WO2022255828A1 - 전자파 노이즈 데이터를 제공하는 능동형 보상 장치 - Google Patents
전자파 노이즈 데이터를 제공하는 능동형 보상 장치 Download PDFInfo
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- WO2022255828A1 WO2022255828A1 PCT/KR2022/007883 KR2022007883W WO2022255828A1 WO 2022255828 A1 WO2022255828 A1 WO 2022255828A1 KR 2022007883 W KR2022007883 W KR 2022007883W WO 2022255828 A1 WO2022255828 A1 WO 2022255828A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/123—Suppression of common mode voltage or current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
- H02M1/143—Arrangements for reducing ripples from dc input or output using compensating arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
- H02M1/15—Arrangements for reducing ripples from dc input or output using active elements
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/34—Analogue value compared with reference values
- H03M1/36—Analogue value compared with reference values simultaneously only, i.e. parallel type
- H03M1/361—Analogue value compared with reference values simultaneously only, i.e. parallel type having a separate comparator and reference value for each quantisation level, i.e. full flash converter type
- H03M1/362—Analogue value compared with reference values simultaneously only, i.e. parallel type having a separate comparator and reference value for each quantisation level, i.e. full flash converter type the reference values being generated by a resistive voltage divider
- H03M1/365—Analogue value compared with reference values simultaneously only, i.e. parallel type having a separate comparator and reference value for each quantisation level, i.e. full flash converter type the reference values being generated by a resistive voltage divider the voltage divider being a single resistor string
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Definitions
- Embodiments of the present invention relate to an active compensation device, which compensates for noise current and/or noise voltage generated in a common mode on two or more high current paths connecting two devices.
- noise may be emitted through a power line due to a switching operation of a power converter in an electronic device. If such noise is left unattended, it is not only harmful to the human body, but also causes malfunction or failure of peripheral parts and other electronic devices.
- electromagnetic interference that an electronic device has on other devices is called EMI (Electromagnetic Interference), and among them, noise transmitted via wires and board wiring is called Conducted Emission (CE) noise.
- EMI Electromagnetic Interference
- EMI noise emissions are strictly regulated in all electronic products. Accordingly, most electronic products necessarily include a noise reduction device (eg, an EMI filter) for reducing EMI noise current in order to satisfy regulations on noise emission. For example, in white goods such as air conditioners, electric vehicles, aviation, energy storage systems (ESS), etc., EMI filters are necessarily included.
- a conventional EMI filter uses a common mode choke (CM choke) to reduce common mode (CM) noise among conducted emission (CE) noise.
- CM common mode choke
- CE conducted emission
- the common mode (CM) choke is a passive filter that suppresses the common mode noise current.
- the present invention has been made to improve the above problems, and an object of the present invention is to provide an active compensation device capable of providing information on EMI noise as digital noise data.
- the IC unit includes one IC chip, and the one IC chip includes an input terminal for receiving the output signal of the sensing unit, a first output terminal for outputting the amplified signal, and the noise data. It may include second output terminals that output.
- the digital circuit unit analog-to-digital conversion unit; and an input buffer that receives the output signal and attenuates it into a low-voltage analog signal usable to the analog-to-digital converter.
- the IC unit may further include a voltage controlled oscillator for self-generating a clock signal for controlling an internal circuit of the analog-to-digital conversion unit.
- the IC unit may control the operation of the amplification unit based on the digital signal generated by the digital circuit unit or the noise data.
- the IC unit includes a first digital circuit unit that digitally converts the input signal of the amplification unit to generate first noise data, and a second digital circuit unit that digitally converts the output signal of the amplification unit to generate second noise data.
- a first digital circuit unit that digitally converts the input signal of the amplification unit to generate first noise data
- a second digital circuit unit that digitally converts the output signal of the amplification unit to generate second noise data.
- EMI noise data can be collected while canceling EMI noise using an active EMI filter.
- noise data may be extracted and collected from an active EMI filter and used for various purposes.
- noise data output from an active EMI filter according to an embodiment of the present invention may be monitored to monitor a state change or an emergency situation.
- noise data can be utilized in big data processing.
- FIG. 2 shows a more specific example of the embodiment shown in FIG. 1, and schematically illustrates an active compensation device 100A according to an embodiment of the present invention.
- FIG. 3 illustrates a specific example of the IC unit 500 according to various embodiments of the present invention.
- FIG. 4 illustrates input buffer 510-1 as an example of input buffer 510 in one embodiment.
- FIG 5 shows an input buffer 510-2 as another example of the input buffer 510 in one embodiment.
- FIG. 6 shows an example of an analog-to-digital conversion unit 520 in one embodiment.
- FIG. 7 shows a more specific example of the embodiment shown in FIG. 2, and schematically illustrates an active compensation device 100A-1 according to an embodiment of the present invention.
- FIG. 8 shows a more specific example of the embodiment shown in FIG. 1, and schematically illustrates an active compensation device 100B according to an embodiment of the present invention.
- FIG 9 schematically shows an active compensation device 100C according to another embodiment of the present invention.
- FIG 10 schematically shows an active compensation device 100D according to another embodiment of the present invention.
- An active compensation device for actively compensating for noise generated in a common mode in each of at least two high current paths 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 including an amplification unit that outputs an amplified signal amplified from the output signal and a digital circuit unit that outputs noise data digitally converted from 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 based on the amplification signal, and the noise data may be provided to an external device.
- the IC unit 500 may output an amplified voltage or amplified current to the compensation unit 140 as a compensation signal S1.
- the compensation signal (S1) is input to the compensation unit (140).
- Compensation unit 140 may generate a compensation voltage or compensation current based on the input compensation signal (amplification voltage or amplification current).
- the induced voltage V sen induced in the secondary side of the sensing transformer 120A may be input as an input signal to the IC unit 500 . That is, the input signal of the IC unit 500 may be a signal proportional to the noise current (I n ) or the noise voltage (V n ).
- the compensation transformer 140A may induce a compensation voltage V inj1 on the high current paths 111 and 112 of the secondary side 142 based on the amplified voltage generated in the primary side 141 .
- the IC unit 500 has an input terminal (VIN) for receiving the output signal of the sensing unit 120, a first output terminal (VOUT) for outputting the compensation signal (S1), and a first output terminal (VOUT) for outputting digital noise data (S2). It may include 2 output terminals (VOUT2).
- the sensing unit 120 may sense the noise signal I n or V n and generate an output signal corresponding to the noise signal. An output signal output from the sensing unit 120 becomes an input signal of the IC unit 500 .
- the amplifier 130 may amplify the analog input signal.
- the amplified analog signal may be output as a compensation signal S1 through the first output terminal VOUT.
- the compensating signal S1 output through the first output terminal VOUT may be input to the compensating unit 140 described above. Meanwhile, since the compensation signal S1 should be sufficiently large, the output voltage of the amplifier 130 may be designed to correspond to about 12V, but the present invention is not limited thereto.
- a noise signal input to the input buffer 510 of the digital circuit unit 501 may have a high voltage swing of 10V or more. Therefore, for example, the input buffer 510 may be a high-swing DMOS having sufficient breakdown voltage and performance.
- the input buffer 510-1 may be composed of multi-stage amplifiers, and in another embodiment, as shown in FIG. 5, the input buffer 510-2 may be a one-stage inverting amplifier. ) may consist of
- the digital block 522 may be a component that processes the digital signal output from the converter circuit 521 to minimize defects in the digital noise data S2.
- the signal output from the digital block 522 may be output through the output buffer 523 as digital noise data S2 representing noise in binary code format.
- the noise data S2 may be output as a 5-bit signal, but is not limited thereto. Depending on the embodiment, it may be output as an 8-bit to 10-bit signal, and others are possible.
- the noise data S2 may be output to the outside of the active compensation device 100 through the second output terminals VOUT2.
- the second output terminals VOUT2 may be connected to external devices such as data storage or a waveform display device.
- Noise data S2 output to the outside of the active compensation device 100 may be monitored to monitor a state change or an emergency situation.
- Noise data (S2) may be used for big data processing or artificial intelligence technology.
- the target input voltage level of the analog-to-digital converter 520 may be designed to correspond to 0.3V to 1.3V, and the switching frequency may be designed to correspond to about 800Mhz.
- the present invention is not limited thereto.
- V REFN may correspond to 0.3V
- V REFP may correspond to 1.3V in FIG. 6 .
- VDDA may be designed to correspond to about 1.8V, but is not limited thereto.
- the linear regulator 550 may generate DC low voltage for driving internal circuits of the IC unit 500, such as the ADC 520 and the VCO 560.
- the linear regulator 550 receives an input voltage of about 12V from the outside (eg, the third device 400) through terminals VSS and VDD of the IC unit 500 and outputs a DC low voltage of about 1.8V. can do.
- the DC low voltage may be used to drive internal circuits of the IC unit 500, such as the ADC 520 and the VCO 560.
- the IC unit 500 may further include a control circuit for controlling the amplification unit 130 based on a digital signal or noise data S2.
- the control circuit may be connected to the amplifier 130 from an output terminal of the converter circuit 521, the digital block 522, or the output buffer 523, for example.
- FIG. 7 shows a more specific example of the embodiment shown in FIG. 2, and schematically illustrates an active compensation device 100A-1 according to an embodiment of the present invention.
- the third device 400 and the reference potential 602 of the IC unit 500 are omitted.
- the active compensation device 100A-1 senses the noise current I n input in common mode to each of the two large current paths 111 and 112 connected to the first device 300 and actively compensates for it with the compensation voltage V inj1 . can do.
- the sensing unit 120A-1 may be, for example, a sensing transformer in which a secondary wire is wound around a CM choke around which power lines corresponding to the high current paths 111 and 112 are wound.
- the secondary wire may be connected to the input terminal VIN of the IC unit 500 .
- the sensing unit 120A-1 when the sensing unit 120A-1 is formed using the CM choke, the sensing unit 120A-1 may function as a passive filter as a CM choke, as well as performing functions of sensing and transforming. That is, the sensing transformer formed by additionally winding the secondary-side wire around the CM choke can simultaneously sense and transform the noise current I n and suppress or block the noise current I n .
- the noise data S2 may be stored and utilized in a data storage external to the active compensation device 100A-1.
- the compensation signal S1 may correspond to the input voltage of the compensation transformer 140A-1.
- the compensation transformer 140A-1 may induce a compensation voltage V inj1 in series on the secondary side high current paths 111 and 112 based on the input voltage applied to the primary side.
- the compensation voltage V inj1 generated in series on the high current paths 111 and 112 may have an effect of suppressing the noise current I n flowing on the high current paths 111 and 112 .
- the active compensation device 100B may sense the noise current I n input in a common mode to each of the two high current paths connected to the first device 300 and actively compensate it with the compensation current I inj .
- An output signal of the sensing unit 120B may be proportional to the size of the noise current I n .
- the noise data S2 may be stored and utilized in a data storage external to the active compensation device 100B.
- the compensating signal S1 may be input to the compensating unit 140B.
- the compensation unit 140B may include a compensation transformer and a compensation capacitor unit.
- the compensation capacitor unit may include two Y-capacitors (Y-caps) having one end connected to the secondary side of the compensation transformer and the other end connected to the high current path.
- Y-caps Y-capacitors
- Such an active compensation device 100B is an example of a feedforward current sensing current compensating (CSCC) type that senses the noise current In and compensates for it with the compensation current I inj at the front end of the power supply side.
- CSCC feedforward current sensing current compensating
- FIG. 9 schematically shows an active compensation device 100C according to another embodiment of the present invention.
- the third device 400 and the reference potential 602 of the IC unit 500 are omitted.
- the active compensation device 100C may include a sensing unit 120C, an IC unit 500, and a compensation unit 140C.
- the compensation unit 140C may include a compensation transformer and a compensation capacitor unit.
- the sensing unit 120C corresponds to the sensing unit 120A-1 described in FIG. 7
- the IC unit 500 corresponds to the IC unit 500 described in various embodiments
- the compensating unit 140C corresponds to the IC unit 500 described in FIG. Since it corresponds to the described compensation unit 140B, a detailed description thereof will be omitted.
- Such an active compensator 100C is an example of a feedback CSCC (current sensing current compensating) type that compensates for the sensed noise current I n with the compensating current I inj2 at a later stage.
- CSCC current sensing current compensating
- FIG. 10 schematically shows an active compensation device 100D according to another embodiment of the present invention.
- the third device 400 and the reference potential 602 of the IC unit 500 are omitted.
- the active compensation device 100D senses the noise current I n input in a common mode to each of the two high current paths connected to the first device 300 and collectively compensates it with the compensation voltage V inj1 and the compensation current I inj2 .
- the active compensation device 100D may include a sensing unit 120D, an IC unit 500', a first compensating unit 140D-1 and a second compensating unit 140D-2.
- the second compensation unit 140D-2 may include a compensation transformer and a compensation capacitor unit.
- the sensing unit 120D corresponds to the sensing unit 120A-1 described in FIG. 7, the first compensating unit 140D-1 corresponds to the compensating transformer 140A-1 described in FIG. 7, and the second compensating unit Since 140D-2 corresponds to the compensation unit 140B described in FIG. 8, a detailed description thereof is omitted.
- An output signal (eg, V sen ) of the sensing unit 120D may be input to the IC unit 500'.
- the IC unit 500' generates noise data S2 by converting and processing the output signal (eg, V sen ) into a digital signal, and generates noise data S2 based on the output signal (eg, V sen ).
- a first compensation signal S1-1 and a second compensation signal S1-2 may be output.
- the IC unit 500' includes a first amplifier 130-1 that amplifies an input signal (eg, V sen ) and outputs a first compensation signal S1-1, and an input signal (eg, V sen ). It may include a second amplifier 130-2 that amplifies V sen and outputs the second compensation signal S1-2.
- the IC unit 500' controls the operation of the first amplifier 130-1 and/or the second amplifier 130-2 based on the digital signal or noise data S2. can do.
- the IC unit 500' including the first amplifier 130-1, the second amplifier 130-2, and the digital circuit unit 301 may be physically a single IC chip.
- the IC unit 500' provides a 1-1 output terminal for outputting the first compensation signal S1-1 to the first compensation unit 140D-1 and a second compensation signal S1-2.
- a first-second output terminal for outputting to the second compensator 140D-2 may be provided.
- the present invention is not limited thereto.
- the first compensating signal S1-1 output from the IC unit 500' may correspond to the input voltage of the first compensating unit 140D-1.
- the first compensating unit 140D-1 may be a compensation transformer that induces a compensation voltage V inj1 in series on a secondary side high current path based on the input voltage applied to the primary side.
- the compensation voltage V inj1 generated in series on the high current path can have an effect of suppressing the noise current I n flowing on the high current path.
- the first compensating unit 140D-1 may be disposed in front of the sensing unit 120D, and the second compensating unit 140D-2 may be disposed behind the sensing unit 120D.
- the first compensator 140D-1 may perform voltage compensation
- the second compensator 140D-2 may perform current compensation. According to this embodiment, it is possible to simultaneously compensate for common mode voltage and current, effectively reducing noise.
- FIG. 11 shows a more specific example of the embodiment shown in FIG. 1, and schematically illustrates an active compensation device 100E according to an embodiment of the present invention.
- the active compensating device 100E is only different from the active compensating device 100A-1 shown in FIG. 8 except for the IC unit 500′′, and the rest of the configuration corresponds to the active compensating device 100A-1, so explanation is given. omit
- the IC unit 500′′ may include an amplifier 130, a first digital circuit unit 501-1, and a second digital circuit unit 501-2. .
- the first digital circuit unit 501-1 is based on the same input signal as the input signal of the amplifier 130 (ie, the input signal of the IC unit 500'').
- the first digital noise data S2-1 may be output.
- the second digital circuit unit 501-2 may output second digital noise data S2-1 based on the output signal of the amplification unit 130.
- the output terminal of the amplifier 130 in the IC unit 500'' may be connected to the input terminal of the second digital circuit unit 501-2.
- noise data may be extracted and collected from an active compensation device and used for various purposes.
- noise data output from an active compensation device according to an embodiment of the present invention may be monitored to monitor a state change or an emergency situation.
- noise data can be utilized in big data processing.
- Embodiments of the present invention may be used in electronic devices such as home appliances, industrial electric appliances, electric vehicles, aviation, and energy storage systems.
- industrial applicability according to one embodiment of the present invention is not limited to the above.
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Abstract
Description
Claims (6)
- 적어도 둘 이상의 대전류 경로 각각에 공통 모드로 발생하는 노이즈를 능동적으로 보상하는 능동형 보상 장치에 있어서,상기 대전류 경로 상의 공통 모드 노이즈 신호에 대응하는 출력 신호를 생성하는 센싱부;상기 출력 신호로부터 증폭된 증폭 신호를 출력하는 증폭부와 상기 출력 신호로부터 디지털 변환된 노이즈 데이터를 출력하는 디지털 회로부를 포함하는 IC부; 및상기 증폭 신호에 기초하여 상기 대전류 경로로부터 보상 전류를 인출시키거나 상기 대전류 경로 상에 보상 전압을 발생시키는 보상부;를 포함하고,상기 노이즈 데이터는 외부 장치로 제공되는, 능동형 보상 장치.
- 제1항에 있어서,상기 IC부는 하나의 IC 칩으로 이루어지며,상기 하나의 IC 칩은,상기 센싱부의 출력 신호를 입력 받는 입력 단자, 상기 증폭 신호를 출력하는 제1 출력 단자, 및 상기 노이즈 데이터를 출력하는 제2 출력 단자들을 포함하는,능동형 보상 장치.
- 제1항에 있어서,상기 디지털 회로부는,아날로그 디지털 변환부; 및상기 출력 신호를 입력 받아, 상기 아날로그 디지털 변환부에 사용 가능한 저전압 아날로그 신호로 감쇠시키는 입력 버퍼;를 포함하는,능동형 보상 장치.
- 제3항에 있어서,상기 IC부는,상기 아날로그 디지털 변환부의 내부 회로를 제어하기 위한 클락 신호를 자체적으로 생성하기 위한 전압 제어 발진기를 더 포함하는,능동형 보상 장치.
- 제1항에 있어서,상기 IC부는,상기 디지털 회로부에서 생성된 디지털 신호 또는 상기 노이즈 데이터에 기초하여 상기 증폭부의 동작을 제어하는,능동형 보상 장치.
- 제1항에 있어서,상기 IC부는,상기 증폭부의 입력 신호를 디지털 변환하여 제1 노이즈 데이터를 생성하는 제1 디지털 회로부와, 상기 증폭부의 출력 신호를 디지털 변환하여 제2 노이즈 데이터를 생성하는 제2 디지털 회로부를 포함하는,능동형 보상 장치.
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JP2023551793A JP2024509106A (ja) | 2021-06-04 | 2022-06-03 | 電磁波ノイズデータを提供するアクティブ補償装置 |
CN202280018245.XA CN117015925A (zh) | 2021-06-04 | 2022-06-03 | 提供电磁波噪声数据的有源型补偿装置 |
US18/548,347 US20240146186A1 (en) | 2021-06-04 | 2022-06-03 | Active compensation device providing electromagnetic wave noise data |
EP22816487.7A EP4280440A1 (en) | 2021-06-04 | 2022-06-03 | Active compensation device providing electromagnetic wave noise data |
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KR10-2021-0073037 | 2021-06-04 | ||
KR10-2021-0129812 | 2021-09-30 | ||
KR1020210129812A KR102636803B1 (ko) | 2021-06-04 | 2021-09-30 | 전자파 노이즈 데이터를 제공하는 능동형 보상 장치 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010057268A (ja) * | 2008-08-28 | 2010-03-11 | Fuji Electric Systems Co Ltd | 伝導性ノイズフィルタ |
JP2018157747A (ja) * | 2017-03-17 | 2018-10-04 | シャフナー・エーエムファウ・アクチェンゲゼルシャフト | アクティブフィルタ |
KR20190096689A (ko) * | 2018-02-09 | 2019-08-20 | 엘지전자 주식회사 | Emi 노이즈 저감을 위한 액티브 노이즈 필터 |
WO2020179064A1 (ja) * | 2019-03-07 | 2020-09-10 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
US20200321857A1 (en) * | 2017-05-08 | 2020-10-08 | Samsung Electronics Co., Ltd. | Conductive noise suppressor, power converter, and motor device |
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2022
- 2022-06-03 EP EP22816487.7A patent/EP4280440A1/en active Pending
- 2022-06-03 US US18/548,347 patent/US20240146186A1/en active Pending
- 2022-06-03 JP JP2023551793A patent/JP2024509106A/ja active Pending
- 2022-06-03 WO PCT/KR2022/007883 patent/WO2022255828A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010057268A (ja) * | 2008-08-28 | 2010-03-11 | Fuji Electric Systems Co Ltd | 伝導性ノイズフィルタ |
JP2018157747A (ja) * | 2017-03-17 | 2018-10-04 | シャフナー・エーエムファウ・アクチェンゲゼルシャフト | アクティブフィルタ |
US20200321857A1 (en) * | 2017-05-08 | 2020-10-08 | Samsung Electronics Co., Ltd. | Conductive noise suppressor, power converter, and motor device |
KR20190096689A (ko) * | 2018-02-09 | 2019-08-20 | 엘지전자 주식회사 | Emi 노이즈 저감을 위한 액티브 노이즈 필터 |
WO2020179064A1 (ja) * | 2019-03-07 | 2020-09-10 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
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JP2024509106A (ja) | 2024-02-29 |
EP4280440A1 (en) | 2023-11-22 |
US20240146186A1 (en) | 2024-05-02 |
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