Finite-Element Analysis of a 15-MW High-Temperature Superconductor Synchronous Generator for Offshore Wind Energy Applications

High-temperature superconductor synchronous generators (HTSSGs) with direct drive technology for offshore wind energy applications are an alternative to consider due to their low dimensions and low weight per megawatt compared with large conventional offshore wind synchronous generators. This paper presents a detailed 2-D finite-element (FE) analysis of a 15-MW HTSSG for offshore wind energy applications, including an independent high-temperature superconductor electromagnetic model function on the operational temperature and the external magnetic field applied. The FE analysis consists of a static steady state, a no-load, and a rated-load study of a 15-MW HTSSG. The analysis validates analytical calculations developed in previous studies and demonstrates the electromagnetic feasibility of a 15-MW HTSSG.