| 摘要 |
A control and processing module (170) and a method of controlling operation of a thyristor-based interface arrangement (100) configured to electrically couple an Alternating Current (AC) power system (110) with a Direct Current (DC) power system (120), and to convert DC power to AC power, or vice versa, are disclosed. The interface arrangement (100) comprises a plurality of converter valves (131-136, 141-143), each comprising at least one thyristor (T1x, T1y; T2x, T2y;...; T9x, T9y), and a plurality of multi-level converter cells (WS1, WS2). By means of controlling the firing angle of the at least one thyristor (T1x, T1y; T2x, T2y;...; T9x, T9y) of each converter valve (131-136, 141-143), shape and amplitude of any voltage contribution to the AC waveform provided by the plurality of multi-level converter cells (WS1, WS2) may be adjusted, and so that reactive power exchange between the interface arrangement (100) and the AC power system (110) may be controlled. A system comprising the interface arrangement (100) and the control and processing module (170) is also disclosed. |
