Short Circuit Analysis of a Fully Superconducting 10 MW Wind Generator

Abstract

Transient short circuit simulations of conventional machines are well known and offer the possibility of predicting the short circuit behavior of a machine with a high degree of accuracy. Although the ohmic resistance in the superconducting state is negligible, the non-linearity during quenching is difficult to integrate into a model. In order to predict the thermal or mechanical destruction of the superconductor, calculation models are required that take into account the classic machine models and the physical behavior of the superconductor. This paper presents an extended calculation model with a transient finite element (FE) simulation for a fully superconducting wind generator. The model considers the critical current of a superconductor with the influence of the layer structure of the High Temperature Superconducting (HTS) tape. In addition, an analytical calculation model is presented, which is compared with the FE model.