Hello All,
I am trying to get a Flipsky Electric Skateboard Motor BLDC 5065 270KV 1550W to work using a Flipsky V4 VESC driver.
So lets talk sensorless first:
I am using the VESC Tool to flash the firmware and then configure the motor. I have used the wizzard to configure the motor. When I try to run the motor at any speed, its way off, by a factor of 10. I have a hand held odometer that I am checking the speed with. If I type 5000 rpm into the VESC tool, the motor will spin at ~500 rpm. The continues up the rpm range until it caps out at 33500 rpm, but the motor is really doing ~4000 rpm, after this the motor spins no faster. I can input 50000 rpm and still only get ~4000 rpm. This happens in both BLDC and FOC modes. The motor is 270KV and the system is 24V so should be able to get to 6000rpm, right?
Does anyone have any idea why there is this RPM factor? or why the RPM is capped?
Now, if I try to run sensored, even worse, the hall effects aren't even detected, so I suspect their might be some damage but all of the sensors not working, is that likely? I have ordered a new motor regardless. Anyone had any experience with the sensors not being detected?
Any help very appreciated,
Tony
Read this about ERPM limits: https://vesc-project.com/node/183
Check your hallsensor cables.
Link to forum post: VESC help offered for private persons and companies
Website: www.electricfox.de
The motor was damaged. Used a new motor and I can now read the hall sensors.
There is still a strange, rough 7.35 factor in the speed control though.Why the requested rpm has to be 7.35x larger than desired speed I have no idea.
Tony
Also turns out the quoted kv is just wildly off, so i ran it at 48V and the rpm cap was lifted.
Tony