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Anonymous Poster

Permanent Magnet Based Generator

08/24/2010 11:19 AM

frends,

i want to design a permanent magnet based generator which should get energised by itself after initial start.

one way is to select a high capacity permanent magnet based generator which consumes diesel and run itself.second way is instead of a fuel battery is used to energise the rotor (permanenet magnet based)and it starts rotating using an external dc motor connected by battery.then the generator must produce so much energy that it starts supplying it to the same motor which had initially used battery to run the rotor.and whatever is the surplus electricity produced will be used for household activities.

thank you

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#1

Re: Permanent Magnet Based Generator

08/24/2010 11:27 AM
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Commentator

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#2

Re: Permanent Magnet Based Generator

08/24/2010 12:26 PM

Some generators already have a permanent magnet to power excitation, its needed for fault clearing (Breaker Tripping) on higher quality gensets

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#3

Re: Permanent Magnet Based Generator

08/24/2010 1:02 PM

You'd be better off attaching wires directly to the permanent magnet and siphoning off its electricity. Save money and don't use the rotor, battery, motor, etc. - the result is exactly the same in the end.

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#4

Re: Permanent Magnet Based Generator

08/24/2010 3:29 PM

Good luck to make a revolution in physics: power from nothing!

Better take a degree in physics to understand the IMPOSSIBILITY to do it.

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#5

Re: Permanent Magnet Based Generator

08/24/2010 4:10 PM

Deja vu, all over again. I guess we will just do this thread or something similar every week. What fun!

I wish someone would just build one that works, so I can get off the grid.

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#6

Re: Permanent Magnet Based Generator

08/24/2010 8:56 PM

Ahhh... memories.

I asked this question of my Dad when I was in fifth grade. Instead of answering it for me, he challenged me to make one and prove it. I did so with small motors from my erector set (which as it turned out were indeed PM motors) and D-cell batteries because I had already learned (the hard way) that motors can become generators. When it failed to work, he made me try to learn why. The explanation resulted in a school Science Fair project explaining conservation of energy and why perpetual motion cannot work for which I won first prize. That by the way sparked my lifelong interest in electricity and motors!

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#7
In reply to #6

Re: Permanent Magnet Based Generator

08/25/2010 1:12 AM

I hope the Industrial Applicaion of the concept is 'BRUSH LESS EXCITATION'.

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#8

Re: Permanent Magnet Based Generator

08/25/2010 2:18 AM

This is always worth a look when designing this sort of machine.

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#9
In reply to #8

Re: Permanent Magnet Based Generator

08/25/2010 12:41 PM

That's a brilliant site

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