44results about "Variable inductances/transformers" patented technology

There is provided an assembly for regulating temperature in a system for supplying current to a superconducting load. The assembly may comprise a thermal switch positioned between a cryocooler and a length of superconducting material comprised in a loop of superconducting material in which a voltage is generated by a flux pump. The cryocooler may additionally be thermally connected to the superconducting load. The thermal switch may be configured such that the cryocooler cools the superconducting load to a lower temperature than the length of superconducting material. The temperature to which the length of superconducting material is cooled may be substantially close to a critical temperature of the length of superconducting material. Forms of the technology also relate to the thermal switch and the flux pump.

The invention discloses an ultrasonic power supply impedance network, a variable inductor, a control circuit and a control method. The variable inductor, the ultrasonic power supply impedance network and the control circuit are included. The variable inductor is composed of a main magnetic core, two auxiliary magnetic cores, a main winding and an auxiliary winding, and air gaps are formed between the auxiliary magnetic cores and the main magnetic core. The magnetic saturation degree of the auxiliary magnetic core is changed by adjusting the control current, then the magnetic saturation state of the main magnetic core is changed, and dynamic change of the inductance value is achieved. The ultrasonic power supply load is capacitive, the control circuit can enable the load impedance and the variable inductor to reach a resonance state, the loss is effectively reduced, and the energy transmission efficiency is improved. Besides, according to the impedance matching method, the two auxiliary inductors are utilized, the impedance matching speed is improved through coarse adjustment, the impedance matching precision is improved through fine adjustment, the impedance matching method has the advantages of being high in matching precision, wide in matching range, capable of being dynamically adjusted and the like, and the application field of the variable inductor is further expanded.

Systems and methods for computer-assisted design of an inductor are described. Target specifications for an inductor are received. An inductor design is generated segment-by-segment using a reinforcement learning agent to generate segment parameters for each added segment. The reinforcement learning agent implements a policy that is learned using a reward computed based on performance of the generated inductor design relative to the target specifications. The generated inductor design is outputted as a candidate inductor design after determining that the generated inductor design satisfies a predefined performance threshold.

A variable circuit includes a switch including a plurality of input terminals and a plurality of output terminals and an external wiring line. The multiple input terminals include a first input terminal to which a first input signal is inputted and a second input terminal to which a second input signal is inputted. The multiple output terminals include a first output terminal from which a first output signal is outputted and a second output terminal from which a second output signal is outputted. The switch is capable of forming at least one internal connection path electrically connecting any one of the multiple input terminals and any one of the multiple output terminals. The external wiring line is disposed outside the switch and is configured to electrically connect the second output terminal to the second input terminal.

The utility model discloses a patch type variable inductor, and relates to the technical field of variable inductors. The inductor comprises a base, a magnetic core is fixedly matched with one side of the base, and pins are wound around the periphery of the magnetic core in a matched mode. The winding part is fixedly matched with one side of the base, a T-shaped plate and two T-shaped blocks are elastically and slidably matched with one side of the winding part, an L-shaped plate is fixedly matched with the upper side of the T-shaped plate, and a rotating plate is rotatably matched between one side of the L-shaped plate and one side of each T-shaped block. According to the utility model, through the arrangement of the T-shaped plate, the rotating plate drives one side of the T-shaped plate to slide towards the direction of the base under the action of the T-shaped block, and the pin is positioned on the peripheral side of the winding part through the T-shaped plate, so that the effect of clamping and fixing the pin is achieved, and the problem that the pin falls off from the winding part is reduced.

The technology relates to the field of superconductor transformer-rectifier flux pumps and controlling a supply of alternating current to a transformer-rectifier flux pump to charge a load. A response of the transformer-rectifier flux pump to a characterisation current supply is determined, which may comprise determining values in the flux pump corresponding to values of the applied current. For each of a plurality of target values of load current to be supplied to the load, values of the current supply are calculated. The supply of current to the flux pump is controlled accordingly. The supply may be modified based on feedback received from the flux pump, for example sensors measuring values on the secondary side of the transformer.

Embodiments disclosed herein include an inductor. In an embodiment, the inductor comprises a first core and a second core. In an embodiment, a third core is between the first core and the second core. A first gap is provided between the first core and the third core and a second gap is provided between the second core and the third core. In an embodiment, the third core comprises, a first portion with a first width, a second portion with a second width, and a third portion with a third width between the first portion and the second portion. In an embodiment, the third width is smaller than both of the first width and the second width.

The invention relates to a system (100) for supplying electric power to an electric motor (82) of a hybrid electric vehicle, the power supply system (100) comprising a hydrogen fuel cell unit (26), a hydrogen tank (160) capable of supplying the hydrogen fuel cell unit (26), and a voltage booster (740) at an output of the hydrogen fuel cell unit (26), the voltage booster (740) comprising an induction coil (741), the hydrogen tank (160) is a low-temperature tank capable of maintaining hydrogen in a liquid state and having a temperature lower than the liquefaction temperature of the hydrogen, and the induction coil (741) is immersed in the hydrogen tank (160) and is formed of a material that is a superconductor at the temperature of the liquid hydrogen in the hydrogen tank (160).

The utility model provides a transmission mechanism for accurate in-place of a 150KW transmitter disc type inductor, which comprises a motor fixing box, a motor, a first gear, a second gear, a transmission belt and a swing arm, the motor is arranged in the motor fixing box, the motor fixing box is arranged on a fixing support, the first gear is arranged above the motor fixing box, and the second gear is arranged above the transmission belt. A motor shaft of the motor is in transmission connection with the first gear, the second gear is installed on one side of the first gear and located above the motor fixing box, the first gear and the second gear are connected through a transmission belt, one end of the swing arm is connected with the second gear through a connecting piece, and the other end of the swing arm is connected with the disc type coil. The device is simple in structure and convenient to operate, achieves the purpose of accurate positioning of eight-path transmission, greatly improves the operation efficiency, saves energy, reduces the failure rate, is easier and more convenient to maintain, and solves the problem that the number of eight-path tuning mechanical frames is large, especially the problem that a tuning point cannot be found at high frequency.

The present application provides an adaptive control electromagnetic induction energy harvesting method and system for a transmission conductor. The adaptive control electromagnetic induction energy harvesting method for a transmission conductor comprises: on the basis of an electromagnetic induction energy harvesting apparatus fixed to a transmission conductor, acquiring a first electromagnetic induction electromotive force; if the first electromagnetic induction electromotive force is smaller than a working electromagnetic induction electromotive force, controlling the electromagnetic induction energy harvesting apparatus to adaptively control a magnetic core unit on the basis of the first electromagnetic induction electromotive force to extend or retract in a coil unit, so as to obtain a second electromagnetic induction electromotive force; performing filtering, rectification and voltage conversion processing on the first electromagnetic induction electromotive force or / and the second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage; and on the basis of the electromagnetic induction output voltage, selecting to supply power to or charge an electric device.

The utility model relates to a tunable inductor and an impedance matching circuit, the tunable inductor comprises a first inductor, a second inductor and a control switch network which are mutually coupled, the first end of the first inductor is connected with the first end of the second inductor, the second end of the first inductor is grounded, the second end of the second inductor is grounded, and the impedance matching circuit is connected with the control switch network. The first end of the control switch network is connected with the first end of the second inductor, and the second end of the control switch network is connected with the second end of the second inductor; the control switch network is used for adjusting the inductance value of the second inductor. According to the utility model, the inductance value of the inductor is adjusted through the control switch network with a non-switch structure, so that the influence of switch insertion loss on the inductor is avoided.

The present application relates to the technical field of large current generator, disclose a kind of tap winding configuration method of large current generator.The present application method determines the winding division of the secondary side of three-phase transformer by the output level number threshold of output current, and installs tap on the two sides of the independent winding divided, and then adjusts the connection mode of each tap according to the required output current;The present application realizes the shunt of multiple windings, can reduce the design line diameter of winding to reduce the weight of winding, the configuration of tap enables to adjust the output current of large current generator by adjusting the connection mode of tap, solves the technical problem that the adaptability and flexibility of existing large current generator is poor.

This invention discloses a control method and system for a large-aperture dual-channel resolver transmitter, belonging to the field of power technology. The method includes: determining the required input voltage for the resolver transmitter based on the target speed to be achieved; calculating the required rotation angle of the continuously variable transmission (CVT) knob on the resolver transmitter based on the required input voltage; obtaining the actual rotation angle of the CVT knob; and automatically adjusting the output winding length of the transformer based on the required and actual rotation angles of the CVT knob, so that the resolver transmitter outputs the target speed. The CVT knob is used to change the number of turns of the output enameled wire of the transformer at the voltage input terminal of the resolver transmitter by rotating the knob through an arc length. This invention can provide the current angle value of the CVT knob that needs adjustment in real time and automatically adjust the control when the output speed does not meet the target.

The purpose of the present invention is to provide a thin-film inductor element which, when mounted in a circuit, can exhibit a sufficient emission inductance function while reducing an operation current. A thin-film inductor element is provided with a laminated film in which a magnetic layer and a non-magnetic layer are laminated, and a pair of electrodes, the magnetic layer and the non-magnetic layer extending in an arbitrary shape in a direction orthogonal to the lamination direction, the magnetic layer having substantially the same magnetization structure including components in the lamination direction, and the non-magnetic layer having substantially the same magnetization structure including components in the lamination direction. The non-magnetic material layer is an insulator and has a conductive surface, and the pair of electrodes is provided near both ends of the laminated film extending and at least in positions in contact with the surface of the non-magnetic material layer, and a current modulated at a frequency of 1 kHz to 1 GHz is applied to the pair of electrodes.

The present invention discloses a superconducting transformer coolant liquid nitrogen automatic compensation device, which relates to the technical field of superconducting transformers and includes a cover body. A tank body is arranged below the cover body, and an iron core is installed inside the cover body. A coil is arranged outside the iron core. An upper bracket is fixed at the upper end of the cover body, a lower bracket is fixed below the tank body, and a base is installed below the lower bracket. As the liquid nitrogen in the tank body is consumed, the liquid level of the liquid nitrogen will gradually drop, and the floating plate will drop along with the drop of the liquid level of the liquid nitrogen. The first telescopic rod gradually extends downward until after the floating plate drops to a certain extent along with the liquid level, the connecting rod moves downward with the ball plug. Driven by the connecting rod, the second telescopic rod will rotate until the pressing head presses the control button. At this time, the liquid nitrogen pump will be started, and the liquid nitrogen will be sent into the tank body through the first conveying pipe via the hollow pipe, playing an automatic compensation role for the liquid nitrogen in the tank body, and compensating the liquid nitrogen more timely.

One goal of one embodiment of the present invention is to provide a manufacturing method that produces high-temperature superconducting (HTS) and medium-temperature superconducting (MTS) materials for use in commercial applications. Thus, providing HTS / MTS devices is a related goal of some embodiments of the present invention. For example, the method of one embodiment results in a robust magnet configuration for use in first fully cryogenic (liquid cryogen) HTS linear, rotating, curved, etc. devices. The devices described herein are designed to function at liquid nitrogen (LN2) temperature using existing HTS materials and / or conventional materials that support the lower cryogenic temperatures of SCs.

To provide an electromagnet coil assembly implementing HTS (high temperature superconducting) materials, which can be mass-manufactured in a reliable, robust and highly cost-effective manner.SOLUTION: An electromagnet coil assembly 10 includes core 11, a winding wound in a plurality of turns around the core to constitute a coil 12, and multiple power taps 13a, 13b for electrically connecting the winding to an external power circuit. The winding is formed as a tape component comprising a HTS material. The multiple power taps are connected to the winding exiting the plane of the coil at a predetermined angle. The multiple windings of the coil consist of N turns. A first power tap 13a is connected with the first turn of the winding. A second power tap 13b is connected with a M-th turn of the winding, with M<N.SELECTED DRAWING: Figure 1A

This application provides an electromagnetic induction energy harvesting method and system by adaptive control of a power transmission conductor, the electromagnetic induction energy harvesting method by adaptive control of a power transmission conductor includes: obtaining a first electromagnetic induction electromotive force based on an electromagnetic induction energy harvesting device fixed to the power transmission conductor; if the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, controlling the electromagnetic induction energy harvesting device to adaptively control the intrusion or retraction of the magnetic core unit into or out of the coil unit based on the first electromagnetic induction electromotive force to obtain a second electromagnetic induction electromotive force; performing smoothing, rectification and voltage conversion processing on the first and / or second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage; and selecting whether to perform power supply processing or charging processing for electrical equipment based on the electromagnetic induction output voltage.

The invention belongs to the technical field of superconducting magnet excitation systems, and particularly relates to a high-temperature superconducting flux pump system, which comprises a flux pump body, a superconducting load and a stator group. A double-pancake coil group comprises at least one double-pancake coil. The stator group comprises at least one stator. The flux pump body has an air gap for receiving the stator group. The superconducting load and the stator group are connected to form a closed circuit. The high-temperature superconducting flux pump system has a simpler structure, solves the problem of low charging rate of magnets, and greatly reduces the power cost without changing the magnet structure and winding cost.

There is provided a rectifier of an alternating input current, which may comprise: an electrical switch comprising a length of HTS material to carry an alternating switch current, the HTS material having a critical current; a magnetic field generator to apply a magnetic field to the HTS material; a control mechanism to control the magnetic field generator to switch the switch between a low-resistance state when a magnitude of the magnetic field is relatively low and a higher-resistance state when a magnitude of the magnetic field is relatively high, the relatively high magnitude being sufficient to reduce the critical current so that, for a part of the alternating switch current cycle, the current approaches the critical current, is substantially equal to the critical current or is greater than the critical current. There is further provided an electrical switch having two strands of superconducting material arranged in a bifilar arrangement.

The present invention relates to a superconducting flux pump having volt-level direct-current voltage output and an excitation system. A three-phase alternating-current core and a direct-current bias core are used to form a magnetically coupled air gap to form a traveling wave magnetic field. The traveling wave magnetic field acts on a superconducting stator to generate a direct-current voltage output. The present invention achieves volt-level direct-current voltage output from superconducting flux pumps, reduces the power supply cost of high-temperature superconducting magnets, and enables rapid charging of superconducting coils and operation in a continuous current mode.

The present technology relates to the field of superconducting transformer rectifier flux pumps and the field of controlling the supply of alternating current to the transformer rectifier flux pump to charge a load. A response of the transformer rectifier flux pump to a characterization current source is determined, which may include determining a value of the flux pump corresponding to a value of the applied current. A current supply value is calculated for each of a plurality of target values ​​of load current to be supplied to the load. The current supply to the flux pump is controlled accordingly. The supply may be varied based on feedback received from the flux pump, such as a sensor measuring a value on the secondary side of the transformer.

The present invention relates to a superconducting flux pump having volt-level direct-current voltage output and an excitation system. A three-phase alternating-current core and a direct-current bias core are used to form a magnetically coupled air gap to form a traveling wave magnetic field. The traveling wave magnetic field acts on a superconducting stator to generate a direct-current voltage output. The present invention achieves volt-level direct-current voltage output from superconducting flux pumps, reduces the power supply cost of high-temperature superconducting magnets, and enables rapid charging of superconducting coils and operation in a continuous current mode.

The invention belongs to a transformer structure, and provides a high-frequency and high-voltage transformer and a control method and an electric energy conversion structure thereof in order to solve the technical problems that an existing fully-encapsulated solid-state transformer is high in cost, electrical performance is sharply reduced after operating temperature rises, and partial discharge occurs after long-time operation. The high-voltage side coil assembly is independently filled and sealed, and the pouring sealant is not integrally filled with the magnetic core, so that the probability that the electrical property is sharply reduced due to the fact that the magnetic core is cracked due to the fact that the thermal expansion coefficients of the pouring sealant and the magnetic core are inconsistent is reduced. The magnetic core is annular and is sleeved on the adjoining edges of the two groups of sub high-voltage side coil assemblies, the two groups of insulating frameworks are respectively sleeved on the two opposite edges of the magnetic core, the low-voltage side coil assembly comprises two groups of sub low-voltage side coil assemblies which are connected in parallel, and the two groups of sub low-voltage side coil assemblies are respectively sleeved on the two groups of insulating frameworks. The heat dissipation plate is installed at the bottom of the high-voltage side coil assembly or the magnetic core.

Disclosed is a reciprocating switching mechanism of an on-load tap changer. The reciprocating switching mechanism of the on-load tap changer includes a connection assembly and at least one switching assembly. The at least one switching assembly includes two switching units, the two switching units are arranged on opposite sides of the connection assembly, the two switching units are connected with the connection assembly through a first connection rod and a second connection rod, the first connection rod and the second connection rod are separated by a preset distance, and the first connection rod is slidable relative to the connection assembly. Each of the switching units includes a movable contact assembly and two static contacts, the two static contacts are located at opposite sides of the movable contact assembly, the movable contact assembly is connectable to the static contacts, and the movable contact assembly is slidable relative to the static contacts. One end of each of the two static contacts is connectable with an external support, the movable contact assembly is connected with the connection assembly through the first connection rod and the second connection rod, and the movable contact assembly is rotatable around a central axis of the second connection rod.

Embodiments disclosed herein include electronic packages with embedded inductors and methods of forming such electronic packages. In an embodiment, the electronic package comprises a package core, and a plated through hole (PTH) through a thickness of the package core. In an embodiment, the electronic package further and a magnetic shell around a perimeter of the PTH, where a height of the magnetic shell is less than the thickness of the package core. In an embodiment, the magnetic shell comprises a substantially vertical sidewall and a bottom surface that is tapered.

A downsized variable inductor is disclosed. The downsized variable inductor includes: a magnetic core formed in a closed loop shape, and including an air gap portion formed by partially opening the closed loop shape; a gap core inserted and fixed to the air gap portion to be integral with the magnetic core, and served to increase an inductance and a maximum current at low current of the inductor, and a coil wound and connected to the magnetic core.

An inductance device includes a first inductance, a second inductance, and at least one switching circuit. The second inductance is used to enclose the first inductance and uses the topmost metal layer to shield the first inductance from external interference. The at least one switching circuit is coupled to the second inductance and is used to receive at least one control voltage, wherein the at least one control voltage is used to adjust the on degree of the at least one switching circuit.

This invention discloses an ultrasonic power supply impedance network, a variable inductor, a control circuit, and a control method, including a variable inductor, an ultrasonic power supply impedance network, and a control circuit. The variable inductor consists of a main magnetic core, two auxiliary magnetic cores, a main winding, and auxiliary windings, with an air gap between the auxiliary magnetic cores and the main magnetic core. By adjusting the control current, the magnetic saturation level of the auxiliary magnetic cores is changed, thereby changing the magnetic saturation state of the main magnetic core, achieving dynamic change of the inductance value. The ultrasonic power supply load is capacitive, and the control circuit can make the load impedance and the variable inductor reach a resonant state, effectively reducing losses and improving energy transmission efficiency. Furthermore, the impedance matching method of this invention utilizes two auxiliary inductors, improving the impedance matching speed through coarse adjustment and improving the impedance matching accuracy through fine adjustment. It has advantages such as high matching accuracy, wide matching range, and dynamic adjustment, further expanding the application field of variable inductors.

Integrated circuit (IC) package employing on-package tunable inductor formed in redistribution layer (RDL) for impedance tuner circuit, and related methods. The IC package includes an impedance tuner circuit that includes a tunable inductor that can be tuned to change the frequency response of the impedance tuner circuit. To reduce the circuit area, the tunable inductor is formed in a RDL of a package substrate of the IC package. The IC package also includes a semiconductor die (“die”) that includes other components of the impedance tuner circuit that are coupled to the tunable inductor by the die being coupled to the package substrate. In this manner, by the tunable inductor being formed in a RDL in the package substrate, the signal path lengths between the tunable inductor and other components of the tunable impedance circuit are reduced, thereby reducing inductance path resistance and improving quality (Q) factor of the tunable inductor.