Patent ID: 8369059

Claim:
A method for current compensation for an electrical system having a voltage source and a series circuit of an inductance and a capacitance connected in parallel with the voltage source, wherein the inductance is connected in series with the capacitance via a conductor, the conductor being connected to or within the series circuit, and the conductor being surrounded by a ring which can be magnetized and which includes an air gap of a disturbance current compensation device, the method comprising: magnetizing the ring via a magnetization coil of the disturbance current compensation device; applying a compensation voltage, by magnetization of the ring, to the conductor connected to or within the series circuit of the inductance and the capacitance; feeding a compensation current into the magnetization coil to magnetize the ring, using a converter unit of the disturbance current compensation device having a multiplicity of drivable power semiconductor switches; producing a compensation current preset value as a function of the voltage on the capacitance of the series circuit using a regulation device of the disturbance current compensation device; and driving the drivable power semiconductor switches of the converter unit by a drive signal which is formed from the compensation current preset value by a drive circuit for the disturbance current compensation device.