Hi Maja,
I do not just want to criticize. I really like all kind of new ideas about bike techniques. I am convinced that there are still opportunities with the dynamos if you drop the traditional StVO requirements. Three-phase-current might e.g. be a realy promising idea.
I just wanted to know, where the possible benefit of this kind of dynamo is and apart from the easy installation on some (bikes using disc breeaks don't seem to be compatible), I don't see it. But lots of difficulties to solve...