EV Engineering News

Korean researchers develop 180 kW wireless charging technology

The Korea Advanced Institute of Science and Technology (KAIST) and the Korea Railroad Research Institute (KRRI) have developed a wireless power transfer technology that can supply 180 kW of power at 60 kHz. KAIST first tested its On-line Electric Vehicle (OLEV) in 2009, and has made substantial improvements in size and charging power since then.

Last week, KAIST and KRRI demonstrated the wireless technology to the public by testing it on the railroad tracks at Osong Station in Korea. The test vehicles, a bus and a tram, receive power at an 85% transmission efficiency rate while maintaining a 20 cm air gap between the underbody of the vehicle and the road surface. In July 2013, the researchers plan to test OLEV on a public street in the city of Gumi.

Professor Dong-Ho Cho of KAIST said, “We have greatly improved the OLEV technology from the early development stage by increasing its power transmission density by more than three times. The size and weight of the power pickup modules have been reduced as well. We were able to cut down the production costs for major OLEV components, the power supply, and the pickup system, and in turn, OLEV is one step closer to being commercialized.”


Image: KAIST
Source: KAIST via Phys.org

Create Account. Already Registered? Log In

Virtual Conference on EV Engineering: Free to Attend

Don't miss our next Virtual Conference on April 15-18, 2024. Register for the free webinar sessions below and reserve your spot to watch them live or on-demand.


EV Engineering Webinars & Whitepapers

EV Tech Explained