Degree:
Master of Science in Electrical and Computer Engineering
Committee Members:
Dr. David Wallce, Dr. Yong Fu, and Dr. Masoud Karimi
Abstract:
When power electronics fail in industrial settings, many variables can contribute to the failures. Subsequent years following initial commissioning, configurations can change, environments can be less ideal than designed, and maintenance schedules may not be consistent with manufacturer’s intent. After many failures over 5 years of a regenerative rectifier on a 325-ton crane system variable frequency drive (VFD), troubleshooting began with the incoming power and systematically following the potential failure points until causes were eliminated. This study investigates the root-cause-analysis of repeated failures of the VFD system through electrical testing based on NETA and IEEE standards, accompanied with a power quality study based on the IEEE 519-2019 and simulation using SKM power modeling software.
