Proper acceleration and regeneration throughout the whole RPM band
Posted: Wed Sep 22, 2021 4:05 pm
Hi fellow enthusiasts,
after almost driving my conversion for two years now i would like to open a topic on a subject that i think is something that will push all conversions a big step towards that factory feeling:
There seems to be something wrong with the calculation of the basic inverter parameters that spin the motor. It is not consistent through the RPM range. In the low RPMs there is less power than in an original Leaf, then from 2000 till 3500 there is full power and then it gets less. Of course it cant maintain the power on the upper end of the RPM, but still it feels rougher than in an OEM vehicle. Next subject would be regen. I called Johannes about this with the idea to instead set a certain percentage of regeneration we rather should set a target value in KW or Amp. So we would maintain the same amount of regen while decelerating through a certain range of RPM. He told me that's the way it already is. But also here it is obviousely not as good as it could be. He already told me it's about the motor, the resolver and especially the math. I hope Johannes will explain this more detailed to get the people on board of this that we actually need! I also hope that we can puplicly discuss that subject and hopefully get the information to put in the inverter source code.
My intension here is that hopefully someone will come up with the solution for this.
Also i'm happy to invest some money in the research of this, like i did before with the more meaningful Ampere-Limits! if you can't solve this problem on your own like me, maybe you would also like to invest some money in the research by Johannes. He's never let me down when i had a problem with something, so i'm sure if he can gather the right information he'll solve this, too! And please don't get me wrong - i love to drive my conversion. But compared to my OEM EV (Ioniq) it just doesn't feel right and i think it could be!
Cheers, Philip
after almost driving my conversion for two years now i would like to open a topic on a subject that i think is something that will push all conversions a big step towards that factory feeling:
There seems to be something wrong with the calculation of the basic inverter parameters that spin the motor. It is not consistent through the RPM range. In the low RPMs there is less power than in an original Leaf, then from 2000 till 3500 there is full power and then it gets less. Of course it cant maintain the power on the upper end of the RPM, but still it feels rougher than in an OEM vehicle. Next subject would be regen. I called Johannes about this with the idea to instead set a certain percentage of regeneration we rather should set a target value in KW or Amp. So we would maintain the same amount of regen while decelerating through a certain range of RPM. He told me that's the way it already is. But also here it is obviousely not as good as it could be. He already told me it's about the motor, the resolver and especially the math. I hope Johannes will explain this more detailed to get the people on board of this that we actually need! I also hope that we can puplicly discuss that subject and hopefully get the information to put in the inverter source code.
My intension here is that hopefully someone will come up with the solution for this.
Also i'm happy to invest some money in the research of this, like i did before with the more meaningful Ampere-Limits! if you can't solve this problem on your own like me, maybe you would also like to invest some money in the research by Johannes. He's never let me down when i had a problem with something, so i'm sure if he can gather the right information he'll solve this, too! And please don't get me wrong - i love to drive my conversion. But compared to my OEM EV (Ioniq) it just doesn't feel right and i think it could be!
Cheers, Philip