Patents by Inventor Peda V. Medagam

Peda V. Medagam 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: 20210083592
    Abstract: Briefly, a voltage doubling variable frequency drive includes an active converter connected to a DC bus that is connected to a first inverter that converts DC power to variable frequency, three-phase AC power, and variable frequency, three-phase AC power to DC power, and to a second inverter that converts DC power to three-phase AC sine wave power. The converter converts single-phase AC power to DC power and DC power to single-phase AC power and maintains a selected voltage on the DC bus. The converter has an active rectifier and a controller that drives the rectifier with a pulse width modulation according to a switching scheme that switches the rectifier according to an adaptive hysteresis control to maintain constant switching.
    Type: Application
    Filed: September 14, 2019
    Publication date: March 18, 2021
    Inventors: Peda V Medagam, Jack Yang, Nicholas R Kingsbury
  • Patent number: 10931205
    Abstract: A phase converter that converts single phase AC electric power to balanced three phase AC power. Two input terminals are connectable to a single phase AC power source, and connect directly to two output terminals of the converter. The phase converter has a storage capacitor, three active half bridge modules connected to the storage capacitor and a controller. Two modules connect to the input terminals and charge the storage capacitor. The other module connects to a third output terminal. The controller switches the module connected to the third output terminal and one of the other modules to generate and shape a second phase and a resultant third phase.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: February 23, 2021
    Assignee: Phase Technologies, LLC
    Inventors: Peda V Medagam, Jack Yang
  • Publication number: 20190252991
    Abstract: A phase converter that converts single phase AC electric power to balanced three phase AC power. Two input terminals are connectable to a single phase AC power source, and connect directly to two output terminals of the converter. The phase converter has a storage capacitor, three active half bridge modules connected to the storage capacitor and a controller. Two modules connect to the input terminals and charge the storage capacitor. The other module connects to a third output terminal. The controller switches the module connected to the third output terminal and one of the other modules to generate and shape a second phase and a resultant third phase.
    Type: Application
    Filed: April 19, 2019
    Publication date: August 15, 2019
    Applicant: Phase Technologies LLC
    Inventors: Peda V Medagam, Jack Yang
  • Patent number: 10333420
    Abstract: A phase converter that converts single phase AC electric power to balanced three phase AC power. Two input terminals are connectable to a single phase AC power source, and connect directly to two output terminals of the converter. The phase converter has a storage capacitor, three active half bridge modules connected to the storage capacitor and a controller. Two modules connect to the input terminals and charge the storage capacitor. The other module connects to a third output terminal. The controller switches the module connected to the third output terminal and one of the other modules to generate and shape a second phase and a resultant third phase.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: June 25, 2019
    Assignee: Phase Technologies, LLC
    Inventors: Peda V. Medagam, Jack Yang
  • Publication number: 20190131881
    Abstract: A phase converter that converts single phase AC electric power to balanced three phase AC power. Two input terminals are connectable to a single phase AC power source, and connect directly to two output terminals of the converter. The phase converter has a storage capacitor, three active half bridge modules connected to the storage capacitor and a controller. Two modules connect to the input terminals and charge the storage capacitor. The other module connects to a third output terminal. The controller switches the module connected to the third output terminal and one of the other modules to generate and shape a second phase and a resultant third phase.
    Type: Application
    Filed: October 30, 2017
    Publication date: May 2, 2019
    Applicant: Phase Technologies, LLC
    Inventors: Peda V. Medagam, Jack Yang
  • Patent number: 9871462
    Abstract: A regenerative variable frequency drive includes an active converter connected to a DC bus that is connected to a first inverter that converts DC power to variable frequency, three phase AC power, and variable frequency, three phase AC power to DC power, and to a second inverter that converts DC power to three phase AC sine wave power. The converter converts single phase AC power to DC power and DC power to single phase AC power, and maintains a selected voltage on the DC bus. The converter has an active rectifier and a controller that drives the rectifier with a pulse width modulation according to a hybrid voltage switching scheme that switches the rectifier according to a unipolar voltage switching scheme through most of each cycle and switches the rectifier according to a bipolar voltage switching scheme around each zero crossing.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: January 16, 2018
    Assignee: Phase Technologies, LLC
    Inventors: Peda V. Medagam, Theodore Clifton Pettyjohn, Jack Yang
  • Publication number: 20170170743
    Abstract: A regenerative variable frequency drive includes an active converter connected to a DC bus that is connected to a first inverter that converts DC power to variable frequency, three phase AC power, and variable frequency, three phase AC power to DC power, and to a second inverter that converts DC power to three phase AC sine wave power. The converter converts single phase AC power to DC power and DC power to single phase AC power, and maintains a selected voltage on the DC bus. The converter has an active rectifier and a controller that drives the rectifier with a pulse width modulation according to a hybrid voltage switching scheme that switches the rectifier according to a unipolar voltage switching scheme through most of each cycle and switches the rectifier according to a bipolar voltage switching scheme around each zero crossing.
    Type: Application
    Filed: December 9, 2016
    Publication date: June 15, 2017
    Applicant: Phase Technologies, LLC
    Inventors: Peda V. Medagam, Theodore Clifton Pettyjohn, Jack Yang
  • Patent number: 8941340
    Abstract: A regenerative variable frequency drive includes an active converter connected to an inverter. The converter has a filter capacitor, an inductor, two half bridges, bus bars that connect to the inverter and bus capacitors. The converter converts single phase AC power to DC power and DC power to single phase AC power, boosts the AC power, reduces input line harmonics, maintains input current in phase with utility voltage in order to achieve near unity power factor, and maintains constant DC voltage between the bus bars.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: January 27, 2015
    Inventors: Larry G. Meiners, Theodore Clifton Pettyjohn, Jack Yongchen Yang, Peda V. Medagam