METHOD FOR LIMITING THE CURRENT OUTPUT OF AN ELECTRIC GENERATOR AT A HIGH ROTATIONAL SPEED

摘要

The invention relates to a method for limiting the current output of an electric machine which operates as a generator and which comprises an excitation winding, by means of a control device. The excitation current flowing through the excitation winding is influenced and optionally reduced by the control device such that the maximum current output does not exceed an output current upper limit. When controlling the excitation current, a maximum reliable excitation current is taken into account. Different machine specifications or control specifications such as predefined generator voltage, rotational speed of the generator and predetermined output current upper limit are also taken into account. The invention also relates to a control device which puts into practice the claimed method for adapting the machine configuration in generators comprising excitation windings which are controlled by a control device. The current output upper limit is registered as either a fixed value or as a generator-specific value, for example on the band end of the control or generator fabrication.