Static convertor plant
AssigneeASEA Aktiebolag
InventorSven Ivner
Life of this patent
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Abstract
In a convertor plant for connection between a DC network and an AC network which includes at least one convertor group formed of two convertors with AC terminals for connection to the AC network and DC terminals for connection to the DC network, a reactor is connected on the DC side of one of the convertors and switches are provided for alternatively connecting the DC terminals of the convertor to the DC network in parallel with the other convertor or for connecting the reactor between the DC terminals of the convertor. Preferably the plant includes two or more convertor groups, each of which is provided with a transformer for connection to the AC network, and the transformers have different circuit angles for increasing the resulting pulse number of the plant.
Claims4
Convertor plant for connection between a DC network and an AC network and comprising at least one convertor group, each said convertor group comprising at least two convertors with AC terminals for connection to the AC network and with DC terminals for connection to the DC network, at least one of said convertors in said at least one connector group including a reactor connected on its DC side and with switching means for alternatively connecting the DC terminals of said at least one convertor to the DC network in parallel with the other convertors or connecting said reactor between the DC terminals of said at least one convertor, control means for controlling said switching means in dependence on the load current of said convertors.
Dependencies are inferred from the claim text.