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…
It does happen, although rarely, in typical industrial environments that an electric machine will die of old age. The reason is that machines are often exposed to contamination issues, other environmental issues, power issues or a combination of events that degrade the insulation slowly or rapidly. There is also a rule of reliability that should…
This is not my normal style of writing or presenting. These are thoughts on leadership within governments during the global pandemic. They reflect my personal views as they stand at this moment. Audio or paper – enjoy.
Based upon increasing concerns surrounding business during the Covid-19 outbreak, please find the MotorDoc LLC commitment to safety in relation to the pandemic. MotorDoc LLC is considered an essential business for field services, maintenance and testing. With the conditions rapidly changing, we outline how we are approaching different conditions.
Free Seminar April 20, 2020 from noon to 1pm CST We will discuss the art of EMPATH data collection and analysis of wind turbine generators, gearbox, main bearings and blades from the voltage and current. We will discuss how the data is collected and the approach to analysis. This will be exclusive for wind companies…
Free Live Seminar for April 17, 2020 from noon to 1pm CST In this presentation we will work step-by-step how to analyze an electric motor, sheaves, belts and fan including related bearings using real field data. The demonstration will be with the EMPATH system but applies to other current and electrical signature analysis. GoToWebinar to…
The full CARES Act text can be found here: https://www.congress.gov/bill/116th-congress/house-bill/748 Pardon the meandering ummms and awws. Read it overnight before presenting.
Kevin Alewine of Shermco and I presented at the American Wind Energy Association Operations and Maintenance Conference (AWEA O&M). The EMPATH data on just under 400 generators and powertrain resulted in 772 findings on a specific manufacturer’s generators. The general industry findings for these generators are: The findings from the EMPATH evaluations: The generator findings…
Abstract— Electrical Signature Analysis is the application and analysis of Voltage and Current data collected on electrical machinery systems. The measurements are converted to amplitude modulated Fast Fourier Transforms that can be evaluated for power, machine and powertrain conditions. Electrical and mechanical conditions are determined through their effects on the airgap magnetic field. One of…
Note: A copy of the Nowlan and Heap is included at the end of this post. The purpose of RCM is to provice a process to develop the right maintenance at the right time for the right reasons. The origination of RCM was the December, 1978 document and report developed by United Airlines under the…
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