MUMBAI, India, March 14 -- Intellectual Property India has published a patent application (202517133608 A) filed by Hyosung Heavy Industries Corporation, Seoul, Republic of Korea, on Dec. 30, 2025, for 'hvdc system.'

Inventor(s) include Ku, Nam Joon; Park, Hong Bean; Lee, Doo Young; Jung, Hong Ju; and Park, Seong Won.

The application for the patent was published on March 13, under issue no. 11/2026.

According to the abstract released by the Intellectual Property India: "The present invention provides an HVDC system in which a DC terminal of a modular multilevel converter (MMC) is formed into a bipolar structure. The HVDC system of the present invention comprises: a first transformer having a primary side connected to an AC grid side; a p...