Patents by Inventor John Dorrenbacher

John Dorrenbacher 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).

  • Patent number: 11888311
    Abstract: This disclosure describes a non-dissipative snubber circuit configured to boost a voltage applied to a load after the load's impedance rises rapidly. The voltage boost can thereby cause more rapid current ramping after a decrease in power delivery to the load which results from the load impedance rise. In particular, the snubber can comprise a combination of a capacitive element, two inductive elements, and three switches, where a duty cycle of two of the three switches controls the voltage boost. The snubber can be arranged between a DC power supply and a switching circuit configured to generate a pulsed waveform for provision to the load.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: January 30, 2024
    Assignee: Advanced Energy Industries, Inc.
    Inventors: Faleh Alskran, John Dorrenbacher
  • Publication number: 20230064671
    Abstract: This disclosure describes a non-dissipative snubber circuit configured to boost a voltage applied to a load after the load's impedance rises rapidly. The voltage boost can thereby cause more rapid current ramping after a decrease in power delivery to the load which results from the load impedance rise. In particular, the snubber can comprise a combination of a capacitive element, two inductive elements, and three switches, where a duty cycle of two of the three switches controls the voltage boost. The snubber can be arranged between a DC power supply and a switching circuit configured to generate a pulsed waveform for provision to the load.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 2, 2023
    Inventors: Faleh Alskran, John Dorrenbacher
  • Publication number: 20200313567
    Abstract: An apparatus utilizing additive interleaved switchmode (PWM) power conversion stages, having minimal or no output filter, to achieve high bandwidth or even ideally instantaneous power conversion. The additive process may involve voltage stacking of isolated PWM converters, which are interleaved in time, or may involve a single input power supply and inductively combining output currents of PWM power converters interleaved in time, with either additive circuit having minimal or no output filtering. This circuit may overcome limitations for the frequency of feedback control loops once thought to be physical limitations, such as, fundamental switching frequency, output filter delay and the Nyquist criteria.
    Type: Application
    Filed: April 13, 2020
    Publication date: October 1, 2020
    Inventors: Robert M. Porter, JR., John Dorrenbacher, Faleh Alskran
  • Patent number: 10658945
    Abstract: An apparatus utilizing additive interleaved switchmode (PWM) power conversion stages, having minimal or no output filter, to achieve high bandwidth or even ideally instantaneous power conversion. The additive process may involve voltage stacking of isolated PWM converters, which are interleaved in time, or may involve a single input power supply and inductively combining output currents of PWM power converters interleaved in time, with either additive circuit having minimal or no output filtering. This circuit may overcome limitations for the frequency of feedback control loops once thought to be physical limitations, such as, fundamental switching frequency, output filter delay and the Nyquist criteria.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: May 19, 2020
    Assignee: Advanced Energy Industries, Inc.
    Inventors: Robert M. Porter, Jr., John Dorrenbacher
  • Publication number: 20200153360
    Abstract: An apparatus utilizing additive interleaved switchmode (PWM) power conversion stages, having minimal or no output filter, to achieve high bandwidth or even ideally instantaneous power conversion. The additive process may involve voltage stacking of isolated PWM converters, which are interleaved in time, or may involve a single input power supply and inductively combining output currents of PWM power converters interleaved in time, with either additive circuit having minimal or no output filtering. This circuit may overcome limitations for the frequency of feedback control loops once thought to be physical limitations, such as, fundamental switching frequency, output filter delay and the Nyquist criteria.
    Type: Application
    Filed: July 9, 2019
    Publication date: May 14, 2020
    Inventors: Robert M. Porter, JR., John Dorrenbacher
  • Patent number: 10447174
    Abstract: An apparatus utilizing additive interleaved switchmode (PWM) power conversion stages, having minimal or no output filter, to achieve high bandwidth or even ideally instantaneous power conversion. The additive process may involve voltage stacking of isolated PWM converters, which are interleaved in time, or may involve a single input power supply and inductively combining output currents of PWM power converters interleaved in time, with either additive circuit having minimal or no output filtering. This circuit may overcome limitations for the frequency of feedback control loops once thought to be physical limitations, such as, fundamental switching frequency, output filter delay and the Nyquist criteria.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: October 15, 2019
    Assignee: ADVANCED ENERGY INDUSTRIES, INC.
    Inventors: Robert M. Porter, Jr., John Dorrenbacher
  • Patent number: 8330432
    Abstract: A system, method, and apparatus for stabilizing interactions between an electrical generator and a nonlinear load are described. One illustrative embodiment includes an impedance element that is coupled to an output of the generator and a power source coupled to the impedance element. The power source applies power to, or across, the impedance element so as to reduce energy loss that would ordinarily occur due to energy dissipation by way of the impedance element. In many variations, the power source operates within a defined bandwidth so that a stabilizing effect is achieved outside of this bandwidth.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: December 11, 2012
    Assignee: Advanced Energy Industries, Inc
    Inventors: Gideon Van Zyl, John Dorrenbacher
  • Publication number: 20110148303
    Abstract: A system, method, and apparatus for stabilizing interactions between an electrical generator and a nonlinear load are described. One illustrative embodiment includes an impedance element that is coupled to an output of the generator and a power source coupled to the impedance element. The power source applies power to, or across, the impedance element so as to reduce energy loss that would ordinarily occur due to energy dissipation by way of the impedance element. In many variations, the power source operates within a defined bandwidth so that a stabilizing effect is achieved outside of this bandwidth.
    Type: Application
    Filed: December 22, 2009
    Publication date: June 23, 2011
    Inventors: Gideon Van Zyl, John Dorrenbacher