Patents by Inventor Levy Costa

Levy Costa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Medium-frequency transformer-based double-isolated auxiliary supply for medium-voltage DC/DC converters
    Patent number: 12712460
    Abstract: A converter for transferring power from a medium-voltage, MV, to a low-voltage, LV, side is provided. The converter includes at least one DC/AC cell with a MV AC terminal configured for generating an AC voltage from a MV DC voltage, and includes at least one AC/DC cell with a LV AC terminal configured for generating a DC voltage from a LV AC voltage. The converter has a magnetic core with a LV winding, and a LV terminal connected to the LV AC terminal, additionally with a magnetic core with a MV winding, and a MV terminal connected to the MV AC terminal. The converter includes an auxiliary unit with an auxiliary winding, and an auxiliary terminal connected to control circuits for operating the MV DC/AC cell. Galvanic insulation between the LV and the MV winding and the auxiliary winding is configured to withstand the Basic Insulation Level of the converter.
    Type: Grant
    Filed: September 18, 2024
    Date of Patent: August 18, 2026
    Assignees: ABB Schweiz AG, ABB E-Mobility B.V.
    Inventors: Daniel Rothmund, Francisco Canales, David Baumann, Daniel Christen, Levy Costa
  • MEDIUM-FREQUENCY TRANSFORMER-BASED DOUBLE-ISOLATED AUXILIARY SUPPLY FOR MEDIUM-VOLTAGE DC/DC CONVERTERS
    Publication number: 20250096691
    Abstract: A converter for transferring power from a medium-voltage, MV, to a low-voltage, LV, side is provided. The converter includes at least one DC/AC cell with a MV AC terminal configured for generating an AC voltage from a MV DC voltage, and includes at least one AC/DC cell with a LV AC terminal configured for generating a DC voltage from a LV AC voltage. The converter has a magnetic core with a LV winding, and a LV terminal connected to the LV AC terminal, additionally with a magnetic core with a MV winding, and a MV terminal connected to the MV AC terminal. The converter includes an auxiliary unit with an auxiliary winding, and an auxiliary terminal connected to control circuits for operating the MV DC/AC cell. Galvanic insulation between the LV and the MV winding and the auxiliary winding is configured to withstand the Basic Insulation Level of the converter.
    Type: Application
    Filed: September 18, 2024
    Publication date: March 20, 2025
    Inventors: Daniel Rothmund, Francisco Canales, David Baumann, Daniel Christen, Levy Costa
  • Power Supply System for Bidirectional Energy Flow
    Publication number: 20230050057
    Abstract: A power supply system includes a power feeding system for transforming an AC medium-voltage power signal from a medium-voltage grid into a low-voltage power signal for feeding an electricity consumer site. The power supply system further includes a low-voltage multiphase converter for transforming a low-voltage signal into a low-voltage multiphase signal. The multiphase converter is arranged antiparallel to the power feeding system, and an LV/MV multiphase transformer for transforming the low-voltage multiphase signal into an output-signal that is conformant to the AC medium-voltage power signal.
    Type: Application
    Filed: October 28, 2022
    Publication date: February 16, 2023
    Applicant: ABB Schweiz AG
    Inventors: Uwe Drofenik, Thomas Bernhard Gradinger, Francisco Canales, Gabriel Ignacio Ortiz, Ki-Bum Park, Daniel Rothmund, Levy Costa