Hi,
Kindly ask what are the informations you need?
Informations regarding your noise:
you give some informations:
"1kW" --> most probably the noise still is there with a 2kW system, thus "1kW" gives us no information about your noise.
"controller" --> it can be everything. It gives us no information about your noise.
"48V and 30A" --> most probably the noise does not depend much on voltage of the system or current of the system, thus it gives us no information about your noise.
and so on
****
* most probably the noise is generated by your code (that´s why I already asked for your code)
* then fed through some circuit (that´s why I already asked for your code)
* maybe a filter?
* anything else?
* a cable?
* to the motor
All informations about "noise": frequencies, timing, jitter, useful scope picture, noise analysis ...
And if all this technical information is so "top secret" that you can provide, then a technical forum most probably can´t help.
Now, that´s your third post without progress in giving useful informations, thus I´ll leave the discussion to others. Good luck.
Klaus