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   Testing of Silver-, Copper- and Electro-Graphite Brush Materials for Slip Ring Units   [View] 
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 Author(s)   E. Nordlund; F. Magnussen; G. Bassilious; P. Thelin 
 Abstract   In a novel hybrid propulsion system, the Four Quadrant Transducer (4QT), a slip ring unit is required to transfer alternating current to a rotating three-phase winding. This is an automotive application with high demands on cost effectiveness and reliability and the slip ring unit is one of the potentially weak links in the system that has to be investigated carefully. This paper investigates the impact on the performance of a slip ring unit equipped with different brush materials. The investigation focuses on the losses and the temperature rises in the slip ring unit. 
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Filename:Unnamed file
Filesize:385 KB
 Type   Members Only 
 Date   Last modified 2006-01-23 by System