Search found 6074 matches

by johu
Mon Sep 09, 2024 7:43 pm
Forum: Battery Managment (BMS)
Topic: Question about 12 Volt "starter" Battery (Please move if incorrect)
Replies: 17
Views: 593

Re: Question about 12 Volt "starter" Battery (Please move if incorrect)

Yes I use a large lead acid too, so far. Highest charging current I ever saw was 50 A. Using LFP in the A2 conversion. Never checked what would happen if the cells are low. It is very unlikely as the car draws near 0 standby current and the battery is kept at 14V during driving and charging. There i...
by johu
Sun Sep 08, 2024 8:42 pm
Forum: Inverters / Motor Controllers
Topic: Inverter Firmware 5.35.R
Replies: 27
Views: 5554

Re: Inverter Firmware 5.35.R

Zieg wrote: Sun Sep 08, 2024 7:16 pm I don't understand the physics well enough
Neither do I it seems. Unexpected result!
by johu
Sun Sep 08, 2024 1:46 pm
Forum: General
Topic: boost parameter
Replies: 5
Views: 196

Re: boost parameter

Here is the graphics https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fimage3.slideserve.com%2F6532812%2Fconstant-volts-hz-v-f-control2-l.jpg&f=1&nofb=1&ipt=89ca9e1dfebb56fa872ae38277594bff0359095da1320e5825d6f6ce561fc296&ipo=images Ideally for a theoretical motor with no w...
by johu
Sun Sep 08, 2024 8:21 am
Forum: Charging
Topic: Help with a Simple (Hopefully) CCS Charge Curve?
Replies: 2
Views: 265

Re: Help with a Simple (Hopefully) CCS Charge Curve?

Here my 3 step version https://github.com/jsphuebner/stm32-car ... s.cpp#L121

It is based on the highest individual cell voltage though not total pack
by johu
Sat Sep 07, 2024 4:26 pm
Forum: Battery Managment (BMS)
Topic: Question about 12 Volt "starter" Battery (Please move if incorrect)
Replies: 17
Views: 593

Re: Question about 12 Volt "starter" Battery (Please move if incorrect)

I think the days of Diesel heaters are over with todays battery prices. Who wants that smell back?

These infrared sheets sound great, do you have a link?

The DCDC should be able to supply all loads without the help of the 12V battery
by johu
Fri Sep 06, 2024 12:21 pm
Forum: Battery Managment (BMS)
Topic: Question about 12 Volt "starter" Battery (Please move if incorrect)
Replies: 17
Views: 593

Re: Question about 12 Volt "starter" Battery (Please move if incorrect)

I've been toying the idea to replace my lead battery with 3 NMC cells. They would discharge via a diode (not much load, just car standby) and charged with a 14 to 12 V buck converter. If you have no current draw at all while the car is off or if you don't mind a manual disconnect switch these can be...
by johu
Thu Sep 05, 2024 10:39 am
Forum: Open Tasks
Topic: Project demystification - make openinverter.org more accessible
Replies: 66
Views: 27619

Re: Project demystification - make openinverter.org more accessible

I have listed a few people. Don't hesitate do add yourself with your github, youtube or whatever Tried some AI can you summarize the goals of the openinverter project for people who never heard of it The OpenInverter project is an open-source initiative focused on developing and sharing technologies...
by johu
Thu Sep 05, 2024 8:55 am
Forum: Inverters / Motor Controllers
Topic: Driver-induced oscillations
Replies: 1
Views: 426

Re: Driver-induced oscillations

Basically throtramp and regenramp is all there is. You could set a low value for regenramprpm to completely disable ramping above a given speed
by johu
Thu Sep 05, 2024 7:44 am
Forum: Tesla
Topic: Accelerator Pedal Initial Tip-in
Replies: 5
Views: 544

Re: Accelerator Pedal Initial Tip-in

With firmware 5.35.R you get parameter maxregentravelhz which scales regentravel with speed. The more speed, the more travel. So from standstill you get instant response. While driving it remains the same because otherwise you wouldn't be able to control regen. Before installing the firmware read th...
by johu
Thu Sep 05, 2024 5:34 am
Forum: Inverters / Motor Controllers
Topic: Inverter Firmware 5.32.R
Replies: 34
Views: 21339

Re: Inverter Firmware 5.32.R

If you haven't configured CAN throttle or CAN cruise control you can leave these items at 0.
Also canio is logically ORed to the physical inputs.
by johu
Wed Sep 04, 2024 2:54 pm
Forum: Battery Managment (BMS)
Topic: Video: What is Battery Balancing? Learn it in 5 minutes
Replies: 5
Views: 508

Re: Video: What is Battery Balancing? Learn it in 5 minutes

jrbe wrote: Tue Sep 03, 2024 8:43 pm That was great. I think the videos you make should get links added in the wiki as you go.
I linked both videos to the new main page https://openinverter.org/wiki/Main_Page_New
by johu
Wed Sep 04, 2024 9:54 am
Forum: Open Tasks
Topic: Project demystification - make openinverter.org more accessible
Replies: 66
Views: 27619

Re: Project demystification - make openinverter.org more accessible

I've started rewriting the main page, preview it here: https://openinverter.org/wiki/Main_Page_New

Contribution of other components appreciated, I've started with drive trains that can be used as a template

Also if you find a "softer" introduction to what OI actually is, please bring it on
by johu
Tue Sep 03, 2024 12:53 pm
Forum: Renault
Topic: Renault Zoe (Continental) Inverter Reverse Engineering
Replies: 11
Views: 5667

Re: Renault Zoe (Continental) Inverter Reverse Engineering

Have been going at the inverter again the last few days. Last entity to figure out is the DC/DC converter. It used to run by simply dumping recorded CAN messages but now I cannot get it back up. Inverter turns on and sends its CAN and also draws 750 mA from the 12V battery but then it doesn't put an...
by johu
Tue Sep 03, 2024 10:02 am
Forum: Toyota/Lexus
Topic: Prius Gen2 adapter board development thread
Replies: 913
Views: 179037

Re: Prius Gen2 adapter board development thread

With firmware 5.35.R you can also set ocurlim = -1 on Prius hardware and thereby disable the detection of the MFIV signal.
by johu
Tue Sep 03, 2024 9:59 am
Forum: Inverters / Motor Controllers
Topic: Inverter Firmware 5.35.R
Replies: 27
Views: 5554

Re: Inverter Firmware 5.35.R

Sounds not good. Which speed are you running? I've limited to 7500 rpm. syncofs isn't something you back off only something you get spot on or not. Now, since you seem to dare spinning it faster than I do could you try increasing syncadv from 10 (the default) to 11? My finding was the lower syncadv ...
by johu
Mon Sep 02, 2024 3:13 pm
Forum: General
Topic: image hosting
Replies: 3
Views: 381

Re: image hosting

You attach the image to your post...
All data is backuped weekly
by johu
Wed Aug 28, 2024 4:05 pm
Forum: Classifieds
Topic: SDU drop in for sale
Replies: 5
Views: 2173

Re: SDU drop in for sale

alexbeatle wrote: Wed Aug 28, 2024 3:42 pmYes
As I'd expected that was a spammer
by johu
Wed Aug 28, 2024 5:55 am
Forum: Tesla
Topic: How to not kill a tesla drive unit
Replies: 57
Views: 17077

Re: How to not kill a tesla drive unit

Guys, what are your issues with just keeping the contactors closed? You can always open them by turning the ignition off if needed.
by johu
Tue Aug 27, 2024 7:36 am
Forum: Charging
Topic: Issues with Unstable Data Transmission Between PEV and EVSE Using Yellow Beet Boards Based on Qualcomm QCA7K
Replies: 4
Views: 898

Re: Issues with Unstable Data Transmission Between PEV and EVSE Using Yellow Beet Boards Based on Qualcomm QCA7K

Are the two modules on a common GND / PE?

EDIT: took the liberty to replace your google doc with an attachment. Linked docs have a tendency to disappear
by johu
Tue Aug 27, 2024 6:30 am
Forum: Projects
Topic: 1971 GMCe Lexus GS450H BMW 530e Tesla Model S Electruck [FINISHED]
Replies: 1327
Views: 1415164

Re: 1971 GMCe Lexus GS450H BMW 530e Tesla Model S Electruck [FINISHED]

Do you just tap your debit card? Many charge providers in Germany are in raptor mode right now. Tapping your card can be an expensive exercise. And since they charge the same ridiculous prices (like 60-80 ct) among each other roaming has become equally expensive. Only if you use the specific app wit...
by johu
Mon Aug 26, 2024 7:43 am
Forum: Projects
Topic: '73 VW Tesla Bus and '49 Pontiac
Replies: 29
Views: 6893

Re: '73 VW Tesla Bus and '49 Pontiac

Did you describe the specifics anywhere?
by johu
Sun Aug 25, 2024 1:35 pm
Forum: Nissan
Topic: Udc and idc increases when throttle is applied
Replies: 2
Views: 611

Re: Udc and idc increases when throttle is applied

Idc is calculated from AC currents and at low current seems inaccurate.
udc does indeed increase when the inverter starts pulsing, that is down to Nissans board or the way I interface to it.
So far it looks like nothing to worry about
by johu
Sat Aug 24, 2024 5:47 pm
Forum: Tesla
Topic: Any difference between V6 and V8 openinverter SDU boards?
Replies: 4
Views: 1181

Re: Any difference between V6 and V8 openinverter SDU boards?

github has all the answers :) I don't quite remember but I think V7 had the smaller footprint 5V supply
by johu
Tue Aug 20, 2024 3:53 pm
Forum: User Interface
Topic: ESP32 Can communcation issues
Replies: 2
Views: 1924

Re: ESP32 Can communcation issues

I will need to run some tests locally. I take it you're running 5.35.R on the inverter?