Analyses on Superposition Action in Diagonal DD Coils to Intensify IPT Power Capacity

摘要

To improve IPT capacity and efficiency, we put forward to the architecture of the diagonal DD coils and sought out the intensifying superposition action of the electromagnetic field acting to the mutual inductances. And, to distinguish the intensifying action in the DD paired coils from the architecture, it was needing to take away the affection by the pair number defined as the equivalent number counting how many single paired coils in calculating the integral of ML. Thus the superposition action of the magnetic fields may show a new view in the design of IPT pads. Based on the intensifying effect of the superposition, the diagonal-DD coils took a greater advantage of the superposition interactional field and were imaginative beyond the existing understanding in the design of IPT architectures comparing to the routine DD coils. In a conclusion, the diagonal-DD coils are better than the DD coils to increase the IPT power capacity because it used the current in two coils' side simultaneously contrast to use the current in one coil side of DD coils.