The vibration control of rotors for gas or steam turbines is usually performed using passive dampers when hydrodynamic bearings are not used. In layouts where the rotating parts are supported by rolling bearings, the damping is usually provided by squeeze film dampers. Their passive nature and the variability of their performances with temperature and frequency represent the main disadvantages. Dampers with magnetorheological and electrorheological fluid allow solving only a part of the abovementioned drawbacks. Active magnetic bearings (AMBs) are promising since they are very effective in controlling the vibration of the rotor and offering the possibility of monitoring the rotor’s behavior using their displacement sensors. However they show serious drawbacks related to their stiffness. Electromagnetic dampers seem to be a valid alternative to visco-elastic, hydraulic dampers due to, among the others, the absence of all fatigue and tribology issues resulting from the absence of contact, the small sensitivity to the working environment, the wide possibility of tuning even during operation, the predictability of the behavior, the smaller mass compared with AMBs, and the failsafe capability. The aim of the present paper is to describe a design methodology adopted to develop electromagnetic dampers to be installed in aero-engines. The procedure has been validated using a reduced scale laboratory test rig. The same approach has then been adopted to design the electromagnetic dampers for real civil aircraft engines. The results in terms of achievable vibration reductions, mass, and overall dimensions are hence presented. A trade-off between the various proposed solutions has been carried out evaluating quantitative performance parameters together with qualitative aspects that this “more electric” technology implies.
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e-mail: andrea.tonoli@polito.it
e-mail: nicola.amati@polito.it
e-mail: angelo.bonfitto@polito.it
e-mail: mario.silvagni@polito.it
e-mail: bernard.staples@rolls-royce.com
e-mail: evgueni.karpenko@rolls-royce.com
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November 2010
Research Papers
Design of Electromagnetic Dampers for Aero-Engine Applications
Andrea Tonoli,
Andrea Tonoli
Department of Mechanics, Mechatronics Laboratory,
e-mail: andrea.tonoli@polito.it
Politecnico di Torino
, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
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Nicola Amati,
Nicola Amati
Department of Mechanics, Mechatronics Laboratory,
e-mail: nicola.amati@polito.it
Politecnico di Torino
, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
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Angelo Bonfitto,
Angelo Bonfitto
Mechatronics Laboratory,
e-mail: angelo.bonfitto@polito.it
Politecnico di Torino
, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
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Mario Silvagni,
Mario Silvagni
Mechatronics Laboratory,
e-mail: mario.silvagni@polito.it
Politecnico di Torino
, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
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Bernard Staples,
Bernard Staples
Whole Engine Modeling Department,
e-mail: bernard.staples@rolls-royce.com
Rolls-Royce Plc.
, P.O. Box 31, Derby DE24 8BJ, England
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Evgueni Karpenko
Evgueni Karpenko
Whole Engine Modeling Department,
e-mail: evgueni.karpenko@rolls-royce.com
Rolls-Royce Plc.
, P.O. Box 31, Derby DE24 8BJ, England
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Andrea Tonoli
Department of Mechanics, Mechatronics Laboratory,
Politecnico di Torino
, Corso Duca degli Abruzzi 24, I-10129 Torino, Italye-mail: andrea.tonoli@polito.it
Nicola Amati
Department of Mechanics, Mechatronics Laboratory,
Politecnico di Torino
, Corso Duca degli Abruzzi 24, I-10129 Torino, Italye-mail: nicola.amati@polito.it
Angelo Bonfitto
Mechatronics Laboratory,
Politecnico di Torino
, Corso Duca degli Abruzzi 24, I-10129 Torino, Italye-mail: angelo.bonfitto@polito.it
Mario Silvagni
Mechatronics Laboratory,
Politecnico di Torino
, Corso Duca degli Abruzzi 24, I-10129 Torino, Italye-mail: mario.silvagni@polito.it
Bernard Staples
Whole Engine Modeling Department,
Rolls-Royce Plc.
, P.O. Box 31, Derby DE24 8BJ, Englande-mail: bernard.staples@rolls-royce.com
Evgueni Karpenko
Whole Engine Modeling Department,
Rolls-Royce Plc.
, P.O. Box 31, Derby DE24 8BJ, Englande-mail: evgueni.karpenko@rolls-royce.com
J. Eng. Gas Turbines Power. Nov 2010, 132(11): 112501 (11 pages)
Published Online: August 5, 2010
Article history
Received:
March 5, 2009
Revised:
November 23, 2009
Online:
August 5, 2010
Published:
August 5, 2010
Citation
Tonoli, A., Amati, N., Bonfitto, A., Silvagni, M., Staples, B., and Karpenko, E. (August 5, 2010). "Design of Electromagnetic Dampers for Aero-Engine Applications." ASME. J. Eng. Gas Turbines Power. November 2010; 132(11): 112501. https://doi.org/10.1115/1.4000801
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