Patents by Inventor Donald J. Hammerstrom
Donald J. Hammerstrom 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).
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Patent number: 8700225Abstract: Disclosed herein are representative embodiments of methods, apparatus, and systems for charging and discharging an energy storage device connected to an electrical power distribution system. In one exemplary embodiment, a controller monitors electrical characteristics of an electrical power distribution system and provides an output to a bi-directional charger causing the charger to charge or discharge an energy storage device (e.g., a battery in a plug-in hybrid electric vehicle (PHEV)). The controller can help stabilize the electrical power distribution system by increasing the charging rate when there is excess power in the electrical power distribution system (e.g., when the frequency of an AC power grid exceeds an average value), or by discharging power from the energy storage device to stabilize the grid when there is a shortage of power in the electrical power distribution system (e.g., when the frequency of an AC power grid is below an average value).Type: GrantFiled: April 10, 2012Date of Patent: April 15, 2014Assignee: Battelle Memorial InstituteInventors: Richard M. Pratt, Donald J. Hammerstrom, Michael C. W. Kintner-Meyer, Francis K. Tuffner
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Patent number: 8590802Abstract: An advanced electric water heater control system that interfaces with a high temperature cut-off thermostat and an upper regulating thermostat. The system includes a control module that is electrically connected to the high-temperature cut-off thermostat and the upper regulating thermostat. The control module includes a switch to open or close the high-temperature cut-off thermostat and the upper regulating thermostat. The control module further includes circuitry configured to control said switch in response to a signal selected from the group of an autonomous signal, a communicated signal, and combinations thereof.Type: GrantFiled: December 17, 2009Date of Patent: November 26, 2013Assignee: Battelle Memorial InstituteInventor: Donald J. Hammerstrom
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Patent number: 8558511Abstract: A method for managing the charging and discharging of batteries wherein at least one battery is connected to a battery charger, the battery charger is connected to a power supply. A plurality of controllers in communication with one and another are provided, each of the controllers monitoring a subset of input variables. A set of charging constraints may then generated for each controller as a function of the subset of input variables. A set of objectives for each controller may also be generated. A preferred charge rate for each controller is generated as a function of either the set of objectives, the charging constraints, or both, using an algorithm that accounts for each of the preferred charge rates for each of the controllers and/or that does not violate any of the charging constraints. A current flow between the battery and the battery charger is then provided at the actual charge rate.Type: GrantFiled: April 7, 2009Date of Patent: October 15, 2013Assignee: Battelle Memorial InstituteInventor: Donald J. Hammerstrom
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Publication number: 20130268132Abstract: Disclosed herein are representative embodiments of methods, apparatus, and systems for charging and discharging an energy storage device connected to an electrical power distribution system. In one exemplary embodiment, a controller monitors electrical characteristics of an electrical power distribution system and provides an output to a bi-directional charger causing the charger to charge or discharge an energy storage device (e.g., a battery in a plug-in hybrid electric vehicle (PHEV)). The controller can help stabilize the electrical power distribution system by increasing the charging rate when there is excess power in the electrical power distribution system (e.g., when the frequency of an AC power grid exceeds an average value), or by discharging power from the energy storage device to stabilize the grid when there is a shortage of power in the electrical power distribution system (e.g., when the frequency of an AC power grid is below an average value).Type: ApplicationFiled: June 4, 2013Publication date: October 10, 2013Inventors: Richard M. Pratt, Donald J. Hammerstrom, Michael C.W. Kintner-Meyer, Francis K. Tuffner
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Patent number: 8478452Abstract: Disclosed herein are representative embodiments of methods, apparatus, and systems for charging and discharging an energy storage device connected to an electrical power distribution system. In one exemplary embodiment, a controller monitors electrical characteristics of an electrical power distribution system and provides an output to a bi-directional charger causing the charger to charge or discharge an energy storage device (e.g., a battery in a plug-in hybrid electric vehicle (PHEV)). The controller can help stabilize the electrical power distribution system by increasing the charging rate when there is excess power in the electrical power distribution system (e.g., when the frequency of an AC power grid exceeds an average value), or by discharging power from the energy storage device to stabilize the grid when there is a shortage of power in the electrical power distribution system (e.g., when the frequency of an AC power grid is below an average value).Type: GrantFiled: April 6, 2010Date of Patent: July 2, 2013Assignee: Battelle Memorial InstituteInventors: Richard M. Pratt, Donald J. Hammerstrom, Michael C. W. Kintner-Meyer, Francis K. Tuffner
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Patent number: 8258761Abstract: Electrical energy consumption control apparatuses and electrical energy consumption control methods are described. According to one aspect, an electrical energy consumption control apparatus includes processing circuitry configured to receive a signal which is indicative of current of electrical energy which is consumed by a plurality of loads at a site, to compare the signal which is indicative of current of electrical energy which is consumed by the plurality of loads at the site with a desired substantially sinusoidal waveform of current of electrical energy which is received at the site from an electrical power system, and to use the comparison to control an amount of the electrical energy which is consumed by at least one of the loads of the site.Type: GrantFiled: July 29, 2008Date of Patent: September 4, 2012Assignee: Battelle Memorial InstituteInventor: Donald J. Hammerstrom
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Publication number: 20120200160Abstract: Disclosed herein are representative embodiments of methods, apparatus, and systems for charging and discharging an energy storage device connected to an electrical power distribution system. In one exemplary embodiment, a controller monitors electrical characteristics of an electrical power distribution system and provides an output to a bi-directional charger causing the charger to charge or discharge an energy storage device (e.g., a battery in a plug-in hybrid electric vehicle (PHEV)). The controller can help stabilize the electrical power distribution system by increasing the charging rate when there is excess power in the electrical power distribution system (e.g., when the frequency of an AC power grid exceeds an average value), or by discharging power from the energy storage device to stabilize the grid when there is a shortage of power in the electrical power distribution system (e.g., when the frequency of an AC power grid is below an average value).Type: ApplicationFiled: April 10, 2012Publication date: August 9, 2012Inventors: Richard M. Pratt, Donald J. Hammerstrom, Michael C.W. Kintner-Meyer, Francis K. Tuffner
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Patent number: 8183826Abstract: Battery charging control methods, electric vehicle charging methods, battery charging apparatuses and rechargeable battery systems. According to one aspect, a battery charging control method includes accessing information regarding a presence of at least one of a surplus and a deficiency of electrical energy upon an electrical power distribution system at a plurality of different moments in time, and using the information, controlling an adjustment of an amount of the electrical energy provided from the electrical power distribution system to a rechargeable battery to charge the rechargeable battery.Type: GrantFiled: May 15, 2009Date of Patent: May 22, 2012Assignee: Battelle Memorial InstituteInventors: Francis K. Tuffner, Michael C. W. Kintner-Meyer, Donald J. Hammerstrom, Richard M. Pratt
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Publication number: 20110270452Abstract: Disclosed herein are representative embodiments of methods, apparatus, and systems for controlling and scheduling power distribution in a power network, such as household power network. One disclosed embodiment is a system comprising a central controller and a control device coupled to a household appliance. The central controller can comprise computing hardware coupled to a wireless transceiver. The central controller can be configured to generate and transmit control signals for controlling the operational state of the household appliance according to the schedule. Furthermore, the control device can be configured to receive the transmitted control signals from the central controller and to control the operational state of the household appliance in response to the control signals.Type: ApplicationFiled: May 3, 2010Publication date: November 3, 2011Inventors: Ning Lu, Pengwei Du, Xinxin Guo, Robert G. Pratt, Donald J. Hammerstrom
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Publication number: 20110245987Abstract: Disclosed herein are representative embodiments of methods, apparatus, and systems for charging and discharging an energy storage device connected to an electrical power distribution system. In one exemplary embodiment, a controller monitors electrical characteristics of an electrical power distribution system and provides an output to a bi-directional charger causing the charger to charge or discharge an energy storage device (e.g., a battery in a plug-in hybrid electric vehicle (PHEV)). The controller can help stabilize the electrical power distribution system by increasing the charging rate when there is excess power in the electrical power distribution system (e.g., when the frequency of an AC power grid exceeds an average value), or by discharging power from the energy storage device to stabilize the grid when there is a shortage of power in the electrical power distribution system (e.g., when the frequency of an AC power grid is below an average value).Type: ApplicationFiled: April 6, 2010Publication date: October 6, 2011Inventors: Richard M. Pratt, Donald J. Hammerstrom, Michael C. W. Kintner-Meyer, Francis K. Tuffner
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Publication number: 20110147473Abstract: An advanced electric water heater control system that interfaces with a high temperature cut-off thermostat and an upper regulating thermostat. The system includes a control module that is electrically connected to the high-temperature cut-off thermostat and the upper regulating thermostat. The control module includes a switch to open or close the high-temperature cut-off thermostat and the upper regulating thermostat. The control module further includes circuitry configured to control said switch in response to a signal selected from the group of an autonomous signal, a communicated signal, and combinations thereof.Type: ApplicationFiled: December 17, 2009Publication date: June 23, 2011Inventor: Donald J. Hammerstrom
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Publication number: 20110147360Abstract: Thermal energy storage apparatus, controllers and thermal energy storage control methods are described. According to one aspect, a thermal energy storage apparatus controller includes processing circuitry configured to access first information which is indicative of surpluses and deficiencies of electrical energy upon an electrical power system at a plurality of moments in time, access second information which is indicative of temperature of a thermal energy storage medium at a plurality of moments in time, and use the first and second information to control an amount of electrical energy which is utilized by a heating element to heat the thermal energy storage medium at a plurality of moments in time.Type: ApplicationFiled: September 30, 2010Publication date: June 23, 2011Inventor: Donald J. Hammerstrom
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Publication number: 20100289451Abstract: Battery charging control methods, electric vehicle charging methods, battery charging apparatuses and rechargeable battery systems are described. According to one aspect, a battery charging control method includes accessing information regarding a presence of at least one of a surplus and a deficiency of electrical energy upon an electrical power distribution system at a plurality of different moments in time, and using the information, controlling an adjustment of an amount of the electrical energy provided from the electrical power distribution system to a rechargeable battery to charge the rechargeable battery.Type: ApplicationFiled: May 15, 2009Publication date: November 18, 2010Inventors: Francis K. Tuffner, Michael C.W. Kintner-Meyer, Donald J. Hammerstrom, Richard M. Pratt
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Publication number: 20100253290Abstract: A method for managing the charging and discharging of batteries wherein at least one battery is connected to a battery charger, the battery charger is connected to a power supply. A plurality of controllers in communication with one and another are provided, each of the controllers monitoring a subset of input variables. A set of charging constraints may then generated for each controller as a function of the subset of input variables. A set of objectives for each controller may also be generated. A preferred charge rate for each controller is generated as a function of either the set of objectives, the charging constraints, or both, using an algorithm that accounts for each of the preferred charge rates for each of the controllers and/or that does not violate any of the charging constraints. A current flow between the battery and the battery charger is then provided at the actual charge rate.Type: ApplicationFiled: April 7, 2009Publication date: October 7, 2010Inventor: Donald J. Hammerstrom
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Patent number: 7799290Abstract: A non-thermal plasma or corona discharge is generated at multiple points and distributed to decontaminate surfaces and objects contaminated with chemical or biological agents. The corona discharge can be generated using very short high voltage pulses. The pulsed corona discharge can be directed at a contaminated surface through the unbraided strands at an end of a dielectric covered conductor. Another pulsed discharge embodiment incorporates a primary coil surrounding a chamber having a void filled with a plurality of secondary coils. A silent corona discharge can be generated using a variety of different configurations of a dielectric coated electrode and a bare electrode. The silent discharge is produced at all intersections between the dielectric covered electrode and the bare electrode. In one embodiment the apparatus comprises a blanket-like structure that is useful for decontaminating surfaces or decontaminating a fluid passing between spaced-apart bare electrodes.Type: GrantFiled: January 23, 2006Date of Patent: September 21, 2010Assignee: MesoSystems Technology, Inc.Inventors: Donald J. Hammerstrom, Joseph G. Birmingham, James S. Millar
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Publication number: 20090033296Abstract: A system, method and device for controlling and modifying the current drawn by an electrical load in a way that will improve the electrical power factor and harmonic quality of at least a portion of an electrical power system. In one embodiment of the invention, the invention includes a controller device that monitors the electrical current entering a site and modifies or corrects power quality of the current by directing how power will be consumed by the appliances at a site to improve the harmonic and power factor qualities of the electrical current entering the site.Type: ApplicationFiled: July 29, 2008Publication date: February 5, 2009Inventor: Donald J. Hammerstrom
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Patent number: 7037468Abstract: Apparatus and method for using a non-thermal plasma or corona discharge generated at multiple points and distributed to decontaminate surfaces and objects contaminated with chemical or biological agents. The corona discharge can be generated using very short high voltage pulses. The pulsed corona discharge can be directed at a contaminated surface through the unbraided strands at an end of a dielectric covered conductor. Another pulsed discharge embodiment incorporates a primary coil surrounding a chamber having a void filled with a plurality of secondary coils. A silent corona discharge can be generated using a variety of different configurations of a dielectric coated electrode and a bare electrode. The silent discharge is produced at all intersections between the dielectric covered electrode and the bare electrode. In one embodiment the apparatus comprises a blanket-like structure that is useful for decontaminating surfaces or decontaminating a fluid passing between spaced-apart bare electrodes.Type: GrantFiled: July 9, 2002Date of Patent: May 2, 2006Assignee: MesoSystems Technology, Inc.Inventors: Donald J. Hammerstrom, Joseph G. Birmingham, James S. Millar
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Patent number: 6882063Abstract: A DC to DC Converter includes an electrical circuit that allows batteries and other electrical energy storage devices to be charged from or to discharge to a variable voltage DC bus. This electrical circuit also enables seamless integration with other energy storage devices and/or DC power sources, such as fuel cells, to provide DC power for a Power Management System. A Power Management System preferably provides both full power source management and power conditioning. The Power Management System is able to manage power flow to and from multiple, isolated power sources and energy storage devices to deliver high quality alternating current (“AC”) power to a load.Type: GrantFiled: May 27, 2003Date of Patent: April 19, 2005Assignee: International Power Systems, Inc.Inventors: Gerald W. Droppo, Lawrence A. Schienbein, Brent Earle Harris, Donald J. Hammerstrom
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Patent number: 6765315Abstract: An interface between software and hardware, as well as a fuzzy logic control algorithm, for controlling a DC-DC converter or an AC-DC or DC-AC inverter are provided. A control circuit receives commands from a control logic to operate a converter or inverter in various operation modes. Control software inputs can be translated into signals to operate the converter or inverter. Control variables in the control software can be configured to operate under various control modes. If the converter or inverter cannot simultaneously meet the demands placed on two or more variables, the control logic can use prioritization to choose a more important constraint.Type: GrantFiled: March 14, 2002Date of Patent: July 20, 2004Assignee: International Power Systems, Inc.Inventors: Donald J. Hammerstrom, Patrick Harman
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Patent number: 6738692Abstract: A power conversion and energy management system preferably includes a controller, one or more standard modules, and a custom (or semi-custom) backplane. The backplane preferably accommodates one or more modules and uses the modules to control power quality and/or flow to one or more input and/or output connections. The standard modules are preferably power modules such as an inverter module, converter module, or grid connect module. In addition to accommodating the modules, the backplane can include system components other than power electronics. The backplane can, for example, include external connectors, disconnects, fusing, and so forth, for a given application. The backplane can further include internal DC and AC buses to interconnect the modules. The backplane can also include a communications module, a user interface, a socket for control firmware, and slots for accommodating the standard modules.Type: GrantFiled: June 24, 2002Date of Patent: May 18, 2004Assignee: Sustainable Energy TechnologiesInventors: Lawrence A. Schienbein, Donald J. Hammerstrom, Gerald W. Droppo, Brent Earle Harris