Huawei Technologies Co., Limited

Huawei Digital Power Technologies Co., Ltd.

Institute of Quality Standard and Testing Technology for Agro-products, Caas

Zte Corporation

China Mobile Communications Corporation

Spic Qinghai Photovoltaic Industry Innovation Center Co., Ltd.

Zhen Cao

Rahul Arvind Jadhav

Lei Shi

Jianjian Zhu

K Anmol Mani Tejeswar Sarma

Jing Wang

Dong Chen

Yunfeng Liu

Yanzhong Zhang

Fanzhao Wang

Neng Yang

Rabi Narayan Sahoo

Hui Li

Dianbo Fu

Wei Chen

Yang Zhang

Kai Zheng

Yongbing Gao

Wei Li

Xun Wang

Zhong Shi Wang

Guilei Gu

Ke Jin

Hui Deng

Xiaofeng Yao

Fei Zheng

Cong Xiao

Tao Shi

Jun Pan

Jie Kong

Zhijian Sun

Shi Tang

Xuelong Yuan

Min Hui

Hua Shen

Xiangdong Yin

Baicheng Fu

Wenneng Huang

Markku Kojo

Ilpo Jarvinen

Nagesh S

Su Zhou

Hualong Fan

Jiajia He

Feng Chong

Shaopan Hou

Jie Zhang

Hao Qiu

A backfeed soft-start circuit for a photovoltaic inverter is provided. The backfeed soft-start circuit includes a plurality of branch switches. A solar photovoltaic array includes a plurality of photovoltaic modules, where the plurality of branch switches are in a one-to-one correspondence with the plurality of photovoltaic modules, and when the plurality of branch switches are turned on, the corresponding photovoltaic modules are connected to the backfeed soft-start circuit; and a primary switching switch. The branch switches is connected to a corresponding photovoltaic module, and the primary switching switch. The primary switching switch is turned on after the branch switch is turned on.

Backfeed soft-start circuit for string photovoltaic inverter

A serial-parallel converter protection system includes a controller, a drive, a first switching transistor, and a second switching transistor. An input terminal of a converter is connected to an output terminal of the converter through the first switching transistor. The output terminal of the converter is connected in parallel with the second switching transistor. When an output voltage of the converter is greater than a first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on. In some embodiments, when the output voltage of the converter is greater than the first threshold, the controller controls the first switching transistor to be turned off and controls the second switching transistor to be turned on, so that the converter is bypassed, thereby preventing a voltage and a current from impacting a component inside the converter.

Serial-parallel converter protection system, controller, and converter

A short-circuit protection apparatus includes a first detection branch, a second detection branch, and a controller. The first detection branch includes a first sampling resistor and a first sampling capacitor that is connected in parallel to the first sampling resistor. A difference between an absolute value of a second sampling voltage and an absolute value of a first sampling voltage is a first difference. The controller obtains a comparison result between an absolute value of a first sampling voltage at two terminals of the first sampling resistor and an absolute value of a second sampling voltage at two terminals of the second sampling resistor, and if a difference between the absolute value of the second sampling voltage and the absolute value of the first sampling voltage is a second difference and the second difference is less than the first difference, controls the target circuit to stop working.

Short-circuit protection apparatus, short-circuit protection method for target circuit, and power conversion device

A breaker apparatus and an inverter system are configured to disconnect an electrical connection when a fault occurs in a protected circuit. The breaker apparatus is connected in series in a protected circuit, and is configured to disconnect the electrical connection when a fault occurs in the protected circuit. The breaker apparatus includes a first branch, and a second branch. The first branch includes an overcurrent-automatic-disconnection unit and a first current limiting unit that are connected in series, where the overcurrent-automatic-disconnection unit is configured to be automatically disconnected when a current flowing through the overcurrent-automatic-disconnection unit exceeds a breaking current threshold. The a second branch is configured to be open or closed under control of the controller. The controller is configured to control the first controllable switch unit to be closed when the protected circuit operates normally, and control the first controllable switch unit to be open when a fault occurs in the protected circuit.

Direct current breaker feeding an inverter

A network switching method includes transmitting, by an electronic device, data using a wireless local area network, when a data transmission delay of the wireless local area network is greater than a first threshold, switching, by the electronic device, to transmitting data using both the wireless local area network and a mobile network, and when the electronic device transmits data using both the wireless local area network and the mobile network, if the data transmission delay of the wireless local area network is greater than a second threshold, switching, by the electronic device, to transmitting data using the mobile network, where the first threshold is less than the second threshold.

Network switching method, electronic device, and system on chip

A power converter box and at least one junction box are integrated on a backplane of the photovoltaic module as a whole, and there is a cable for connecting the power converter and the junction box. In this case, relative to the conventional technology in which a junction box is independent of a power converter, a length of a cable used when the junction box and the power converter box are taken as a whole is shorter than a length of a cable used in the conventional technology. In this case, compared with the conventional technology in which a cable is connected to an independently placed power converter, the power converter only needs to establish a connection relationship by using a solder ribbon, a circuit board cable, and the like with low costs, so that production costs are low.

Photovoltaic module and photovoltaic system

A data processing method and apparatus, where one or more applications run in an operating system of a first device, there is a plurality of paths between the first device and a second device, and the paths correspond to the one or more applications. In a data receiving process, the one or more applications obtain data on the paths through a system call, and further obtain data in a plurality of packets from at least one path. In a data sending process, the one or more applications distribute data to corresponding paths through a system call.

Data processing method and apparatus

The present disclosure relates to apparatus and methods for route invalidation. In one example method, a common ancestor node of a network determines switching of a parent node of a node based on an update message received from the node using a new routing path established based on the switching of the parent node. The common ancestor node generates a No-Path message based on the update message. The No-Path message is for invalidating a previous routing path associated with the node on the switching of the parent node. The update message comprises at least one bit authorizing generation of the No-Path message by the common ancestor node. The at least one bit is placed in a transit information option in the update message.

Apparatus and method for optimized route invalidation using modified No-Path DAO signaling

This application provide a retransmission control method, a communications interface, and an electronic device. When a transmit end transmits a first data packet to a receive end and does not receive an acknowledgement corresponding to the first data packet within a first RTO, the transmit end retransmits a second data packet based on a second RTO. The second data packet is a data packet transmitted by the transmit end after the transmit end transmits the first data packet. The second RTO is related to a receive timestamp of the acknowledgement corresponding to the first data packet and a transmit timestamp of the first data packet.

Retransmission control method, communications interface, and electronic device

A data processing method includes receiving, by an operating system of a device, a start instruction from an application in the device that includes an identifier of a socket connection, where the application is a latency-insensitive application, calling, by the operating system according to the start instruction, a monitoring system in the operating system to monitor buffering of data of the socket connection in a kernel buffer, where the data of the socket connection is from an underlying protocol stack, and generating, by the monitoring system, a data readable identifier when a time interval between a current moment and a start moment is greater than or equal to a timeout duration, where the start moment is when the operating system receives the start instruction, and the data readable identifier indicates that the data of the socket connection is readable by the application.

Data processing method and apparatus, and device

A detection device, the device comprising a sample liquid bearing device (), test strips (), a test strips bearing plate () and a signal acquisition positioning assisting device, wherein the sample liquid bearing device () comprises two or more samples cells () used for containing sample liquid, each of the test strips () at least comprises an identity information bearing part (), a developing part () and a capillary part (), the test strip bearing plate () is used for placing the test strips () in the same circular ring in a circumferential array radial manner, and the signal acquisition positioning assisting device is arranged on the test strip bearing plate and is used for positioning the test strips.

Detection device, sample solution loading device, test strip loading board and test strip

A method and system for detecting a target component by using a mobile terminal, and a detection method for simultaneously screening multiple target objects. The method for detecting a target component by using a mobile terminal comprises: detecting a target component by using test strips () to obtain chromogenic test strips (); arranging the test strips () around a same circle center at equal angles to obtain an arrangement ring of test strips (), positioning identifiers being provided on an area outside the test strips () on the arrangement ring of the test strips (); performing image acquisition on the arrangement ring of the test strips () by using a mobile terminal, and uploading an acquired image to a data processing center, correcting the acquired image according to the positioning identifiers; determining the positions of a personalized mark area and a result display area of each test strip () in the image; performing segmentation to obtain images of the personalized mark area and the result display area of each test strip (); calculating a chromogenic result of the result display area, and obtaining a test result of the target component; and outputting the test result of the target component and displaying the test result on the mobile terminal.

Method and system for detecting target components by utilizing mobile terminal

System call batching for network I/O

This application provides example data transmission methods and corresponding example devices. One example method includes sending, by a first device, a first packet to a second device, where the first packet includes transmission policy negotiation information, and where the transmission policy negotiation information is used to negotiate a transmission policy used when the second device uses a multipath connection. The first device can then receive a second packet from the second device, where the second packet includes first policy information, and where the first policy information indicates a transmission policy used when the second device uses the multipath connection. The first device can then transmit data with the second device based on the first policy information by using a transmission policy corresponding to the first policy information.

Data transmission method and corresponding device

Growing community of inventors

Beijing, China

Zhen Cao