Figures (15)  Tables (4)

    • Figure 1. 

      Equivalent circuit of the LCC-S WPT system.

    • Figure 2. 

      LCC-S primary side equivalent circuit.

    • Figure 3. 

      Curves of operating frequency and transmission characteristics.

    • Figure 4. 

      Curves of compensating inductance and transmission characteristics.

    • Figure 5. 

      Curves of load resistance and transmission characteristics.

    • Figure 6. 

      Visual comparison of chaotic mapping and stochastics.

    • Figure 7. 

      Comparison of Lévy flight and random walk.

    • Figure 8. 

      Comparison of the ChaosLPSO algorithm with the PSO algorithm.

    • Figure 9. 

      Effect of operating frequency on transmission efficiency.

    • Figure 10. 

      Simulation diagrams of the five operational modes. (a) Operating mode 1; (b) Operating mode 2; (c) Operating mode 3; (d) Operating mode 4; (e) Operating mode 5.

    • Figure 11. 

      Simulation results of the voltage of components.

    • Figure 12. 

      Simulation results of the current of components.

    • Figure 13. 

      The wireless charging experimental platform.

    • Figure 14. 

      Experimentally measured voltage and current waveforms. (a) Input voltage and current, (b) Output voltage and current.

    • Figure 15. 

      Voltage and current values of components. (a) Component voltage value, (b) component current value.

    • Parameter Numerical value Parameter Numerical value
      f0 (Hz) 85,000 C2 (nF) 48.99
      f (Hz) 85,000 Cf (nF) 99.73
      L1 (μH) 70.31 R1 (Ω) 0.15
      L2 (μH) 71.56 R2 (Ω) 0.15
      Lf (μH) 35.16 Rf (Ω) 0.15
      Uin (V) 50 RL (Ω) 10
      C1 (nF) 99.73

      Table 1. 

      Parameters of the LCC-S type WPT system.

    • Serial number Iteration number Fitness
      PSO 1 40 0.859
      2 33 0.7912
      3 50 0.912
      Chaos LPSO 1 32 0.939
      2 29 0.933
      3 37 0.9296

      Table 2. 

      Comparison of ChaosLPSO and PSO results.

    • Operating
      mode      		 Operating
      frequency f (Hz)      		 n (Lf/L1) RL (Ω) Transmission
      efficiency      		 Output
      power (W)
      1 85,000 0.5 10 0.9439 27.14
      2 82,159.9 0.12838 10 0.8594 326.4
      3 85,000 0.2465 10 0.9389 110.46
      4 85,000 0.2465 2 0.8795 456.97
      5 85,000 0.2465 20 0.9174 56.63

      Table 3. 

      Comparison of simulation results of five operating modes.

    • Transmission efficiency Output power (W)
      Operating mode 1 0.9267 26.25
      Operating mode 2 0.8365 319.64
      Operating mode 3 0.9211 108.36
      Operating mode 4 0.8692 446.97
      Operating mode 5 0.9137 54.92

      Table 4. 

      Comparison of experimental results of five operating modes.