Spiral vector theory of synchronous machine

The spiral vector method was applied to the analysis of the transient phenomena of synchronous machines. Analytical results obtained were compared with test results on sudden three-phase short circuit currents. Good agreement was obtained for the first time.

[1]  Sakae Yamamura.  Spiral vector theory of salient-pole synchronous machine , 1992, Conference Record of the 1992 IEEE Industry Applications Society Annual Meeting.