This paper studies the reaction currents of a synchronous machine (SM) with general rotor eccentricity (RE) and parallel paths in the stator. REs make rise loop currents which can be translated in the complex domain through a Fortescue's space-transformation. Extensive simulations show that mainly 2(p±1)-pole current space vectors are stimulated by REs in 2p-pole SMs, with typical cardioid-shaped patterns. The simulation results were justified by using multi-phase symmetrical components, and theoretical formulas were obtained for fault severity assessment starting from loci amplitudes. Experimental verification was shown in a companion paper, where a Labview virtual instrument detects natural and artificial REs in a 17kVA four-pole generator. © 2011 IEEE.

Study of cardioid-shaped loop current space vector trajectories for rotor eccentricity detection in power synchronous machines / Bruzzese, Claudio. - (2011), pp. 205-212. (Intervento presentato al convegno 8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2011 tenutosi a Bologna nel 5 September 2011 through 8 September 2011) [10.1109/demped.2011.6063625].

Study of cardioid-shaped loop current space vector trajectories for rotor eccentricity detection in power synchronous machines

BRUZZESE, claudio
2011

Abstract

This paper studies the reaction currents of a synchronous machine (SM) with general rotor eccentricity (RE) and parallel paths in the stator. REs make rise loop currents which can be translated in the complex domain through a Fortescue's space-transformation. Extensive simulations show that mainly 2(p±1)-pole current space vectors are stimulated by REs in 2p-pole SMs, with typical cardioid-shaped patterns. The simulation results were justified by using multi-phase symmetrical components, and theoretical formulas were obtained for fault severity assessment starting from loci amplitudes. Experimental verification was shown in a companion paper, where a Labview virtual instrument detects natural and artificial REs in a 17kVA four-pole generator. © 2011 IEEE.
2011
8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2011
on-line diagnosis; rotor eccentricity; space vectors; stator parallel loops; synchronous machine
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
Study of cardioid-shaped loop current space vector trajectories for rotor eccentricity detection in power synchronous machines / Bruzzese, Claudio. - (2011), pp. 205-212. (Intervento presentato al convegno 8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2011 tenutosi a Bologna nel 5 September 2011 through 8 September 2011) [10.1109/demped.2011.6063625].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/323886
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