Hardware arduino

hey! i would like to run a 1kw,2kw,3kw or 4kw 3 phase uvw BLDC motor on arduino, could someone tell me which microcontroller i need for that and what i need to pay attention to in order to connect a motor driver to it

Just about any microcontroller will work, as it does not have much to do except send speed and direction commands. Pick the motor and motor driver first.

Oke for example this motor: https://a.aliexpress.com/_EQTij61
With a sevcon controller wil work ? To control it with arduino ?

I have no clue as to which sevcon controller your looking at. They have several and more then one may work. Posting a link would help. Have you looked at VFD (Variable Frequency Drive) control units? It is hard to guess what your power source is so I will go with 220 50/60 cycle 3 phase, update that.

normally i make boats electric, so i know how the installation should look like. but now i want to know how to control a motor by means of a controller and arduino, that's why i'm asking here. i want to make my scooter electric with a 1/2/3kw bldc motor we always work with 48v so that seemed the most convenient to me i would prefer to put a throttle on it. my first goal is to get the motor running by means of arduino and what i need for that i don't know exactly hopefully someone can help me