10results about "Variable inductances/transformers" patented technology

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.

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.

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.

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 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 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.

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.

The application discloses a method for optimizing the superconducting transition temperature of a NbN film on a Si substrate at room temperature and application thereof, and comprises the following steps: fixing the Si substrate temperature as room temperature, setting the sputtering power as 100W-300W, setting the deposition gas pressure as 1mTorr-5mTorr, setting the gas mass flow ratio of the reaction gas N2 and the working gas Ar as 15%-35%, setting the sputtering time as 1200s-1500s, and depositing the NbN superconducting film with high superconducting transition temperature on the Si substrate. The superconducting transition temperature of the NbN superconducting film prepared by the method can reach 14.07K, the deposition temperature is room temperature, the preparation method is simple and reliable, has good repeatability, can be produced in industrial batch, and can provide strong material support for the mechanism research of the subsequent NbN superconducting material, the development of a superconducting dynamic inductance detector and engineering application.

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