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We're now less than a month away from the December 19th
implementation of new high-efficiency motor standards spelled out in the
Energy Independence and Security Act (EISA) of 2007. EISA builds on the
previous Energy Policy Act of 1992 (EPAct), updating mandated efficiency
standards for general-purpose, three-phase ac industrial motors from 1
to 500 hp that are manufactured for sale in the United States. The U.S.
Department of Energy is responsible for establishing rules to implement
and enforce EPAct. Is your company ready for the changeover to more
efficient motors, lighting, and electronics?
Baldor Electric Company has a white paper concerning the Requirements
of the Energy Independence and Security Act 2007 for motors from 1
to 500 hp that goes into more detail than I can cover here. Check it
out!
And don't forget to check out the World's Smartest Design Engineer
contest still playing at http://smartestdesignengineer.com/.
You could be December's monthly winner!
-- Robert Repas, Associate Editor
In this issue of Motors Monthly:
Get Connected! Come join the discussion on MACHINE DESIGN's Blogs, LinkedIn,
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Office in Second Life.
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The Energy Independence and Security Act (EISA) goes into effect
December 19, 2010, and has far-reaching implications for many
industries. The act has numerous goals and mandates — 300 pages worth
— and includes new laws to increase the efficiency of a wider range of
motors than ever before. The law affects all engineers that specify or
purchase electric motors, as well as those responsible for motor-powered
plant operations.
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Chevy engineers pulled out all the stops when designing the 2011
Volt. They came up with an entirely new powertrain, complete with a
patented battery pack and innovative transmission. They uncovered new
ways to cut weight and reduce drag in an effort to boost range. They
even had new tires designed that add range. And they didn’t ignore
safety along the way. But most importantly, they focused on making a car
— whether you call it a series hybrid or an all-electric vehicle —
that could help much of the population use less gas. In fact, if you
drive less than 40 miles a day, you might never need stop at a gas
station again.
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The standards and regulations for HEV are still being worked out,
but there are already a handful of international and national standards
that apply. They include the Federal Motor Vehicle Safety Standards
(FMVSS) FMVSS 305 standard which applies for vehicles that use more than
48 V for propulsion power. It is enforced by the National Highway
Traffic Safety Administration (NHRSA) of the U. S. Dept. of
Transportation. It’s designed to avoid fatalities and injuries during
a crash caused by electrolyte spillage from propulsion batteries,
intrusion of propulsion battery-system components into the occupant
compartment, and electric shock. The requirement states the isolation
barrier between battery and exposed conductive part should maintain 500
Ω/V before and after the crash impact.
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Hall sensors are magnetic sensors that, when used with dc electric
motors, detect the position of an armature as well as its speed and
direction of rotation. A count of Hall-sensor output-voltage pulses
makes it possible to determine the number of armature rotations or
calculate motor rpm.
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Paul McGrath from Maxon Motor looks at the up and coming trends in
brush and brushless motors.
4:28
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The BX4 Series now offers 12 new 32-mm brushless-dc servomotors.
Features include a high cogging-free output torque and no
adhesive-bonded joints. The motor comes in 42 or 68-mm lengths, with 12
or 24-V windings. The unit provides a continuous output torque of 56 or
97 mNm.
MICROMO
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The high-resolution 19000 Series captive linear actuator is for
motion applications that need a small footprint. The 20-mm-diameter
can-stack has a 7.5° step angle resulting in smaller move increments
and finer positioning ability.
Haydon Kerk Motion Solutions Inc.
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1FN3 peak-load motors have short-time,
high-acceleration/deceleration, and velocity rates comparable to S3 duty
and are for horizontal or compensated vertical axes. The motors feature
8,100-N nominal force, 20,700-N maximum force, and 253 m/min maximum
velocity with liquid cooling. 1FN3 continuous-load motors have long
power-on duration for horizontal, inclined, or compensated vertical
axes. They feature 10,375-N nominal force, 17,610-N maximum force, and
129 m/min maximum velocity with liquid cooling.
Siemens Industry Inc.
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New designs have been added to the Baldor·Reliance Super-E line of
premium efficient motors; 450 Super-E designs are being added across
many ac motor families to expand the range of these NEMA Premium
motors.
Baldor Motors
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ARCHIVED WEBCASTS AVAILABLE FOR FREE VIEWING
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Leeson
With over 30,000 custom designs and experienced application and design
engineering support, LEESON can react quickly to your production &
application needs.
www.leeson.com
Calculate Motor Speed, Torque or Power: The most common units
can be selected to help engineers find the data they need quickly. The
tool is freely available with no registration from Groschopp
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