10 results about "Ampere" patented technology

The invention relates to the technical field of power electronic component manufacturing and advanced composite material application, in particular to a 3D inductor based on the Ampere's law and a method thereof. The three-dimensional precise interlocking winding comprises a functional composite framework, a three-dimensional precise interlocking winding and a magnetic core assembly, according to the system, a framework is formed by compositing a heat-conducting insulating substrate and soft magnetic powder, and air gaps between winding layers are physically filled through step-shaped positioning ribs; the core is that a low-thermal-resistance export path is established by utilizing the high heat conduction characteristic of the framework, and a heat conduction mode is converted from coil-to-air to coil-to-framework; the gradient difference between the core temperature and the surface temperature in the coil is effectively reduced through the embedded heat dissipation array, the heat dissipation problem under the high power density is solved, and the device performance is remarkably improved.

This invention discloses a method and system for preventing electrode breakage in refining furnaces using quantitative bottom blowing of hot slag with low current, belonging to the field of metallurgical technology. The method includes: pouring circulating hot slag at a temperature not lower than 1450℃ into the ladle to soften the crusted slag layer; quantitatively adjusting the bottom blowing argon flow rate, extracting the argon pore opening diameter using a visual sensor and establishing a calculation model to maintain liquid level stability; switching the electrode raising and lowering to manual mode, setting a low arc-starting current of 10000 amperes, and using a laser reference to control the three-phase electrode flatness error within ±5mm; acquiring electrical and acoustic signals at a period of not less than 100 milliseconds to construct a multi-dimensional model to determine successful arc ignition; after stabilization, increasing the power at a preset slope and switching back to automatic mode. Through hot slag modification, quantitative bottom blowing, low-current arc ignition, and multi-dimensional monitoring, the risk of electrode breakage in the early stages of arc ignition is significantly reduced, improving the safety and stability of the refining process.

This application provides a modeling method and system for predicting the core loss of a high-frequency transformer, comprising: measuring the magnetic properties of the core material at different frequencies based on an experimental platform, and obtaining the magnetization curve and loss density curve of the core material according to Ampere's circuital law; inputting the magnetization curve into a constructed geometric model, setting excitation and boundary conditions, establishing a finite element model and performing finite element simulation analysis to obtain the loss density distribution and magnetic flux density distribution within the high-frequency transformer core; and constructing a loss model by introducing a gradient coefficient and the average value of the loss density, the magnitude of the magnetic field strength gradient, and the average value of the magnitude of the magnetic field strength gradient obtained from the finite element model, to predict the core loss. This application provides important basis for material selection, geometric structure optimization, and thermal design of high-frequency transformers, helping to shorten the R&D cycle, reduce trial production costs, and improve the overall performance of high-frequency transformers.

The invention discloses a permanent magnet wind driven generator inductance parameter identification method based on a JA model and data fusion, and the method comprises the following steps: decomposing the magnetization intensity of a ferromagnetic material into a reversible component and an irreversible component, deducing the nonlinear relation between inductance and current through combining the Ampere loop law, introducing a cross saturation coefficient to correct the inter-axis coupling effect, and identifying the inductance parameter of the permanent magnet wind driven generator. Establishing an inductance basic model in a magnetic saturation state; integrating the influences of current, temperature and frequency to form a composite inductance model; establishing a state equation based on the voltage equation and the flux linkage equation; dynamic prediction and updating of states and parameters are realized through extended Kalman filtering, parameter correction is driven by using flux linkage errors in combination with a model reference adaptive system, and finally, weights are adjusted based on disturbance errors of rotational inertia and friction coefficients, so that fusion identification is realized. According to the invention, through physical mechanism modeling and multi-field coupling correction, high-precision tracking of inductance parameters under a wide working condition is realized, and the identification precision and generalization ability of a magnetic saturation region are significantly improved.

The present application provides a kind of available ampere-hour management method and system of group vehicle.First, a first available ampere-hour and a second available ampere-hour corresponding to a first electric vehicle and a second electric vehicle in a group are provided in a remote server.During a certain billing period, the first used ampere-hour of the corresponding first electric vehicle and the second used ampere-hour of the corresponding second electric vehicle are continuously received by a network.Then, it is judged whether the first used ampere-hour exceeds the first available ampere-hour, and whether the second used ampere-hour exceeds the second available ampere-hour.When the first used ampere-hour exceeds the first available ampere-hour and the second used ampere-hour does not exceed the second available ampere-hour, the second available ampere-hour is deducted by the part of the first used ampere-hour exceeding the first available ampere-hour.

The application discloses a permanent magnet wind generator inductance parameter identification method based on JA model and data fusion, comprising the following steps: decomposing the magnetization intensity of ferromagnetic material into reversible component and irreversible component, deducing the nonlinear relationship between inductance and current in combination with Ampere loop law, introducing cross saturation coefficient to correct the inter-axis coupling effect, and establishing an inductance basic model under magnetic saturation state; integrating the influences of current, temperature and frequency to form a composite inductance model; establishing a state equation based on a voltage equation and a flux linkage equation; realizing dynamic prediction and update of state and parameters through extended Kalman filtering, combining a model reference adaptive system to drive parameter correction by using flux linkage error, and finally adjusting weights based on disturbance error of rotational inertia and friction coefficient to realize fusion identification. Through physical mechanism modeling and multi-field coupling correction, the application realizes high-precision tracking of inductance parameters under wide working conditions, and significantly improves the identification precision and generalization ability in the magnetic saturation region.

This utility model relates to the field of rotary joint technology, specifically to a high-sealing rotary joint, comprising: a fixed shell, a rotating shaft tube rotatably connected to the inner wall of the fixed shell, an airtight groove formed on the inner wall of the fixed shell, and a sealing gasket fixedly connected to the outer wall of the rotating shaft tube. The sealing gasket is made of a modified material with added permanent magnet powder. This utility model includes a detection component inside the sealing gasket. When the diameter of the sealing gasket decreases due to wear, the circumference of the strain gauge increases under the elastic action of the sealing gasket. The resistance of the strain gauge changes with stretching. According to the principle of strain effect, when the strain gauge is stretched, its length increases and its cross-sectional area decreases. According to the law of resistance, the resistance of the strain gauge increases, and the current through the strain gauge decreases. After the PLC controller detects the current change, it increases the current flowing into the electromagnetic coil. The magnetic field strength generated by the electromagnetic coil is proportional to the current flowing into the coil, according to Ampere's law.

The utility model discloses an ampoule bottle bottom sealing machine, which relates to the technical field of ampoule bottle heat sealing and comprises a heat sealing machine main body. A rotating disc is arranged at the bottom of the inner surface of the heat sealing machine body, a water tank is installed on the upper surface of the rotating disc, sliding guide rails are arranged on the two sides of the inner surface of the water tank, a containing disc is slidably installed on the outer surfaces of the sliding guide rails, a containing block is arranged on the upper surface of the inner wall of the water tank, and a waterproof motor is installed on the surface of the containing block. Compared with an existing common ampoule bottle heat sealing machine, according to the ampoule bottle bottom sealing machine, through the arrangement of the threaded rod, the threaded rod can drive the containing disc to conduct spiral transmission according to the length of an ampoule bottle, the height of the containing disc is adjusted, the containing disc can be placed in the containing disc, the containing disc can be placed in the containing disc, and the sealing effect is good. Ampere bottles with different heights can be used, the placing stability of the ampere bottles is ensured, and the ampere bottles can be normally sealed by using a heat sealing machine.

This invention discloses a wide-range current measurement dynamic compensation method and system for excitation system testing, belonging to the technical field of excitation system technology. This invention acquires the temperature of key chips in the signal conditioning module in real time, dynamically calculates zero-point offset and actual gain based on factory calibration parameters, performs digital filtering and noise reduction on the acquired voltage signal, and uses a single-iteration approximation method to complete initial current estimation and nonlinear correction, achieving full-range dynamic error compensation. The system includes a signal conditioning and acquisition module, a temperature acquisition module, a dynamic compensation processor, and an output module. This invention overcomes the shortcomings of traditional testing devices such as manual range switching, static calibration lag, and low accuracy at low currents. It can achieve continuous high-precision measurement over a wide range from milliamperes to tens of amperes, effectively suppressing temperature drift, noise, and nonlinear errors, significantly improving testing efficiency and stability, and is suitable for on-site maintenance and commissioning of hydropower station excitation systems.

This invention relates to the field of power electronic component manufacturing and advanced composite material application technology, specifically a 3D inductor based on Ampere's law and its method; it includes a functional composite skeleton, a 3D precision interlocking winding, and a magnetic core assembly; the system uses a thermally conductive insulating matrix and soft magnetic powder composite molded skeleton, and physically fills the air gap between winding layers through stepped positioning ribs; its core is to utilize the high thermal conductivity of the skeleton to establish a low thermal resistance heat dissipation path, changing the heat conduction mode from coil to air to coil directly to the skeleton; this invention effectively reduces the temperature gradient difference between the core temperature and the surface temperature inside the coil through an embedded heat dissipation array, solving the heat dissipation problem under high power density and significantly improving device performance.