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104results about How to "Power loss" patented technology
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Communication across an inductive link with a dynamic load
ActiveUS20100171369A1Minimize powerAverage power consumptionNear-field transmissionBatteries circuit arrangementsEngineeringElectric power
Owner:PHILIPS IP VENTURES BV
Wireless charging device
InactiveUS20130300350A1Improve efficiencyLow calorific valueTobacco devicesElectric powerElectricityElectrical resistance and conductance
A wireless charging device comprises an electronic switch and a transmitting coil (L1) electrically connected with a power source in sequence. A control end of the electronic switch is connected with a transmitting control unit. The wireless charging device further comprises a current limiting resistance (R1) connected in serial with the transmitting coil. The wireless charging device further comprises a compensation capacitor (C1) connected in parallel with the transmitting coil. An insert total electromagnetic coupling structure is further employed for charging. Such wireless charging device is particularly suitable for electronic cigarette, with low cost, stable and reliable working status and high efficiency, and specific heat sink is not required.
Owner:KIMREE HI TECH
Washing machine
InactiveUS20070125135A1Avoid serious failuresGeneration of noise wellOther washing machinesWashing machine with receptaclesWash waterEngineering
A washing machine, more particularly, an improvement in the structure of a drive unit included in a drum type washing machine is disclosed. The washing machine includes a tub for receiving wash water therein, a drum rotatably disposed in the tub and adapted to wash laundry received therein, a shaft penetrated through the tub to thereby be connected to the drum, the shaft being adapted to transmit a drive force of a motor to the drum, a stator coupled fixedly to a rear wall portion of the tub, and a rotor including at least one magnet, a back yoke defining a magnetic path, and a rotor frame rotatably disposed at the outside of the stator, the rotor frame being connected to the shaft so as to transmit a rotating force of the rotor to the shaft. The rotor frame includes a side wall portion and a rear wall portion, and is made of an aluminum material.
Owner:LG ELECTRONICS INC
Communication across an inductive link with a dynamic load
ActiveUS8450877B2Minimize powerAverage power consumptionNear-field transmissionElectromagnetic wave systemEngineeringElectric power
Owner:PHILIPS IP VENTURES BV
System and method for direct injection of gaseous fuel into internal combustion engine
InactiveUS7117830B1Reduce exhaustReduce volumeValve arrangementsElectrical controlExhaust valveTop dead center
A method for an engine capable of burning gaseous fuel, the engine also including a combustion chamber, at least one intake valve, and at least one exhaust valve, an injector to directly inject pressurized gaseous fuel into the combustion chamber, and a variable valve timing system coupled to the intake valves and exhaust valves, the method comprising closing the exhaust valve before top dead center of piston position to increase combustion chamber pressure achieved at top dead center and to trap exhaust gas in the cylinder; and starting injection of a gaseous fuel directly into the combustion chamber after the exhaust valve is closed and before the intake valve is opened.
Owner:FORD GLOBAL TECH LLC
Plasma processing apparatus
ActiveUS20080197780A1Good repeatabilityImprove reliabilityElectric discharge tubesElectric arc lampsElectricityHigh frequency power
A plasma processing apparatus includes a first high frequency power for outputting a first high frequency, electrically connected to a first electrode disposed inside a depressurizable processing chamber; a heater power supply electrically connected to a heating element provided in the first electrode via filter circuits for reducing noise of the first high frequency. The plasma processing apparatus further includes air core primary inductors provided in primary stages of the filter circuits when seen from the heating element; and a grounded conductive case for surrounding or accommodating the primary inductors.
Owner:TOKYO ELECTRON LTD
Wireless charging device
InactiveUS9018899B2Low heat generationArea evenTobacco devicesElectric powerElectromagnetic couplingElectricity
Owner:KIMREE HI TECH
Switching power supply circuit
InactiveUS20070024255A1Reduce power consumptionLower requirementApparatus with intermediate ac conversionElectric variable regulationResonanceEngineering
Enhancement of the power conversion efficiency and reduction of switching noise of a power supply circuit are achieved. The power supply circuit includes, on the primary side, a composite resonance type converter formed from a current resonance type converter and a partial voltage resonance circuit in combination, and is configured so as to produce a plurality of secondary side DC output voltages. A particular one of the plural secondary side DC output voltages is controlled to a constant voltage by variably controlling the switching frequency of a primary side switching converter. Each of the remaining secondary side DC output voltages is controlled to a constant voltage by adjusting the level of control current to be supplied to a controlling winding of a control transformer in response to the level of the secondary side DC output voltage to adjust the inductance of a controlling winding of the control transformer inserted in a rectification current path.
Owner:SONY CORP
Voice Coil Module
ActiveUS20080304154A1Avoid power outagesAvoid optical distortionVehicle headlampsVehicle sub-unit featuresCamera lensControl power
The present invention relates to a voice coil module (VCM), and more particularly, to a VCM used for lens fixation and displacement measurement in order to prevent and control power consumption. Accordingly, in the VCM, power is not additionally consumed in order to maintain a specific position of the lens in a state that a focus of the lens is adjusted. Further, the lens is not moved and an optical axis is not distorted when a vibration occurs while an image is captured. Furthermore, the lens can be accurately controlled by measuring the present position of the lens.
Owner:SK HYNIX INC
Vehicle cooling system
InactiveUS20120085512A1Battery power lossMaximum efficiency lossExhaust apparatusSilencing apparatusEngineeringRefrigerant
The disclosure relates to a cooling system and a method for operating the cooling system for cooling a battery of a vehicle using a coolant circuit. The cooling circuit includes a pump device, a heat exchanger for transferring heat between a coolant and the battery, a heat exchanger for transferring heat between the coolant and the surroundings, and a heat exchanger for transferring heat between the coolant and a refrigerant circulating in a refrigerant circuit. The refrigerant circuit is designed with a heat exchanger and an associated expansion element. The refrigerant circuit includes two additional expansion elements. The first expansion element is arranged upstream of the heat exchanger and the second expansion element is arranged downstream of the heat exchanger, with regard to the direction of the refrigerant flow. The heat exchangers designed as evaporators on the refrigerant side can be operated with different pressure and temperature levels.
Owner:HANON SYST
Storage time control
InactiveUS20140355314A1Reduce control signalingHigh first amplitudeTransistorEfficient power electronics conversionSwitching cycleTime delays
We describe a method of controlling turn off time delay of a switching device of a switch mode power converter (SMPC). The SMPC has an inductive component comprising an input winding coupled to receive power from an input; and a switching device to, when on, conduct input winding current. In embodiments the method comprises applying turn on and turn-off signals to the switching device; applying at least one turn off signal, to initiate turning off of the switching device, and detecting a sensing signal from a further winding of the inductive component, inductively coupled to the input winding, to thereby indicate an end of a turn off time delay or duration. The method controls the turn on signal for a subsequent switching cycle of the SMPC device to regulate the turn off delay time.
Owner:POWER INTEGRATIONS INC
Vehicular hybrid drive system
ActiveUS20130253744A1Improve fuel economyPower lossHybrid vehiclesDigital data processing detailsDynamoDriving mode
A hybrid drive system configured to selectively establish one of a first drive mode in which a first motor / generator MG1 is operated with a drive force of an engine, to generate an electric energy and in which a vehicle drive force is generated primarily by a second motor / generator MG2, and a second drive mode in which the vehicle drive force is generated by the engine, and at least one of the first motor / generator MG1 and second motor / generator MG2 is operated to generate an assisting vehicle drive force, as needed, and further configured such that an amount of a working oil to be supplied to the first motor / generator MG1 is larger in the first drive mode than in the second drive mode, permitting sufficient cooling of the electric motor depending upon a selected one of the vehicle drive modes.
Owner:TOYOTA JIDOSHA KK
Soft-magnetic, amorphous alloy ribbon and its production method, and magnetic core constituted thereby
ActiveUS20120154084A1Low iron-lossHigh lamination factorLayered productsArc welding apparatusAlloyRing doughnut
A soft-magnetic, amorphous alloy ribbon produced by a rapid quenching method, having transverse lines of recesses formed on its surface by laser beams with predetermined longitudinal intervals, with a doughnut-shaped projection formed around each recess; doughnut-shaped projections having smooth surfaces substantially free from splashes of the alloy melted by the irradiation of laser beams, and a height t2 of 2 μm or less; and a ratio t1 / T of the depth t1 of the recesses to the thickness T of the ribbon being in a range of 0.025-0.18, thereby having low iron loss and low apparent power.
Owner:HITACHI METALS LTD
Power gate placement techniques in three-dimensional (3D) integrated circuits (ICs) (3DICs)
ActiveUS9754923B1DistancePower lossSemiconductor/solid-state device detailsSolid-state devicesVoltage sourcePower gating
Power gate placement techniques in three-dimensional (3D) integrated circuits (ICs) (3DICs) are disclosed. Exemplary aspects of the present disclosure contemplate consolidating power gating circuits or cells into a single tier within a 3DIC. Still further, the power gating circuits are consolidated in a tier closest to a voltage source. This closest tier may include a backside metal layer that allows a distance between the voltage source and the power gating circuits to be minimized. By minimizing the distance between the voltage source and the power gating circuits, power loss from routing elements therebetween is minimized. Further, by consolidating the power gating circuits in a single tier, routing distances between the power gating circuits and downstream elements may be minimized and power loss from those routing elements are minimized. Other advantages are likewise realized by placement of the power gating circuits according to exemplary aspects of the present disclosure.
Owner:QUALCOMM INC
Crankshaft lubrication system
Owner:HONDA MOTOR CO LTD
Forward converter with magnetic component
A forward converter comprises a magnetic component with a transformer and a filter output inductor. Also disclosed is a method for assembly of a forward converter. A first and a second U / UR core are arranged to form an O-core. Windings of the transformer are arranged on the O-core. A bobbin-less U / UR core is arranged to abut the O-core, and windings of a filter output inductor are arranged directly on a body section of the bobbin-less U / UR core. Alternatively, windings of the transformer are arranged on a first section of an E / ER core, and windings of the filter output inductor are arranged directly on a second, bobbin-less section of the E / ER core.
Owner:DELTA ELECTRONICS (THAILAND) PUBLIC CO LTD
Power conversion apparatus and method of controlling the same
ActiveUS20080101103A1Easy loadingDeteriorate reliability of switchingEfficient power electronics conversionConversion with intermediate conversion to dcTiming generatorTransformer
A power conversion apparatus includes a series circuit having a first switching element and a second switching element, the series circuit being connected to a DC power source in parallel, a resonant circuit including a capacitor and a primary winding of a transformer, the resonant circuit being connected to one of the first and second switching elements in parallel, an intermittent signal generator, a controller to control the start and stop of a switching operation of the first and second switching elements according to the intermittent signal, a current detector to detect a resonant current passing through the resonant circuit, and a timing generator to generate a timing signal when the detected resonant current satisfies a resonant condition. After the switching operation of the first and second switching elements is suspended according to the intermittent signal, the controller resumes the switching operation in response to the timing signal.
Owner:SANKEN ELECTRIC CO LTD
High frequency power amplifier circuit and radio communication system
InactiveUS7123094B2Power efficiency is satisfactoryIncrease in circuit sizeEnergy efficient ICTGain controlCommunications systemControl power
Providing a high frequency power amplifier circuit and a radio communication system which can control output power by a power voltage, produce sufficient output power in high regions of demanded output power and improve power efficiency in low regions of demanded output power. In a high frequency power amplifier circuit (RF power module) which comprises two or more cascaded FETs for amplification and controls output power by controlling power voltages of the FETs for amplification to gate terminals of which bias voltages of a predetermined level are applied, different transistors for power voltage control are provided for a last-stage FET for amplification and preceding-stage FETs for amplification. The transistors for power voltage control generate and apply the power voltage so that the preceding-stage FETs for amplification saturate when a demanded output level is relatively low.
Owner:RENESAS TECH CORP
Calculating power loss for inductive power transmission
ActiveUS20140001879A1Avoid heatAvoid heatingNear-field transmissionTransformersTime informationElectric power transmission
The invention proposes a method of calculating power loss in an inductive power transfer system comprising a power transmitter (112) for transmitting power inductively to a power receiver (110) via transmitter coil (114) and receiver coil (104), the method comprising a step of obtaining, by power transmitter, time information for time alignment to enable the power transmitter to align the time of calculating the power loss with the power receiver; and a step of calculating power loss during power transfer according to the obtained time information and received power parameter communicated from the power receiver.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Crankshaft lubrication system
InactiveUS20080190699A1Reduce leakageJournal is reducedCrankshaftsConnecting rodsInternal combustion engineCrankpin
A crankshaft of an internal combustion engine has journals provided with shaft oil passages for carrying the oil to crankpins, and guide grooves having parts in which the shaft oil passages open, respectively, and opening in the cylindrical surfaces of the journals, respectively. The guide grooves has downstream end parts into which the shaft oil passages open, respectively, and extend in a circumferential direction in which the crankshaft rotates from the downstream end parts, respectively. First half bearing members of bearings are provided in their bearing surfaces with oil grooves through which the oil is supplied to the guide grooves, respectively. Each of the oil grooves are diametrically opposite to each of the guide grooves. The oil grooves have an axial width (W5) smaller than the axial width (W3) of the guide grooves. Thus oil leakage from gaps between each of the bearings and each of the journals of the crankshaft is reduced and hence an oil pump having a small capacity can be used.
Owner:HONDA MOTOR CO LTD
Reduced power consumption X-ray source
InactiveUS8804910B1Minimizing capacitive power lossPower lossX-ray tube electrodesX-ray tube vessels/containerX-rayAlternating current
A reduced power consumption x-ray source comprising:In one embodiment, an x-ray tube including an infrared heat reflector disposed inside an x-ray tube cylinder between the cathode and the anode and oriented to reflect a substantial portion of infrared heat radiating from a filament back to the filament, thus reducing heat loss from the filament.In another embodiment, an alternating current source for an x-ray tube filament including a switch for allowing power to flow to the filament for a longer or shorter time depending on the desired output x-ray flux.In another embodiment, a neutral grounded, direct current (DC) high voltage, power supply with parallel high voltage multipliers, each supplied by separate alternating current sources, but both the output of one alternating current source connected to ground and the input of another alternating current source connected to ground. The output of both high voltage multipliers are connected.
Owner:MOXTEK INC
Snubber circuit and buffering method for snubber circuit
ActiveUS20150055262A1Long reverse recovery timeReducing/eliminating power lossEfficient power electronics conversionDc-dc conversionCharge currentRelative maximum
A snubber circuit includes a capacitor and a buffer device. The buffer device has a first terminal and a second terminal. The first terminal is electrically connected to the capacitor. When the buffer device operates in a first conduction mode, a charge current flows from the second terminal to the first terminal through the buffer device. When the buffer device switches from the first conduction mode to a second conduction mode, the buffer device generates a discharge current which flows from the first terminal to the second terminal through the buffer device over a specific period of time, such that after the buffer device enters the second conduction mode, a relative maximum voltage level appearing first at the second terminal is lower than a voltage level at the first terminal.
Owner:SPI ELECTRONICS
Power factor correction circuit
InactiveUS20100309699A1Reduce power lossReduce the chance of changeAc-dc conversion without reversalEfficient power electronics conversionOvercurrentEngineering
A power factor correction circuit includes a filter capacitor interposed between AC input terminals, a first inductor interposed between the first end of the filter capacitor and an input of a first rectifying bridge circuit, and a second inductor interposed between the second end of the filter capacitor and another input of the first rectifying bridge circuit. The power factor correction circuit further includes a second rectifying bridge circuit including inputs connected to AC input terminals, and outputs connected to a smoothing capacitor. A control circuit controls switching devices in the first rectifying bridge circuit. The power factor correction circuit can facilitate preventing an overcurrent from flowing through diodes and parasitic diodes in the switching devices, using a simple configuration.
Owner:FUJI ELECTRIC CO LTD
Amplifier arrangement and method of signal amplification
ActiveUS20070018729A1Reduces high-frequency power lossExtended operating timeHigh frequency amplifiersGain controlAudio power amplifierImpedance transformer
An amplifier arrangement is proposed which has an amplifier with adjustable amplification having an output. An impedance transformer circuit is connected to the output. Said circuit is designed for transforming a high output impedance of the adjustable amplifier into a low impedance at its output. The amplifier arrangement contains at least two switchable elements having a reactance, which elements are connected in each case by a first terminal to the output of the impedance transformer circuit, and by a second terminal to a reference potential terminal. The switchable elements are designed for changing the impedance at the output of the impedance transformer circuit depending on a switch position of a switching means. A load impedance at the output of the amplifier is consequently varied by simple means when the output level of the amplifier changes.
Owner:APPLE INC
Enclosed switchgear
InactiveUS6927356B2Shorten the lengthFrictional forceContact mechanismsWing accessoriesContact pressureSwitchgear
In a switchgear, oscillation of a moving current-carrying shaft and a moving contact of a vacuum valve is minimized, offset load on the contact surface is reduced, and friction the portion supporting the moving current-carrying shaft is reduced. A vacuum valve is disposed in a gas tank, one end of a moving current-carrying shaft integrally includes a moving contact of the vacuum valve, and a contact pressure adjusting spring is disposed on the other end of the moving current-carrying shaft. An operating rod extends through the gas tank, an operation mechanism is mounted on the operating rod outside the gas tank, an insulating rod is mounted inside the gas tank, and the contact pressure adjusting spring is joined to the insulating rod.
Owner:MITSUBISHI ELECTRIC CORP
Uninterruptible power supply system
ActiveUS20140054967A1Power lossReduce power consumptionBatteries circuit arrangementsEnergy industryEngineeringAC power
An uninterruptible power supply system, including: a plurality of uninterruptible power supply devices which are connected in parallel with respect to a load, and switch between power supplies supplying power to the load depending on states of the power supplies; a control unit controlling an operation of switching between the power supplies by the uninterruptible power supply devices; and a storage battery connected to the plurality of uninterruptible power supply devices in common. The uninterruptible power supply device has a converter converting AC power of an AC power supply into DC power, a contactor switching between the DC power converted by the converter and DC power input from the storage battery, and an inverter inverting the DC power into AC power and supplying the power to the load. The control unit deactivates the converter which does not contribute to supplying a power amount required for the load, of a plurality of converters.
Owner:TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP
Plasma processing apparatus with filter circuit
ActiveUS7712436B2Good repeatabilityImprove reliabilityElectric discharge tubesElectric arc lampsElectricityHigh frequency power
Owner:TOKYO ELECTRON LTD
Method and apparatus for discharging an energy store in a high-voltage power supply system
ActiveUS20130002209A1Simple to realizeAccelerate far dischargingBatteries circuit arrangementsElectric powerEngineeringHigh pressure
A method and to a device for discharging an energy store, in particular an intermediate circuit capacitor, in a high-voltage power supply system, in particular a DC voltage intermediate circuit in a motor vehicle, a first discharge resistor being connected parallel to the energy store, and a second discharge resistor automatically being connected parallel to the first discharge resistor when a voltage at the energy store falls below a specified threshold value.
Owner:ROBERT BOSCH GMBH
Converter station
InactiveUS20090168473A1Improve reliabilityEasy constructionAc-dc conversion without reversalElectric power transfer ac networkTransverterControl equipment
A converter station for connecting an AC system to an HVDC transmission line. At least two converters are arranged in two separate converter valve halls. The station includes a separate control device configured to control of each converter and an auxiliary power source configured to provide auxiliary power for each converter. A separate overall control configured to control the overall operation conditions is arranged for each converter making each converter self supporting. The converter valve halls are separated by a substantial space.
Owner:ABB POWER GRIDS SWITZERLAND AG
Switching power supply circuit
InactiveUS20100085780A1Reduce power lossCheap and compactEfficient power electronics conversionAc-dc conversionCharge and dischargeZener diode
In a RCC type switching power supply circuit, a sensing coil connected magnetically closely with an output coil is equipped in a fly-back transformer. The sensing coil is connected with a timing condenser through a Zener diode and an alternate current voltage output from the sensing coil is rectified and smoothed. Then, the difference between a detection voltage detected as a direct current voltage of the secondary side and the basic voltage of the Zener diode is supplied to the timing condenser to change the discharge / charge time and then change the timing of the switching of a first switching element in order to control the switching time of the first switching element. At the same time, applying the voltage which results from rectifying and smoothing the output voltage from the sensing coil, the charge and discharge of the timing condenser at the non-loading time is controlled in order to prolong the cycle of the switching oscillation and consequently, reduce the power loss.
Owner:HEP TECH
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