'Process for the shroud at least a consumer against overvoltages and device for implementing the process.

摘要

A method and a device for protecting at least one consumer against overvoltages when working with a method for non-contact transmission of electric power from one or more medium-frequency current sources, whose frequencies may have deviations around medium frequency fSUBM/SUB, to the at least one moving consumer via one or more transmission lines and transformer heads, allocated to the consumers, having a downstream matching controller for adjusting the power received from the transmission line; a transmission line is fed from a medium-frequency current source with a medium-frequency current that is constant in its effective value during the power transmission; the respective consumer is supplied with energy by at least one matching controller having at least one feed-in; one or more fed currents are rectified in each instance in a rectifier, smoothed in each instance by a link-circuit reactor and brought together; with the aid of a switch, the link-circuit current, brought together in each instance, is either supplied to a link-circuit capacitor buffering output voltage USUB=/SUB of the matching controller, or is shunted upstream of the link-circuit capacitor, depending upon the power demand of the consumers; and the voltage USUB=/SUB at at least one link-circuit capacitor is compared to a predefinable value, and if this value is exceeded, an electronic power circuit-breaker is turned on for shunting the link-circuit current.