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Motors and drives
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Switching To Efficient Motors Makes Economic Sense
Motors are ubiquitous, but unseen, in every type of commercial building. A new government study estimates that U.S. commercial buildings use at least 123 million motors to operate HVAC and refrigeration equipment, while several hundred million smaller motors are used in miscellaneous applications. Commercial-building motors consumed about 3.9 quadrillion Btu (quads) of primary energy in 1995-a significant chunk of total commercial electricity energy usage (10.5 quads). Societal trends of increased productivity, convenience, comfort, and ...
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Brushless PM motors: 'big' on power, efficiency; Large permanent magnet (PM) ac motors are becoming more visible in demanding industrial and defense applications, albeit limited in numbers by market forces rather than technology. High power density and efficiency are main attractions.(LARGE SERVOS)
; ...applications, brushless permanent magnet (PM) motors can be made in virtually any size, with...technological constraints. Large brushless PM motors are not particularly new. They're available...ILLUSTRATION OMITTED] Large brushless PM motors offer numerous benefits, among them high...
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Mature industry continues to roll out tech advances.(Motors)
; Although motors have been around since the 1830s, there are still...provides ranges from 901,700 rpms. It will work with motors from one watt to 90 watts. In addition: One problem with most motors is that, when you stop them, there is overrun...
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Rein in costs by increasing product standardization. (Electric Motors).
; Nineteen 100 horsepower motors made by ten different manufacturers. Ten spare motors, of which only four could replace the nineteen...creates a long-term plan to standardize its integral motors. As Anderson sees it, standardization is a key...
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Conserving with premium-efficiency motors.(energy and operational cost savings)
; The application of premium-efficiency motors can provide significant energy savings over standard units even when using small motors. Contractors can profit by helping customers...improved-efficiency, three-phase induction motors has not been as readily accepted. There...
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Energy-efficient motors deliver savings: initial cost can blur much higher product lifecycle cost. Industrial electric motors represent a classic example, since 97-98% of their lifetime operating cost is attributed to electric energy charges. Yet motors are not typically purchased with efficiency in mind.
; ...simplest terms, energy-efficient electric motors are high-quality versions of standard...electricity charges taking nearly all of many motors' lifetime operating cost. [ILLUSTRATION OMITTED] The purchasing process for electric motors tends to mask true lifecycle cost. Since...
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Higher metals' tags nudge motors costs.(industry sales information)(Brief Article)(Statistical Data Included)
; Orders for motors and drives are escalating slightly after...is just beginning to recover. Supply of motors is adequate, and drives are available...Dick Schul, group vice president, Emerson Motors, St. Louis, Mo., says that several markets...
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Miniature motors deliver big performance.(dc brushless motor)
; ...CA-A new line of miniature dc brushless motors--reportedly the world's smallest--offers...applications at a micro scale. The tiniest of the motors, about the size of a fly, weighs 350 mgm...requirements are appropriately Lilliputian. The motors will run on 2 to 9 Vdc at currents from...
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Considerations in specifying large-frame motors. (Electrical).
; Most small motors are built to common dimensional and performance...repair costs. Efficiency Since larger motors are often run more hours per year than...who has plenty of experience in larger motors. The cost of downtime and labor to remove...
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Making more efficient use of motors and drives.(Brief Article)
; APPROXIMATELY two thirds of the energy costs in polymer processing are from electric motors. Yet motors are often neglected when considering energy usage. The motors in the main processing equipment such as injection moulders and extruders are obvious...
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The right motor can position your application for success.(includes related articles on step motors and Taking Advantage of Motor Variety)
; To design a product that uses motors for position control, you should understand...Then, you can choose the best motor or motors and begin selection or designing a suitable...selection, you must understand how the motors work and the sorts of jobs for which each...
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