Ac And Dc Patents (Class 307/26)
  • Patent number: 10705496
    Abstract: Provided is a control device of a home energy management system (HEMS). The control device includes a communication unit configured to connect to a HEMS gateway, a storage unit configured to store power usage information for a predetermined period in a home in which the HEMS gateway is installed, and a control unit configured to predict power consumption amount on the basis of the power usage information for the predetermined period, predict a power generation amount of a photovoltaic (PV) module connected to the HEMS gateway, calculate a PV power amount to be sold on the basis of the predicted power generation amount and power consumption amount, set sales price with respect to the calculated power amount on the basis of purchase information of purchasers, and control the HEMS so that sale power corresponding to the calculated power amount is provided on the basis of the set sales price.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: July 7, 2020
    Assignee: LG Electronics Inc.
    Inventors: Dongmin Son, Jiyoung Lee
  • Patent number: 10622802
    Abstract: A power receiving apparatus receives a bus voltage from a power supply apparatus via a cable, and supplies the bus voltage to a load circuit. A power receiver side controller receives, as a power supply, a voltage VADP of a bus line that is more toward a bus switch. The power receiver side controller is capable of communicating with a power supply side controller of the power supply apparatus. Furthermore, the power receiver side controller determines the voltage to be supplied based on a negotiation, and controls the bus switch. A short circuit detection circuit detects a short circuit of a bus line that is more toward the load circuit side than the bus switch.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: April 14, 2020
    Assignee: ROHM CO., LTD.
    Inventors: Fuminori Koga, Kenichi Motoki
  • Patent number: 10601226
    Abstract: A method and apparatus for parallel operation of multiple power sources including one fuel cell power source. The apparatus includes a droop controller master communicatively connected to the multiple power sources and configured to measure a load demand for the multiple power sources, a first droop controller slave communicatively connected to the droop controller master and to a first fuel cell power source, the first droop controller configured to calculate a first droop profile for the first fuel cell power source, a second droop controller slave communicatively connected to the droop controller master and to a second power source, and a first inverter, electrically connected to the first fuel cell power source and communicatively connected to the first droop controller slave, and configured to output power according to a first droop profile.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: March 24, 2020
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: Ranganathan Gurunathan, Arne Ballantine, Prasad Pmsvvsv, Vishal Anand Gopalakrishnan, Saravanakumar Narayanasamy, Badrinarayanan Thiruvengadaswamy
  • Patent number: 10549642
    Abstract: A system for providing mechanical and electrical power in a vehicle or other engine-driven platform includes a first engine having a first power rating and a second engine having a second power rating that is less than the first power rating. The system further includes a first generator (for example, an alternator) for generating electrical power for a load operation (such as vehicle propulsion), and a second generator (for example, a DFIG) for generating fixed frequency electrical power; both generators are operatively connected to and powered by the first and/or second engines. The first and/or second engines may be selected to power the first generator for generating power for vehicle propulsion or another load operation depending upon situational power requirements of the engine-driven platform.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: February 4, 2020
    Assignee: Transportation IP Holdings, LLC
    Inventors: Jeffrey Louis Daigle, Frank William Veit, Paul Robert Gemin, Brandon James Larson
  • Patent number: 10505388
    Abstract: A power converting device includes an AC/DC converter, a switch, and a controlling unit. The AC/DC converter converts AC power into a DC voltage, and provides the DC voltage to a load. The switch is coupled to a backup power source. The controlling unit receives the DC voltage. If the DC voltage is less than a predetermined voltage or a decrease of the DC voltage is greater than a predetermined percentage of the DC voltage and the controlling unit receives a voltage command signal of the backup power source, the controlling unit turns on the switch for providing the backup power source to the load.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: December 10, 2019
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Kuan-Hsien Tu, Yung-Wei Peng, So-Huan Chiang
  • Patent number: 10389134
    Abstract: An electrical power distribution system includes an electrical power router with input ports and output ports and distributes an electrical signal received on one of the input ports to one of output ports. An electrical input adapter coupled to one of the input ports and further to couple to an electrical power source receives and convert an electrical signal input from the electrical power source to the electrical signal distributed by the power router. An electrical output adapter coupled to one of the output ports and further to couple to an electrical power load receives and converts the electrical signal distributed by the power router from the one of the output ports to an electrical signal output to the electrical power load. A controller coupled to the electrical input adapter, the electrical output adapter, and the electrical power router, controls transmission of the electrical signal from the electrical input adapter to the electrical output adapter through the electrical power router.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: August 20, 2019
    Assignee: Katerra, Inc.
    Inventors: Bahman Sharifipour, Mark Thomas, Ravi Naik
  • Patent number: 10243395
    Abstract: A control method for a system having an inverter with a direct current (DC) connection includes a DC source and an additional DC source or DC sink connected in parallel to the DC connection. An actuator configured to adjust at least one of voltage at the DC source, current supplied by the DC source, and output supplied by the DC source, or the voltage at the DC sink, current drawn by the DC sink, and the output drawn by the DC sink adjusts at least one parameter of the system relating to at least one of voltage, current, and output at the DC source, the DC sink, and/or the DC connection such that voltage at the DC connection, current flowing through the DC connection, output supplied through the DC connection to the inverter, or output supplied through the DC connection from the inverter, corresponds to a predetermined value.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: March 26, 2019
    Assignee: AmbiBox GmbH
    Inventors: Kai Fieber, Manfred Przybilla, Sascha Lehrmann
  • Patent number: 10097034
    Abstract: A UPS system with network monitoring and attached battery pack information sensing functions includes a UPS apparatus including a UPS body and a UPS monitoring module, and attached battery packs coupled to the UPS body. Each attached battery pack includes a battery pack body, and a battery pack monitoring module that includes a control unit, a sensor module for detecting the status information of the battery pack body, a memory, and a network interface for communication with the UPS monitoring module through a local area network to transmit the status information of the battery pack body. When the battery pack monitoring module transmits the status information to the UPS monitoring module, the manager can link a web browser of an external equipment to a battery pack status page provided by a built-in web server of the UPS monitoring module to get the status information of every attached battery pack.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: October 9, 2018
    Assignee: CYBERPOWER SYSTEMS, INC.
    Inventors: Hung-Ming Hsieh, Hung-Chun Chien, Yung-Hao Peng
  • Patent number: 9958885
    Abstract: Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: May 1, 2018
    Assignee: GOOGLE LLC
    Inventors: Ian C. Smith, Daniel Adam Warren, Scott Mullins, Brian Jonathan Conner
  • Patent number: 9906011
    Abstract: An over-current protection circuit includes a first connector, a first current measuring unit, a first switch unit, a first resistor unit, and a second connector. The first connector is electrically coupled to a power supply unit (PSU). When a current of the first resistor unit measured by the first current measuring unit is less than a first reference value, the first switch unit is turned on, and the second connector receives a first power supply from the PSU. When the current of the first resistor unit measured by the first current measuring unit is greater than or equal to the first reference value, the first switch unit is turned off, and the second connector does not receive the first power supply from the PSU.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: February 27, 2018
    Assignee: ScienBiziP Consulting(Shenzhen)Co., Ltd.
    Inventors: Ming-Tao Wei, Qi-Sheng Xu, Sung-Kuo Ku
  • Patent number: 9882385
    Abstract: A system for staring a large-scale power load in a micro grid comprises a PCC grid connection switch, a micro grid alternating-current bus, an active power filter (APF), an energy storage inverter, an energy storage battery, a current-limiting resistor R, contactors K1-K3, a time relay KT, a power supply relay board, a micro grid maser control system, a frequency converter rectifying circuit, a frequency converter filter circuit, and a frequency converter inverter circuit. There are the advantages: an output torque of a power load can be effectively improved by using a variable frequency starting apparatus, and a starting current is also small; the provided method can effectively reduce a harmonic current when a variable frequency starting apparatus starts a power load, the phenomenon that two power sources supply power on a direct-current side of the variable frequency starting apparatus at the same time is avoided, thereby improving the stability and the economy of a micro grid.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: January 30, 2018
    Assignees: STATE GRID HEBEI ELECTRIC POWER RESEARCH INSTITUTE, HEBEI ELECTRIC POWER COMMISSIONING INSTITUTE, STATE GRID CORPORATION OF CHINA
    Inventors: Zhiqiang Gao, Liang Meng, Wenping Hu, Wenxin Wang, Hui Fan, Hao Jing, Bin Liang
  • Patent number: 9876351
    Abstract: In accordance with an embodiment, an electric apparatus is provided with a connection device configured to connect with an external power supply, a battery and a plurality of power load sections, and a controller programmed to select a supply destination of power of the external power supply from a plurality of the power load sections, and supply power of the battery to another power load section except the supply destination according to supply capacity of the external power supply connected with the connection device.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: January 23, 2018
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kazuyuki Yoshikoshi, Hiroshi Tsuchimoto
  • Patent number: 9843209
    Abstract: According to one embodiment, a storage system includes storage devices configured to execute communication by using an identifier, a converter configured to convert the identifier of the storage devices, a controller configured to execute communication with the storage devices via the converter by using the identifier converted by the converter, convert a DC power output from the storage devices into a DC power of a predetermined magnitude and output the DC power, and charge the storage devices with the DC power of the predetermined magnitude, an AC/DC converter configured to convert the DC power output from the controller into an AC power, convert an AC power supplied from a distribution system into a DC power and supply the DC power to the controller, and a controller configured to control the controller and the AC/DC converter.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: December 12, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tamotsu Endo, Jun Fujiwara
  • Patent number: 9812897
    Abstract: An apparatus may include a plurality of power inputs configured to receive direct current from a plurality of external power adapters that convert alternating current to direct current. The plurality of external power adapters may include a primary external power adapter and at least one backup external power adapter. The apparatus may also include a power output configured to provide direct current to a device. In addition, the apparatus may include a switching mechanism that, when the primary external power adapter is operational, supplies direct current from the primary external power adapter to the power output and, when the primary external power adapter fails, supplies direct current from the backup external power adapter to the power output. Various additional apparatuses, systems, and methods are also disclosed.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: November 7, 2017
    Assignee: Juniper Networks, Inc.
    Inventor: Paulo Rodrigues
  • Patent number: 9786937
    Abstract: A power converter for a fuel cell is provided. The power converter includes a boost converter connected to the fuel cell and configured to control a load voltage at a predetermined magnitude in a normal operation mode and to induce an output response by applying a predetermined perturbation current to the fuel cell in a diagnosis mode, and a digital signal processor configured to extract an impedance parameter by detecting the output response of the fuel cell in the diagnosis mode, and predict a lifespan of the fuel cell according to the impedance parameter. The normal operation mode is configured to supply a voltage in response to a change of a load and the diagnosis mode is configured to predict the lifespan of the fuel cell.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: October 10, 2017
    Assignee: Foundation of Soongsil University-Industry Cooperation
    Inventors: Woojin Choi, Tuan Nguyen Thanh
  • Patent number: 9787090
    Abstract: A mixer (power packet generation device) 2 includes switches 21A, 21B, packet generation means 28A, 28B, and a selector 29. The packet generator 28A (28B) causes the switch 21A (21B) to perform ON/OFF operation, based on a target voltage, and a voltage estimated as being applied to a load 4A (4B) in each of a state where a power packet is supplied to the load and a state where no power packet is supplied to the load. The selector 29 performs switching between a state where the packet generators 28A, 28B cause the switches 21A, 21B to perform ON/OFF operation, and a state where the packet generators 28A, 28B maintain the switches 21A, 21B in their OFF states.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: October 10, 2017
    Assignee: Kyoto University
    Inventors: Takashi Hikihara, Shun-ichi Azuma, Ryo Takahashi, Keiji Tashiro
  • Patent number: 9774273
    Abstract: An electric device in one aspect of the present disclosure comprises a connector, a power supply unit, a connection-detection unit, and a control unit. The control unit is configured to control electric power supplied to the power supply unit from a battery so as to increase electric power supplied to the power supply unit when the connection-detection unit detects that an external device is connected to the connector.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: September 26, 2017
    Assignee: MAKITA CORPORATION
    Inventors: Hitoshi Suzuki, Toshiyasu Kasuya, Hiroki Oka
  • Patent number: 9710001
    Abstract: Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: July 18, 2017
    Assignee: GOOGLE INC.
    Inventors: Ian C. Smith, Daniel Adam Warren, Scott Mullins, Brian Jonathan Conner
  • Patent number: 9692236
    Abstract: Systems and methods for the creation of a centrally controlled DC and AC power rail system within a structure. The rails utilize a centralized controller along with a plurality of distributed controllers to allow for power in the rails to be selectively distributed or not distributed to outlets attached to the rails. This allows for power to be distributed without the need for users to utilize hardwired switches, but to instead utilize generally wireless switch modules, which may be implemented in hardware and/or software to control the outlets. It also allows for devices designed to utilize DC power to be directly supplied with such power from the DC power rail without the need to include onboard AC-DC converters with each device.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: June 27, 2017
    Assignee: IVANI, LLC
    Inventors: Matthew Wootton, John Wootton, Justin McKinney, Lloyd Herbert King, Jr.
  • Patent number: 9673632
    Abstract: A method for providing power to a computer data center includes distributing a fluid through a single common domain throughout the computer data center building; converting the fluid into electrical energy at a plurality of electric power generation units that are distributed through the computer data center and connected to receive fluid from the common domain; and providing electrical power from the plurality of power generation units to corresponding electrical loads distributed throughout the computer data center building.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: June 6, 2017
    Assignee: Google Inc.
    Inventors: Anand Ramesh, Jimmy Clidaras
  • Patent number: 9525286
    Abstract: A method and system is provided for achieving power shut down or disconnect at individual solar panel level for a DC solar power system. The system provides fail safe power disconnect for emergencies or electrical system maintenance. A high-frequency current source signal is transmitted over DC power lines to each junction box of a photovoltaic panel array. The high frequency signal is transmitted concurrently with the DC power, and is isolated from an inverter by an inductor. A communications receiver circuit controls the PV panel to short circuit the PV panel output terminals and disconnect the PV panel from the output terminals in response to the high-frequency signal.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: December 20, 2016
    Assignee: TYCO ELECTRONICS CORPORATION
    Inventor: Raymond Howard Kohler
  • Patent number: 9373965
    Abstract: The present invention belongs to the field of utilization of distributed power generations and smart power management and, relates to an electric power router with multiple power supply modes; it includes a control unit, a communication module, a bidirectional alternate/direct current converter, a switch array, a direct current power line, two alternate current power lines, a power line measuring module, and router ports; wherein, the router ports include a plurality of power source ports and load ports; the switch array includes a single throw switch for grid connection and a plurality of double throw switches, all of which are controlled by the control unit; the direct current power source ports of the router ports are connected to the direct current power line, the direct current power line is connected to the second alternate current power line through the bidirectional alternate/direct current converter; the alternate current power source ports and load ports are connected through two alternate current p
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: June 21, 2016
    Assignee: TIANJIN UNIVERSITY
    Inventors: Yingshu Liu, Zhichao Li, Xiaorui An
  • Patent number: 9293923
    Abstract: An energy storage system including: a battery; a power conditioning system coupled to the battery, switches coupleable to an internal load of the power conditioning system, the battery, a grid, or an external load; and a controller to: receive energy usage cost information of the grid and residual capacity information of the battery; determine which of an energy of the battery or the grid is to be provided to the external load, and to determine which of the energy of the battery or the grid is to be provided to the internal load, according to the energy usage cost information and the residual capacity information; and control the switches according to the determination to provide the energy of the battery or the grid to the external load, and to provide the energy of the battery or the grid to the internal load.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: March 22, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Seong-Joong Kim
  • Patent number: 9124090
    Abstract: A circuit breaker is configured to provide both AC and DC protected power. The circuit breaker is packaged in a housing that includes a tripping module, a DC power supply, an AC load terminal, and a DC load terminal. The tripping module senses and responds to electrical faults by interrupting power, and the DC power supply converts received AC power to DC power. In some embodiments, the circuit breaker may be configured as a main breaker of a circuit breaker panel, while in other embodiments the circuit breaker may be configured as a branch circuit breaker that occupies a single branch circuit breaker mounting location in a circuit breaker panel. Methods of assembling a circuit breaker are also provided, as are other aspects.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: September 1, 2015
    Assignee: Siemens Industry, Inc.
    Inventor: Gustavo Cortes Rico
  • Patent number: 9058766
    Abstract: A device and method for detecting a short circuit in an electrical component during a start-up routine. In an embodiment, a device may have a problematic display having a short circuit that may result in damage to other components of the device if the device were allowed to fully startup during a normal start-up routine. Thus, power supplied to the panel may be initiated in stages so as to monitor any current that may be flowing through the panel, which in turn, may be indicative of a short circuit in the panel. If enough “leakage” current is detected through the panel during this staged startup routine, then a short-circuit detection circuit may interrupt the startup routine and lock out the operation of the device until the detected short circuit in the panel can be addressed.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: June 16, 2015
    Assignee: STMICROELECTRONICS (SHENZHEN) R&D CO. LTD
    Inventors: HaiBo Zhang, Jin Li
  • Publication number: 20150145331
    Abstract: The present disclosure includes circuits and methods for controlling the operation of a switching regulator. Closing and opening high side and low side switches may be controlled so that an inductor current may be used to charge and/or discharge an intermediate switching node when both switches are open. In one embodiment, delays between a low-to-high transition and a high-to-low transition of an AC stage may be cycled over multiple periods of a DC stage.
    Type: Application
    Filed: June 26, 2014
    Publication date: May 28, 2015
    Inventors: Nicolas Stephane Monier, David Christian Gerard Tournatory
  • Publication number: 20150137597
    Abstract: Electrical power is dynamically managed among one or more power sources and one or more loads. A plurality of monitor nodes is connected to an input terminal connected to each source, and to an output terminal connected to each load. A plurality of electrical power storage cells is connected among the input and output terminals, each cell being capable of storing power from at least one of the sources and being capable of discharging stored power to at least one of the loads. A plurality of controllable switches is connected to the cells. Master and slave controllers dynamically monitor operating conditions at the monitor nodes during operation of each source and each load, and selectively dynamically control the switches to interconnect the cells in different circuit topologies in response to the monitored operating conditions.
    Type: Application
    Filed: January 8, 2015
    Publication date: May 21, 2015
    Inventor: Alex M. ADELSON
  • Patent number: 9035492
    Abstract: Systems and methods are described herein for managing the operations of a microgrid module. The microgrid module includes transformers and/or power converters necessary for modifying the input AC or DC power sources to meet the required characteristics of the output power. The microgrid module further comprises a power management software module and a control software module installed on a microgrid computer. The power management software module uses received business parameters to create rules for applying to the operation of the microgrid module. The rules are stored locally at the microgrid computer so that they can be quickly accessed by a control software module. The control software module uses the rules in combination with data collected from sensors installed in the physical circuitry layer of the microgrid module to control the operations of the microgrid module.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: May 19, 2015
    Assignee: Science Applications International Corporation
    Inventor: Landon Cabell Garland Miller
  • Publication number: 20150130277
    Abstract: Systems and methods are provided for creating and operating a Direct Current (DC) micro-grid. A DC micro-grid may include power generators, energy storage devices, and loads coupled to a common DC bus. Power electronics devices may couple the power generators, energy storage devices, and loads to the common DC bus and provide power transfer.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Inventors: Arne BALLANTINE, Chad PEARSON, Ranganathan GURUNATHAN, Prasad PMSVVSV, Alberto DORONZO
  • Publication number: 20150102670
    Abstract: A method for operating an electronic device is provided. The method includes charging a battery of the electronic device. The method also includes receiving a booting input. The method further includes determining a remaining capacity of the battery. The method includes determining a charging mode of the battery when the remaining capacity of the battery is within a reference range. The method also includes booting in a booting mode corresponding to the charging mode.
    Type: Application
    Filed: October 10, 2014
    Publication date: April 16, 2015
    Inventors: Dong-IL Son, Kyoung-Sik Yoon, Young-Ho Chang
  • Patent number: 9000609
    Abstract: An extension cord with AC and DC output, includes a first conducting line coupled to a positive end of a DC source and a first end of an AC source, a second conducting line coupled to a negative end of the DC source, a third conducting line coupled to a second end of the AC source, a first socket, and a second socket. The first socket includes a first node, a second node a third node respectively coupled to the first conducting line, the second conducting line, and the third conducting line. The second socket includes a fourth node, a fifth node and a sixth node respectively coupled to the first conducting line, the second conducting line, and the third conducting line. The second node floats when the first socket is provided with the AC output. The third node floats when the first socket is provided with the DC output.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: April 7, 2015
    Assignee: National Tsing Hua University
    Inventors: Ching-Tsai Pan, Po-Yen Chen, Yu-Hsiang Lee, Hao-Chien Cheng
  • Publication number: 20150069837
    Abstract: A system comprises a fixture and a controller that is configured to power the fixture from an alternating current (AC) source and a direct current (DC) source. The controller is configured to automatically switch from powering the fixture from the DC source to powering the fixture from the AC source in response to a time of day. Related systems, methods and computer program products are described.
    Type: Application
    Filed: October 20, 2014
    Publication date: March 12, 2015
    Inventors: Mark Covaro, Dave Leonard
  • Publication number: 20150061388
    Abstract: A converter is described, in particular a DC/DC converter for use in a motor vehicle, including: a converter circuit, which is situated between a first network and a second network to convert a direct current or alternating current at an input terminal on the input side into a direct current or alternating current at the output terminal on the output side, the direct current or alternating current on the input side and the direct current or alternating current on the output side being based on a shared potential; a first monitoring circuit, which is situated between the input terminal and the converter circuit to detect a current flow into the converter circuit; a second monitoring circuit, which is situated between the output terminal and the converter circuit to detect a current flow into the converter circuit; a first separation element, which is situated between the input terminal and the converter circuit to establish a connection between the input terminal and the converter circuit and/or a second separ
    Type: Application
    Filed: November 5, 2012
    Publication date: March 5, 2015
    Inventors: Juergen Haeffner, Albert Geiger, Domenic Garcea
  • Publication number: 20150035361
    Abstract: Embodiments of the present invention include a power supply device having one or more converters (DC/DC and/or AC/DC) that convert input power supplied from one or more power sources, and a secondary battery which is charged by receiving power supplied from power sources. In addition, however, the power supply device has the unique feature of increasing power output by serially connecting the secondary battery to the DC/DC converter and/or AC/DC converter. In this regard, the secondary battery may comprise a Lithium Ion battery.
    Type: Application
    Filed: October 21, 2013
    Publication date: February 5, 2015
    Applicant: IKS CO., LTD.
    Inventor: Takashi Imai
  • Publication number: 20150039141
    Abstract: Control systems and devices for fuzzy logic control are disclosed. The devices may include various inputs, outputs, and levels thereof that may be controlled, for example by a logic controller.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 5, 2015
    Inventors: Macam S. Dattathreya, Harpreet Singh
  • Publication number: 20150021993
    Abstract: Hazard detection systems according to embodiments described herein are operative to provide failsafe safety detection features and user interface features using circuit topology and power budgeting methods that minimize power consumption. The safety detection features can monitor environmental conditions (e.g., smoke, heat, humidity, carbon monoxide, carbon dioxide, radon, and other noxious gasses) in the vicinity of the hazard detection system associated and alarm occupants when an environmental condition exceeds a predetermined threshold.
    Type: Application
    Filed: July 17, 2014
    Publication date: January 22, 2015
    Inventors: Ian C. Smith, Daniel Adam Warren, Scott Mullins, Brian Jonathan Conner
  • Publication number: 20150000842
    Abstract: A power supply system 90 includes high frequency power supplies 92 and 93 that supply a high frequency power for plasma generation; a DC power supply 91 that supplies a DC voltage to be applied to an electrode; and control unit 94 that controls the high frequency power supplies 92 and 93 and the DC power supply 91 including a first DC power supply unit 101 that supplies a first negative DC voltage V1, a second DC power supply unit 102 that supplies a second negative DC voltage V2 having a higher absolute value than the first negative DC voltage V1, and a selecting circuit 103 that selectively connects the first DC power supply unit 101 and the second DC power supply unit 102 to the electrode; and a discharging circuit 104 connected with a node 109 between the first DC power supply unit 101 and the selecting circuit 103.
    Type: Application
    Filed: February 19, 2013
    Publication date: January 1, 2015
    Inventors: Taichi Hirano, Fumitoshi Kumagai
  • Publication number: 20140375125
    Abstract: A multilayer control framework for a power system includes a hybrid storage system (HSS) to store energy using a plurality of energy storage devices; a local controller coupled to the HSS to smooth output power of wind or photovoltaic energy sources while regulating a State of Charge (SoC) of the HSS; and a system-wide controller coupled to the HSS activated upon an occurrence of one or more energy disturbances with a control strategy designed to improve system dynamics to address the one or more energy disturbances.
    Type: Application
    Filed: May 31, 2014
    Publication date: December 25, 2014
    Applicant: NEC Laboratories America, Inc.
    Inventors: Yanzhu Ye, Ratnesh Sharma
  • Publication number: 20140354051
    Abstract: A power supply system includes an input stage converting circuit, a first energy storage component, and an output stage converting circuit. The first energy storage component is electrically coupled to the input stage converting circuit, and the output stage converting circuit is electrically coupled to the first energy storage component. The input stage converting circuit is configured to charge the first energy storage component, and the first energy storage component stores charging electricity. The output stage converting circuit is configured to convert the charging electricity into output electricity and provide the output electricity to a load. The input stage converting circuit has a first electric power, and the output stage converting circuit has a second electric power greater than the first electric power. A method for converting power of the power converter is also disclosed herein.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 4, 2014
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Xing-Kuan GUO, Li-Tao XIA
  • Publication number: 20140346872
    Abstract: There is provided a power supply apparatus for power converters which convert power generated by power generators into power to be supplied to a power system. The power supply apparatus includes a photovoltaic power cell for the power converters, the photovoltaic power cells generating power for supplying power of the power converters.
    Type: Application
    Filed: August 14, 2014
    Publication date: November 27, 2014
    Applicant: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
    Inventor: Eiichi IKAWA
  • Publication number: 20140239718
    Abstract: A system for the management of rack-mounted field replaceable units (FRUs) that affords the enhanced availability and serviceability of FRUs provided by blade-based systems but in a manner that accommodates different types of FRUs (e.g., in relation to form factors, functionality, power and cooling requirements, and/or the like) installed within a rack or cabinet.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: ORACLE INTERNATIONAL CORPORATION
    Inventor: Thomas E. Giles
  • Patent number: 8816528
    Abstract: A mobile power system comprises a plurality of energy sources, wherein at least one energy source is a solar powered generating device and at least one energy source is a wind powered generating device; a plurality of electronic and telecommunications components configured to receive the power generated by the plurality of energy sources and/or convert the power generated to direct current power; a plurality of batteries configured to store the direct current power; and one or more transportable housings configured to hold the plurality of energy sources, the plurality of electronic and telecommunications, and the plurality of batteries during transport of the housing, and wherein the at least one solar powered energy device and the at least one wind powered generating device are disposed remotely from the housing when the mobile power system is in operation.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: August 26, 2014
    Assignee: Sundial Power Pods, LLC
    Inventors: Eldon Prax, Stan Waldrop
  • Publication number: 20140217820
    Abstract: Embodiments of the present invention include a power supply device having one or more converters (DC/DC and/or AC/DC) that convert input power supplied from one or more power sources, and a secondary battery which is charged by receiving power supplied from power sources. In addition, however, the power supply device has the unique feature of increasing power output by serially connecting the secondary battery to the DC/DC converter and/or AC/DC converter. In this regard, the secondary battery may comprise a Lithium Ion battery.
    Type: Application
    Filed: October 21, 2013
    Publication date: August 7, 2014
    Applicant: IKS CO., LTD.
    Inventor: Takashi Imai
  • Publication number: 20140183950
    Abstract: A method and system is provided for achieving power shut down or disconnect at individual solar panel level for a DC solar power system. The system provides fail safe power disconnect for emergencies or electrical system maintenance. A high-frequency current source signal is transmitted over DC power lines to each junction box of a photovoltaic panel array. The high frequency signal is transmitted concurrently with the DC power, and is isolated from an inverter by an inductor. A communications receiver circuit controls the PV panel to short circuit the PV panel output terminals and disconnect the PV panel from the output terminals in response to the high-frequency signal.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 3, 2014
    Applicant: TYCO ELECTRONICS CORPORATION
    Inventor: Raymond Howard KOHLER
  • Patent number: 8736102
    Abstract: The multifunctional power converter apparatus and method includes an input power stage configured to receive a DC input voltage from a DC power source and convert the DC input voltage to an AC or DC output voltage. At least one electrical power conversion electronic circuit is connected to an output of the input power stage, a DC output circuit; an AC output circuit; and a controller configured to control the input power stage, the DC output circuit and the AC output circuit. The controller is configured to automatically control the power converter output voltage based on a preselected user input.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: May 27, 2014
    Assignee: The Boeing Company
    Inventors: Lijun Gao, Shengyi Liu, Kamiar J. Karimi
  • Publication number: 20140132068
    Abstract: The invention relates to a multilevel electronic power converter for n output voltage levels with a positive branch (POS) with a positive DC voltage terminal (1), a negative branch (NEG) with a negative DC voltage terminal (2), and an AC voltage terminal (3) connected to the positive branch (POS) and to the negative branch (NEG); at least two DC bus capacitors (4) interconnected between the positive DC voltage terminal (1) and negative DC voltage terminal (2) and an intermediate DC voltage terminal (5) connected between the two DC bus capacitors (4); at least two first external semiconductors (6) and at least two second external semiconductors (7) with respective antiparallel diodes connected in series, respectively, in the positive (POS) and negative (NEG) branches between the DC voltage terminal (1, 2) and the AC voltage terminal (3); at least one high-current DC capacitor (11) connected between the positive (POS) and negative (NEG) branches, and at least two high-frequency low-current capacitors (12, 13
    Type: Application
    Filed: April 29, 2011
    Publication date: May 15, 2014
    Applicant: INGETEAM POWER TECHNOLOGY, S.A.
    Inventors: Mikel Zabaleta Maeztu, Jesús López Taberna, Eduardo Burguete Archel
  • Publication number: 20140132069
    Abstract: The invention is a portable power supply having a built in battery, switch matrix, external voltage and impedance sensing means, inverter, and charging circuitry. The device uses a power plug for receiving AC from a wall electric receptacle; a transformer for transforming high voltage input to a low voltage output; a rectifier, for rectifying the low alternating voltage to direct voltage; at least one battery rechargeable by said direct voltage; an inverter, for inverting direct voltage supplied by the rechargeable battery to relatively low alternating voltage, which is supplied to the secondary winding of the transformer; and an alternating current (AC) socket, for receiving high voltage from the primary winding of the transformer. Both AC and DC of various voltages may be supplied by this device in a portable manner, which uses a single transformer both for recharging batteries and for supplying AC power produced via the batteries.
    Type: Application
    Filed: June 26, 2012
    Publication date: May 15, 2014
    Inventor: Yaakov Shmuel Haim Ben Aharon
  • Patent number: 8704403
    Abstract: A power generation system for feeding power from generators into an AC grid, the system comprising a plurality of inverters connected to corresponding ones of the generators, and connected to the AC grid is disclosed. The plurality of inverters forms part of a data network, wherein one of the inverters forms a communication unit for receiving feed-in parameters from a grid control system and for controlling the plurality of inverters via the data network such that the power generation system feeds power to the AC grid in accordance with the feed-in parameters.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: April 22, 2014
    Assignee: SMA Solar Technology AG
    Inventors: Stefan Boerger, Peter Drews
  • Publication number: 20140097683
    Abstract: A microgrid power generation system includes a plurality of generators having a plurality of different rated capacities and a plurality of distribution nodes, at least some of the distribution nodes being powered by the generators. A grid is formed by the distribution nodes, the grid includes a system frequency. A plurality of loads are powered by the grid through the distribution nodes, the loads have a power demand. A processor includes a plurality of efficiency bands, each of the efficiency bands being for a corresponding one of the generators and including a plurality of generator switching points based upon droop of the system frequency and the power demand of the loads. The processor is structured to operate the generators and the loads under transient conditions based upon the efficiency bands.
    Type: Application
    Filed: September 17, 2013
    Publication date: April 10, 2014
    Applicant: EATON CORPORATION
    Inventors: DAMRONGRIT PIYABONGKARN, EDWARD F. BUCK, STEVEN A. DIMINO
  • Publication number: 20140084687
    Abstract: An improved solar energy utilization system is described based on the use of a smart load center which can automatically select the use of utility power or solar-derived power independently for each of a number of load circuits based on availability of utility and solar power, preset user priorities, battery charge status, time of day, instantaneous consumption, historical consumption patterns and weather forecasts.
    Type: Application
    Filed: October 24, 2013
    Publication date: March 27, 2014
    Inventor: Paul Wilkinson Dent