Figures (12)  Tables (1)

    • Figure 1. 

      Configuration of 1TX-1RX system.

    • Figure 2. 

      Equivalent circuit under different control strategies. (a) Optimal load. (b) Optimal excitation.

    • Figure 3. 

      Coupler efficiency at different $ k $ and $ {I}_{tx} $.

    • Figure 4. 

      Efficiency of the 1-RX system under different coupling conditions.

    • Figure 5. 

      Efficiency when the coupling range changes.

    • Figure 6. 

      Simplified circuit model of one-TX n-RX system.

    • Figure 7. 

      Coupler efficiency of a 2-RX system under different coupling conditions.

    • Figure 8. 

      Efficiency comparison. (a) Case C: ηs,M (left), Δηc (right); (b) Δηc (left), Δηc (right).

    • Figure 9. 

      Experimental setup.

    • Figure 10. 

      Experimental waveform.

    • Figure 11. 

      Efficiency under different coupling conditions.

    • Figure 12. 

      (a) System efficiency ηs,M. (b) Efficiency drop: $ \Delta $ηs = ηs,opt − ηs,M.

    • Symbol Value Symbol Value Symbol Value
      f 100 kHz Ltx 91.3 μH rtx & rrx 0.195 Ω
      Lrx,1 22.3 μH rrx,1 0.059 Ω k1 [0.1, 0.34]
      Lrx,2 26.4 μH rrx,2 0.074 Ω k2 [0.15, 0.45]
      P1 15 W P2 10 W

      Table 1. 

      Parameters of 1TX-2RX IPT system.