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http://dx.doi.org/10.7837/kosomes.2011.17.1.083

Harmonic Analysis of Power Conversion System for Torque and Speed Changing of Electric Propulsion Ship  

Kim, Jong-Su (Division of Marine System Engineering, Korea Maritime University)
Kim, Seong-Hwan (Division of Marine System Engineering, Korea Maritime University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.17, no.1, 2011 , pp. 83-88 More about this Journal
Abstract
There are various environmental conditions under which ship may navigate over ocean or in harbor. Ship's torque and speed change frequently under the voyage conditions. In this case, harmonics is created in the electrical power systems. The major adverse impacts of voltage and current harmonics in the electrical power systems on generator, transformer, converter, inverter and propulsion motor lead to the increase of machine heating caused by iron and copper losses which are dependent on frequency. In this paper, an analysis of THD(total harmonic distortion) for currents and voltages in the propulsion equipment was carried out. The THD and torque ripple in the input currents of the propulsion motor have been confirmed by the simulation results.
Keywords
Harmonic; Electrical power systems; Machine heating; THD(Total Harmonic Distortion); Iron and copper losses;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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