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公开(公告)号：US11908614B2
公开(公告)日：2024-02-20
申请号：US17474558
申请日：2021-09-14
发明人： Jin Gook Kim , Sang Yeong Jeong
CPC分类号： H01F27/427 , G01R19/16576 , H02M1/44 , H03F1/305 , H01F2017/0093 , H01F2017/065
摘要： This application relates to an active current compensation device which actively compensates for a noise occurring in a common mode in each of two or more high-current paths. In one aspect, the active current compensation device includes a sensing unit configured to generate an output signal corresponding to a common-mode noise current on each of the two or more high-current paths, and an amplification unit configured to amplify the output signal to generate an amplified current. The device may also include a compensation unit configured to generate a compensation current on the basis of the amplified current and allow the compensation current to flow to each of the two or more high-current paths, and a malfunction detection unit configured to detect a malfunction of the amplification unit. The malfunction detection unit and at least a portion of the amplification unit may be embedded in one integrated circuit (IC) chip.
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2.发明授权公开(公告)号：US11949393B2
公开(公告)日：2024-04-02
申请号：US17449038
申请日：2021-09-27
发明人： Sang Yeong Jeong , Jin Gook Kim
CPC分类号： H03H11/04 , H03H1/0007 , H03H11/126 , H05K1/14 , H05K2201/1006
摘要： This application relates to an independent active electromagnetic interference filter module. In one aspect, the filter module includes a first element group including a noise sensing unit provided to sense electromagnetic noise, and a second element group including a compensating unit provided to generate a compensation signal for the electromagnetic noise. The first group and the second group may be respectively mounted on different substrates. According to some embodiments, the filter module can reduce a volume of each element constituting an electromagnetic interference filter module, implement a single modularization of a compact structure. The filter module can also improve electromagnetic interference noise reduction performance and a manufacturing method thereof.
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公开(公告)号：US12095433B2
公开(公告)日：2024-09-17
申请号：US17087340
申请日：2020-11-02
发明人： Jin Gook Kim , Sang Yeong Jeong , Dong Il Shin
CPC分类号： H03H11/04 , H01F17/04 , H01F2017/0093
摘要： The present disclosure relates to an electromagnetic interference (EMI) filter for preventing noise emitted from a power line cable, and an isolated type active EMI filter having no additional elements on a power line. The EMI filter includes a common-mode (CM) choke disposed on a power source side, a Y-cap disposed on an EMI source side, and a sensing winding configured to sense a current. The EMI filter also includes an amplifier configured to amplify the noise current, and a transformer configured to inject a signal of the secondary coil into the Y-cap as a compensation signal.
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公开(公告)号：US11901832B2
公开(公告)日：2024-02-13
申请号：US17450361
申请日：2021-10-08
发明人： Sang Yeong Jeong , Jin Gook Kim
摘要： This application relates to an active compensating device. In one aspect, the active compensating device includes two or more high current paths through which a second current supplied by a second device is transmitted to a first device, and a sensing unit sensing the first current on the high current paths and generating an output signal corresponding to the first current. The device may also include an amplifying unit amplifying the output signal of the sensing unit to generate an amplified current and a compensating unit generating a compensation current based on the amplified current and allowing the compensation current to flow to each of the two or more high current paths. The device may further include a first anti-disturbance unit connected in parallel to output terminals of the sensing unit, and a second anti-disturbance unit connected in parallel to input terminals of the compensating unit.
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