OK, perhaps a little background will help my question. I have 350 hp motors on refrigerant compressors. Due to the fact that the colder you are gas density is lowered, the calculated horsepower requirement in some of our operation stages is about 170 hp. I need to stay with same rpm and need the...
I have been told that using a VFD on a partly loaded motor will reduce my power bill. Is this valid and why. I am getting unclear answers from my power/control guys. Where I am located I do not have a penalty for power factor.
thanks
Dan
