The steady state stability limits for round rotor and salient pole 3 – phase synchronous generator are attained at the value of power angle δ
1
\(< \frac{\pi }{2}and = \frac{\pi }{2},\;respectively\)
2
\(< \frac{\pi }{2}and < \frac{\pi }{2},\;respectively\)
3
\(= \frac{\pi }{2}and = \frac{\pi }{2},\;respectively\;\)
4
\(= \frac{\pi }{2}and < \frac{\pi }{2},respectively\)