| 主权项 |
1. A power electronic converter for use in high voltage direct current power transmission and reactive power compensation comprising a plurality of switching elements interconnecting in use a DC network and one or more AC networks, the plurality of switching elements being controlled in use to form one or more short circuits within the power electronic converter so as to define one or more primary current flow path including a respective one of the AC networks and the power electronic converter and bypassing the DC network, said power electronic converter further including a plurality of converter limbs, each converter limb including first and second DC terminals for connection in use to the DC network and an AC terminal for connection in use to an AC network, each converter limb defining first and second limb portions, each limb portion including an electronic block connected in series between a respective one of the first and second DC terminals and the respective AC terminal, each electronic block including at least one switching element, the or each switching element of each electronic block being controllable in use to switch the respective limb portion in and out of circuit to facilitate the AC to DC power conversion process, each electronic block including at least one primary switching element, the or each primary switching element being connected in series between the respective one of the first and second DC terminals and the respective AC terminal, each electronic block further including at least one chain-link converter and at least one primary switching element connected in series with the or each chain-link converter. |
