Figures (9)  Tables (3)

    • Figure 1. 

      Typical circuit model of WPT system.

    • Figure 2. 

      Simplified structure of a LCC-S WPT system.

    • Figure 3. 

      System output characteristics. (a) load variation, and (b) coupling coefficient variation.

    • Figure 4. 

      Multi-objective parameter optimization process based on NSGA-II.

    • Figure 5. 

      Multi-objective optimization results.

    • Figure 6. 

      Experimental setup of LCC-S WPT system.

    • Figure 7. 

      Experimental results of set-I (a) inverter output, and (b) load.

    • Figure 8. 

      Experimental results of set-II (a) inverter output, and (b) load.

    • Figure 9. 

      Experimental results (a) coupling coefficient variation, and (b) load variation.

    • Method Main objective Limitation Ref.
      Genetic algorithm Compensation-network design for improving efficiency and power Does not explicitly consider both load and coupling coefficient variations in a unified framework [18]
      Analytical design Parameter design for power and efficiency improvement Mainly condition-specific design, without multi-objective optimization [19]
      Multi-objective optimization Efficiency and power optimization under dynamic conditions Does not focus on LCC-S compensation-parameter design with improved constraint-aware search [20]
      Parametric sweep simulation Performance analysis under parameter and misalignment variations Relies on discrete scanning, inefficient for multi-variable tradeoff optimization [21]
      Improved NSGA-II Robust multi-objective LCC-S compensation-parameter optimization under load and coupling coefficient variations Requires iterative optimization This article

      Table 1. 

      Comparison with representative optimization-based WPT design studies.

    • ParameterValueParameterValueParameterValue
      Uab20 VLP12 μHf(1, 150) kHz
      LP29.8 μHLS30.2 μHk0.1, 0.15, 0.25
      RP150.94 mΩRS126.08 mΩRL5, 10, 20

      Table 2. 

      Parameter setting for output characteristic analysis.

    • SymbolValueSymbolValue
      Uab20 Vf100 kHz
      LP99.69 μHLS100.5 μH
      RP194.2 mΩRS225.8 mΩ
      LP1 (set-I)20.9 μHLP1 (set-II)25.24 μH
      CP1 (set-I)120.5 nFCP1 (set-II)100.5 nF
      CP (set-I)32.95 nFCP (set-II)33.3 nF
      CS (set-I)24.73 nFCS (set-II)24.73 nF
      RL[5, 5, 25 ] Ωk[0.12, 0.04, 0.24]

      Table 3. 

      Experimental parameter setting.