Patents Assigned to Power Systems, Inc.
  • Patent number: 10895604
    Abstract: Systems and methods to provide a low voltage interface coupleable between an energy storage device or a DC power source (e.g., fuel cell stack, battery) and one or more AC signal diagnostic systems. The low voltage interface reduces a voltage of the DC power source and supplies the reduced voltage to the one or more AC signal diagnostic systems without affecting the results of the measurements obtained by the one or more AC signal diagnostic systems. Such functionality provides a safer method for performing advanced analysis (e.g., EIS, frequency analysis) while utilizing lower cost and/or smaller components.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: January 19, 2021
    Assignees: Ballard Power Systems Inc., Simon Fraser University
    Inventors: Jacob W. Devaal, Hooman Homayouni, Farid Golnaraghi
  • Patent number: 10897284
    Abstract: A system and method for programmably operating a DC load connected to a DC outlet. A power line communication (PLC) client at the outlet measures actual and desired DC voltage at the load. A remotely located DC power server is connected between a DC power source and the outlet. The power server has a PLC master in bidirectional feedback communication with the PLC client to determine the actual and desired DC voltage at the load. An adjustable DC voltage module at the power server is controlled by the PLC master to supply an adjustable DC voltage. The power server adjusts the DC voltage supplied by the voltage module to the load based on the bidirectional feedback communication between the PLC master and the PLC client.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: January 19, 2021
    Assignee: NEXTEK POWER SYSTEMS, INC.
    Inventors: Jeffrey Hunsinger, Paul Savage, Paul Wickett
  • Patent number: 10892637
    Abstract: A power supply covering both power sharing and power backup functions run in a more efficient and flexible way. The power supply adopts a power sharing converter coupled between a first bus terminal and a second bus terminal, so that if one of the bus terminals provides insufficient power, the other bus terminal kicks in by way of the power sharing converter to provide power support. In addition, a storage capacitor may also kick in to provide power support if one of the bus terminals provide insufficient power via or not via the power sharing converter.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: January 12, 2021
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Ming Lu, Pengjie Lai, Jian Jiang
  • Patent number: 10892509
    Abstract: A fuel cell stack assembly is disclosed comprising: a fuel cell stack comprising a first end plate, a second end plate, and a plurality of fuel cells interposed between the first and the second end plates; and a compression band which urges the first end plate towards the second end plate along a first face of the fuel cell stack and also along an opposing second face of the fuel stack in a stacking direction thereof in at least two passes on each face of fuel cells stack, thereby applying a compressive force upon the plurality of fuel cells in the fuel cell stack.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: January 12, 2021
    Assignee: BALLARD POWER SYSTEMS INC.
    Inventors: David Myers, George Skinner, Emerson R. Gallagher
  • Patent number: 10883415
    Abstract: A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: January 5, 2021
    Assignee: Generac Power Systems, Inc.
    Inventors: Steven W. Craig, Andrew P. Sibrel, Aaron J. Baska, Douglas R Clement
  • Patent number: 10879693
    Abstract: A Z source network includes positive and negative input terminals and a first snubber circuit connected across the positive and negative input terminals. The first snubber circuit is configured to suppress voltage transients across the positive and negative input terminals. The Z source network also includes positive and negative output terminals and a second snubber circuit connected across the positive and negative output terminals. The second snubber circuit is configured to suppress voltage transients across the positive and negative output terminals.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: December 29, 2020
    Assignee: DRS NAVAL POWER SYSTEMS, INC.
    Inventors: Christopher Harper, Jeffery Fischer, Ian Wallace
  • Patent number: 10865539
    Abstract: Soil displacement piles having a shaft and one or more soil displacement assemblies secured to the shaft are provided. If more than one soil displacement assembly is utilized, each soil displacement assembly is separated by a longitudinal distance. Each soil displacement assembly has an upper helical plate, a lower helical plate and separated from the upper helical plate by a longitudinal plate distance, and at least one soil displacement plate positioned relative to the shaft, the upper helical plate and the lower helical plate.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: December 15, 2020
    Assignee: HUBBELL POWER SYSTEMS, INC.
    Inventors: Alex Joseph Raposo, Matthew Alan Conte, Gary Leonard Seider, Timothy Michael Kemp, Shawn David Downey
  • Patent number: 10862310
    Abstract: A system includes a generator configured to be electrically coupled to a grid, a transmission configured to mechanically couple the generator to a prime mover, a converter circuit configured to be electrically coupled between the grid and an energy storage device, and a controller configured to control the converter circuit and the transmission. The controller may operate the converter circuit to source or sink power in response to a change on the grid meeting a criterion. The controller may be further configured to adjust a transmission ratio of the transmission based on a demand on the generator. The controller may also be configured to cause the transmission to mechanically decouple the generator from the prime mover while maintaining an electrical coupling of the generator to the grid so that the mechanically decoupled generator can contribute current to a fault on the grid.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: December 8, 2020
    Assignee: Flexgen Power Systems, Inc.
    Inventors: Pasi Taimela, Tony Olivo
  • Publication number: 20200378425
    Abstract: Tamper-resistant, hole covering systems are provided. An exemplary system may include tamper-resistant coverings on the sides of a hole of an article to cover the hole and a tamper-resistant fastener that passes through the hole and securely connects the two coverings.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Applicant: Enginuity Power Systems, Inc.
    Inventor: Steven Spurr
  • Patent number: 10854727
    Abstract: A method of fabricating an electronic device includes providing a III-V substrate having a hexagonal crystal structure and a normal to a growth surface characterized by a misorientation from the <0001> direction of between 0.15° and 0.65°. The method also includes growing a first III-V epitaxial layer coupled to the III-V substrate and growing a second III-V epitaxial layer coupled to the first III-V epitaxial layer. The method further includes forming a first contact in electrical contact with the III-V substrate and forming a second contact in electrical contact with the second III-V epitaxial layer.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: December 1, 2020
    Assignee: NEXGEN POWER SYSTEMS, INC.
    Inventors: Isik C. Kizilyalli, Dave P. Bour, Thomas R. Prunty, Gangfeng Ye
  • Patent number: 10855174
    Abstract: A power supply covering power sharing and overshoot preventing functions. In the power supply, a first eFuse is used to deliver a first input power source to a first load at a first bus terminal, and a second eFuse is used to deliver a second input power source to a second load at a second bus terminal. When the current flowing through one eFuse hits its current limit threshold, the other input power source kicks in to provide power support. The current limit threshold of each eFuse is set to be lower than its maximum rated current.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: December 1, 2020
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Ming Lu, Pengjie Lai, Jian Jiang
  • Publication number: 20200371574
    Abstract: Disclosed techniques include power manipulation using power caches within a datacenter. The power caches store power for later use when power demand exceeds the power available. A power source is coupled across a plurality of data racks to a power load within a datacenter. A power cache is coupled to the power load. Power for the power load is provided from the power source. The power cache is enabled to provide power to the power load when power requirements of the power load exceed a power threshold. The power threshold is determined by a set of power policies for the datacenter. The enabling the power cache to provide power to the power load provides power bursting capability.
    Type: Application
    Filed: August 14, 2020
    Publication date: November 26, 2020
    Applicant: Virtual Power Systems, Inc.
    Inventors: Shankar Ramamurthy, Akshay Krishnamoorthy, Martin P. Leslie, Wade Floren Schott, Karimulla Raja Shaikh
  • Patent number: 10840795
    Abstract: A driver for driving a power transistor, the driver having: a first transistor, and a second transistor; wherein (1) when the first transistor is turned on, the second transistor is simultaneously turned on, and wherein after the second transistor remains on for a first time period, the second transistor is turned off for a second time period during when a switching voltage at a second terminal of the power transistor is rising, and the second transistor is turned on after the second time period is over; and (2) when the first transistor is turned off, the second transistor is simultaneously turned off.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: November 17, 2020
    Assignee: Monolithic Power Systems, Inc.
    Inventor: James Nguyen
  • Publication number: 20200348045
    Abstract: A combined heat and power system generates energy and efficiently captures a percentage of such energy that would otherwise be lost to, among other things, control the temperature and humidity of a house or dwelling.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 5, 2020
    Applicant: Enginuity Power Systems, Inc.
    Inventors: James Warren, Gregory Powell
  • Patent number: 10826323
    Abstract: A UPS with voltage-balancing state detection of batteries includes a processor, a voltage measurement module, a voltage control module, a battery pack and a display unit. Each of the voltage measurement module and the voltage control module is connected to the processor and the battery pack. The processor is connected to the display unit, generates a voltage index value according to voltage values measured by the voltage measurement module and a voltage-balancing state according to the voltage index value and a set of index ranges, controls charging to the battery pack according to the voltage values through the voltage control module, acquires an updated voltage-balancing state of the battery pack, and instructs the display unit to display the voltage-balancing state to prompt users for battery replacement when the voltage-balancing state and the updated voltage-balancing state acquired within a state-holding time are identical.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: November 3, 2020
    Assignee: CYBER POWER SYSTEMS INC.
    Inventors: Hung-Ming Hsieh, Yung-Hao Peng, Ta-Peng Chen
  • Patent number: 10821977
    Abstract: Pre-loading drivetrain to minimize electric vehicle rollback and increase drive responsiveness. In an exemplary embodiment, a method includes (a) detecting that an electric vehicle is stationary, a brake is engaged, and an accelerator is not engaged, and (b) controlling a vehicle motor to transition from a first mode to a second mode in response to (a). In the first mode, the motor is controlled to output torque in response to the accelerator position, and in the second mode, the motor is controlled to output torque sufficient to preload the electric vehicle. The method also includes (c) detecting the brake is transitioning away from being engaged and the accelerator is not engaged, and (d) controlling the motor to operate in a third mode in response to (c). In the third mode the motor is controlled to output torque sufficient to maintain the electric vehicle stationary.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: November 3, 2020
    Assignee: Motiv Power Systems, Inc.
    Inventors: Elias Stein, Justin Tomlin, Tai-Sik Hwang, James Michael Castelaz
  • Patent number: 10809755
    Abstract: A system includes a power source, a power converter, a leakage current cancelation circuit, a load, and a ground node. The power converter is coupled to the power source and supplies the load. During operation of the power converter, a common mode current flows from the load to the ground node via a leakage capacitance. The leakage current cancelation circuit receives at least one signal indicative of the common mode current and generates a leakage cancelation current that is injected into at least one node of the system. The leakage cancelation current has a magnitude opposite a magnitude of the common mode current. For example, the leakage current cancelation circuit receives supply voltage signals output by the power converter, and generates and supplies the leakage cancelation current onto input nodes of the power converter such that a current level on the ground node is between ?3.0 milliamperes and +3.0 milliamperes.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: October 20, 2020
    Assignee: Motiv Power Systems, Inc.
    Inventors: William Treichler, James Michael Castelaz, Grayson Zulauf
  • Patent number: 10811878
    Abstract: A PDU (power distribution unit) having capability for remaining power management, the PDU has a plurality of first outlets, the PDU can electrically connect with a UPS (Uninterruptible Power Supply), the PDU and the UPS can be communicatively connected to a manager; wherein the PDU can receive a remaining power parameter which is transmitted from the UPS, the manager can use the user interface to display the remaining power parameter, and the manager can use the user interface to set up at least one outlet action, the PDU can control at least one the first outlet to execute the outlet action according to the remaining power parameter.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: October 20, 2020
    Assignee: CYBER POWER SYSTEMS, INC.
    Inventors: Hung-Ming Hsieh, Shang-Hsiu Yang
  • Patent number: 10780391
    Abstract: A biogas cleaning method for purifying a biogas waste stream to form a combustible clean biofuel uses a biogas cleaning system that includes a gas control system, a deoxidizer catalyst bed, a hydrosulfurization catalyst bed, a hydrogen sulfide adsorption bed and a thermal sensor controller. The biogas cleaning method includes using a biogas source to introduce a biogas waste stream into the biogas cleaning system, blending hydrogen with the biogas waste stream, combusting the blended hydrogen and biogas stream to remove oxygen, hydrogenating the heated biogas waste stream to convert sulfur species to hydrogen sulfide and adsorbing the hydrogen sulfide from the biogas stream. In some embodiments, a biogas cleaning system also includes a sulfur polisher adsorption bed, a chlorine removal adsorption bed, a siloxane removal adsorption bed, a heat exchanger loop and a biogas precooler.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: September 22, 2020
    Assignee: Quadrogen Power Systems, Inc.
    Inventors: Alakh Prasad, Kevin Marchand
  • Patent number: 10784700
    Abstract: Electrical power is dynamically managed a power source a load. A control switching system has a plurality of monitor nodes, a control switch having two switching states, and an electrical power storage cell connected to the power source in one of the switching states for storing voltage, and operative for discharging the stored voltage to the electrical load in the other of the switching states. A programmed controller dynamically monitors operating conditions at the monitor nodes during operation of the electrical load and the power source, and switches the control switch between the switching states in response to the monitored operating conditions for supplying a voltage of a desired waveform shape to the load.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: September 22, 2020
    Assignee: Nextek Power Systems, Inc.
    Inventor: Alex M. Adelson