Affordability, redundancy, as well as space, weight, and energy savings are main issues on board ship. Classical oil-powered onboard actuators used for steering gears (rudders, roll-stabilizing fins) are usually cumbersome, weighty, low-efficiency and costly plants, also requiring an heavy maintenance burden. The Italian Navy recently committed a research project to the University of Rome-Sapienza, aimed to define innovative inverter-fed full-electric actuation systems in alternative to the hydraulics. The new actuators had to guarantee the required dynamic performances, i.e. very high torques/forces at very low speeds, besides high affordability, redundancy, and, mostly, high efficiency. This paper proposes a new high-thrust permanent-magnet linear actuator for direct-drive of steering gears, through an appositely designed rotary-prismatic coupling. Mechanical and electrical drive sizing are shown, and force, speed, and efficiency performances are analyzed and compared with those of the original hydraulic plant. The proposed actuator will be verified by tests on a reduced-scale laboratory prototype in the final steps of the research program.
Direct drive of ship's steering gears through permanent-magnet linear motors featuring high thrust and efficiency / Bruzzese, Claudio. - ELETTRONICO. - (2012), pp. 1-8. (Intervento presentato al convegno IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2012 tenutosi a Bengaluru, India nel December 16-19, 2012) [10.1109/PEDES.2012.6484420].
Direct drive of ship's steering gears through permanent-magnet linear motors featuring high thrust and efficiency
BRUZZESE, claudio
Primo
2012
Abstract
Affordability, redundancy, as well as space, weight, and energy savings are main issues on board ship. Classical oil-powered onboard actuators used for steering gears (rudders, roll-stabilizing fins) are usually cumbersome, weighty, low-efficiency and costly plants, also requiring an heavy maintenance burden. The Italian Navy recently committed a research project to the University of Rome-Sapienza, aimed to define innovative inverter-fed full-electric actuation systems in alternative to the hydraulics. The new actuators had to guarantee the required dynamic performances, i.e. very high torques/forces at very low speeds, besides high affordability, redundancy, and, mostly, high efficiency. This paper proposes a new high-thrust permanent-magnet linear actuator for direct-drive of steering gears, through an appositely designed rotary-prismatic coupling. Mechanical and electrical drive sizing are shown, and force, speed, and efficiency performances are analyzed and compared with those of the original hydraulic plant. The proposed actuator will be verified by tests on a reduced-scale laboratory prototype in the final steps of the research program.File | Dimensione | Formato | |
---|---|---|---|
Bruzzese_Direct_2012.pdf
solo gestori archivio
Tipologia:
Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
1.3 MB
Formato
Adobe PDF
|
1.3 MB | Adobe PDF | Contatta l'autore |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.