Design of Coupling Coil Parameters for Wireless Charging Tram Based on Electromagnetic Safety

Table 6

Output performance of the system under different air gaps.

Air gap (cm)	1	3	5
Output power (theoretical) (W)	775.4	897.8	684.5
Output power (simulation) (W)	764.4	870.5	603.4
Output power (experiment) (W)	506.9	711.4	521.0
Efficiency (theoretical) (%)	97.5	99.1	99.2
Efficiency (simulation) (%)	96.4	95.4	92.3
Efficiency (experiment) (%)	90.6	89.7	85.3