| 摘要 |
Generator 12a comprises a stator 20a, stator coils 22a around a rotor 24a including field coils 26a, and a field current supply 38, to create an EMF to the network at 28a. The output at 28a is monitored by two feedback loops. Prior to the onset of fault conditions the output monitored at 30a is used by the field current control function 32a to control the field current supply 38 in order to maintain the EMF at 28a. When an onset of fault conditions is monitored at 30b, the current limiting function 42 takes over from the field current control function 32a to control the field current supply 38 so that the field current is controlled as to reduce the current supplied at 28a. Also disclosed is a power electronic converter 48 controlled by the input from the field current supply 38. |
