RE: Webinar highlights from USA3 Dec 2021 08:29
"So how do you remove hundreds of tons from the mass of a machine made of magnets, gears, iron cores, and kilometers of copper winding? Exchange the magnets and maybe even the copper winding for coils of superconductors.
Simple, right? Actually, no. Years-long multinational research efforts have recently concluded that, while feasible, building such a turbine would be a monumental tech challenge. And the case for doing so is weakening as permanent magnets get better and cheaper. In fact, a dark-horse competitor whose technology is based on permanent magnets is on track to nudge superconductors aside in the 10-MW realm. And unless either the economics or the attributes of superconductors greatly improveβ"
https://spectrum.ieee.org/the-troubled-quest-for-the-superconducting-wind-turbine
Lower cost = bigger = offshore = very low maintenance design. So excludes induction, gearboxes, cryogenics for superconductors. Many efforts made NeFeB magnets have no substitute.