Scientific and Technical Journal

ELECTROTECHNIC AND COMPUTER SYSTEMS

ISSN Print 2221-3937
ISSN Online 2221-3805
ANALYSIS OF ELECTROMAGNETIC COMPATIBILITY OF HIGH-POWER SOFT STARTER WITH VESSEL’S POWER NETWORK IN DYNAMIC MODES
Abstract:
The harmonic distortion caused by a soft starter-fed high voltage induction motor drive is analyzed. The high power induction motor is used to drive a bow thruster of a ship. A comprehensive mathematical model of a real bow thruster electric drive is developed. The model is used to simulate and study the transient and steady-state operation modes of the drive. Simulation results show that in transients, the values of the total harmonic distortion of the line current (THDi) and voltage (THDu) exceed their maximum permissible limits defined by IEEE standards; the major impact on the ship’s power system has the 5th and 11th harmonics, thus enhancing the power quality of such electric drive requires focusing on the mitigation of the mentioned harmonic content.
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References

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