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http://dx.doi.org/10.3744/SNAK.2007.44.3.238

Suppression of the Thrust Loss for the Maximum Thrust Operation in the Electric Propulsion Ship  

Kim, So-Yeon (Naval Academy)
Youn, Young-Doo (Seoul National University, School of Electrical Engineering & Computer Science)
Sul, Seung-Ki (Seoul National University, School of Electrical Engineering & Computer Science)
Publication Information
Journal of the Society of Naval Architects of Korea / v.44, no.3, 2007 , pp. 238-247 More about this Journal
Abstract
This paper presents the thrust loss suppression algorithm in the electric propulsion ship. The thrust loss due to cavitation can be regarded as the disturbance torque. The disturbance torque is estimated by means of the disturbance observer. Considering the estimated disturbance torque, the speed reference of the propeller is modified to suppress the thrust loss. The experimental results which performed in the cavitation tunnel with electric machine operating system and its controller will be shown to verify the proposed algorithm.
Keywords
Electric propulsion system; Cavitation; Thrust loss; Maximum thrust; Disturbance observer;
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