I always saw this as a gimmick. Give a throttle profile that makes a vehicle feel very powerful but drop your throttle granularity up top. Feels fast but not as smooth to drive. Pedal remap devices can help correct poor maps or can make the vehicle miserable to drive. Eco mode is flat until the pow...

Folks,

This idea came from another post....What if the acceleration profile can be change with an ECO/Sport mode buttons as a way to increase range (ECO) or increase performance (Sport).

Is this something that can be done with an SDU inverter board?

Regards,

It may happen... I just have to add two more relays to separate the Reverse & Forward motion signals to each SDU, activate/deactivate those relays depending on the mode selected, then a lot of road testing which I'm far away from it. Another thing I was thinking....instead of doing 2WD/AWD modes...

Will this really make much of a difference in terms of efficiency? I would assume, all things being equal, it would take x amount of force to keep the vehicle at a constant velocity. If you have 2 motors then each will be providing a proportion of x if you disconnect one now the other will be suppl...

The 2WD version of the the vehicle is always more efficient than the 4WD. Partly explained by the weight difference but not just that. Also most 4WD vehicles use a PM motor in the rear and async motor in front. It only steps into action on high torque requests. For fine grained control I'd suggest ...

What type is your motor that you plan to freewheel like that? If it is a permanent magnet type of motor if won't be just the inverter drawing from 12v. Motor will be drawing couple amps from HV battery also. It is a Tesla SDU, If it draws some current from the HV battery that will be fine, but stil...

Looked into this with another customer. If there is no way to physically disconnect the motor from the drivetrain for cruising when not used then preferably it has to be the induction type of motor. PMSM will draw a little bit of current even when freewheeling. No, I do not have a mechanism to disc...

Does it make a difference in consumption to run in the one motor in neutral? I understand, some cars have a mechanical clutch to decouple the motor if not used. I believe so, I won't be "0" if I followed what Johu suggested, basically the inverter board will be consuming from the 12 volt ...

@ Johu
ok, pardon my ignorance but if I cut the motion direction (will be in neutral) on the run to go from AWD to 2WD or vise versa the OI board will not regen? Do I need to change a parameter on the controller board?

Folks, My project is a dual motor set up, for the moment I'm thinking to do an AWD application, but what about having the option for ECO (2WD) which I configure with my control set up, with the push of a button for extended range and cruising. So what would be the correct approach to dis-able the mo...

Guys thanks for the valuable info, looks like I'll stick with the brake switch for now

Hi There, I just found a good battery module for my application, but before pulling the trigger and buy the modules would like to check what is the maximum nominal voltage that the SDU can work. Here is the scenario 1: (8S) 4.6 kWh modules @ 48 V = 384 VDC, 36.8 kWh. Just thinking to increase the ca...

Hi There, Pardon my ignorance...I will assume that brake pressure transducer isn't mandatory with OI board, but will be needed if I want to do regen. I was looking on-line but there isn't too much information about it out there. My car is not intended to be a daily driver. Do you guys recommend rege...

Hi There, I would like to know how you guys are doing for the A/C system specifically the heating part...Since the Tesla Model S evaporator unit is to big for my application and I'm not familiar with let's say the Nissan Leaf or any other EV evaporator I'm planning to use a Restomod Air unit. This u...

The wifi name can be changed via the web interface. For a different ip address you will need to change the code. I may know the answer already...but I still have to ask to make sure. It appears that changing the name of the WIFI module is pretty straight forward, no the IP address, can I still conn...

Folks, I have a dual motor set up, already work with the F-SDU and have it running, I'm about to start working with the R-SDU, is there a way to change the WIFI module IP Address and name, so I can have them in different IP Addresses and access them individually but at the same time, same for the Ge...

Guys, I ran into the situation that the Model S 100D I got as a donor, have 3 different gauges 1/0 for the R-SDU, 2/0 for the HVJB in the front and 3/0 for the charger. Since most level 2 chargers only output 50 amps and I'm not planning to use superchargers, I was wondering if I can downgrade to aw...

guys just want to share my design The battery circuit will use 3/4" (19mm) tubing that matches the Yamaha Raptor 700 2019 radiator Inlet & Outlet ports The SDU's circuit will have 1" (25mm) tubing. Parallel Tubing to the SDU's will be same length as much as possible. [img GT8e_cooling_...

Guys, I appreciated the info...I guess will go with the two radiators approach wich appears to be more cooling capacity than OEM. Wont put the fans, and see how it does, this car isn't intended to be a daily driver anyways. Will follow P.S. Manglesdorf advice on using two pumps on the SDU's coolant ...

Hi There, Due to space constraints I'm planning to use two cooling circuits with 2 small radiators out of a Yamaha 700 ATV. One circuit will be dedicated to the battery and the other will take care of both SDU's the DC/DC converter and the charger when charging. obviously one radiator per circuit. L...

Folks, This may sound really stupid, but I need to make sure, nobody in its right mind wants to fry an Inverter...so I already followed Damien's video https://www.youtube.com/watch?v=ZvlzGm709zg and I have everything set up to start spinning the motor for the 1st time at a 56 volts DC, but what is t...

Watching this thread... Mine does the same thing. So far I've been running the motor using half of my pack 116VDC (udcmin=100vdc) and the max I get out of potnom is 0.09. I can post the plots later. I'm on the latest firmware. The motor spins though. I'm switching between different tasks of the con...

@Johu
Thanks for the info, that makes sense. Im following Damien's video word by word so I had udcmin =0, will try your suggestion and see. But I have to check the encoder 1st

Regardless the scaling, I should see potnom different than "0", but I tried setting potmin = 1000, tried 1050 and 1100, potnom = 0 in all cases. Then switch to the 2nd throttle cables still potnom = 0 even when I can see the pot value icreasin/decreasing will the pedal angle.

Guys, After I hooked up the throttle pedal (from a 2017 Model S) I followed the instructions as per https://openinverter.org/wiki/Schematics_and_Instructions#Connecting_the_throttle_pot . I set my potmin = 900 (actual reading 956) then set potmax = 4000 (actual reading 4095) but still reading 0% on ...