Method and apparatus to reduce common mode voltages applied...

Method and arrangement for controlling a high voltage d-c transm

Method and arrangement in connection with half-controlled...

Method and circuit arrangemeant for operating a high voltage dir

Method and circuit arrangement for adapting the intermediate...

Method and circuit for controlling a rectifier

Method and control arrangement for DC transmission, and a contro

Method and control arrangement for DC transmission, and a contro

Method and control system for voltage control at a converter...

Method and device for compensation of unbalance in a series comp

Method and device for control of a series-compensated converter

Method and device for control of a series-compensated converter

Method and device for control of an installation for transmissio

Method and device for controlling a four-dimensional vector for

Method and device for controlling power supply

Method and device for rapidly determining a synchronous referenc

Method and regulating device for controlling high-voltage direct

Method and switching arrangement for regulation of a two-dimensi

Method for controlling a H.V.D.C. power transmission plant and a

Method for controlling operating conditions of D.C. transmission