H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 7/155 (2006.01) H02J 3/36 (2006.01) H02M 3/158 (2006.01) H02M 7/217 (2006.01)
Patent
CA 2156688
A converter connection for conversion between alternating voltage and direct voltage, for connection to a power network (DCN) having a neutral pole (P0) and at lest one pole (P+,P-) energized by direct voltage in relation to the neutral pole, comprises a voltage-source converter (VC) with two direct- voltage terminals (DP, DM). At least one of the direct-voltage terminals of the converter is connected by means of an elec- tric pole conductor (W1, W12, W11, W21, W2) to at least one of the poles of the power network which are energized by direct voltage. The converter connection further comprises two valves (V7, V8) mutually series-connected at a common point of connection (J), each of said valves comprising a gate turn-off semiconductor valve (T1) and a diode valve (D1) connected thereto in anti-parallel connection, said series connection being connected between the direct-voltage terminals of the converter, and a reactor (SL) with a first terminal (T1) connected to the connection point and a second terminal (T2) which communicates with the neutral pole in an electrically conducting connection. The converter connection may be accommodated in a converter station (SR1 and SR2, respecti- vely) included in an installation for transmission of high- voltage direct current.
Abb Ab
Asea Brown Boveri Ab
Robic
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