Patents by Inventor Wan-Pei Chen
Wan-Pei Chen 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: 11757375Abstract: A DC-AC inverter system using a state observer and a control method thereof are provided. The control method of the DC-AC inverter system includes the following steps. The state observer outputs a filter-capacitor-current estimation value at a next sampling time according to a DC link voltage at a current sampling time and a filter-capacitor-voltage actual value at the current sampling time. The filter-inductor-current estimation value at the next sampling time is compared with the filter-capacitor-current estimation value at the next sampling time to obtain a load current estimation value at the next sampling time. An inductor voltage estimator outputs a filter-inductor-voltage estimation value at the next sampling time according to the load current estimation value at the next sampling time. A feed-forward control is performed according to the filter-inductor-voltage estimation value at the next sampling time.Type: GrantFiled: April 13, 2022Date of Patent: September 12, 2023Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wan-Pei Chen, Yoshihiro Konishi, Kuan-Wen Chen, Yeh-Hsiang Ho, Wan-Ju Ho
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Publication number: 20230208318Abstract: A DC-AC inverter system using a state observer and a control method thereof are provided. The control method of the DC-AC inverter system includes the following steps. The state observer outputs a filter-capacitor-current estimation value at a next sampling time according to a DC link voltage at a current sampling time and a filter-capacitor-voltage actual value at the current sampling time. The filter-inductor-current estimation value at the next sampling time is compared with the filter-capacitor-current estimation value at the next sampling time to obtain a load current estimation value at the next sampling time. An inductor voltage estimator outputs a filter-inductor-voltage estimation value at the next sampling time according to the load current estimation value at the next sampling time. A feed-forward control is performed according to the filter-inductor-voltage estimation value at the next sampling time.Type: ApplicationFiled: April 13, 2022Publication date: June 29, 2023Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wan-Pei CHEN, Yoshihiro KONISHI, Kuan-Wen CHEN, Yeh-Hsiang HO, Wan-Ju HO
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Patent number: 9906119Abstract: A ripple-compensation control method and electrical energy conversion device utilizing the same are provided. The ripple-compensation control method is disclosed, adopted by an electrical energy conversion device including a converter configured to perform electrical energy conversion, a controller coupled to control terminals of the converter and controlling a first voltage of a DC node of the converter according to a command value, and a ripple-compensation unit configured to generate a ripple-component voltage of the first voltage and provide the command value generated based on the ripple-component voltage to the controller.Type: GrantFiled: December 16, 2015Date of Patent: February 27, 2018Assignee: Industrial Technology Research InstituteInventors: Wan-Pei Chen, Yoshihiro Konishi, Shu-Syuan Huang, Zong-Zhen Yang
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Publication number: 20170093273Abstract: A ripple-compensation control method and electrical energy conversion device utilizing the same are provided. The ripple-compensation control method is disclosed, adopted by an electrical energy conversion device including a converter configured to perform electrical energy conversion, a controller coupled to control terminals of the converter and controlling a first voltage of a DC node of the converter according to a command value, and a ripple-compensation unit configured to generate a ripple-component voltage of the first voltage and provide the command value generated based on the ripple-component voltage to the controller.Type: ApplicationFiled: December 16, 2015Publication date: March 30, 2017Inventors: Wan-Pei Chen, Yoshihiro Konishi, Shu-Syuan Huang, Zong-Zhen Yang
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Patent number: 7843707Abstract: The configurations of a non-contact power supply and a coupling detection method thereof are provided. The proposed non-contact power supply includes a detachable transformer including a primary side, a current sensor coupled to the primary side and sensing a primary side current and a controller coupled to the current sensor, receiving the current and determining whether the power supply is under a coupling status according to the current.Type: GrantFiled: December 20, 2007Date of Patent: November 30, 2010Assignee: Industrial Technology Research InstituteInventors: Ching-Piao Chen, Wan-Pei Chen, Mu-Ping Chen, Ming-Che Yang, Po-Shen Chen
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Publication number: 20080157909Abstract: The configurations of a non-contact power supply and a coupling detection method thereof are provided. The proposed non-contact power supply includes a detachable transformer including a primary side, a current sensor coupled to the primary side and sensing a primary side current and a controller coupled to the current sensor, receiving the current and determining whether the power supply is under a coupling status according to the current.Type: ApplicationFiled: December 20, 2007Publication date: July 3, 2008Applicant: Industrial Technology Research InstituteInventors: Ching-Piao Chen, Wan-Pei Chen, Mu-Ping Chen, Ming-Che Yang, Po-Shen Chen
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Publication number: 20070120636Abstract: A detachable transformer for contactless power system includes a first magnetic coupling element wound with coil and a second magnetic coupling element wound with coil. The first magnetic coupling element and the second magnetic coupling element are of symmetric shape and arranged in contactless manner to provide contactless power coupling. The first magnetic coupling element and the second magnetic coupling element are designed to have concave portion and convex portion on facing surface thereof. Therefore, the magnetic flux can be confined and the magnetic resistance is reduced to enhance conversion efficiency of the detachable transformer.Type: ApplicationFiled: August 17, 2006Publication date: May 31, 2007Inventors: Wan-Pei Chen, Mu-Ping Chen, Po-Shen Chen, Wen-Nan Huang, Po-Yen Chen
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Patent number: 7045985Abstract: A reluctance force brake device applies the coupling and combining concept of the reluctance braking unit to the original rotating source or say mechanical rotation axle for kinetic energy output. The reluctance braking unit, utilizing electrical energy from forward electrical energy source or brake reverse recover energy, generates the reverse reluctance force to reduce the speed of rotating source to operate brake action. The driving design can be extended to absorb the brake reverse recovery energy for recycling in motives related applications, which can help to upgrade or replace the bake system of traditional mechanical vehicles or electrical vehicles, and improve the applicability for drive-by-wire development trend.Type: GrantFiled: August 5, 2004Date of Patent: May 16, 2006Assignee: Industrial Technology Research InstituteInventors: Wen-Nan Huang, Ching-Cheng Teng, Wan-Pei Chen, Chih-Hsing Fang, Mu-Ping Chen
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Publication number: 20050194923Abstract: A reluctance force brake device applies the coupling and combining concept of the reluctance braking unit to the original rotating source or say mechanical rotation axle for kinetic energy output. The reluctance braking unit, utilizing electrical energy from forward electrical energy source or brake reverse recover energy, generates the reverse reluctance force to reduce the speed of rotating source to operate brake action. The driving design can be extended to absorb the brake reverse recovery energy for recycling in motives related applications, which can help to upgrade or replace the bake system of traditional mechanical vehicles or electrical vehicles, and improve the applicability for drive-by-wire development trend.Type: ApplicationFiled: August 5, 2004Publication date: September 8, 2005Inventors: Wen-Nan Huang, Ching-Cheng Teng, Wan-Pei Chen, Chih-Hsing Fang, Mu-Ping Chen
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Patent number: 6935121Abstract: A reciprocating and rotating magnetic refrigeration apparatus adopts a dynamo concept and the design of magnetic supply path and heat transfer unit to alternately magnetize and demagnetize a magnetocaloric material to generate thermo-magnetic effect for cooling. The apparatus includes magnetocaloric material located on the head of stator nose poles, magnetic supply coils surrounding the magnetocaloric material, permanent magnets located on a rotating stator, and a heat transfer unit in contact with the magnetocaloric material. Two adjacent magnetocaloric materials magnetize and demagnetize alternately to alter the temperature and entropy of the magnetocaloric material, and through the heat transfer unit, heat exchange occurs between the magnetocaloric materials and the atmosphere to achieve the cooling effect.Type: GrantFiled: December 4, 2003Date of Patent: August 30, 2005Assignee: Industrial Technology Research InstituteInventors: Chih-Hsing Fang, Wen-Nan Huang, Chih-Hsin Chen, Wan-Pei Chen, Kuo-Ing Hwu
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Publication number: 20050120720Abstract: A reciprocating and rotating magnetic refrigeration apparatus adopts a dynamo concept and the design of magnetic supply path and heat transfer unit to alternately magnetize and demagnetize a magnetocaloric material to generate thermo-magnetic effect for cooling. The apparatus includes magnetocaloric material located on the head of stator nose poles, magnetic supply coils surrounding the magnetocaloric material, permanent magnets located on a rotating stator, and a heat transfer unit in contact with the magnetocaloric material. Two adjacent magnetocaloric materials magnetize and demagnetize alternately to alter the temperature and entropy of the magnetocaloric material, and through the heat transfer unit, heat exchange occurs between the magnetocaloric materials and the atmosphere to achieve the cooling effect.Type: ApplicationFiled: December 4, 2003Publication date: June 9, 2005Inventors: Chih-Hsing Fang, Wen-Nan Huang, Chih-Hsin Chen, Wan-Pei Chen, K.I. Hwu