Concepts in Reliability Keeping it Simple and Random Thoughts

As I just mentioned to a friend – I seem to be waxing philosophical this past weekend as I complete reading “Wizard: The Life and Times of Nikola Tesla, Biography of a Genius,” by Marc J Seifer. I would not have tripped over this and several other excellent texts had I not started returning to…

TheRamReview.com Machine Learning Article Part III Addendum – the code

For trying out the method described Mathworks (https://mathworks.com) provides 30 day trials of their personal and business versions of the Matlab and Simulink systems.  The *.csv files created for this article series were developed within Matlab (Figure 2) using the code which follows. *Note: The code in this article is for demonstration purposes only and…

Evaluating Missing Wedges and Coil Movement with ESA IEEE Paper

Two significant issues in wind power asynchronous generators are magnetic wedge loss and coil movement resulting in winding faults.  Most of the time the failures occur unexpectedly or require borescope or visual inspections of the generator stators.  In this paper we will identify how both conditions can be detected during operation through Electrical Signature Analysis. …

UIC ERC Industrial Assessments Project 1999 Paper

Through proper application of simulation and modeling within industrial environments, greater impact for energy, waste and production improvements can occur. Modern simulation and modeling systems can help determine impacts of energy and waste reduction concepts on production and vice-versa. Through a 1999 Illinois Department of Commerce and Community Affairs funded project, improvements of over 40%…

Troubleshooting a VFD Fault Instantaneous Trip Including Bypass

A new inline ventilation motor operating on a VFD with bypass tripped on startup with the VFD and instantaneously tripped when tested across the line. Smoke was noted in the drive cabinet and MotorDoc was contacted to evaluate the electric motor and work with the VFD installer following recommendations by repair shops to remove the…

Time to Failure Estimation with ESA Series Part 1 Electric Motor Theory

As we start into ESA theories and application, we will have to spend a little time on electric motor theory.  As we will start out with a basic system, AC motors are the simplest in terms of operation and components, we will start out with AC induction motors.  Using this base knowledge, we can later…