Cross coupling between lightning conductor and signal lines within rotor blades

In this work we investigate the Electromagnetic Compatibility of an instrumented rotor blade. Particularly, the cross coupling between lightning conductor and signal lines within the rotor blade is calculated. Here, we use the well-known theory of multiconductor transmission lines. The calculations are compared with simulations. Generally, a very good agreement can be observed. Further, the efficienc of several EMC measures like twisting and shielding is analyzed. Finally, an appropriate separation distance is estimated to avoid voltage flash vers.