Meanwhile, a stator slot wedge 70 is arranged in the non ferromagnetic material slot 90 opening to fix the stator coil 60, air gap is provided between the stator core 40 and the stator core 10.
The special microcomputer software for calculation of slot electric field is worked out with fe method, and the field distribution in stator slot winding of large generator is calculated.
The fundamental stator slot leakage reactance and 3-order harmonic stator slot leakage reactance are derived by means of slot specific permeance expressions.