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The attached figures are related to step change in reference. Let say with the generator at no-load step change the reference value from 95 to 105% of the rated one. In this case also the 80% is not huge; it means step from 95 to 105% => 10% step and 80% overhoot =>8% ; final result is the...

The typical values of the discharge resitors are 3 to 5 times the rotor resistance. On this type of the generator i expect to found the rotor resistance somewhere between 0.5 and 1 Ohm, so the "good" value for the R202 discharge resistor could be 3-4 Omhs. Tricky thing is to determinethe power...

Coefficient of inertia The inertia constant H (in s) - is the ratio of energy stored in the rotor at nominal speed (E in Joules) over the nominal power (P in W) of the machine. So: E= J*w^2/2 and H=E/P where w=2*pi*rpm/60 (314 for 3000rpm, 157 for 1500rpm and so on..) J=...

What was used to calculate/estimate H. J or WK2? The ratio between J and WK2 is 4.

Main problem with the generators on common shaft is related to the MW sharing between them (load angle!!). Be sure that the generators are equal electrically and mechanically. Couple them taking care on position and polarity of the rotor poles. If there are no so big angular differences, the...

To deliver the VAR's to the network you should have the generator voltage(Vg) higher than the system one (Vs). Vice versa, to absorb the VAR's the gen. voltage shall be lower. Assuming that the unit transformer ratio is 1:1 , the delivered VAR's are app: VAR = ( Vg - Vg*Vs)/ Xe Where Xe =...

Agree with alehaman. The pure phase control or chopping at 29kW/240V could produce very funny effects in all other consumers connected to the same supply branch. Surely there shall be one or more ( 3?) triacs or SCR's , but the control strategy may be different. If the heaters are rated ( 16 +...

Looks as a phase control unit (triac or antiparallel SCR's). All of the heaters are connected with one lead to the same phase terminal. Other lead of the heaters may be connected together inside the box and then to the phase control element. The wire connected to the phase lead may be needed...