The experience gained by ENEL (previously the Italian Electric Board) on monitoring large induction motors cage condition is reported in this paper. The diagnostic procedure is based on the Motor Current Signature Analysis (MCSA) and in particular on the two sideband current components near the frequency fundamental line that appear in the current power spectrum when a rotor bar/ring breakage occurs. According to the developed procedure, a diagnostic index obtained from these components is stored and its trend as a function of time allows to detect the occurrence of a failure in most cases. This event is clearly shown by the overcoming of a prefixed and triggered threshold. Moreover machines with particular rotor magnetic structure are considered. In this case unexpectedly high sideband components appear even in the presence of healthy cages, and the test procedure was adapted to account for these conditions. © 2000 IEEE.

ENEL's experience with on-line diagnosis of large induction motors cage failures / Bellini, A.; Filippetti, F.; Franceschini, G.; Tassoni, C.; Passaglia, R.; Saottini, M.; Tontini, G.; Giovannini, M.; Rossi, A.. - 1:(2000), pp. 492-498. (Intervento presentato al convegno Conference Record of the IEEE Industry Applications Society Annual Meeting (IAS) tenutosi a na nel 8-12 Oct. 2000) [10.1109/IAS.2000.881155].

ENEL's experience with on-line diagnosis of large induction motors cage failures

Franceschini G.;
2000

Abstract

The experience gained by ENEL (previously the Italian Electric Board) on monitoring large induction motors cage condition is reported in this paper. The diagnostic procedure is based on the Motor Current Signature Analysis (MCSA) and in particular on the two sideband current components near the frequency fundamental line that appear in the current power spectrum when a rotor bar/ring breakage occurs. According to the developed procedure, a diagnostic index obtained from these components is stored and its trend as a function of time allows to detect the occurrence of a failure in most cases. This event is clearly shown by the overcoming of a prefixed and triggered threshold. Moreover machines with particular rotor magnetic structure are considered. In this case unexpectedly high sideband components appear even in the presence of healthy cages, and the test procedure was adapted to account for these conditions. © 2000 IEEE.
2000
Conference Record of the IEEE Industry Applications Society Annual Meeting (IAS)
na
8-12 Oct. 2000
Bellini, A.; Filippetti, F.; Franceschini, G.; Tassoni, C.; Passaglia, R.; Saottini, M.; Tontini, G.; Giovannini, M.; Rossi, A.
ENEL's experience with on-line diagnosis of large induction motors cage failures / Bellini, A.; Filippetti, F.; Franceschini, G.; Tassoni, C.; Passaglia, R.; Saottini, M.; Tontini, G.; Giovannini, M.; Rossi, A.. - 1:(2000), pp. 492-498. (Intervento presentato al convegno Conference Record of the IEEE Industry Applications Society Annual Meeting (IAS) tenutosi a na nel 8-12 Oct. 2000) [10.1109/IAS.2000.881155].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1286834
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