Patents by Inventor Seung-jun Chee
Seung-jun Chee 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: 9819294Abstract: An inverter control apparatus and a control method thereof are provided. The inverter control apparatus and a control method thereof stably operate a three-phase motor using a capacitor having a small capacitance for a DC link. The inverter control apparatus includes a current sensor to sense an output current of the inverter, a voltage sensor to sense a DC-link voltage of the inverter, and a controller to generate an average of a periodically varying rotor based q-axis current boundary value based on the output current and the DC-link voltage to generate a current reference on the basis of the average of the rotor based q-axis current boundary value, and to drive a three-phase motor based on the current reference. Stabilized variable speed control of a motor by using a small-capacitance capacitor for a DC link of an inverter is performed and reliability of an inverter circuit improved.Type: GrantFiled: September 2, 2015Date of Patent: November 14, 2017Assignees: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATIONInventors: Young Jae Park, Han Sol Seo, Bodrov Alexey, Seung Ki Sul, Hyun-Sam Jung, Seung-Jun Chee
-
Publication number: 20150381095Abstract: An inverter control apparatus and a control method thereof are provided. The inverter control apparatus and a control method thereof stably operate a three-phase motor using a capacitor having a small capacitance for a DC link. The inverter control apparatus includes a current sensor to sense an output current of the inverter, a voltage sensor to sense a DC-link voltage of the inverter, and a controller to generate an average of a periodically varying rotor based q-axis current boundary value based on the output current and the DC-link voltage to generate a current reference on the basis of the average of the rotor based q-axis current boundary value, and to drive a three-phase motor based on the current reference. Stabilized variable speed control of a motor by using a small-capacitance capacitor for a DC link of an inverter is performed and reliability of an inverter circuit improved.Type: ApplicationFiled: September 2, 2015Publication date: December 31, 2015Applicants: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATIONInventors: Young Jae PARK, Han Sol Seo, Bodrov Alexey, Seung Ki Sul, Hyun-Sam Jung, Seung-Jun Chee
-
Patent number: 9136790Abstract: An inverter control apparatus and a control method thereof are provided. The inverter control apparatus and a control method thereof stably operate a three-phase motor using a capacitor having a small capacitance for a DC link. The inverter control apparatus includes a current sensor to sense an output current of the inverter, a voltage sensor to sense a DC-link voltage of the inverter, and a controller to generate an average of a periodically varying rotor based q-axis current boundary value based on the output current and the DC-link voltage to generate a current reference on the basis of the average of the rotor based q-axis current boundary value, and to drive a three-phase motor based on the current reference. Stabilized variable speed control of a motor by using a small-capacitance capacitor for a DC link of an inverter is performed and reliability of an inverter circuit improved.Type: GrantFiled: November 23, 2012Date of Patent: September 15, 2015Assignees: SAMSUNG ELECTRONICS CO., LTD., SNU R&DB FOUNDATIONInventors: Young Jae Park, Han Sol Seo, Bodrov Alexey, Seung Ki Sul, Hyun-Sam Jung, Seung-Jun Chee
-
Publication number: 20140028237Abstract: An inverter control apparatus and a control method thereof are provided. The inverter control apparatus and a control method thereof stably operate a three-phase motor using a capacitor having a small capacitance for a DC link. The inverter control apparatus includes a current sensor to sense an output current of the inverter, a voltage sensor to sense a DC-link voltage of the inverter, and a controller to generate an average of a periodically varying rotor based q-axis current boundary value based on the output current and the DC-link voltage to generate a current reference on the basis of the average of the rotor based q-axis current boundary value, and to drive a three-phase motor based on the current reference. Stabilized variable speed control of a motor by using a small-capacitance capacitor for a DC link of an inverter is performed and reliability of an inverter circuit improved.Type: ApplicationFiled: November 23, 2012Publication date: January 30, 2014Applicants: SNU R&DB FOUNDATION, SAMSUNG ELECTRONICS CO., LTD.Inventors: YOUNG JAE PARK, HAN SOL SEO, BODROV ALEXEY, SEUNG KI SUL, HYUN-SAM JUNG, SEUNG-JUN CHEE
-
Patent number: 8476908Abstract: A signal capture system for capturing a signal and storing the captured signal in a storage apparatus in real time, and a test apparatus including the signal capture system. The signal capture system includes a printed circuit board; a socket that is connected to the printed circuit board and on which a reference memory component is mounted; and an interposer that is mounted on the printed circuit board, is connected to the socket, an external apparatus, and a storage apparatus, receives first signals from the reference memory component and transmits the received first signals to the external apparatus and the storage apparatus, and receives second signals from the external apparatus and transmits the received second signals to the reference memory component and the storage apparatus, wherein a shape of the socket is defined according to a type of the reference memory component.Type: GrantFiled: July 21, 2010Date of Patent: July 2, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Woon-sup Choi, Ho-sun Yoo, In-su Yang, Min-sung Kim, Jong-pill Park, In-ho Choi, Sung-yeol Kim, Jeong-gon Lee, Seung-jun Chee, Jae-il Lee, Chul-woong Jang
-
Publication number: 20110109318Abstract: A signal capture system for capturing a signal and storing the captured signal in a storage apparatus in real time, and a test apparatus including the signal capture system. The signal capture system includes a printed circuit board; a socket that is connected to the printed circuit board and on which a reference memory component is mounted; and an interposer that is mounted on the printed circuit board, is connected to the socket, an external apparatus, and a storage apparatus, receives first signals from the reference memory component and transmits the received first signals to the external apparatus and the storage apparatus, and receives second signals from the external apparatus and transmits the received second signals to the reference memory component and the storage apparatus, wherein a shape of the socket is defined according to a type of the reference memory component.Type: ApplicationFiled: July 21, 2010Publication date: May 12, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Woon-sup Choi, Ho-sun Yoo, In-su Yang, Min-sung Kim, Jong-pill Park, In-ho Choi, Sung-yeol Kim, Jeong-gon Lee, Seung-jun Chee, Jae-il Lee, Chul-woong Jang