Cooling and Electrical Tests on a 30 KVA Superconducting Synchronous Generator

Abstract

Cooling and electrical tests on a 30 KVA superconducting synchronous generator of the revolving armature type were performed. The method and results of the cooling test, and discussions about it are given in detail. Five electrical tests were carried out to determine the machine constants of a superconducting synchronous generator. These tests were i) open-circuit test, ii) three-phase short-circuit test, iii) three-phase sudden short-circuit test, iv) slip test, and v) extended slip test. From these experimental results, the values of the machine constants, for example the steady and the transient synchronous reactance, were caculated. The V-characteristic of the synchronous motor with no load was obtained by a synchronous condenser test.