Patent ID: 7825533
Filing Date: 2010-11-02
Classification: H04B

Abstract:
1. A transmission system for exchanging information data between an electrical load and a converter over phase conductors connecting the electrical load with the converter, comprising: a converter having a sine-wave filter which comprises serially connected series inductors in each phase and filter capacitors, a supply cable connecting the phase conductors of the sine-wave filter of the converter with the electric load, a transmitter located in or on the electric load and connected between two phase conductors, said transmitter configured to transmit the information data characteristic of the load, at least one additional inductive component entering saturation at a current which is significantly less than a rated current of the electric load so as to be fully effective at a current level near zero when the converter is blocked, to allow measurement of a voltage drop across the at least one additional inductive component, said at least one additional inductive component connected to at least one of the phase conductors of the supply cable, and a receiver located in or on the converter and connected in parallel with at least the at least one additional inductive component for receiving the information data from the transmitter via the supply cable.