Control system for variable frequency generator
AssigneeLucas Industries Limited
InventorChristopher John Adams
Life of this patent
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Abstract
Disclosed is a control system for a variable frequency generator including a main stator winding for providing a generator output, excited by a main rotor winding, and a main exciter rotor winding for energizing the main rotor winding, excited by a main exciter field winding. The control system includes: a plurality of inputs adapted to receive respective signals corresponding to respective generator operating parameters; an output adapted to drive the main exciter field winding; and a plurality of negative feedback loops between the output and the inputs. Each loop includes a respective stability compensation network operable to process a feedback signal corresponding to one of the generator operating parameters.
Claims16
A control system for a variable frequency generator comprising a main stator winding for providing a generator output, the main stator winding being excited by a main rotor winding, and a main exciter rotor winding for energising the main rotor winding, the main exciter rotor winding being excited by a main exciter field winding, the control system comprising:
- sensing means for receiving the generator output to sense operating parameters of the generator and for providing signals respectively representing an average generator output voltage, a high phase take-over signal corresponding to the highest one of sensed average voltages of the phases of the generator output, and a generator output current signal;
- a plurality of inputs adapted to receive the signals from the sensing means;
- an output adapted to drive the main exciter field winding;
- and
- a plurality of negative feedback loops between the output and the plurality of inputs;
- each loop including a respective stability compensation network operable to process a feedback signal corresponding to one of the operating parameters.
A control system for a variable frequency generator comprising a main stator winding for providing a generator output, the main stator winding being excited by a main rotor winding, and a main exciter rotor winding for energising the main rotor winding, the main exciter rotor winding being excited by a main exciter field winding, the control system comprising:
- an input adapted to receive a signal corresponding to a generator operating parameter;
- an output adapted to drive the main exciter field winding;
- and
- a negative feedback loop between the output and the input, the loop including a stability compensation network operable to process the signal;
- an operating characteristic of the stability compensation network being adaptively controllable in accordance with a present operating frequency of the generator.
Dependencies are inferred from the claim text.