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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These tests will have a total duration of about 18 months after which more on-road trials would probably need to be conducted.
It takes about 30 minutes for OLEV kaisr fully charge and they can travel for 40 kilometers between charges about 24 miles and that means they could potentially veer off the established charging route on occasion if they needed to.
Moreover, if the primary and secondary coils are vertically misaligned by a distance over 3mm, the power efficiency drops greatly.
This is certainly a turning point for OLEV to become more commercialized and widely accepted for mass transportation in our daily living. 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. Electric vehicle technologies Electric vehicles. 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.
Another advantage of this system is that it can also discharge power on to the general power grid. In response to the cost issue of gen 2, the third generation OLEV was developed. 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 flux to flow through compared to gen 2. This approach is increasingly being tested in various countries as a potential means of charging EVs on the move. The plates buried beneath the road surface account for between 5 and 10 percent of the entire route and remain switched off until a vehicle approaches.
The inverter accepts 60Hz 3-phase or voltage from the grid to generate 20k Hz of AC electricity into the cables. This device, which produces high voltage, high frequency alternating currents, enabled Tesla to transfer power over short distances without interconnecting wires via resonant inductive coupling, the near-field wireless transmission of electrical energy between two magnetically coupled coils.
Wireless energy transfer strips for electric vehicles and buses
Overall, the gen 3 OLEV made up for the gen 1’s small margins and gen 2’s increased cost. IWES found that even when a car is 20 centimeters away from a coil embedded in the road, an efficiency level of between 93 and 95 percent is still achievable across the entire power range from watts to 3.
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.
Some people question whether the system could ever be refined so that it can be used in cars, simply because the equipment used on the vehicles is too bulky at lbs. If the trials are successful, it could lead to a revolution in sustainable road travel within the UK. 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.
To power the primary coils, the cables are attached to the South Korean national power grid through a power inverter. 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.
Breaking News Patients now living a median 6. However, the U shaped cores also require return cables which bumps up the cost of production.
Wireless energy transfer strips for electric vehicles and buses
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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 A trackless train was used as the demonstration vehicle, consisting of a tractor fitted with magnetic induction pick-ups and three passenger carriages.
Fraunhofer’s inductive charging coil for electric cars [Image source: Kaisg 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.
Power comes from the electrical cables buried under the surface kaost the road, creating magnetic fields. Wireless charging in the UK is not without its critics. After the successful kiast of the two OLEV buses by the end of this year, Gumi City plans to provide ten more such buses by Views Read Edit View history.
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. Wireless transfer was olevv demonstrated by Nikolai Tesla in 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 oev air quality, reduced noise and lower carbon emissions.
Online Electric Vehicle
From Wikipedia, the free encyclopedia. This page was last edited on 17 Marchat 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.
KAIST’s wireless Online Electric Vehicle, OLEV, runs inner city roads | EurekAlert! Science News
This is actually getting quite exciting, given that other companies around the world are beginning to pick up on this. 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 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.
This design combines the magnetic fields of the two sides of the cables and shapes the fields in a way that maximizes induction.
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.