Patents by Inventor Xuan CAI
Xuan CAI 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).
-
Patent number: 11808793Abstract: A detection device, an inverter, and a detection method are disclosed. The detection device is configured to detect a leakage current flowing through a conductor. The detection device includes a magnetic core, a detection winding and a calibration winding both wound on the magnetic core, a detection circuit, and a calibration circuit. The detection circuit is coupled to the detection winding, and configured to sample a detection signal of the detection winding to obtain a leakage current detection value. The calibration circuit is coupled to the calibration winding, and configured to provide a calibration signal to the calibration winding.Type: GrantFiled: May 11, 2022Date of Patent: November 7, 2023Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Yu-Xi Wang, Jun-Xiong Wu, Bing-Wen Weng, Xuan-Cai Zhu
-
Publication number: 20230020049Abstract: A detection device, an inverter, and a detection method are disclosed. The detection device is configured to detect a leakage current flowing through a conductor. The detection device includes a magnetic core, a detection winding and a calibration winding both wound on the magnetic core, a detection circuit, and a calibration circuit. The detection circuit is coupled to the detection winding, and configured to sample a detection signal of the detection winding to obtain a leakage current detection value. The calibration circuit is coupled to the calibration winding, and configured to provide a calibration signal to the calibration winding.Type: ApplicationFiled: May 11, 2022Publication date: January 19, 2023Inventors: Yu-Xi WANG, Jun-Xiong WU, Bing-Wen WENG, Xuan-Cai ZHU
-
Patent number: 10745363Abstract: Provided are crystal forms A, B, D, E, F, G and H of valsartan disodium salt and a preparation method therefor.Type: GrantFiled: September 2, 2016Date of Patent: August 18, 2020Assignee: NANJING NORATECH PHARMACEUTICALS CO., LTDInventors: Fei Liu, Gang Wu, Weiming Jiang, Cheng-Gang Lin, Xuan Cai, Ping Lin, Yuling Lu, Lixiang Liu
-
Patent number: 10683260Abstract: Provided are new crystalline forms A, B, C, D and E of sacubitril sodium salt and a method for preparation thereof, pharmaceutical compositions thereof, and application thereof in preparing drugs for enkephalinase-related diseases.Type: GrantFiled: September 7, 2016Date of Patent: June 16, 2020Assignee: NANJING NORATECH PHARMACEUTICALS CO., LTD.Inventors: Fei Liu, Gang Wu, Weiming Jiang, Cheng-Gang Lin, Xuan Cai, Ping Lin, Yuling Lu, Lixiang Liu
-
Publication number: 20190202776Abstract: Provided are new crystalline forms A, B, C, D and E of sacubitril sodium salt and a method for preparation thereof, pharmaceutical compositions thereof, and application thereof in preparing drugs for enkephalinase-related diseases.Type: ApplicationFiled: September 7, 2016Publication date: July 4, 2019Applicant: NORATECH PHARMACEUTICALS, INC.Inventors: Fei LIU, Gang WU, Weiming JIANG, Cheng-Gang LIN, Xuan CAI, Ping LIN, Yuling LU, Lixiang LIU
-
Publication number: 20190194149Abstract: Provided are crystal forms A, B, D, E, F, G and H of valsartan disodium salt and a preparation method therefor.Type: ApplicationFiled: September 2, 2016Publication date: June 27, 2019Applicant: NORATECH PHARMACEUTICALS, INC.Inventors: Fei LIU, Gang WU, Weiming JIANG, Cheng-Gang LIN, Xuan CAI, Ping LIN, Yuling LU, Lixiang LIU
-
Patent number: 9231488Abstract: A power converter includes a full-bridge converter circuit and a regulation circuit. The full-bridge converter circuit includes a full-bridge circuit having a first and a second input terminals and a first and a second output terminals. The regulation circuit is bridged across the first and the second input terminals of the full-bridge circuit and connected to the first output terminal of the full-bridge circuit. The regulation circuit is configured for operatively regulating an output voltage across the first and the second output terminals of the full-bridge circuit by cooperating with the full-bridge converter circuit, such that the output voltage across the first and the second output terminals of the full-bridge circuit has more than three voltage levels. A method for controlling a power converter is also disclosed herein.Type: GrantFiled: January 2, 2013Date of Patent: January 5, 2016Assignee: DELTA ELECTRONICS, INC.Inventors: Xuan-Cai Zhu, Bing-Wen Weng
-
Publication number: 20150214831Abstract: The present invention discloses an inverter and a control method thereof. The inverter includes a first bridge leg having a series of first switch, second switch, third switch, fourth switch and fifth switch, and a second first bridge leg having a series of sixth switch, seventh switch, eighth switch, ninth switch, tenth switch. The control method includes steps of synchronously turning on or off the first switch, second switch, ninth switch and tenth switch, controlling that an on/off state of the third switch or eighth switch is complementary to an on/off state of the first switch, second switch, ninth switch and tenth switch, and synchronously turning on or off the fourth switch, fifth switch, sixth switch and seventh switch.Type: ApplicationFiled: December 22, 2014Publication date: July 30, 2015Inventors: Bing-Wen WENG, Xuan-Cai ZHU, Ke-Rou WANG
-
Patent number: 9093897Abstract: The present invention discloses an inverter and a control method thereof. The inverter includes a first bridge leg having a series of first switch, second switch, third switch, fourth switch and fifth switch, and a second first bridge leg having a series of sixth switch, seventh switch, eighth switch, ninth switch, tenth switch. The control method includes steps of synchronously turning on or off the first switch, second switch, ninth switch and tenth switch, controlling that an on/off state of the third switch or eighth switch is complementary to an on/off state of the first switch, second switch, ninth switch and tenth switch, and synchronously turning on or off the fourth switch, fifth switch, sixth switch and seventh switch.Type: GrantFiled: December 22, 2014Date of Patent: July 28, 2015Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Bing-Wen Weng, Xuan-Cai Zhu, Ke-Rou Wang
-
Publication number: 20140119060Abstract: A power converter includes a full-bridge converter circuit and a regulation circuit. The full-bridge converter circuit includes a full-bridge circuit having a first and a second input terminals and a first and a second output terminals. The regulation circuit is bridged across the first and the second input terminals of the full-bridge circuit and connected to the first output terminal of the full-bridge circuit. The regulation circuit is configured for operatively regulating an output voltage across the first and the second output terminals of the full-bridge circuit by cooperating with the full-bridge converter circuit, such that the output voltage across the first and the second output terminals of the full-bridge circuit has more than three voltage levels. A method for controlling a power converter is also disclosed herein.Type: ApplicationFiled: January 2, 2013Publication date: May 1, 2014Applicant: DELTA ELECTRONICS, INC.Inventors: Xuan-Cai ZHU, Bing-Wen WENG
-
Publication number: 20120193917Abstract: The invention discloses a pitch control system for a wind turbine and a method, comprising a main controller, a secondary controller, a motor and a pitch gearbox, wherein the main controller is connected with a plurality of the secondary controllers through a communication bus; each blade corresponds to one controller and at least two motors, and one pitch gearbox is driven by each motor. The main controller is used for calculating a pitch expected value according to wind speed as well as power and rotation speed of a generator; and the motor is driven by the secondary controller according to the pitch expected value, so as to drive the pitch gearbox and hence drive the blades to vary a pitch angle.Type: ApplicationFiled: January 20, 2012Publication date: August 2, 2012Applicant: SINOVEL WIND GROUP CO., LTD.Inventors: XI CHEN, Lei Li, Xuan Cai
-
Publication number: 20120041609Abstract: The present invention provides a control method of an automatic lubrication system of a variable-pitch bearing used for a wind turbine generator system (WTGS).Type: ApplicationFiled: April 13, 2011Publication date: February 16, 2012Applicant: SINOVEL WIND GROUP CO., LTD.Inventors: Lifu XIN, Xuan CAI, Lei LI