Patents by Inventor Jianghua FENG
Jianghua FENG 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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Patent number: 11654945Abstract: A method, a device and a system for safely and reliably performing real-time speed measurement and continuous positioning are provided. With the method, inertial navigation data from an inertial navigation signal source arranged in a train is detected, and correction data from a correction signal source is detected. In a case that no correction data is detected, a current speed and a current position of the train is determined based on the inertial navigation data, and in a case that the correction data is detected, the inertial navigation data is corrected with the correction data, and a current speed and position of the train are determined based on the corrected inertial navigation data. Therefore, even in the case that no correction data is detected, the real-time speed measurement and continuous positioning can be performed safely and reliably based on the inertial navigation data.Type: GrantFiled: March 16, 2017Date of Patent: May 23, 2023Assignee: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Gaohua Chen, Jianghua Feng, Shu Cheng, Rongjun Ding, Chaoqun Xiang, Yijing Xu, Liang Han
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Publication number: 20230147692Abstract: A method and system device for performing multi-carrying of a linear motor for magnetic levitation transportation is provided. With the method for performing multi-carrying of a linear motor for magnetic levitation transportation, linear motor traction power information and other linear motor carried information are generated, and the other linear motor carried information is transmitted through a channel for carrying the linear motor traction power information that is constructed based on a linear motor structure.Type: ApplicationFiled: April 16, 2020Publication date: May 11, 2023Applicant: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Gaohua CHEN, Jianghua FENG, Rongjun DING, Yijing XU, Yu SHI, Liang HAN, Yanhui WEN, Yonghui NAN, Anfeng ZHAO, Haojiong LV, Kai FANG, Huadong LIU, Hui SHEN, Shu CHENG, Jungui SU, Zhenbang ZHOU, Cheng LI
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Patent number: 11427085Abstract: A long stator power supply section and a long stator linear motor for a maglev train, comprising a plurality of stator core modules (1) and stator coils (2) equal in number to the stator core modules (1). Each stator of the plurality of stator coils (2) is correspondingly embedded into one stator core module of the stator core modules (1) respectively; joints are arranged at both ends of each stator coil (2); the stator coils (2) on every two adjacent stator core modules (1) are detachably connected by means of the joints; and the joints of the stator coils (2) on the stator core modules (1) at both ends are connected to a feeder cable.Type: GrantFiled: October 10, 2017Date of Patent: August 30, 2022Assignee: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Gaohua Chen, Jianghua Feng, Benyu Xin, Rongjun Ding, Kuisen Tian, Shuying Guo
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Patent number: 11252630Abstract: A method and a system for rail transit communication. The method includes: selecting a second target FSO transceiver from the FSO transceivers that are currently located within a signal coverage of a target FSO base station, in response to detecting that a first target free-space-optics (FSO) transceiver moves out of the signal coverage of the target FSO base station when data communication between the target FSO base station and the target user terminal is performed via the first target FSO transceiver, where the target FSO base station is one of the FSO base stations located on the rail; and maintaining the data communication between the target FSO base station and the target user terminal, by using the second target FSO transceiver. Handover among the base stations is reduced for user equipment, data communication rate is increased, and communication experience of passengers can be improved.Type: GrantFiled: May 17, 2017Date of Patent: February 15, 2022Assignees: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD., NEW JERSEY INSTITUTE OF TECHNOLOGYInventors: Jianghua Feng, Mina Taheri, Qiang Fan, Nirwan Ansari, Roberto Rojas-Cessa, Mengchu Zhou, Gaohua Chen, Dajun Wang, Jun Tang, Tairan Zhang
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Publication number: 20210129880Abstract: A method, a device and a system for safely and reliably performing real-time speed measurement and continuous positioning are provided. With the method, inertial navigation data from an inertial navigation signal source arranged in a train is detected, and correction data from a correction signal source is detected. In a case that no correction data is detected, a current speed and a current position of the train is determined based on the inertial navigation data, and in a case that the correction data is detected, the inertial navigation data is corrected with the correction data, and a current speed and position of the train are determined based on the corrected inertial navigation data. Therefore, even in the case that no correction data is detected, the real-time speed measurement and continuous positioning can be performed safely and reliably based on the inertial navigation data.Type: ApplicationFiled: March 16, 2017Publication date: May 6, 2021Applicant: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Gaohua CHEN, Jianghua FENG, Shu CHENG, Rongjun DING, Chaoqun XIANG, Yijing XU, Liang HAN
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Publication number: 20200207215Abstract: A long stator power supply section and a long stator linear motor for a maglev train, comprising a plurality of stator core modules (1) and stator coils (2) equal in number to the stator core modules (1). Each stator of the plurality of stator coils (2) is correspondingly embedded into one stator core module of the stator core modules (1) respectively; joints are arranged at both ends of each stator coil (2); the stator coils (2) on every two adjacent stator core modules (1) are detachably connected by means of the joints; and the joints of the stator coils (2) on the stator core modules (1) at both ends are connected to a feeder cable.Type: ApplicationFiled: October 10, 2017Publication date: July 2, 2020Applicant: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Gaohua CHEN, Jianghua FENG, Benyu XIN, Rongjun DING, Kuisen TIAN, Shuying GUO
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Patent number: 10661666Abstract: A method for tractive force distribution for a power-distributed train is provided, which includes: determining a current motor car of a target train; acquiring parameter information of the current motor car; calculating, based on the parameter information, axle load transfer at four axles of the current motor car; calculating, based on the axle load transfer at the four axles of the current motor car, current axle loads on the four axles of the current motor car; and performing, based on the current axle loads on the four axles, distribution of tractive forces of the four axles of the current motor car using an electrical control compensation technology.Type: GrantFiled: June 28, 2016Date of Patent: May 26, 2020Assignees: CRRC ZHUZHOU INSTITUTE CO., LTD., ZHUZHOU CRRC TIMES ELECTRIC CO., LTD.Inventors: Wenguang Chen, Jianghua Feng, Xiong Liu, Chaolu Chen, Hua Xiao, Junfeng Xu, Huishui Peng, Peijin Xie, Yuanji Lu, Wenye Yuan, Long Wang
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Patent number: 10547382Abstract: An FSO communication system includes a laser, an optical detector and a first optical adjustment module and a controller. The laser is configured to emit an optical signal. The optical detector is configured to receive an optical signal from the first optical adjustment module. The controller is configured to obtain an optical power of an optical signal received by the optical detector; and generate a control command based on the optical power and transmit the control command. The first optical adjustment module is configured to: receive the control command and the optical signal emitted by the laser; adjust, in response to the control command, the optical signal emitted by the laser to cause the optical power of the optical signal received by the optical detector to be in a preset reasonable range; and transmit the adjusted optical signal to the optical detector.Type: GrantFiled: May 11, 2017Date of Patent: January 28, 2020Assignee: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Jianghua Feng, Jiabo Xiao, Qinghua Quan, Tairan Zhang, Guotao Jiang, Qi Lu
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Publication number: 20190380084Abstract: A method and a system for rail transit communication. The method includes: selecting a second target FSO transceiver from the FSO transceivers that are currently located within a signal coverage of a target FSO base station, in response to detecting that a first target free-space-optics (FSO) transceiver moves out of the signal coverage of the target FSO base station when data communication between the target FSO base station and the target user terminal is performed via the first target FSO transceiver, where the target FSO base station is one of the FSO base stations located on the rail; and maintaining the data communication between the target FSO base station and the target user terminal, by using the second target FSO transceiver. Handover among the base stations is reduced for user equipment, data communication rate is increased, and communication experience of passengers can be improved.Type: ApplicationFiled: May 17, 2017Publication date: December 12, 2019Applicants: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD., NEW JERSEY INSTITUTE OF TECHNOLOGYInventors: Jianghua FENG, Mina TAHERI, Qiang FAN, Nirwan ANSARI, Roberto ROJAS-CESSA, Mengchu ZHOU, Gaohua CHEN, Dajun WANG, Jun TANG, Tairan ZHANG
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Publication number: 20190253143Abstract: An FSO communication system includes a laser, an optical detector and a first optical adjustment module and a controller. The laser is configured to emit an optical signal. The optical detector is configured to receive an optical signal from the first optical adjustment module. The controller is configured to obtain an optical power of an optical signal received by the optical detector; and generate a control command based on the optical power and transmit the control command. The first optical adjustment module is configured to: receive the control command and the optical signal emitted by the laser; adjust, in response to the control command, the optical signal emitted by the laser to cause the optical power of the optical signal received by the optical detector to be in a preset reasonable range; and transmit the adjusted optical signal to the optical detector.Type: ApplicationFiled: May 11, 2017Publication date: August 15, 2019Applicant: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Jianghua FENG, Jiabo XIAO, Qinghua QUAN, Tairan ZHANG, Guotao JIANG, Qi LU
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Patent number: 10374545Abstract: A rotor temperature monitoring method and system for a permanent magnet synchronous motor are provided. According to the method and system, an a-phase line current and a b-phase line current of a stator of a permanent magnet synchronous motor are obtained as a first line current and a second line current; further, a line voltage between the a-phase and the b-phase of the stator is obtained and a rotating speed of the rotor of the permanent magnet synchronous motor is obtained; and then, the first line current, the second line current, the line voltage, the rotating speed of the rotor, an inductance parameter of the permanent magnet synchronous motor and a temperature characteristic equation of a permanent magnet of the rotor are substituted into a preset rotor permanent magnet temperature expression to calculate and obtain the temperature of the rotor.Type: GrantFiled: September 2, 2015Date of Patent: August 6, 2019Assignee: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Jianghua Feng, Jing Shang, Junfeng Xu, Yuliang Wen, Xiong Liu, Chaoyang Zhang, Lei Xiao, Yaping He, Yonghui Nan, Hanfeng Zheng
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Patent number: 10263556Abstract: A method and a system for correcting an initial zero position deviation are provided, which is applied to a permanent magnet synchronous motor and a resolver. The method includes: driving a rotor of the permanent magnet synchronous motor to rotate at a constant speed; acquiring counter electromotive forces of a stator of the permanent magnet synchronous motor and a position of a rotor of the resolver; calculating a space vector phase angle ?1 based on the counter electromotive forces; acquiring a rotation angle ?2 measured by the resolver; calculating an installation deviation ?? corresponding to the space vector phase angle ?1 and the rotation angle ?2; and adjusting a position of the resolver until the installation deviation ?? meets a precision requirement.Type: GrantFiled: July 22, 2016Date of Patent: April 16, 2019Assignee: CRRC ZHUZHOU INSTITUTE CO., LTD.Inventors: Jianghua Feng, Junfeng Xu, Yuliang Wen, Jing Shang, Jiade Huang, Xiaofan Zeng, Zhaoyang Zhang, Hanfeng Zheng, Xiong Liu, Yaping He
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Patent number: 10257719Abstract: Disclosed is a method for wireless typology discovery for train backbone networks.Type: GrantFiled: October 21, 2016Date of Patent: April 9, 2019Assignees: CRRC ZHUZHOU INSTITUTE CO., LTD., NEW JERSEY INSTITUTE OF TECHNOLOGYInventors: Jianghua Feng, Yu Liu, Osvaldo Simeone, Jun Tang, Zheng Wen, Alexander M. Haimovich, MengChu Zhou
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Patent number: 10122176Abstract: A photovoltaic intelligent power supply, comprising a plurality of unit modules, and a communication unit (103) and a control unit (106), wherein all the unit modules are connected to the control unit (106) and the communication unit (103); each unit module comprises an input collection unit (101), a data acquisition unit (102), a boost unit (104), an arc isolation unit (105) and an anti-PID unit (107), wherein the input collection unit (101) is connected to a photovoltaic module; the data acquisition unit (102) is configured to acquire voltage and current state signals; the boost unit (104) is configured to perform interleaving chopping and operate in an MPPT mode; the arc isolation unit (105) is configured to receive instructions sent by the control unit (106) to execute opening and closing; and the anti-PID unit (107) is configured to receive instructions sent by the control unit (106) so as to generate proper DC voltages to be applied between a negative electrode of a cell panel and the ground.Type: GrantFiled: October 29, 2015Date of Patent: November 6, 2018Assignee: CRRC ZHUZHOU INSTITUTE CO., LTD.Inventors: Jianghua Feng, Fang Jian, Qiang Wu, Jijing Guo, Hengliang Wu, Honghao Zhang, Yifeng Chen, Haiyan Tang, Nan Wang, Xianggui Zhao, Zhaoyi Liu, Shaolong Li, Rong Zhang
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Publication number: 20180302014Abstract: A method and a system for correcting an initial zero position deviation are provided, which is applied to a permanent magnet synchronous motor and a resolver. The method includes: driving a rotor of the permanent magnet synchronous motor to rotate at a constant speed; acquiring counter electromotive forces of a stator of the permanent magnet synchronous motor and a position of a rotor of the resolver; calculating a space vector phase angle ?1 based on the counter electromotive forces; acquiring a rotation angle ?2 measured by the resolver; calculating an installation deviation ?? corresponding to the space vector phase angle ?1 and the rotation angle ?2; and adjusting a position of the resolver until the installation deviation ?? meets a precision requirement.Type: ApplicationFiled: July 22, 2016Publication date: October 18, 2018Applicant: CRRC ZHUZHOU INSTITUTE CO., LTD.Inventors: Jianghua FENG, Junfeng XU, Yuliang WEN, Jing SHANG, Jiade HUANG, Xiaofan ZENG, Zhaoyang ZHANG, Hanfeng ZHENG, Xiong LIU, Yaping HE
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Patent number: 10033313Abstract: A control method for restarting a permanent magnet synchronous motor (PMSM) in a rotating condition, and a device and a system thereof are provided. In the method, an electrical angular speed ?e of the PMSM is obtained based on a speed of a trailer to obtain a back electromotive force of the PMSM. The back electromotive force is compared with a voltage at a side of an inverter, and if the electromotive force of the permanent magnet synchronous motor is higher than the voltage at the side of the inverter, the restarting of the PMSM is forbidden, otherwise, the restarting of the PMSM is allowed. Therefore, in the present disclosure, the low-speed operating condition and the high-speed operating condition correspond to different position angles of the rotor, and the PMSM is started based on the position angle of the rotor.Type: GrantFiled: December 16, 2013Date of Patent: July 24, 2018Assignee: CSR ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Jianghua Feng, Kean Liu, Junfeng Xu, Jing Shang, Yuliang Wen, Yaping He, Chaoyang Zhang, Xiong Liu, Yonghui Nan, Huadong Liu, Lei Xiao, Hanfeng Zheng
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Publication number: 20180201157Abstract: A method for tractive force distribution for a power-distributed train is provided, which includes: determining a current motor car of a target train; acquiring parameter information of the current motor car; calculating, based on the parameter information, axle load transfer at four axles of the current motor car; calculating, based on the axle load transfer at the four axles of the current motor car, current axle loads on the four axles of the current motor car; and performing, based on the current axle loads on the four axles, distribution of tractive forces of the four axles of the current motor car using an electrical control compensation technology.Type: ApplicationFiled: June 28, 2016Publication date: July 19, 2018Applicants: CRRC ZHUZHOU INSTITUTE CO., LTD., ZHUZHOU CRRC TIMES ELECTRIC CO., LTD.Inventors: Wenguang CHEN, Jianghua FENG, Xiong LIU, Chaolu CHEN, Hua XIAO, Junfeng XU, Huishui PENG, Peijin XIE, Yuanji LU, Wenye YUAN, Long WANG
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Direct-axis current protection method and device for permanent magnet synchronous motor drive system
Patent number: 9991829Abstract: A direct-axis current protection method and device for a permanent magnet synchronous motor drive system. The method includes: pre-calculating the direct-axis current of the next moment according to the current voltage transmitted from an inverter to a permanent magnet synchronous motor (PMSM); comparing the direct-axis current of the next moment with a maximum protection current; if the direct-axis current of the next moment is less than the maximum protection current, continuing transmitting the current voltage to the PMSM; if the direct axis current of the next moment is greater than or equal to the maximum protection current, redistributing the voltage according to a protection direct-axis current and a protection quadrature-axis current, and transmitting the redistributed voltage to the PMSM. The direct-axis current of the next moment is tended to be normal by adjusting the voltage.Type: GrantFiled: December 16, 2013Date of Patent: June 5, 2018Assignee: CSR ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Jianghua Feng, Kean Liu, Junfeng Xu, Yaping He, Yuliang Wen, Jing Shang, Chaoyang Zhang, Xiong Liu -
Patent number: 9837946Abstract: A method and device for acquiring a rotor position based on a permanent magnet synchronous drive system. The permanent magnet synchronous drive system includes an inverter and a permanent magnet synchronous motor, wherein the initial speed of the permanent magnet synchronous motor is not zero. The method includes: controlling a bridge arm switch of an inverter periodically; collecting a three-phase current of the permanent magnet synchronous motor at a fixed time within each control period; and after the three-phase current is reversed, sending same to a phase-locked loop system to conduct processing, so as to obtain a phase angle of an induction potential vector, and according to the phase angle of the induction potential vector, acquiring a rotor position angle of the permanent magnet synchronous motor.Type: GrantFiled: March 3, 2015Date of Patent: December 5, 2017Assignee: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.Inventors: Jianghua Feng, Kean Liu, Jing Shang, Junfeng Xu, Lei Xiao, Chaoyang Zhang, Yuliang Wen, Yaping He, Xiong Liu
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Publication number: 20170338765Abstract: A rotor temperature monitoring method and system for a permanent magnet synchronous motor are provided. According to the method and system, an a-phase line current and a b-phase line current of a stator of a permanent magnet synchronous motor are obtained as a first line current and a second line current; further, a line voltage between the a-phase and the b-phase of the stator is obtained and a rotating speed of the rotor of the permanent magnet synchronous motor is obtained; and then, the first line current, the second line current, the line voltage, the rotating speed of the rotor, an inductance parameter of the permanent magnet synchronous motor and a temperature characteristic equation of a permanent magnet of the rotor are substituted into a preset rotor permanent magnet temperature expression to calculate and obtain the temperature of the rotor.Type: ApplicationFiled: September 2, 2015Publication date: November 23, 2017Inventors: Jianghua FENG, Jing SHANG, Junfeng XU, Yuliang WEN, Xiong LIU, Chaoyang ZHANG, Lei XIAO, Yaping HE, Yonghui NAN, Hanfeng ZHENG