China Petroleum & Chemical Corporation

Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

International Business Machines Corporation

Boe Technology Group Co., Ltd.

Hefei Boe Display Technology Co., Ltd.

Telefonaktiebolaget Lm Ericsson (publ)

Other

Siemens Aktiengesellschaft

Huawei Technologies Co., Limited

Tsinghua University

Cummins Inc.

Aac Technologies Pte. Ltd.

Peking University

Nuctech Company Limited

Aac Acoustic Technologies (shenzhen) Co., Ltd.

Jing Yan Ma

Haitao Liu

Mingzhi Gao

Changxiu Li

Xiaoxia Cai

Jianhua Chen

Jixing Ma

Ming Wang

Jianjun Hu

Xianzhong Li

Peng Zhao

Zhihui Zhang

Min Zhang

Huiming Wang

Xiaofan Zhang

Xiuqin Yang

Changyou Ma

Yuchong Wu

Rongcheng Liu

Tianyi Li

Ruilin Duan

Ruifeng Wang

Yaqi Shen

Peng Liu

Peng Hui Jiang

Cheng Fang Wang

Min Wang

Xiaodong Wang

Yu Ying Wang

Chen Liu

Li Cao

Peng Fei Tian

Long Zhang

Lunjia Xie

Siyuan Zhao

Zhufang Sun

Linna Yang

Fu Li Bian

Li Ni Zhang

Ming Lei Zhang

Ying Wang

Jian Li

Qiang Wang

Yang Zhang

Yu Zhu

Lili Wang

Ge Li

Hong Min

Song Li

Jun Su

Chen Wang

Wu Zhong

Li Tian

Wei Wu

Yan Xu

Junhai Xiao

Hui Liu

Zhibing Zheng

Chang Liu

Xinbo Zhou

Guang Cheng Li

Xingzhou Li

Yunde Xie

Xiaokui Wang

Chao Kong

Kaiming Yang

Jinchun Hu

Tong Jiang

Hua Cai

Yi Zhou

Wensheng Yin

Pei Li

Archit N Koti

Bo Chen Zhu

Guoming Zhao

Jin Shi

Yujie Li

Jinsong Wang

Zhongrong Yang

Hongying Liu

Guanghong Duan

Ang Li

Patrick Kaufman

Xiong Zhao

Liping Zhang

Zhenguo Ma

Chu Yun Tong

Liyao Zhang

Ze Ming Zhao

Huijuan Liu

Jinsheng Jia

Hongyan Wang

Mingsen Zhang

Dong Zhao

Siying Lu

Hui Qi

Dalong Ma

Jinbo Xu

Xiangyu Li

Gengyu Yang

Disclosed is a reactive organosilicon thixotropic agent, an organosilicon encapsulation adhesive containing the reactive organosilicon thixotropic agent, and an LED element encapsulated by using the organosilicon encapsulation adhesive. In the present disclosure, the reactive organosilicon thixotropic agent is prepared by a hydrosilylation reaction of cyclic hydrogen-containing polysiloxane or branched hydrogen-containing polysiloxane that contains phenyl with unsaturated polyether under the condition that the ratio of the total quantity of SiH bonds in the cyclic hydrogen-containing polysiloxane or the branched hydrogen-containing polysiloxane to the total quantity of olefinic bonds in the unsaturated polyether is greater than 1, can provides the organosilicon encapsulation adhesive with stable thixotropic property, high transparency, and excellent mechanical property and adhesion property at the same time, and thus an LED element having great encapsulation property is manufactured.

Reactive organosilicon thixotropic agent, organosilicon encapsulation adhesive and LED element

Portable power station

A capillary array includes a capillary region, including capillaries of a first glass, which are disposed in an axis-parallel manner. A low refractive index layer is disposed on an inner wall of each of the capillaries, the refractive index of each low refractive index layer being less than a refractive index of a liquid scintillator. A second glass material is disposed between adjacent capillaries. A softening point of the first glass is T, a softening point of second glass is T, and a value of Tminus Tis in a range from 30° C. to 50° C. A thermal expansion coefficient of the first glass is α. An edge covering region is disposed on an outer side of the capillary region and makes contact with an outer side face of the capillary region, wherein a material of the edge covering region is a third glass.

Capillary array and preparation method and application therefor

The application relates to an oscillation active damping control method and system for grid-tied type-4 wind turbine generator. The method comprises: based on an interconnection model of multiple subsystems, constructing a stored energy function and a dissipated energy function of a current inner loop control subsystem, and interaction energy functions between the current inner loop control subsystem and other subsystems are constructed, then establishing an energy feedback model of Type-4 wind turbine generator; when the oscillation occurs, obtaining instantaneous angular frequency of the PLL, and then based on the energy feedback model, adjusting the current reference value of the q-axis current inner loop generated by the reactive power outer loop control subsystem, to make the stored energy function decrease with time, so as to suppress the oscillation.

Oscillation active damping control method and system for grid-tied type-4 wind turbine generator

The disclosure relates to a method, system and storage medium for suppressing sub/super-synchronous oscillation for direct-drive wind turbine based on energy compensation. The method comprises: real-time collecting the bus voltage and the node injection current, obtaining the transient energy of direct-drive wind turbine; collecting the dynamic angle of PLL when the variation rate of the transient energy is positive, calculating the compensation energy and the increments of fundamental-frequency voltage of several supplementary energy branches based on the bus voltage and the node injection current and the dynamic angle of PLL; with the compensation energy of supplementary branches reaching the maximum and the increment of fundamental-frequency voltage being the minimum as the objective, and with the frequency-domain characteristic and fundamental-frequency voltage characteristic of control links being satisfied as the constraints, determining the compensation coefficients of supplementary energy branches, and then enabling the supplementary energy branches.

Method, system and storage medium for suppressing sub/super-synchronous oscillation for direct-drive wind turbine based on energy compensation

The invention relates to a fault transient features optimization method and system of AC/DC system based on dissipated energy, which belongs to the HVDC transmission technology and is used to solve the problem that the DC pulsed current is too high and the generator power angle swing of the AC system on the rectifier side is too large during the process of the HVDC transmission system restart on fault. The method includes the following steps: obtaining the output current and outlet bus voltage of the generator during the whole process of fault recovery of the AC/DC system under the current control parameters when adjusting the control parameters of the rectifier, and obtain multiple sets of control parameters and their corresponding output current and outlet bus voltage of the generator during the whole process of fault recovery of the AC/DC system; for each set of control parameters, calculating cumulative value of dynamic dissipated energy of the generator under the set of control parameters based on the output current and outlet bus voltage of the generator during the whole process of DC system fault recovery; selecting the set of control parameters that minimizes the cumulative value of dynamic dissipated energy of the generator as the optimal control parameter in the process of fault transient features optimization.

Fault transient features optimization method and system of AC/DC system based on dissipated energy

The present disclosure relates to improved placement, positioning, and/or orientation of radiators and baffles on a vehicle to improve and/or optimize air flow, radiator, and fuel cell performance.

Fuel cell vehicle radiator placement and orientation

The disclosure relates to a method and system for AC line distance protection in AC/DC hybrid power grid, and storage medium. The method comprises: collecting the operation parameters of inverter-side converter, AC parameters, converter bus voltage, current at distance protection installation and operation parameters of the smoothing reactor of inverter station; determining the conduction state of the inverter-side converter according to the operation parameters of the inverter-side converter; determining the current fed into the AC system from the DC system corresponding to the conduction state according to the operation parameters of the inverter-side converter, the operation parameters of the smoothing reactor of the inverter station and the converter bus voltage; determining the virtual fault location and virtual transition resistance according to fault types and AC parameters; controlling the corresponding protection device to perform the protection action according to the virtual fault location and virtual transition resistance.

Method and system for AC line distance protection in AC/DC hybrid power grid, and storage medium

An approach to optimize performance for large scale inference models. Data in the form of images is received from sensors such as cameras. The data is processed to generate data tags associated with the context of the image and portion the images. Model tags are generated based on data characteristics or user input. The tags and their associated data are added to a time-based queue for delivery to the appropriate inference models. Based on the embedded delivery time and frequency, the portioned images are delivered to the appropriate inference models.

Inference model optimization

The disclosure relates to a method and system for evaluating the stability of HVDC receiving end system and storage medium, which relates to the technical field of high voltage direct current transmission. The method includes: collecting voltage at a generator port, current at the generator port and rotational speed of the generator after eliminating fault; determining a corresponding relationship between the generator dynamic energy and the time according to the voltage at the generator port, the current at the generator port and the rotational speed of the generator; determining the attenuation intensity of the generator dynamic energy according to the corresponding relationship between the generator dynamic energy and the time; determining stability of the HVDC receiving end system according to the attenuation intensity of the generator dynamic energy.

Method and system for evaluating stability of HVDC receiving end system, and storage medium

The present disclosure discloses an ethylene degradation catalyst and a preparation method and a use thereof.

Ethylene degradation catalyst and preparation method and use thereof

Synching multiple streams in a complex enterprise product by collecting and analyzing stream dependency data. Collection and analysis of data for large scale and complex enterprise results in a multi-dimensional relationship diagram that highlights the interconnected dependencies of the streams. This allows enterprise software users to more easily determine and select which stream (or streams) will help the user to perform a given task.

Syncing streams by intelligent collection and analysis

The present disclosure is directed to a single-phase reclosing method, device and storage medium for AC/DC system. The method comprises: acquiring three-phase voltages at inverter-side AC bus close to the transformer, three-phase currents measured at the outlet of inverter-side AC line and three-phase voltages at inverter-side AC bus far from the transformer; calculating the energy calculation value and energy operation value of the fault line; identifying the fault nature of fault line within the maximum time delay, according to the energy calculation value and energy operation value of fault line and an energy criterion of transient/permanent fault; issuing a reclosing control signal based on the fault nature of fault line to realize effective reclosing of the fault line.

Single-phase reclosing method, device and storage medium for AC/DC system

The application involves a stability evaluation method and system of direct-drive wind turbine generator, which belongs to the technical field of wind power generation. It solves the problems of poor stability of direct-drive wind turbine generator, low safety performance, failure to realize mutual cooperation between online stability evaluation and parameter adjustment in the existing technology. Firstly, the variation of direct-drive wind turbine generator terminal voltage, current, power and PLL angle of direct-drive wind turbine generator is measured, the terminal energy and the energy negative gradient of direct-drive wind turbine generator is calculated. Then, the system stability is assessed according to the value of energy negative gradient, the influence of the critical parameters on system stability is analyzed and the preliminary adjustment strategy is proposed. It realizes the mutual cooperation between stability level evaluation and parameter adjustment, and improves the working efficiency of the system.

Stability evaluation method and system of direct-drive wind turbine generator

Circuit and method for preventing screen flickering, a drive circuit for a display panel, and a display apparatus are provided, relating to the field of display technology. The circuit for preventing screen flickering includes a control sub-circuit configured to control a gate drive circuit of the display panel to output a gate cut-off level during a power-on period of the display panel. The gate drive circuit of the display panel is controlled to output the gate cut-off level during the power-on period, the gate cut-off level is provided to gate lines of the display panel such that TFTs connected to the gate lines are in cut-off state during the power-on period.

Circuit and method for preventing screen flickering, drive circuit for display panel, and display apparatus

Growing community of inventors

Beijing, China

Jing Yan Ma