Four 250 kW generators could be stacked for a combined capacity of 1 MW, the UK company said.
Its latest generator was assembled in the North East of England and is now at ORE Catapult’s center in Blyth for system testing “over the next few months”.
GreenSpur claims that using ferrite – an iron-based waste from steelmaking – is cheaper and more environmentally friendly than using rare earth elements (REE) typically used by wind turbine manufacturers.
Turbine manufacturers, as well as producers of electric vehicles and batteries, traditionally use ETRs in magnets.
However, extracting rare earths from surrounding deposits can cause severe pollution and can be an energy and water intensive process.
Rare earths also face significant price volatility as the demand for electric vehicles and battery storage increases.
China dominates the supply of these materials, and the ongoing trade war between the country and the United States could also prevent manufacturers from sourcing rare earths, Hine said.
Meanwhile, ferrite could lower manufacturing capital cost wind turbine generators up to a third, GreenSpur said. And unlike rare earths, as scrap steel, ferrite does not need to be mined.
GreenSpur had tested a three-module 75 kW generator at ORE Catapult’s facilities in Blyth in 2017.
He then signed an agreement with ORE Catapult and Warwick Manufacturing Group to build a 250 kW single-stage generator, which would be part of a four-stage 1 MW design.
The 1MW project is supported by a grant of 1.25 million pounds sterling (1.4 million euros) from the UK government.
That amount will cover a 250 kW unit, and GreenSpur is seeking additional funding, said Commercial Director Andrew Hine. Monthly wind energy.
The company plans to design more powerful single-stage units, reaching 2 MW for the onshore sector and 4 MW for the offshore.
These units could then be stacked to build more powerful generators, Hine explained.
He added that GreenSpur would consider a joint venture with a turbine manufacturer or an outside investment to secure financing for these larger and more expensive units.