I’m building an e-longboard for my graduation work. The construction progressed very well and I was able to do the first tests. So far so well there were only small problems, the idle tests worked great.
Now the problem occurred when I wanted to test the board under load. The engines shook and vibrated, but didn’t turn a bit.
But as soon as I pushed myself off and started to roll, they started to build up torque and it almost threw me off the board.
I’m assuming there’s something wrong with the rotating field. Or that the rotating field rotates too fast, that the wheel cannot build up any torque.
I would be glad if the community could help me with this problem, because there is a lot of know-how in this forum.
In my board are VESC, a hub motor N6364 from China and a self-made battery pack 12S3P made of INR18650 25R cells. My remote control is a typical china model.
This are my wheels and the VESC I use one for two motors.
Hera are the videos.
This is with no load attached.
This is with load attached.
I hope I have written all the necessary information and you can help me so that I can do my first manned test drives soon.
I thank you in advance for your helpfulness.
Thank you very much!
I think you have seen people using dual vescs. There are vescs our now that allow you to use to motors. They are basically just two vesc connected together
And sorry for the very late reply. I could only check the problem last weekend.
To do this I disconnected a motor and ran a new motor detection and blocked the motor again. I found the exact same problem.
Unfortunately I didn’t pay enough attention and short-circuited the phases, which destroyed the driver.
Now someone can tell me what and where the problem is, because now only one motor is connected via the VESC and the problem still exists.
The parameters have not been changed except for the parameters that are changed during motor detection
Yes, I burned the VESC. But by the short circuit of the phases. The driver broke.
But before that everything was OK or do you think that vesc was already broken?
Yes I did a motor detection before it burned, but it still didn’t work. The motor was shaking like in the video.
Maybe the problem is that the motors have no sensor wires and the vesc doesn’t like it?
I see they are suggesting the chinese dual hubmotor controllers but you already got a 12S battery and the chinese esc’s will work up to 50V.
So if you buy this:
http://www.diyeboard.com/v20-dual-hub-motors-sine-wave-foc-esc-speed-controller-p-674.html
You need to make sure you charge your batteries only up to around 4.15V per cell which is totally fine.