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SAE 2009-01-0642 : 2009

Development of Commutation Technology for In-vehicle DC Motor Directly Driven by 42V Vehicle Battery

Standard Details

For DC brush motors directly driven by 42V vehicle battery, carbon brush deterioration due to high voltage arc is a major factor to determine motor life [ 1 ]. The brush deterioration is significant especially in multipolar motors with lap-wound armature because they allow a large circulating current to flow into their brushes and it decreases commutation performance [ 2 ], [ 3 ], [ 4 ]. In this report, we propose 1) a new brush material capable of preventing brush deterioration even under high-voltage conditions and 2) a new winding method to minimize circulating current under electromagnetic polarization and to suppress high-voltage arc. With each of these new technologies, DC brush motor driven by 42V battery can operate longer than that driven by 14V battery.

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General Information

Status : ACTIVE
Standard Type: Main
Document No: SAE 2009-01-0642 : 2009
Document Year: 2009

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SAE 2009-01-0642 : 2009
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