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Energy Newsbriefs Blog

This current awareness service is prepared by the WSU Energy Program Library with funding from the U.S. Department of Energy State Energy Program. This information is provided for energy professionals and interested members of the public to highlight recent energy-related news, articles, and reports that discuss energy efficiency, energy conservation, and renewable sources of energy in engineering and policy circles.

 

Category: Motors/Drives

Motors/Drives


Dealing With Motor Failures: Common Causes and Solutions

Maintenance Technology, Aug. 2014, by Thomas H. Bishop.
http://www.maintenancetechnology.com/2014/08/dealing-motor-failures-common-causes-solutions/

"If you want to make a plant manager’s day, just say: “Production’s down because a motor failed.” Fortunately, such situations can usually be overcome with some relatively simple techniques and straightforward solutions to protect the bearings and stator windings. These two vulnerable components are root causes of the vast majority of motor failures."

Evaluating Power-Demand Reduction With VFD-Controlled Systems

Heating, Piping, Air Conditioning, Aug. 2014, by Alexander L. Burd and Galina S. Burd.
http://hpac.com/motors-drives/evaluating-power-demand-reduction-vfd-controlled-systems

Discusses the "the impact of relative dynamic-pressure losses and other factors on overall power demand and energy savings."

Streamlined Motor Management System Boosts Biomass Power Generation [Paper Mill]

Pumps & Systems, Aug. 2014, by Matthias Borutta.
http://www.pump-zone.com/motors/august-2014-streamlined-motor-management-system-boosts-biomass-power-generation

"Trusted gateway connections allow for system growth, efficiency and consistent maintenance at Swedish paper mill.

Paper production requires large amounts of power. The Smurfit Kappa plant in Piteå, Sweden, uses its own biomass boilers to meet part of its energy needs. The cleaning system in place for the high-performance steam generator includes a specialized motor management solution to ensure uninterrupted motor operation."

Evaluating Power-Demand Reduction With VFD-Controlled Systems

Heating/Piping/Air Conditioning, July 2014, by Alexander L. Burd and Galina S. Burd.
http://hpac.com/motors-drives/evaluating-power-demand-reduction-vfd-controlled-systems

"This article considers the impact of relative dynamic pressure losses and other factors on overall power demand and energy savings in various systems."

Determine Total Cost of Ownership When Selecting Medium-Voltage Drives (Part 2)

Pumps & Systems, Jun. 2014, by Mark W. Harshman.
http://www.pump-zone.com/motors/june-2014-determine-total-cost-ownership-when-selecting-medium-voltage-drives

"Part One of this two-part series (Pumps & Systems, May 2014) explained how factors other than initial purchase price work together to generate the total cost of ownership (TCO) for medium-voltage variable frequency drives (VFDs). Part Two discusses what creates high reliability in a medium-voltage VFD."

The Next Generation of U.S. Energy Efficiency Motor Regulations

Pumps & Systems, Jun. 2014, by John Malinowski.
http://www.pump-zone.com/motors/june-2014-next-generation-us-energy-efficiency-motor-regulations

"Several years ago, the U.S. Department of Energy (DOE) conducted a technical study about how to raise “small” motors’ efficiency levels. After years of study, the Small Motor Rule was passed, covering General Purpose two-digit NEMA frame (and IEC equivalents), single- and three-phase, 1/4- through 3-horsepower motors in open enclosures. Totally enclosed, fan-cooled (TEFC) motors are not included. This regulation will take effect on April 9, 2015."

Grounding Rings Rescue Paper Mill’s Bearings

Maintenance Technology, May 2014.
http://www.maintenancetechnology.com/2014/05/grounding-rings-rescue-paper-mills-bearings/

"At a paper mill in the Midwest, every new motor that is to be controlled by a variable frequency drive (VFD) must be tested. If shaft voltages are found, the motor must be equipped with an AEGIS® Bearing Protection Ring to divert damaging currents to ground. The plant’s electrical reliability engineer established this money-saving specification after many years of frustration from recurring bearing failures."

Industrial Drive Provides Savings for Swedish Paper Mill

Pumps & Systems, Jun. 2014, by Ken Graber.
http://www.pump-zone.com/centrifugal-pumps/june-2014-industrial-drive-provides-savings-swedish-paper-mill

"The pumping operation experienced an 80-percent reduction in energy use."

Motor Selection in HVAC Design

Engineered Systems, Mar. 2014, by Gary Hamilton.
http://digital.bnpmedia.com/publication/?i=198332&p=40

"Who actually specified that motor? Did they keep the entire system in mind or were they simply specifying one component at a time? And will that spec require over-speeding the motor? Answers to the first two questions frequently aren’t what they should be these days, and the fallout from over-speeding isn’t so great, either. We can do better."

Trends in Industrial Motors and Drives

Design News, Feb. 2014, by Al Presher.
http://www.designnews.com/document.asp?doc_id=271193&itc=dn_features_element&

"New motor and drive systems are continuing to focus on several main design goals: more intelligent performance, higher energy efficiency, and flexible integration options. The result is macro trends that are putting increased focus on support for a broader set of motor types, advanced cooling options, and built-in safety features, along with tighter integration of motor-drive solutions and decentralized control."
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