Section Roundtrip Shuttle Operation Roundtrip Shuttle Between Campuses Seoul Shuttle Bus from Main Campus OLEV On-campus Shuttle Commute Bus. electric vehicle being developed at KAIST.2 The all-electric car of KAIST, named the On-Line Electric Vehicle (OLEV),. N.P. Suh (), D.H. Cho, C.T. Rim. KAIST. The Online Electric Vehicle (OLEV), developed by KAIST, is an electric vehicle that can be charged while stationary or driving, thus removing.
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KAIST’s wireless Online Electric Vehicle, OLEV, runs inner city roads
Moreover, if the primary and secondary coils are vertically misaligned by a distance over 3mm, the power efficiency drops greatly. After the successful operation of the two OLEV buses by the end of this year, Gumi City plans to provide ten more such buses by The ferrite cores in the primary coils were changed to a U shape and the cores in the secondary coil were changed a flat board shape to pick-up as much flux as possible.
Fraunhofer’s inductive charging coil for electric cars [Image source: It functions by using a segmented “recharging” road that induces a current in “pick-up” modules on the vehicle. In the meantime, at least one city in the UK, Milton Keynes, has already gone ahead with its own wireless transfer system, though this is fairly limited and requires buses to stop for several minutes at a time while charging. The scientists have managed to reduce the number of bulky ferrite sheets by using coil systems, which also reduces the cost.
Wireless energy transfer strips for electric vehicles and buses
This design combines the magnetic fields of the two sides of the cables and shapes the fields in a way that maximizes induction. Skip to main content?
If the trials are successful, it could lead to a revolution in sustainable road travel within the UK. This page was last edited on 17 Marchat These tests will have a total duration of about 18 months after which more on-road trials would probably need to be conducted.
However, the U shaped cores also require return cables which bumps up the cost of production. The lower current means a smaller magnetic field and requires the secondary coil to be very close to the floor, which can be an issue while driving.
Overall, the gen 2 made up for the gen 1’s margins but, was more costly. The tests, due to take place off-road at some point either this year or next, will evaluate the potential of the system to help reduce fuel costs, plev minimum impact on road surfaces and reduce environmental impact from road transport including improvements in air quality, reduced noise and lower carbon emissions.
A trackless train was used as the demonstration vehicle, consisting of a tractor fitted with magnetic induction pick-ups and three passenger carriages.
To kaust the primary coils, the cables are attached to the South Korean national power grid through a power inverter. The vehicle complies with the international electromagnetic fields EMF standards of It involves the transfer of electricity between two magnetically-charged plates, one of them buried in beneath the road or railway and the other slung beneath the chassis of a vehicle.
The wireless transfer system means that batteries in electric vehicles can be reduced in size to about a third of ,aist you would normally expect to find in an electric car.
Alongside innovative battery technology, another potential method for charging electric vehicles EVs could be wireless energy transfer strips installed on road surfaces.
OLEV kaidt a small battery one-third of the size of the battery equipped with a regular electric car. Korea unveils ‘recharging road’ for eco-friendly buses”.
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South Korean road wirelessly recharges OLEV buses – BBC News
The secondary coil uses a thicker variation of the w-shaped cores as a way to make up for the lesser area for the magnetic opev to flow through compared to gen 2. Another advantage of this system is that it can also discharge power on to kaost general power grid. There is a receiving kaiwt installed on the underbody of the OLEV that converts these fields into electricity. A wireless parking charge system on display at a motor show [Image source: In the gen 2 OLEV, the current in the primary coil was doubled to create a stronger magnetic field that allows for a larger air gap.
The system was developed by a German company, Conductix-Wampfler, which claims a percent energy-transfer efficiency. Two other Fraunhofer institutes, the Fraunhofer Institutes ksist Manufacturing Technology and Advanced Materials IFAM and for Transportation and Infrastructure Systems IVI, have successfully tested wireless transfer systems for use in cars, using a meter-long test route with coils embedded in the road.