Performance of superconducting generators with different topologies under fault conditions

Abstract

This paper compares the short-circuit performance of superconducting (SC) generators with three different topologies, i.e. iron-cored stator and rotor, iron-cored stator and air-cored rotor, and air-cored stator and rotor. The analysis is based on three-phase short-circuit fault, and finite element analysis is used for simulation. Following the introduction of specifications of generators, the short-circuit performances of different topologies are analysed and compared, with the field winding excited by voltage and current excitation sources, respectively. It shows that the short-circuit performance can be improved by limiting the field current.

Keywords

• rotors
• stators
• finite element analysis
• superconducting devices
• fault diagnosis
• short-circuit currents
• electric generators
• superconducting generators
• iron-cored stator
• air-cored rotor
• air-cored stator
• short-circuit fault
• finite element analysis
• SC generators
• iron-cored rotor
• three-phase short-circuit fault performance
• topology analysis
• field winding excitation
• current excitation sources
• voltage excitation sources