公开(公告)号：US11588706B2

公开(公告)日：2023-02-21

申请号：US17283257

申请日：2020-04-02

Applicant: SOUTHEAST UNIVERSITY

Inventor： Guannan Lou ,  Yinqiu Hong ,  Wei Gu ,  Xiaoyu Jiang ,  Shanlin Li ,  Quan Yang ,  Lina Sheng

IPC: H04L41/12 ,  H04L41/14 ,  H02J13/00

Abstract: A method for designing a distributed communication topology of a micro-grid based on network mirroring and global propagation rates includes the following steps: first, determining the communication connectivity of distributed directed networks in the micro-grid; next, obtaining, for connected directed communication networks, mirror networks thereof based on a mirroring operation, and selecting an optimal distributed directed communication topology corresponding to a maximum performance indicator based on algebraic connectivity and communication costs; solving, for the optimized distributed communication topology, pinned distributed generation sets corresponding to different pinning numbers based on global propagation rates and out-degrees; and finally, establishing a distributed secondary voltage control of the micro-grid based on the optimal distributed communication network and pinned nodes of the micro-grid, to achieve accurate reactive power sharing and average voltage restoration.

公开(公告)号：US11585825B2

公开(公告)日：2023-02-21

申请号：US17054133

申请日：2019-09-26

Applicant: SOUTHEAST UNIVERSITY

Inventor： Zhenxiang Yi ,  Yu Wang ,  Wenjun Deng ,  Lifeng Wang ,  Ming Qin ,  Qingan Huang

IPC: G01P5/08

Abstract: Disclosed is a wind speed sensor based on a flexible inductor and a silicon-based inductor, which relates to a MEMS device and belongs to the field of measurement and testing technologies. The wind speed sensor is a double-layer inductor structure composed of a flexible inductor and a silicon-based inductor. A metal layer of the flexible inductor and a metal layer of the silicon-based inductor face to each other and form, between them, an air cavity sufficient for mutual induction of electromotance. A contact block constituting a measuring port is deposited in the metal layer of the silicon-based inductor. The present invention has a light structure, and implements wind speed detection based on the Bernoulli effect and the coil mutual inductance effect.

公开(公告)号：US11575066B2

公开(公告)日：2023-02-07

申请号：US17606221

申请日：2019-05-29

Applicant: SOUTHEAST UNIVERSITY

Inventor： Chunxiang Xu ,  Wei Liu ,  Zengliang Shi ,  Zhuxin Li

IPC: H01L33/00 ,  H01L21/66 ,  H01L33/56

Abstract: The present invention discloses a bidirectional ultraviolet light emitting diode (UV LED) based on N—ZnO/N—GaN/N—ZnO heterojunction as well as its preparation method. The LED includes: N—ZnO microwires, a N—GaN film, a PMMA protective layer and alloy electrodes; and its preparation method includes the following steps: lay two N—ZnO microwires on the N—GaN film, then spin-coat a PMMA protective layer on the film to fix the N—ZnO microwires until the PMMA protective layer spreads over the N—ZnO microwires, and then place the film on a drying table to solidify the PMMA protective layer; then etch the PMMA protective layer with O2 to expose the N—ZnO microwires, and prepare alloy electrodes on different N—ZnO microwires to construct a N—ZnO/N—GaN/N—ZnO heterojunction to constitute a complete device. The present invention constructs an N/N/N symmetrical structure; the device is composed of N—ZnO and N—GaN, emits light in the ultraviolet region and has a small turn-on voltage.

公开(公告)号：US20220399566A1

公开(公告)日：2022-12-15

申请号：US17770529

申请日：2021-12-07

Applicant: SOUTHEAST UNIVERSITY

Inventor： Haohui DING ,  Qinran HU ,  Xiangjun QUAN ,  Xiaobo DOU ,  Zaijun WU

IPC: H01M10/0525 ,  H01M4/58 ,  H02J7/00

Abstract: The present invention discloses a high-efficiency working method for a battery energy storage system at low temperature. In the present invention, combined operation of two kinds of batteries is taken as an example to build an energy storage system framework at low temperature. A lithium iron phosphate battery and a lithium titanate battery are selected for combined operation to achieve complementary advantages of the two kinds of batteries; then, an energy storage system model for combined operation of the two kinds of batteries with the consideration of an impact of temperature on charging/discharging efficiency of the batteries is built; and finally, an optimal dispatching solution for a battery energy storage system composed of the lithium titanate battery and the lithium iron phosphate battery at low temperature is provided. By the above steps, the present invention achieves high-efficiency outputting of electricity of the battery energy storage system at low temperature, achieves complementary advantage of different kinds of batteries, and also ensures low overall cost.

公开(公告)号：US20220399158A1

公开(公告)日：2022-12-15

申请号：US17608934

申请日：2021-01-22

Applicant: SOUTHEAST UNIVERSITY

Inventor： Ming CHENG ,  Wei QIN ,  Zheng WANG ,  Xinkai ZHU

IPC: H01F27/30

Abstract: The present invention provides a magnetic-inductance component, and relates to the field of magnetic circuit theory and application, and in particular, to the design of magnetic circuit components. The magnetic-inductance component is a multi-turn short-circuit coil wound around a magnetic circuit. A magnetic-inductance value of the magnetic-inductance component is adjusted by selecting metal conductors with different numbers of turns, materials, cross-sectional areas, and lengths to change an amplitude and a phase of a magnetic flux of the magnetic circuit. The present invention purposely changes the operating state and operating trajectory of a vector in the magnetic circuit by adding the magnetic-inductance component to the magnetic circuit or removing the magnetic-inductance component from the magnetic circuit, to make a state of a magnetic flux vector in the magnetic circuit to be consistent with a target magnetic flux vector state. Compared with a magnetic circuit including a reluctance only, a magnetic circuit vector model built by using the magnetic-inductance component as a core is more consistent with the actual physical situation, which is beneficial to the improvement of the accuracy of magnetic circuit analysis and calculation.

公开(公告)号：US11522481B2

公开(公告)日：2022-12-06

申请号：US17289749

申请日：2019-04-08

Applicant: SOUTHEAST UNIVERSITY

Inventor： Hui Yang ,  Guangxu Li ,  Heyun Lin ,  Shukang Lv

IPC: H02P21/00 ,  H02P21/14 ,  H02P21/22 ,  H02P21/12

Abstract: A memory motor winding multiplexing control method and system for flux linkage observation. The method comprises the following steps: I: when the magnetization state of a memory motor needs to be adjusted, selecting a flux regulation current reference value according to a rotation speed of the motor; II: by means of current feedback control, driving a direct-current flux regulation winding to generate a flux regulation current so as to adjust the magnetization state of a permanent magnet; III: when the memory motor is operating normally, collecting an induction voltage of the flux regulation winding and extracting an induced electromotive force of the flux regulation winding; and IV: using the induced electromotive force of the flux regulation winding to calculate the flux linkage of the permanent magnet for vector control of the motor.

公开(公告)号：US20220376094A1

公开(公告)日：2022-11-24

申请号：US17762212

申请日：2020-08-26

Applicant: SOUTHEAST UNIVERSITY ,  CSMC TECHNOLOGIES FAB2 CO., LTD.

Inventor： Long ZHANG ,  Jie MA ,  Yan GU ,  Sen ZHANG ,  Jing ZHU ,  Jinli GONG ,  Weifeng SUN ,  Longxing SHI

IPC: H01L29/739 ,  H01L29/08 ,  H01L29/10 ,  H01L29/06

Abstract: An insulated gate bipolar transistor, comprising an anode second conductivity-type region and an anode first conductivity-type region provided on a drift region; the anode first conductivity-type region comprises a first region and a second region, and the anode second conductivity-type region comprises a third region and a fourth region, the dopant concentration of the first region being less than that of the second region, the dopant concentration of the third region being less than that of the fourth region, the third region being provided between the fourth region and a body region, the first region being provided below the fourth region, and the second region being provided below the third region and located between the first region and the body region.

公开(公告)号：US20220354411A1

公开(公告)日：2022-11-10

申请号：US17634418

申请日：2020-11-30

Applicant: SOUTHEAST UNIVERSITY

Inventor： Baoguo XU ,  Leying DENG ,  Yifei WANG ,  Xin WANG ,  Aiguo SONG

IPC: A61B5/372 ,  A61B5/00

Abstract: Disclosed is a natural movement electroencephalogram (EEG) recognition method based on source localization and a brain network, which includes the following steps: (1) performing multi-channel EEG measurement for natural movements; (2) preprocessing acquired EEG signals, and extracting the movement-related cortical potential (MRCP), and θ, α, β, and γ rhythms; (3) determining a lead field matrix of the signals, calculating initial solutions of sources by means of L1 regularization constraint, and then performing iteration by means of successive over-relaxation to obtain a source localization result; (4) by using the sources as nodes, calculating PLV between each pair of sources at each time point by means of short-time sliding window, and establishing brain networks; and (5) calculating a network adjacency matrix at each time point and five brain network indicators, introducing these features into a classifier for training and testing, and conducting a statistical test for the brain network indicators. The present disclosure makes improvements to the conventional source localization method by using the T-wMNE algorithm in combination with successive over-relaxation, and establishes brain networks by using the sources as nodes, thus improving the EEG decoding accuracy for natural movements and revealing the neural mechanism of the human body.

公开(公告)号：US11491071B2

公开(公告)日：2022-11-08

申请号：US16907182

申请日：2020-06-20

Applicant: SOUTHEAST UNIVERSITY

Inventor： Aiguo Song ,  Ke Shi ,  Hong Zeng ,  Huijun Li ,  Baoguo Xu ,  Xinyu Tang

IPC: A61H1/02 ,  A61B5/103 ,  A61B5/11 ,  A63B21/00 ,  A63B71/06 ,  G06F3/01

Abstract: A virtual scene interactive rehabilitation training robot based on a lower limb connecting rod model and force sense information and a control method thereof are disclosed. The thigh, calf and foot of a leg of a human body are equated to a three-connecting rod series-connected mechanical arm. A human body leg gravity compensation model is constructed. The leg posture of a patient is detected by Kinect. An interaction force between a limb of the patient and a rehabilitation robot is detected by a force sensor on the rehabilitation robot. Then, a progressive rehabilitation training method is designed for the model. According to a set weight reduction ratio, the motion of the rehabilitation robot is controlled by judging plantar force data.

公开(公告)号：US20220318443A1

公开(公告)日：2022-10-06

申请号：US17614291

申请日：2020-10-28

Applicant: SOUTHEAST UNIVERSITY

Inventor： Junyan YANG ,  Daijun CHEN ,  Yi SHI ,  Xiao ZHU ,  Huaxing SHENG ,  Beixiang SHI

IPC: G06F30/13 ,  G06F30/27 ,  G06N3/04

Abstract: The present invention discloses an artificial intelligence (AI)-based method for generating a building block in a commercial district, and relates to the field of AI urban design. According to the present invention, geographic information data of a target district and surrounding districts is acquired to construct a three-dimensional space sand table, then design conditions in various planning files and local legal regulations are translated and extracted to generate a three-dimensional building block of the district, and then a training sample library of three-dimensional contour lines of the district is constructed, a machine learning model is loaded to generate three-dimensional building heights of the district and optimize building forms, to generate a plurality of schemes for the building block of the district, and finally simulated display of the schemes and display of scheme indexes are performed by using a holographic display device, and the schemes are outputted. For the problem that a previous generation of AI technology generates a large quantity of invalid schemes, the present invention realizes the AI-based generation of a plurality of valid schemes, resolving the problem that the previous generation of AI requires a long time and large manpower to screen out a valid scheme, and improving the design efficiency for planners.