Giant future PM generators are beginning to stack up

Pioneering wind turbine generator designer NGenTec is pressing ahead with a fast-track campaign of testing to commercialise its “stackable” permanent-magnet rotor technology, boosted by a UK government grant of almost £800,000 ($1.29m).

Early trials of the Edinburgh-based company’s modular 1MW axial-flux air-cored permanent-magnet generator (PMG) have been shown to “meet, or exceed, the set design criteria and performance characteristics” of the concept, clearing the way for a follow-on battery of endurance testing.

The generator has been fashioned to work as a section of a 6MW machine but is suitable for drivetrains rated “in excess of 10MW”.

“The 1MW design has all the features of a very large generator concept,” says NGenTec chief executive Makhlouf Benatmane. “This testing programme is proving the…

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