Abstract: Power level improvement and lightweight are inevitable trends of electric vehicle wireless charging system (WCS). It is a critical issue that the lightweight design of WCS should consider the tolerance of extreme operation conditions. Based on the traditional parallel modular structure of high-power WCS, a compensation parameter configuration method of detuning receiver is proposed. The paper analyzes the energy transmission characteristics of this method, and it reveals that the method can suppress DC output fluctuation and has the ability of short-circuit tolerance. Furthermore, the overall design process of the high-power lightweight WCS with short-circuit tolerance is presented in order to optimize the output power and transmission efficiency. To verify the correctness of the proposed method and the effectiveness of the design process, a 3kW WCS prototype is designed and manufactured. The experimental results show that the improved WCS system can reach the efficiency of 95.7%, and its DC output pulsation and filter capacitance are reduced by nearly 80% and by about 90%, respectively, in comparison to those of the traditional WCS with LCC-S topology. Moreover, the short-circuit current of receiver is about 1.4 times the rated value, which shows a relatively strong short-circuit tolerance.