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Circuit-model simulation of sudden short circuits of 3-&3-phase double-winding AC-DC generators

The simplified mathematical model and corresponding equivalent circuits for simulation of the 3-&3-phase double-winding AC-DC generator (DWADG) are presented. The sudden simultaneous AC and DC short circuit is simulated. The simulation and test results agree quite well, showing the validity of the mathematical model and the method of simulation. The approach proposed is suitable for other DWADG such as 3-&6-phase, 3-&9-phase 3-&12-phase DWADG, etc