Abstract

This chapter contains sections titled: Types of damper windings. Purposes of damper windings. Effect of damper windings on synchronous-machine constants. Effect of damper windings upon stability. Damper action explained by induction-motor theory. Negative-sequence impedance Calculation of damping. Calculation of negative-sequence braking. Calculation of d-c. braking. Calculation of positive-sequence damping. Power-angle curve with damping included. Heating effect of rotor currents. References Problems on Chapter XIV

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