期刊名称：International Journal of Marine Engineering Innovation and Research
印刷版ISSN：2541-5972
电子版ISSN：2548-1479
出版年度：2019
卷号：4
期号：2
页码：87-95
DOI：10.12962/j25481479.v4i2.4132
语种：English
出版社：Institut Teknologi Sepuluh Nopember
摘要：ship with dynamic positioning system have the ability to maintain her position dynamically. To be able to maintain the position,generally ship with dynamic positioning system have several thruster located at bow or stern of the ship. Based on the propulsion system,there are 2 types of thruster which is mechanical thruster and electrical thruster. In electrical type,thruster is driven by an electric motor supplied from the generator. In addition,on dynamic positioning vessel equipped with electrical thruster,there are also VFD or Variable Frequency Drive to control the speed of motor thruster. The use of VFD components in the system may cause harmonic interference. Harmonic itself can be regarded as distortion in the sinusoidal waves due to the interference of other waves that have integer frequency multiples of their fundamental frequency due to the operation of non-linear thruster motor. Some of the most affected components of this distortion are the communications equipment and the components used for measurement. This research conducted an analysis of harmonic disturbance arising from the operation of 2 units bow thruster on DP Ship by simulating 6 scenario of generator configuration using simulation software. The results from this research were total harmonic distortion value or VTHD of the system that comply with standards and rules,also specification of passive harmonic filter to reduce the VTHD value at the specific harmonic order.
关键词：dynamic positioning;generator configuration;harmonic distortion;total harmonic distortion value;variable frequency drive
