72results about How to "Uniform voltage distribution" patented technology

An embodiment of the invention discloses a serial-connection power supply chip, a serial-connection power supply system, a virtual digital currency mining machine and a server. The serial-connection power supply chip comprises n serial-connection to-be-powered units which are powered in a serial connection manner, a voltage domain is formed in every to-be-powered unit, and voltage of a power source of the serial-connection power supply chip forms n-stage serial-connection voltage domains, wherein n is an integer more than 1; a signal level conversion unit is serially connected between every two adjacent to-be-powered units and used for communication signal level conversion between every two adjacent to-be-powered units. The serial-connection power supply chip has the advantages that the work performance of the to-be-powered units and the whole work performance of the chip are improved, and the whole production cost is reduced.

The invention discloses a display panel, a manufacturing method of the display panel and a display device. The display panel comprises an underlayer substrate, a plurality of first electrodes, a pixeldefining layer, a connecting metal layer, an organic light-emitting function layer and a second electrode, wherein the pixel defining layer and the first electrodes are located on the same side of the underlayer substrate, and the pixel defining layer comprises a plurality of openings for exposing the first electrodes respectively; the connecting metal layer is located on the side, which deviatesfrom the underlayer substrate, of the pixel defining layer, and the orthographic projection of a pattern of the connecting metal layer on the underlayer substrate at least half surrounds the openings; the second electrode is located on the sides, which deviate from the underlayer substrate, of the organic light-emitting function layer and the pixel defining layer, and the orthographic projectionof the second electrode on the underlayer substrate covers the orthographic projection of the pixel defining layer and the orthographic projection of the first electrodes on the underlayer substrate;and the second electrode is electrically connected with the connecting metal layer. Due to the fact that the connecting metal layer is connected with the second electrode in parallel, the in-plane resistance of the second electrode is reduced, the voltage drop in the display area is reduced, the voltage distribution in the display area is more uniform, and the display uniformity of the display panel is improved.

The invention relates to a method for establishing an active power distribution network planning model considering site selection and constant volume of an electric vehicle charging station. The method comprises: converting the traffic flow of the electric vehicle into a mobile charging demand in a traffic network on the basis of the site selection and constant volume of an electric vehicle charging station, and establishing an electric vehicle traffic network model based on an M/M/s queuing model and a closure site selection model in the traffic field; establishing a distributed power supply(including wind power and photovoltaic) and load model by adopting a time sequence method, and simulating the output or requirements of the distributed power supply and the load in different time sequence scenes; establishing an energy storage element model in the power distribution network based on an equivalent load thought; establishing an embedded layer planning model by taking the economy andreliability of a power distribution network and the maximum traffic flow intercepted by an electric vehicle charging station as targets. On the premise of optimizing system operation as much as possible in an inner layer, the construction cost input of an active power distribution network is fully improved in an outer layer, the overall economy of power distribution network planning is improved,and the voltage distribution of the power distribution network is improved.

The invention discloses a liquid crystal display panel and a manufacturing method thereof. The liquid crystal display panel comprises data lines, scanning lines and a semiconductor layer, wherein the data lines and the scanning lines are vertically and horizontally crossed on a substrate and used for crossly limiting pixel electrodes and thin film transistors in a pixel region; transparent public electrodes forming storage capacitors with the pixel electrodes are also arranged in the pixel region; each thin film transistor comprises a grid electrode, a source electrode and a drain electrode; the semiconductor layer is formed along with the transparent public electrodes; and the semiconductor layer and the transparent public electrodes are all positioned on the substrate. According to the liquid crystal display panel, few limitations are in the manufacturing process, so that the transparent public electrodes between adjacent pixels can be directly connected, the impedance of the transparent public electrodes is reduced, and the voltage distribution of the public electrodes is more uniform; and the manufacturing method is a mask-saving manufacturing process, so that the number of light masks in the manufacturing method of the liquid crystal panel with the transparent storage capacitors can be reduced to be 4 or 5, the production capacity can be increased, and the cost can be saved.

The invention relates to a Gauss quadrature algorithm-based optical voltage transformer. The Gauss quadrature algorithm-based optical voltage transformer includes a grading ring, a high-voltage side electrode, a low-voltage grounding side electrode, a shielding tube, a base, a transmission unit, a high-voltage binding post, a hollow insulator, electric field sensors, an SLD light source and a signal acquisition and processing unit. The grading ring is located at the exterior of the top of the hollow insulator; the high-voltage binding post is located at the topmost end of the hollow insulator and is connected with the high-voltage side electrode; the high-voltage side electrode and the low-voltage grounding side electrode are arranged in the hollow insulator; the high-voltage side electrode and the low-voltage grounding side electrode are respectively located at the top and the bottom of the hollow insulator; the electric field sensors are connected with the SLD light source and the signal acquisition and processing unit through the transmission unit; and polarized light with phase difference transmitted from the electric field sensors is transferred to the signal acquisition and processing unit for performing signal acquisition and data processing. According to the Gauss quadrature algorithm-based optical voltage transformer of the invention, the five electric field sensors are adopted; Gauss-Legendre quadrature is performed on electric field values measured by the five electric field sensors, so that a high-voltage side voltage value can be calculated out; and therefore, influence of temperature and external magnetic fields on the optical voltage transformer can be decreased, and measurement accuracy and operation stability of the optical voltage transformer can be improved.

The invention provides a radio frequency switch circuit comprising a transistor chain composed of M connected transistors, wherein the radio frequency switch circuit further comprises a resistor chain composed of M first resistors connected in series, M connecting points are arranged on the resistor chain, and substrates of the M transistors are sequentially connected to the M connecting points through different second resistors. The invention further provides another radio frequency switch circuit comprising a first resistor chain composed of M first resistors connected in series and a second resistor chain composed of M-N first resistors connected in series, wherein N connecting points are arranged on the first resistor chain, M-N connecting points are arranged on the second resistor chain, the substrates of previous N transistors in the transistor chain are sequentially connected to the N connecting points through a different second resistor, and the substrates of latter M-N transistors are sequentially connected to the M-N connecting points through a different second resistor. The two radio frequency switch circuits can reduce the maximum voltage difference between the source electrodes and the drain electrodes of the transistors, so that the voltage distribution on the transistors is more uniform.

The invention provides a plasma processing apparatus, wherein a substrate is subject to plasma treatment uniformly.The plasma processing apparatus comprises a chamber (2), a substrate placing table (3) arranged inside the chamber for placing substrates (G), an upper electrode (15) arranged with respect to the substrate placing table (3), a spray head (5) for introducing the gas to be treated into the chamber (2) and a gas exhaust device (28) for the exhaust of the chamber (2), wherein high frequency power is applied on the upper electrode (15).The upper electrode (15) consists of two electrode parts (16, 17).When high frequency power is applied on the electrode parts (16, 17), standing waves are formed on each of the electrode parts.The configuration of the electrode parts (16, 17) or the distribution of the standing waves formed on the electrode parts is adjusted by the sum of the plurality of standing waves, wherein the voltage distribution in the electrode plane becomes uniform.

The invention discloses a stator assembly and a motor with the stator assembly. The stator assembly comprises a stator core and a stator winding; the stator core is provided with a plurality of statorgrooves; the stator winding comprises an A-phase winding; the A-phase winding comprises a plurality of first sub-winding sections, a second sub-winding section, a plurality of third sub-winding sections, a fourth sub-winding section, a bridging line, a fifth sub-winding section, a plurality of sixth sub-winding sections, a seventh sub-winding section and a plurality of eighth sub-winding sectionswhich are sequentially connected; the initial end of the A-phase winding is connected with an A-phase outgoing line; the termination end of the eighth sub-winding section is connected with an A-phasestar point line. A corresponding welding end of the second sub-winding section and the seventh sub-winding section of the A-phase winding is designed to span (y-1) stator grooves, and bridging line shape is improved, so that the distance at the welding end can be reduced, and the distance between the A-phase star point line and an A-phase outgoing line can be reduced for the whole winding processof the A phase, and welding connection is easy to realize.

The invention provides a shielded voltage-sharing circuit. The circuit includes a main circuit and an auxiliary circuit parallel to the main circuit; the main circuit includes a thyristor level equivalent circuit and a metal terminal to ground capacitance and saturation reactor equivalent circuits; and the auxiliary circuit includes M pi-type circuits which are in successive series. According to the technical schemes, shielding potential fixed point can be isolated from electric of the main circuit, the first end and the tail end of a converter valve and a shielding case are only in electricalconnection, and therefore, discharging effects in the converter valve on ground stray capacitance can be shielded, and voltage equalization distribution of wide frequency domain scaled series thyristors can be realized; and under the impact of steep waves, the unevenness of thyristor voltage is less than 1%, the largest voltage steepness can be reduced to 6.8 kV/[mu]s, no distortion of voltage ofkey components of the converter valve under wide frequency domain can be realized, the reliability and insulation tolerance of components can be enhanced, and the circuit has high engineering application values.

The invention discloses a stator assembly and a motor with the stator assembly. The stator assembly comprises a stator core and a stator winding; the stator core is provided with a plurality of statorgrooves; the stator winding comprises an A-phase winding; the A-phase winding comprises a plurality of first sub-winding sections, a second sub-winding section, a plurality of third sub-winding sections, a fourth sub-winding section, a bridging line, a fifth sub-winding section, a plurality of sixth sub-winding sections, a seventh sub-winding section and a plurality of eighth sub-winding sectionswhich are sequentially connected; the initial end of the A-phase winding is connected with an A-phase outgoing line; the termination end of the eighth sub-winding section is connected with an A-phasestar point line; a corresponding welding end of the second sub-winding section and the seventh sub-winding section of the A-phase winding is designed to span (y-1) stator grooves, and bridging line shaped is improved, so that the distance at the welding end can be reduced, and the distance between the A-phase star point line and the A-phase outgoing line can be reduced for the whole winding process of the A phase, and welding connection is easy to realize.

The invention provides a lightning arrester detection system based on multiple signal acquisition. The lightning arrester detection system comprises a leakage current acquisition unit, a temperature acquisition unit, a current/voltage conversion unit, an A/D conversion unit, a control processing unit, a storage unit, an alarm unit and a communication unit. The lightning arrester detection system respectively collects a leakage current signal and a temperature signal of the lightning arrester, compares and analyzes the leakage current signal and the temperature signal with a preset alarm value, judges whether the lightning arrester is abnormal or not, and controls the alarm unit to send an alarm signal in time when the lightning arrester is abnormal. And the detection information is uploaded to a monitoring center in real time through the communication unit. The invention provides a lightning arrester detection system and method based on various signal acquisition, which can effectively detect whether the distribution of lightning arresters is uniform and whether the temperature is abnormal, and ensure the service life of the lightning arresters.

The invention relates to a primary coil of a CVT intermediate transformer and a manufacturing method of the primary coil. The primary coil comprises two segments of coils, namely two parts of a line segment and the line segment with a tap, which are arranged in parallel, wherein the line segment and the line segment with the tap comprise independent insulating layers; a line segment insulating plate is placed between two line segments, namely the line segment and the line segment with the tap, with the independent insulating layers; the line segment is electrically connected with the line segment with the tap through a line segment connection line; and the method comprises the steps as follows: the line segment and the line segment with the tap are wound and then are independently wrapped with insulating materials respectively; the line segment insulating plate is placed between the line segment and the line segment with the tap; the line segment is electrically connected with the line segment with the tap through the line segment connection line; and the line segment and the line segment with the tap are connected and then are wrapped in an insulating manner to form the complete primary coil. The primary coil is designed in the two line segments; the primary coil is easy to implement on a full-automatic winding machine; the production efficiency is double that of the whole primary coil; the voltage distribution is relatively uniform; the interlayer insulation strength is improved; the local discharge level is lowered; and the primary coil can be easily carried by hands.

The invention discloses a stator assembly and a motor with the same. The stator assembly comprises a stator core and a stator winding. The stator core is provided with a plurality of stator slots. Thestator winding comprises an A-phase winding; the A-phase winding comprises an A-phase first sub-circuit and an A-phase second sub-circuit; the A-phase first sub-circuit and the A-phase second sub-circuit are wound in parallel; the A-phase winding comprises a plurality of first-eighth sub-winding sections which are connected in sequence, and a bridging line; the initial end of the A-phase windingis connected with an A-phase outgoing line; the termination end of the eighth sub-winding section is connected with an A-phase star point line; at the corresponding welding ends of the second sub-winding section and the seventh sub-winding section of the A-phase winding, the welding ends span the (y-1) stator slots, so that the distance at the welding ends can be reduced, and for the whole windingprocess of the A phase, the distance between the A-phase star point line and the A-phase outgoing line can be reduced, so that the welding connection is easy.

The invention discloses a manufacturing method of a low-voltage formed foil for a solid aluminum electrolytic capacitor. The method mainly comprises the processes of five-stage formation treatment, primary water washing, intermediate treatment, primary heat treatment, primary repair formation, secondary water washing, hydration-resistant treatment, secondary heat treatment, secondary repair formation and drying treatment. The intermediate treatment step is achieved by putting the aluminum foil subjected to primary water washing into 0.5-5wt% of an ammonia water solution and carrying out dipping treatment for 0.5-3min at the temperature of 30-50 DEG C. The temperature of the primary heat treatment is 400-450 DEG C, and the treatment time is 4-6 minutes. A hydrated film on the surface of the formed foil can be eliminated in the intermediate treatment process, so that an organic polymer can smoothly enter the capacitor, and the capacity extraction rate of the device is further improved. The gap of the hydrated film is larger than that of a crystalline oxide film, so that the leakage current of the aluminum electrolytic capacitor is large, the problem can be well solved after the hydrated film is eliminated through the intermediate treatment step, and the leakage current of the formed foil is effectively reduced.