Three wire DC transmission circuit with modulated pole

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United States of America Patent

PATENT NO 9893649
SERIAL NO

15333136

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Abstract

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The method of converting high voltage AC lines into bipolar high voltage DC systems makes use of the three transmission lines (referred to as the positive pole, the negative pole, and the modulating pole) in an existing high voltage AC system as transmission lines in a bipolar high voltage DC system. When current from the power source is up to the thermal current limit of the transmission lines, the transmission lines operate in two-wire mode, where current is delivered in the positive pole and returned in the negative pole, the modulating pole being open. When power source current exceeds the thermal current limit, operation is in three-wire mode, alternating for predetermined periods between parallel configuration of the positive pole and the modulating pole to divide current for delivery to the load, and parallel configuration of the negative pole and the modulating pole, dividing the return current.

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Patent Owner(s)

Patent OwnerAddress
QATAR FOUNDATION FOR EDUCATION SCIENCE AND COMMUNITY DEVELOPMENTP O BOX 5825 EDUCATION CITY - DOHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abdel-Khalik, Ayman S Houston, US 1 1
Ahmed, Shehab Doha, QA 11 30
Elserougi, Ahmed A Doha, QA 2 2
Massoud, Ahmed M Doha, QA 2 2

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