Abstract: Aiming at the extraction of stray inductance parameters of a power converter, an LC resonance-based high-frequency oscillation method is proposed in this paper. By a series of converter on-site experiments, several resonant circuits are intentionally constructed, and the stray inductance parameters at different positions in power converter can be extracted by measuring the frequency of high-frequency oscillations. In this paper, the principle of the proposed high-frequency oscillation method is first introduced. The equivalent circuit models of different resonance experiments are established. Then, a 1700 V/450 A IGBT power converter system is taken as an example, and the feasibility and effectiveness of the high-frequency oscillation method are verified through simulation and experiment. Finally, the extraction results of the high-frequency oscillation method and the double-pulse testing method are compared and analyzed. The results show that the method proposed by the dissertation can effectively extract stray inductance parameters at different positions in a power converter, which is basically the same as the double-pulse testing method. The accuracy can achieve nH-level.