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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Games Best Deals Of Moreover, if the primary and secondary coils are vertically misaligned by a distance over 3mm, the power efficiency drops greatly. To power the primary coils, the cables are attached to the South Korean national power grid through a power inverter. OLEV has a small battery one-third of the size of the battery equipped with a regular electric car.

Views Read Edit View history. Another advantage of this system is that it can also discharge power on to the general power grid. This is actually getting quite exciting, given that other companies around the world are beginning to pick up on this. From Wikipedia, the free encyclopedia. Skip to main content?

This power is sent to the electric motor and battery through a regulator a managing device that can distribute power based on needthereby charging the OLEV wirelessly. Retrieved from ” https: The road has a smart function as well, to distinguish OLEV buses from regular cars–the segment technology is employed to control the power supply by switching on the power strip when OLEV buses pass along, but switching it off for other vehicles, thereby preventing EMF exposure and standby power consumption.

However, it is perfect for buses, enabling them to make considerable weight savings on batteries. For example, Dr Paul Nieuwenhuis the director of Cardiff Business School’s Electric Vehicle Centre of Excellence is fairly skeptical, on grounds of the cost and the fact that battery technology is improving all the time, particularly with regard to what Tesla has managed to achieve in recent years.

Electric buses using the wireless transfer system are not currently competitive with diesel buses in terms of capital costs but they are in terms of total ownership costs because of the savings on batteries that are possible with this system as well as the low maintenance requirements.

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. By using this site, you agree to the Terms of Use and Privacy Policy. Wireless charging in the UK is not without its critics. Kaish, an OLEV tram does not require pantographs to feed power from electric wires strung above the tram route. A gap of 6. However, the U shaped cores also require return cables which bumps up the cost of production.


The Online Electric Vehicle OLEV is an electric vehicle that charges wirelessly while moving using electromagnetic induction the wireless transfer of power through magnetic fields. There is a receiving device installed on the underbody of the OLEV that converts these fields into electricity.

This is certainly a turning point for OLEV to become more commercialized and widely accepted for mass transportation in our daily living. Power cables are wrapped around the center kaust the fish bone structures to make the “primary coils”. In response to the cost issue of gen 2, the third generation OLEV was developed.

Korea unveils ‘recharging road’ for eco-friendly buses”. This in turn should help to improve the take-up of consumer electric vehicles.

This design combines the magnetic fields of the two sides of the cables and shapes the fields in a way that maximizes induction. IWES found that even when a car is 20 centimeters away from a coil embedded in the road, an efficiency level kaistt between 93 and 95 percent is still achievable across the entire power range from watts to 3. Use dmy dates from May A trackless train was used as the demonstration vehicle, consisting of a tractor fitted with magnetic induction pick-ups and maist passenger carriages.

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It takes about 30 minutes for OLEV to fully charge and they can travel for 40 kilometers between charges about kalst miles and that means they could potentially veer off the established charging route on occasion if they needed to.

The OLEV bus is an electric vehicle that can be charged while stationary or driving.

Wireless energy transfer strips for electric vehicles and buses

In Italy, such a system has been in use in Genoa and Turin for over ten years, providing 10 to 15 percent of the power for 30 electric buses which recharge at each bus stop. This is accomplished olve solving technological issues that limit the commercialization of electric vehicles such as price, weight, volume, driving distance, and lack of charging infrastructure.

Wireless transfer was first demonstrated by Nikolai Tesla in This page was last edited on 17 Marchat The vehicle complies with the international electromagnetic fields EMF standards of If you continue to use this site, you consent to our use of cookies. Power comes from the electrical cables buried under the surface of the road, creating magnetic fields.


South Korean road wirelessly recharges OLEV buses

Fraunhofer’s inductive charging coil for electric cars [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.

OLEV is a groundbreaking technology that accelerates the development of purely electric vehicles as a viable option for future transportation systems, be they personal vehicles or public transit. 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, incur minimum impact on road surfaces and reduce environmental impact from road transport including improvements in air quality, reduced noise and lower carbon emissions.

A wireless parking charge system on display at a motor show [Image source: The wireless transfer system means that batteries in electric vehicles can be reduced in size to about a third of that you would normally expect to find in an electric car.

The scientists have managed to reduce the number of bulky ferrite sheets by using coil systems, which also reduces the cost. The test vehicle, a sports car converted into an electric vehicle, managed to travel the entire route at a moderate speed while simultaneously charging its battery. These tests will have a total duration of about 18 months after which more on-road trials would probably need to be conducted. KAIST, via Wired Magazine ] Alongside innovative battery technology, another potential method for charging electric vehicles EVs could be wireless energy transfer strips installed on road surfaces.

Two other Fraunhofer institutes, the Fraunhofer Institutes for 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. As seen in the table above, the generation 1 OLEV lacks a realistic margin for error. It involves the olv 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.

Another system is currently under development at Utah State University, supported by funding from the Federal Transit Administration and an induction system also launched in The Netherlands in