Last Updated: June 20, 2022
Variable Frequency Drive Deterioration
This is the third of five video case studies from the book ‘Enhanced System Reliability Through Vibration Technology’ (ESRTVT) by James Sylvester. In this video James shows how analysing vibration and thermal data can diagnose electrical drive faults on a variable frequency drive.
Introduction: 0:23. Variable Frequency Drive: 1:34. Historical review: 2:21. VFD Defect – Waterfall: 3:31. VFD Defect – Velocity: 3:57. VFD Defect – Thermal: 4:32. Findings – VFD Electrical: 5:07. MIRCE Evaluation: 6:34. Closing: 7:47
James Sylvester is an RMS Trainer at the Reliability Training Institute.
RMS has been a key Mobius Training partner since 2004 and James’ addition to the team will help us in delivery of the growing number of course offerings available. James will support in the delivery of our Accredited training courses conforming with ISO 18436, that offer either MiBoc or BINDT certification options.
James is a time-served engineer with more than 20 years’ experience in the implementation of Condition-Based Maintenance and Reliability-Based Maintenance programs, with practical experience and qualifications make him an ideal candidate for the role as an RMS Trainer.
Starting as an apprentice fitter turner (millwright) and after 10 years in the Mechanical Engineering and Maintenance James made the move into Condition Monitoring and Reliability Engineering. He has spent the last 20 years working with many of the Blue-Chip companies in the UK and Australia.
James is the Author of Enhanced System Reliability Through Vibration Technology and Book of Gold, Practical Condition Monitoring Case Studies.
Part 1: Introduction to Condition Based Maintenance
Chapter 1 – Condition Monitoring
Chapter 2 – Mechanics of Failure
Chapter 3 – Condition Monitoring Technologies
Part 2: Condition Monitoring Management Processes
Chapter 4 – Setting up and Reporting
Chapter 5 – Practical Application
Chapter 6 – ISO Standards
Part 3: Vibration Analysis Condition Monitoring Techniques
Chapter 7 – Vibration Units
Chapter 8 – Accelerometer Selection and Mounting
Chapter 9 – Signal Processing
Chapter 10 – Bearing Condition Units
Chapter 11 – System Dynamics
Chapter 12 – Resonance & Natural Frequencies
Chapter 13 – Operating Deflection Shape Analysis
Chapter 14 – Motion Amplification
Chapter 15 – Modal Analysis Chapter 16 – Orbit Plot
Chapter 17 – Bode Plots
Part 4: Performing Vibration Analysis
Chapter 18 – General Vibration Analysis
Chapter 19 – Rolling Element Bearings
Chapter 20 – Fluid Film Bearings
Chapter 21 – Gears
Chapter 22 – Paper Machines
Chapter 23 – Jaw Crushers
Chapter 24 – Vibrating Screens
Chapter 25 – DC Drives
Chapter 26 – AC Drives
Chapter 27 – Electrical Discharge Machining (EDM)
Chapter 28 – Pumps
Chapter 29 – Compressors
Chapter 30 – Reciprocating Engine Vibration
Chapter 31 – Turbo Machinery Notes
Part 5: Balancing
Chapter 32 – Balancing
Part 6: Appendix
Chapter 33 – Case Studies
How to order a copy
Visit: Enhanced System Reliability
Add to the basket and process through the checkout.
Included as part of the study-material on a public CAT-III Vibration Analysis course.
Related Case Studies
There are 6 case studies in this series:
Case study 1 – Electrical Vibration Problem
Case study 2 – Standby Fan Motor Bearing Defect
Case study 3 – Variable Frequency Drive Deterioration
Case study 4 – Vibrating Screen Gearbox Bearing Defect
Case study 5 – 23RPM Defect on a 4 Point Contact Bearing
Bonus: Case study 6 – Dynamic Vibration Absorber
NEW: see James’s Wireless Vibration Sensor case study and review.