Systems and methods for controlling torsional oscillation in wound field synchronous generator machines

摘要

A method for controlling torsional oscillation includes detecting angular position of a wound field synchronous generator machine, extracting information indicative of torsional oscillation, selecting synchronous torsional oscillations, compensating for the synchronous torsional oscillations with an exciter signal, and controlling field current in the wound field synchronous generator using the exciter signal. A damping controller includes a damping module with a synchronous selective compensator and a synchronous notch filter for generating torsional oscillation compensation signals for asynchronous torsional oscillation.

主权项

1. A damping controller comprising:
a damping module for damping torsional oscillation in a wound field synchronous generator machine, wherein the damping module has a synchronous selective compensator for generating a synchronous torsional oscillation compensation signal, a synchronous notch filter for selecting an asynchronous torsional oscillation compensation signal, and an adder module operatively coupled to the synchronous selective compensator and the synchronous notch filter for combining the synchronous torsional oscillation compensation signal and the asynchronous torsional compensation signal, wherein the synchronous notch filter comprises: a constant multiplier module coupled to a position sensor; a speed estimator module coupled to the position sensor; a high-pass filter module coupled to the speed estimator module; a first low-pass filter module coupled to the high-pass filter module; a second low-pass filter module coupled to the high-pass filter module; and an adder module coupled to the first and second low-pass filter modules for generating an output signal for compensating asynchronous torsional oscillations in the wound field synchronous generator machine.