Energy Impact of Electric Machinery and Driven Equipment Measured through Electrical Signature Analysis for Program Sustainability

Howard Penrose Ph.D, President, MotorDoc® LLC


In this presentation we will discuss how defects are identified and how the energy costs associated with those losses can be calculated with electrical signature analysis.  One of the primary concerns associated with failing condition-based and predictive maintenance programs is calculated ‘cost avoidance’ which cannot be attributed to the business or a budget line.  There are a number of measurements that have a direct tie to corporate finances including energy.  We will cite several examples of electric motor and driven equipment defects, and describe the process, in which energy cost impacts can be measured and calculated using Electrical Signature Analysis.  A simple case study with a loose belt and a more complex system will be presented as examples.  In general, the numbers associated with the losses are conservative.


Howard W Penrose, Ph.D., CMRP is the President of MotorDoc® LLC and the 2018 Chair of SMRP.  He has over 35 years of electric motor testing, repair and design experience starting with a US Navy motor repair journeymanship to advanced electric machinery design.  Dr. Penrose and the MotorDoc team perform practical research, development and performance analysis on electric motors, generators, testing methods, forensics and repair.  He is a 5-time UAW-GM People Make Quality Happen Award winner (2005-2009), Axiom and Forward book of the year award winner, and a Certified Maintenance and Reliability Professional (CMRP).  Within SMRP he started the Government Relations program with a focus on Smart Grid and Cybersecurity for IoT, as well as overseeing future workforce, safety and infrastructure working groups.  He is a past adjunct professor of industrial engineering at UIC and the utility/industrial senior research engineer for the University of Illinois’ Energy Resources Center.  Dr. Penrose is also the past Web Editor-in-Chief of the IEEE Dielectric and Electrical Insulation Society and is the present Webmaster for the IEEE PES Materials Standards Subcommittee, which oversees electric machine testing standards, including sitting on most of the standards committees.   Several of his machine design achievements include the 2000F environment motor, vacuum environment motor insulation systems, the blood-cooled LEV-VAD heart pump (support), the Hybrid Tahoe and Volt design team insulation system consultant, and the John Deere 644 and 944 hybrid construction loaders insulation and motor design consultant and on-going factory trainer.  In his spare time he is a 6-time Team USA WPC/AWPC world powerlifting champion and the managing partner of 2XL Powerlifting LLC, the largest USA powerlifting gym, and a WPC World judge.