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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


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."

VFD, Motor Strategies for Energy Efficiency

Consulting-Specifying Engineer, Jan./Feb. 2014, by John Yoon, PE, LEED AP.
http://www.csemag.com/single-article/vfd-motor-strategies-for-energy-efficiency/5d507c13fed1f2680da1f419b85cefa6.html

"A variable frequency drive (VFD) often is specified to save money by reducing energy consumption in pumps, fans, compressors, or any other motor loads that may be found in a typical building. These best practices will provide the engineer with information on how to specify a VFD to meet load conditions while achieving efficiency."

VFD Serial Communications: Which Points Should I Use And Why?

ES: Engineered Systems, Jan. 2, 2014, by Michael R. Olson.
http://www.esmagazine.com/articles/96322-vfd-serial-communications-which-points-should-i-use-and-why

"The available LEED credits and most obvious energy-saving possibilities are one thing. The potential for a ripple effect of system-wide savings by deploying VFDs [Variable Frequency Drives] as part of better overall monitoring are another."

Energy Conservation Standards for Electric Motors: Proposed Rulemaking

U.S. Department of Energy, Energy Efficiency and Renewable Energy Office (EERE), Dec. 6, 2013.
http://www.regulations.gov/#!docketDetail;D=EERE-2010-BT-STD-0027

"Consistent with changes made by the Energy Independence and Security Act of 2007 (EISA 2007), DOE is amending its electric motor standards by expanding the scope of the electric motors that would be regulated. Under the Energy Policy and Conservation Act (EPCA), as amended, DOE must publish a final rule determining whether to amend its standards no later than 24 months after the effective date of the previous final rule."

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Archives of the weekly Energy Newsbriefs, from Oct. 2012 – Jan. 6, 2014, may be found on the WSU Energy Library web page.

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