Hi,
I'm new to teh VESC controllers and E-vehcles in general so was looking for some guidance int he best way to configure my current project. I have built a Giant Lego GO-Kart which I have made electric powered.
My current hardware setup is as follows:
- Flipsky Dual VESC6 Plus
- 2 x Turnigy SK8 6374-149kv Senored Motor
- 12s 12A Turnigy Battery
The two motors are running together driving the same live axle, and I have auto-configured them in FOC mode. I have the App side setup in Current mode with brake no Reverse. They are running fairly well but I wouldn't know what an efficient setup would look like! Currently it seems that even without load when spinning up the wheel the motors will draw however much current I allow them. I would have thought they would spin up then back off, but maybe this is because I'm in current control mode rather tan speed control mode?
My plan is to eventually split the rear axle and have two live axles and make an electronics differential by controlling the two motor speeds separately. My issue is the Flipsky VESC6 has only one PWM input, and the CAN bus connected internally. So one question is, if I switch to UART based motor control, can I set two independent speeds for each motor even when hey are connected ont the CAN bus?
Any tips getting the most out of these motors would be appreciated.
Best regards
Matt
Did you configure the motors uncoupled and unloaded ? I think it is better to use current control for your application - the large current you see when unloaded does not seem normal. You could try each motor separately to check.
Hi, Yes i configured them uncoupled and unloaded. I will try again and without them coupled to see the difference in current consumption. I seem to remember even with one motor in current control mode the current was always at the maximum when flat out load or no-load, maybe that is normal as the ESC is controlling current rather than load related PWM or speed?
I just saw your video, awesome cart!!
Not sure if you got it sorted yet but that sounds very wrong, if the motor is unloaded and you use current control it should almost instantly go to 100% duty cycle and the current will fall to a few amps.
If you are using FOC it sounds like the detected motor parameters are wrong.
You can upload your .xml motor config file here so we can take a look if there is anything weird going on. A quick video of the motor running unloaded showing the realtime data graph in VESC Tool would also help.