Since this is folder to publish BMS related stuff i am adding this DIY BMS originaly made by Neville Harlick of NZ and changed a bit by me. It was intended to be used for Low level balancing after a long drive, but software was adapted to support High level balancing. Balancing is not initiated ever...

Its alive! I installed the latest firmware rev 4.12R and it meant worlds! It turns out it is very important how the phases are connected. I went through couple variations. I even had to change wires on resolver cos to get rotation. But finally motor spun at 600rpm. Well it spun also at 300rpm etc......

Before when I had idle on motor started rotation immediately after start button. After a revolution or two it tripped OClimit depending on the boost setting. If I have idle off I get nothing on startup and nothing if I apply throttle, well except amps heating up two phases. I will now rotate motor w...

1. I think 1.55V is fine also. You just need to see a good sine wave with no saturation. 2. Boost is likely to vary with different inverter and motor. But I think you can leave it like that for now 3. This happens when sine/cosine are swapped. Try changing it. I assume at the phase angle where the ...

I have assembled a universal driving station, so i can connect any inverter i have built and test it outside a car. Providing i can connect it to my type of connector. I have tried to run Leaf motor with it. 1. When i connected new Ampera inverter i had some trouble with connecting 5V to resolver. I...

Can you tell how would you distribute logic units? Are they full blown Johannes units? I recommend adding Lebowski brain as MG2 to have sensorless BLDC generator or rear motor application possibility. Also i wonder if it wouldnt be good to account for buck/boost module as EMW charger? Hm... my mad s...

Righto. That would be a better idea. The PTC I'm considering is 200-600V 1000W AC or DC input. Just need to check the dimensions which will be the limiting factor as to maximum output. So this means it could be powered directly from the battery pack? I am still trying to start 5kW Ampera heater. It...

Thanks :) Well if I tilt the profiles a bit I can actually use the existing guiding pins of the Leaf motor. Of course it can still twist but not shift. I can use another set of guiding pins between the profiles and the 10mm plate. The Leaf motor is slightly tilted to stay clear of the drive shaft. ...

OK, thanks 60mph isnt a really a good top speed then then :cry: , what is the maximum RPM thats J huebner controller will go up to ? Sure, but you have to consider that at 4000rpm motor produces 200Nm and at 10000rpm it can produce only be 75Nm! That shouldnt demand too much current then? I imagine...

I have tried regen with my wifes Ampera on a prolonged highway hill and from 25km i got to 80km range! The hill was some 15km in range with enough incline to drive at 100km/h in regen. In the final stretch car simply refused to store more energy. I also noticed difference with battery chemistry. On ...

Can you test with the current software first? I would really like to know what the ideal syncofs is and what rpm can be reached. I'm not quite ready to test my self so it will be sort of hard to know what I'm doing. However I could make a parameter like degree/Hz that tells the controller how much ...

I had the same idea for the transmission plate on my Mazda some years back. And it works. You just make a template from some wardrobe back or plywood and translate that to alu plate. While you saw it with jigsaw get someone to spray some WD40 on the blade in regular intervals. It helps with alu stic...

I used a clutch bearing. It was just enough space to fit. Also from the back i used some shims to close it up so there is some 5mm between bearing and couipling end. Since i used thermal fit splines were so tight i had to hammer the coupler on the shaft. Bearing is more of a backup... See this for a...

yes and those who use the complete drive unit with only one gear. Here here! I intend to use Leaf motor with original diff and 360Vdc system. I must get to 10Krpm at least to have 140km/h speed. If you will not support this i will be forced to use lebowski board. Not ideal but at least it can go 20...

Thanks for the info. Since I'm planning to use a Leaf drive system in a car of similar weight whilst driving as conservatively as possible and since the Leaf has no battery thermal management I thought I wouldn't either. In New Zealand where I live I would expect to have half a dozen or so frosts d...

Welcome. I just hope it works off the bench. @doobedoobedo, can this schetch be made to work with 0RPM input. Like say if you have 0rpm on the motor program would still give you 800rpm. Better yet, for the range 0rpm to 800rpm system could just state 800rpm. A sort of neutral without neutral.... Th...

I am getting the Panzer back next week and have a problem with the speedometer. In the 8 series the speedo is fed by pulses from a reed switch and magnet mounted in the differential. As the diff is no longer there due to the Tesla drive unit swap I needed another way to feed the speedometer signal....

I am now drawing brd for resolver card and making one proof of concept alongside. I would like to know from those who had done it already, is it better if i install one 12V regulator to have precise 12V or is 12.8Vdc good enough from the car? I can get one small 5V to 12V stepup from china and i can...

Hello arber333. Thank you for your efforts in evaluating the deadtimes. From your information could there be a window of minimum and maximum deadtimes that can be recommended ? Obviously too little deadtime can lead to shoot through but what about too much deadtime, what would be the effect please?...

Yes, interesting. Without field weakening 1080rpm@60V. That is 6500rpm@360V. Actually quite a usable speed. The extra current for field weakening is really high, I'd rather shift gear :) Hi Johannes What about those who run 200Vdc systems? Dont write them off just yet. Also we are using 600A switch...

Yes the point of udcnom is to automatically determine the values for fweak and boost should the voltage be unequal to udcnom. You can see the result of the calculation in boostcalc and fweakcalc. iacmax the topic of the week :) iacmax tries to preempt over current shutdown by reducing slip and outp...

I found Arlos comment on weakening here: https://endless-sphere.com/forums/viewtopic.php?f=30&t=63982&p=1303708&hilit=weakening#p1303708 and here: https://endless-sphere.com/forums/viewtopic.php?f=30&t=63982&p=1271932&hilit=weakening#p1271932 So he can rev the motor to 14Krpm...

Hm... may be adding another driver for additional IGBT module and connecting it to motor winding can make a (not so)separate 1phase charger providing some additional connection and control inside box.
Well firmware should support the 4th IGBT too...

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@ PRB617: i think you misunderstood, the point is to use motor windings + inverter transistors to excite current flow through cells while stationary. That way one could sit in a car turn on seat heater and/or Webasto and wait some time for battery to raise temperature. It is ingenious and if it is s...

Let me console you... i am a mechanical engineer with little prior education in electrical before i started EV. I then gradually upgraded my understanding of EE concepts until i understootd basics of inverter operation. I can apply different feedback loops and know how to set parameters etc... but s...