Patents Assigned to VOLTSERVER INC.
  • Publication number: 20210063447
    Abstract: Transmission-line voltage measurements in a digital-electricity power system are validated by acquiring a series of transmission-line voltage measurements during a sample period when a transmitter-disconnect device is in a non-conducting state. A numerical analysis is performed to determine a point in time at which AC components in the transmission line have diminished and at which the primary change in the transmission-line voltage measurement values is due to DC decay. A receiver acquires a series of receiver-voltage measurements during the same sample period; and a numerical analysis is performed on the receiver-voltage measurements to determine the point in time at which the AC components have diminished and where the primary change in the transmission-line voltage measurement values is due to DC decay. The transmitter-disconnect device is then placed in a non-conducting state based on an evaluation of those measurements.
    Type: Application
    Filed: August 28, 2020
    Publication date: March 4, 2021
    Applicant: VoltServer, Inc.
    Inventor: Stephen S. Eaves
  • Publication number: 20200295559
    Abstract: A digital power distribution system includes a source sensor configured to provide feedback that includes a signal indicative of voltage across the source terminals; a source controller configured to receive the feedback from the source sensor and to generate a control signal that substantially increases or decreases impedance between the power source and the source terminals; a non-linear load configured such that the electrical current it draws from the load terminals drops by at least an order of magnitude below a non-zero voltage threshold; reduced capacitance on the load side for storing charge and discharging that charge during the sample period, wherein the reduced capacitance is reduced to a level for providing the at-least-an-order-of-magnitude-lower electrical current drawn by the non-linear load below the voltage threshold; and a source disconnect device responsive to the control signal from the source controller.
    Type: Application
    Filed: October 5, 2018
    Publication date: September 17, 2020
    Applicant: VoltServer, Inc.
    Inventors: Stephen Spencer Eaves, Stanley Mlyniec
  • Patent number: 10714930
    Abstract: A power-distribution system can detect a transmission-line electrical fault, and the power source can be electrically isolated from the transmission line before a human or equipment is substantially harmed or damaged. A controller on the source side is responsive to one or more sensors that provide a signal indicative of the voltage across the transmitter side of the transmission line. A source-disconnect device operable by the controller electrically isolates the source from the transmission line. A signal-generator circuit is configured to superimpose a higher-wavelength carrier waveform with the source-output waveform on the transmission line. The controller determines the normal impedance of the transmission line from measurement and detects a transmission-line fault, as indicated by a change in carrier waveform reflections or energy content of the carrier waveform and generates a command to open the source-disconnect device upon detection of the fault.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: July 14, 2020
    Assignee: VoltServer, Inc.
    Inventors: Jeffrey Weiss, Stephen S. Eaves, Likhita Ravuri
  • Patent number: 10541543
    Abstract: The disclosed charging system has multiple charging ports emanating from a central digital power transmitter to charge a plurality of battery packs. The system comprises a centralized bulk power converter to produce a first DC voltage and multiple additive power converters. One additive power converter is assigned to each charger port. The output of each charging port is transmitted in digital power format to a receiver local to each battery pack. The receiver converts the digital power to conventional analog DC power for charging the battery packs. The bulk converter provides the majority of the power needed to charge all the battery packs simultaneously, while the additive power converters adjust for the individual characteristics of each battery pack.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: January 21, 2020
    Assignee: VoltServer, Inc.
    Inventor: Stephen S. Eaves
  • Patent number: 10468879
    Abstract: A digital power distribution system comprises a digital power transmitter configured to accept analog electrical power and to convert the analog electrical power into discrete energy packets for distribution across a common set of transmission lines; a plurality of digital power receivers with parallel connections to the transmission lines, wherein the digital power receivers are configured to accept the energy packets from the digital power transmitter and to convert the packets back into analog electrical power for use by the load device; a load device electrically coupled with at least one of the digital power receivers and configured to receive analog electrical power from the digital power receiver with which it is electrically coupled; and a termination module with parallel connections to the transmission lines, wherein the termination module includes at least a capacitor configured to establish the characteristic capacitance of the transmission lines.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: November 5, 2019
    Assignee: VoltServer, Inc.
    Inventor: Stephen Spencer Eaves
  • Publication number: 20180313886
    Abstract: The integrity of transmission-line voltage measurements in a digital-electricity power system in the presence of line-voltage disturbances during a sample period is ensured via detection or prevention by (a) acquiring at least three measurements of transmission-line voltage, performing numerical analysis on the measurements to produce a polynomial function, and estimating accuracy of the polynomial function based on magnitude of variance of the individual measurements; (b) applying a negative or positive bias to the transmission line during the sample period and acquiring voltage measurements to determine a rate of voltage change with the bias applied; (c) shifting a start time of a first sample period on a first transmission line in reference to a second sample period on a second transmission line to reduce overlap of sample periods across both transmission lines; and/or (d) synchronizing start times of respective sample periods on first and second transmission lines.
    Type: Application
    Filed: April 26, 2018
    Publication date: November 1, 2018
    Applicant: VoltServer, Inc.
    Inventors: Stanley Mlyniec, Jonathan J. Casey, Stephen S. Eaves
  • Publication number: 20180123360
    Abstract: The disclosed charging system has multiple charging ports emanating from a central digital power transmitter to charge a plurality of battery packs. The system comprises a centralized bulk power converter to produce a first DC voltage and multiple additive power converters. One additive power converter is assigned to each charger port. The output of each charging port is transmitted in digital power format to a receiver local to each battery pack. The receiver converts the digital power to conventional analog DC power for charging the battery packs. The bulk converter provides the majority of the power needed to charge all the battery packs simultaneously, while the additive power converters adjust for the individual characteristics of each battery pack.
    Type: Application
    Filed: October 27, 2017
    Publication date: May 3, 2018
    Applicant: VoltServer, Inc.
    Inventor: Stephen S. Eaves
  • Patent number: 9893521
    Abstract: A digital power network comprises at least one digital electric power routing device that includes (a) at least one DC power bus; (b) at least two power control elements, each with at least two sets of power terminals, at least one of which accommodates electrical power in packet energy transfer format, and wherein each power control element has electrical connections that allow one set of power terminals to be connected to the DC power bus; and (c) at least one network controller operable to execute control functions within the power control elements to route electrical power from at least one power control element to at least one other power control element within the digital power network. The digital power network further includes at least one power source and at least one load.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: February 13, 2018
    Assignee: VoltServer, Inc.
    Inventors: Harry Daniel Lowe, Stephen Spencer Eaves
  • Patent number: 9853689
    Abstract: In a digital power system a digital power receiver is electrically coupled with a power control element to receive electrical current therefrom. The power control element includes (i) a power conditioning circuit electrically coupled with an electrical power source and (ii) element controller circuitry electrically coupled with the power conditioning circuit. The element controller circuitry is configured to control and receive feedback from the power conditioning circuit, to receive a communication/synchronization signal, and to output digital power under packet energy transfer protocol.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: December 26, 2017
    Assignee: VoltServer, Inc.
    Inventor: Stephen Spencer Eaves
  • Publication number: 20170229886
    Abstract: In the transfer of energy from a source to a load, a power distribution system is configured to detect unsafe conditions that include electrically conducting foreign objects or individuals that have come in contact with exposed conductors in the power distribution system. A responsive signal is generated in a source controller including source terminals. The responsive signal reverses a voltage on the source terminals. With the voltage on the source terminals reversed, a measurement of electrical current flowing through the source terminals is acquired; and the source controller generates signals to electrically disconnect the source from the source terminals if and when the electrical current falls outside of high or low limits indicating that there is a conducting foreign object or living organism making electrical contact with the source or load terminals or a failure in power distribution system hardware.
    Type: Application
    Filed: February 7, 2017
    Publication date: August 10, 2017
    Applicant: VoltServer, Inc.
    Inventor: Stephen S. Eaves
  • Publication number: 20170214236
    Abstract: A digital power distribution system comprises a digital power transmitter configured to accept analog electrical power and to convert the analog electrical power into discrete energy packets for distribution across a common set of transmission lines; a plurality of digital power receivers with parallel connections to the transmission lines, wherein the digital power receivers are configured to accept the energy packets from the digital power transmitter and to convert the packets back into analog electrical power for use by the load device; a load device electrically coupled with at least one of the digital power receivers and configured to receive analog electrical power from the digital power receiver with which it is electrically coupled; and a termination module with parallel connections to the transmission lines, wherein the termination module includes at least a capacitor configured to establish the characteristic capacitance of the transmission lines.
    Type: Application
    Filed: January 23, 2017
    Publication date: July 27, 2017
    Applicant: VoltServer, Inc.
    Inventor: Stephen Spencer Eaves
  • Patent number: 9419436
    Abstract: Digital power is regulated by transmitting digital power via a transmission line pair to at least one receiver circuit in a digital power receiving system. The digital power is converted into analog power in the receiver circuit. The analog power is transmitted to at least one power conditioning circuit, and output power is transmitted from the power conditioning circuit. At least one voltage in the digital power receiver system is monitored; and, in response to that monitoring, the output power from the power conditioning circuit is regulated to improve at least one of safety, efficiency, resiliency, control, and routing of power.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: August 16, 2016
    Assignee: VoltServer, Inc.
    Inventors: Stephen Spencer Eaves, Harry Daniel Lowe
  • Publication number: 20160134331
    Abstract: a digital power system includes at least one electrical power source, at least one power control element, and a digital power receiver electrically coupled with the power control element to receive electrical current therefrom. The power control element includes (i) a power conditioning circuit electrically coupled with the electrical power source and (ii) element controller circuitry electrically coupled with the power conditioning circuit and configured to control and receive feedback from the power conditioning circuit, to receive a communication/synchronization signal, and to output digital power under packet energy transfer protocol.
    Type: Application
    Filed: November 5, 2015
    Publication date: May 12, 2016
    Applicant: VoltServer, Inc.
    Inventor: Stephen Spencer Eaves
  • Publication number: 20160111877
    Abstract: Digital power is regulated by transmitting digital power via a transmission line pair to at least one receiver circuit in a digital power receiving system. The digital power is converted into analog power in the receiver circuit. The analog power is transmitted to at least one power conditioning circuit, and output power is transmitted from the power conditioning circuit. At least one voltage in the digital power receiver system is monitored; and, in response to that monitoring, the output power from the power conditioning circuit is regulated to improve at least one of safety, efficiency, resiliency, control, and routing of power.
    Type: Application
    Filed: October 19, 2015
    Publication date: April 21, 2016
    Applicant: VOLTSERVER, INC.
    Inventors: Stephen Spencer Eaves, Harry Daniel Lowe
  • Patent number: 9184795
    Abstract: Data is communicated between a digital power transmitter and one or more digital power receivers over a transmission line comprising positive and negative conductors. If the transmitter is sending data to the receiver, a first transmitter electrical switch is selectively operated to increase electrical charge in the transmission-line capacitance. If the receiver is sending data to the transmitter, a first receiver electrical switch is selectively operated to increase electrical charge in the transmission-line capacitance.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: November 10, 2015
    Assignee: VoltServer, Inc.
    Inventor: Stephen Spencer Eaves
  • Patent number: 8781637
    Abstract: A power distribution system (that can detect an unsafe fault condition where an individual or object has come in contact with the power conductors) regulates the transfer of energy from a source to a load. Periodically, the source controller opens an S1 disconnect switch, a and load controller opens an S2 disconnect switch. A capacitor represents the capacitance across the load terminals. If the capacitor discharges at a rate higher or lower than predetermined values after the S1 and S2 disconnect switches are opened, then a fault condition is registered, and the S1 and S2 switches will not be commanded to return to a closed position, thus isolating the fault from both the source and the load.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: July 15, 2014
    Assignee: VoltServer Inc.
    Inventor: Stephen S. Eaves
  • Publication number: 20130103220
    Abstract: A power distribution system (that can detect an unsafe fault condition where an individual or object has come in contact with the power conductors) regulates the transfer of energy from a source to a load. Periodically, the source controller opens an S1 disconnect switch, a and load controller opens an S2 disconnect switch. A capacitor represents the capacitance across the load terminals. If the capacitor discharges at a rate higher or lower than predetermined values after the S1 and S2 disconnect switches are opened, then a fault condition is registered, and the S1 and S2 switches will not be commanded to return to a closed position, thus isolating the fault from both the source and the load.
    Type: Application
    Filed: December 7, 2012
    Publication date: April 25, 2013
    Applicant: VOLTSERVER INC.
    Inventor: VOLTSERVER INC.