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348results about "Constant-current supply dc circuit" patented technology
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Photovoltaic systems with maximum power point tracking controller
ActiveUS20150188415A1Simulator controlAnalogue computers for nuclear physicsFuzzy inferenceEngineering
A system and a method provide a photovoltaic system which regenerates the output characteristics of the photovoltaic at different ambient condition with high precision under all environmental conditions. The photovoltaic system includes a photovoltaic array, a buck / boost converter, a DC link capacitor to connect the buck / booster converter to a load / inverter, an adaptive network-based fuzzy inference maximum power point tracking controller, a voltage control loop, a proportional integral controller to maintain the output voltage of the photovoltaic array to the reference voltage by adjusting the duty ratio of buck / boost converter.
Owner:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS +1
Methods and apparatus for controlling electric appliances during reduced power conditions
InactiveUS6891478B2Reduce power consumptionReduced power conditionProgramme controlPower network operation systems integrationElectricityDistribution system
An electric power monitoring system includes a source monitor for measuring momentary power output of an electric source supplying electric power to a power distribution system having at least one electric load. The momentary power output is compared with a reference load capability for the electric source to determine the ability of the electric source to support additional load, and load capability data is transmitted based on the load capability. At least one load control receives the transmitted load capability data and controls the supply of power to the at least one corresponding electric load based on the load capability data.
Owner:GARDNER JAY WARREN
Device for curtailing electric demand
InactiveUS6621179B1Dc source parallel operationConstant-current supply dc circuitPower gridEnergy management system
A device for curtailing electric demand is suitable as a tool for responding to the real-time pricing of electrical energy or for reducing demand during power shortages. The device (104) according to the present invention works in conjunction with an energy management system (40), which receives demand signals from an electric meter (24). Upon executing a curtailment command sent to the device (104) through a communications network (48, 50, 102), device intercepts and biases the signal going to the energy management system (40), which, in effect, coerces it to reduce the demand upon the meter (24) and upon the electric grid (20).
Owner:HOWARD JOHN E
Power distribution with digital current control
InactiveUS6841979B2Minimum power consumptionEfficient power electronics conversionAc-dc conversionControl powerCurrent sensor
Power distribution apparatus, for controlling supply of a current from an electrical power source to at least one load, includes a current sensor, which is coupled to provide an indication of a magnitude of the current flowing to the at least one load. A current limiter is adapted, responsive to the indication, to apply a pulse width modulation to the current drawn from the source so as to maintain the magnitude of the current flowing to the at least one load within a predetermined limit.
Owner:CISCO TECH INC
Intelligent power port
InactiveUS20080140565A1Quality improvementLow costFinancePower network operation systems integrationControl powerElectrical current
An intelligent power port device comprising an outlet providing power and a controller located adjacent the outlet which monitors current and voltage at the outlet, and which is programmable to control power supplied by the outlet. The controller is in electrical communication with controllers of other intelligent power port devices, forming an intelligent power port network.
Owner:DEBENEDETTI VITTORIO G +1
Power converter circuitry and method
InactiveUS20040095020A1Easy to makeBatteries circuit arrangementsEfficient power electronics conversionControl systemEngineering
A control system and method for simultaneously regulating the operation of a plurality of different types of switching power converters. The system utilizes in regulating the power converters sampled data and nonlinear feedback control loops.
Owner:EXAR CORP
Electrical appliance energy consumption control methods and electrical energy consumption systems
InactiveUS20060095164A1Mechanical power/torque controlLevel controlDistribution power systemVia device
Electrical appliance energy consumption control methods and electrical energy consumption systems are described. In one aspect, an electrical appliance energy consumption control method includes providing an electrical appliance coupled with a power distribution system, receiving electrical energy within the appliance from the power distribution system, consuming the received electrical energy using a plurality of loads of the appliance, monitoring electrical energy of the power distribution system, and adjusting an amount of consumption of the received electrical energy via one of the loads of the appliance from an initial level of consumption to an other level of consumption different than the initial level of consumption responsive to the monitoring.
Owner:BATTELLE MEMORIAL INST
Method and system for managing power delivery for power over ethernet systems
ActiveUS20060149978A1Easy to useIncrease powerEnergy efficient ICTPower supply for data processingElectricity deliveryEngineering
Owner:CISCO TECH INC
Method and system for managing power delivery for power over Ethernet systems
ActiveUS7509505B2Easy to useIncrease powerEnergy efficient ICTPower supply for data processingElectricity deliveryEngineering
Owner:CISCO TECH INC
Supercapacitor-based grid fault ride-through system
InactiveUS20120280569A1Improve power densityImprove efficiencyFlexible AC transmissionBatteries circuit arrangementsDynamic modelsEngineering
The supercapacitor-based grid fault ride-through system provides a dynamic model of a wind generation system including a Voltage Source Converter (VSC), which functions as a Static Compensator (STATCOM). The power control capability of the STATCOM is extended by incorporating energy stored in a supercapacitor. The system implements a vector control technique based on the decoupling of real and reactive power. Simulation results show that a fixed speed induction generator is capable of withstanding a significant grid fault when aided by the supercapacitor-based grid fault ride-through system. Moreover, the induction generator regains its pre-fault status immediately after the fault is cleared.
Owner:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Primary side regulated power supply system with constant current output
ActiveUS20070182387A1Low costDc-dc conversionElectric light circuit arrangementEngineeringSecondary side
According to an embodiment, a power supply system has a primary side and a secondary side. An input terminal on the primary side is operable to receive an input voltage. An output terminal on the secondary side is operable to be connected to a load for providing current thereto. Circuitry is provided which is operable to regulate the power supply system from the primary side so that the current provided to the load at the output terminal is substantially constant.
Owner:SEMICON COMPONENTS IND LLC
Source and multiple loads regulator
InactiveUS20120176826A1Maximise its operationImprove efficiencyAc-dc conversion without reversalLoad balancing in dc networkEngineeringLoad regulation
A circuit that has one or more control units that divide a load into two or more load groups, with each load group comprised of at least one load element. The one or more control units directing power from a power source to one or more of the load groups based on voltage variations in an output of the power source, load grouping, and operational parameters of the load elements. The circuit further includes one or more pass stages that regulate current flow from the power source to the load groups.
Owner:BRAXTON ENG
Power distribution system with fault protection using energy packet confirmation
InactiveUS8068937B2Not to damageElectric signal transmission systemsBatteries circuit arrangementsEnergy transferNetwork packet
Owner:VOLTSERVER INC
Lamp base with electrical device recharging receptacle and method
A lamp base having an electrical device recharging receptacle configured to receive a plug from a recharging device for a portable rechargeable electronic device. The receptacle is configured as a standard automobile cigarette lighter receptacle. The receptacle includes standard cigarette lighter receptacle electrical contacts that are connected to a voltage and current conversion circuit for receiving standard household voltage and converting it into standard automotive voltage and current.
Owner:PATEL BHARAT
Managing Power Allocation To Ethernet Ports In The Absence Of Mutually Exclusive Detection And Powering Cycles In Hardware
ActiveUS20080244282A1Avoid problemsVolume/mass flow measurementData switching current supplyPower cycleEngineering
A method of allocating power to ports in an Ethernet switch, including: (1) assigning a configuration power to a selected port, wherein the assigned configuration power is less than a power supplied by the selected port to a powered, (2) enabling and powering the selected port in a single indivisible step, (3) determining the power limit of a device coupled to the selected port, (4) comparing the power supplied by the selected port to the device with the configuration power assigned to the selected port, and (5) if the power supplied by the selected port to the device is greater than the configuration power assigned to the selected port, then increasing the configuration power of the selected port to correspond with the power limit of the device.
Owner:ARRIS ENTERPRISES LLC
Wireless power receiving device, and wireless power transmission device
ActiveUS20150001956A1Avoid breakingMinimize time delayNear-field transmissionTransformersElectric power transmissionOvervoltage
To provide a wireless power receiving device, and a wireless power transmission device capable of improving the reliability of a protection circuit while preventing breakage of a circuit element upon occurrence of any abnormality, such as overvoltage or overcurrent. A wireless power receiving device includes a power receiving coil; a rectifier unit that performs full-wave rectification of the power received by the power receiving coil and supplies the power to a load; power-receiving-side detecting unit that detects an output voltage value or an output current value from the rectifier unit; and switching unit that short-circuits one of two current paths through the rectifier unit if the value detected by the power-receiving-side detecting unit exceeds a predetermined reference value.
Owner:TDK CORPARATION
Management System for In-House Power Quantity Consumed
InactiveUS20080106146A1Efficient power consumptionEfficiently controlling powerLevel controlConstant-current supply dc circuitPower sensorElectrical devices
The present invention relates to a management system for in-house power consumption, more particularly to a management system for in-house power consumption efficiently performing in-house power consumption by means of estimating power consumption of each operation of in-house electric devices. The present invention provides a management system for in-house power consumption comprising: at least one or more electric devices (30, 40, 50, 60) which comprise a communication means and transmit current operation information via the communication means on a given network; an power sensor module (20) that measures an instantaneous power consumption of the total electric devices and transmit it on the network; and a power consumption controller (70) that saves a previously received the operation information and the instantaneous power consumption and estimates the power consumption of each electric device (30, 40, 50, 60) on the basis of the saved operation information and instantaneous power consumption and the currently received operation information and instantaneous power consumption.
Owner:LG ELECTRONICS INC
Power Distribution System with Fault Protection Using Energy Packet Confirmation
InactiveUS20090204268A1Safely transfer energyNot to damageBatteries circuit arrangementsLevel controlEnergy transferNetwork packet
The disclosed power distribution system regulates the transfer of energy from a source 1 to a load 3. Source Controller 5 on the source side closes Disconnect Device 7 and monitors the transfer of a pulse or “packet” of energy to the load side. A Load Controller 9 on the load side communicates the amount of energy received at the load back to the source controller via Communication Link 11. If it is confirmed that the energy received on the load side corresponds to that sent by the source side, another energy packet is sent. If the energy received does not correspond with that sent by the source side, energy transfer is stopped, indicating a system fault or safety hazard. The energy content of a single packet is kept small, such that if it is not properly delivered, it can not cause damage to equipment or harm personnel.
Owner:VOLTSERVER INC
Energy management system and method
ActiveUS7705484B2Power network operation systems integrationConstant-current supply dc circuitEngineeringEnergy expenditure
An energy management system comprises at least one energy consuming device and an energy controller. The energy controller supplies energy to the energy consuming device and transmits an energy curtailment signal in response to an energy over-consumption condition. In one embodiment, the curtailment signal can be directed to a predetermined class of energy consuming device. In another embodiment, the energy consuming device can determine whether to curtail energy consumption in response to the curtailment signal. The energy controller can be in the form of a power strip.
Owner:WHIRLPOOL CORP
LED driving circuit having silicon controlled rectifier light modulator, circuit module and control method
ActiveCN106912144AReduce the average bleed currentImprove efficiencyElectroluminescent light sourcesConstant-current supply dc circuitSilicon-controlled rectifierPower flow
The invention discloses an LED driving circuit having a silicon controlled rectifier light modulator. A bleeder current of the silicon controlled rectifier light modulator at a conduction start stage in each AC period and a bleeder current after conduction and till being lightening of an LED load are distinguished, a bleeder circuit is controlled to bleed in a first relatively large current when the silicon controlled rectifier light modulator is at the conduction start stage, the bleeder circuit after conduction is controlled to bleed in a second relatively small current, an average bleeder current of the bleeder circuit in each period can be reduced, bleeder loss can be further reduced, and efficiency of the LED driving circuit is improved.
Owner:SILERGY SEMICON TECH (HANGZHOU) CO LTD
Drying mode for automatic clothes dryer
ActiveUS7594343B2Drying using combination processesDrying solid materials with heatProcess engineeringDrying time
A method of drying clothes in a clothes dryer comprising a clothes chamber for receiving clothes, an air supply system for directing air through the clothes chamber, and a heater for heating the air supplied by the air supply system. The method comprises cycling the heater between an ON state by energizing the heater until a heater trip condition is met and an OFF state by deenergizing the heater until a heater reset condition is met, determining a heater off time by determining the time between the heater trip condition and the heater reset condition, and determining a drying time based on the heater off time.
Owner:WHIRLPOOL CORP
Energy Efficient Power Supply
InactiveUS20080290731A1Batteries circuit arrangementsBoards/switchyards circuit arrangementsElectrical and Electronics engineering
There is disclosed a power supply, a system, and method. A power supply may include a power converter for converting AC primary power into DC power, an internal load, and a DC power plug for delivering DC power from the power supply to a load external to the power supply. The power converter may include a standby circuit to place the power converter into a low power quiescent operating mode. A switch may be integrated into the DC power plug, the switch having an operate state and a standby state. The switch may control the flow of power from the power converter to the internal load.
Owner:SL POWER ELECTRONICS
Power supply device and method for detecting non-contact state of load connected to power supply device
ActiveUS20110210746A1For direct connectionSure easyCharging stationsElectric devicesElectrical batteryCapacitor voltage
A power supply device includes a battery 1, positive and negative-side contactors 3A and 3B, and a controller 10. The battery 1 supplies power to a load 20. The positive-side contactor 3A is serially connected to the positive side of the battery 1. The negative-side contactor 3B is serially connected to the negative side of the battery 1. The controller 10 determines whether the load 20 connected to the output sides of the positive-side contactor 3A and the negative-side contactor 3B is in a connected or non-contact state. The controller 10 includes a voltage detecting circuit 12 that detects the capacitor voltage of a capacitor 21 connected to the output sides of the positive-side contactor 3A and the negative-side contactor 3B, and a determination circuit 13 that compares the detected voltage with a predetermined voltage and determines the connected state of the load 20.
Owner:SANYO ELECTRIC CO LTD
Switching constant-current power supply
InactiveUS6909249B2Stable load currentStable currentElectroluminescent light sourcesApparatus without intermediate ac conversionEngineeringFeedback circuits
Disclosed herein is a switching constant-current power supply which comprises: a switching-system power converter for supplying a predetermined current to a load; a current detector for generating a feedback signal in correspondence with the load current; a controller for driving the power converter in correspondence with the feedback signal; and a feedback circuit, which is provided between the current detector and the controller, and comprises a signal holding unit, the feedback circuit supplying either a first feedback signal, output from the current detector, or a second feedback signal, output from the signal holding unit, to the controller; the size of the second feedback signal being approximately equal to the first feedback signal at a given time.
Owner:TOKYO
Switching power converter controller with watchdog timer
Switching power converter controller providing control of plurality of switching power converters which provide power to a host microprocessor. A watchdog timer included in the switching power converter controller is configured to countdown a timer unless it receives a reset signal from the host microprocessor. The switching power converter controller is configured to assert a reset command for the host microprocessor if the watchdog timer expires and to not de-assert the reset command until the plurality of switching power converters are operating as desired.
Owner:EXAR CORP
Method and system for organizing and optimizing electricity consumption
A method and system for managing power consumption by electrical appliances, is provided. One implementation involves obtaining power consumption information for a use cycle of a each of multiple appliances; and automatically scheduling a time slot for an operation cycle of a selected appliance as a function of power consumption by appliance cycles scheduled in that time slot, such that an upper limit of power consumption is not exceeded by the collective power consumption for scheduled appliance cycles in the time slot.
Owner:IBM CORP
Apparatus and methods for operating an electric appliance
Owner:HAIER US APPLIANCE SOLUTIONS INC
Electrical system with circuit limiter
ActiveUS8350406B2Electrical resistance across the signal conductors is reducedElectrical impedance elementsBoards/switchyards circuit arrangementsCoupling device detailsElectricityPower cable
Owner:BYRNE NORMAN R
Energy management system
InactiveUS20140191573A1Reduce interventionMinimal effortContact member manufacturingTransmission systemsEnergy management systemEmbedded system
The present invention provides an Energy Management System which can be configured to automatically switch peripheral appliances on or off by detecting master appliances being in standby state, even though these appliances are located far away from each other in a premise, or even in other premises. The system is also capable of detecting whether the included appliances are plugged or unplugged to facilitate simple and efficient management of appliance power consumption for the sake of energy saving. In one embodiment, it also provides a detachable, battery-powered wireless sub-system, supporting dual operation modes, to improve wireless coverage of the system.
Owner:KOOL KONCEPTS
Electrical system with circuit limiter
ActiveUS20120261988A1Electrical resistance across the signal conductors is reducedElectrical impedance elementsBoards/switchyards circuit arrangementsCoupling device detailsElectricityPower cable
An electrical power distribution system automatically limits the number of substantially similar or identical power cable assemblies that are electrically energizable from a power source. A control unit is connected between the power source and the power cable assemblies, and limits the number of power cable assemblies that can be energized in the system by sensing the voltage in a sensing circuit. An applied voltage in the sensing circuit changes in a predictable manner corresponding to the number of power cable assemblies that are electrically connected in the circuit. Each power cable assembly includes an impedance element that is added to the sensing circuit when the corresponding power cable assembly is coupled to the system, and once the detected voltage is beyond a predetermined threshold value, the control unit will ensure that the power cable assemblies are not energized by the power source.
Owner:BYRNE NORMAN R
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