DocumentCode :
72333
Title :
Medium-Voltage Current-Source Converter Drives for Marine Propulsion System Using a Dual-Winding Synchronous Machine
Author :
Jingya Dai ; Sang Woo Nam ; Pande, Mayank ; Esmaeili, Ghodrat
Author_Institution :
Medium Voltage R&D Dept., Rockwell Autom. Canada, Cambridge, ON, Canada
Volume :
50
Issue :
6
fYear :
2014
fDate :
Nov.-Dec. 2014
Firstpage :
3971
Lastpage :
3976
Abstract :
Medium-voltage (MV) drives are increasingly used in high-power marine applications for running thrusters and main propulsion motors. In this paper, an MV drive solution employing active front-end current-source converters is proposed for a synchronous-motor-based propulsion system. The proposed solution includes two independent drives, each to control one of the two sets of three-phase windings of the synchronous motor. A dedicated communication link between the drives allows continuous load sharing and robust system operation in a master-follower drive configuration. Field-oriented control with the use of an absolute encoder is implemented for providing high starting torque and smooth speed control over a wide speed range including a 30% overspeed region. The major advantages of the proposed solution include simple structure, increased system power rating, redundant operation, low-harmonic input/output waveforms, improved reliability, elimination of a bulky input isolation transformer, and parallel drive control without the need of a complex coordinated inverter gating system. In addition, the system offers input power factor compensation and dynamic braking to allow operation on a generator-based supply system. Field test results obtained on a 14-MW ship propulsion system are provided to demonstrate the system performance.
Keywords :
braking; constant current sources; drives; machine vector control; machine windings; marine propulsion; power convertors; power factor; synchronous motors; torque; velocity control; MV drive solution; absolute encoder; active front-end current-source converters; bulky input isolation transformer elimination; communication link; complex coordinated inverter gating system; continuous load sharing; dual-winding synchronous machine; dynamic braking; field test; field-oriented control; generator-based supply system; high starting torque; high-power marine applications; input power factor compensation; low-harmonic input-output waveforms; main propulsion motors; marine propulsion system; master-follower drive configuration; medium-voltage current-source converter drives; overspeed region; parallel drive control; power 14 MW; power rating; redundant operation; reliability improvement; robust system operation; ship propulsion system; simple structure; smooth speed control; synchronous motor; three-phase windings; thrusters motors; Generators; Harmonic analysis; Inverters; Marine vehicles; Synchronous motors; Torque; Windings; Current-source converter (CSC); electrical drives; marine propulsion; medium voltage; power conversion; synchronous machine;
fLanguage :
English
Journal_Title :
Industry Applications, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-9994
Type :
jour
DOI :
10.1109/TIA.2014.2316361
Filename :
6786332
Link To Document :
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