A current source converter, CSC, for converting input electrical power to output electrical power, comprising: an input for receiving input electrical power from a power source; an output for providing output electrical power to a power grid; an intermediate circuit with at least one inductance (Ldc); a current source rectifier, CSR, comprising a plurality of switching devices (S1-S6) coupled with the input and with the intermediate circuit and operative according to a plurality of CSR switching control signals 142a to selectively couple the input to the intermediate circuit; a current source inverter, CSI, comprising a plurality of switching devices (S7-S12) coupled with the intermediate circuit and with the output and operative according to a plurality of CSI switching control signals to selectively couple the intermediate circuit to the output; a switch control system comprising: a generator side control component operatively coupled with the CSR to provide CSR switching control signals to the CSR to cause the CSR to convert input power from the power source to create a DC link current (ldc) in the intermediate circuit, a grid side control component operatively coupled with the CSI to provide CSI switching control signals to the CSI to convert the DC link current (Idc) to selectively provide the output electrical power to the power grid, and a DC link current control component operatively coupled with the generator side control component, wherein the DC link current control component is operative in a first mode to cause the generator side control component to provide the CSR switching control signals to at least partially regulate the DC link current (Idc); characterized in that the CSC further comprises a feedback system operatively coupled with the intermediate circuit and configured to provide at least one feedback value or signal to the switch control system indicative of a voltage (V Ldc) across the at least one inductance (Ldc), wherein the DC link current control component is operative to selectively enter the first mode based at least in part on the at least one feedback value or signal. an input for receiving input electrical power from a power source; an output for providing output electrical power to a power grid; an intermediate circuit with at least one inductance (Ldc); a current source rectifier, CSR, comprising a plurality of switching devices (S1-S6) coupled with the input and with the intermediate circuit and operative according to a plurality of CSR switching control signals 142a to selectively couple the input to the intermediate circuit; a current source inverter, CSI, comprising a plurality of switching devices (S7-S12) coupled with the intermediate circuit and with the output and operative according to a plurality of CSI switching control signals to selectively couple the intermediate circuit to the output; a generator side control component operatively coupled with the CSR to provide CSR switching control signals to the CSR to cause the CSR to convert input power from the power source to create a DC link current (ldc) in the intermediate circuit, a grid side control component operatively coupled with the CSI to provide CSI switching control signals to the CSI to convert the DC link current (Idc) to selectively provide the output electrical power to the power grid, and a DC link current control component operatively coupled with the generator side control component, wherein the DC link current control component is operative in a first mode to cause the generator side control component to provide the CSR switching control signals to at least partially regulate the DC link current (Idc);