Title:
A PLANT FOR TRANSMITTING ELECTRIC POWER, INCLUDING VSC-CONVERTER AND DC/DC-CONVERTER
Document Type and Number:
WIPO Patent Application WO1998043336
Kind Code:
A3
Abstract:
PCT No. PCT/SE98/00502 Sec. 371 Date Sep. 20, 1999 Sec. 102(e) Date Sep. 20, 1999 PCT Filed Mar. 20, 1998 PCT Pub. No. WO98/43336 PCT Pub. Date Oct. 1, 1998A plant for transmitting electric power comprises at least one VSC-converter (1). It comprises also at least one DC/DC-converter (33, 34) having two current valves connected in series and an inductance connected to a midpoint therebetween. The DC/DC-converter is through said inductance connected to a first of the poles of the direct voltage side of the converter and through a first output terminal connected to one of the current valves to the second of the poles so as to obtain an unbalanced step-up-transformation of the direct voltage between the two poles while obtaining a potential having a higher value on the second output terminal (27) of the DC/DC-converter connected to the second current valve than on said first output terminal (28).
Inventors:
ERIKSSON KJELL (SE)
ASPLUND GUNNAR (SE)
ASPLUND GUNNAR (SE)
Application Number:
PCT/SE1998/000502
Publication Date:
December 23, 1998
Filing Date:
March 20, 1998
Export Citation:
Assignee:
ASEA BROWN BOVERI (SE)
ERIKSSON KJELL (SE)
ASPLUND GUNNAR (SE)
ERIKSSON KJELL (SE)
ASPLUND GUNNAR (SE)
International Classes:
H02J5/00; H02J3/36; H02M3/155; H02M3/158; H02M7/219; (IPC1-7): H02J5/00; H02J3/36; H02M3/155
Domestic Patent References:
| WO1997002639A1 | 1997-01-23 |
Foreign References:
| US5561597A | 1996-10-01 | |||
| US3968419A | 1976-07-06 | |||
| US5535113A | 1996-07-09 | |||
| US4259713A | 1981-03-31 | |||
| US4274043A | 1981-06-16 | |||
| SE504522C2 | 1997-02-24 |
Other References:
STUDENTLITTERATUR, 1993, (Lund), KJELD THORBORG, "Power Electronics-in Theori and Practice", pages 238-240.
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