Lamm, August Uno
Published: August 18, 2006, 7:24 pm
Updated: August 18, 2006, 7:24 pm
This article has been reviewed by the following Topic Editor:
Peter Saundry
August Uno Lamm (1904–1989), a Swedish electrical engineer known as the father of high voltage direct current (HVDC) electrical transmission. HVDC became possible when he invented the mercury-arc “valve” (rectifier) that could operate at high voltages (1929). A rectifier is a component of an electric circuit used to change alternating current (AC) to direct current (DC). Although AC power dominates electric power transmission, HVDC is preferred for use in undersea cables, endpoint-to-endpoint long-haul bulk power transmission in remote areas, stabilizing a predominantly AC power-grid, and allowing power transmission between unsynchronized AC distribution systems.
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Citation
Cutler J. Cleveland (Lead Author);Peter Saundry (Topic Editor) "Lamm, August Uno". In: Encyclopedia of Earth. Eds. Cutler J. Cleveland (Washington, D.C.: Environmental Information Coalition, National Council for Science and the Environment). [First published in the Encyclopedia of Earth August 18, 2006; Last revised Date August 18, 2006; Retrieved May 20, 2013 <http://www.eoearth.org/article/Lamm,_August_Uno>
The Author
Cutler J. Cleveland is Professor of Earth and Environment at Boston University, where he also is on the faculty of the Center for Energy and Environmental Studies. Professor Cleveland is Editor-in-Chief of the Encyclopedia of Energy (Elsevier, 2004), winner of an American Library Association award, the Dictionary of Energy (Elsevier, 2005), Handbook of Energy (Elsevier, forthcoming), and is the Founding Editor-in-Chief of the Encyclopedia of Earth. He is the recipient of the Adelma ... (Full Bio)
August Uno Lamm (1904–1989), a Swedish electrical engineer known as the father of high voltage direct current (HVDC) electrical transmission. HVDC became possible when he invented the mercury-arc “valve” (rectifier) that could operate at high voltages (1929). A rectifier is a component of an electric circuit used to change alternating current (AC) to direct current (DC). Although AC power dominates electric power transmission, HVDC is preferred for use in undersea cables, endpoint-to-endpoint long-haul bulk power transmission in remote areas, stabilizing a predominantly AC power-grid, and allowing power transmission between unsynchronized AC distribution systems.
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