Patents by Inventor Jianjun Ni
Jianjun Ni has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240070372Abstract: A quantum layout optimization method includes: determining target Hamiltonian parameters of a quantum device; determining an initial quantum layout of the quantum device and initial geometric parameters of the initial quantum layout; determining a target gradient of Hamiltonian parameters of the quantum device to geometric parameters of the initial quantum layout; and adjusting the initial geometric parameters based on the target gradient to have the Hamiltonian parameters of the quantum device be the target Hamiltonian parameters to obtain a target quantum layout.Type: ApplicationFiled: July 13, 2023Publication date: February 29, 2024Inventors: Tian XIA, Feng WU, Jianjun CHEN, Xiaotong NI, Qi YE, Huihai ZHAO
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Patent number: 11807116Abstract: A charging system includes a multi-pulse transformer, n AC-DC conversion units, n power supply terminals and a charging scheduling apparatus. A plurality of secondary windings of the multi-pulse transformer form n winding pairs. The n AC-DC conversion units are coupled to the n winding pairs in a one-to-one correspondence. The n power supply terminals are coupled to the n AC-DC conversion units in a one-to-one correspondence. The charging scheduling apparatus are configured to detect the number of charging devices and states of the power supply terminals, and determine M target winding pairs from the n winding pairs for supplying power to the charging devices. The M target winding pairs include a winding pair distributed close to a first end of the magnetic core and a winding pair distributed close to a second end of the magnetic core.Type: GrantFiled: May 20, 2021Date of Patent: November 7, 2023Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Liping Sun, Hongyang Wu, Jianjun Ni, Teng Liu
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Patent number: 11650194Abstract: A dynamic damage evaluation instrument of drilling fluid based on a glass core includes a controller and a support. A kettle body is provided on the support, a well for receiving drilling fluid is provided inside the kettle body, and a well cover is provided at an upper end of the kettle body. A core holding assembly communicating with the well is provided at a side of the kettle body, and a metering assembly is movably provided at the other end of the core holding assembly. A stirrer for stirring drilling fluid is provided inside the well, and a power component for driving the stirrer is provided outside the kettle body. A data detection hole for mounting a temperature and pressure sensor and a pressurization hole for mounting a pressurization device are formed on the well cover.Type: GrantFiled: January 11, 2022Date of Patent: May 16, 2023Assignee: Chengdu University of TechnologyInventors: Jiping She, Hao Zhang, Bin Yang, Yang Yang, Yang Li, Jianjun Ni, Gege Teng, Ying Zhong
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Publication number: 20230008746Abstract: An automatically-cleanable thickening performance evaluation instrument for drilling LCMs includes a cleaning device, a kettle body, a thickening motor, a heating component, a test ending component, a top cover, and a bottom cover, where upper and lower ends of the kettle body are both opened; the kettle body is arranged in a third bearing inner race, a third bearing outer race is connected to a first limb, and the first limb is configured to limit a position of the kettle body; and the kettle body is detachably connected to the thickening motor and driven by the thickening motor to rotate. The instrument can realize electric heating and air pressurization to simulate the underground environment, and the kettle body can be completely sealed, such that a measured thickening time is close to an actual thickening time. Moreover, the instrument can be automatically cleaned at the end of a test.Type: ApplicationFiled: February 15, 2022Publication date: January 12, 2023Applicant: Chengdu University of TechnologyInventors: Jiping SHE, Hao ZHANG, Yang YANG, Bin YANG, Yang LI, Jianjun NI, Shiyu ZHANG, Ying ZHONG
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Patent number: 11444546Abstract: The power supply device includes a first winding, a second winding, a third winding, a fourth winding, a first AC-DC conversion unit, a second AC-DC conversion unit, a first power supply terminal and a second power supply terminal. The first and second windings are disposed on a secondary side of a multi-pulse transformer, and coupled to an input of the first AC-DC conversion unit. The first power supply terminal is coupled to an output of the first AC-DC conversion unit. The third and fourth windings are disposed on the secondary side of the multi-pulse transformer, and coupled to an input of the second AC-DC conversion unit. The second power supply terminal is coupled to an output of the second AC-DC conversion unit. Phases of output voltages of the first winding, the third winding, the second winding and the fourth winding are successively shifted left or successively shifted right for 15°.Type: GrantFiled: April 17, 2020Date of Patent: September 13, 2022Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Chao Yan, Hongyang Wu, Liping Sun, Jianjun Ni
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Publication number: 20220229039Abstract: A dynamic damage evaluation instrument of drilling fluid based on a glass core includes a controller and a support. A kettle body is provided on the support, a well for receiving drilling fluid is provided inside the kettle body, and a well cover is provided at an upper end of the kettle body. A core holding assembly communicating with the well is provided at a side of the kettle body, and a metering assembly is movably provided at the other end of the core holding assembly. A stirrer for stirring drilling fluid is provided inside the well, and a power component for driving the stirrer is provided outside the kettle body. A data detection hole for mounting a temperature and pressure sensor and a pressurization hole for mounting a pressurization device are formed on the well cover.Type: ApplicationFiled: January 11, 2022Publication date: July 21, 2022Applicant: Chengdu University of TechnologyInventors: Jiping SHE, Hao ZHANG, Bin YANG, Yang YANG, Yang LI, Jianjun NI, Gege TENG, Ying ZHONG
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Publication number: 20220164512Abstract: A design method of a transformer repeats following steps until a preset condition is met: calculating an output voltage of each secondary winding according to a phase shift angle and a number of turns of the each secondary winding; obtaining a difference between output voltages of each secondary winding pair in a secondary winding set; adjusting the phase shift angle of at least one secondary winding in the secondary winding set; and obtaining a final number of turns for the each secondary winding according to a resultant phase shift angle corresponding to when the preset condition is met; where the preset condition is that the difference between the output voltages of any secondary winding pair in the secondary winding set is less than or equal to a preset threshold.Type: ApplicationFiled: November 23, 2021Publication date: May 26, 2022Inventors: Liping SUN, Hongyang WU, Jianjun NI
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Publication number: 20210362611Abstract: A charging system includes a multi-pulse transformer, n AC-DC conversion units, n power supply terminals and a charging scheduling apparatus. A plurality of secondary windings of the multi-pulse transformer form n winding pairs. The n AC-DC conversion units are coupled to the n winding pairs in a one-to-one correspondence. The n power supply terminals are coupled to the n AC-DC conversion units in a one-to-one correspondence. The charging scheduling apparatus are configured to detect the number of charging devices and states of the power supply terminals, and determine M target winding pairs from the n winding pairs for supplying power to the charging devices. The M target winding pairs include a winding pair distributed close to a first end of the magnetic core and a winding pair distributed close to a second end of the magnetic core.Type: ApplicationFiled: May 20, 2021Publication date: November 25, 2021Inventors: Liping SUN, Hongyang WU, Jianjun NI, Teng LIU
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Publication number: 20200336081Abstract: The power supply device includes a first winding, a second winding, a third winding, a fourth winding, a first AC-DC conversion unit, a second AC-DC conversion unit, a first power supply terminal and a second power supply terminal. The first and second windings are disposed on a secondary side of a multi-pulse transformer, and coupled to an input of the first AC-DC conversion unit. The first power supply terminal is coupled to an output of the first AC-DC conversion unit. The third and fourth windings are disposed on the secondary side of the multi-pulse transformer, and coupled to an input of the second AC-DC conversion unit. The second power supply terminal is coupled to an output of the second AC-DC conversion unit. Phases of output voltages of the first winding, the third winding, the second winding and the fourth winding are successively shifted left or successively shifted right for 15°.Type: ApplicationFiled: April 17, 2020Publication date: October 22, 2020Inventors: Chao YAN, Hongyang WU, Liping SUN, Jianjun NI
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Patent number: 10208948Abstract: The present invention demonstrates a solid fuel grade gasification-combustion dual bed poly-generation system, comprising a combustion system, a gasification system, a synthesized gas cooling and purifying system and a synthesized gas methanation system. The combustion system is connected with the gasification system through a circulating material return system. The gasification system mainly adapts the circulating fluidized-bed combustion mode. The gasification system adapts the fluidized-bed incomplete gasification method and the generated semi-coke is returned to the combustion system for re-utilization. The synthesized gas purifying and cooling unit adapts water cycling and combustible recycling. The by-products, CO2 and steam, in the methanation unit can be recovered, so the maximum utilization rate of energy in this system is realized.Type: GrantFiled: February 4, 2015Date of Patent: February 19, 2019Assignee: SHANGHAI BOILER WORKS CO., LTD.Inventors: Jianjun Ni, Zhen Yang, Nan Chen, Jie Xiong
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Patent number: 9887631Abstract: Disclosed are a current sampling apparatus and a current sampling method for an isolated power converter. The isolated power converter includes a square wave generator, an isolated transformer, and a primary side filter circuit coupled therebetween. The current sampling apparatus includes: a first sampling circuit coupled to the primary side of the isolated transformer and sampling a total current of the primary side of the isolated transformer and outputting a first sampling current; and a shunt circuit receiving the first sampling current. The shunt circuit includes a first shunt branch circuit through which the first sampling current is transformed into an excitation sampling current and a second shunt branch circuit through which the first sampling current is transformed into a current to be sampled.Type: GrantFiled: June 25, 2015Date of Patent: February 6, 2018Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Chao Yan, Liping Sun, Jianjun Ni, Baochen Wang
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Publication number: 20170321889Abstract: The present invention demonstrates a solid fuel grade gasification-combustion dual bed poly-generation system, comprising a combustion system, a gasification system, a synthesized gas cooling and purifying system and a synthesized gas methanization system. The combustion system is connected with the gasification system through a circulating material return system. The gasification system mainly adapts the circulating fluidized-bed combustion mode. The gasification system adapts the fluidized-bed incomplete gasification method and the generated semi-coke is returned to the combustion system for re-utilization. The synthesized gas purifying and cooling unit adapts water cycling and combustible recycling. The by-products, CO2 and steam, in the methanization unit can be recovered, so the maximum utilization rate of energy in this system is realized.Type: ApplicationFiled: February 4, 2015Publication date: November 9, 2017Inventors: JIANJUN NI, ZHEN YANG, NAN CHEN, JIE XIONG
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Publication number: 20150381061Abstract: Disclosed are a current sampling apparatus and a current sampling method for an isolated power converter. The isolated power converter includes a square wave generator, an isolated transformer, and a primary side filter circuit coupled therebetween. The current sampling apparatus includes: a first sampling circuit coupled to the primary side of the isolated transformer and sampling a total current of the primary side of the isolated transformer and outputting a first sampling current; and a shunt circuit receiving the first sampling current. The shunt circuit includes a first shunt branch circuit through which the first sampling current is transformed into an excitation sampling current and a second shunt branch circuit through which the first sampling current is transformed into a current to be sampled.Type: ApplicationFiled: June 25, 2015Publication date: December 31, 2015Inventors: Chao Yan, Liping SUN, Jianjun NI, Baochen WANG
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Patent number: 8116350Abstract: A passive tracking system is provided with a plurality of ultrawideband (UWB) receivers that is asynchronous with respect to a UWB transmitter. A geometry of the tracking system may utilize a plurality of clusters with each cluster comprising a plurality of antennas. Time Difference of Arrival (TDOA) may be determined for the antennas in each cluster and utilized to determine Angle of Arrival (AOA) based on a far field assumption regarding the geometry. Parallel software communication sockets may be established with each of the plurality of UWB receivers. Transfer of waveform data may be processed by alternately receiving packets of waveform data from each UWB receiver. Cross Correlation Peak Detection (CCPD) is utilized to estimate TDOA information to reduce errors in a noisy, multipath environment.Type: GrantFiled: January 14, 2009Date of Patent: February 14, 2012Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: G. Dickey Arndt, Phong H. Ngo, Chau T. Phan, Julia A. Gross, Jianjun Ni, John Dusl