Re: [EVDL] EVLN: Power transmitted wirelessly to run 4 In-Wheel e-Motors
Paul Dove via EV wrote: It's called inductive charging. I have a toothbrush that uses this technology. GM was the first to do this with electric cars with the EV1 but they never put it into production that I know of. Hi Paul, Inductive charging is in fact a lot older. There were inductive chargers in the 1920's. It's basically just a conventional transformer cut in half, with one half in the floor and the other half in the car. Park over it, switch it on, and the two halves clamp together like a big electromagnet. Now you have a "whole" transformer, and it charges the car like any other transformer. Inductran Corp has been making inductive chargers for factory EV since at least the early 1970's. I'm sure there are other suppliers as well, since the original patents on the idea are long expired. GM patented their version of it (which used higher frequencies, to get the size of the transformer halves down). They called it the "magnecharger", and tried to get it legislated as the standard way to charge EVs (by making everything else illegal). Ford of course came up with a competitive standard (Avcon). The result was that neither of them succeeded (like VHS and Betamax; both lost in the end). Though in the case of this particular press release, they aren't talking about inductive charging. They are pretending that the two parts of a motor (stator and rotor) are separate, so that their "breakthrough" is to "wirelessly" transfer power between them (which all motors do anyway). -- The greatest pleasure in life is to create something that wasn't there before. -- Roy Spence -- Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EVLN: Power transmitted wirelessly to run 4 In-Wheel e-Motors
It's called inductive charging. I have a toothbrush that uses this technology. GM was the first to do this with electric cars with the EV1 but they never put it into production that I know of. Sent from my iPhone > On May 31, 2015, at 11:03 AM, Lee Hart via EV wrote: > > Peri Hartman via EV wrote: > From: "brucedp5 via EV" >>> Researchers at University of Tokyo...the “world’s first in-wheel >>> motor system for electric vehicles” that transmits power wirelessly >>> to run motors attached with each wheel. > > If this was done in the USA, I'd say it was "click-bait" trolling for > investors. Calling anything "wireless" is fashionable, and so is done to get > free press releases and widespread publicity, in the hopes of luring in > gullible investors. > > Every electric motor by nature has "wireless" energy transfer. There are > coils on the stator, coils on the rotor, and nothing between them but air. > Wireless power transfer! A miracle! > > No, it's not. It's the same old thing, just "spin doctored" to sound like > something new. > -- > The greatest pleasure in life is to create something that wasn't > there before. -- Roy Spence > -- > Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA > (http://groups.yahoo.com/group/NEDRA) > ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EVLN: Power transmitted wirelessly to run 4 In-Wheel e-Motors
Peri Hartman via EV wrote: From: "brucedp5 via EV" Researchers at University of Tokyo...the “world’s first in-wheel motor system for electric vehicles” that transmits power wirelessly to run motors attached with each wheel. If this was done in the USA, I'd say it was "click-bait" trolling for investors. Calling anything "wireless" is fashionable, and so is done to get free press releases and widespread publicity, in the hopes of luring in gullible investors. Every electric motor by nature has "wireless" energy transfer. There are coils on the stator, coils on the rotor, and nothing between them but air. Wireless power transfer! A miracle! No, it's not. It's the same old thing, just "spin doctored" to sound like something new. -- The greatest pleasure in life is to create something that wasn't there before. -- Roy Spence -- Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EVLN: Power transmitted wirelessly to run 4 In-Wheel e-Motors
As has been discussed many times, the real problem with in-wheel motors
is the additional unsprung weight. This is design is interesting in
that it would reduce that weight. Would it be enough? A coil of wire
around the wheel still would add quite a bit of weight. Removing the
axle would compensate that a little bit.
All together this sounds like a pancake style motor with a 10cm gap.
Since the stator would be fixed, it seems there would be a lot of
misalignment happening while driving on a bumpy road - possibly vertical
travel of, what, 10-20cm - resulting in reduced power? Maybe that's
good - it forces you to slow down on bumpy roads :)
Peri
-- Original Message --
From: "brucedp5 via EV"
To: ev@lists.evdl.org
Sent: 30-May-15 4:42:33 AM
Subject: [EVDL] EVLN: Power transmitted wirelessly to run 4 In-Wheel
e-Motors
http://www.greentechlead.com/electric-vehicle/japanese-wireless-tech-promise-for-electric-vehicles-23819
Japanese wireless tech promise for electric vehicles
May 27, 2015 Ajith Kumar S
[image
http://www.greentechlead.com/wp-content/uploads/2015/05/In-Wheel_Wireless_Motor.jpg
]
Researchers at University of Tokyo claim to have developed a technology
for
wireless transfer of electricity which they believe will help develop
more
advanced electric vehicles.
The team has incorporated the technology in the “world’s first in-wheel
motor system for electric vehicles” that transmits power wirelessly to
run
motors attached with each wheel.
The new system transmits electricity from an onboard power source to a
coil
attached to the wheel hubs without wires.
The researchers say the system wirelessly transmits electricity stored
in
the vehicle’s batteries over a distance of 10 centimetres. Power from
the
batteries is passed to a transmitting coil from where it is transmitted
over
the 10-cm distance to a receiving coil attached to the wheel hub.
“This technology will pave the way for the development of electric
vehicles
that receive electricity wirelessly from transmitting coils embedded
under
road surfaces. It can be also applied to fuel-cell vehicles and
industrial
machinery,” Japanese newspaper Asahi Shimbun has quoted Hiroshi
Fujimoto, an
associate professor at the University of Tokyo specializing in electric
vehicle control, as saying.
According to the researchers, the in-wheel motor, also known as wheel
hub
motor, is an electric motor incorporated into the hub of a vehicle’s
wheels
to directly drive each wheel.
The technology does away with the need for a drive shaft, which is part
of
conventional electric vehicles and mechanically transfers energy to all
the
wheels and drives them.
The new technology could help build lighter vehicles that require less
energy. It should also allow greater control on acceleration and
braking,
and mitigates the risk of skidding.
Current cars that employ in-wheel motors depend on wires to transmit
electricity and the complex wiring distribution combined with
susceptibility
to short circuits have hindered development of such a vehicle for
practical
purposes.
The researchers have also succeeded in running a motor using 3
kilowatts of
electricity and sent control information to each wheel using
standardized
Bluetooth wireless technology.
And the researchers say the prototype rear-wheel-drive car they have
developed can, in theory, run at 75kmph.
[© greentechlead.com]
For EVLN posts use:
http://evdl.org/evln/
http://www.inautonews.com/uk-londons-black-cab-goes-green-with-electric-powertrain
London.uk’s black cab goes green with pih powertrain
http://www.edie.net/news/6/Zero-emissions-black-cab-enters-mass-production/28320/
http://carandvannews.co.uk/first-uk-drive-volkswagen-golf-gte/
Volkswagen Golf GTE pih, First UK drive
http://www.tctimes.com/living/features/a-year-in-a-volt/article_8d3d0b96-0476-11e5-8d5b-f7e8a96e27e8.html
'A year in a Volt' pih
http://www.bikebiz.com/news/read/2x2-enters-the-e-bike-market-with-montague/017675
Pininfarina Fuoriserie> The Prius of ebicycles, no flappy cables nor
unsightly pack
http://www.gizmag.com/pininfarina-fuoriserie-e-bike/34581/
http://www.canadianmanufacturing.com/technology/indian-technology-firm-gets-provincial-funding-to-build-vehicle-charging-system-148094/
Ontario.ca
Tech Mahindra's Intelligent EVSE queues its power draw
http://www.utilitydive.com/news/utilities-can-rate-base-ev-charging-stations-under-new-washington-law/398590/
Utilities can rate base EV charging stations under new WA law
+
EVLN: Uber.cn fleet using Trumpchi GA5 REV pih
{brucedp.150m.com}
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http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Power-transmitted-wirelessly-to-run-4-In-Wheel-e-Motors-tp4675864.html
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[EVDL] EVLN: Power transmitted wirelessly to run 4 In-Wheel e-Motors
http://www.greentechlead.com/electric-vehicle/japanese-wireless-tech-promise-for-electric-vehicles-23819
Japanese wireless tech promise for electric vehicles
May 27, 2015 Ajith Kumar S
[image
http://www.greentechlead.com/wp-content/uploads/2015/05/In-Wheel_Wireless_Motor.jpg
]
Researchers at University of Tokyo claim to have developed a technology for
wireless transfer of electricity which they believe will help develop more
advanced electric vehicles.
The team has incorporated the technology in the “world’s first in-wheel
motor system for electric vehicles” that transmits power wirelessly to run
motors attached with each wheel.
The new system transmits electricity from an onboard power source to a coil
attached to the wheel hubs without wires.
The researchers say the system wirelessly transmits electricity stored in
the vehicle’s batteries over a distance of 10 centimetres. Power from the
batteries is passed to a transmitting coil from where it is transmitted over
the 10-cm distance to a receiving coil attached to the wheel hub.
“This technology will pave the way for the development of electric vehicles
that receive electricity wirelessly from transmitting coils embedded under
road surfaces. It can be also applied to fuel-cell vehicles and industrial
machinery,” Japanese newspaper Asahi Shimbun has quoted Hiroshi Fujimoto, an
associate professor at the University of Tokyo specializing in electric
vehicle control, as saying.
According to the researchers, the in-wheel motor, also known as wheel hub
motor, is an electric motor incorporated into the hub of a vehicle’s wheels
to directly drive each wheel.
The technology does away with the need for a drive shaft, which is part of
conventional electric vehicles and mechanically transfers energy to all the
wheels and drives them.
The new technology could help build lighter vehicles that require less
energy. It should also allow greater control on acceleration and braking,
and mitigates the risk of skidding.
Current cars that employ in-wheel motors depend on wires to transmit
electricity and the complex wiring distribution combined with susceptibility
to short circuits have hindered development of such a vehicle for practical
purposes.
The researchers have also succeeded in running a motor using 3 kilowatts of
electricity and sent control information to each wheel using standardized
Bluetooth wireless technology.
And the researchers say the prototype rear-wheel-drive car they have
developed can, in theory, run at 75kmph.
[© greentechlead.com]
For EVLN posts use:
http://evdl.org/evln/
http://www.inautonews.com/uk-londons-black-cab-goes-green-with-electric-powertrain
London.uk’s black cab goes green with pih powertrain
http://www.edie.net/news/6/Zero-emissions-black-cab-enters-mass-production/28320/
http://carandvannews.co.uk/first-uk-drive-volkswagen-golf-gte/
Volkswagen Golf GTE pih, First UK drive
http://www.tctimes.com/living/features/a-year-in-a-volt/article_8d3d0b96-0476-11e5-8d5b-f7e8a96e27e8.html
'A year in a Volt' pih
http://www.bikebiz.com/news/read/2x2-enters-the-e-bike-market-with-montague/017675
Pininfarina Fuoriserie> The Prius of ebicycles, no flappy cables nor
unsightly pack
http://www.gizmag.com/pininfarina-fuoriserie-e-bike/34581/
http://www.canadianmanufacturing.com/technology/indian-technology-firm-gets-provincial-funding-to-build-vehicle-charging-system-148094/
Ontario.ca
Tech Mahindra's Intelligent EVSE queues its power draw
http://www.utilitydive.com/news/utilities-can-rate-base-ev-charging-stations-under-new-washington-law/398590/
Utilities can rate base EV charging stations under new WA law
+
EVLN: Uber.cn fleet using Trumpchi GA5 REV pih
{brucedp.150m.com}
--
View this message in context:
http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Power-transmitted-wirelessly-to-run-4-In-Wheel-e-Motors-tp4675864.html
Sent from the Electric Vehicle Discussion List mailing list archive at
Nabble.com.
___
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
For EV drag racing discussion, please use NEDRA
(http://groups.yahoo.com/group/NEDRA)
