Ok, perhaps the first post isn't clear enough !!
1. the 1st picture shows my own prototype that I did a few years ago.
2. the 2nd picture shows what a guy somewhere in the United States is trying to put into production through a crowdfunding scheme financing.
The system is definitely working, the rotor is fitted with permanent magnets, the stator with coils wired in series to increase voltage.
One of the possible advantages compared to hub dynamo is that you do not have to dissamble/assemble the wheel and it can work without introducing any additional mechanical friction !!