WO2015173892A1 - 電動機駆動システム - Google Patents
電動機駆動システム Download PDFInfo
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- WO2015173892A1 WO2015173892A1 PCT/JP2014/062731 JP2014062731W WO2015173892A1 WO 2015173892 A1 WO2015173892 A1 WO 2015173892A1 JP 2014062731 W JP2014062731 W JP 2014062731W WO 2015173892 A1 WO2015173892 A1 WO 2015173892A1
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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
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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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/10—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors for preventing overspeed or under speed
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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
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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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/16—Controlling the angular speed of one shaft
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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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac 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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/166—Driving load with high inertia
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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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/0085—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for high speeds, e.g. above nominal speed
- H02P21/0089—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for high speeds, e.g. above nominal speed using field weakening
Definitions
- Embodiment of this invention is related with the motor drive system which performs commercial synchronous insertion and disconnection control.
- a drive variable speed drive system for driving an electric motor with electric power supplied from an inverter and a commercial drive system for driving an electric motor with electric power supplied from a commercial power source. Further, since the drive variable speed drive system can be driven by arbitrarily setting the rotational speed of the electric motor, the electric motor is driven (or called operation) based on a speed reference designated from the outside. Drive variable speed drive (or drive variable speed operation) is used.
- variable speed drive and the commercial drive are used while repeating insertion and disconnection described later according to the mode of the electric motor.
- FIG. 3 is a timing chart showing the operation of the conventional motor drive system.
- the illustrated example is an example in the case of performing parallel switching for switching from drive variable speed drive to commercial drive and disconnecting for switching from commercial drive to drive variable speed drive.
- a description will be given with reference to this figure.
- the insertion process is performed as follows by a system control unit (not shown) that controls the motor drive system.
- the system control unit sets a drive drive command (FIG. 3 (1), t1) and a speed reference for setting the rotation speed of the motor (FIG. 3 (2), t1) in order to drive the motor at a variable drive speed.
- the external speed reference is an example when the speed reference is set from the outside. 3 (1) and (2), the motor starts to be driven, the motor frequency / voltage gradually increases (variable speed drive) (FIG. 3 (4)), and set based on the external speed reference. When the speed is reached, the driving is continued at that speed (FIG. 3 (4), t2-t3, drive variable speed operation).
- a commercial switch (not shown) is turned on at timing t5 and switched to commercial power supply. By this switching, the drive current is interrupted (FIG. 3 (5)) and the commercial current is supplied (FIG. 3 (6)).
- the present invention provides an electric motor drive system that performs on-off control of the above-described commercial drive command and drives the electric motor based on a drive speed reference in an electric motor drive system that performs commercial synchronous insertion and disconnection control. Objective.
- an electric motor drive system of the present invention is connected to a commercial power source and is provided between a drive variable speed drive means for driving an electric motor at a variable speed, and between the drive variable speed drive means and the electric motor.
- a control unit that arbitrarily switches between a variable speed driving unit and the commercial driving unit to drive the electric motor, and a system control unit that performs setting for driving the electric motor in the control unit, and the setting includes: A drive drive command setting for driving the electric motor by the drive variable speed drive means; and a speed reference setting for setting the rotation speed of the electric motor.
- the motor When the drive drive command is set from the motor control unit and the speed reference is set, the motor is driven at a variable speed based on the speed reference, and the rotational speed of the motor exceeds a predetermined speed reference , Characterized in that it comprises an insertion means for controlling the first switch and the second switch to drive the electric motor in a commercial manner, and switching the drive variable speed drive to the commercial drive by the insertion means. .
- FIG. 1 is a schematic diagram illustrating a configuration of an electric motor drive system according to Embodiment 1.
- FIG. 4 is a timing chart for explaining the operation of the electric motor drive system according to the first embodiment. The timing chart explaining operation
- FIG. 1 is a schematic diagram illustrating a configuration of an electric motor drive system according to the first embodiment.
- the illustrated motor drive system includes a commercial power source (commercial drive means) 15, a host circuit breaker 1, an inverter unit (drive variable speed drive means) 2, a drive output side switch (first switch) 3, a transformer 4, It is composed of a commercial output side circuit breaker (second switch) 5 and a load (here, an electric motor (or motor) 10), and operates by receiving a commercial power supply 15.
- the switch includes a disconnector or a circuit breaker.
- the circuit breaker can interrupt an electric circuit at the time of a short circuit, an overcurrent, or a ground fault.
- the form of the commercial power supply 15 includes a first commercial power supply system 15a for supplying the commercial power supply 15 directly to the motor 10 and a second commercial power supply system 15b for supplying the commercial power supply 15 to the motor 10 via the inverter unit 2. It is configured.
- the first commercial power supply system 15 a is connected to one end of the commercial output side circuit breaker 5, and the other end is connected to the electric motor 10.
- the second commercial power supply system 15b is connected to one end of the upper circuit breaker 1, the other end is connected to the inverter unit 2, and a commercial power supply (for example, AC 100V, 50 Hz) is supplied.
- a commercial power supply for example, AC 100V, 50 Hz
- the illustrated inverter section 2 includes a converter and an inverter.
- the converter converts (rectifies) supplied commercial power (AC power) into DC power.
- the inverter converts the DC power source converted by the converter into an AC power source that can change both voltage and frequency.
- the inverter of the present embodiment is provided with four switching elements (not shown) connected in series to the supplied DC power supply, and the gate terminals (not shown) of the switching elements are respectively connected to the control unit 2a. And is controlled by the control unit 2a to generate an AC power source necessary for variable speed driving of the electric motor 10.
- the AC power generated by the inverter unit 2 is connected to the drive output side switch 3.
- the AC power generated by the inverter unit 2 varies depending on the type of electric motor serving as a load.
- the output of the inverter unit 2 may be a single-phase AC power source (for example, AC 100 V / 50 Hz) with a predetermined voltage, but when the motor is a three-phase motor, the output of the inverter unit 2 Requires a three-phase AC power supply. Any of these power supplies can be generated by controlling the gate terminals of the switching elements constituting the inverter.
- the control unit 2a opens and closes the drive output side switch 3 and the commercial output side circuit breaker 5 at the timing described later, and performs parallel insertion and disconnection.
- FIG. 2 is a timing chart showing the operation of the motor drive system according to the present embodiment.
- the illustrated example is an example in the case of performing parallel switching for switching from drive variable speed drive to commercial drive and disconnecting for switching from commercial drive to drive variable speed drive.
- a description will be given with reference to this figure.
- the insertion process is performed as follows by the system control unit 20 that controls the electric motor drive system 100.
- the system control unit 20 sets a drive drive command (FIG. 2 (1), t1) to drive the motor 10 at a variable drive speed, and sets an external speed reference to n1 to set the rotation speed of the motor 10.
- the speed reference to be set is set (FIG. 2 (2), t1).
- the setting of the speed reference is performed from the system control unit 20 to the control unit 2a of the inverter unit 2.
- the external speed reference means that the speed reference is set from the outside of the inverter unit 2.
- the rotation speed (synonymous with the rotation frequency) of the electric motor 10 is accelerated until it reaches a speed n2 (hereinafter referred to as an external speed reference n2) set based on the external speed reference. Therefore, when the external speed reference n2 is the same as the commercial frequency, the rotation frequency of the electric motor 10 is accelerated to the commercial frequency (t3-t4).
- the effect of performing the synchronous control when the rotation speed of the motor 10 enters the speed reference allowable value SPC set with respect to the external speed reference n2 is, for example, that the motor is commercial speed (for example, 50 Hz / 60 Hz) ⁇
- the motor can be driven at a variable speed by an inverter.
- the external speed reference is set from n2 to n1, and a.
- the rotational speed of the electric motor 10 is less than the external speed reference n2, or b.
- the rotational speed of the electric motor 10 is other than the speed reference allowable value SPC set with respect to the external speed reference n2, (FIG. 2 (2), t6), the sequence separation process is performed in the following procedure.
- A. Or b. Is set in advance in accordance with the setting in (2) above.
- the on / off control of the commercial drive command is stopped, and the system is simplified by performing the commercial synchronous insertion and disconnection control based on the drive speed reference.
- An electric motor drive system that can be provided can be provided.
- the electric motor drive of the motor that can perform the commercial synchronous insertion and disconnection control based on the drive speed reference without performing on / off control of the commercial drive command Applicable to the system.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
Description
(2)電動機の周波数が商用周波数に近づくと、位相同期制御によりドライブ出力を商用電源の位相・振幅に一致させる同期制御を行う。
(3)ドライブ出力と商用電源との位相・電圧振幅差が設定レベル以内で設定時間(XFRDL:併入切り替え速度遅れ時間)継続する。
(4)上記(3)で設定時間継続後、商用出力側遮断器5を投入する(t5)。
(5)ドライブ可変速駆動を停止する(t5)。
(6)ドライブ出力側開閉器(図示しない)を引き外す。
(7)併入完了となる。
(8)所定の時間(t5-t6)、商用出力による商用駆動(商用運転)が行われる。
(2)位相同期回路が、変成器VTで検知した商用電源の周波数・位相・電圧振幅を検出し、位相検出誤差が設定レベル以内で、設定時間(CPTDL:解列切替え速度遅れ時間)継続する。
(3)上記(2)で設定時間継続後、商用出力側遮断器を引き外す。
(4)上記(2)で検出した位相を商用電源の周波数合わせてドライブ可変速駆動を開始する(t7)。
(5)解列完了となる。
(6)電動機はドライブ可変速駆動となる(t7-t8)。
(7)所定の時間(t8-t9)、ドライブ出力によるドライブ可変速駆動(ドライブ可変速運転)が行われる。
なお、電動機10の回転速度が外部速度基準n2に対して設定した速度基準許容値SPC内に入ったときに上記同期制御を行う効果は、例えば、電動機を商用速度(例えば、50Hz/60Hz)±数%以内で商用駆動し、これ以外の速度基準の場合は、当該電動機をインバータによる可変速駆動にすることができる。
(5)ドライブ可変速駆動を停止する(t5)。
(6)ドライブ出力側開閉器3を引き外す。
(7)併入完了となる。
(8)所定の時間(t5-t6)、商用出力による商用駆動(商用運転)が行われる。なお、併入に当たっては、商用併入に伴う併入切り替え速度遅れ時間XFRDL後、t5のタイミングで商用側開閉器5が投入され、商用電源に切り替わる。この切替えにより、ドライブ電流が遮断される((図2(4))と共に、商用電流が供給される(図2(5))。
(2)位相同期回路が、変成器4で検知した商用電源15aの周波数・位相・電圧振幅を検出し、位相検出誤差が設定レベル以内ならば、設定時間(CPTDL:解列切替え速度遅れ時間)継続する。
(3)上記(2)で設定時間継続後、商用出力側遮断器5を引き外す。
(4)上記(2)で検出した位相を商用電源15aの周波数に合わせてドライブ可変速駆動を開始する(t7)。
(5)解列完了となる。
(6)電動機10は、ドライブ可変速駆動となる(t7-t8)。
(7)所定の時間(t8-t9)、ドライブ出力によるドライブ可変速駆動(ドライブ可変速運転)が行われる。
2 インバータ部
2a 制御部
3 ドライブ出力側開閉器
5 商用出力側遮断器
10 電動機(モータ)
15 商用電源
15a 第1の商用電源系統
15b 第2の商用電源系統
20 システム制御部
100 電動機駆動システム
Claims (4)
- 商用電源に接続され、電動機を可変速駆動するドライブ可変速駆動手段と、
前記ドライブ可変速駆動手段と前記電動機との間に設けられた第1の開閉器と、
前記商用電源と前記電動機との間に設けられた第2の開閉器と、
前記商用電源から出力される商用電力で前記電動機を駆動する商用駆動手段と、
前記ドライブ可変速駆動手段及び前記商用駆動手段を任意に切り替えて前記電動機を駆動する制御部と、
前記電動機を駆動するための設定を前記制御部に行うシステム制御部と、を備え、
前記設定は、
前記電動機を前記ドライブ可変速駆動手段によって駆動するためのドライブ駆動指令の設定と、
前記電動機の回転速度を設定するための速度基準の設定と、を備え、
前記制御部は、
前記システム制御部から前記ドライブ駆動指令が設定され、さらに前記速度基準が設定されると、前記速度基準に基づいて前記電動機を可変速駆動し、当該電動機の回転速度が所定の速度基準を超えたとき、前記第1の開閉器及び前記第2の開閉器を制御して当該電動機を商用駆動する併入手段を備え、
前記併入手段により前記ドライブ可変速駆動から商用駆動へ切替えることを特徴とする動機駆動システム。 - 前記制御部はまた、
前記システム制御部から前記ドライブ駆動指令が供給され、さらに前記速度基準が設定されると、前記速度基準に基づいて前記電動機を可変速駆動し、当該電動機の回転速度が所定の速度基準を超えたとき、又は、当該電動機の回転速度が前記速度基準に対して設定した速度基準許容値以内に入ったときに、前記第1の開閉器及び前記第2の開閉器を制御して当該電動機を商用駆動する併入手段を備え、
前記併入手段により前記ドライブ可変速駆動から商用駆動へ切替えることを特徴とする請求項1記載の電動機駆動システム。 - 前記制御部はまた、
前記システム制御部から前記ドライブ駆動指令が供給され、さらに前記速度基準が設定され、商用駆動する前記電動機の回転速度が前記所定の速度基準未満になったとき、前記第1の開閉器及び前記第2の開閉器を制御して可変速駆動する解列手段を備え、
前記解列手段により前記商用駆動から前記ドライブ可変速駆動へ切替えることを特徴とする請求項1乃至請求項2記載の電動機駆動システム。 - 前記制御部はまた、
前記システム制御部から前記ドライブ駆動指令が供給され、さらに前記速度基準が設定され、商用駆動する前記電動機の回転速度が前記所定の速度基準未満になったとき、又は、前記電動機の回転速度が速度基準に対して設定した速度基準許容値以外になったときに、前記第1の開閉器及び前記第2の開閉器を制御して可変速駆動する解列手段を備え、
前記解列手段により前記商用駆動から前記ドライブ可変速駆動へ切替えることを特徴とする請求項1乃至請求項3記載の電動機駆動システム。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2014/062731 WO2015173892A1 (ja) | 2014-05-13 | 2014-05-13 | 電動機駆動システム |
EP14892012.7A EP3148072B1 (en) | 2014-05-13 | 2014-05-13 | Electric motor drive system |
JP2016519021A JP6310552B2 (ja) | 2014-05-13 | 2014-05-13 | 電動機駆動システム |
KR1020167032255A KR101884545B1 (ko) | 2014-05-13 | 2014-05-13 | 전동기 구동 시스템 |
CN201480078796.0A CN106464186B (zh) | 2014-05-13 | 2014-05-13 | 电动机驱动系统 |
US15/348,086 US10069452B2 (en) | 2014-05-13 | 2016-11-10 | Motor driving system |
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PCT/JP2014/062731 WO2015173892A1 (ja) | 2014-05-13 | 2014-05-13 | 電動機駆動システム |
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US15/348,086 Continuation US10069452B2 (en) | 2014-05-13 | 2016-11-10 | Motor driving system |
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EP (1) | EP3148072B1 (ja) |
JP (1) | JP6310552B2 (ja) |
KR (1) | KR101884545B1 (ja) |
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WO2019049321A1 (ja) | 2017-09-08 | 2019-03-14 | 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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JP6310552B2 (ja) * | 2014-05-13 | 2018-04-11 | 東芝三菱電機産業システム株式会社 | 電動機駆動システム |
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JP6310552B2 (ja) * | 2014-05-13 | 2018-04-11 | 東芝三菱電機産業システム株式会社 | 電動機駆動システム |
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2014
- 2014-05-13 JP JP2016519021A patent/JP6310552B2/ja active Active
- 2014-05-13 KR KR1020167032255A patent/KR101884545B1/ko active IP Right Grant
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- 2014-05-13 CN CN201480078796.0A patent/CN106464186B/zh active Active
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JPH01186187A (ja) * | 1988-01-20 | 1989-07-25 | Toshiba Corp | 誘導機の制御装置 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019049321A1 (ja) | 2017-09-08 | 2019-03-14 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
US11081999B2 (en) | 2017-09-08 | 2021-08-03 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Power conversion apparatus |
Also Published As
Publication number | Publication date |
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EP3148072A4 (en) | 2017-12-27 |
KR101884545B1 (ko) | 2018-08-01 |
CN106464186B (zh) | 2019-11-19 |
JPWO2015173892A1 (ja) | 2017-04-20 |
EP3148072B1 (en) | 2023-07-26 |
JP6310552B2 (ja) | 2018-04-11 |
US20170063282A1 (en) | 2017-03-02 |
KR20160145758A (ko) | 2016-12-20 |
US10069452B2 (en) | 2018-09-04 |
CN106464186A (zh) | 2017-02-22 |
EP3148072A1 (en) | 2017-03-29 |
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