Electromagnetic engineers GreenSpur Renewables previously developed the "world’s first ferrite-based direct-drive permanent-magnet generator" capable of multi-MW generation.
It hopes by only using ferrite magnets, it can remove a reliance on rare earth magnets.
UK-based GreenSpur is due to test a 250kW stage of a 1MW generator at the ORE Catapult centre in early 2019, it stated.
It is also working with motor and generator research institution, the Warwick Manufacturing Group, to model an up-to-10MW generator design.
Hall added GreenSpur’s axial-flux direct-drive generator is the first he has seen "that can credibly use low-cost ferrite magnets at multi-MW levels."
Hall left SGRE in October 2017 as part of the turbine manufacturer’s first minor reshuffle of its top team.