Toroidal Winding Geometry for High Voltage Superconducting Alternators

A modification of the Gramme-Ring armature winding is proposed-for possible use in high voltage alternators. The geometry of a toroidal winding permits good management of both eectric and magnetic fields within a machine. Design formulae for a superconducting alternator with atoroidally wound armature are presented, and a comparison is made between an armature designed on this principle and an existing armature for the MIT-EEI superconducting alternator.