The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2024
Filed:
Jun. 08, 2021
Hitachi Energy Ltd, Zürich, CH;
Ying-Jiang Hafner, Ludvika, SE;
Hitachi Energy Ltd, Zürich, CH;
Abstract
An energy supporting device for a high voltage direct current, HVDC, transmission system is provided. The HVDC transmission system includes a first HVDC converter and a second HVDC converter connected to each other via an HVDC link. The energy supporting device comprises a plurality of cells configured to be connected in series to the HVDC link, a resistor electrically connected between the plurality of cells and an electrical reference potential, and a bypass switch configured to allow the resistor to be bypassed. A cell includes a full-bridge arrangement of power switches and an energy storage device electrically connected to the full-bridge arrangement. The energy supporting device is configured to be operated in: a charging mode, in which the bypass switch is in a closed state for allowing the resistor to be bypassed, and in which the energy storage device of at least one cell of the plurality of cells is receiving electrical energy from the HVDC link, and in a dissipation mode, in which the bypass switch is in an open state for allowing the resistor to dissipate electrical energy from the HVDC link, and in which the energy storage devices of the plurality of cells are bypassed, and in an energy release mode, in which the energy storage device of at least one cell of the plurality of cells is discharging electrical energy to the HVDC link.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile