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#129901 - 11/09/05 03:12 PM Voltage and frequency  
Dnkldorf  Offline
Member
Joined: Dec 2004
Posts: 1,064
nowhere usa
What is the relationship between these two, if any?

Can you possibly capture 180hz harmonic current and transform it back to 60hz so it can be re-used in the distribution system?


Sound far-fecthed?


Dnk....


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#129902 - 11/09/05 04:05 PM Re: Voltage and frequency  
IanR  Offline
Member
Joined: Dec 2004
Posts: 328
Palm Bay FL USA
I think it only goes one way. Higher harmonic multiples can be made from lower base frequencies only.


#129903 - 11/10/05 02:38 PM Re: Voltage and frequency  
mxslick  Offline
Member
Joined: Oct 2004
Posts: 803
Atomic City, ID USA
All I know is that a jolt with 115v, 400Hz aircraft power has a lot more hurt to it that standard 60Hz AC.

I found that out in the Air Force when I went to disconnect a mobile generator plug (Dash-60 for you military folks) from a particularily hostile A-10 aircraft. The next thing I knew I was on the ground at the next plane over, about 50 feet away!!

This happened because one leg of the three-phase contactor was defective and welded closed. and of course it happened to be the outermost pin on the connector!

Luckily it was monsoon season, I was sweating and soaking wet. The current entered my left palm and exited my right heel.

Ahhh, the fun! [Linked Image]


Stupid should be painful.

#129904 - 11/12/05 05:14 PM Re: Voltage and frequency  
JoeTestingEngr  Offline
Member
Joined: Nov 2005
Posts: 791
Chicago, Il.
I don't think you will get alot of usefull power out of your 3rd harmonic. You could probably design a low power tuned supply that only used the 180Hz + or - but I think it would have more use in "cleaning" the system than actually powering anything. You could maybe build an electric 3rd harmonica, but you couldn't play it anywhere with clean power. Seriously though, I doubt you could get past conversion losses to get it back into your distribution system.
Joe



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