motors and inverters)
Topic: Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime
Replies: 6
Views: 399

Re: Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime

The only data point I have for zombified inverter longevity is this comment:

Basically the situation is the same as before, we just acknowledge the fact that SDU inverters broke at an over-proportional number with the OI board. I can't really put a percentage on it but over the years I sold 350 ...
by skr
Sun Feb 01, 2026 7:16 pm
Forum: Drive trains (motors and inverters)
Topic: Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime
Replies: 6
Views: 399

Dynamic PWM modulation in STM32-SINE FOC to increase the inverter lifetime

This is a separate thread from this post . I went digging through old OEM inverter/DSP asm code and fell into the PWM rabbit hole. I checked most of open source foc codebases if anyone implements any optimizations like that and to my surprise I found none, maybe for a reason. My current goal is ...
by skr
Thu Jan 29, 2026 3:55 pm
Forum: Drive trains (motors and inverters)
Topic: IPM Motor Simulation and FOC Software
Replies: 995
Views: 400560

Re: IPM Motor Simulation and FOC Software

Not sure if this is the correct thread, but it seems the most fitting.
My 101 on motor drives and commutation is still under construction, but while dwelling deep in to zombifying a motor drive , I fell in to PWM modulation scheme efficiency rabbit hole.

I read the YANGDI HE Masters thesis on PWM ...
by skr
Thu Jan 29, 2026 4:16 am
Forum: Projects
Topic: Vectrix VX1 MotorController OpenSource/DIY
Replies: 7
Views: 3784

Re: Vectrix VX1 MotorController OpenSource/DIY

What worries me is that this being a SPM motor (or SPMSM as called in fw), it may not get as many benefits as one could desire or require head bashing amounts of tuning to get running right. There were similar concerns in this thread, for Alta bike, which, funnily enough uses the same power brick ...
by skr
Wed Jan 28, 2026 7:35 pm
Forum: Projects
Topic: Vectrix VX1 MotorController OpenSource/DIY
Replies: 7
Views: 3784

Re: Vectrix VX1 MotorController OpenSource/DIY

I would like to slowly proceed with creating a zombie for the bike MC, the old DSP is doing a pretty rough commutation, with phase advance at higher RPMs.

Hopefully this brings:
Longer life for IGBT power brick due to much more effective switching.
Free choice in sixpack switching frequency ...
by skr
Fri Jan 23, 2026 6:28 pm
Forum: Batteries and Charging
Topic: What do you think of the “donut” battery?
Replies: 7
Views: 543

Re: What do you think of the “donut” battery?

Don't forget that the same guy did this buzzword shitpost salad for AI
by skr
Thu Sep 18, 2025 2:00 pm
Forum: Battery Managment (BMS)
Topic: Jk-BMS
Replies: 3
Views: 2531

Re: Jk-BMS

Delete the chinese spyware app and try "overkill solar" app, there were some calibration offsets available there afaik, maybe those help
by skr
Sun Sep 14, 2025 12:23 am
Forum: General
Topic: DDOS Attacks / AI botfarm overload
Replies: 49
Views: 12376

Re: DDOS Attacks / AI botfarm overload

Seems to be working
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by skr
Sat Sep 13, 2025 10:42 pm
Forum: Batteries and Charging
Topic: ESP-flatcharge - ESP32 based type2 flatpack/r48xx based OBC controller
Replies: 5
Views: 4987

Re: ESP-flatcharge - ESP32 based type2 flatpack/r48xx based OBC controller


https://openinverter.org/forum/viewtopic.php?p=44002#p44002

Sounds like you're running into this


Below 48V I am controlling current by setting the voltage setpoint a hair above pack and controlling current that way with a PI loop, had to play around with numbers, but now works super reliably ...