Patent ID: 8897045

Claim:
A method for controlling a converter, connected to a DC voltage circuit and to phases of an AC voltage network, the converter having controllable power semiconductors, which comprises the steps of: prescribing setpoint values for a control unit; sensing actual values on an AC voltage side of the converter using phase measuring sensors and supplying the actual values to the control unit; comparing in the control unit one of the actual values or a variable derived from the actual values with at least one of the setpoint values resulting in comparison results; providing the comparison results to a controller, the controller using the comparison results as a basis for producing a reference variable; transmitting the reference variable to an ignition unit, and the ignition unit actuating the controllable power semiconductors such that the actual values or a variable derived from the actual values corresponds to at least one of the setpoint values; and providing a pilot unit which takes parameters as a basis for calculating at least one step change reference variable and the step change reference variable is transmitted to the ignition unit, and the controllable power semiconductors are actuated on a basis of the step change reference variable; wherein the pilot unit interrupts a transmission of the reference variable from the control unit to the ignition unit and instead transmits the step change reference variable to the ignition unit.