With Control Of Magnitude Of Current Or Power Patents (Class 307/24)
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Publication number: 20110309677Abstract: A hybrid power plant is characterized by a substantially constant load on generators regardless of momentary swings in power load. Short changes in power load are accommodated by DC components such as capacitors, batteries, resistors, or a combination thereof. Resistors are used to consume power when loads in the power plant are generating excess power. Capacitors are used to store and deliver power when the loads in the power plant demand additional power. Reducing rapid changes in power load as seen by the generators allows the generators to operate at higher efficiencies and with reduced emissions. Additionally, power plants employing combinations of generators, loads, and energy storage devices have increased dynamic performance.Type: ApplicationFiled: June 16, 2010Publication date: December 22, 2011Inventor: Edward P. Bourgeau
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Publication number: 20110278921Abstract: The invention converts the electrical circuitry in a premises for use as an adaptive power bus to which one or more power generating devices may be connected using a standard electrical outlet, without the need for a separate dedicated circuit or any additional electrical wiring and continuing to operate as a traditional power bus, while preventing electrical circuitry from being overloaded. Embodiments of the adaptive power bus provide the advantage of being able to plug power generating devices directly into a standard electrical outlet without the need for a separate dedicated circuit or any additional electrical wiring, while protecting electrical circuitry from being overloaded by disabling power generating or power consumption devices exactly when needed, and re-enabling power generating and power consumption devices when a circuit overload condition is no longer present.Type: ApplicationFiled: May 11, 2010Publication date: November 17, 2011Inventors: Erik Jon Fretheim, Chad Maglaque
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Publication number: 20110266868Abstract: In a first condition, the sum of discharging power from a first battery stack and discharging power from a second battery stack is limited in accordance with the sum of a limit value of discharging power from the first battery stack and a limit value of discharging power from the second battery stack. In a second condition, electric power of the battery stacks is limited in accordance with either the limit value of discharging power from the first battery stack or the limit value of discharging power from the second battery stack.Type: ApplicationFiled: April 25, 2011Publication date: November 3, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaya YAMAMOTO, Itaru SETA
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Publication number: 20110266867Abstract: A set of network communications devices shares available power among themselves to meet overall system power loading. An individual device is configured to include a local power supply delivering power to a local power bus at a local supply voltage varied in response to a voltage control signal. A protection component is connected between the local power bus and an external power cable used to connect the device to another device for sharing power. The protection component provides an interruptible low-impedance DC path for carrying current based on direction and magnitude of a voltage difference between the local power bus and the external power cable.Type: ApplicationFiled: May 3, 2010Publication date: November 3, 2011Applicant: CISCO TECHNOLOGY INC.Inventors: Frederick Roland Schindler, Rudolph B. Klecka, III, Scott Lawrence Lennartz, John Alvin Herrmann, Yonghan Kang, Dylan Walker, Johnston Reid McGaughey
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Publication number: 20110227412Abstract: A DC voltage distribution system includes at least one load connected in parallel to a first DC power supply via a first distance of wire, and connected in parallel to a second DC power supply via a second distance of wire. The first and second DC power supplies are configured to enter a load sharing mode in which one of the first or second DC power supplies selectively increases its voltage to prevent the other of the first or second DC power supplies from exceeding its power output threshold. The DC power supplies are also configured to enter a load balancing mode in which the DC power supplies set their output voltages to the same value such that a flow of current on the longer of the wire distances is reduced and a flow of current on the shorter of the wire distances is increased.Type: ApplicationFiled: March 22, 2010Publication date: September 22, 2011Inventors: Jian Xu, Thomas Alan Barnett
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Publication number: 20110222258Abstract: According to one embodiment, an apparatus for providing node redundant power to a system includes a plurality of devices, with each device including a power supply. Each power supply includes a first direct current (DC) input coupled to a first input of an OR logic gate, and a second DC input representing by an alternating current (AC) input. The second DC input is coupled to a second input of the OR logic gate, and at least one DC output is coupled to an output of the OR logic gate. Each power supply also includes a backup power supply for supplying a voltage coupled to a common node. The OR logic gate provides DC voltage to the DC output to power the system from the first DC input only when voltage from the AC input is not available.Type: ApplicationFiled: March 14, 2010Publication date: September 15, 2011Applicant: International Business Machines CorporationInventors: Randhir S. Malik, Jan M. Janick
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Patent number: 8018695Abstract: A control apparatus for controlling a fuel pump includes: an electronic switch provided in a circuit for connecting a power supply to a motor for driving the fuel pump; a current detector which detects a current which flows through the motor; and a controller which controls the electronic switch in a first PWM mode of a first frequency and a first duty ratio in a normal operation; and change a PWM mode to control the electronic switch in a second PWM mode of a second frequency lower than the first frequency and a second duty ratio lower than the first duty ratio when the current flowing through the motor exceeds a threshold current value in the normal operation.Type: GrantFiled: March 5, 2009Date of Patent: September 13, 2011Assignee: Yazaki CorporationInventors: Akira Serizawa, Hiroo Yabe, Sadafumi Ikeda, Kouji Manabe, Akira Teranishi, Hironobu Takahashi
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Patent number: 8013474Abstract: In some embodiments, an apparatus or system may include multiple power extractors each coupled to a different power source. The power extractors may be in parallel or in series. The extractors and power supplies may be joined together in a frame. A power source and power extractor may be included in an integrated circuit. Other embodiments are described and claimed.Type: GrantFiled: July 7, 2007Date of Patent: September 6, 2011Assignee: XSLENT Energy Technologies, LLCInventors: David A. Besser, Stefan Matan
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Patent number: 8014905Abstract: An electricity demand limiting system for limiting the electricity consumption of at least one resistive load device. The demand limiting system includes a consumption controller associated with the resistive load device that is operable to infinitely vary the amount of electricity being consumed by the load device. The consumption control device is in operative communication with a load controller such that the load controller can generate a control signal to affect the operation of the consumption control circuit. Preferably, the consumption control circuit is a triac-based circuit that receives the control signal from the load controller and limits the amount of electricity consumed by the resistive load device. The load controller can receive input signals from sensors monitoring the electricity delivery system or from the premise electricity meter.Type: GrantFiled: March 7, 2007Date of Patent: September 6, 2011Assignee: Ranco Incorporated of DelawareInventor: Gregory A. Ehlers
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Publication number: 20110193410Abstract: An apparatus for controlling an energy system having at least one energy unit and at least one DC/DC converter, wherein the DC/DC converter is coupled to at least one electrical component, and a power output to the electrical component can be controlled by the DC/DC converter, with the maximum power which can be output to the electrical component being determined by a power limit value of the DC/DC converter. The invention provides that the energy unit and the DC/DC converter and the electrical component are coupled via a limit-value management system which controls the power output such that, when power is demanded from the electrical component above the power limit value of the DC/DC converter, power is output up to the maximum power limit value.Type: ApplicationFiled: February 11, 2011Publication date: August 11, 2011Applicant: ROBERT BOSCH GMBHInventors: Francis Glohr, Arthur Schaefert, Thomas Schneider
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Publication number: 20110187316Abstract: A system and method for implementing a multi-voltage multi-battery power management integrated circuit. Various aspects of the present invention provide a power management integrated circuit. The power management IC may comprise a first regulator module that receives a first battery power signal from a first battery characterized by a first battery voltage and outputs a first regulated power signal, based at least in part on the first battery power signal. The power management IC may also comprise a second regulator module that receives a second battery power signal from a second battery characterized by a second battery voltage and outputs a second regulated power signal, based at least in part on the second battery power signal. The second battery voltage may, for example, be substantially different than the first battery voltage. The power first and second regulated power signals may, for example, correspond to substantially different power supply voltages.Type: ApplicationFiled: April 11, 2011Publication date: August 4, 2011Applicant: BROADCOM CORPORATIONInventors: Sumant Ranganathan, Pieter Vorenkamp, Neil Y. Kim, Chun-Ying Chen
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Publication number: 20110184579Abstract: A power management system suitable for dynamically allocating power provided by a selected power source among one or more associated loads and methods for manufacturing and using same. In a normal operation mode, the power source provides power to one or more enabled loads. The selection of loads that are enabled, and therefore the provided power, can dynamically vary over time. If an undesired power condition arises, a power limiting mode is entered, wherein at least one of the enabled loads is disabled. The resultant power provided by the power source to the remaining enabled loads is measured, and the power limit mode is maintained until the undesired power condition is resolved. As needed, further corrective action, such as disabling additional enabled loads, can be applied to resolve the undesired power condition. The power management system thereby can comprise a hierarchical system for dynamically resolving undesired power conditions.Type: ApplicationFiled: December 14, 2010Publication date: July 28, 2011Inventors: Wayne T. Nilsen, Grant Edward Burrows
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Publication number: 20110175445Abstract: A fuel cell system including a fuel cell power-generating part, a state detector, a charging circuit, a secondary cell, a control unit, a first internal load power supply circuit, a second internal load power supply circuit, a path selection circuit, an internal load, and an external load power supply circuit is provided. The first internal load power supply circuit and the charging circuit are coupled to the fuel cell power-generating part. The secondary cell is coupled between the charging circuit and the second internal load power supply circuit. The path selection circuit determines whether the first internal load power supply circuit or the second internal load power supply circuit provides power to the internal load according to a first electric power of the fuel cell power-generating part that is detected by the state detector, so as to reduce energy consumption.Type: ApplicationFiled: December 27, 2010Publication date: July 21, 2011Applicant: YOUNG GREEN ENERGY CO.Inventors: Kuo-Tai Hung, Ken-Chih Chang
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Method and Apparatus for Controlling a Supply Current for a Circuit or a Plurality of Circuit Blocks
Publication number: 20110163598Abstract: A method for controlling a supply current for a circuit includes setting a target value of a quantity related to a supply current, said target value being different from a presently established value of the quantity, and adjusting the quantity until a value of the quantity corresponds to the target value. A method for controlling a supply current to a plurality of circuit blocks includes providing a plurality of partial supply currents to the plurality of circuit blocks, setting at least one target value of a quantity related to at least one of the partial supply currents, checking whether a predetermined condition which depends on the at least one set target value is achieved, and if the predetermined condition is not achieved, changing at least one among the at least one target values and the at least one partial supply currents to achieve the predetermined condition.Type: ApplicationFiled: March 21, 2011Publication date: July 7, 2011Applicant: Infineon Technologies AGInventor: Peter Mahrla -
Publication number: 20110140519Abstract: A power supply is used in a computer. The power supply includes a main power circuit, an auxiliary power circuit and a switching circuit. The main power circuit has a first main output terminal for outputting a first operating DC voltage. The auxiliary power circuit has an auxiliary output terminal connected to a standby circuit of the computer for outputting a standby DC voltage. The switching circuit is interconnected between the first main output terminal and the auxiliary output terminal. When the computer is in a power-off state, the switching circuit is shut off, and the standby circuit is powered by the standby DC voltage. When the computer is in a power-on state, the switching circuit is conducted, and the first operating DC voltage is transmitted to the standby circuit through the first main output terminal and the switching circuit so as to power the standby circuit.Type: ApplicationFiled: December 14, 2010Publication date: June 16, 2011Applicant: DELTA ELECTRONICS, INC.Inventors: Cheng-Yi Lo, Chen-Te Lin
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Patent number: 7952224Abstract: A discharge share ratio calculation unit (52) calculates, for each power storage device, a remaining electric power quantity before an SOC is reached with respect to which an allowable discharge electric power is restricted, and calculates a discharge power share ratio between power storage devices according to the ratio of the remaining electric power quantity. A charge share ratio calculation unit (54) calculates, for each power storage device, a chargeable quantity before an SOC is reached with respect to which an allowable charge electric power is restricted, and calculates a charge power share ratio between power storage devices according to the ratio of the chargeable quantity.Type: GrantFiled: September 27, 2007Date of Patent: May 31, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Sawada, Masayuki Komatsu
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Patent number: 7936081Abstract: A power converter control system for electric powertrains is disclosed. The power converter control system may include at least one power producing device and at least one power consuming device. The power converter control system may further include at least one power electronics module configured to convert and condition a flow of electrical current between the at least one power producing device and the at least one power consuming device. The at least one power electronics module may further be configured to serialize a flow of a first set of signals between the at least one power electronics module and at least one controller. The first set of signals may correspond to at least one characteristic of the at least one power electronics module.Type: GrantFiled: January 30, 2008Date of Patent: May 3, 2011Assignee: Caterpillar Inc.Inventors: Robert Wayne Lindsey, Jason Lee Miller
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Publication number: 20110095605Abstract: Power supply equipment is provided with two power ports for simultaneously powering two electronic devices. The equipment includes low power assemblies and high power assemblies, each of which is detachably mateable to either one of the power ports. To simultaneously power two low power devices, low power assemblies are respectively mated to each of the power ports. To simultaneously power one low power and one high power device, a low power assembly is mated to one of the power ports and a high power assembly is mated to the other power port. The low power assemblies transfer a low DC voltage, but not a high DC voltage, to low power devices. The high power assemblies transfer a high DC voltage, but not a low DC voltage, to high power devices. If a high power assembly is mated to each of the power ports, power flow is interrupted without putting supply in an overvoltage or overcurrent condition.Type: ApplicationFiled: October 28, 2009Publication date: April 28, 2011Applicant: COMARCO WIRELESS TECHNOLOGIES, INC.Inventor: THOMAS W. LANNI
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Publication number: 20110084551Abstract: Photovoltaic systems with managed output and methods for managing variability of output from photovoltaic systems are described. A system includes a photovoltaic module configured to receive and convert solar energy to DC power. The system also includes a sensor configured to detect a future change in solar energy to be received by the photovoltaic module. The system further includes a power conditioning unit coupled with the photovoltaic module and the sensor.Type: ApplicationFiled: October 12, 2009Publication date: April 14, 2011Inventors: Robert Johnson, Adrianne Kimber, Carl J. S. Lenox, Matt Campbell
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Patent number: 7902694Abstract: A method is provided for allocating and providing power to network devices. The method includes (i) receiving an electronic request to power a network device with a requested amount of power, (ii) establishing a worst-case current draw of the device in the event of a pre-defined maximum voltage slew rate, and (iii) selectively (a) allocating and providing power to the device when a remaining power capacity is greater than or equal to a provision voltage multiplied by the worst-case current draw of the device in the event of the maximum voltage slew rate, and (b) denying power to the device when the remaining power capacity is less than the provision voltage multiplied by the worst-case current draw of the device in the event of the maximum voltage slew rate. Apparatus are also provided for performing the method.Type: GrantFiled: November 8, 2007Date of Patent: March 8, 2011Assignee: Cisco Technology, Inc.Inventors: Frederick R. Schindler, Anoop Vetteth
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Patent number: 7876061Abstract: A method of operating a power system is provided, the power system having power-system controls. The method may include automatically setting a priority ranking for a plurality of generator units of the power system with the power-system controls based at least in part on an operating parameter of each generator unit indicative of a quantity of work done by the generator unit. The method may also include automatically controlling which of the generator units run with the power-system controls based at least in part on the priority ranking of the generator units.Type: GrantFiled: June 1, 2007Date of Patent: January 25, 2011Assignee: Progress Rail Services Corp.Inventors: Jeffrey Holt Wright, Roy Christopher Fonseca, Andrew William Black
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Patent number: 7863774Abstract: A multi-output power supply includes a standby power system and a main power system. The main power system has a transformer and a rectification output circuit connecting to the transformer to generate first output power. The power supply further has an output time series judgment circuit and a plurality of voltage regulation units connecting respectively to the standby power system and the rectification output circuit. The output time series judgment circuit has a preset reference potential compared with the potential of the first output power to determine whether to output a feedback signal. Each voltage regulation unit is connected to the output time series judgment circuit to receive the feedback signal and be activated normally and determine a regulation time spot to synchronously regulate the first output power to second output power. Thus the time difference for delivering the first output power and the second output power can be regulated.Type: GrantFiled: November 6, 2008Date of Patent: January 4, 2011Assignee: Zippy Technology Corp.Inventor: Yun-Chen Chen
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Publication number: 20100327655Abstract: A power supply apparatus (10) includes one first power device (30) and a plurality of second power devices (41, 42, and 43). The power supply apparatus is configured to operate simultaneously the first power device (30) and the plurality of the second power devices (41, 42, and 43) to supply a DC power therefrom to a load device (92). The first power device (30) has its output voltage of a DC voltage kept constant irrespective of a magnitude of an output current of the first power device (30). The second power devices (41, 42 and 43) have its output voltage of a DC voltage which decreases monotonically as an output current of the second power devices (41, 42, and 43) increases, respectively. The second power devices (41, 42, and 43) include an adjustment unit configure to adjust the output current in accordance with an instruction value for prescribing a magnitude of the output current.Type: ApplicationFiled: February 25, 2009Publication date: December 30, 2010Inventors: Shinichiro Okamoto, Takuya Kagawa, Hiroaki Koshin
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Patent number: 7852052Abstract: A supply circuit for an implantable medical device (IMD) is presented. The supply circuit includes a battery, a high current circuit, a current-modifying component, a low current circuit, and a capacitor. The low current circuit is connected to a first terminal of the battery. A current-modifying component is connected to the battery, a capacitor, and to a high current circuit.Type: GrantFiled: February 28, 2006Date of Patent: December 14, 2010Assignee: Medtronic, Inc.Inventor: Scott D. Vernon
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Publication number: 20100308652Abstract: A power converter that gives priority to the high power output and only provides power to the low power output when the total potential output power is equal to or less than the rated power of the power converter. A specific power threshold is established, and when the high power output remains below this threshold for a period of time the low power output is allowed to turn on. If the high power output subsequently exceeds this threshold for a period of time, then an electronic circuit powers down the low power output in order to keep the total output power below the rated power of the power converter. Subsequently, the high power output is checked against the threshold to determine if the low power output can be turned on again. If the high power output is below the threshold, then the low power output is turned on.Type: ApplicationFiled: July 15, 2010Publication date: December 9, 2010Applicant: IGO, INC.Inventors: Garry DuBose, Ann Briggs
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Publication number: 20100264731Abstract: A power conversion, control, and distribution system includes multiple bulk power regulator (BPR) subassemblies, a bulk power distribution (BPD) subassembly, and a bulk power controller and hub (BPCH) subassembly. The BPR subassemblies are each configured to provide regulated DC power from both AC input power and DC input power. The BPD subassembly is configured to distribute the regulated DC power. The BPCH subassembly is coupled to the multiple BPR subassemblies and the BPD subassembly. The BPCH subassembly is configured to monitor and control the BPR assemblies and the BPD assembly.Type: ApplicationFiled: April 16, 2009Publication date: October 21, 2010Applicant: INTERNATIONAL BUISNESS MACHINES CORPORATIONInventors: Ravi Kumar Arimilli, Edward Joseph Seminaro, Kevin Covi, Gerald J. Fahr, Daniel James Barus
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Publication number: 20100264732Abstract: A method for operating a photovoltaic system with a plurality of photovoltaic modules and with a DC motor connected to the photovoltaic modules is proposed. The motor shaft of the DC motor is coupled to a generator shaft of a three-phase generator, wherein the three-phase generator can be connected to a power grid. The motor shaft of a second DC motor can also be connected with the generator shaft, and the electric energy produced by the photovoltaic modules is initially only used for driving a single DC motor and is during the subsequent operation divided between those DC motors. A battery is provided which can be connected with the second DC motor instead of the PV system by changing the excitation of the second DC motor such that it's motor voltage corresponds to the open-circuit voltage of the battery.Type: ApplicationFiled: April 20, 2010Publication date: October 21, 2010Applicant: Adensis GmbHInventor: BERNHARD BECK
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Publication number: 20100246857Abstract: Provided is an electronic device which can prevent operation stop attributed to lowering of an electronic device operation voltage. A pre-stage of a power amplifier (24) is connected to a capacitor and a first and a second current limit circuit. A CPU (21) monitors a voltage of the capacitor and corrects a gain of the power amplifier (24) in accordance with the voltage value. Moreover, when the electronic device includes a speaker system having a plurality of channels, an audio signal reproduction mode is switched, for example, between a stereo reproduction and a monaural reproduction according to the voltage value of the capacitor.Type: ApplicationFiled: September 26, 2008Publication date: September 30, 2010Applicant: YAMAHA CORPORATIONInventor: Haruo Kajita
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Patent number: 7804287Abstract: A current-loop output circuit for an industrial controller provides for low power dissipation and reduced part count by driving current loads of different resistances directly from a switched voltage source. Proper filtering and design of a feedback loop allows the necessary transient response times to be obtained.Type: GrantFiled: February 28, 2007Date of Patent: September 28, 2010Assignee: Rockwell Automation Technologies, Inc.Inventors: Dale R. Terdan, Xiaofan Chen
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Publication number: 20100237696Abstract: A power management arrangement for a mobile device comprising a digital circuit block and an analog circuit block, the power management arrangement being arranged to supply a first voltage to the analog circuit and a second voltage to the digital circuit, the power management arrangement comprising: an input unit adapted to receive input voltages from a plurality of power sources; a first voltage regulator coupled to the input unit and for supplying the first voltage; a second voltage regulator for supplying the second voltage and arranged to be selectively coupled to one of the first voltage regulator and input unit; and control logic adapted to select which of the received input voltages from the plurality of power sources provides power to the first and second voltage regulators, and to determine the magnitude of the first and second voltages supplied by the first and second voltage regulators.Type: ApplicationFiled: October 17, 2007Publication date: September 23, 2010Applicant: Freescale Semiconductor, Inc.Inventors: Marianne Maleyran, Bertrand Clou
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Publication number: 20100238751Abstract: An electronic circuit includes multiple circuit elements arranged into multiple distinct subdivisions, each subdivision having a separate voltage supply connection for conveying power to the subdivision. The electronic circuit further includes a controller including multiple outputs, each of the outputs being connected to a corresponding one of the voltage supply connections. When a given one of the subdivisions does not include a weak circuit element, the controller supplies a first voltage level to the given subdivision via the corresponding voltage supply connection. When the given subdivision includes at least one weak circuit element, the controller is operative to supply at least a second voltage level to the given subdivision via the corresponding voltage supply connection, the second voltage level being greater than the first voltage level.Type: ApplicationFiled: January 30, 2008Publication date: September 23, 2010Applicant: AGERE SYSTEMS INC.Inventors: Richard Bruce Dell, Ross A. Kohler, Richard J. McPartland, Hai Quang Pham, Wayne E. Werner
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Publication number: 20100231040Abstract: A system, apparatus and method for increasing the reliability of an electric power transmission or distribution system by injecting controlled electric power into the transmission or distribution system using mobile electric power sources. The mobile electric power source may be a locomotive engine. The mobile electric power source may be controlled using an IED. The mobile electric power source may be controlled to provide active power or reactive power or act as a governor or exciter to the electric power transmission or distribution system.Type: ApplicationFiled: March 10, 2010Publication date: September 16, 2010Inventor: Edmund O. Schweitzer, III
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Patent number: 7783464Abstract: A card for simulating peripheral component interconnect (PCI) loads includes an interface configured for electrically connecting to a motherboard and a load circuit configured for simulating the different loads. The load circuit comprises at least one power module receiving a voltage from the interface. The power module is capable of changing resistance of the power module thereby to thermally consume various powers to simulate the different loads. Because the card consumes various power according to testing requirement, the stability of the motherboard can be tested in various load power without connecting actual PCI loads to the motherboard.Type: GrantFiled: August 4, 2006Date of Patent: August 24, 2010Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Yong-Xing You, Ke-You Hu, Hai-Qing Zhou, Feng-Long He
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Publication number: 20100194195Abstract: A radio frequency (RF) system includes a control module that allocates M predetermined frequency intervals. The system also includes N RF sources that each applies first RF power to electrodes within a plasma chamber at frequencies within an assigned respective one of the M predetermined frequency intervals. The N RF sources also each respond to second RF power including feedback from the plasma chamber. The N RF sources each include a processing module that adjusts the first RF power based on the second RF power and the respective one of the M predetermined frequency intervals. M and N are integers greater than 1.Type: ApplicationFiled: February 5, 2009Publication date: August 5, 2010Applicant: MKS Instruments, Inc.Inventors: David J. Coumou, Paul Eyerman, Carl Ioriatti, William Stenglein, Larry J. Fisk, II, Aaron Radomski, Richard Pham
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Publication number: 20100187906Abstract: A device includes a plurality of voltage regulators, and a test module. Each of the voltage regulators are configured to provide a regulated voltage to one of a plurality of subsystems. The test module is in communication with the voltage regulators, and is configured to perform a subsystem component inventory for each of the subsystems at a start of a power-on self-test of the device, to determine a configuration of the device. The test module is also configured to capture first voltage data for the subsystems during an idle operation, to capture second voltage data for the subsystems during a stressed operation, and to set a voltage set point for each of the regulated voltages provided by one of the voltage regulators based on the subsystem component inventory, a power requirement table, or the first and second voltage data.Type: ApplicationFiled: January 29, 2009Publication date: July 29, 2010Applicant: DELL PRODUCTS, LPInventors: Stuart A. Berke, Kunrong Wang
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Publication number: 20100141213Abstract: A power supply apparatus for a vehicle includes first and second batteries provided electrically in parallel to main loads, a boost converter provided between the first battery and the main loads, a boost converter provided between the second battery and the main loads, an auxiliary battery, a DC/DC converter, and an auxiliary load driven by power from the auxiliary battery or DC/DC converter. The controller determines charging currents or discharging currents for the batteries reflecting variations in a current flowing through the auxiliary load. Accordingly, a power supply apparatus for a vehicle can thus be provided in which imbalance between charging/discharging currents for a plurality of power storage devices is reduced.Type: ApplicationFiled: May 30, 2008Publication date: June 10, 2010Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takahide Iida
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Publication number: 20100133904Abstract: Systems, methods, and apparatus for supplying AC power to an AC power grid from a DC power source, such as a photovoltaic (PV) array are disclosed. The systems and methods can include a converter coupled to the DC power source that provides DC power to a DC bus at a DC bus voltage. The systems and methods can further include an inverter coupled to the DC bus for converting the DC power of the DC bus to an output AC power. The systems and methods can further include a control system configured to regulate the DC bus voltage of the DC bus to operate at a variable DC bus voltage setpoint. The control system can adjust the DC bus voltage setpoint based at least in part on the DC bus voltage and the output AC current of the inverter.Type: ApplicationFiled: October 26, 2009Publication date: June 3, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: ANTHONY MICHAEL KLODOWSKI, DAVID SMITH, ROBERT GREGORY WAGONER, SIDNEY ALLEN BARKER
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Patent number: 7719136Abstract: A control circuit for a power supply device, a power supply device, and the like are provided in which the power supply device has a plurality of DC/DC converters provided for generating voltage while the mutual relationship of potential between the voltage outputs is maintained. The control circuit 20 in the power supply device 10 which outputs different direct current voltages (VCC, VBGP, and VBGN) includes a voltage setting unit 22 for determining the setting level of a second direct current voltage VBGP which has a potential relationship with the setting level of the first direct current voltage VCC which is one of a plurality of the different direct current voltages.Type: GrantFiled: June 5, 2006Date of Patent: May 18, 2010Assignee: Fujitsu Microelectronics LimitedInventors: Toru Nakamura, Hidekiyo Ozawa
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Publication number: 20100109430Abstract: A system, method, and apparatus for controlling the supply of power for components of a vehicle. The system comprises a plurality of power modules or apparatuses, a J1939 bus, a plurality of electrical components, and a power supply. Each component is coupled to at least one power module, and the power modules are configured to supply power to electrical components coupled thereto. Each power module includes a controller, a plurality of power output lines, a plurality of pluggable power elements, and a power supply line. The controller is configured to electronically control at least one of the pluggable power elements for each power output line. Thus, the outputs of the power modules are configurable based on controlling the pluggable power elements.Type: ApplicationFiled: November 6, 2008Publication date: May 6, 2010Applicant: LOCKHEED MARTIN CORPORATIONInventors: Charles T. DiSaverio, Timothy Williams
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Publication number: 20100096918Abstract: A discharge share ratio calculation unit (52) calculates, for each power storage device, a remaining electric power quantity before an SOC is reached with respect to which an allowable discharge electric power is restricted, and calculates a discharge power share ratio between power storage devices according to the ratio of the remaining electric power quantity. A charge share ratio calculation unit (54) calculates, for each power storage device, a chargeable quantity before an SOC is reached with respect to which an allowable charge electric power is restricted, and calculates a charge power share ratio between power storage devices according to the ratio of the chargeable quantity.Type: ApplicationFiled: September 27, 2007Publication date: April 22, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hiroki Sawada, Masayuki Komatsu
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Publication number: 20100072816Abstract: An integrated circuit comprises a global power supply conductor, a plurality of circuit blocks, a plurality of voltage converters, and control logic. The global power supply conductor is configured to distribute a supply voltage. The circuit blocks are selectively coupled to the global power supply conductor. The plurality of voltage converters are coupled to the global power supply conductor. An output voltage of individual voltage converters of the plurality of voltage converters are selectively coupled to one or more of the plurality of circuit blocks. The control logic is configured to control the selective coupling of at least one of the supply voltage and the output voltage of individual voltage converters of the plurality of voltage converters to corresponding ones of the plurality of circuit blocks. Also, the control logic controls a magnitude of the output voltage of individual voltage converters of the plurality of voltage converters.Type: ApplicationFiled: September 19, 2008Publication date: March 25, 2010Inventors: Prashant U. Kenkare, Troy L. Cooper
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Patent number: 7675193Abstract: The present invention discloses a selective independent overload and group overload protection circuit of a power supply. In the power supply, each of a plurality of loads that require a larger power output has an independent overload protection circuit, and the load is connected to a group overload protection circuit, such that a user can select to turn on the independent overload protection circuit or a group overload protection circuit that allows a larger power output and facilitates the user to select an appropriate power output according to the capacity requirement of the load.Type: GrantFiled: July 10, 2007Date of Patent: March 9, 2010Assignee: Silverstone Technology Co., Ltd.Inventor: Hsin-Sheng Huang
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Patent number: 7671490Abstract: The power conversion system allows for multiple segregated and ground independent power sources to provide redundant power to modules within an electronics equipment cabinet with increased reliability and reduced sensitivity to common fault propagation. The power conversion system provides power conditioning modules having independent supply rails that supply power to each module within an electronics equipment cabinet. FET and diode solid-state control and driver logic enable each individual supply rail. Efficient power distribution is facilitated by primary and hot-backup operation of one or more power conditioning modules. Power conversion is facilitated by one or more input supply power feeds and one or more converter stages.Type: GrantFiled: October 17, 2005Date of Patent: March 2, 2010Assignee: Smiths Aerospace LLCInventors: David B. Hartung, Brian G. Krug
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Publication number: 20100026093Abstract: The present invention concerns a power backup processor unit 200 comprising a first AC input line 313 provided to be connected to an AC power supply; first and second AC output lines 315, 316 provided to be connected to a critical load 204, wherein the first AC output line 315; and a neutral line 314 provided to be connected to a neutral port. The power backup processor unit 200 also comprises first and second DC voltage busses 311,312 provided to be connected to a DC power supply 206; and a capacitor 207 as well as first, second and third half-bridge circuits 301,302,303 interposed between the first and second DC voltage busses 311,312. To said first and second DC voltage busses 311,312 the first half-bridge circuit 301 links the first AC input line 313, the second half-bridge circuit 302 the first AC output line 315 and the third half-bridge circuit 303 the neutral line 314.Type: ApplicationFiled: September 11, 2006Publication date: February 4, 2010Inventor: Paul Bleus
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Publication number: 20100001585Abstract: In order to provide an electric power system in which a plurality of electric power suppliers and demanders are configured by being mutually connected via electric power supply and demand control devices, the electric power system being not only self-sustainable without depending on a known electric power system, but also capable of coexisting with the known electric power system. The electric power system is such configured that a plurality of electric power suppliers and demanders 11 to 15 are mutually connected via an electric power supply and demand line W, the electric power supplier and demander being provided with power generation devices 101 and 151, electrical storage devices 102 and 152, a plurality of loads 103, and electric power supply and demand control devices 104 and 153.Type: ApplicationFiled: October 16, 2006Publication date: January 7, 2010Inventor: Satoshi Nagata
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Publication number: 20090315396Abstract: A converter ECU controls a converter to transmit an electric power between a power storage device and a power storage unit through a main positive bus line and a main negative bus line during temperature rise control of the power storage device. Specifically, converter ECU sets a target voltage of the converter to a second voltage value lower than a first voltage value when a voltage value reaches the first voltage value, and sets the target voltage of the converter to the first voltage value when the voltage value reaches the second voltage value.Type: ApplicationFiled: June 14, 2007Publication date: December 24, 2009Applicant: Toyota Jidosha Kabushiki KaishaInventors: Shinji Ichikawa, Tetsuhiro Ishikawa
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Patent number: 7612465Abstract: A apparatus and method of operating a power converter circuit is provided. The method selectively couples control signals to at least one output driver stage of a plurality of output driver stages of the power converter circuit to obtain a desired output at a select output port of the plurality of output ports. Wherein each output driver stage has a defined current drive capacity that is output to the select output port in response to the control signals.Type: GrantFiled: March 3, 2008Date of Patent: November 3, 2009Assignee: Intersil Americas Inc.Inventor: Lawrence G. Pearce
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Patent number: 7608942Abstract: An integrated circuit (103) having a plurality of integrated circuit portions (111, 113, and 115) where each of the plurality of integrated circuit portions receives a corresponding voltage of a plurality of voltages. Selection circuitry (127 and 123) selects a selected voltage of the plurality of voltages and provides an indication of the selected voltage to adjust the supply voltage to the integrated circuit. in one embodiment, the indication may correspond to an analog signal proportional to the selected voltage such as e.g. at the selected voltage or at a voltage less than or greater than the selected voltage. A power supply system (105), coupled to the integrated circuit, may be used to receive the indication of the selected voltage and adjust the supply voltage based on the indication.Type: GrantFiled: January 17, 2003Date of Patent: October 27, 2009Assignee: Freescale Semiconductor, Inc.Inventors: Christopher K. Y. Chun, Cornelis H. Voorwinden
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Publication number: 20090218885Abstract: The present invention discloses a slope control device capable of predicting uniform-current-sharing level and method thereof which can be applied in a redundancy or distributed power system for providing better uniform-current-sharing ability. The device comprises a high linearity transconductor circuit, a slope adjusting circuit and an incremental output voltage circuit. The invention applies either a transductor parameter or a feedback resistor to increase the droop gain and therefore the current deviation between two power supply modules is reduced. The invention further raises the output voltage step by step to ensure that the output voltage meet the requirement of allowable minimum output voltage according to increment of load current.Type: ApplicationFiled: February 28, 2008Publication date: September 3, 2009Applicant: NATIONAL CHIAO TUNG UNIVERSITYInventors: Hsin-Hsin Ho, Ke-Horng Chen, Chun-Yu Hsieh
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Publication number: 20090189446Abstract: A power converter control system for electric powertrains is disclosed. The power converter control system may include at least one power producing device and at least one power consuming device. The power converter control system may further include at least one power electronics module configured to convert and condition a flow of electrical current between the at least one power producing device and the at least one power consuming device. The at least one power electronics module may further be configured to serialize a flow of a first set of signals between the at least one power electronics module and at least one controller. The first set of signals may correspond to at least one characteristic of the at least one power electronics module.Type: ApplicationFiled: January 30, 2008Publication date: July 30, 2009Inventors: Robert Wayne Lindsey, Jason Lee Miller