| 摘要 |
The disclosure specifies a method for operating a converter circuit, the converter circuit having a converter unit 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 (iNH) to a system current setpoint value (iNHref), where H=1, 2, 3, . . . . In order to reduce a harmonic component in the system voltages, the system current setpoint value (iNHref) is formed by adjusting an H-th harmonic component of system voltages (uNH) to a predeterminable system voltage setpoint value (uNHref), the control difference (uNHdiff) from the H-th harmonic component of the system voltages (uNH) and the system voltage setpoint value (uNHref) being weighted by a system impedance (yNH) determined with respect to the H-th harmonic component. In addition, an apparatus is disclosed for implementing the method.
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