Increasing the Excitation Current of a Multiphase AC Generator Connected to an Electrical System of a Motor Vehicle Upon the Activation of the Generator

摘要

A process for increasing the excitation current, particularly when activating the alternator, whose rectified alternator voltage is regulated by way of a regulator, is provided. For regulating the alternator voltage, the regulator sets the excitation current of an excitation winding of the alternator. The regulator further receives a phase signal. A rapid increasing of the excitation current to a defined value takes place, during which the phase signal is analyzed simultaneously. This rapid increasing continues until the phase signal or a quantity derived therefrom meets a defined condition with respect to the alternator voltage. Therefore, a further increasing of the excitation current takes place, preferably at a rate of change reduced with respect to the previous rapid increase.

主权项

1. A method for increasing an excitation current of a polyphase alternating-current alternator connected to an on-board power supply system of a motor vehicle, wherein a rectifier is connected to an output side of the alternator and wherein the rectifier is configured to generate a rectified alternator voltage being regulated by way of a regulator that sets the excitation current of an excitation winding of the alternator and receives a phase signal, the method comprising the acts of:
increasing, rapidly, the excitation current; analyzing, during said rapid increasing, the phase signal, the excitation current being rapidly increased until the phase signal or a quantity derived therefrom meets a condition with respect to a present rectified alternator voltage, and increasing further the excitation current.