METHOD AND SYSTEM FOR CONTROLLING THE PROGRESSIVE CHARGING OF AN ALTERNATOR OF A MOTOR VEHICLE, AND MOTOR VEHICLE ALTERNATOR COMPRISING SUCH A SYSTEM
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United States of America Patent
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Jul 2, 2015
app pub date -
Jul 31, 2013
filing date -
Aug 28, 2012
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Abstract
A method carried out in an alternator supplying a supply voltage slaved to a nominal value by means of a control loop controlling an excitation current of the alternator via a pulse width modulation of the current. The method limits the power draw by the alternator from the heat engine of the vehicle in a progressive response phase (LRC_Ph) with a higher supply voltage drop to a pre-determined triggering threshold by only authorizing progressive increases of a current cyclic ratio (DC_EXC) of the excitation current from an initial cyclic ratio (DC_I) to an expected cyclic ratio calculated by the control loop. According to the invention, at the beginning of the progressive response phase, the initial cyclic ratio is increased by a pre-determined jump only if the regulation loop does not have an acyclism.
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