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Interacción Bobina-Chasis

Referencia técnica sobre Interacción Bobina-Chasis para el diseño, integración e implementación de sistemas de energía inalámbrica.

6 minArtículo 41/50Diseño de Bobinas

Coil-to-Chassis Interaction — educational diagram — Fig.: Diagrama educativo de “Coil-to-Chassis Interaction”.

Coils never operate in free space on production docks. Steel frames, aluminum trays, fasteners, and reinforcement shift permeability and eddy-current paths. A receiver characterized on a plastic jig can measure 15–30% different L and materially different k when bolted to the AGV belly plate.

Coil-to-chassis interaction cuts both ways: chassis can shield leakage beneficially or add loss; it can also create unintended flux shortcuts that bypass the intended gap.

01Modeling and test

Include simplified chassis CAD in FEM with conductivity assigned.
Sweep coil mount standoff height — small changes matter.
Measure on golden vehicle at multiple battery states (load height).

Coil-to-Chassis Interaction — supporting diagram — Fig.: Ilustración de apoyo para “Coil-to-Chassis Interaction”.

02Mitigation

Standoffs between coil ferrite and steel. Dedicated aluminum flux barriers. Relocate coil away from parallel steel rails running under the winding. Document forbidden retrofit brackets near the coil zone in service manuals.

03Signs of bad interaction

Efficiency drops only on vehicle, not on bench mockup.
Chassis local heating during charge.
Navigation sensor errors correlated with charging (magnetic interference).