Thinking about the back electromotive force in a transformer, its a field that is generated when you extract energy from it with a second coil, and that field, cancel the other, so as the opposition to the variation of the field... and therefore reduce the effective inductance of the primary, by mutual induction coupling...
So a magnet approaching a shorted coil is repelled by it so there is what is called a BEMF
However in the situation here where the magnet is attracted to the center of the coil by the primary, while it is repelled by the secondary load... i think the key might be there... to cancel the BEMF from the secondary with the MMF of the magnet being attracted... because as the secondary is creating an opposing field, as long as the load BEMF is not heavier than the MMF attraction between primary and the magnet the magnet is allowed to move forwards...
I'm still not sure if attracting a magnet inside a coil consumes energy or not... I mean the same Steorn talked about... If you input energy into a coil you put it in form of amps, the lower the resistance and inductance, the lower is the energy you need to put amps into it (volts = joules/coulomb).. How many joules you need for each coulomb you pass thru it) But now, with the moving magnet as you input amps the inductance increases, so the energy accumulated into the coil should increases,,,
If that is so...
'Could it really be that simple?
'
If so a super conducting material and a way to pulse high amps low volts thru the coils would do the job?, to create energy... wouldn't
I'm not sure how the efficiency of a motor is determined... i think the losses in the wiring could be around 30% maybe not... in transformers can be less than 10%...
Stan said the problem with over unity is to avoid this BEMF...
Design the idea,.
You have a coil shorted.. and a magnet close to it... now you put a piece of iron at the other side of the coil so the magnet is attracted to the iron, pass inside the coil and generate a EMF on that coil which makes current flow... what happened there
If the experiment is repeated with coil not shorted, the time it take to the magnet get the other side is much smaller....
This tell me that the greater will be the load the lower will be the frequency...
So the magnetic potential in this configuration analogous to the gravitational potential energy is the same in both configurations but the it time takes to the first case is different... some how the energy conversion involve thereto a time relation... The slower the magnet flow the greater the energy is being consumed...
Interesting...