Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/134552
Title: CONDITION MONITORING OF MARINE ELECTRICAL GENERATORS FOR IMPROVED MAINTENANCE LEADING TO INCREASED RELIABILITY AND AVAILABILITY
Authors: NADARAJAN SIVAKUMAR
Keywords: Condition monitoring, synchronous generator, winding fault, alternator, model
Issue Date: 18-Aug-2016
Citation: NADARAJAN SIVAKUMAR (2016-08-18). CONDITION MONITORING OF MARINE ELECTRICAL GENERATORS FOR IMPROVED MAINTENANCE LEADING TO INCREASED RELIABILITY AND AVAILABILITY. ScholarBank@NUS Repository.
Abstract: The stator winding short circuit faults in Brushless Synchronous Generator (BLSG) used for onboard power generation in ships may lead to catastrophic failures and back out. Hence, it is important to develop Condition Monitoring (CM) techniques for the BLSG to improve its reliability and availability by detecting the faults at an early stage. This thesis focuses on developing novel Model-based CM (MBCM) technique to detect and diagnose the stator winding Turn-to-Turn short circuit faults and then compare the performance with the proposed Signal-Based CM (SBCM) and Data-based CM (DBCM) techniques. The proposed three novel CM techniques are experimentally validated in real-time. The validation results confirmed that the proposed techniques reliably detect and diagnose the faults, the MBCM and SBCM techniques provided superior performance accuracy under linear and non-linear loads, respectively. The performance of the DBCM is better than the MBCM and SBCM techniques, however its accuracy dependent on available training data.
URI: http://scholarbank.nus.edu.sg/handle/10635/134552
Appears in Collections:Ph.D Theses (Open)

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