rockman7892
Electrical
- Apr 7, 2008
- 1,168
I've been looking at several wind projects that use Type 3 (DFIG) and Type 4 (Inverter) generator types. From what I've read both of these types of generators have limited fault current contribution capabilities due to the presence of the inverters.
I've been familiar with limited fault current contribution on inverters and thus makes sense for the Type 4 gens but curious about how fault current is limited on the DGIG type gens. Since the stator is still directly connected to the system doesn't that allow fault contribution similar to a typical sync gen?
re
Perhaps what I'm missing is the role that the rotor plays in fault contribution in a typical sync gen and therefor has an impact on reducing contribution from a DFIG due to inverter control with rotor?
Appreciate any insight to help my understanding.
I've been familiar with limited fault current contribution on inverters and thus makes sense for the Type 4 gens but curious about how fault current is limited on the DGIG type gens. Since the stator is still directly connected to the system doesn't that allow fault contribution similar to a typical sync gen?
re
Perhaps what I'm missing is the role that the rotor plays in fault contribution in a typical sync gen and therefor has an impact on reducing contribution from a DFIG due to inverter control with rotor?
Appreciate any insight to help my understanding.