Transverse Flux Machines (TFMs) are brushless motors and generators that use permanent magnets. A TFM’s direction of magnetic flux is perpendicular to the direction of force, instead of parallel to it, as in a standard electric motor or generator. The machines are also inherently lighter, smaller, more power dense, and more powerful.

Using pre-constructed parts, a suite of technologies provides a cost-effective way to manufacture Transverse Flux Machines. The UTC process uses about half of the copper and 25% less steel than an equivalent standard permanent magnet brushless motor. The internal components — in particular the U-shaped stator parts — are manufactured through sintering, lamination, and assembly rather than by machining. EV carmakers are likely to benefit from the costsaving process.

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