A new type of power supply for excitation mechanism of motor in electrical appliance

In this paper, we propose a new type of brushless excitation mechanism. Powering the motor exciting winding by wireless power transmission (WPT) based on magnetically-coupled resonance can be an efficient way to avoid mechanical connection of the rotor and the external terminal, and achieve brushless excitation conveniently and economically in a novel method. The constituent parts of this excitation mechanism and the way they work together are introduced. We also design different types of resonators for different excitation demands. The electromagnetic environment of this mechanism is studied and some confirmatory experiments are carried out, the results reveal the effectiveness.