Hi guys, I'm currently on the project of building my first electric vehicle, but I have a problem with the controller (I guess).
Everything works great at low speed, but at around 1800 to 2000rpm, the motor speed drops down quite brutally, then goes up, drops down again, etc., like you would see on a gas engine with the rev limiter.
Please have a look at this video : https://mega.nz/#!9FZgkSBQ!2We1l1p6rBtGSsu_U67SMiofROuMwd8b8ypjRHWuvnY
I've checked the max speed settings, it's supposed to be 6000rpm, and with the motor I have, the controller could even be able to reach 12.000rpm.
It doesn't look like a software limit to me, because I tried to put the limit at 1000rpm to see what happens, and I found that the motor revs up quickly (because there's no load) but comes down gently to 1000, everything is smooth, not like in the video.
Here you can find screenshots of the settings :
https://mega.nz/#!pBIGQKYb!ghLHdVJaVcSg3sCl4_zu3c3XALBztJSjlWYTKktqOA0
https://mega.nz/#!kRQSxIZT!e6iUN082oiMjkxajehYRMN_3VYjl8oQD4UkygMOgnSs
The controller is a KLS6025S, and I don't know the ref of the motor but I know it's a 6 pole pairs BLDC motor.
Do you have any idea of what could cause that ?
Everything works great at low speed, but at around 1800 to 2000rpm, the motor speed drops down quite brutally, then goes up, drops down again, etc., like you would see on a gas engine with the rev limiter.
Please have a look at this video : https://mega.nz/#!9FZgkSBQ!2We1l1p6rBtGSsu_U67SMiofROuMwd8b8ypjRHWuvnY
I've checked the max speed settings, it's supposed to be 6000rpm, and with the motor I have, the controller could even be able to reach 12.000rpm.
It doesn't look like a software limit to me, because I tried to put the limit at 1000rpm to see what happens, and I found that the motor revs up quickly (because there's no load) but comes down gently to 1000, everything is smooth, not like in the video.
Here you can find screenshots of the settings :
https://mega.nz/#!pBIGQKYb!ghLHdVJaVcSg3sCl4_zu3c3XALBztJSjlWYTKktqOA0
https://mega.nz/#!kRQSxIZT!e6iUN082oiMjkxajehYRMN_3VYjl8oQD4UkygMOgnSs
The controller is a KLS6025S, and I don't know the ref of the motor but I know it's a 6 pole pairs BLDC motor.
Do you have any idea of what could cause that ?