WO2011114962A1 - モータ制御装置 - Google Patents
モータ制御装置 Download PDFInfo
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- WO2011114962A1 WO2011114962A1 PCT/JP2011/055498 JP2011055498W WO2011114962A1 WO 2011114962 A1 WO2011114962 A1 WO 2011114962A1 JP 2011055498 W JP2011055498 W JP 2011055498W WO 2011114962 A1 WO2011114962 A1 WO 2011114962A1
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- capacitor
- inverter
- circuit
- rectifier circuit
- motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
-
- 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
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- 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
- H02M5/00—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
- H02M5/40—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 with intermediate conversion into dc
- H02M5/42—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 with intermediate conversion into dc by static converters
- H02M5/44—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
Definitions
- the present invention relates to a motor drive control device, for example, a motor control device using a small-capacitance capacitor.
- the smoothing capacitor is significantly reduced in capacity to intentionally generate a ripple having a frequency twice that of the power supply in the DC voltage, and the input current waveform can be improved in a simple manner. A high power factor can be realized.
- the capacity of the coil inserted between the AC power supply and the rectifier circuit can be greatly reduced or eliminated.
- the reduction in the capacity of the smoothing capacitor causes the voltage to increase rapidly when the smoothing capacitor absorbs large regenerative energy generated when the motor is stopped. This overvoltage may destroy the switching element of the inverter of the motor control device.
- FIG. 5 is a block diagram of the motor control device disclosed in the above publication. As shown in FIG. 5, the motor control device uses the power supplied from the AC power supply 1 as an input to the rectifier circuit 2, and the output of the rectifier circuit 2 is used for smoothing with a small capacity of about 1/100 of the capacity normally used. So as to be input to the capacitor 3.
- the inverter 4 has six transistors (5u to 5z) and a diode (6u to 6z) connected in the opposite direction to this transistor in a three-phase bridge connection, and is connected in parallel with the capacitor 3.
- the motor 7 is connected so that the output of the inverter 4 is input, the control circuit 8 drives the gates of the transistors (5u to 5z) of the inverter 4, and the power supply circuit 9 supplies power to the control circuit 8.
- the capacitor 10 is connected in parallel with the smoothing capacitor 3 via a diode 11 that is a rectifier circuit, and a load 12 is further connected in parallel with the capacitor 10. Therefore, the regenerative energy of the motor is absorbed by the capacitor 3 and the capacitor 10, and the energy is consumed by the load 12 before the voltage exceeds the withstand voltage. Therefore, it is possible to prevent the driving elements from being destroyed.
- JP 2002-51589 A Japanese Patent Laid-Open No. 2005-198377
- the diode 6u or / and 6v or / and 6w of the inverter 4 is turned on, and then the rectifier circuit Since a certain diode 11 becomes conductive, a time delay occurs. Due to this time delay, the voltage may exceed the withstand voltage.
- the present invention has been made to solve the above problems, and even when the capacity of the smoothing capacitor is reduced, the destruction of each drive element due to overvoltage of the regenerative energy of the motor is more effective. It is an object of the present invention to provide a motor control device that can be prevented and that can effectively use regenerative energy.
- a motor control device is connected to a first rectifier circuit having a single-phase AC power supply as an input and the first rectifier circuit, and smoothes the DC power obtained by the first rectifier circuit.
- the adjustment circuit includes a second rectifier circuit connected to the output side of the inverter, a second capacitor connected to the second rectifier circuit and provided to absorb regenerative energy of the motor, and a second capacitor And a load connected in parallel.
- a motor control device is connected to a first rectifier circuit that receives a single-phase AC power supply and a first rectifier circuit, and smoothes the DC power obtained by the first rectifier circuit.
- a first capacitor that is connected in parallel with the first capacitor to convert DC power into AC power, a motor connected to the output side of the inverter, a control circuit that controls the inverter, and a control circuit And a power supply circuit for supplying a voltage.
- the power supply circuit includes a second rectifier circuit that receives a single-phase AC power supply, a second capacitor that is connected to the second rectifier circuit and smoothes the DC power obtained by the second rectifier circuit, And a voltage conversion circuit connected in parallel with the two capacitors to convert the DC high voltage to a DC low voltage and supply the DC low voltage to the control circuit.
- a third rectifier circuit that connects the second capacitor and the output side of the inverter is further provided.
- the second capacitor has a larger capacity than the first capacitor.
- the regenerative energy of the motor is absorbed by the first and second capacitors.
- the regenerative energy of the motor is used with the control circuit as a load.
- the motor control device includes an adjustment circuit that absorbs regenerative energy of the motor.
- the adjustment circuit includes a second rectifier circuit connected to the output side of the inverter, a second capacitor connected to the second rectifier circuit and provided to absorb regenerative energy of the motor, and a second capacitor And a load connected in parallel. Therefore, when the regenerative energy of the motor is generated, the regenerative energy is absorbed by the capacitor, and the regenerative energy is consumed by the load. Therefore, it is possible to prevent the driving elements from being destroyed due to the regenerative energy overvoltage.
- the capacitor is connected to the output of the inverter via the rectifier circuit, the absorption of energy can be started earlier when the regenerative energy is generated, and the voltage rise can be suppressed more quickly than in the prior art. In other words, each drive element can be more effectively prevented from being destroyed.
- the regenerative energy is absorbed by the capacitor through one rectifier circuit, the energy loss is smaller than before, and the regenerative energy stored in the capacitor can be used more effectively.
- FIG. 1 is a block diagram of a motor control device according to a first embodiment of the present invention. It is a figure explaining the voltage waveform in the capacitor
- FIG. 1 is a block diagram of a motor control device according to the first embodiment of the present invention.
- the motor control device uses power supplied from AC power supply 1 as input of rectifier circuit 2, and outputs of rectifier circuit 2 are 1/100 of the capacity normally used. They are connected so as to be input to a smoothing capacitor 3 having a small capacity. Capacitor 3 is provided between positive node NA between the output buses of rectifier circuit 2 and negative node NB.
- the inverter 4 has six transistors (5u to 5z) and a diode (6u to 6z) connected in the opposite direction to this transistor in a three-phase bridge connection, and is connected to the capacitor 3 in parallel.
- the motor 7 is connected so that the output of the inverter 4 is input, the control circuit 8 drives the gates of the transistors (5u to 5z) of the inverter 4, and the power supply circuit 9 supplies power to the control circuit 8. Yes.
- an adjustment circuit for absorbing the regenerative energy of motor 7 is provided.
- the adjustment circuit includes a rectifier circuit 13, a capacitor 14, and a load 12.
- the rectifier circuit 13 includes diodes 13u, 13v, and 13w, and the diodes 13u, 13v, and 13w are connected to respective phase outputs of the inverter 4, respectively.
- the diodes 13u, 13v, and 13w that are the rectifier circuit 13 are connected to the negative node NB via the capacitor.
- the rectifier circuit 13 is connected so that current flows only from the output of the inverter 4 (input of the motor 7) to the capacitor 14.
- the load 12 is connected in parallel with the capacitor 14.
- a resistor is used as an example of a load.
- the regenerative energy generated by the motor 7 is absorbed by the smoothing capacitor 3 and the capacitor 14 having a small capacity.
- the energy stored in the capacitor 14 is consumed by the load 12 connected in parallel with the capacitor 14.
- the power supply circuit 9 supplies power to the control circuit 8 that controls the inverter 4.
- the operation of the motor control device according to the first embodiment configured as described above will be described below.
- FIG. 2 is a diagram illustrating a voltage waveform in capacitor 3 of the motor control device according to the first embodiment of the present invention.
- the charge stored in the capacitor 3 is used, and the instantaneous minimum voltage decreases as shown in the voltage waveform PB.
- the instantaneous maximum voltage determined from the voltage of the AC power supply 1 is 282 V and does not change.
- the instantaneous minimum voltage decreases to almost 0V as shown in the voltage waveform PC.
- the instantaneous maximum voltage determined from the voltage of the AC power supply 1 is 282 V and does not change.
- the capacitor 3 When the capacitor 3 has a small capacity as described above, when the load current is taken out, the input AC power source 1 is not fully smoothed but a waveform obtained by full-wave rectification. Since the ripple of voltage and current of the capacitor 3 increases, it is preferable to use a film capacitor.
- FIG. 3 is a diagram illustrating the characteristics of the voltage value across capacitor 3 according to the first embodiment of the present invention.
- the overvoltage of the inverter 4 used is 450V
- the overvoltage exceeds 450V which is the withstand voltage. Therefore, each drive element of the inverter may be destroyed due to the influence of overvoltage.
- the motor control device has a configuration in which an adjustment circuit that absorbs the regenerative energy of the motor is provided. Specifically, since the capacitor 14 is connected to the output of the inverter 4 via the rectifier circuit 13, the time delay of regenerative energy is small. Since the energy stored in the capacitor 14 is consumed by the load 12, as shown in the voltage waveform QB in FIG. 3, the voltage can be suppressed more quickly than in the conventional motor control device, and the voltage rise due to regenerative energy. Less than withstand voltage. That is, while the conventional motor control device has two stages of diodes connected in series, the motor control device according to the first embodiment of the present invention has a one-stage diode, and therefore the time delay is small.
- the first diode 6u or / and 6v or / and 6w of the inverter 4 and the rectifier circuit 11 are used. Since current flows through both the second diode and the second diode, loss occurs in two stages of the diode, and the energy available in the load is reduced.
- the diode 6u or / and 6v or / and 6w of the inverter 4 does not pass, and the regenerative energy is absorbed by the capacitor 14 only through the first diode of the rectifier circuit 13. Therefore, the energy loss becomes smaller than that in the conventional case, and the regenerative energy stored in the capacitor 14 can be used more effectively in the load 12.
- the capacitor 14 since the capacitor 14 has almost no ripple, it is not necessary to consider the damage caused by the heat of the ripple, and an inexpensive electrolytic capacitor can be used. Therefore, the destruction of each driving element due to the overvoltage of the regenerative energy that is small and inexpensive is prevented.
- a motor control device can be realized.
- Capacitor 3 having a sufficiently small capacity (for example, 10 ⁇ F) is used to intentionally generate a ripple with a frequency twice that of the power supply in the DC voltage to improve the input current waveform and increase the power factor.
- a capacitor for example, 50 ⁇ F
- a capacitor larger than the capacitor 3 is used as the capacitor 14.
- the energy stored in the capacitor 3 is maintained while the drive of the inverter 4 is stopped, but is consumed when the drive of the inverter 4 is resumed.
- a load such as a resistor is connected in parallel with the capacitor 3, energy is consumed by the load even when the inverter 4 is stopped.
- FIG. 4 is a block diagram of a motor control device according to the second embodiment of the present invention.
- the motor control device according to the second embodiment of the present invention eliminates capacitor 14 and load 12 as compared with the motor control device according to the first embodiment described in FIG. 9 # is different.
- rectifier circuit 13 is connected to power supply circuit 9 #. Since other configurations are the same as those of the motor control device according to the first embodiment described in FIG. 1, detailed description thereof will not be repeated.
- the power supply circuit 9 # includes a rectifier circuit 15 that rectifies AC power of the AC power supply 1 into DC power, a capacitor 14 # connected in parallel to the rectifier circuit 15, and a capacitor 14 #.
- the voltage conversion circuit 16 converts a DC high voltage connected in parallel into a DC low voltage.
- the voltage conversion circuit 16 supplies a necessary voltage to the control circuit 8.
- Capacitor 14 # is provided between a positive node NC between the output buses of rectifier circuit 15 and a negative node ND.
- the capacitor 14 # for the purpose of smoothing the DC high voltage of the power supply circuit 9 # is also used as the capacitor for absorbing the regenerative energy described above.
- the positive node NC and the rectifier circuit 13 are connected.
- the energy stored in the winding in the motor 7 is absorbed by the capacitor 3 and the capacitor 14 # as regenerative energy.
- capacitor for power supply circuit 9 # for smoothing DC high voltage and the capacitor for regenerative energy absorption can be shared by capacitor 14 #, the number of parts can be reduced, and the regenerative energy overvoltage can be reduced in size and at low cost. It is possible to realize a motor control device that prevents destruction of each drive element.
- the number of parts can be reduced by using the load 12 as the control circuit 8 of the inverter 4, and efficient operation can be achieved by using the regenerative energy stored in the capacitor 14 # as the energy of the control circuit 8. It can be performed.
- the first diode 6u or / and 6v or / and 6w of the inverter 4 is used. Since the current flows through both the second diode of the rectifier circuit 11, a loss occurs in two stages of the diode, and the energy available in the load is reduced.
- diode 6u or / and 6v or / and 6w of inverter 4 does not pass, and regenerative energy is supplied to capacitor 14 # only through the first diode of rectifier circuit 13. Since it is absorbed, the energy loss becomes smaller than before, and the regenerative energy stored more effectively in the capacitor 14 # can be used as the energy of the control circuit 8.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Stopping Of Electric Motors (AREA)
- Control Of Ac Motors In General (AREA)
- Rectifiers (AREA)
Abstract
Description
図5に示されるように、当該モータ制御装置は、交流電源1が供給する電力を整流回路2の入力とし、整流回路2の出力を通常用いられる容量の1/100程度の容量の小さい平滑用のコンデンサ3の入力とするように接続されている。インバータ4は、6個のトランジスタ(5u~5z)と、このトランジスタと逆向きに接続されたダイオード(6u~6z)とを3相ブリッジ接続しており、コンデンサ3と並列に接続されている。
好ましくは、モータの回生エネルギーは、第1および第2のコンデンサで吸収される。
図1は、本発明の実施の形態1に従うモータ制御装置のブロック図である。
以上のように構成された本実施の形態1に従うモータ制御装置について、以下その動作を説明する。
図3は、本発明の実施の形態1に従うコンデンサ3の両端の電圧値の特性を説明する図である。
図4は、本発明の実施の形態2に従うモータ制御装置のブロック図である。
当該構成により実施の形態1で説明したのと同様に、モータ7内の巻線に蓄えられたエネルギーは、回生エネルギーとして、コンデンサ3と、コンデンサ14#に吸収される。
Claims (5)
- 単相交流電源を入力とする第1の整流回路(2)と、
前記第1の整流回路と接続され、前記第1の整流回路で得られた直流電力を平滑化する第1のコンデンサ(3)と、
前記第1のコンデンサと並列に接続されて、直流電力を交流電力に変換するインバータ(4)と、
前記インバータの出力側と接続されたモータ(7)と、
前記インバータを制御する制御回路(8)と、
前記モータの回生エネルギーを吸収する調整回路とを備え、
前記調整回路は、
前記インバータの出力側と接続された第2の整流回路(13)と、
前記第2の整流回路と接続され、前記モータの回生エネルギーを吸収するために設けられた第2のコンデンサ(14)と、
前記第2のコンデンサと並列に接続された負荷(12)とを含む、モータ制御装置。 - 単相交流電源を入力とする第1の整流回路(2)と、
前記第1の整流回路と接続され、前記第1の整流回路で得られた直流電力を平滑化する第1のコンデンサ(3)と、
前記第1のコンデンサと並列に接続されて、直流電力を交流電力に変換するインバータ(4)と、
前記インバータの出力側と接続されたモータ(7)と、
前記インバータを制御する制御回路(8)と、
前記制御回路に電圧を供給する電源回路(9#)とを備え、
前記電源回路は、
前記単相交流電源を入力とする第2の整流回路(15)と、
前記第2の整流回路と接続され、前記第2の整流回路で得られた直流電力を平滑化する第2のコンデンサ(14#)と、
前記第2のコンデンサと並列に接続されて、直流高電圧を直流低電圧に変換して前記制御回路に供給する電圧変換回路(16)とを含み、
前記第2のコンデンサと前記インバータの出力側とを接続する第3の整流回路(13)をさらに備える、モータ制御装置。 - 前記第2のコンデンサは、前記第1のコンデンサよりも容量が大きい、請求項1または2記載のモータ制御装置。
- 前記モータの回生エネルギーは、前記第1および第2のコンデンサで吸収される、請求項1~3のいずれかに記載のモータ制御装置。
- 前記モータの回生エネルギーは、前記制御回路を負荷として用いられる、請求項2に記載のモータ制御装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/583,245 US8872456B2 (en) | 2010-03-19 | 2011-03-09 | Motor control device |
CN2011800138069A CN102804593A (zh) | 2010-03-19 | 2011-03-09 | 电动机控制装置 |
Applications Claiming Priority (2)
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JP2010-064040 | 2010-03-19 | ||
JP2010064040A JP4817204B2 (ja) | 2010-03-19 | 2010-03-19 | モータ制御装置 |
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WO2011114962A1 true WO2011114962A1 (ja) | 2011-09-22 |
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US (1) | US8872456B2 (ja) |
JP (1) | JP4817204B2 (ja) |
CN (1) | CN102804593A (ja) |
MY (1) | MY157306A (ja) |
WO (1) | WO2011114962A1 (ja) |
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US9054618B2 (en) * | 2012-12-18 | 2015-06-09 | Infineon Technologies Austria Ag | Safety circuit and emergency power supply for gate control circuit |
CN110960772A (zh) * | 2013-07-01 | 2020-04-07 | 瑞思迈私人有限公司 | 呼吸设备的电动机驱动系统 |
CN105356443B (zh) * | 2015-12-02 | 2019-04-23 | 浙江绿动电机科技有限公司 | 电动工具及其断电保护系统 |
JP6359223B1 (ja) * | 2017-02-27 | 2018-07-18 | 三菱電機株式会社 | モータ駆動装置および回生抵抗選定装置 |
CN107171614B (zh) * | 2017-05-05 | 2020-08-14 | 大连理工大学 | 一种驱动与反馈电流不对称的电机驱动电路及应用 |
CN111049459B (zh) * | 2019-12-31 | 2021-07-20 | 哈尔滨工业大学 | 一种无电解电容永磁同步电机空调驱动装置的制动方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04165990A (ja) * | 1990-10-29 | 1992-06-11 | Toshiba Corp | モータの駆動装置 |
JP2005198377A (ja) * | 2004-01-05 | 2005-07-21 | Matsushita Electric Ind Co Ltd | モータ駆動用インバータ制御装置 |
JP2006115667A (ja) * | 2004-10-18 | 2006-04-27 | Fuji Electric Fa Components & Systems Co Ltd | サージ電圧抑制装置 |
Family Cites Families (3)
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JP2002051589A (ja) | 2000-07-31 | 2002-02-15 | Isao Takahashi | モータ駆動用インバータの制御装置 |
KR101463159B1 (ko) * | 2007-12-21 | 2014-11-20 | 엘지전자 주식회사 | 공기조화기의 전동기 제어장치 |
JP2010288331A (ja) | 2009-06-09 | 2010-12-24 | Sharp Corp | インバータ装置 |
-
2010
- 2010-03-19 JP JP2010064040A patent/JP4817204B2/ja not_active Expired - Fee Related
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2011
- 2011-03-09 MY MYPI2012003929A patent/MY157306A/en unknown
- 2011-03-09 WO PCT/JP2011/055498 patent/WO2011114962A1/ja active Application Filing
- 2011-03-09 CN CN2011800138069A patent/CN102804593A/zh active Pending
- 2011-03-09 US US13/583,245 patent/US8872456B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04165990A (ja) * | 1990-10-29 | 1992-06-11 | Toshiba Corp | モータの駆動装置 |
JP2005198377A (ja) * | 2004-01-05 | 2005-07-21 | Matsushita Electric Ind Co Ltd | モータ駆動用インバータ制御装置 |
JP2006115667A (ja) * | 2004-10-18 | 2006-04-27 | Fuji Electric Fa Components & Systems Co Ltd | サージ電圧抑制装置 |
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US20130038258A1 (en) | 2013-02-14 |
JP4817204B2 (ja) | 2011-11-16 |
JP2011200020A (ja) | 2011-10-06 |
CN102804593A (zh) | 2012-11-28 |
US8872456B2 (en) | 2014-10-28 |
MY157306A (en) | 2016-05-31 |
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