Patents by Inventor PRASANTH THUMMALA

PRASANTH THUMMALA 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).

  • Publication number: 20250158530
    Abstract: A multiple-port bidirectional converter is provided. The multiple-port bidirectional converter includes a transformer, a primary full-bridge converter, a first high voltage (HV) power converting unit, a second HV power converting unit, a first low voltage (LV) power converting unit, a second LV power converting unit, a full-bridge diode rectifier, and a full-bridge inverter. The transformer includes a core, one primary winding and five secondary windings. The primary full-bridge converter is coupled to the first primary winding and receives an input voltage. The first/second HV power converting unit, coupled to the first/second secondary winding, outputs a first/second high DC voltage to a first/second HV battery. The first/second LV power converting unit, coupled to the third/fourth secondary winding, outputs a first/second low DC voltage to a first/second LV battery. The full-bridge diode rectifier is coupled to the fifth secondary winding and the full-bridge diode rectifier to output an AC output voltage.
    Type: Application
    Filed: May 21, 2024
    Publication date: May 15, 2025
    Inventors: Xuan Bac NGUYEN, Prasanth Thummala, Van Tien Le, Cindy Wan Yi Goh
  • Publication number: 20250157719
    Abstract: A transformer is provided. The transformer includes a core, a primary winding, and a number of secondary windings. The core has a first leg and a second leg. At least part of the primary winding is wound around the first leg of the core. The primary winding includes a first sub-primary winding. This first sub-primary winding comprises a first auxiliary sub-primary winding and a second auxiliary sub-primary winding. Both the first auxiliary sub-primary winding and the second auxiliary sub-primary winding are bifilar wound, and they are connected in parallel. Some of the secondary windings are wound around the first leg of the core, and some of the secondary windings are wound around the second leg of the core.
    Type: Application
    Filed: March 6, 2024
    Publication date: May 15, 2025
    Inventors: Prasanth THUMMALA, Xuan Bac Nguyen, Jin Kang Lam, Cindy Wan Yi Goh
  • Publication number: 20230420181
    Abstract: A transformer and an assembly method thereof are provided. The transformer includes a hollow bobbin, two magnetic cores, a primary winding, a plurality of first secondary windings and a plurality of second secondary windings. The two magnetic cores are inserted into the hollow bobbin. The primary winding is wound around the hollow bobbin. The first secondary windings and the second secondary windings surround the primary winding. The first secondary windings and the second secondary windings are alternately arranged around the primary winding.
    Type: Application
    Filed: June 24, 2022
    Publication date: December 28, 2023
    Inventors: Prasanth THUMMALA, Chun-Hwa SEE
  • Patent number: 10742127
    Abstract: An apparatus includes power blocks. Each power block includes converter modules. Each converter module includes a positive and a negative bidirectional converter and a battery module. The bidirectional converters are connected to the battery module and outputs are connected in parallel. Paralleled positive bidirectional converters are connected in series between a positive connection and a neutral connection and the paralleled negative bidirectional converters of each power block are connected in series between the neutral connection and a negative connection. A DC-link controller controls a positive output voltage between the positive and neutral connections to follow a positive voltage reference and controls a negative output voltage between the neutral and negative connections to follow a negative voltage reference.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: August 11, 2020
    Assignee: Utah State University
    Inventors: Baljit S. Riar, Regan A. Zane, Prasanth Thummala, Weilun Chen, Muhammad Muneeb Ur Rehman
  • Publication number: 20200014306
    Abstract: An apparatus includes power blocks. Each power block includes converter modules. Each converter module includes a positive and a negative bidirectional converter and a battery module. The bidirectional converters are connected to the battery module and outputs are connected in parallel. Paralleled positive bidirectional converters are connected in series between a positive connection and a neutral connection and the paralleled negative bidirectional converters of each power block are connected in series between the neutral connection and a negative connection. A DC-link controller controls a positive output voltage between the positive and neutral connections to follow a positive voltage reference and controls a negative output voltage between the neutral and negative connections to follow a negative voltage reference.
    Type: Application
    Filed: July 3, 2018
    Publication date: January 9, 2020
    Inventors: BALJIT S. RIAR, REGAN A. ZANE, PRASANTH THUMMALA, WEILUN CHEN, MUHAMMAD MUNEEB UR REHMAN