POWER May 2015 - 13

4. Giant leap. A test conducted by Japanese
firm Mitsubishi Heavy Industries (MHI),
with the backing of the Japanese government,
has confirmed the viability of long-distance
wireless power transmission via microwave.
This image shows the receiver, with LEDs
that lit up when it received power wirelessly
from a transmitting unit 500 meters away.
Courtesy: MHI
ogy's progress. MHI carried out the test
at the MHI's Kobe Shipyard & Machinery
Works based on an agreement with JSS.
It entailed beaming 10 kW of power from
a transmitting unit to a receiver unit
equipped with LED lights about 500 meters
away (Figure 4).
While the test set a new record with
respect to length and volume of the wireless
power transmission, it also confirmed
the performance of the advanced control
system technology used to regulate the
direction of the microwave beam so that
it does not veer from the targeted receiver
unit, MHI said. The company now
says it will " pursue expanded practical
applications " of the advanced aerospace
technology to further the realization of
future SSPSs.
MHI isn't the only entity determined
to put into practice a concept first proposed
100 years ago, when Nikola Tesla
experimented with wireless power transmission.
Experts point out that there are
several ideas applying to wireless energy
transfer and conversion that are currently
being presented and published. Along
with long-distance microwave power
transmission, concepts being explored
involve wireless energy harvesting and
near-field magnetic coupling.
Of course, several challenges plague
the development and implementation of
the concepts, notwithstanding high costs.
Some experts forecast, however, that current
work being carried out in the U.S.
by NASA and in Japan could boost initial
commercial power delivery within the next
20 years. However, that would require
research and development dollars from
various governments to bring enabling
technologies to maturity and a near-term
involvement by users, including utilities
and generators.
-Sonal Patel, associate editor
The Eiffel Tower Now
Houses Wind Power
Generation
When it was erected in 1889 (seven years
after POWER magazine was founded), the
iconic iron-lattice Eiffel Tower was meant
to serve as the entrance arch of the World's
Fair-and designed to stand only 20 years,
about the lifetime of a wind tower. Some
126 years and several renovations later,
the Paris landmark has evolved another
Wow, have things changed!
And not just the length of our hair.
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Mark Jones (right)-
Plant Manager
Greg Leininger (left)-
Inside Sales Manager
New company name. New products.
Same mission in Urbana, Indiana.
www.abresist.com
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POWER May 2015

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