Contribution à l'étude de l'alternateur à griffes
Application au domaine automobile

Abstract : Claw pole alternator widely used as generator in passenger cars. It has to generate
sufficient energy for all electric consumers and to keep the battery charge in balance. Our
work aims at improving the output performance, increasing the efficiency and reducing
the magnetic audible noise. Measurements of the total losses in combination with a
subtraction of all analytically defined loss mechanisms lead to build losses distributions
model behaviour at several speeds, according to the output current. Using the finite
element method, we have defined the aim stator copper losses sources and iron losses
sources in both of the rotor and the stator while highlighting the stator losses create by the
axial flux component. Thereafter, several solutions have been studied in order to increase
the output current, to reduce the audible noise and to reduce both of the stator copper
losses and the total iron losses, all these solutions have been tested on prototypes. Finally,
a mono objective optimization method is used in order to increase the output current and
decrease the torque wave form with an aim of reducing the magnetic noise.
Document type :
Theses
Electric power. Institut National Polytechnique de Grenoble - INPG, 2005. French


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Submitted on : Thursday, July 26, 2007 - 4:14:26 PM
Last modification on : Thursday, July 26, 2007 - 4:43:56 PM

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Lilya Bouarroudj. Contribution à l'étude de l'alternateur à griffes
Application au domaine automobile. Electric power. Institut National Polytechnique de Grenoble - INPG, 2005. French. <tel-00165565>

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