However, at speed, the inductance of the coils increases, proportionate to speed, and dominates the impedance of the coils, and this delays the phase of the current peak so that induced current in the track coincides with the field peaks of the magnet array.
However, at speed, the impedance of the coils increases, proportionate to speed, and dominates the composite impedance of the coil assemblies. This delays the phase of the current peak so that induced current in the track tends more to coincide with the field peaks of the magnet array.