CONTROL METHOD FOR DIRECT CURRENT TRANSMISSION BY MEANS OF SEVERAL POWER CONVERTERS

摘要

A method is provided for controlling converters in the field of power distribution and transmission. At least three converters which can be controlled as rectifiers or inverters and are connected to one another via a DC power supply system are controlled without the control method requiring a hierarchical structure or control separation. Each rectifier control system forms a rectifier difference DC voltage and a rectifier difference direct current and controls an associated rectifier such that the sum of the difference DC voltage and the difference direct current is minimized. Each inverter control system forms an inverter difference DC voltage and an inverter difference direct current and controls an associated inverter such that the difference between the inverter difference direct current and the inverter difference DC voltage is minimized.