A system comprising: a first direct current power supply comprising a first generator and a first rectifier circuit; a second DC power supply comprising a second generator and a second rectifier, wherein a first output of the first DC power supply and a second output of the second DC power supply are commonly coupled at a common bus point; a first current sensing device coupled between the first output of the first DC power supply and the common bus point; a first generator controller configured to: receive a first current signal from the first current sensing device; analyze the first current signal to determine a first voltage droop value based on the first current signal; and operate the first DC power supply to reduce a first voltage output of the first DC power supply by the first voltage droop value; and a second current sensing device coupled between a second output of the second DC power supply and the common bus point; and a second generator controller configured to: receive a second current signal sensed from the second current sensing device; analyze the second current signal to determine a second voltage droop value based on the second current signal; and operate the second DC power supply to reduce a second voltage output of the second DC power supply by the second voltage droop value; the system being characterised by each generator controller (202a, 202b) determines the respective voltage droop value voltage independent of the current value measured for the other generator and independent of the current of the entire system load. a first direct current power supply comprising a first generator and a first rectifier circuit; a second DC power supply comprising a second generator and a second rectifier, wherein a first output of the first DC power supply and a second output of the second DC power supply are commonly coupled at a common bus point; a first current sensing device coupled between the first output of the first DC power supply and the common bus point; a first generator controller configured to: receive a first current signal from the first current sensing device; analyze the first current signal to determine a first voltage droop value based on the first current signal; and receive a first current signal from the first current sensing device; analyze the first current signal to determine a first voltage droop value based on the first current signal; and operate the first DC power supply to reduce a first voltage output of the first DC power supply by the first voltage droop value; and a second current sensing device coupled between a second output of the second DC power supply and the common bus point; and a second generator controller configured to: receive a second current signal sensed from the second current sensing device; analyze the second current signal to determine a second voltage droop value based on the second current signal; and operate the second DC power supply to reduce a second voltage output of the second DC power supply by the second voltage droop value; the system being characterised by each generator controller (202a, 202b) determines the respective voltage droop value voltage independent of the current value measured for the other generator and independent of the current of the entire system load. receive a second current signal sensed from the second current sensing device; analyze the second current signal to determine a second voltage droop value based on the second current signal; and operate the second DC power supply to reduce a second voltage output of the second DC power supply by the second voltage droop value; the system being characterised by each generator controller (202a, 202b) determines the respective voltage droop value voltage independent of the current value measured for the other generator and independent of the current of the entire system load.