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#Post#: 9923--------------------------------------------------
Magnetic Gears
DIR By: AGelbert
Date: June 15, 2018, 4:27 pm
---------------------------------------------------------
CleanTechnica
Support CleanTechnica’s work via donations on Patreon or PayPal!
Or just go buy a cool t-shirt, cup, baby outfit, bag, or hoodie.
HTML https://cleantechnica.com/shop/#!/
[center]Magnetic Gears Reduce Cost Of Wind Turbines & Wave
Power[/center]
June 11th, 2018 by Steve Hanley
Transmissions are not sexy but they are essential to many
mechanical devices. They allow components that turn at different
speeds to work together. For instance, the blades of a wind
turbine are not connected directly to the electrical generator
inside. A transmission takes the relatively low rotational speed
of the blades and steps it up to the higher RPMs needed to spin
the generator fast enough to make electricity. Gears are the
secret sauce inside any transmission. They are fairly reliable
but if one breaks, it can be expensive to repair. And if it is
located high on a wind turbine pylon or deep undersea in a wave
power device, getting access to it to make a repair can be
difficult.
[center]
HTML https://c1cleantechnicacom-wpengine.netdna-ssl.com/files/2018/06/Magnetic-Gear-Texas-AM.jpg[/center]
[center]magnetic gears Credit: Texas A&M[/center]
At Texas A&M, doctoral student Matthew Gardner is working on way
to replace mechanical gears with magnetic ones. If he is
successful, smaller, lighter, and less expensive transmissions
that transmit power more efficiently will be the result. His
research is being watched carefully by several companies,
including ABB, the global technology company headquartered in
Switzerland.
Magnetic gears require less maintenance, create less acoustical
noise and vibrations and are more durable than mechanical gears.
If too much power is applied to a conventional gear, it breaks
but when excess power is applied to a magnetic gear, it simply
slips with no mechanical damage. In essence, it acts like a
clutch built into the transmission that can absorb spikes in the
load applied without breaking.
“Magnetic gears drew my interest because they represent a
potentially disruptive innovation in the field of electric
machines,” Gardner says. “Much of the research in electric
machines represents incremental improvements on the technology
that has been developed over the last few hundred years.”
One of the projects Gardner is working on is building a
transmission for a wave energy generator. Ocean waves can have
enormous spikes in energy. The transmission has to be able to
absorb high torque loads over and over again reliably. By
definition, repairing a broken component that is mounted
underwater is a daunting and expensive job. “Our analysis found
that using a magnetically geared generator would be about 50
percent smaller, 50 percent lighter and 25 percent less
expensive than using a generator without any gearing for this
wave energy application,” Gardner says.
In collaboration with the US Department of Energy and ABB, he
has constructed a prototype transmission with magnetic gears
that can handle up to 4000 newton meters of torque. 👀
HTML http://renewablerevolution.createaforum.com/gallery/renewablerevolution/3-311017193926.pngMost<br
/>magnetic gearing solutions to date are limited to about 150
newton meters of torque. Converting to pounds feet — the
measurement of torque most of us are familiar with — 4000 newton
meters is equivalent to 3000 pounds feet — nearly four times
more than a Tesla Model S P100D.
[center]
HTML https://youtu.be/AU8TfuRqBaA[/center]
“I am excited about the opportunity to make a disruptive change
in the field of electric machines,” Gardner said. “Magnetic
gears and magnetically geared machines offer the possibility to
provide a significant, not just incremental, improvement in
systems involving electric machines.” Anything that lowers the
initial costs and ongoing maintenance expense of renewable
energy systems is a welcome step forward on the road to
eliminating carbon and other harmful emissions from fossil
fueled generating plants. Lower renewable costs will also make
nuclear power unprofitable. With magnetic gears, 100% renewable
energy becomes a more realistic possibility.
HTML http://cliparts.co/cliparts/Big/Egq/BigEgqBMT.png
HTML https://cleantechnica.com/2018/06/11/magnetic-gears-reduce-cost-of-wind-turbines-wave-power/
Agelbert COMMENT: I have always loved the magnetic gear concept.
I imagine it has not gained more traction (pun intented
😎) due to the force needed for many applications.
Nevertheless, I can see where a slow rotating giant transmission
can make use of magnetic gears effectively, thereby saving
millions of dollars in lubricant, while prolonging the life of
the transmission itself simply because the "gears" never wear
out.
HTML http://www.createaforum.com/gallery/renewablerevolution/3-080515182559.png<br
/>
I think transmissions on ships could benefit from magnetic gears
as well. The less lubricants, particularly fossil fuel based
lubricants, needed, the better!
[center]
HTML http://renewablerevolution.createaforum.com/gallery/renewablerevolution/3-120118181944.png[/center]]
#Post#: 9926--------------------------------------------------
Re: Magnetic Gears
DIR By: AGelbert
Date: June 16, 2018, 2:19 pm
---------------------------------------------------------
--- Quote from: Eddie link ---
>
> [quote author=agelbert link=topic=559.msg155959#msg155959
date=1528994614]
> [center]2019 Hyundai Ioniq preview[/center]
>
> Aaron Cole
>
> Jun 14, 2018
>
> [center]The 2019 Hyundai Ioniq returns this year as an
inexpensive alternative for green car shoppers on a budget.
😎 [/center]
>
> Its lineup has fully matured now; the Ioniq is available as an
affordable hybrid, a slightly more expensive plug-in hybrid, or
a fully electric model available in limited areas. We say:
green, greener, or greenest—no bad pick.
>
> The most notable change for the Ioniq this year is the
addition of standard automatic emergency braking on the Hybrid
SEL, the bread-and-butter trim level that likely starts at just
more than $25,000 (Hyundai hasn't yet announced pricing for the
2019 models). The SEL trim level includes heated front seats,
16-inch wheels, power-adjustable driver's seat, and LED daytime
lights.
>
> Value-minded buyers can find nearly as many features for less
money, however. Likely starting around $23,000, the base 2019
Hyundai Ioniq Blue is equipped with a 7.0-inch touchscreen with
Android Auto/Apple CarPlay compatibility, cloth upholstery, a
6-speed automatic transmission, 1.56-kwh lithium-ion battery,
and 15-inch wheels. The base Ioniq Blue has the distinction of
being the most fuel-efficient car without a plug on sale in the
U.S. with a 58 mpg combined rating. Other Ioniq Hybrids are
rated at 55 mpg combined due to added weight and different
tires.
>
> At the top of the pile is the Ioniq Limited that swaps in
leather upholstery, a sunroof, 17-inch wheels, and Hyundai's
telematics system for more than $28,000 to start.
>
> A spend-up package is available for SEL and Limited models
that upgrades the touchscreen to an 8.0-inch unit with
navigation, adds premium audio, wireless cellphone charging, and
advanced voice recognition.
>
> Plug-in hybrid and all-electric models are available in base
and Limited trim levels. Plug-in hybrids likely will cost nearly
$26,000 and electric models ring the bell at just over $30,000
before applicable federal and state incentives are factored in.
>
> The Ioniq Plug-in Hybrid swaps out the hybrid's 1.56-kwh
battery for a larger 8.9-kwh battery system that delivers an
EPA-rated 29 miles of electric range before the 1.6-liter
inline-4 internal combustion engine kicks in. It's rated at 52
mpg combined as a hybrid.
>
> The Ioniq Electric is limited in availability—and in other
ways. The electric Ioniq only offers 124 miles of range,
significantly less than the Bolt EV and the upcoming 2019 Nissan
Leaf with a bigger battery. The Ioniq Electric is only available
in Southern California too 👎, and a confusing charging
reimbursement program was dropped for 2018. That may not matter
to seasoned EV owners who are accustomed to off-peak charging or
who are familiar with existing charging infrastructure, but the
Ioniq Electric is hardly appealing to first-time EV buyers with
its limited range and availability.
>
> In any powertrain configuration, the Ioniq's best trait may be
its ability to blend in seamlessly to everyday operation. There
are no "look at me" styling cues to give away the Ioniq's
efficient powertrain, and it's dangerously close to being
completely normal.
>
> That also figures into the Ioniq Hybrid's usability. The cargo
hold is still 23.5 cubic feet (marginally smaller than a Prius)
but its wide opening makes most of that space usable. The
Ioniq's touchscreen and infotainment is still one of our faves,
made better with smartphone compatibility that new buyers might
prefer.
>
> We still think the most likeable part of the Ioniq Hybrid is
its low price and three available powertrain configurations that
is, so far, unmatched by any of its competitors.
HTML http://cliparts.co/cliparts/Big/Egq/BigEgqBMT.png
>
>
> HI-RES GALLERY: 2019 Hyundai Ioniq
HTML https://www.greencarreports.com/pictures/1117217_2019-hyundai-ioniq-preview_gallery-1
>
>
HTML https://www.greencarreports.com/news/1117217_2019-hyundai-ioniq-preview
HTML https://www.greencarreports.com/news/1117217_2019-hyundai-ioniq-preview
>
--- End Quote ---
Thanks for this. I have learned to love my plug-in hybrid. The
Hyundai sounds like a pretty good car.
I lean toward my next car being another Volt. When the eV
battery range gets to about 50 miles, that means most of my
driving is accomplished by grid power, and could be accomplished
with PV power. But the small FF engine makes it possible to
still make road trips when necessary. It's a good combination
for someone who still needs to drive as much as I do. Volts
still go for 35K+ though and when the Trumpites eliminate eV
subsidies, it won't be a cheap car. My out of pocket for my volt
was only 25K, and I got 4 yrs at no interest. Next time it's
gonna cost more, maybe 10K more.
[/quote]
Glad to be of service.
HTML http://www.createaforum.com/gallery/renewablerevolution/3-141113185701.png<br
/>I would love to buy a used Leaf. They are super cheap, but I
can't get my wife to agree to buy one. Hopefully, she'll come
around. For now, we use Vermont Green Cab taxi service.
What do you think of that magnetic gear development at Texas
A&M? I'm REALLY excited about that. The reason is that, if, and
when, magnetic replaces mechanical gearing in most applications,
machine efficiency and durability (MTBF) increases so much that
ALL the math about how much energy we NOW need to run the planet
goes out the window. This is one more huge technological
innovation that can make a 100% Renewable Energy powered world a
reality.
HTML http://us.cdn2.123rf.com/168nwm/lenm/lenm1201/lenm120100200/12107060-illustration-of-a-smiley-giving-a-thumbs-up.jpg<br
/>
#Post#: 9931--------------------------------------------------
Re: Magnetic Gears
DIR By: AGelbert
Date: June 16, 2018, 9:28 pm
---------------------------------------------------------
--- Quote from: David B. link ---
>
> [quote author=agelbert link=topic=559.msg156013#msg156013
date=1529098361]
> CleanTechnica
> Support CleanTechnica’s work via donations on Patreon or
PayPal!
>
> Or just go buy a cool t-shirt, cup, baby outfit, bag, or
hoodie.
HTML https://cleantechnica.com/shop/#!/
>
> [center]Magnetic Gears Reduce Cost Of Wind Turbines & Wave
Power[/center]
>
> June 11th, 2018 by Steve Hanley
>
> Transmissions are not sexy but they are essential to many
mechanical devices. They allow components that turn at different
speeds to work together. For instance, the blades of a wind
turbine are not connected directly to the electrical generator
inside. A transmission takes the relatively low rotational speed
of the blades and steps it up to the higher RPMs needed to spin
the generator fast enough to make electricity. Gears are the
secret sauce inside any transmission. They are fairly reliable
but if one breaks, it can be expensive to repair. And if it is
located high on a wind turbine pylon or deep undersea in a wave
power device, getting access to it to make a repair can be
difficult.
>
>
[center]
HTML https://c1cleantechnicacom-wpengine.netdna-ssl.com/files/2018/06/Magnetic-Gear-Texas-AM.jpg[/center]
> [center]magnetic gears Credit: Texas A&M[/center]
>
> At Texas A&M, doctoral student Matthew Gardner is working on
way to replace mechanical gears with magnetic ones. If he is
successful, smaller, lighter, and less expensive transmissions
that transmit power more efficiently will be the result. His
research is being watched carefully by several companies,
including ABB, the global technology company headquartered in
Switzerland.
>
> Magnetic gears require less maintenance, create less
acoustical noise and vibrations and are more durable than
mechanical gears. If too much power is applied to a conventional
gear, it breaks but when excess power is applied to a magnetic
gear, it simply slips with no mechanical damage. In essence, it
acts like a clutch built into the transmission that can absorb
spikes in the load applied without breaking.
>
> “Magnetic gears drew my interest because they represent a
potentially disruptive innovation in the field of electric
machines,” Gardner says. “Much of the research in electric
machines represents incremental improvements on the technology
that has been developed over the last few hundred years.”
>
> One of the projects Gardner is working on is building a
transmission for a wave energy generator. Ocean waves can have
enormous spikes in energy. The transmission has to be able to
absorb high torque loads over and over again reliably. By
definition, repairing a broken component that is mounted
underwater is a daunting and expensive job. “Our analysis found
that using a magnetically geared generator would be about 50
percent smaller, 50 percent lighter and 25 percent less
expensive than using a generator without any gearing for this
wave energy application,” Gardner says.
>
> In collaboration with the US Department of Energy and ABB, he
has constructed a prototype transmission with magnetic gears
that can handle up to 4000 newton meters of torque. 👀
HTML http://renewablerevolution.createaforum.com/gallery/renewablerevolution/3-311017193926.pngMost<br
/>magnetic gearing solutions to date are limited to about 150
newton meters of torque. Converting to pounds feet — the
measurement of torque most of us are familiar with — 4000 newton
meters is equivalent to 3000 pounds feet — nearly four times
more than a Tesla Model S P100D.
>
>
[center][embed=640,380]
HTML http://www.youtube.com/watch?v=AU8TfuRqBaA[/embed][/center]
>
> “I am excited about the opportunity to make a disruptive
change in the field of electric machines,” Gardner said.
“Magnetic gears and magnetically geared machines offer the
possibility to provide a significant, not just incremental,
improvement in systems involving electric machines.” Anything
that lowers the initial costs and ongoing maintenance expense of
renewable energy systems is a welcome step forward on the road
to eliminating carbon and other harmful emissions from fossil
fueled generating plants. Lower renewable costs will also make
nuclear power unprofitable. With magnetic gears, 100% renewable
energy becomes a more realistic possibility.
HTML http://cliparts.co/cliparts/Big/Egq/BigEgqBMT.png
>
>
HTML https://cleantechnica.com/2018/06/11/magnetic-gears-reduce-cost-of-wind-turbines-wave-power/
HTML https://cleantechnica.com/2018/06/11/magnetic-gears-reduce-cost-of-wind-turbines-wave-power/
>
> Agelbert COMMENT: I have always loved the magnetic gear
concept. I imagine it has not gained more traction (pun intented
😎) due to the force needed for many applications.
Nevertheless, I can see where a slow rotating giant transmission
can make use of magnetic gears effectively, thereby saving
millions of dollars in lubricant, while prolonging the life of
the transmission itself simply because the "gears" never wear
out.
HTML http://www.createaforum.com/gallery/renewablerevolution/3-080515182559.png
>
> I think transmissions on ships could benefit from magnetic
gears as well. The less lubricants, particularly fossil fuel
based lubricants, needed, the better!
>
>
[center]
HTML http://renewablerevolution.createaforum.com/gallery/renewablerevolution/3-120118181944.png[/center]
>
--- End Quote ---
Interesting. Magnetic drives already exist but on the very
small level. I would not have thought wind or under water wave I
would think Vehicles. Shaving weight and increasing reliability
would help improve gas mileage. I'll watch this to see if it
makes it out of the lab.
[/quote]
What caught my eye was the torque. If this magnetic gear system
can deliver 4000 newton meters = 3000 pounds feet — nearly four
times more than a Tesla Model S P100D without overheating for
unlimited amounts of time, that is a game changer for machinery
everywhere. ABB is not a small outfit. I think great innovations
will come from this research.
#Post#: 9934--------------------------------------------------
Re: Magnetic Gears
DIR By: AGelbert
Date: June 17, 2018, 12:46 pm
---------------------------------------------------------
--- Quote from: jdwheeler42 link ---
>
> [quote author=agelbert link=topic=559.msg156013#msg156013
date=1529098361]
> Nevertheless, I can see where a slow rotating giant
transmission can make use of magnetic gears effectively, thereby
saving millions of dollars in lubricant, while prolonging the
life of the transmission itself simply because the "gears" never
wear out.
HTML http://www.createaforum.com/gallery/renewablerevolution/3-080515182559.png
>
--- End Quote ---
"Never" is a verry long time... magnets actually do wear out
eventually, unless they are kept at absolute zero. The hotter
they get, the quicker they demagnetize. Raise a magnet to its
melting point and it will demagnetize instantly, unless it is
already in a strong enough magnetic field.
But, for a wind turbine whose lifespan is measured in decades,
this should be negligible... as long as there are no volcanoes
erupting nearby ;-)
[/quote]
Agreed about the wind turbines. The big plus there is that their
efficiency goes up several percentage points because they no
longer suffer from transmission gear friction losses. The fossil
fuelers will not like that.
HTML http://www.createaforum.com/gallery/renewablerevolution/3-141113185047.png<br
/>
As to magnetic gears wearing out, Yes and no. An increase in
heat, as you stated, debilitates a magnetic field, but as long
as the heat is not above a certain threshold (far above ablosute
zero), the field strength recovers completely, for most
practical purposes, when the temperature goes back to normal
operating temperature. Yes, there is SOME degradation if the
temerature is not above absolute zero, but the rate of
degradation is insignificitant compared to mechanical gear
degradation from friction.
True, very high heat disrupts the molecular alignment that gives
a a magnet its gauss strengh, hence your view view that they
"wear out". In the factory process making a magnet, as you know,
a strong magnetic field is placed over a molten piece of
potentially magnetic material and allowed to cool, producing a
"permanent" magnet.
In truth. magnets do not "wear out", ever, if you are using
electromagnetism. I understand your assumption about "wear" with
these magnetic gears may be based on them being permanent
magnets that overheat and lose effectiveness over time, but that
is not relevant to the comparison with mechanical gear wear. A
mechanical gear wears, as you know, because of friction. There
is zero friction with magnetic gears. That is the BIG DEAL that
can change he entrie paradigm of the efficiency calculations,
and therefore minimum energy requirements, to run our
civilization. With magnetic gears, you eliminate a HUGE loss of
efficiency now present in every single machine that hitherto
used mechanical gears.
The rate of wear of mechanical gears is orders of magnitude
above the "wear" from normal magnetic heat caused degradation.
Here's a screenshot from one of the videos by Amory Lovins on
the inefficiencies of our civilization. As you can see
mechanical transmission (i.e. friction losses from mechanical
gears) are a big drag on efficiency. We get rid of that and it's
a whole new LOWER energy required ball game. 💫
HTML http://www.createaforum.com/gallery/renewablerevolution/3-141113185441.png
[center]
HTML http://renewablerevolution.createaforum.com/gallery/renewablerevolution/3-160618215234.png[/center]
#Post#: 9935--------------------------------------------------
Re: Magnetic Gears
DIR By: AGelbert
Date: June 17, 2018, 12:47 pm
---------------------------------------------------------
--- Quote from: David B. link ---
>
> well texas a and m better hurry up this one is already
patented and undergoing testing.
>
HTML https://www.engineering.com/ElectronicsDesign/ElectronicsDesignArticles/ArticleID/6466/Shifting-Gears-on-Wind-Turbines.aspx
HTML https://www.engineering.com/ElectronicsDesign/ElectronicsDesignArticles/ArticleID/6466/Shifting-Gears-on-Wind-Turbines.aspx
>
--- End Quote ---
Interesting! 8) he race is ON! ;D
#Post#: 9936--------------------------------------------------
Re: Magnetic Gears
DIR By: AGelbert
Date: June 17, 2018, 1:23 pm
---------------------------------------------------------
[center]Hat Tip to David B. for pointing me to this EXCELLENT
article. 👀[/center]
Agelbert NOTE: This article is 5 years old, but worth your
attention. Perhaps it has not gained much attention, simply
because the units are not for huge wind turbines that get all
the news. Nevertheless, they are doing a great service for
smaller installations like homes and farms (see video at the end
of this article and 2017 press release).
Shifting Gears on Wind Turbines
Tom Lombardo posted on October 13, 2013 | 2 Comments | 16387
views
[center]To gear or not to gear?[/center]
Most wind turbines have gearbox transmissions that connect the
slowly spinning turbine with the speed-hungry generator. But
gearboxes have disadvantages: they’re noisy, complex, and prone
to failure. Gearboxes need regular maintenance and lubrication,
increasing their total cost of ownership. Some manufacturers
have opted for gearless direct-drive turbines, but there’s a
trade-off: because the shaft spins slowly, they require much
larger permanent-magnet generators, increasing the weight and
initial cost of the turbines. A new technology may capture the
best of both designs.
Windtech has partnered with Future Force LLC to build a turbine
based on the Zero Contact TransmissionTM (ZCT) patented by
Future Force. The technology uses a transmission of sorts, but
instead of mechanical gears, belts, or chains, the ZCT uses
neodymium permanent magnets to make the generator in the turbine
spin five times faster than the rotor. Lab tests conducted at
the University of St. Thomas (Minnesota) have shown the ZCT to
be 98% efficient at transferring energy from its input to its
output.
[center][img
width=800]
HTML https://www.engineering.com/Portals/0/BlogFiles/tlombardo/ZCT.JPG[/img][/center]
As shown above, the rotor drives the main shaft, which is
magnetically coupled (via the ZCT) to five independent
generators, each spinning five times faster than the rotor. (The
picture only shows four generators, but their documentation says
five. There must be one in the middle.) This provides
redundancy; the turbine could withstand the failure of one or
two generators and still produce some power. The turbine is
capable of generating substantial energy at low wind speeds; its
peak power occurs when the wind speed is 8.1 m/s (18 mph), where
comparable turbines require speeds in excess of 12 m/s (27 mph)
to achieve peak output. Its startup speed is a meager 2.2 m/s
(5.0 mph). It’s designed for locations with average wind speeds
of 4 m/s (8.8 mph), which makes wind power viable in 50% more
places.
Windtech is currently testing a prototype of its 100E 10 kW
turbine (pictured below) in Glencoe MN. They plan to sell the
100E at a price that’s competitive with other units of similar
size, making it more likely that customers will take this
turbine out for a spin.
[center][img
width=800]
HTML https://www.engineering.com/Portals/0/BlogFiles/tlombardo/ZCTPhoto.JPG[/img][/center]
HTML https://www.engineering.com/ElectronicsDesign/ElectronicsDesignArticles/ArticleID/6466/Shifting-Gears-on-Wind-Turbines.aspx
Agelbert NOTE: The following video shows WINDTECH 8 KW VAWT AND
14 KW HAWT WIND TURBINE for small sites and homes ( 📢
Eddie, check this out!) and the BREAK THROUGH TECHNOLOGY of
their patented Zero Contact Transmission (ZCT), a unique system
that eliminates contact friction:
HTML http://www.createaforum.com/gallery/renewablerevolution/3-080515182559.png
<br
/>
HTML http://www.createaforum.com/gallery/renewablerevolution/3-080515182559.png
<br
/>
HTML http://www.createaforum.com/gallery/renewablerevolution/3-080515182559.png
[center]
HTML https://youtu.be/xy_Mgblb7Cw[/center]
[center]Zero-Contact Transmission logs 15,000 hours of operation
👀
HTML http://www.createaforum.com/gallery/renewablerevolution/3-141113185047.png<br
/>
[/center]
June 19, 2017
Future Force Zero Contact Transmission (ZCT) hits 15,000 hour
milestone. The ZCT designed and built for WindTech, Inc. just
surpassed 15,000 hours of operation with NO lubrication.
HTML http://www.createaforum.com/gallery/renewablerevolution/3-141113185441.png
The ZCT utilizes magnetic propulsion so there is no friction or
need for lubricants. Mike Tkadlec, founder of Future Force and
inventor of the Zero Contact Transmission said, “to deploy a ZCT
in a wind turbine is perfect for proving the viability of a high
torque magnetic propulsion transmission which operates at 35%
greater efficiency than a standard oil-encased gearbox. This is
a major breakthrough in advancing to the next size ZCT for mW
generators without lubrication.”
Future Force, LLC is a privately-owned company offering
licensing to it’s patented magnetic propulsion technologies.
More information can be found at www.futureforcellc.com
HTML http://futureforcellc.com/futureforce/2017/06/19/zero-contact-transmission-logs-15000-hours-operation/
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