| 摘要 |
The invention specifies a method for operating a converter circuit, the converter circuit having a converter unit (2) with a large number of drivable power semiconductor switches and with a three--phase electrical AC voltage system, in which the drivable power semiconductor switches are driven by means of a drive signal (SA) formed from a control signal ((SR), and the control signal (SR) is formed by adjusting an H-th harmonic component of system currents (i NH) to a system current setpoint value (i NHref), where H=1, 2, 3, .... In order to reduce a harmonic component in the system voltages, the system current setpoint value (i NHref is formed by adjusting an H-th harmonic component of system voltages (u NH) to a predeterminable system voltage setpoint value (U NHref), the control difference (U nHdiff) from the H-th harmonic component of the system voltages (U NH) and the system voltage setpoint value (U NHref) being weighted by a system impedance (Y NH) determined with respect to the H-th harmonic component. In addition, the invention specifies an apparatus for implementing the method. |
