> a boost regulator after the stator doesn't really need an inductor, as
> we can exploit the stator itself for this purpose. Is my idea wrong?

Depends on the context. If you are talking about an automotive
(including motorcycle) alternator then you'd need to carefully watch
your insulation breakdown voltages.

Classic "Magnetos" worked in this manner AFAIR BUT were designed to do so.

Note that the wikipedia magneto page very loosely  uses the term for
both ignition systems and basic hand cranked alternators. Principle of
operation is different in each case.

This is roughly correct  http://science.howstuffworks.com/question375.htm

 Russell



>
> In practice I would "short" the stator via a MOSFET, which would be
> controlled by an oscillator. This way the peak voltage across the stator
> should become higher, without the need of the classical boost inductor.
>
> If it works, will it work also on the secondary of an AC transformer?
> Of course I will design the control logic to be very careful not to
> overload the source for a long time (I mean low % of duty cycle).
>
--=20
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