Circuit configuration for eliminating EMC interference

摘要

A circuit configuration is disclosed for eliminating EMC interference, and a device includes such a circuit configuration, where a damping member is connected to at least one supply line leading to the consumer or consumers. In at least one embodiment optimal elimination of EMC interference of the electrical consumer or consumers is ensured, and overloading the power supply grid is avoided. To this end, in at least one embodiment the damping member is connected in series with a current-limiting element and can be connected to the consumer in parallel. It is thus possible to compensate for the effect of the current-limiting element and short-circuit said element for the operating state by way of a switch, whereby the element does not cause any loss of power outside of the power circuits and nevertheless has a current-limiting, that is, grid-friendly, effect during the power-up and charging process.

主权项

1. A circuit arrangement for eliminating EMC interference of an electrical consumer, comprising:
a damping member configured to store charge, the damping member connected to at least one supply line of the electrical consumer, the damping member connected in series with a current-limiting element of the circuit arrangement and being connected in parallel to the at least one supply line of the electrical consumer; a switch configured to bridge the current-limiting element; a first controller, including a microprocessor, configured to,
output a signal to the switch to trigger the switch, andtrigger the switch based on whether the damping member has charged to a desired charge level, the desired charge level for the damping member being selected such that a desired EMC level is achieved for the electrical consumer; and a second controller configured to control a capacitance of the damping member.