I am working though a one (or two) motor kick-scooter design and specifying a reasonably sized motor controller has been challenging until stumbling upon the VESC Project.
I'm looking for some controller recommendations that will pair well with the battery I plan on using:
Battery:
72V nominal voltage (84v Fully charged)
20S10P
40ah
50A continuous discharge
100A peak discharge
Hello everyone!
This is my first post on the VESC project forums. I am not sure if this is the right forum to ask this question in so, if this topic would be more suitable for another forum here please do let me know!
OK. I've perhaps been abit of a tit.
I have purchased a flipsky Mini FSESC4.20. While I was waiting a week for it to arrive I noticed the maximum voltage of this VESC is 60v... so I calculated that at maximum charge I can build a 14s battery which gives 58v.
I have a FSESC4.2 with 2 hoverboards hubs . FOC mode and 12s battery ... good détection , smooth running ..
But a growl under heavy braking. I made a log of each vesc. the master (where the receiver of my vx2 is connected) has a strange behavior. from the vertical line, soft braking (no noise) and then hard braking. we see the duty and the motor current that delirious. it is proportional to the braking / regen current. currently at -25 / -20A. I need these values to brake properly. An idea ?
I have a basicaly new TrampaBoards 100v/250a vesc with blue tooth module stuffed inside a Sabvoton Heat sink for ease of mounting,waterproofing and connecting ect.£300 if anyone is interested?UK only pls
Cheers
We had a catastrophic failure today on a VESC 75/300 based unit (3rd party not Trampa). It happened during a long (10 minute) regen when the as5047 encoder became disconnected (unplugged) whilst we were commanding a brake current of 10A, I don't know if the encoder disconnection was the cause or just a coincidence as I only noticed after the fire had stopped. Battery was at 60v and regen voltage was significantly lower.
All but 3 of 18 fets burnt out which suggests a shoot through.
Hi Benjamin,
I was trying to analyse the impact of the analog current filters in the control loops. It seems there is only a little amount of lowpassing on the current sensors of the VESC 6 MK III. I tried to find the R and C values in the schematics, but was not able to find these for the MK III.
I was looking at the schematic of the MK V, but I expect that it must have a different design. Those filters should definitely be visible in my measurement.
Can you please give me the MK III schematic, or the R and C values of the lowpass filter?
I have the VESC 6 MkV, a 36V supply, and a 900W BLDC sensorless e-bike motor. Using a simple POT in the PPM input to control speed, mapping it as duty cycle no reverse or PID no reverse (both seem to work fine, duty cycle is a little smoother). I can only get the motor to run around 2700 rpm when it should be able to reach 5000 rpm. Are there any settings in the VESC Tool that I need to change? I set the max ERPM to allow it to go to 5000 rpm, shouldn't it just work?
Dear colleagues,
during the tests, I noticed that the current consumed by the VESC is highly distorted. Should it be like that on? There are no capacitive filters on the DC power supply?
Best Regard
Mike
Hello,
