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Slot ripples in the damper windings of a salient-pole synchronous generator

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3 Author(s)
Matsuki, J. ; Dept. of Electr. Eng., Kyoto Univ., Japan ; Katagi, T. ; Okada, T.

This paper summarizes the results of an experimental and analytical investigation of the slot ripples in the damper windings of a salient-pole synchronous machine under steady state operation. A new method of measuring damper winding currents and voltages directly has been established and used to examine the ripples due to the stator slot openings, which appear in the damper bar currents and voltages, air gap flux density distributions and terminal voltages. By examining the physical relationship between air gap fluxes and damper winding currents and voltages both at no load and on load, slot ripples phenomena have been made clearer than before

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Energy Conversion, IEEE Transactions on  (Volume:9 ,  Issue: 1 )