Patent ID: 11962146
Assignee: KATHOLIEKE UNIVERSITEIT LEUVEN
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method of controlling a voltage in a bipolar DC power system comprising a positive conductor, a neutral conductor and negative conductor,
wherein a positive pole-to-neutral voltage is a voltage between the positive conductor and the neutral conductor, and a negative pole-to-neutral voltage is a voltage between the negative conductor and the neutral conductor, using a system for controlling the bipolar DC power system,
wherein the system for controlling comprises a first voltage converter configured to control a sum or difference of the positive pole-to-neutral voltage and the negative pole-to-neutral voltage; and
a second voltage converter, wherein, if the first voltage converter is configured to control the sum of the positive pole-to-neutral voltage and the negative pole-to-neutral voltage, then the second voltage converter is configured to control the positive pole-to-neutral voltage, the negative pole-to-neutral voltage, or the difference of the positive pole-to-neutral voltage and the negative pole-to-neutral voltage, and
wherein if the first voltage converter is configured to control the difference of the positive pole-to-neutral voltage and the negative pole-to-neutral voltage, then the second voltage converter is configured to control the positive pole-to-neutral voltage, the negative pole-to-neutral voltage, or the sum of the positive pole-to-neutral voltage and the negative pole-to-neutral voltage,
wherein controlling a voltage comprises controlling the voltage as a function of the respective output current or power,
the method comprising per converter:
receiving a voltage value in the system for controlling;
receiving an output current or power value in the system for controlling;
determining a setpoint voltage in dependence upon the output current or power value; and
maintaining the voltage value at the setpoint voltage.