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301.发明公开公开(公告)号：US20230156963A1
公开(公告)日：2023-05-18
申请号：US17620628
申请日：2021-06-25
Applicant: SOUTHEAST UNIVERSITY
Inventor： Xu LIU , Junming DU , Haitao JIANG , Chengbin ZHANG , Dongping YIN
IPC: H05K7/20
CPC classification number: H05K7/20327 , H05K7/20818 , H05K7/20318 , H05K7/20836
Abstract: The invention provides a two-phase flow active and passive multi-level data center cabinet cooling device and method, wherein the system includes a cabinet cooling device, a condensate system, a waste heat recovery device, a liquid reservoir, a liquid pump, a gas chamber, a fluid working medium, and a corresponding pipeline. The system constitute a closed loop, the loop is filled with nitrogen to maintain a low pressure state, and the pipeline fluid is driven by the liquid pump to flow; the gas chamber maintains a relatively stable air pressure in the two-phase flow loop; the liquid reservoir is connected with the gas chamber, providing an enough gas space to make a phase change occur more easily; the cabinet cooling device can be switched between an active mode and a passive mode to minimize PUE under good heat dissipation capability.
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302.发明申请
公开(公告)号：US20230134219A1
公开(公告)日：2023-05-04
申请号：US17642672
申请日：2020-12-22
Applicant: SOUTHEAST UNIVERSITY
Inventor： Huiyan ZHANG , Shuping ZHANG , Qing DONG , Rui XIAO , Xiaodi LI
Abstract: A biomass pyrolysis device and a biomass pyrolysis method is for optimal matching of thermal energy and microwave energy, wherein the device comprises a power generation system, a drying device and a microwave pyrolysis device; wherein the drying device is a cylinder nested with a flue gas layer and a material layer, a material inlet of the drying device is connected with a feeding device, and a volatile outlet is connected with a condensing unit; the microwave pyrolysis device is connected with a material outlet of the drying device, and a pyrolysis gas outlet of the microwave pyrolysis device is connected with the condensing unit; the condensing unit is connected with the power generation system, and waste gas generated by the power generation system is introduced into the flue gas layer of the drying device.
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公开(公告)号：US20230052730A1
公开(公告)日：2023-02-16
申请号：US17978149
申请日：2022-10-31
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei GU , Shan SONG , Suyang ZHOU , Zhi WU
Abstract: A method for predicting the operation state of a power distribution network based on scene analysis is provided, comprising the following steps of step 10) obtaining the network structure and historical operation information of a power distribution system; step 20) extracting representative scene sequence fragments of output of the DGs according to historical output sequences of the DGs; step 30) obtaining a multi-scene prediction result of a future single-time section T0 through matching the historical similar scenes; step 40) establishing a future multi-time section operation scene tree; and step 50) deeply traversing all scenes in the future multi-time section operation scene tree, performing power distribution network load flow analysis for each scene, calculating the line current out-of-limit risk and the busbar voltage out-of-limit risk of the power distribution network, and obtaining a future operation state variation tendency of the power distribution network with the DGs.
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公开(公告)号：US20230019004A1
公开(公告)日：2023-01-19
申请号：US17762206
申请日：2020-09-25
Applicant: SOUTHEAST UNIVERSITY , CSMC TECHNOLOGIES FAB2 CO., LTD.
Inventor： Jiaxing WEI , Qichao WANG , Kui XIAO , Dejin WANG , Li LU , Ling YANG , Ran YE , Siyang LIU , Weifeng SUN , Longxing SHI
IPC: H01L29/78
Abstract: A lateral double-diffused metal oxide semiconductor field effect transistor (LDMOS), including: a trench gate including a lower part inside a trench and an upper part outside the trench, a length of the lower part in a width direction of a conducting channel being less than that of the upper part, and the lower part extending into a body region and having a depth less than that of the body region; an insulation structure arranged between a drain region and the trench gate and extending downwards into a drift region, a depth of the insulation structure being less than that of the drift region.
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305.发明申请
公开(公告)号：US20220416679A1
公开(公告)日：2022-12-29
申请号：US17622234
申请日：2021-02-04
Applicant: SOUTHEAST UNIVERSITY
Inventor： Zheng WANG , Yang XU , Pengcheng LIU , Zhixiang ZOU , Ming CHENG
Abstract: A current fed high-frequency isolated matrix converter and the corresponding modulation and control schemes are provided. The converter includes a current source full-bridge converter, a high-frequency transformer, a matrix converter, and a three-phase filter. An optimized space vector modulation solution is used for controlling the converter, and by comparing magnitudes of three-phase filter capacitor voltages to determine an action sequence of space vectors, switch tubes are turned on at zero voltage. A current source full-bridge circuit adopts a commutation strategy of a secondary clamping, and by calculating a leakage inductive current commutation time, full-bridge switch tubes are turned off at zero current to achieve safe and reliable commutation, and having advantages of a low system loss, a high efficiency, and a high power density.
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306.发明授权
公开(公告)号：US11536315B2
公开(公告)日：2022-12-27
申请号：US17770226
申请日：2021-11-29
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei Hua , Zhiheng Zhang , Qifan Xu
Abstract: The present invention discloses a magnetic bearing of a stator permanent magnet motor with magnetic pole bypasses and a bias force adjusting method thereof, and belongs to the technical field of power generation, power transformation or power distribution. A typical magnetic field loop formed by permanent magnets extending out of stator sections, radial magnetic conduction bridges, circumferential magnetic conduction bridges, magnetic collecting shoes, radial/axial working air gaps and magnetic conduction blocks of radial/axial magnetic field closed main loops is used for designing the magnetic pole bypasses, so as to achieve the distribution of the magnetic field energy with multiple paths and controllable magnetic field strength of the permanent magnets in the stator permanent magnet motor. The present invention further provides a bias magnetic circuit structure. The number of magnetic poles and the magnetic field strength of a bias magnetic field are adjusted by selecting the materials of connecting sections between magnetic collecting blocks and the volume embedded in adjacent magnetic collecting blocks, so as to adjust the bias force of the magnetic pole, the space at an end of a motor winding is used to the greatest extent, the axial length of a magnetic suspension bearing motor system is reduced, the dynamic performance of a rotor is improved, and the objectives of high compactness and high integration level of “a magnetic suspension bearing and a permanent magnet motor system” are achieved.
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公开(公告)号：US20220399653A1
公开(公告)日：2022-12-15
申请号：US17775896
申请日：2021-02-08
Applicant: SOUTHEAST UNIVERSITY , PURPLE MOUNTAIN LABORATORIES
Inventor： Zhihao JIANG , Wei HONG
Abstract: The present invention discloses a millimeter-wave dual circularly polarized lens antenna and electronic equipment. The antenna includes a broadband circularly polarized planar feed source array and a dual circularly polarized planar lens. In the planar feed source array, a double-layer stacked patch is used at the same time to achieve broadband circular polarization, and a sequentially rotating feed structure is used to further expand the bandwidth. In the planar lens, a miniaturized stacked patch and a microstrip true-time-delayed phase-shifting structure are used to obtain the independent regulation and control of the left-handed and right-handed circularly polarized wave transmissive phases in a relatively wide frequency band. The lens antenna of the present invention achieves dual circularly polarized highly directional beam, and independently control the beam pointing of the left-handed circularly polarized wave and right-handed circularly polarized wave, and achieve the transmissive dual circularly polarized beam shaping.
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公开(公告)号：US20220373122A1
公开(公告)日：2022-11-24
申请号：US17635967
申请日：2021-01-04
Applicant: SOUTHEAST UNIVERSITY
Inventor： Aiguo SONG , Tianyuan MIAO , Bincheng SHAO , Baoguo XU , Guangming SONG , Bo XU , Shuang LIU , Jihai MIN
Abstract: The present invention discloses a pipeline patrol inspection robot having variable tracks and a control method therefor. The pipeline patrol inspection robot of the present invention includes a robot body, track assemblies symmetrically disposed on a left side and a right side of the robot body, and a movement driving mechanism. The robot body is connected to the track assemblies on the left side and the right side by track fixtures, and track angle adjusting mechanisms are respectively connected between the robot body and the track assemblies on the left side and the right side. By means of the present invention, a track camber angle can be adjusted. In addition, each track angle adjusting mechanism is independent, and has desirable flexibility to adapt to different pipeline environments.
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公开(公告)号：US20220314458A1
公开(公告)日：2022-10-06
申请号：US17609446
申请日：2021-01-29
Applicant: SOUTHEAST UNIVERSITY
Inventor： Aiguo SONG , Bincheng SHAO , Huijun LI , Hong ZENG , Baoguo XU
Abstract: The present invention provides a two-degree-of-freedom rope-driven finger force feedback device. The two-degree-of-freedom rope-driven finger force feedback device includes a hand support mechanism, a thumb movement mechanism, an index finger movement mechanism, and a handle mechanism. The hand support mechanism includes a motor, a motor shaft sleeve, a sliding rail, and an inertial measurement unit (IMU) sensor. The thumb movement mechanism includes a long rotary disc, a torque sensor, an angle sensor, a thumb sleeve, a pressure sensor, two links, a thumb brace, and a thumb fixing ring. The handle mechanism includes a cylindrical handle, a pressure sensor, a flexible fixing band, and a slider. Torque is driven between the rotary disc and the motor by using a rope. The handle mechanism is movable forward and backward and is capable of automatic restoration. By means of the present invention, the problems of the high costs of a conventional finger force feedback device and the unadjustable characteristic of the conventional finger force feedback device are overcome. The device can be tightly worn and has a self-adaptive degree of freedom. Rope driving can ensure a gentle, smooth, and real feedback force. By means of the mounted sensors, information such as a hand posture, a rotation angle and a grip force of a thumb and an index finger, and a contact force of a middle finger can be transmitted in real time.
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310.发明申请
公开(公告)号：US20220311645A1
公开(公告)日：2022-09-29
申请号：US17611179
申请日：2021-03-17
Applicant: Southeast University
Inventor： Haiming WANG , Bensheng YANG , Peize ZHANG , Chen YU , Wei HONG
IPC: H04L25/02
Abstract: Disclosed is a method for estimating dense multipath parameters by means of multipolarized broadband extended array responses, which includes: first transmitting multiple different transmitted signal sequences via a multipolarized antenna array, and processing received data in multiple snapshots according to the known transmitted signals, to obtain channel responses of multipolarized antenna components at all frequency points in a frequency band; extending the obtained channel response matrixes of multiple frequency points in multiple snapshots into a large two-dimensional channel response matrix; then, acquiring a delay parameter regarding multipath propagation by using a reference array element, and estimating two-dimensional departure and arrival angles by using a channel matrix subjected to frequency domain smoothing and dimensionality reduction; and afterwards, pairing the estimated departure and arrival angles, and estimating parameters such as the cross-polarization ratios, the initial phases, and the amplitudes of the sub-paths by using the estimated parameters.
