Permanent Magnet Based Generator

Never happen.

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

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.

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

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

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.

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!

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

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

That's a brilliant site