1789results about "Inductances" patented technology

A charging bench includes three coils that partially overlap, in superposed planes. An electrical feed makes it possible to supply the coils with an AC current from the mains. A portable device to be charged is placed on the upper side of this charging bench. This device includes a winding intended to receive the electrical charging, and a ferrite protective screen. One of the coils (Bb) is selected to emit the magnetic charging flux toward the mobile phone. The selection is carried out via the emission of a series of pulses by at least one of the coils and comparison of return signals with a reference threshold. This comparison also enables one of the other coils (Ba, Bc) to be selected or both of these other two coils (Ba, Bc) to be used to receive a flux for communicating information originating from the portable device to be charged.

The invention discloses a large-current inductor based on thermal actuation multidirectional sealing compensation, and particularly relates to the technical field of inductor parts, the large-current inductor comprises an inductor lower cover, an inductor upper cover, two sliding strips and a multidirectional compensation piece, and the inductor upper cover is arranged above the inductor lower cover; the two sliding strips slide on the inner wall of the inductor lower cover; and one side of each sliding strip is provided with a multidirectional compensation piece. Through the multidirectional compensation piece, the multidirectional compensation mechanism obviously enhances the adaptability of the joint of the inductor upper cover and the inductor lower cover to thermal deformation in different directions, so that the sealing compensation capability of the inductor under multidirectional thermal expansion and cold contraction is more excellent, and the sealing durability of the inductor shell is greatly improved; therefore, the problems that the sealing compensation capacity of the inductor is insufficient under multi-directional thermal expansion and cold contraction, and the sealing durability of the inductor shell is poor are solved.

The utility model relates to current transformer body ring part main insulation wrapping and overturning equipment, an overturning fixing mechanism comprises an overturning seat, first supports are arranged on two sides of one end of the overturning seat, second supports are arranged on two sides of the other end of the overturning seat, first clamping assemblies are arranged on the first supports and the second supports, and second clamping assemblies are arranged on the second supports. The first clamping assemblies are arranged on the two sides of the middle of the turnover base and provided with movable first clamping blocks, the second clamping assemblies are arranged on the two sides of the middle of the turnover base and provided with movable second clamping blocks, the moving direction of the second clamping blocks is perpendicular to the moving direction of the first clamping blocks, the turnover driving mechanism is arranged on the moving base, and the turnover base is arranged on the turnover driving mechanism. According to the device, the ring part of the transformer body can be turned over conveniently and quickly, the production efficiency is improved, and meanwhile, the main insulation binding process is not influenced.

The invention provides a magnetic core mutual inductor with a magnetic core convenient to replace, and relates to the technical field of magnetic core mutual inductors. The magnetic core mutual inductor with the magnetic core convenient to replace comprises a base. Through the matching design of the limiting blocks between the base sinking groove and the connecting seat and the circumferentially distributed limiting grooves, the connecting seat can be positioned along a plurality of preset angles, the magnetic core can be adaptively adjusted along with the angle of a mounting base plane, and the magnetic core can be quickly positioned and locked by adopting a quick locking structure that the upper shell and the lower shell are hinged and matched through a transverse and longitudinal dual positioning and locking mechanism. Opening and closing of the upper shell and the lower shell can be completed through one-hand operation, the disassembly and assembly time for magnetic core replacement or maintenance is greatly shortened, through collaborative design of a graphene heat conduction layer, a phase change heat storage layer and a flexible buffer layer, heat conduction and absorption capacity are enhanced, meanwhile, thermal expansion stress is counteracted through a flexible material, heat dissipation efficiency improvement and structural reliability are both considered, and the application range is wide. And the technical defects of high-temperature accumulation and material deformation easily caused by a single heat dissipation layer design are overcome.

The invention provides a coil module and electronic equipment. Relates to the technical field of circuit boards. A high-speed signal line and a wireless charging coil are integrated in the same coil module. The coil module can comprise a substrate and a metal layer formed on one side of the substrate, the metal layer comprises a thick metal area, a thin metal area and a transition area located in a junction area of the thick metal area and the thin metal area, a wireless charging coil is arranged in the thick metal area, and a high-speed signal line is arranged in the thin metal area. The first nanocrystal and the second nanocrystal are oppositely arranged on the two sides of the substrate, at least part of the periphery of the wireless charging coil is covered with the first nanocrystal, the first nanocrystal extends to the position above the transition area, and at least part of the wireless charging coil is covered with the second nanocrystal. The integration level can be improved, space resources are saved, and the high-speed signal line and the wireless charging coil are pulled away through the transition area without affecting the signal quality of the high-speed signal line and the wireless charging coil.

The invention provides a primary resonance elimination device of a power distribution network voltage transformer and a management and control method, and relates to the technical field of voltage transformer resonance elimination. The primary resonance elimination device comprises a primary resonance elimination resistor, a primary resonance elimination power electronic device, a standby resonance elimination resistor and a standby resonance elimination power electronic device; the primary resonance elimination resistor and the primary resonance elimination power electronic device are connected in series and then are connected in series between a neutral point of the power distribution network voltage transformer and a ground wire; the standby resonance elimination resistor and the standby resonance elimination power electronic device are connected in series, one end of the standby resonance elimination resistor and the standby resonance elimination power electronic device which are connected in series is connected with a neutral point of the power distribution network voltage transformer, and the other end is grounded; the primary resonance elimination device further comprises a current transformer and a temperature sensor; the temperature sensor is used for monitoring the temperature values of the primary resonance elimination resistor and the standby resonance elimination resistor; the current transformer is assembled on a line where the primary resonance elimination resistor and the standby resonance elimination resistor are grounded together and used for monitoring the value of current flowing through the primary resonance elimination device.

The invention discloses an anti-offset wireless charging method, which comprises the following steps of: constructing a transmitting coil array as a charging end, detecting a relative position between a receiving coil of equipment needing wireless charging and the charging end, calculating offset data of the receiving coil, and taking a current state of each sub-coil in the transmitting coil during charging as a decision variable; constructing a dual-objective optimization mathematical model taking the minimum mutual inductance deviation and the maximum system transmission efficiency as optimization objectives, solving the dual-objective optimization mathematical model by adopting a genetic algorithm, searching to obtain a Pareto optimal solution set, selecting the Pareto optimal solution set, and controlling the current state of a transmitting coil in a charging end; through a decision variable control mechanism based on the sub-coil current state, the control granularity is refined from the whole coil unit to the sub-coil level, so that the system can dynamically adjust the current distribution mode in the unit according to the tiny offset of the receiving coil, local fine tuning of the magnetic field intensity is realized, and the precision of the magnetic field intensity is improved. And the coupling requirement under the complex offset working condition can be effectively met.

A power transmitter for wireless power transfer includes a control and communications unit, a vehicular power input regulator, an inverter circuit, at least one coil, a shielding, a housing, and a removable front plate. The housing is configured to house, at least in part, one or more of the control and communications unit, the invertor circuit, the at least one coil, the shielding, or combinations thereof. The removable front plate is configured to mechanically connect to the housing, the removable front plate including at least one magnet, the at least one magnet configured to attract a receiver magnet when a power receiver is proximate to the removable front plate.

A system for inductive energy transmission may include a stationary induction charging device, a mobile induction charging device, and a positioning device configured to detect a relative position of respective charging coils of the charging devices during charging. The positioning device may include a transmitting device and a receiving device that are each arranged in a respective one of the charging devices. The transmitting device may include at least two transmitters that simultaneously emit a respective transmission signal with an associated predetermined frequency. The receiving device may include a receiver configured to output a superimposition of all received transmission signals as a time-dependent received signal. The positioning device may be configured to i) determine an associated amplitude for each transmission signal from the time-dependent received signal and / or ii) provide a position information item from the determined amplitudes. The position information item may represent the relative position of the coils.

A motor vehicle including a mobile induction charging device is disclosed. The motor vehicle is configured to: receive alignment fields generated by stationary induction charging devices of parking spaces of a parking lot and to detect the signal strength and alignment frequency of the alignment fields, recognize based on a stronger alignment field and the alignment frequency of the stronger alignment field that the mobile induction charging device is to be aligned with the stationary induction charging device associated with the parking space as it approaches one of the parking spaces, and output a navigation instruction for aligning the motor vehicle on the parking space via the alignment field associated with the approached parking space.

Positioning systems and methods for charging an electric vehicle are described. A resonator assembly has a position monitoring region and a plurality of resonators distributed within the position monitoring region, each resonator having a resonator location in the position monitoring region, wherein each said resonator is configured to transmit a locator signal having a signal - amplitude and an assigned locator signal characteristic associated with the corresponding resonator location. A reader assembly has a receiver configured to receive the locator signal from at least one resonator of the plurality of resonators, and a processor configured to process a distribution of the received locator signals, to determine a position of the reader assembly relative to the resonator assembly, based on: the signal amplitude of the received locator signals; and the assigned locator signal characteristic of the received locator signals.

The invention discloses a transformer and inductor integrated component, an inverter and electrical equipment, and the transformer and inductor integrated component comprises a magnetic core housing which comprises a first plate body and a second plate body which are oppositely distributed in a first direction, an inner side column, a middle winding column and an outer side column which are distributed at intervals are connected between the first plate body and the second plate body, the middle winding column is arranged around the inner side column, and the outer side column is arranged around the middle winding column; the primary winding is wound outside one of the inner side column and the middle winding column, and the secondary winding is wound outside the other one of the inner side column and the middle winding column. According to the transformer and inductor integrated component, the voltage transformation function and the resonance inductance function can be achieved, the overall size of the transformer and inductor integrated component can be reduced, arrangement of the transformer and inductor integrated component is facilitated, the arrangement cost can be reduced, the efficiency of the voltage transformation function can be improved, and the practicability is high. EMC radiation of a transformer and inductor integrated component can be reduced.

Inductor component (100) in SMD package for low-frequency magnetic fields, comprising a housing (102) with a housing base (104) for mounting on a printed circuit board, three windings arranged within the housing (102), in particular essentially orthogonal to each other, along an X, Y and Z winding axis, a plurality of connection contacts (110) arranged on the housing base (104), and a pin configuration with at least two electrical interconnections (130, 132) permanently manufactured within the housing (102), wherein each of the electrical interconnections (130, 132) electrically connects two specific terminal contacts (110) and the terminal contacts (110) are assigned to the winding ends of the X, Y and Z windings, so that each winding can be electrically connected via the terminal contacts (110).

The invention relates to a system (10) for de-icing the blades (14) of the propeller (12) of an aircraft, the system comprising an H-bridge inverter device (40); a rotary transformer (22) comprising a main primary winding (26), a primary measurement winding (28), and a secondary circuit (30) delivering a secondary alternating voltage (Vs); a rectifier device (50); a de-icing device (20); a control device (60) configured to control the switching elements of the inverter device in an out-of-phase manner, using the value of the voltage (Vpm) across the terminals of the primary measurement winding, measured during a measurement interval of predetermined duration starting at the instant (t11,t33) when the inverter device switches from a controlled state to a short-circuit state.

The objective of the present invention is to achieve downsizing of a power-receiving coil unit including a power-receiving coil.　A power-receiving coil unit (60) comprises: a first power-receiving coil (34a); a ferromagnetic first core member (65) having a first base part (65b) and a core part (65a) that protrudes to one side of the first base part and passes through the first power-receiving coil; a substrate (66) disposed on the other side of the first base part; and a transformer in which a primary-side coil is configured by wiring formed on the substrate. The first core member constitutes a part of the transformer core.

The quantum current transformer based on the optical fiber isolation microwave transmission comprises a high-voltage primary side which comprises a magnetic shielding ring and an NV color center magnetic sensing probe module, and a magnetic sensing probe is arranged in the magnetic shielding ring; at the low-voltage secondary side, the microwave system is used for generating radio-frequency signals in a preset frequency range and transmitting the radio-frequency signals to the NV color center magnetic-sensing probe module, the laser system is used for generating continuous laser and transmitting the continuous laser to the NV color center magnetic-sensing probe module, and the microwave system and the laser system are used in cooperation to drive the NV color center to generate fluorescence signals representing the magnetic field intensity. A fluorescence signal is transmitted to the data processing system to calculate to-be-detected current information; wherein the microwave system is connected with the NV color center magnetic sensing probe module through an optical fiber, the microwave system modulates the radio frequency signal into an optical signal, transmits the optical signal to the NV color center magnetic sensing probe module, and restores the optical signal into the radio frequency signal in the NV color center magnetic sensing probe module to be received. According to the transformer, stable transmission of microwave signals under the high-low voltage isolation condition is achieved, the design is reasonable and exquisite, and the measurement precision is high.

An ignition coil assembly with internal diagnostic features that can be used to monitor and evaluate different aspects of an ignition system and provide continuous feedback. The ignition coil assembly may be a coil-on-plug type device that converts low-voltage battery power into high-voltage ignition pulses, and may include several input terminals, an ignition coil with primary and secondary windings, ignition circuitry, an output terminal, a spark plug connector, and a housing. The ignition circuitry includes an ignition operational circuit and an ignition diagnostic circuit, which in turn has a charging evaluation circuit for monitoring a charging phase, a discharging evaluation circuit for monitoring a discharging phase, and a feedback integration circuit for combining outputs into a multiplexed digital signal that can then be sent to an engine control unit (ECU) or the like over a single output terminal.

An electric machine for a motor vehicle is disclosed, and may include a stator, a rotor rotatably mounted with respect to the stator and having rotor windings for generating a rotor magnetic field, and an active rectifier provided on the rotor. The active rectifier may electrically connect a voltage source present on the rotor to the rotor windings, and may be configured to convert an alternating voltage provided by the voltage source into a direct voltage. The direct voltage may be configured to be utilized during generation of the rotor magnetic field by the rotor windings. The active rectifier may be arranged on or in a cooling section of the rotor. The cooling section may form a heat sink through which a cooling fluid can flow.

Discussed is a wireless charging device which can change the direction of a magnetic field, generated in a transmission coil, through a vertically and horizontally rotatable repeater, and can hold a user terminal in parallel with the repeater, thereby transmitting wireless power in various directions and at various angles. The wireless charging device includes a case, a flat plate core disposed in the case, multiple transmission coils arranged parallel to each other on the flat plate core, a terminal holder including a repeater therein and disposed on the top surface of the case while sloping with respect to the top surface of the case, and a moving member for moving the terminal holder in the direction in which the plurality of transmission coils are arranged.

An ignition coil of a non-equal-thickness iron core structure comprises a shell, a low-voltage head is arranged on the upper portion of the shell, a high-voltage sheath assembly is installed on the lower portion of the shell, a coil assembly is transversely arranged in the shell and filled with epoxy resin, the low-voltage head is located at one end of the coil assembly, and an ignition module is arranged in the shell and close to the low-voltage head. The coil assembly comprises a T-shaped iron core, a primary framework arranged outside the T-shaped iron core in a sleeving mode, a secondary framework arranged outside the primary framework in a sleeving mode, a first C-shaped iron core and a second C-shaped iron core, the first C-shaped iron core and the second C-shaped iron core are arranged outside the secondary framework in a surrounding mode, and the first C-shaped iron core and the second C-shaped iron core are oppositely combined together to form an O shape and are connected to the end of the T-shaped iron core. The thickness of the first C-shaped iron core and the thickness of the second C-shaped iron core are larger than that of the T-shaped iron core. As the C-shaped iron core assembly and the T-shaped iron core are of a non-equal-thickness structure, the T-shaped iron core is thin, so that the space of primary and secondary framework structures on the periphery of the iron core is saved, and the requirement for the electrical performance function of the coil is met.

The invention provides a non-effective grounding voltage transformer and a voltage mutual inductance state monitoring method, the non-effective grounding voltage transformer comprises a main voltage transformer and a zero sequence voltage transformer, the main voltage transformer comprises a primary high voltage winding, a secondary low voltage winding and a secondary protection winding, the zero-sequence voltage transformer comprises a zero-sequence primary winding, a zero-sequence secondary winding and a zero-sequence protection winding; a neutral point of the primary high-voltage winding is electrically connected with one end of the zero-sequence primary winding, a neutral point of the secondary low-voltage winding is electrically connected with one end of the zero-sequence secondary winding, and the other ends of the zero-sequence secondary winding and the zero-sequence primary winding are grounded; one end of the secondary protection winding and one end of the zero-sequence protection winding are grounded, the other end of the zero-sequence protection winding is grounded, and the other end of the secondary protection winding is grounded through the current-sensitive resonance elimination resistor; when a power distribution system is disturbed and attempts to cause resonance, the iron core of the zero sequence voltage transformer is rapidly saturated, which is equivalent to that a resistor is connected in series in a loop, so that a large amount of resonance energy is consumed and a resonance elimination effect is achieved.

Charging devices according to embodiments of the present technology may include a housing including an input configured to receive power from a power source and provide power to internal components of the charging device. The charging devices may include a ferrite. The ferrite may be coupled with electrical ground. The charging devices may also include a conductive coil seated in the ferrite. The conductive coil may be configured to generate an electromagnetic field from an AC signal.

Disclosed are a non-contact rotary transformer and a motor comprising same. A non-contact rotary transformer according to the present invention is a device for connecting a rotor of a motor with an external power source in a non-contact manner, and is characterized by comprising: a core part disposed inside a hollow motor shaft in a coaxial structure with the motor shaft; a primary coil part installed on the outer circumferential surface of the core part; a secondary coil part which is installed on an inner main surface of the motor shaft and surrounds the primary coil part at a predetermined interval (air gap) therefrom; and a rectifier circuit part which is coupled to the motor shaft and rotates in synchronization therewith, and which is electrically connected to the secondary coil part.

The invention discloses an omnidirectional wireless electric energy transmission device, and belongs to the technical field of wireless electric energy transmission. The device comprises a regular octahedron framework and a transmitting coil which is continuously and unidirectionally wound along the edge of the regular octahedron framework, and the winding directions of adjacent triangular frameworks are opposite so as to generate an enhanced magnetic field which is matched with a first resonance compensation network and a high-frequency power supply system to work. A receiving end adopts three groups of coil units which are orthogonally arranged in the same plane and are mutually isolated to form a receiving coil, and each group is connected with an independent second resonance compensation network to form a resonance rectification branch. According to the structure, an omnidirectional uniform magnetic field is generated through unique regular octahedron coil arrangement, so that receiving equipment can be efficiently charged at any angle and position in a large range, and the structure has high tolerance to rotation and offset. The planar orthogonal receiving coil can capture more magnetic flux in a three-dimensional space, the transmission efficiency is improved, cross coupling is effectively restrained, and meanwhile the planar orthogonal receiving coil can be conveniently integrated in a mobile phone, a computer and other devices through the flat design.

The utility model relates to a miniature current transformer, which comprises a shell and a coil arranged in the shell, the coil comprises an iron core and a secondary winding wound on the surface of the nanocrystalline iron core, and the iron core is manufactured by performing heat treatment on nanocrystalline materials in a magnetic field; the shell is provided with a center channel which is arranged in a penetrating mode, a primary side wire can penetrate through the center channel, and the number of penetrating turns of the primary side wire is one. The miniature current transformer can realize output current at the secondary side when muA-level small current is input, fills the blank of a traditional transformer in the field of low-current measurement, improves the monitoring capability of a power system on a small current signal, is helpful for more accurately mastering the change condition of weak current in the power system, and improves the measurement accuracy. Accurate data support can be provided for electric leakage monitoring of some precise electronic equipment, current detection of a low-power-consumption circuit and the like, so that the safety and the reliability of a power system are improved.

Disclosed herein are a method of controlling a bipolar high-voltage generator and an X-ray system. The bipolar high-voltage generator is connected to a load for supplying a cathode voltage and an anode voltage to the load. The bipolar high-voltage generator includes a first transformer and a second transformer. The first transformer is provided in an output circuit of the anode voltage, and the second transformer is provided in an output circuit of the cathode voltage. The method of controlling includes: obtaining a target voltage difference of the bipolar high-voltage generator, wherein the target voltage difference is within a preset range; and adjusting a working state of at least one of the first transformer and the second transformer based on the target voltage difference. The target voltage difference is defined as a difference between an absolute value of a target anode voltage and an absolute value of a target cathode voltage output from the bipolar high-voltage generator.

The present application relates to the technical field of anti-DC current transformer, and discloses an anti-DC current transformer and method based on temperature compensation, which comprises a shell, an iron core is installed on the inner side of the shell, and a transformer coil is wound on the outer side of the iron core, and further comprises a negative temperature resistance compensation system connected in series with the transformer coil, the negative temperature resistance compensation system comprises a NTC negative temperature thermistor R1 and a parallel resistance system composed of a common resistance R3 and a common resistance R2 connected in parallel, and a parallel loop connected in series with the transformer coil, and the equivalent resistance value of the negative temperature resistance compensation system decreases with the increase of ambient temperature.The present application solves the problem of large phase difference / bias difference variation of traditional single-iron-core anti-DC transformer caused by changes in working environment temperature, reduces the phase difference variation caused by temperature from about 15% of the traditional value to 1-2%, and reduces the bias difference variation to within 0.1%, greatly reducing the temperature drift error and improving the transformer precision.

The utility model provides a combined electricity-taking measuring mutual inductor which comprises a fixing seat, a fixing groove is formed in the top of the fixing seat, an electrode column is installed on the side of the fixing groove, the electrode column is fixed to the fixing seat, a wire holder is fixed to the side of the fixing seat, an inserting hole is formed in the wire holder, and the inserting hole is communicated with the electrode column. A mounting groove is formed in the side of the fixed seat, a movable plate is movably mounted in the mounting groove, a fixed shaft is fixed on the movable plate, a movable seat is movably mounted on the side of the fixed seat, and one side of the movable seat is fixedly mounted on the fixed shaft. According to the combined electricity-taking measurement mutual inductor, when the combined electricity-taking measurement mutual inductor is used, the movable base rotates and then moves downwards, the extrusion plate on the movable base makes contact with the top of a cable, the extrusion plate extrudes and limits the cable along with descending of the movable base, and the influence caused by displacement of the cable in the fixing groove is avoided.

The invention relates to a machine tool having a machine body and a tool, wherein an ultrasonic transducer comprising a stacked arrangement of piezoelectric actuators is arranged on a tool side of the machine tool; the machine tool comprises a drive transformer for supplying the ultrasonic transducer with an energy signal, said drive transformer comprising a primary drive coil, which is arranged on the machine body side and is connected to an alternating signal supply device, and a secondary drive coil, which is arranged on the tool side, is separated from the primary drive coil by a first air gap and is connected to the ultrasonic transducer; the machine tool comprises a measuring device comprising at least one piezoelectric sensor arranged on or in a tool holder of the machine tool; wherein the measuring device is connected to a signal transmission device for contactless transmission of a measurement signal from the measuring device to a signal detection device on the machine body side, said signal transmission device comprising signal transmission elements having a second air gap located therebetween and spaced apart from the first air gap. According to the invention, the signal detection device is a voltage measuring device, wherein the at least one piezoelectric sensor is integrated in a measuring circuit comprising the signal transmission device and at least one measuring capacitor connected in parallel with the at least one piezoelectric sensor on the tool side and / or in parallel with the voltage measuring device on the machine body side.

The present application relates to the technical field of mutual inductor, specifically to a 10-35kV combined mutual inductor for measuring current and voltage, which comprises a mutual inductor body and a wiring slot arranged at one end of the mutual inductor body, a wire hole is communicated with the bottom of the wiring slot, a bottom plate and a binding belt are arranged inside the wiring slot, an installation shell is fixedly installed at one end of the top of the bottom plate, an installation shaft one is fixedly installed at one end inside the installation shell, an installation shaft two is fixedly installed inside the sleeve, a locking mechanism is arranged inside the installation shell, a top cover is arranged at the top of the installation shell, a clamping mechanism is arranged inside the top cover, and a rotating mechanism is arranged at one end of the top cover close to the installation shaft two. The present application has the beneficial effect of replacing the mode of binding multiple wires by adhesive tape in the prior art, the binding belt will not be aged and deteriorated due to temperature and humidity, and the effect of binding multiple wires is ensured.