Do you have two BMW packs, or do you mean 24ah?
https://www.car.info/en-se/bmw/x5/g05-m ... 5429/specs
I'm more then happy with this motor, I get 84kw out of this motor so in my opinion perfect power for this car. Easy driving in second gear from start to 100+ kmh.Romale wrote: ↑Sat Mar 25, 2023 2:46 pm a very beautiful car.
I'm really jealous)))
For such a car, there is very little of this motor and controller.
he needs a motor + inverter leaf gen 2 ! there you can get more than 150 kW of power and a great drive!
I once used a motor like yours for a snowmobile )
What Tom says, the modules are the same as the 12kw pack but the difference is that these modules are 8s2p configuration instead of 16s. Bms is also the same but reads only 8 cells per module off course.Boxster EV wrote: ↑Sat Mar 25, 2023 4:16 pm Excellent build. Thanks for sharing.
Do you have two BMW packs, or do you mean 24ah?
Hi, nice project. Interested in your coupler. We're working on 1949 Chrysler which has similar classic gearbox. How did your love-joy coupler ended up working? Did you later replace to a solid one? Also how did you get the alignment right when you made your extension box instead of the bellhousing? Thanks
the coupler is working fine until now. in my opinion a solid coupler is not the correct way top connect two shafts that have there own bearings, those are never aligned 100% so you want a bit of flex in between. otherwise something will wear out and if there is nothing flexible in between, metal will wear out. but that's just based on my mechanical experiences, this is my first conversion so you might get away with it too. the mounting bracket between the engine and gearbox are very precisely made with laser cutting. test fit done without coupling and checked whether the shafts align, this was the case, so then mounted with the coupling. the distance is so large because I do not want to shorten the original axis of the box.m.art.y wrote: ↑Sun Mar 26, 2023 7:40 pm Hi, nice project. Interested in your coupler. We're working on 1949 Chrysler which has similar classic gearbox. How did your love-joy coupler ended up working? Did you later replace to a solid one? Also how did you get the alignment right when you made your extension box instead of the bellhousing? Thanks
chart second gear.pdf chart third gear.pdf
I'm going far too easy on the little guy then, 450 phase Amps Really nice torque curve too, imagine it drives nicely!
The other possibility is that the Most Torque Per Amp (MTPA) algorithm isn't set up quite right for the motor. A small error in lqminusld, fluxlinkage or syncofs could all mean that the current being pushed through the motor isn't quite at the optimum phase angle for maximum torque. Your parameters look right based on what's known but it still might be worth adjusting lqminusld a little to see what effect it has?nathaniel wrote: ↑Tue May 09, 2023 10:04 am interesting to see that the motor actually reaches 115Nm where according to some graphs it should be around 130NM, that tells me that I can start pushing even more current through the windings. now i'm pushing around 600 phase amps, so that means i can go to 681 amps to reach the 130NM;)
Could be either an increase or decrease, no real way to tell which.
Did you ever try changing the resistor values or is that the next thing to try?
thx, i'm going to do some testing with that.
