Comparing Armature Windings for a 10 MW Fully Superconducting Synchronous Wind Turbine Generator

Defining the armature winding in a fully superconducting generator means to make a fundamental design decision. Especially when using High Temperature Superconductors (HTS), this decision becomes more challenging, because the design has to comply with the general machine design constraints and the behaivor of the superconductor, which can contradict each other.This paper aims to introduce four different fully superconducting machine designs with different armature windings. Therefore, an integer slot distributed winding, a one and a two layer concentrated winding and an airgap winding, are investigated. For each winding a generator design is presented. By using FEM, the field distribution is calculated, which enables to estimate of the AC losses in order to make the overall performance of the four different machine designs becomes comparable.