WO2006079226A1 - Verfahren und vorrichtung zum betrieb einer umrichterschaltung mit einem lcl-filter - Google Patents
Verfahren und vorrichtung zum betrieb einer umrichterschaltung mit einem lcl-filter Download PDFInfo
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- WO2006079226A1 WO2006079226A1 PCT/CH2005/000293 CH2005000293W WO2006079226A1 WO 2006079226 A1 WO2006079226 A1 WO 2006079226A1 CH 2005000293 W CH2005000293 W CH 2005000293W WO 2006079226 A1 WO2006079226 A1 WO 2006079226A1
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- voltages
- filter output
- currents
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Classifications
-
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal 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
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal 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, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- 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
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
Definitions
- the invention relates to the field of power electronics. It is based on a method for Berieb a converter circuit and apparatus for performing the method according to the preamble of the independent claims.
- Conventional converter circuits comprise a converter unit with a plurality of controllable power semiconductor switches, which are connected in a known manner for switching at least two switching voltage levels.
- An LCL filter is connected to each phase connection of the inverter unit.
- a ka ⁇ pazitiver energy store is also connected, which is commonly formed by one or more capacitors.
- ⁇ see having a control device for generating reference voltages via a driving circuit for forming a control signal from Referenzspan- tions is connected to the controllable power semiconductor switches. By means of the drive signal thus the power semiconductor switches are driven.
- LCL filters cause a permanent distortion, i. can cause unwanted oscillations in the filter output currents and filter output voltages due to resonant oscillations of the LCL filters.
- an electrical alternating voltage network typically connected to the filter outputs or in the case of an electrical load connected to the filter outputs, such distortions can lead to damage or even destruction and are therefore highly undesirable.
- the object of the invention is therefore to provide a method for operating a converter circuit, by means of which distortions in the filter output currents and filter output voltages caused by LCL filters connected to the converter circuit can be actively damped. Furthermore, it is the object of the invention to provide a device with which the method can be carried out in a particularly simple manner.
- the converter circuit has a converter unit having a multiplicity of drivable Leis ⁇ processing semiconductor switches and a connected to each phase connection of the converter LCL-filter.
- the controllable power semiconductor switches are now controlled by means of a drive signal formed from reference voltages.
- the reference voltages are formed from the subtraction of attenuation voltages from reference phase terminal voltages, wherein the attenuation voltages are formed from filter capacitance currents of the LCL filters which are weighted with an adjustable attenuation factor.
- the attenuation voltages are thus proportional to the filter capacitance currents, which attenuation voltages are then subtracted from the reference phase terminal voltages, resulting in the connection of a damping resistor to each phase terminal of the Converter unit comes right away.
- distortions, ie unwanted vibrations, in the filter output currents and filter output voltages can thus be actively damped, so that these distortions are greatly reduced and, at best, suppressed as far as possible.
- a further advantage of the method according to the invention is that no discrete, space-consuming, costly realized and therefore more expensive damping resistor has to be connected to the respective phase connection in order to be able to effectively dampen the undesired distortions.
- the device according to the invention for carrying out the method for operating the converter circuit has a regulation device serving to generate reference voltages, which is connected to the controllable power semiconductor switches via a drive circuit for forming a drive signal.
- the control device comprises a first calculation unit for forming reference voltages from the subtraction of attenuation voltages of reference phase terminal voltages, the calculation unit being supplied with reference phase terminal voltages and filter capacitance currents being supplied to the LCL filters for forming the attenuation voltages.
- the regulating device has a regulator unit for generating the reference phase terminal voltages.
- the inventive device for carrying out the method for operating the converter circuit is thus very simple and inexpensive to implement, since the circuit complexity can be kept extremely low and also only a small number of components An ⁇ is required for the structure.
- the inventive method is thus particularly simple to carry out.
- Fig. 3 shows a time course of the filter output currents with active damping according to the inventive method
- FIG. 4 shows a time profile of the filter output currents with active damping and additional active reduction of harmonics according to the method according to the invention.
- FIG. 1 shows an embodiment of a device according to the invention for carrying out the method according to the invention for operating a converter circuit.
- the converter circuit has a converter unit 1 with a plurality of controllable power semiconductor switches and an LCL filter 3 connected to each phase connection 2 of the converter unit 1.
- each LCL filter 3 has a first filter inductance U, a second filter inductance L (g and a filter capacitance C 1 , wherein the first filter inductance U with the associated phase connection 2 of the converter unit 1, with the second filter inductance U, and with the filter capacitance C f is connected Further, the filter capacitances Ci of the individual LCL filters 3 connected Typically, each LCL filters 3 a nearly negligible filter resistance R
- the inverter unit 1 is exemplified three phased executed. It should be mentioned that the converter unit 1 can generally be embodied as any converter unit 1 for switching> 2 switching voltage levels (multi-level converter circuit) with respect to the voltage of a capacitive energy store 9 connected to the converter unit 1, in which case the capacitive energy store 9 is formed by any number of capacities, which capacities are then connected to the corresponding executed executed Operaumrichterscnies.
- the controllable power semiconductor switches of the converter unit 1 are now controlled by means of a drive signal S formed from reference voltages u * , u * 2 , u * 3 .
- a drive signal S formed from reference voltages u * , u * 2 , u * 3 .
- an assignment table look-up table
- reference voltage values corresponding drive signals are permanently assigned, or a modulator based on the pulse width modulation.
- the reference voltages u * t, u * 2 , u * 3 are formed from the subtraction of attenuation voltages u d1 , u d2 , u d3 from reference phase terminal voltages u * n , u * l2 , u * l3 , the attenuation voltages U d i, u d2 , u d3 off with an adjustable damping factor K
- weighted filter capacitance currents ic ⁇ , ici 2 , ico the LCL filter 3 are formed, which illustrates in particular the following formula.
- the damping voltages u d1 , u d2 , u d3 are thus proportional to the filter capacitance currents icn > ici 2> ico. which attenuation voltages u d1 , u d2 , u d3 are then subtracted from the reference phase terminal voltages u * n, u * , 2 , u * l3 , which corresponds to the connection of a damping resistor to each phase connection 2 of the converter unit 1.
- the damping factor Ki is set so that the unwanted oscillations of the filter output voltages u g1 , u g2 , u g3 or of phase terminal voltages, in particular harmonics, are just not amplified.
- the device according to the invention for carrying out the method according to the invention for operating a converter circuit for this purpose has a control device 4 serving to generate the reference voltages u * i, u * 2 , u * 3 , which via a drive circuit 5 for forming the drive signal S is connected to the controllable power semiconductor switches.
- the drive circuit 5 comprises, for example, a look-up table, in which reference voltage values corresponding drive signals are permanently assigned, or a modulator, which is based on the pulse width modulation.
- the control device 4 comprises a first calculation unit 6 for forming the reference voltages u * i, u * 2 , u * 3 from the subtraction of damping voltages u d1 , u d2 , u d3 of reference phase terminal voltages u * ⁇ , u * i2 , u * i3 , the first calculation unit 6 being supplied with the reference phase terminal voltages u * n, u * i2 , u * i3 and the LCL filter 3 for forming the damping voltages u d , u d2 , u d3 filter capacitance currents icn, te, icra.
- the filter capacitance currents i C n, ici 2 . icra are, as shown in Fig. 1, measured by appropriate measuring devices.
- the control device 4 comprises a regulator unit 7 for generating the reference phase terminal voltages U * M , u * i2 , u * i3 .
- the inventive device for carrying out the method for operating the converter circuit is therefore very easy and inexpensive to implement, since the circuit complexity can be kept extremely low and further only a small number of components for the structure is needed. By means of this device, the inventive method is thus particularly simple to carry out.
- the filter capacitance currents ic ⁇ . ici 2 . icra be filtered by means of a high-pass filter.
- the damping voltages u d i, u d2 , u d3 are formed only from harmonics of the filter capacitance currents ic ⁇ , ici 2 , icra, in particular higher-frequency harmonics of the filter capacitance currents i C ⁇ , ici 2 , icra, and the adjustable damping factor Ki, so that the inventive active damping advantageous only to the harmonics in the filter output currents i fg1 , i fg2l i
- a high-pass filter is provided which is connected between the measuring devices for measuring the filter Capacitance currents i C ⁇ , ic ( 2. ici 3 and the first calculation unit 6 is turned on, wherein the high-pass filter in Fig. 1 for the sake of clarity is not shown.
- the reference phase terminal voltages u * M , u * l2 , u * , 3 is from a d-component of the Park-Clarke transformation of reference phase connection currents generated by regulating the DC voltage u dc of a capacitive energy store 9 connected to the converter unit 1 to a DC reference value u * dc i *
- the compensation is preferably carried out according to a proportional-integral characteristic. According to FIG.
- the regulator unit 7 has a first proportional-integral regulator 8 for regulating the DC voltage u dc of the capacitive energy store 9 to the DC reference value u * dc , to which the difference between the DC voltage (u dc ) of the capacitive energy store 9 and the DC reference value u * dc are supplied on the input side and in which the d-component of the Park-Clarke transformation of reference phase terminal currents i * ) ld is present on the output side.
- the Park-Clarke transformation is generally defined
- x is a complex size
- x d is the d-component of the Park-Clarke transformation of size x
- x q is the q-component of the Park-Clarke transformation of size x.
- All of the above-mentioned Park-Clarke transformations of large mentioned above are generated according to the above-mentioned formula.
- the Park-Clarke transformation not only the fundamental of the complex quantities x trans- formed, but also all occurring harmonics of the complex size x.
- the control device 4 has a third calculation unit 16 for the d-component of the Park-Clarke transformation of the filter output voltages u gd , the q-component of the Park-Clarke transformation of the filter output voltages u gq and the fundamental oscillation angle ⁇ t of the Filter output voltages u g1 , u g2l u g3 , wherein the third calculation unit 16 filter output voltages u gl , u g2 , u g3 of the LCL filter 3 are supplied on the input side.
- the third calculation unit 16 is preferably implemented as a phase locked loop, wherein the Park-Clarke transformations of the individual magnitudes take place according to the abovementioned definitions.
- the d-component of the Park-Clarke transformation of reference filter output voltages u * gd is compensated by adjusting the d-component of the Park-Clarke transformation of the phase-connection currents i M to the sum of the d-component of the Park-Clarke transformation Reference phase terminal currents i * (ld and a d-component of the Park-Clarke transformation of at least one harmonic of filter output currents i * fgh d with respect to the fundamental of the filter output currents i ⁇ gl , i fg2 , i ⁇ g3 generated.
- the q-component of the Park-Clarke transformation of the reference filter output voltages u * gq is corrected by balancing the q-component of the Park-Clarke transformation of the phase connection currents i f , q to the sum of the q-component of the Park-Clarke Transformation of the reference phase terminal currents i * (lq and a q-component of the Park-Clarke transformation of at least one Obe rschwingung the filter output currents i * ⁇ ghq with respect to the fundamental oscillation of the filter output currents i (g1 , i ⁇ g2 , i ⁇ generated g3 .
- the compensation is preferably carried out according to a proportional-integral characteristic.
- the control unit 7 for regulating the d-component of the Park-Clarke transformation of the phase connection currents i 1, d to the sum of the d-component of the Park-Clarke transformation of the reference phase connection currents ⁇ * M and a d Component of the Park-Clarke transformation of at least one harmonic of the filter output currents i * (ghd with respect to the fundamental of the filter output currents i
- the d-component of the Park-Clarke transform of the reference phase terminal voltages u * , d is the sum of the d-component of the Park-Clarke transform of the reference filter output voltages u * gd and the d-component of filter output voltages u gd and a d-component of the Park-Clarke transform of at least one harmonic of the filter output voltages u * ghd .
- the q-component of the Park-Clarke transformation of the reference phase terminal voltages u * ⁇ q is the sum of the q-component of the Park-Clarke transformation of the reference filter output voltages u * gq and the q-component of the Park-Clarke transformation Filter output voltages u (] q and a q-component of the Park-Clarke transformation of at least one harmonic of the filter output voltages u * ghq.
- the regulator unit 7 has a first summer 12 to which the d-component of the Park-Clarke transformation of the reference filter output voltages u * gd , the d-component of the filter output voltages u gd and the d-component of the Park-Clarke Transformation of at least one harmonic of the filter output voltages u * g hd are supplied
- the regulator unit 7 has a second summer 13 to which the q-component of the Park-Clarke transformation of the reference filter output voltages u * gq , the q-component of the Park-Clarke transformation of the filter output voltages u gq and the q-component of the Park-Clarke transformation are supplied to at least one harmonic of the filter output voltages u * ghq .
- the q-component of the Park-Clarke transformation at least a harmonic of the filter output currents i * (ghq with respect to the fundamental of the filter output currents i fg1 , ii g2 , i ⁇ g3 , the d component of the Park-Clarke transformation of the at least one harmonic of the reference filter output voltages u * ghd , and the q component of the Park-Clarke transformation of the Any artwork least u a harmonic of the reference filter output voltages * ghq 1, the regulating device 4 according to FIG.
- FIG. 1 a second calculation unit 15. the second calculation unit 15 are shown in FIG., the d-component of the filter output voltages U gd, the q Component of the filter output voltages u gq , the phase connection currents if, i, i ) l2 , i
- FIG. 2 shows an embodiment of the second calculation unit 15, wherein the input variables shown in FIG. 2 are shown in the following formula
- the reference phase terminal voltages u * n, u * i2 , u * i3 are determined by an inverse Park-Clarke transformation of the d-component of the Park-Clarke transformation of the reference phase terminal voltages u * id and the q-component of the Park-Clarke Transformation of the reference phase terminal voltages u * iq generated. According to FIG.
- the control unit 7 has for this purpose a calculation unit 14 for forming the reference phase connection voltages u * lU u * j2 , u * i3 by an inverse Park-Clarke transformation, which the d-component of the Park-Clarke transformation of Reference phase terminal voltages u * id and the q-component of the Park-Clarke transformation of the reference phase terminal voltages u * iq are supplied on the input side.
- FIG. 3 in order to illustrate the mode of action of the active damping according to the method according to the invention explained above, a time profile of the filter output currents i
- a further improvement in the reduction of harmonics is shown by a time profile of the filter output currents i (g1 , i1 g2 , i
- the device according to the invention for carrying out the method according to the invention for operating the converter circuit shown particularly in FIG. 1
- the inventive method is particularly easy to carry out.
- controller unit 8 first proportional-integral rule
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05740409.7A EP1842281B1 (de) | 2005-01-25 | 2005-05-24 | Verfahren und vorichtung zum betrieb einer umrichterschaltung mit einem lcl-filter |
CN2005800470379A CN101103513B (zh) | 2005-01-25 | 2005-05-24 | 用于操作具有lcl滤波器的变换器电路的方法和装置 |
US11/826,480 US7518893B2 (en) | 2005-01-25 | 2007-07-16 | Method for operation of a converter circuit, as well as an apparatus for carrying out the method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US64654405P | 2005-01-25 | 2005-01-25 | |
US60/646,544 | 2005-01-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/826,480 Continuation US7518893B2 (en) | 2005-01-25 | 2007-07-16 | Method for operation of a converter circuit, as well as an apparatus for carrying out the method |
Publications (1)
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WO2006079226A1 true WO2006079226A1 (de) | 2006-08-03 |
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PCT/CH2005/000293 WO2006079226A1 (de) | 2005-01-25 | 2005-05-24 | Verfahren und vorrichtung zum betrieb einer umrichterschaltung mit einem lcl-filter |
Country Status (4)
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US (1) | US7518893B2 (de) |
EP (1) | EP1842281B1 (de) |
CN (1) | CN101103513B (de) |
WO (1) | WO2006079226A1 (de) |
Families Citing this family (17)
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DE502005006587D1 (de) * | 2005-01-25 | 2009-03-19 | Abb Schweiz Ag | Verfahren und vorrichtung zum betrieb einer umrichterschaltung mit einem lcl-filter |
WO2008031893A1 (de) * | 2006-09-15 | 2008-03-20 | Abb Schweiz Ag | Verfahren zum betrieb einer umrichterschaltung sowie vorrichtung zur durchführung des verfahrens |
EP2122816A4 (de) * | 2007-02-22 | 2011-11-30 | Virginia Tech Intell Prop | Steuerverfahren für ein universelles aufbereitungssystem |
EP2093875A1 (de) * | 2008-02-22 | 2009-08-26 | ABB Schweiz AG | Verfahren zum Betrieb einer Umrichterschaltung sowie Vorrichtung zur Durchführung des Verfahrens |
DK2104220T3 (da) * | 2008-03-19 | 2010-03-22 | Abb Schweiz Ag | Fremgangsmåde til drift af et omformerkredsløb samt indretning til gennemførelse af fremgangsmåden |
EP2362515B1 (de) * | 2010-02-19 | 2012-07-25 | ABB Research Ltd | Steuerungsverfahren für netzgekoppelten Einzelphasen-LCL-Umrichter |
US8853979B2 (en) * | 2011-02-28 | 2014-10-07 | Deere & Company | Method and system for calibrating rotor position offset of an electric motor |
CN103036461B (zh) * | 2011-09-29 | 2016-03-30 | 台达电子企业管理(上海)有限公司 | 三相整流模组、其适用的系统及谐波抑制方法 |
US8976554B2 (en) | 2012-09-18 | 2015-03-10 | Siemens Corporation | Control for fault-bypass of cascaded multi-level inverter |
TWI460984B (zh) | 2012-10-01 | 2014-11-11 | Ind Tech Res Inst | 直交流轉換電路 |
US9531292B2 (en) * | 2013-06-14 | 2016-12-27 | Abb Technology Ltd | Arrangement, method and computer program product concerned with tapping of power from a DC power line to an AC power line |
CN104767363B (zh) * | 2014-01-06 | 2017-12-08 | 西门子公司 | 滤波器调制方法、采用该方法的滤波器及逆变器 |
US20160344304A1 (en) * | 2014-01-21 | 2016-11-24 | Mitsubishi Electric Corporation | Semiconductor power conversion apparatus and output current control method |
JP2015186431A (ja) * | 2014-03-26 | 2015-10-22 | 株式会社安川電機 | 電力変換装置、電力変換装置の制御装置および電力変換装置の制御方法 |
KR102109575B1 (ko) * | 2018-05-31 | 2020-05-12 | 엘에스일렉트릭(주) | 인버터 제어장치 |
US11177732B1 (en) | 2020-09-04 | 2021-11-16 | Rockwell Automation Technologies, Inc. | Dynamic resonance control for grid-tied power converters |
CN113054096B (zh) * | 2021-03-03 | 2024-03-19 | 南京大学 | 一种调控磁性薄膜本征阻尼因子的方法 |
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- 2005-05-24 WO PCT/CH2005/000293 patent/WO2006079226A1/de active Application Filing
- 2005-05-24 EP EP05740409.7A patent/EP1842281B1/de active Active
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CN101103513B (zh) | 2011-06-01 |
EP1842281B1 (de) | 2016-07-13 |
EP1842281A1 (de) | 2007-10-10 |
CN101103513A (zh) | 2008-01-09 |
US20070263418A1 (en) | 2007-11-15 |
US7518893B2 (en) | 2009-04-14 |
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