Study on connection types of multi-dimensional receiving windings in a wireless power transmission system

Multi-dimensional receiving technology is an available method to overcome defects of a wireless power transmission system such as poor efficiency and instability. In present paper four different connection types of three-dimensional receiving windings have been studied. First, characteristics of every connection circuit are obtained by simulations and compared with each other. The results prove that the parallel connection after rectification topology is more feasible. Then, an actual circuit is fabricated to power an equivalent resistance and a LED. Based on this, the output voltage and its waveform are measured. The experimental results verify that this topology type can make full use of all voltages from multi-dimensional windings. It is suitable for the wireless power transmission system.