公开(公告)号：US09837809B2

公开(公告)日：2017-12-05

申请号：US15165233

申请日：2016-05-26

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： Su Yong Chae ,  Seung Weon Yu ,  Jin Ju Park ,  Sea Shung Oh ,  Gyu Duk Kim ,  Suk In Park

IPC: H02H1/00 ,  G01R31/12

CPC classification number: H02H1/0015 ,  G01R31/1272

Abstract: The present provides an arc detection apparatus that includes: a current sensor configured to sense the first current that flows through the first line of a system in which the influence of noise according to the operation is detected in the first frequency band; a frequency data creator configured to digitally process sensed values of the first current in the first time period and the second time period, respectively, in order to thereby create the first frequency data and the second frequency data for the first frequency band; and an arc determination unit configured to determine the possibility of the generation of an arc of the system according to comparison data between the first frequency data and the second frequency data.

公开(公告)号：US09774254B2

公开(公告)日：2017-09-26

申请号：US14525846

申请日：2014-10-28

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： Su Yong Chae ,  Yu Jin Song ,  Sea Seung Oh ,  Yoon Dong Sung ,  Jin Ju Park

IPC: H02M3/157 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/157 ,  H02M3/1584 ,  H02M2001/0032 ,  Y02B70/16 ,  Y10T307/549

Abstract: Provided is a converter system including: a plurality of converter modules connected to one power source in parallel; and a controller for storing mapping information of first parameters corresponding to processing power of the converter modules and second parameters corresponding to the number of converter modules that optimally process the processing power among the converter modules, configuring a value of the first parameter according to a measurement value of power input into the converter modules or power output from the converter modules, calculating a value of the second parameter by substituting the value of the first parameter into the mapping information, selecting the number of converter modules corresponding to the value of the second parameters as active converter modules from the converter modules and processing the processing power by using the active converter modules, and controlling output power of the active converter module to gradually increase or decrease in a transient state where the value of the second parameter is changed.