Thanks for all advice.
spargher : Could you give more explanation about harmonics please? What kind of motors and controls that should be awared of?
PWR : I understand that starting synchronous motor is more complicated than induction (and more protective relays?). I'm not quite sure that...
We are going to buy a motor for compressor drive. The motor is 3 MW, 333 rpm, 6600 V, 50 Hz. We were advised that synchronous motor is more suitable but it seems to have more initial investment and we have no experience with it.
- We were told that synchronous motor may cause harmonics problem...
