In order to overcome the instable resonance frequency of inductive power transmission system caused by impedance mismatch,a three-capacitor configuration array for dynamic tuning is proposed,and the relationship between resonant capacitance and system frequency is analyzed.Moreover,the value distribution,scope and out- put precision of capacitor array are discussed,and the capacitance value of the three-capacitor array is optimized by means of genetic algorithm.Simulated results indicate that,as the proposed three-capacitor array presents wide-scope output capacitance and high-precision adjustable capacitance,it can be applied to the system that requires large output capacitance range and high adjustable precision.