195 / 2022-03-14 17:34:55

Kriging-POD Surrogate Approaches for Nonlinear Electroquasistatic Problem in Reduced Order Model

Nonlinear analysis,reduced order model,surrogate model,Electrical conductivity,converter transformer

In insulation evaluation of converter transformer, the nonlinear iteration is a computation burden in electroquasistatic analysis. In this paper, a reduced-order model (ROM) combining proper orthogonal decomposition (POD) with Kriging model is constructed to decrease the computation complexity. As the non-intrusive ROM, the surrogate model based on Kriging would approximate the nonlinear term without constructing the stiffness matrix, which will improve the efficiency obviously.