Proposed are 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.
H01F 17/04 - Fixed inductances of the signal type with magnetic core
2.
EMBEDDED NOISE MANAGEMENT DEVICE FOR MANAGING NOISE CAUSED BY RADIATED ELECTROMAGNETIC WAVES, ELECTRONIC SYSTEM INCLUDING SAME, AND NOISE MANAGEMENT SYSTEM USING EMBEDDED NOISE MANAGEMENT DEVICE
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Jeong, Sang Yeong
Abstract
Embodiments of the present disclosure provide an embedded noise management device for managing noise caused by radiated electromagnetic waves. The embedded noise management device comprises: a noise sampling circuit configured to detect and sample a noise signal corresponding to the radiated electromagnetic waves in real time, convert the sampled noise signal into digital data, and then sequentially store the digital data through a data shift operation; an event detection circuit configured to determine an event when a noise signal exceeding a threshold value is detected, and stop the data shift operation of the noise sampling circuit; and a noise waveform restoration circuit configured to sequentially read the digital data corresponding to time before and after occurrence of the event, the digital data being stored in the noise sampling circuit, so as to generate restoration data for restoring the digital data into an analog noise waveform.
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Kim, Jin Gook
Jeong, Sang Yeong
Kwon, Jeong Bin
Abstract
An active compensation device including a first element group including an integrated sensing/compensation unit configured to generate a sensing signal corresponding to at least one of common-mode noise and differential-mode noise on at least two high-current paths, and a second element group including a compensation control unit including a negative impedance converter and configured to generate a compensation signal corresponding to the sensing signal and provide the compensation signal to the integrated sensing/compensation unit. The compensation control unit further including a stabilization unit configured to prevent oscillation caused by the sensed noise. The first element group and the second element group are mounted on a single substrate.
H03H 1/00 - Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
H03H 7/42 - Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
H05K 1/14 - Structural association of two or more printed circuits
4.
ACTIVE COMPENSATION DEVICE PROVIDING ELECTROMAGNETIC WAVE NOISE DATA
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Kim, Jin Gook
Jeong, Sang Yeong
Abstract
An active compensation device is provided. An active compensation device includes an integrated sensing/compensation unit configured to generate a sensing signal corresponding to at least one of common-mode noise and differential-mode noise on at least two high-current paths, and a compensation control unit including a negative impedance converter and configured to generate a compensation signal corresponding to the sensing signal and provide the compensation signal to the integrated sensing/compensation unit. The compensation control unit further includes a stabilization unit configured to prevent oscillation caused by the sensed noise.
Disclosed is an active EMI filter for actively compensating for noise generated in a common mode and a differential mode in each of at least two high current paths, wherein the active EMI filter includes: a sensing unit for sensing the noise in the common mode and the differential mode on the high current paths; and a compensation unit that includes a negative impedance transformer, generates a compensation signal corresponding to the sensed noise, and provides the compensation signal to the sensing unit.
According to an embodiment of the present invention, provided is a radioactive noise reduction device for compensating for electromagnetic interference generated by a radioactive source, the radioactive noise reduction device comprising: a compensation unit which includes a compensation loop through which all or a portion of radioactive noise emitted from the source passes; and a circuit unit which is connected to the compensation unit and includes one or more inductors and one or more amplification units. As an impedance of the circuit unit, an input impedance (Zin) viewed from the compensation unit is a value obtained by negatively converting the impedance of the compensation unit.
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.
H02M 5/293 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/32 - Means for protecting converters other than by automatic disconnection
An active voltage compensation device which actively compensates for noise occurring in each of two or more high-current paths in a common mode, the active voltage compensation device includes a sensing unit to sense a noise current in the common mode in the two or more high-current paths to generate an output signal corresponding to the noise current, an amplification unit to amplify the output signal of the sensing unit to generate an amplified signal, an amplified signal feedback unit to transmit a feedback signal corresponding to the amplified signal of the amplification unit back to the amplification unit, and a compensation unit to generate a compensation voltage on the two or more high-current paths based on an output voltage corresponding to the amplified signal.
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.
H01F 27/42 - Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors or choke coils
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Jeong, Sang Yeong
Kim, Jin Gook
Abstract
Provided is a current compensation system for solar generators for compensating for noise using an active electromagnetic interference (EMI) filter. An inverting system for solar generators includes a solar inverter converting DC voltage to AC voltage, an EMI filter unit including an active EMI filter to reduce noise corresponding to the AC voltage, a power grid, and at least two or more through lines passing a second current from the power grid to the solar inverter and passing through the EMI filter unit, wherein the active EMI filter includes a noise sensing unit sensing a first current on the at least two or more through lines and generating an output signal corresponding to the first current, an active circuit unit amplifying the output signal to generate an amplified signal, a compensation unit generating a compensation current based on the amplified signal, and a transmission unit providing a path through which the compensation current flows to each of the at least two large current paths.
The present disclosure provides an active compensation device for actively compensating for noise generated in a common mode in each of at least two high-current paths. The active compensation device includes: a sensing unit configured to generate an output signal corresponding to a common-mode noise signal on the high-current path, an IC unit that receives the output signal and converts the same into a digital signal, generates noise data and an amplified signal at least based on the digital signal, and outputs the noise data and the amplified signal, and a compensation unit that draws a compensation current from the high current path or generates a compensation voltage on the high current path, based on the amplified signal. The noise data is provided to an external device.
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.
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.
H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
H01F 27/42 - Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors or choke coils
H03F 1/30 - Modifications of amplifiers to reduce influence of variations of temperature or supply voltage
UNIST( ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Kim, Jin Gook
Jeong, Sang Yeong
Abstract
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.
H02M 1/12 - Arrangements for reducing harmonics from AC input or output
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 5/293 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
15.
Divided active electromagnetic interference filter module and manufacturing method thereof
UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Kim, Jin Gook
Jeong, Sang Yeong
Abstract
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.
H03H 1/00 - Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
H03H 7/42 - Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
H05K 1/14 - Structural association of two or more printed circuits
16.
Active compensation device providing electromagnetic wave noise data
The present disclosure provides an active compensation device for actively compensating for noise generated in a common mode in each of at least two high-current paths. The active compensation device includes a sensing unit configured to generate an output signal corresponding to a common-mode noise signal on the high-current path, an integrated circuit (IC) unit including an amplification unit configured to output an amplified signal obtained by amplifying the output signal, and a digital circuit unit configured to output noise data into which the output signal is digitally converted, and a compensation unit configured to draw a compensation current out of the high-current path or generate a compensation voltage on the high-current path, based on the amplified signal. The noise data is provided to an external device.
UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Jeong, Sang Yeong
Kim, Jin Gook
Abstract
Provided is a current compensation system for solar generators for compensating for noise using an active electromagnetic interference (EMI) filter. An inverting system for solar generators includes a solar inverter converting DC voltage to AC voltage, an EMI filter unit including an active EMI filter to reduce noise corresponding to the AC voltage, a power grid, and at least two or more through lines passing a second current from the power grid to the solar inverter and passing through the EMI filter unit, wherein the active EMI filter includes a noise sensing unit sensing a first current on the at least two or more through lines and generating an output signal corresponding to the first current, an active circuit unit amplifying the output signal to generate an amplified signal, a compensation unit generating a compensation current based on the amplified signal, and a transmission unit providing a path through which the compensation current flows to each of the at least two large current paths.
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Kim, Jin Gook
Jeong, Sang Yeong
Abstract
The present invention provides an active voltage compensation device which actively compensates for common mode noise generated on each of at least two high current paths. The active voltage compensation device comprises: a sensing unit which senses a common mode noise current on high current paths to generate an output signal corresponding to the noise current; an amplification unit which amplifies the output signal of the sensing unit to generate an amplification signal; an amplification signal feedback unit which transfers a feedback signal corresponding to the amplification signal of the amplification unit back to the amplification unit; and a compensation unit which generates a compensation voltage on the high current paths on the basis of an output voltage corresponding to the amplification signal.
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Kim, Jin Gook
Jeong, Sang Yeong
Abstract
The present invention provides an active compensation device for actively compensating for noise generated in a common mode on each of at least two high current paths. The active compensation device comprises: a sensing unit for generating an output signal corresponding to a common mode noise signal on the high current path; an IC unit, which receives the output signal and converts same into a digital signal, generates each of noise data and an amplification signal on the basis of at least the digital signal, and outputs the noise data and the amplification signal; and a compensation unit for withdrawing compensation current from the high current path or generating compensation voltage on the high current path on the basis of the amplification signal. The noise data are provided to an external device.
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Kim, Jin Gook
Jeong, Sang Yeong
Abstract
The present invention provides an active compensation device that actively compensates for noise generated in a common mode on each of at least two high current paths. The active compensation device comprises: a sensing unit that generates an output signal corresponding to a common-mode noise signal on the high current path; an IC unit comprising an amplification part that outputs an amplification signal obtained by amplifying the output signal, and a digital circuit part that outputs noise data obtained by digitally converting the output signal; and a compensation unit that draws a compensation current from the high current path or generates a compensation voltage on the high current path on the basis of the amplification signal. The noise data is provided to an external device.
UNIST( ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Kim, Jin Gook
Jeong, Sang Yeong
Abstract
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.
H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
H01F 27/42 - Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors or choke coils
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
H03F 1/30 - Modifications of amplifiers to reduce influence of variations of temperature or supply voltage
UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Jeong, Sang Yeong
Kim, Jin Gook
Abstract
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.
H02M 1/12 - Arrangements for reducing harmonics from AC input or output
H02M 5/293 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/32 - Means for protecting converters other than by automatic disconnection
23.
Divided active electromagnetic interference filter module and manufacturing method thereof
UNIST (ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Jeong, Sang Yeong
Kim, Jin Gook
Abstract
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.
H03H 1/00 - Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
H03H 11/04 - Frequency selective two-port networks
H03H 11/12 - Frequency selective two-port networks using amplifiers with feedback
H05K 1/14 - Structural association of two or more printed circuits
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Jeong, Sang Yeong
Kim, Jin Gook
Abstract
A plasma ionizer according to embodiments of the present invention enables easy use and design of an electrode and can significantly improve the performance of static charge elimination by using a slot electrode and various configurations thereof. In addition, it is possible to implement a plasma ionizer capable of igniting plasma without inert gases through various methods, for example, methods using additional stimulation or materials.
UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY) (Republic of Korea)
Inventor
Jeong, Sang Yeong
Kim, Jin Gook
Abstract
The present invention relates to a current compensation system for a photovoltaic generator, which compensates for noise using an active EMI filter. An inverting system for photovoltaic generation comprises: a photovoltaic invertor for inverting a DC voltage into an AC voltage; an EMI filter unit comprising an active EMI filter for reducing noise corresponding to an AC voltage; a power grid; and at least two or more through lines which convey a second current from the power grid to the photovoltaic inverter, and pass through the EMI filter unit, wherein the active EMI filter comprises: a noise sensing unit for sensing a first current on the at least two or more through lines so as to generate an output signal corresponding to the first current; an active circuit unit for amplifying an output signal so as to generate an amplified signal; a compensation unit for generating a compensation current on the basis of the amplified signal; and a transmission unit for providing a path through which the compensation current flows in each of at least two or more large current paths.
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.
09 - Scientific and electric apparatus and instruments
Goods & Services
EMC (Electro Magnetic Compatibility) chips; capacitors for
blocking EMI (Electro Magnetic Interference); capacitors as
semiconductor elements for blocking electromagnetic
interference; noise filters for electronic circuits; ceramic
filters for electronic circuits; laminated filters for
electronic circuits; electromagnetic shield films for
electronic circuits; chips (integrated circuits) for
anti-static for filters; complex chips (integrated circuits)
comprised of filter and capacitor.
09 - Scientific and electric apparatus and instruments
Goods & Services
EMC (Electro Magnetic Compatibility) microchips; capacitors for blocking EMI (Electro Magnetic Interference); capacitors as semiconductor elements for blocking electromagnetic interference; electronic noise filters for electronic circuits; electronic ceramic filters for electronic circuits; electronic laminated filters for electronic circuits; electromagnetic protective shield films for electronic circuits; integrated circuit chips for anti-static for filters; integrated circuit complex chips comprised of filter and capacitor
