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http://dx.doi.org/10.5916/jkosme.2008.32.8.1278

A Study on the Performance Analysis for Power Converters of Electric Propulsion Ship  

Kim, Jong-Su (한국해양대학교 선박전자기계공학부)
Oh, Sae-Gin (한국해양대학교)
Kim, Sung-Hwan (한국해양대학교)
Kim, Hyun-Soo (목포해양대학교)
Kim, Deok-Ki (한국해양대학교 대학원)
Yoon, Kyoung-Kuk (한국해양대학교 대학원)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.32, no.8, 2008 , pp. 1278-1284 More about this Journal
Abstract
Electric propulsion motors are operated from a variable frequency drive, which supplies power to motors at a frequency appropriate to the desired speed. The objective of this study was to evaluate power converters for shipboard applications and to recommend converters that meet lower harmonic distortion levels and torque ripples. Two systems were studied in detail : Cyclo-converters and PWM-converters. Cyclo-converters are the obvious choice where size, weight and efficiency are the most critical issues. However they have a disadvantage in power factor and they produce severe torque ripples in the motor which makes them unacceptable without special systems. PWM-converters produces better motor current waveform and eliminates common mode voltage issues at the motor, but suffers a multiple stages of power conversion and the isolating transformer. Results of this case study show that PWM-converters are more advanced and efficient drives for induction motor of electric propulsion ship.
Keywords
Electric propulsion ship; Power converters; Harmonic distortion; Torque ripple; Cycloconverter; PWM-converetr; Induction motor;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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