The goal of this research is the enhancement of avionic diagnostic and protection systems against load-fault-induced torsional resonances between on-board alternators and the driving turbines. Intermittent arc faults spreading over worn brushed slip rings supplying AC rotating loads (i.e. propeller anti-ice systems) may endanger the overall electrical service continuity by exciting mechanical resonances and ever-growing torque and speed ripples. Such phenomena are possible causes of breakage of the coupling joint ('mechanical fuse') between turbine and generator, as documented in a companion paper. Two online monitoring techniques for the early-detection of torsional resonances by sensorless speed and torque estimation are proposed to prevent this potential issue on aircrafts in flight.
Monitoring of load-fault-induced torsional resonances in high-speed alternators by speed and torque estimation / Fedele, A.; Bruzzese, C.; Santini, E.; Anastasio, V.. - (2019), pp. 3679-3684. (Intervento presentato al convegno 45th Annual conference of the IEEE industrial electronics society, IECON 2019 tenutosi a Lisbon; Portugal) [10.1109/IECON.2019.8927588].
Monitoring of load-fault-induced torsional resonances in high-speed alternators by speed and torque estimation
Fedele A.;Bruzzese C.
;Santini E.;
2019
Abstract
The goal of this research is the enhancement of avionic diagnostic and protection systems against load-fault-induced torsional resonances between on-board alternators and the driving turbines. Intermittent arc faults spreading over worn brushed slip rings supplying AC rotating loads (i.e. propeller anti-ice systems) may endanger the overall electrical service continuity by exciting mechanical resonances and ever-growing torque and speed ripples. Such phenomena are possible causes of breakage of the coupling joint ('mechanical fuse') between turbine and generator, as documented in a companion paper. Two online monitoring techniques for the early-detection of torsional resonances by sensorless speed and torque estimation are proposed to prevent this potential issue on aircrafts in flight.File | Dimensione | Formato | |
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