50 hz VS 60 hz and a 120 HZ question

This group seems to have alot of electrical knowledge, sooo.....

The US is 60 HZ and Europe is 50 HZ, a 60HZ motor is more efficient,
so, what would happen if the US or the world for that matter would
switch to 120 HZ or maybe even as high as 400HZ (which is common in
aircraft). Motors and transformers would be much more efficient,
power savings could be enormous, both in transmission and use.

I realize this would have to be a 50 to 100 year task. Laws would
need to be passed and electronic devices would need to be sold that
would work on both frequencies. (many switching power supplies such as
in computers do not care what freq. power is input.)

I've read a bunch of articles about the newer inverter type welding
power sources that use 400 HZ and use small transformers and use much
less input power for the same output power.

I'm guessing it would take a panel of "experts" a few years to work
out the costs VS savings for this one. I've heard of some really
stupid things being studied by our government, maybe someone should
look into this.

I bought some old machinery from the Bethlehem Steel plant that was 25
cycle, WOW, talk about inefficient!! I had a 5hp motor that was built
on a 15 hp frame size.

Ideas, thoughts??

Biggest problem I think would be the generating end of things.

Thank You,
Randy

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