Patents by Inventor Byung Choul KIM
Byung Choul KIM 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: 10672574Abstract: Provided is a DC breaker that can block a fault current generated in a direct current line, by using a unidirectional semiconductor switch device. The DC breaker includes: a mechanical switch that is connected between first and second direct current lines; a first unidirectional semiconductor switch device that transfers a resonant current to the first direct current line when the fault current is generated, so that a current of the first direct current line becomes zero; an LC resonant circuit that is charged by receiving a steady state current of the first direct current line, and generates the resonant current to the first unidirectional semiconductor switch device when the fault current is generated; and a second unidirectional semiconductor switch device that enables a capacitor of the LC resonant circuit to be charged with the steady state current of the first direct current line.Type: GrantFiled: June 22, 2016Date of Patent: June 2, 2020Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATIONInventor: Byung Choul Kim
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Patent number: 10476255Abstract: Disclosed is a DC circuit breaker capable of interrupting fault currents flowing in both forward and backward directions. The DC circuit breaker includes: a mechanical switch installed on a DC transmission line and being opened to interrupt a current in the DC transmission line when a fault occurs at one side or remaining side thereof on the DC transmission line; a first bidirectional switching device connected in parallel with the mechanical switch and switching currents flowing in both forward and backward directions; an LC circuit connected in parallel with the mechanical switch and including a capacitor and a reactor connected in series to induce LC resonance; a first unidirectional switching device connected in parallel with the LC circuit and switching a current to induce LC resonance; and a second bidirectional switching device connected in series with the LC circuit and switching currents flowing in both forward and backward directions.Type: GrantFiled: December 24, 2015Date of Patent: November 12, 2019Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATIONInventors: Byung Choul Kim, Jung Ki Hong, Young Seong Han
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Patent number: 10418210Abstract: Disclosed is a DC circuit breaker capable of interrupting fault currents flowing in both forward and backward directions. The DC circuit breaker includes: a first mechanical switch for interrupting a current in a DC transmission line; a first diode connected in parallel with the first mechanical switch; a second mechanical switch, connected in series with the first mechanical switch, for interrupting a current in the DC transmission line; a second diode connected in parallel with the second mechanical switch; an LC circuit connected in parallel with the first and second mechanical switches and including a capacitor and a reactor connected in series to induce LC resonance; a first unidirectional switching device connected in parallel with the LC circuit and switching a current to induce LC resonance; and a bidirectional switching device connected in series with the LC circuit and switching currents flowing in both forward and backward directions.Type: GrantFiled: December 24, 2015Date of Patent: September 17, 2019Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATIONInventors: Byung Choul Kim, Se Hee Han, Jung Ki Hong, Young Seong Han
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Publication number: 20180174784Abstract: Provided is a DC breaker that can block a fault current generated in a direct current line, by using a unidirectional semiconductor switch device. The DC breaker includes: a mechanical switch that is connected between first and second direct current lines; a first unidirectional semiconductor switch device that transfers a resonant current to the first direct current line when the fault current is generated, so that a current of the first direct current line becomes zero; an LC resonant circuit that is charged by receiving a steady state current of the first direct current line, and generates the resonant current to the first unidirectional semiconductor switch device when the fault current is generated; and a second unidirectional semiconductor switch device that enables a capacitor of the LC resonant circuit to be charged with the steady state current of the first direct current line.Type: ApplicationFiled: June 22, 2016Publication date: June 21, 2018Inventor: Byung Choul KIM
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Publication number: 20180019084Abstract: Disclosed is a DC circuit breaker capable of interrupting fault currents flowing in both forward and backward directions. The DC circuit breaker includes: a first mechanical switch for interrupting a current in a DC transmission line; a first diode connected in parallel with the first mechanical switch; a second mechanical switch, connected in series with the first mechanical switch, for interrupting a current in the DC transmission line; a second diode connected in parallel with the second mechanical switch; an LC circuit connected in parallel with the first and second mechanical switches and including a capacitor and a reactor connected in series to induce LC resonance; a first unidirectional switching device connected in parallel with the LC circuit and switching a current to induce LC resonance; and a bidirectional switching device connected in series with the LC circuit and switching currents flowing in both forward and backward directions.Type: ApplicationFiled: December 24, 2015Publication date: January 18, 2018Inventors: Byung Choul KIM, Se Hee HAN, Jung Ki HONG, Young Seong HAN
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Publication number: 20170358917Abstract: Disclosed is a DC circuit breaker capable of interrupting fault currents flowing in both forward and backward directions. The DC circuit breaker includes: a mechanical switch installed on a DC transmission line and being opened to interrupt a current in the DC transmission line when a fault occurs at one side or remaining side thereof on the DC transmission line; a first bidirectional switching device connected in parallel with the mechanical switch and switching currents flowing in both forward and backward directions; an LC circuit connected in parallel with the mechanical switch and including a capacitor and a reactor connected in series to induce LC resonance; a first unidirectional switching device connected in parallel with the LC circuit and switching a current to induce LC resonance; and a second bidirectional switching device connected in series with the LC circuit and switching currents flowing in both forward and backward directions.Type: ApplicationFiled: December 24, 2015Publication date: December 14, 2017Applicant: HYOSUNG CORPORATIONInventors: Byung Choul KIM, Jung Ki HONG, Young Seong HAN