HVDC tapping using soft switching techniques |
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| Authors: | M Aredes C Portela E H Watanabe |
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| Affiliation: | (1) EE/Department of Electrical Engineering, UFRJ – Federal University of Rio de Janeiro, PO Box 68504, 21945-970 Rio de Janeiro RJ, Brazil Fax: +55 21 290-6626; e-mail: aredes@coe.ufrj.br, BR;(2) COPPE/Department of Electrical Engineering UFRJ – Federal University of Rio de Janeiro, PO Box 68504, 21945-970 Rio de Janeiro RJ, Brazil, BR |
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| Abstract: | Contents Soft switching techniques have been applied to develop a novel dc/dc power converter for feeding small loads (under 5 MW)
with low cost and high reliability, from HVDC transmission lines. This dc/dc converter is connected in series with a pole
of the HVDC transmission line. It drains energy to a dc capacitor through an air-core transformer. From this dc capacitor,
a voltage-source converter may be directly connected to supply ac loads. This HVDC tap can supply high quality ac power to
isolated areas, with or without ac power generation. The controller of the HVDC tap is independent from the master control
of the HVDC link. It does not need any communication channel to the control of the main HVDC converter stations. Simulation
results have revealed that the proposed HVDC tap can be a very good option for feeding small loads along the HVDC transmission
line. It generates high quality ac voltage and is extremely robust.
Received: 26 July 2000 |
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