Electrical Signature Analysis for Induction Motor Driven Thruster Assemblies
K.W. Kruimer (TU Delft - Mechanical Engineering)
H. Polinder – Mentor (TU Delft - Transport Engineering and Logistics)
Andrea Coraddu – Mentor (TU Delft - Ship Design, Production and Operations)
Maarten Langelaar – Mentor (Allseas Engineering)
D. Boskos – Graduation committee member (TU Delft - Team Dimitris Boskos)
Jianning Dong – Graduation committee member (TU Delft - DC systems, Energy conversion & Storage)
André Veltman – Graduation committee member
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Abstract
This research analyses the potential of Electrical Signature Analysis (ESA) as a means for condition monitoring of mechanical defects of induction motor driven thruster assemblies in the maritime industry. This is done by measuring the three phase current and voltage of three thrusters, with different health conditions, of a marine vessel sailing at different speeds. In this data, the mechanical behaviour of the machines is detected by plotting the frequency spectra of various electrical parameters, such as complex current and torque. After successfully identifying mechanical behaviour and defects, a suggested approach for the implementation of ESA as a means for condition monitoring is presented.