I just saw a description of a ring style generator for a wind turbine https://www.megawindforce.com/ :
https://www.megawindforce.com/technology/performance
The ring structure acts as both rotor and generator. The design allows an airgap speed of over 25 m/s as opposed to existing direct drive designs, which are limited to 5 m/s. In addition, the generator works at high frequency with adaptive cooling, resulting in a significant 95% weight reduction of the generator.
The flexible and scalable generator starts at a minimum of 2 m/s and increases output up to 25 m/s; output can be optimized per wind area. The generator consists of various scalable units.
More info on:
https://cdn.pes.eu.com/v/20180916/wp-content/uploads/2018/09/PES-W-3-18-MegaWindForce-Talking-Point-1.pdf
What do you think? Is there any possibility for an AWES flygen rotor?