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

Journal Article
2009-01-0642
ISSN: 1946-4614, e-ISSN: 1946-4622
DOI: https://doi.org/10.4271/2009-01-0642
Published April 20, 2009 by SAE International in United States
Development of Commutation Technology for In-vehicle DC Motor Directly Driven by 42V Vehicle Battery
Sector:
Citation: Kumagai, S., Kawashima, Y., Saito, M., Shioda, N. et al., "Development of Commutation Technology for In-vehicle DC Motor Directly Driven by 42V Vehicle Battery," SAE Int. J. Passeng. Cars – Electron. Electr. Syst. 2(1):219-226, 2009, https://doi.org/10.4271/2009-01-0642.
Language: English

Abstract:

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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