Re: Why not 400 Hz AC?
- From: "Michael A. Terrell" <mike.terrell@xxxxxxxxxxxxx>
- Date: Mon, 30 Apr 2007 18:06:51 GMT
Eric R Snow wrote:
Reading the post about square wave AC I see that higher frequency AC
makes for noisy motors and transformers. Is this the only reason not
to use higher frequency power? It's obvious that smaller motors and
etc. could save tons of money so it seems that there must be a good
reason why everybody isn't switching to higher frequency devices.
Speaking of higher frquency, would it be economical to use inverters
to raise the frequency at the user's location so that smaller motors
could be used? I use VFDs on my machine tools but they still drive
physically large 60 Hz rated motors. I have them mounted in enclosures
so I don't hear the VFDs singing and the motors don't seem that noisy.
It is a machine shop though.
Thanks,
ERS
For the same reason 25 Hz was used in mines. Motor speed. Lets see
you use a VFD on a 400 HZ motor and get any usable torque out of it at
60 HZ or below.
--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.
Michael A. Terrell
Central Florida
.
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