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30results about How to "Increase self-inductance" patented technology
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Transformer unit, and power converting device
InactiveUS20080266042A1Reduce overlayLow costDc-dc conversionSolid-state devicesLow voltageTransformer
A transformer unit and a power converting device, which lessen the influence of noise caused by an external magnetic flux, while reducing the temperature dependency of a coupling coefficient, and which transfer signals while insulating a low-voltage and a high-voltage side electrically. Air-core type insulated transformers have a first and second winding of a primary winding as a sending side and a first and second winding of a secondary winding as a receiving side. The windings of the primary winding are connected in parallel and are wound so that the directions of magnetic fields generated by an exciting current oppose each other. The windings of the secondary winding are wound so that electromotive forces to be generated by an external magnetic flux cancel each other, and are connected in series so as to raise the electromotive forces by a signal magnetic flux generated by the primary winding.
Owner:FUJI ELECTRIC CO LTD
Mixed excitation permanent magnet flux switching motor
InactiveCN101820192AImprove tuning performanceReduced ampere-turnsMagnetic circuit rotating partsMagnetic circuit stationary partsTooth numberConductor Coil
The invention discloses a mixed excitation permanent magnet flux switching motor which comprises permanent magnets, three-phase armature windings and single-phase excitation windings, wherein the single-phase excitation windings are arranged on a stator, the tooth number of the stator is 4 times number of permanent magnets; and a rotor is in a salient pole structure and has no windings or permanent magnets, thereby having high mechanical strength and being suitable for high-speed operation. An air-gap field comprises an electric excitation magnetic field generated by the excitation windings and a magnetic field generated by the permanent magnets, and is flexibly adjusted by changing an excitation current. An electric excitation magnetic line of force is closed by using an iron core connecting magnetic bridge, which is beneficial to reducing the electric field ampere-turns and lowering the electric excitation copper loss. The armature windings and the excitation windings are distributed in different stator grooves at intervals, which is beneficial to increasing the self-inductance of the armature windings and the mutual inductance of the windings and effectively inhibiting the short circuit current of a motor.
Owner:CHANGZHOU INST OF TECH
Volumetric physiological measuring system and method
InactiveUS20080270067A1Reduce system complexityIncrease the number ofElectric/magnetic area measurementsElectric/magnetic contours/curvatures measurementsEngineeringElectromagnetic induction
Owner:VOLUSENSE AS
Volumetric physiological measuring system and method
InactiveUS6945941B2Minimize power consumptionReduce power supply capacityPerson identificationVolume/mass flow by electric/magnetic effectsEngineeringPhysiologic measurement
A system and method for measuring volumes and areas using electromagnetic induction techniques. A current is generated and fed into one of two coil assemblies to induce voltage into another coil assembly to provide accurate values for volume or area.
Owner:VOLUSENSE AS
Volumetric physiological measuring system and method
InactiveUS7390307B2Minimize power consumptionReduced power supply capacityPerson identificationMagnetic property measurementsElectromagnetic inductionVoltage
A system and method for measuring volumes and areas using electromagnetic induction techniques. A current is generated and fed into one of two coil assemblies to induce voltage into another coil assembly to provide accurate values for volume or area.
Owner:VOLUSENSE AS
High-power high-reliability six-phase permanent magnet fault-tolerant hub motor used for electric armored vehicle
ActiveCN108631459AAdd direct axis inductanceImproving the speed-up capability of magnetic field weakeningMagnetic circuit rotating partsElectric machinesFiberPermanent magnet rotor
The invention discloses a high-power high-reliability six-phase permanent magnet fault-tolerant hub motor used for an electric armored vehicle. The high-power high-reliability six-phase permanent magnet fault-tolerant hub motor comprises a stator assembly, a rotor assembly, a rotary shaft, a bearing, a machine shell, front back end covers, and a position sensor; the six-phase windings in the stator assembly adopt a fractional-slot and concentrated single-layer winding structure embedded with partition teeth, so that an electrical fault-tolerant structure can be formed between the phase windings; meanwhile, by combination of the dimensional design of the stator toothed groove structure, the phase winding inductance of the electric motor is increased, the short circuit current is suppressedeffectively, and reliability and fault-tolerant performance of the hub motor are improved; the rotor assembly adopts an internal permanent magnet rotor structure, and the outer side of the rotor is wound with a carbon fiber protection sleeve, so that the mechanical structural strength of the rotor is improved; the stator winding adopts a monocrystal copper wire or silver wire, so that stator lossof the hub motor is lowered; the permanent magnet of the rotor assembly adopts eccentric design, and is subjected to circumferential or axial sectioning processing, so that the rotor loss of the hub motor is lowered effectively; a Z-shaped or spiral heat dissipation water path is formed in the machine shell, so that the heat dissipation capability of the hub motor is improved; and the hub motor has high fault isolation, anti-short-circuit and weak magnetic diffusion capability, so that the requirements of high reliability, high power and high rotary speed of the hub driving of the electric armored vehicle can be satisfied.
Owner:北京北航天宇长鹰无人机科技有限公司
Microstrip isolation structure for reducing crosstalk
InactiveUS10090574B2Increase self-inductanceEffectively reducing the crosstalkWaveguidesEngineeringLength wave
Owner:WU CHIA HO
Microstrip isolation structure for reducing crosstalk
InactiveUS20170062893A1Effective limitSuppression of crosstalk effectsWaveguidesEngineeringLength wave
Owner:WU CHIA HO
Electromagnetic clutch
InactiveUS20060191765A1Reduce forceReduce the numberYielding couplingMagnetically actuated clutchesElectromagnetic clutchLeaf spring
An electromagnetic clutch (20) capable of connecting and disconnecting a driving power source and a rotary shaft (22) includes a rotor (25) rotated by the driving power source, and an armature (40) capable of being attracted to the rotor (25) by electromagnetic force to produce a transmission force transmitted from the rotor (25) to the rotary shaft (22). The electromagnetic clutch (20) further includes leaf springs (52) urging the armature (40) in such a direction as to separate the armature from the rotor (25). The leaf springs (52) each assume an orientation such that a boost force assisting the attractive force acting upon the armature (40) is produced based on the transmission force when the armature (40) is attracted to the rotor (40).
Owner:SANDEN CORP
Optimizing design method of planar coils of inductive power transfer (IPT) system based on LCL resonant topology
PendingCN110001423AIncreased mutual inductanceOptimal design parametersCharging stationsCircuit arrangementsFull bridgeEngineering
The invention discloses an optimizing design method of planar coils of an inductive power transfer (IPT) system based on LCL resonant topology. According to the IPT system, a primary side is a systempower supply and a rail cable, and the primary side power supply adopts a full-bridge LCL resonant topology structure; a secondary side is one or a plurality of rail guided vehicle (RGV) running on apower supplying rail, and electric power picking of the secondary side RGV adopts LC parallel-connection resonant inductive-power-taking coils; and the optimizing method of the coils comprises the flowing steps that step 1, the system output power is determined; step 2, the output efficiency is calculated; step 3, the geometrical size of the inductive-power-taking coils is determined; step 4, self-induction and mutual induction of the inductive-power taking coils are calculated; step 5, the system is optimized; step 6, a finite element simulation model of inductive-power-taking coils is established; and step 7, optimizing parameter calculation of an extreme point of the inductive-power-taking coils and simulation results of the magnetic conductive strip optimizing design are combined, andan optimum arranging mode of the inductive-power-taking coils is obtained. According to the optimizing design method of planar coils of an IPT system based on LCL resonant topology, the optimizing design method of the multi-parameter inductive-power-taking coils based on efficiency optimization is provided, and the energy transfer efficiency can be effectively improved.
Owner:HUBEI POLYTECHNIC UNIV
Planar inductor type magnetic sensor
ActiveCN107526046AIncrease self-inductanceIncrease the role of mutual inductanceMagnetic field measurement using permanent magnetsMagnetic sensor geometrical arrangementsPlanar inductorElectric control
The invention discloses a planar inductor type magnetic sensor. The planar inductor type magnetic sensor comprises an insulating non-magnetic conduction substrate, planar coils, magnetic conduction material layers and insulating layers; the planar coils are manufactured on the substrate; the surfaces of the planar coils, which are required to covered with the magnetic conduction material layers, are covered with the insulating layers at first, and then are covered with the magnetic conduction material layers; and the magnetic conduction material layers covering the planar coils are divided into a plurality of regions, the current directions of portions of the coils which are covered by each region are identical, and the magnetic conduction material layers which cover the conductors of the coils which have different current directions do not contact with each other, and gaps between the magnetic conduction material layers is larger than the thickness of the magnetic conduction material layers. According to the planar inductor type magnetic sensor, current directions in partial cushions of the magnetic conduction material layers / portions of the magnetic conduction material layers which cover the planar coils, are identical, so that the current of the coils will not be offset by each other in magnetic fields generated by the magnetic conduction material layers, and therefore, the self-inductance and mutual inductance effect of the magnetic conduction material layers exerted on the covered portions of the coils can be enhanced, and the influence of the magnetic conduction material layers on the overall inductance quantity of the coils is enhanced, and the action of the magnetic conductivity of the magnetic conduction material layers by the magnetic fields can be sensitively reflected in the change of the inductance quantity of the coils. The two coils are adopted, so that electric control magnetic bias can be generated for the sensor.
Owner:SHANGHAI JIAO TONG UNIV
System and method for analyzing spiral resonators
InactiveUS8831917B2Increase self-inductanceReduce demandMultiple-port networksTransformersCapacitanceCapacitive coupling
A spiral resonator is analyzed by modeling a set of loops of the spiral resonator with a model of a circuit including a set of units, wherein each unit includes a resistor and an inductor to model one loop of the spiral resonator. Values of the resistor and the inductor of each unit are based on properties of a corresponding loop. Electrical connection of the loops is modeled by electrically connecting the units in a corresponding order of the loops. A capacitive coupling in the spiral resonator is modeled by connecting adjacent units with at least one capacitor having a value based on the capacitive coupling between two corresponding adjacent loops. An inductive coupling in the spiral resonator is modeled based on inductive coupling between pairs of loops. The operation of the spiral resonator is simulated with the model of the circuit.
Owner:MITSUBISHI ELECTRIC RES LAB INC
System and Method for Analyzing Spiral Resonators
InactiveUS20130144588A1Increase self-inductanceReduce demandMultiple-port networksCAD circuit designCapacitanceCapacitive coupling
A spiral resonator is analyzed by modeling a set of loops of the spiral resonator with a model of a circuit including a set of units, wherein each unit includes a resistor and an inductor to model one loop of the spiral resonator. Values of the resistor and the inductor of each unit are based on properties of a corresponding loop. Electrical connection of the loops is modeled by electrically connecting the units in a corresponding order of the loops. A capacitive coupling in the spiral resonator is modeled by connecting adjacent units with at least one capacitor having a value based on the capacitive coupling between two corresponding adjacent loops. An inductive coupling in the spiral resonator is modeled based on inductive coupling between pairs of loops. The operation of the spiral resonator is simulated with the model of the circuit.
Owner:MITSUBISHI ELECTRIC RES LAB INC
Magneto-thermal isolation type stator structure and motor
ActiveCN111404289AImprove the ability of heat insulation and magnetic insulationIncrease flexibilityWindings insulation shape/form/constructionMagnetic circuit rotating partsThermal isolationElectric machine
The invention discloses a magneto-thermal isolation type stator structure and a motor. The magneto-thermal isolation type stator structure comprises a stator yoke and a plurality of stator teeth. Wherein the stator yoke and the rotor are sleeved with each other; the stator teeth comprise mounting stator teeth and isolation stator teeth; the mounting stator teeth and the isolation stator teeth arealternately arranged on the circumferential wall surface of one side, close to the rotor, of the stator yoke; any stator tooth protrudes towards one side of the rotor. Winding coils are wound on the peripheries of the mounting stator teeth; the isolation stator teeth are provided with a plurality of isolation grooves, the isolation grooves are recessed from the side close to the rotor to the sideaway from the rotor, and the bottoms of the isolation grooves extend into the stator yoke. Winding phase-to-phase thermal field isolation is achieved, and therefore the phase-to-phase thermal isolation effect is achieved when a motor operates in a fault mode. Moreover, the inter-phase mutual inductance of the windings is effectively reduced, and the self-inductance of the windings is increased, sothat the influence of a fault winding short-circuit magnetic field on the normal winding magnetic performance is shielded, and the inter-phase electromagnetic field isolation effect of the windings during motor fault operation is further improved.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Volumetric physiological measuring system and method
InactiveUS8500651B2Reduce system complexityIncrease the number ofPerson identificationElectric/magnetic area measurementsElectromagnetic inductionElectrical and Electronics engineering
A system and method for measuring volumes and areas using electromagnetic induction techniques. A current is generated and fed into one of two coil assemblies to induce voltage into another coil assembly to provide accurate values for volume or area.
Owner:VOLUSENSE AS
Inductance type pressure sensor, manufacturing method and application thereof
InactiveCN110243502AIncrease self-inductancePlay a shielding roleForce measurementEngineeringInductor
The invention discloses an inductance type pressure sensor, a manufacturing method and application thereof. The inductance type pressure sensor comprises a plane inductor, a ferrite film, an elastic support pillar and a flexible cover film, wherein the ferrite film is adhered into the flexible cover film, and is positioned between the plane inductor and the flexible cover film; and the elastic support pillar is supported between the plane inductor and the flexible cover film, so that an air gap exists between the ferrite film and the plane inductor. The inductance type pressure sensor has the characteristics of high sensitivity, short response time, high stability and high repeatability.
Owner:SUZHOU UNIV
Low cross-talk differential microstrip lines having slots therein of subwavelength configuration
ActiveUS9615446B2Increase current densityIncrease self-inductancePrinted circuit detailsWaveguidesPhase differenceLength wave
Owner:WU CHIA HO
Supressing optical loss in nanostructured metals by increasing self-inductance and electron path length
ActiveUS9246031B1Increase self-inductanceReduce lossSemiconductor/solid-state device manufacturingPhotovoltaic energy generationPath lengthLinear configuration
An optoelectronic device configured to operate at an electromagnetic radiation frequency having metal wire electrodes that are optically transparent as a result of the wires having an effective plasma frequency that is equal to or lower than the electromagnetic frequency at which the device operates. The effective plasma frequency of the wire is lowered by configuring the path of the wire between the terminal ends to be meandering, serpentine, U-shaped and in other non-linear configurations.
Owner:STC UNM
Permanent magnet three phase machine for high speed applications having low vibration and low resistive losses
InactiveUS20200028424A1Minimized volumeMagnitude is minimisedSynchronous machines with stationary armatures and rotating magnetsWindings conductor shape/form/constructionMagnetic rotationMagnetic poles
A compact three-phase permanent magnet rotary machine having minimal reluctance torque and electromagnetic torque ripple, and maximum energy efficiency and starting torque per unit volume of winding, comprises an armature having 3(2n+1) ferromagnetic poles and slots, where n is an integer of 1 or more, and a permanent magnet assembly having either 2, 4 or 6 permanent magnet poles. Each of the three phases of the winding comprises multiple coils, each wound about a respective ferromagnetic pole and occupying a pair of slots located immediately on each side of a respective pole. The coils of a particular phase are located within a sector of the circular array of ferromagnetic poles encompassing 2n+1 poles.
Owner:KONINKLJIJKE PHILIPS NV
A high-power and high-reliability six-phase permanent magnet fault-tolerant hub motor for electric armored vehicles
ActiveCN108631459BAdd direct axis inductanceImproving the speed-up capability of magnetic field weakeningMagnetic circuit rotating partsElectric machinesPermanent magnet rotorCarbon fibers
The invention discloses a high-power high-reliability six-phase permanent magnet fault-tolerant hub motor used for an electric armored vehicle. The high-power high-reliability six-phase permanent magnet fault-tolerant hub motor comprises a stator assembly, a rotor assembly, a rotary shaft, a bearing, a machine shell, front back end covers, and a position sensor; the six-phase windings in the stator assembly adopt a fractional-slot and concentrated single-layer winding structure embedded with partition teeth, so that an electrical fault-tolerant structure can be formed between the phase windings; meanwhile, by combination of the dimensional design of the stator toothed groove structure, the phase winding inductance of the electric motor is increased, the short circuit current is suppressedeffectively, and reliability and fault-tolerant performance of the hub motor are improved; the rotor assembly adopts an internal permanent magnet rotor structure, and the outer side of the rotor is wound with a carbon fiber protection sleeve, so that the mechanical structural strength of the rotor is improved; the stator winding adopts a monocrystal copper wire or silver wire, so that stator lossof the hub motor is lowered; the permanent magnet of the rotor assembly adopts eccentric design, and is subjected to circumferential or axial sectioning processing, so that the rotor loss of the hub motor is lowered effectively; a Z-shaped or spiral heat dissipation water path is formed in the machine shell, so that the heat dissipation capability of the hub motor is improved; and the hub motor has high fault isolation, anti-short-circuit and weak magnetic diffusion capability, so that the requirements of high reliability, high power and high rotary speed of the hub driving of the electric armored vehicle can be satisfied.
Owner:北京北航天宇长鹰无人机科技有限公司
Winding reconstruction method for permanent-magnet fault-tolerant rim stepping motor to reduce mutual inductance
ActiveCN108847738AImprove power densityIncrease self-inductanceWindings conductor shape/form/constructionMagnetomotive forceReconstruction method
The invention provides a winding reconstruction method for a permanent-magnet fault-tolerant rim stepping motor to reduce mutual inductance. The winding reconstruction method comprises the steps of S1, defining a motor phase, wherein m is motor phase number, 2km is motor groove number, k is an integer larger than 1, and m is an even number; S2, performing winding reconstruction on the defined motor phase; and S3, ending winding reconstruction. According to the winding reconstruction method for the permanent-magnet fault-tolerant rim stepping motor to reduce mutual inductance, winding reconstruction can be performed on an arbitrary permanent-magnet fault-tolerant rim stepping motor with 2km grooves to reduce the mutual inductance, k is the integer larger than 1, m is the even number, the self-inductance of a winding is improved, the mutual inductance of a 36-groove and 30-pole symmetric six-phase permanent-fault rib stepping motor is reduced, moreover, the beneficial influence of improving the self-inductance of the winding is only caused, and no influence on other motor performance parameters such as on-load counter electromotive force and magnetomotive force harmonic distortion rate is generated.
Owner:DALIAN MARITIME UNIVERSITY +1
Inductor, Device Equipped with Inductor and Method for Manufacturing Inductor
PendingUS20200343036A1Increase self-inductanceHigh densityMultiple-port networksTransformers/inductances coolingInductorEngineering
An example inductor comprises multiple coil parts and each formed by flatwise-winding layers of turns of a flat wire arranged in a radial direction with gaps between each of the layers, and the multiple coil parts are arranged in an axial direction with a clearance. There is provided a clearance between the multiple coil parts, through which air flows, achieving improvement in heat dissipation.
Owner:INST OF NAT COLLEGES OF TECH JAPAN +1
A Planar Inductive Magnetic Sensor
ActiveCN107526046BIncrease self-inductanceThe effect of enhanced inductanceMagnetic field measurement using permanent magnetsMagnetic sensor geometrical arrangementsPlanar inductorElectric control
Owner:SHANGHAI JIAOTONG UNIV
Mixed excitation permanent magnet flux switching motor
InactiveCN101820192BImprove controllabilityInhibit short circuit currentMagnetic circuit rotating partsMagnetic circuit stationary partsConductor CoilElectric field
The invention discloses a mixed excitation permanent magnet flux switching motor which comprises permanent magnets, three-phase armature windings and single-phase excitation windings, wherein the single-phase excitation windings are arranged on a stator, the tooth number of the stator is 4 times number of permanent magnets; and a rotor is in a salient pole structure and has no windings or permanent magnets, thereby having high mechanical strength and being suitable for high-speed operation. An air-gap field comprises an electric excitation magnetic field generated by the excitation windings and a magnetic field generated by the permanent magnets, and is flexibly adjusted by changing an excitation current. An electric excitation magnetic line of force is closed by using an iron core connecting magnetic bridge, which is beneficial to reducing the electric field ampere-turns and lowering the electric excitation copper loss. The armature windings and the excitation windings are distributed in different stator grooves at intervals, which is beneficial to increasing the self-inductance of the armature windings and the mutual inductance of the windings and effectively inhibiting the short circuit current of a motor.
Owner:CHANGZHOU INST OF TECH
A high-power wireless charging magnetic coupling mechanism and its power transmission system
ActiveCN111584220BReduce lossImprove the restraint effectTransformers/inductances coolingTransformersHigh energyEngineering
The invention discloses a high-power wireless charging magnetic coupling mechanism and an electric energy transmission system thereof, belonging to the field of wireless charging. The magnetic coupling mechanism includes a primary mechanism and a secondary mechanism, and the primary mechanism and the secondary mechanism are completely symmetrical. From bottom to top, the primary side mechanism consists of aluminum shell heat dissipation cover, fan, radiator assembly, magnetic core assembly, insulating plate assembly, coil layer, silica gel layer and insulating pressure plate. The power exceeding 100 kilowatts is wirelessly transmitted between the primary side mechanism and the secondary side mechanism. . In the present invention, the wireless charging magnetic coupling mechanism is applied to high energy density transmission scenarios. The primary side mechanism and the secondary side mechanism can still maintain a high level of coupling coefficient at a long distance, which reduces the energy loss in the wireless charging process and has excellent heat dissipation. High performance and magnetic shielding performance, realizing lightweight of high-power wireless charging.
Owner:HUAZHONG UNIV OF SCI & TECH
Electromagnetic clutch
InactiveUS7537098B2Reduce forceReduce the numberYielding couplingMagnetically actuated clutchesElectromagnetic clutchEngineering
Owner:SANDEN CORP
A magnetic-thermal isolation stator structure and motor
ActiveCN111404289BImprove fault toleranceReduce mutual inductanceWindings insulation shape/form/constructionMagnetic circuit rotating partsThermal isolationElectric machine
The invention discloses a magnetothermal isolation stator structure and a motor. The magnetothermal isolation stator structure includes a stator yoke and a plurality of stator teeth. Among them, the stator yoke and the rotor are nested with each other; the stator teeth include installation stator teeth and isolation stator teeth, and the installation stator teeth and isolation stator teeth are alternately arranged on the circumferential wall of the stator yoke close to the rotor side; any stator tooth faces One side of the rotor is protruding; the stator teeth are installed with winding coils around the outer periphery; there are a number of isolation grooves on the isolation stator teeth. The isolation grooves are recessed from the side close to the rotor to the side away from the rotor. The bottom of the isolation groove extends into the stator yoke. Inside. Thermal field isolation between winding phases is achieved, thereby achieving the effect of thermal isolation between phases when the motor fails to operate. In addition, it also effectively reduces the mutual inductance between winding phases and increases the self-inductance of the winding, thereby shielding the impact of the short-circuit magnetic field of the fault winding on the magnetic properties of the normal winding, and further improving the electromagnetic field isolation effect between winding phases when the motor fails to operate.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
A permanent magnet fault-tolerant rim propulsion motor winding reconstruction method with reduced mutual inductance
ActiveCN108847738BImprove power densityIncrease self-inductanceWindings conductor shape/form/constructionElectric machineCounter-electromotive force
The invention provides a winding reconstruction method for a permanent-magnet fault-tolerant rim stepping motor to reduce mutual inductance. The winding reconstruction method comprises the steps of S1, defining a motor phase, wherein m is motor phase number, 2km is motor groove number, k is an integer larger than 1, and m is an even number; S2, performing winding reconstruction on the defined motor phase; and S3, ending winding reconstruction. According to the winding reconstruction method for the permanent-magnet fault-tolerant rim stepping motor to reduce mutual inductance, winding reconstruction can be performed on an arbitrary permanent-magnet fault-tolerant rim stepping motor with 2km grooves to reduce the mutual inductance, k is the integer larger than 1, m is the even number, the self-inductance of a winding is improved, the mutual inductance of a 36-groove and 30-pole symmetric six-phase permanent-fault rib stepping motor is reduced, moreover, the beneficial influence of improving the self-inductance of the winding is only caused, and no influence on other motor performance parameters such as on-load counter electromotive force and magnetomotive force harmonic distortion rate is generated.
Owner:DALIAN MARITIME UNIVERSITY +1
High-power wireless charging magnetic coupling mechanism and electric energy transmission system thereof
ActiveCN111584220AReduce lossImprove the restraint effectTransformers/inductances coolingTransformersHigh energyEngineering
The invention discloses a high-power wireless charging magnetic coupling mechanism and an electric energy transmission system thereof, and belongs to the field of wireless charging. The magnetic coupling mechanism comprises a primary side mechanism and a secondary side mechanism, and the primary side mechanism and the secondary side mechanism are completely symmetrical. The primary side mechanismis sequentially provided with an aluminum housing heat dissipation cover, a draught fan, a heat dissipation device assembly, a magnetic core assembly, an insulating plate assembly, a coil layer, a silica gel layer and an insulating pressing plate from bottom to top, and power exceeding 100 kilowatts is wirelessly transmitted between the primary side mechanism and the secondary side mechanism. Thewireless charging magnetic coupling mechanism is applied to a high-energy-density transmission scene, and the primary side mechanism and the secondary side mechanism can still keep a high coupling coefficient level at a long distance, so that energy loss in the wireless charging process is reduced, meanwhile, the wireless charging magnetic coupling mechanism has excellent heat dissipation performance and magnetic shielding performance, and light weight of high-power wireless charging is achieved.
Owner:HUAZHONG UNIV OF SCI & TECH
Low cross-talk differential microstrip lines for high-frequency signal transmission
ActiveUS20150236394A1Increase current densityIncrease self-inductancePrinted circuitsWaveguidesPhase differenceEngineering
The present invention discloses a pair of differential microstrip lines with low cross-talk for high-frequency signal transmission. The pair of microstrip lines comprises two microstrip lines. The first microstrip line is used to transmit the first transmission signal. The second microstrip line is parallel to the first microstrip line and used to transmit the second transmission signal. The first transmission signal is the complementary signal of the second transmission signal and has a 180° phase difference from the second transmission signal. Particularly, there are a plurality of slots periodically arranged on the outer sides of the first and the second microstrip lines to form a subwavelength configuration. The subwavelength configuration is to make the periodical arrangement length of these slots shorter than the wavelengths of the first and the second transmission signals. These slots can provide subwavelength confinement for enhancing electromagnetic wave.
Owner:WU CHIA HO
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