The application relates to a method for operating a power converter (10) for exchanging electrical power (PDC, PAC) between a DC unit (11) and an AC network (13). The DC unit (11) is connected to a DC terminal (12) of the power converter (10) and exchanges DC power (PDC) with the power converter (10) depending on a
DC voltage (UDC) at the DC terminal (12). The AC network (13) is connected to an AC terminal (14) of the power converter (10) and exchanges
AC power (PAC) with the power converter (10) depending on a
voltage waveform deviation between an AC
voltage waveform (UAC) generated by a clocked
bridge circuit (15) of the power converter (10) and a network
voltage waveform (Ugrid) across the AC terminal (14).The power converter (10) uses a network-shaping AC control (20) to adjust the AC voltage profile (UAC) as a function of an
AC power setpoint (PAC,set) and varies the
AC power (PAC) in response to network events with an adjustable power response. The power response comprises a dynamic AC power deviation between the AC power (PAC) and a power
setpoint. The method is characterized in that the induced power response to a network event is adjusted using an
asymmetry characteristic (50, 51, 52, 53).The
asymmetry characteristic (50, 51, 52, 53) specifies different gains of a parameter (p) of the AC control (20) and / or a DC controller (30) depending on the sign of a deviation (p-plim) of the parameter (p) from a parameter
limit value (plim), wherein the parameter (p) in particular includes a
DC voltage difference (ΔUDC) between the
DC voltage (UDC) and a DC
setpoint voltage (UDC,set) and / or an AC
power difference (ΔPAC) between the AC power (PAC) and the AC power setpoint (PAC,set). The application further relates to a power converter and a power supply
system.