Characteristics of new method

A higher fill factor and higher reliability can be achieved with the Cassette Method, ideal for high efficient EV drive motor. Video prepared below

Cassette method video

Differences with conventional wire inserter methods

Achieve a high fill factor rate of 50% or more
(copper wire)

Perfect layer windings are passed cleanly into the slot, so that the alignment is improved and the fill factor is increased.

Low rate of scrap at production

The load applied when inserting the wire into the slot can be 1,000kg or more, resulting in damage to the wire.

Achieve a high fill factor rate of 50% or more
(copper wire)

Due to a reduced force of approx. 10kg when the wire is inserted, damage to wire is greatly limited.

When the wedge is inserted, the coils can be pushed between the slot liner and the wedge, and the insulation distance is reduced.

Possibility of further improvement of the fill factor

Only requires pushing coils on ends during wedge insertion.

Ensuring insulation distance for high voltages

Concept that helps prevent coils from moving during wedge insertion.

●Low coil end and high efficiency
●High controllability achieved by double-layered winding