Rotor eddy current loss of nuclear power half speed turbogenerator with inter-turn short circuit of field winding
In order to find out the rotor eddy current loss characteristics behind inter-turn short circuit of field winding in nuclear power half speed turbogenerator,the expression of the synthetic magnetomotive force generated by the fractional harmonic current of the stator during the field winding inter-turn short circuit fault was derived under the no-load operation of a nuclear power half speed turbogenerator.The rotational speed of the synthetic magnetomotive force relative to the rotor and the frequency of the induc-tion of eddy current in the rotor damping strip and the slot wedge were analyzed.And the simulation veri-fication was carried out.On this basis,the same degree of inter-turn short circuit occurs in different posi-tion of field winding of the nuclear power half speed turbogenerator,and different degree short circuit of field winding were simulated.The eddy current and eddy current loss in the damping strips and slot wed-ges of the rotor were calculated.The factors affecting the eddy current and eddy current loss in the rotor damping strip and the slot wedge were revealed in the inter-turn short circuit of the field winding.It pro-vides a theoretical basis for the rotor eddy current loss of the field winding inter-turn short circuit fault.
nuclear power half speed turbogeneratorfield windinginter-turn short circuiteddy current loss
NETL
NSTL
万方数据
维普
