About Wireless Power Transmission
Because we wanted to create a design centered around aesthetic for our device, we chose to implement wireless charging for our battery.
There are plenty of ways to implement WPT. First of all there is near-field power transmission and far-field power transmission.
For our project, we will focus on a near-field power transmission. In this field, one of the most common technique is inductive coupling. But it is not the only one : capacitive coupling is an interesting technique for our project.
Capacitive coupling VS inductive coupling
Because inductive coupling is based on converting AC current to a magnetic field, there is a high risk that it will cause strong interferences and perturbations with the magnetic fields of the marbles, thus complicating our control over our device.… Read more