Friday, February 11, 2011

Online Electric Train in South Korea

KAIST introduces environmentally friendly public transportation to Seoul Grand Park in Gwacheon City (KAIST university, Mar. 9, 2010)
This new type of electric train makes use of power buried underground, avoiding the problems of overhead wires or heavy batteries, and can maintain a speed of 62 kph, more than enough for most downtown cities. It seems to be a more efficient and lighter form of emission-free public transit than conventional Electric Light (Capacity) Rail

Key Quotes

“On March 9, 2010, Seoul City and KAIST celebrated the completion of an online electric vehicle (OLEV) that picks up electricity from power cables buried underground through a non-contact magnetic charging method…OLEV's battery size is one-fifth of the batteries installed in electric vehicles currently on the market.”
“If the OLEV charging method is applied to the public bus system in South Korea, the underground power lines need to be installed on only 20% of the total bus route”
“solves many of the issues related to the current batteries of electric vehicles, including size, expense, and maintenance.. prevents potential electrical hazards, such as electric shock, that result from direct contact with power sources”
“In terms of power system transmission efficiency, KAIST's research team achieved a maximum pick-up capacity of 62kw/h, 74% with an airgap height of 13cm from the road to the bottom of the vehicle.”
“Introduction of commercial product to market (2013 and beyond)”

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