Figures (8)  Tables (1)

    • Figure 1. 

      Schematic diagram of alternating winding of inner and outer turns.

    • Figure 2. 

      Equivalent circuit of coil structure. (a) Equivalent circuit diagram. (b) Node voltage distribution diagram of the proposed method.

    • Figure 3. 

      Capacitor placement design procedure.

    • Figure 4. 

      Structural diagram of the interleaved winding coil system used in the ITAP method system.

    • Figure 5. 

      (a) 3D simulation model of ITAP coil structure. (b) Top view of the transmitting coil and the position of the compensation capacitor. (c) Magnetic and electric field distribution.

    • Figure 6. 

      Experimental setup.

    • Figure 7. 

      The operating waveform of the ITAP system and the efficiency comparison curves.

    • Figure 8. 

      The variation of transmission efficiency with output power.

    • Parameters Values
      Two-side coil currents 11.5 A/13 A
      Resonant frequency 85 kHz
      Shielding plate dimension 500 mm × 500 mm × 2 mm
      Ferrite core dimension 460 mm × 460 mm × 5 mm
      Coil dimension 400 mm × 400 mm × 2.5 mm
      Number of turns 22 turns
      Coil inductance 336.4 μH
      Cpi, Csi, i = 1, 2, 3, 4 45.6 nF
      Non-segmented capacitor value Cp 11.4 nF

      Table 1. 

      Coil setup parameters.