Uncertainty Quantification of Wireless Power Transfer Systems

In this paper, the uncertainty of electric properties of wireless power transfer systems due to uncertain geometric design parameters is analyzed. An electromagnetic simulation tool, based on an integral formulation, is coupled with a stochastic method that quantitatively determines the contribution of each uncertain design variable to the output uncertainty in terms of Sobol' indices. A generalized polynomial chaos expansion -being a state-of-art surrogate modeling method-is used to reduce the computational cost involved by these stochastic simulations. The performance of the proposed method is illustrated via the analysis of a resonant wireless power transfer chain.