WO2024095603A1 - Dispositif d'alimentation électrique et dispositif de traitement laser le comprenant - Google Patents

Dispositif d'alimentation électrique et dispositif de traitement laser le comprenant Download PDF

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Publication number
WO2024095603A1
WO2024095603A1 PCT/JP2023/032404 JP2023032404W WO2024095603A1 WO 2024095603 A1 WO2024095603 A1 WO 2024095603A1 JP 2023032404 W JP2023032404 W JP 2023032404W WO 2024095603 A1 WO2024095603 A1 WO 2024095603A1
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WO
WIPO (PCT)
Prior art keywords
voltage
power supply
supply device
circuit
command
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PCT/JP2023/032404
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English (en)
Japanese (ja)
Inventor
雄太 黒崎
真史 三溝
陣 松坂
Original Assignee
パナソニックＩｐマネジメント株式会社
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Publication of WO2024095603A1 publication Critical patent/WO2024095603A1/fr

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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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac

Definitions

  • the present disclosure relates to a power supply device that supplies current to a light-emitting circuit for laser processing having at least one laser diode, and a laser processing device equipped with the same.
  • Patent Document 1 discloses a power supply device that supplies current to a light-emitting circuit for laser processing having at least one laser diode.
  • This power supply device includes an inverter circuit that has at least one switching element and generates a first AC voltage using power output from an AC power source by the switching operation of the switching element, an isolation transformer that converts the first AC voltage generated by the inverter circuit into a second AC voltage and outputs it, a rectifier circuit that supplies DC current to the light-emitting circuit based on the second AC voltage output by the isolation transformer, a current detection unit that detects the DC current, and a control means that controls the conduction rate, which is the proportion of the period during which voltage is supplied to the isolation transformer, so that the difference between the detection value of the current detection unit and a predetermined command current is small.
  • Patent Document 1 there is a demand for a power supply device such as that disclosed in Patent Document 1 that can be used to supply current to multiple types of light-emitting circuits that have different numbers of laser diodes connected in series.
  • the present disclosure has been made in consideration of these points, and its purpose is to make it possible to use a power supply device to supply current to multiple types of light-emitting circuits that have different numbers of laser diodes connected in series.
  • the present disclosure provides a power supply device for supplying current to a light-emitting circuit for laser processing having one laser diode or a plurality of laser diodes connected in series with each other, the power supply device comprising: an inverter circuit having at least one switching element, which generates a first AC voltage using power from an AC power source by the switching operation of the switching element; an isolation transformer which converts the first AC voltage generated by the inverter circuit into a second AC voltage and outputs it; a rectifier circuit which supplies a DC current to the light-emitting circuit based on the second AC voltage output by the isolation transformer; a current detection unit which detects the DC current; a drive control unit which controls the switching element of the inverter circuit based on a command voltage; and a command voltage generation unit which controls the command voltage based on the difference between the detection value of the current detection unit and a predetermined command current so that the difference is small, and which can select a response gain for the control of the command voltage from a plurality
  • the command voltage generating unit allows the command voltage generating unit to select a response gain suitable for the light-emitting circuit. For example, when the number of laser diodes in the light-emitting circuit is relatively large, the response gain for the command voltage control can be made relatively large, and when the number of laser diodes in the light-emitting circuit is relatively small, the response gain for the command voltage control can be made relatively small. This makes it easier to use the power supply device to supply current to multiple types of light-emitting circuits that have different numbers of laser diodes connected in series.
  • This disclosure makes it easier to use a power supply device to supply current to multiple types of light-emitting circuits that have different numbers of laser diodes connected in series.
  • FIG. 1 is a schematic diagram showing the configuration of a laser processing apparatus including a power supply device according to a first embodiment of the present disclosure.
  • FIG. 2 is a circuit diagram of the power supply device according to the first embodiment of the present disclosure.
  • FIG. 3 is a block diagram of the command voltage generating unit.
  • FIG. 4 is a block diagram of the scaler.
  • FIG. 5 is a view corresponding to FIG.
  • (Embodiment 1) 1 shows the configuration of a laser processing apparatus 100.
  • This laser processing apparatus 100 is used to perform cutting, welding, and the like of a workpiece W.
  • the laser processing apparatus 100 includes a galvano scanning type laser head 10, a controller 20, a light emitting circuit 30 for laser processing, a power supply device 40 according to the first embodiment of the present disclosure, and an optical fiber 90.
  • the galvano scanning laser head 10 irradiates the workpiece W with laser light LB emitted by the light emitting circuit 30 and passing through the optical fiber 90.
  • the controller 20 controls the irradiation position of the laser light LB by moving multiple galvanometer mirrors (not shown) built into the galvanometer scanning laser head 10.
  • the light-emitting circuit 30 includes one or more laser diodes 31 connected between the first and second nodes N1, N2.
  • FIG. 2 illustrates one laser diode 31, the number of laser diodes 31 is not limited to one, and multiple laser diodes 31 may be connected in series between the first and second nodes N1, N2.
  • the cathode side of the laser diode 31 faces the second node N2.
  • the laser light LB emitted by the light-emitting circuit 30 passes through the optical fiber 90 and is irradiated onto the workpiece W by the galvano scanning laser head 10.
  • the power supply device 40 supplies a DC current to the light-emitting circuit 30 between the first and second nodes N1 and N2.
  • the power supply device 40 has a first rectifier circuit 41, an inverter circuit 42, a capacitor 43, an isolation transformer 44, a second rectifier circuit 45, a reactor 46, a current detector 47, a voltage detector 48, and a control device 50.
  • the first rectifier circuit 41 converts the power supply voltage output from the AC power supply 200 into a DC voltage and outputs it from a pair of output nodes ON1 and ON2.
  • the first rectifier circuit 41 is configured, for example, as a diode bridge.
  • the inverter circuit 42 generates a first AC voltage according to the voltages of the output nodes ON1 and ON2 of the first rectifier circuit 41.
  • the inverter circuit 42 has a first upper arm switching element 42a and a first lower arm switching element 42b connected in series between a pair of output nodes ON1 and ON2 of the first rectifier circuit 41, and a second upper arm switching element 42c and a second lower arm switching element 42d connected in series between a pair of output nodes ON1 and ON2 of the first rectifier circuit 41.
  • a freewheel diode 42e is connected in parallel to each of the switching elements 42a to 42d.
  • the inverter circuit 42 generates a first AC voltage using the power output from the AC power source 200 by the switching operation of these switching elements 42a to 42d.
  • an inverter circuit 42 having four switching elements 42a to 42d is used, but an inverter circuit having a number of switching elements other than four may be used as long as it has at least one switching element.
  • the capacitor 43 is connected between the first rectifier circuit 41 and the inverter circuit 42 in parallel with the first rectifier circuit 41 and the inverter circuit 42.
  • the capacitor 43 is connected between a pair of output nodes ON1, ON2 of the first rectifier circuit 41.
  • the isolation transformer 44 converts the first AC voltage generated by the inverter circuit 42 into a second AC voltage and outputs it.
  • the isolation transformer 44 has a primary coil 44a and a secondary coil 44b.
  • the voltage of the primary coil 44a becomes the first AC voltage
  • the voltage of the secondary coil 44b becomes the second AC voltage.
  • the primary coil 44a is connected between the connection point of the first upper arm switching element 42a and the first lower arm switching element 42b and the connection point of the second upper arm switching element 42c and the second lower arm switching element 42d.
  • the second rectifier circuit 45 supplies a DC current to the laser diode 31 of the light-emitting circuit 30 based on the second AC voltage output by the isolation transformer 44.
  • the second rectifier circuit 45 has first and second diodes 45a and 45b.
  • the anode of the first diode 45a is connected to one end of the secondary coil 44b, and the anode of the second diode 45b is connected to the other end of the secondary coil 44b.
  • the cathodes of the first and second diodes 45a and 45b are connected to the first node N1.
  • the reactor 46 is connected between the middle of the secondary coil 44b and the second node N2.
  • the current detection unit 47 detects the supply current flowing through the laser diode 31 of the light emission circuit 30.
  • the voltage detection unit 48 detects the voltage of the light emission circuit 30.
  • the control device 50 has a drive control unit 51, a command voltage generation unit 52, and a voltage abnormality detection unit 55.
  • the drive control unit 51 controls the switching elements 42a to 42d of the inverter circuit 42 based on a command voltage Vc generated by a command voltage generation unit 52, which will be described later in detail.
  • the command voltage Vc corresponds to the duty ratio of the first AC voltage.
  • the duty ratio of the first AC voltage is the duty ratio of the period during which the inverter circuit 42 supplies a voltage to the isolation transformer 44, or in other words, the ratio of the period during which the first AC voltage is at a high level to the period of the first AC voltage.
  • the higher the command voltage Vc the higher the duty ratio of the first AC voltage.
  • the greater the number of laser diodes 31 connected in series between the first and second nodes N1 and N2 the higher the required duty ratio.
  • the drive control unit 51 is configured with a hardware circuit.
  • the command voltage generating unit 52 controls the command voltage Vc based on the difference between the detection value Im of the current detecting unit 47 and a predetermined command current Ic so that the difference becomes small.
  • the command voltage generating unit 52 can select the response gain of the control of the command voltage Vc from multiple types of response gains in response to the selection signal Ssel.
  • the command voltage generating unit 52 is configured as a hardware circuit. As shown in FIG. 3, the command voltage generating unit 52 has a conduction control unit 53 and a scale changing unit 54.
  • the conduction control unit 53 outputs a control voltage Vdif based on the difference between the detection value Im of the current detection unit and a predetermined command current Ic.
  • the conduction control unit 53 has a differential amplifier 531 and first and second inverting amplifiers 532 and 533.
  • the differential amplifier 531 amplifies the difference between the detection value Im of the current detection unit and a predetermined command current Ic, and outputs a first amplified signal.
  • the differential amplifier 531 has first to fourth resistors 531a to 531d and a first operational amplifier 531e.
  • One end of the first resistor 531a is connected to an input terminal to which the detection value Im is input, and the other end of the first resistor 531a is connected to an inverting input terminal of the first operational amplifier 531e.
  • One end of the second resistor 531b is connected to the inverting input terminal of the first operational amplifier 531e, and the other end of the second resistor 531b is connected to the output terminal of the first operational amplifier 531e.
  • One end of the third resistor 531c is connected to the input terminal to which the command current Ic is input, and the other end of the third resistor 531c is connected to the non-inverting input terminal of the first operational amplifier 531e.
  • One end of the fourth resistor 531d is connected to the non-inverting input terminal of the first operational amplifier 531e, and the other end of the fourth resistor 531d is grounded.
  • the output of the first operational amplifier 531e becomes the first amplified signal.
  • the first inverting amplifier 532 inverts the polarity of the first amplified signal, amplifies it, and integrates it to output a second amplified signal.
  • the first inverting amplifier 532 has fifth and sixth resistors 532a and 532b, a capacitor 532c, and a second operational amplifier 532d.
  • One end of the fifth resistor 532a is connected to the output of the first operational amplifier 531e, and the other end of the fifth resistor 532a is connected to the inverting input terminal of the second operational amplifier 532d.
  • the sixth resistor 532b and the capacitor 532c are connected in series between the inverting input terminal of the second operational amplifier 532d and the output terminal of the second operational amplifier 532d.
  • the non-inverting input terminal of the second operational amplifier 532d is grounded.
  • the output of the second operational amplifier 532d becomes the second amplified signal.
  • the second inverting amplifier 533 inverts the polarity of the second amplified signal, amplifies it, and outputs the control voltage Vdif.
  • the second inverting amplifier 533 has seventh and eighth resistors 533a and 533b, and a third operational amplifier 533c.
  • One end of the seventh resistor 533a is connected to the output of the second operational amplifier 532d, and the other end of the seventh resistor 533a is connected to the inverting input terminal of the third operational amplifier 533c.
  • One end of the eighth resistor 533b is connected to the inverting input terminal of the third operational amplifier 533c, and the other end of the eighth resistor 533b is connected to the output terminal of the third operational amplifier 533c.
  • the non-inverting input terminal of the third operational amplifier 533c is grounded.
  • the output of the third operational amplifier 533c becomes the control voltage Vdif.
  • the scale change unit 54 has first and second non-inverting amplifiers 541 and 542, and a multiplexer 543.
  • the first non-inverting amplifier 541 has ninth and tenth resistors 541a and 541b, and a fourth operational amplifier 541c.
  • One end of the ninth resistor 541a is connected to the inverting input terminal of the fourth operational amplifier 541c, and the other end of the ninth resistor 541a is grounded.
  • One end of the tenth resistor 541b is connected to the inverting input terminal of the fourth operational amplifier 541c, and the other end of the tenth resistor 541b is connected to the output terminal of the fourth operational amplifier 541c.
  • the control voltage Vdif based on the difference between the detection value Im of the current detection unit and the command current Ic is input to the non-inverting input terminal of the fourth operational amplifier 541c.
  • the fourth operational amplifier 541c amplifies the control voltage Vdif and outputs the first control amplified signal Sda1 from the output terminal.
  • the second non-inverting amplifier 542 has eleventh and twelfth resistors 542a, 542b and a fifth operational amplifier 542c.
  • One end of the eleventh resistor 542a is connected to the inverting input terminal of the fifth operational amplifier 542c, and the other end of the eleventh resistor 542a is grounded.
  • One end of the twelfth resistor 542b is connected to the inverting input terminal of the fifth operational amplifier 542c, and the other end of the twelfth resistor 542b is connected to the output terminal of the fifth operational amplifier 542c.
  • the control voltage Vdif is input to the non-inverting input terminal of the fifth operational amplifier 542c.
  • the fifth operational amplifier 542c amplifies the control voltage Vdif and outputs the second control amplified signal Sda2 from its output terminal.
  • the gains (amplification rates) of the first and second non-inverting amplifiers 541, 542 are different values greater than 1.
  • the gain of the first non-inverting amplifier 541 is set to a first gain greater than 1
  • the gain of the second non-inverting amplifier 542 is set to a second gain greater than the first gain.
  • the multiplexer 543 selects and outputs the command voltage Vc from the control voltage Vdif, the first control amplification signal Sda1, and the second control amplification signal Sda2 (multiple types of voltages based on the control voltage Vdif) according to the 2-bit selection signal Ssel.
  • the voltage abnormality detection unit 55 receives an input of a threshold update signal Sth.
  • the voltage abnormality detection unit 55 detects a voltage abnormality based on a voltage threshold corresponding to this threshold update signal Sth and the detection value Vm of the voltage detection unit 48.
  • the voltage abnormality detection unit 55 detects a voltage abnormality when the detection value Vm of the voltage detection unit 48 in a current supply state falls below the voltage threshold. If a voltage abnormality is detected, the laser diode 31 may be malfunctioning.
  • the voltage threshold is set to an appropriate value for malfunction detection by the threshold update signal Sth according to the number of laser diodes 31 connected between the first and second nodes N1, N2.
  • the function of the voltage abnormality detection unit 55 may be realized by having a computer execute a program (software).
  • the command voltage Vc is the control voltage Vdif
  • the response gains of the control of the command voltage Vc are different from one another. Therefore, the command voltage generating unit 52 can select the response gain of the control of the command voltage Vc from a plurality of response gains in response to the selection signal Ssel.
  • the first control amplified signal Sda1 is a first gain multiplied by the control voltage Vdif
  • the second control amplified signal Sda2 is a second gain multiplied by the control voltage Vdif. Therefore, the relationship of second control amplified signal Sda2>first control amplified signal Sda1>control voltage Vdif holds.
  • the power supply device 40 can be used to supply current to a light-emitting circuit 30 having an output of, for example, 400 W, 800 W, or 1200 W.
  • a selection signal Ssel is input to the command voltage generating unit 52 so that in a mode in which the output of the light-emitting circuit 30 is 400 W, the control voltage Vdif is selected as the command voltage Vc, in a mode in which the output of the light-emitting circuit 30 is 800 W, the first control amplification signal Sda1 is selected as the command voltage Vc, and in a mode in which the output of the light-emitting circuit 30 is 1200 W, the second control amplification signal Sda2 is selected as the command voltage Vc.
  • the first and second gains are set so that the ratio of the maximum possible values of the command voltage Vc in each mode, where the output of the light-emitting circuit 30 is 400 W, 800 W, and 1200 W, is the ratio of the output of the light-emitting circuit 30 in these three modes, i.e., 1:2:3.
  • the first gain is set to 2 and the second gain is set to 3.
  • the threshold update signal Sth is input to the voltage abnormality detection unit 55 so that the voltage threshold in the mode in which the output of the light-emitting circuit 30 is 800 W is smaller than the voltage threshold in the mode in which the output of the light-emitting circuit 30 is 1200 W, and the voltage threshold in the mode in which the output of the light-emitting circuit 30 is 400 W is smaller than the voltage threshold in the mode in which the output of the light-emitting circuit 30 is 800 W.
  • the maximum possible value of the control voltage Vdif does not change in response to the selection signal Ssel.
  • the maximum possible value of the first control amplified signal Sda1 is the first gain multiplied by the maximum possible value of the control voltage Vdif. In other words, the maximum possible value of the first control amplified signal Sda1 is greater than the maximum possible value of the control voltage Vdif.
  • the maximum possible value of the second control amplified signal Sda2 is the second gain multiplied by the maximum possible value of the control voltage Vdif. In other words, the maximum possible value of the second control amplified signal Sda2 is greater than the maximum possible value of the first control amplified signal Sda1 and the maximum possible value of the control voltage Vdif. In this way, the maximum possible value of the command voltage Vc switches in response to the selection signal Ssel.
  • the maximum possible value of the duty ratio of the first AC voltage also switches according to the selection signal Ssel. Specifically, in a mode in which the output of the light-emitting circuit 30 is 800 W, the maximum possible value of the duty ratio of the first AC voltage is lower than in a mode in which the output of the light-emitting circuit 30 is 1200 W. In a mode in which the output of the light-emitting circuit 30 is 400 W, the maximum possible value of the duty ratio of the first AC voltage is lower than in a mode in which the output of the light-emitting circuit 30 is 800 W.
  • the maximum value of the duty ratio of the first AC voltage can be used, and in a mode in which the output of the light-emitting circuit 30 is 800 W or 400 W, the duty ratio of the first AC voltage is limited to 2/3 or 1/3 or less of the maximum value.
  • the maximum possible value of the effective value of the first AC voltage also switches according to the selection signal Ssel.
  • the ratio of the maximum possible values of the command voltage Vc in the above three modes is the ratio of the output of the light-emitting circuit 30 in the three modes
  • the ratio of the maximum possible values of the duty ratio of the first AC voltage in the three modes is also the ratio of the output of the light-emitting circuit 30 in the three modes.
  • the control voltage generating unit 52 by inputting an appropriate selection signal Ssel to the control voltage generating unit 52, it is possible to cause the control voltage generating unit 52 to select a response gain suitable for the light-emitting circuit 30.
  • the response gain for the control of the command voltage Vc can be made relatively large, and when the number of laser diodes 31 in the light-emitting circuit 30 is relatively small, the response gain for the control of the command voltage Vc can be made relatively small. Therefore, the power supply device 40 can be easily used to supply current to multiple types of light-emitting circuits 30 having different numbers of laser diodes 31 connected in series.
  • the voltage threshold used for detecting a voltage abnormality by the voltage abnormality detection unit 55 can be set to a value suitable for the light-emitting circuit 30.
  • the voltage threshold can be set relatively high, and when the number of laser diodes 31 in the light-emitting circuit 30 is relatively small, the voltage threshold can be set relatively low. This makes it easier to use the power supply device 40 to supply current to multiple types of light-emitting circuits 30 that have different numbers of laser diodes 31 connected in series.
  • the drive control unit 51 and the command voltage generation unit 52 are configured as hardware circuits, the response of the operation of the inverter circuit 42 can be made faster and the time it takes for the supply current flowing through the light emission circuit 30 to approach the command current Ic can be shortened compared to when the functions of the drive control unit 51 and the command voltage generation unit 52 are realized by having a computer execute a program. Therefore, a high-speed current response can be realized, and by applying this to a galvano scanning type laser head 10 that can control the laser light LB at high speed, advanced laser processing can be realized.
  • (Embodiment 2) 5 is a diagram corresponding to FIG 4 of embodiment 2.
  • the scale change section 54 includes first to fourth voltage dividing resistors 544a to 544d and a selection circuit 545.
  • the control voltage Vdif is input to one end of the first voltage dividing resistor 544a.
  • the voltage at the other end of the first voltage dividing resistor 544a becomes the command voltage Vc.
  • One end of the second to fourth voltage dividing resistors 544b to 544d is connected to the other end of the first voltage dividing resistor 544a.
  • the selection circuit 545 selects 0 to 3 voltage dividing resistors 544b to 544d from the second to fourth voltage dividing resistors 544b to 544d (multiple voltage dividing resistors) in response to a selection signal Ssel to be used to obtain the command voltage Vc.
  • the selection circuit 545 has first to third switches 545a to 545c. The on/off of the first to third switches 545a to 545c is controlled by the 3-bit selection signal Ssel.
  • the first switch 545a is connected between the other end of the second voltage dividing resistor 544b and the reference potential point (ground).
  • the second switch 545b is connected between the other end of the third voltage dividing resistor 544c and the reference potential point (ground).
  • the third switch 545c is connected between the other end of the fourth voltage dividing resistor 544d and the reference potential point (ground).
  • the scale change unit 54 can obtain the command voltage Vc by dividing the control voltage Vdif using the first voltage dividing resistor 544a and the voltage dividing resistors 544b to 544d selected by the selection circuit 545 out of the first to fourth voltage dividing resistors 544a to 544d.
  • the second embodiment there is no need to provide an operational amplifier in the scale change unit 54, which reduces the manufacturing costs of the command voltage generation unit 52.
  • the response gain can be adjusted more flexibly by changing the combination of resistance values of the voltage-dividing resistors 544a to 544d.
  • the scale change unit 54 is provided with the fourth and fifth operational amplifiers 541c and 542c, but it is also possible to provide only the fourth operational amplifier 541c, and have the multiplexer 543 select one of the control voltage Vdif and the first control amplification signal Sda1 as the command voltage Vc.
  • the response gain of the command voltage Vc can be selected from three response gains, but it may be selected from two or four or more response gains.
  • the command voltage Vc can be selected from three, the control voltage Vdif, the first control amplification signal Sda1, and the second control amplification signal Sda2, but it may be selected from two, the control voltage Vdif and the first control amplification signal Sda1.
  • the command voltage Vc can be selected from two, the first control amplification signal Sda1 and the second control amplification signal Sda2.
  • the power supply device 40 may be adapted to supply current only to light-emitting circuits 30 with outputs of 400 W and 800 W.
  • the power supply device 40 may be adapted to supply current to light-emitting circuits 30 other than 400 W, 800 W, and 1200 W.
  • the power supply device and laser processing device equipped with the same disclosed herein can be easily used to supply current to multiple types of light-emitting circuits having different numbers of laser diodes connected in series, and are useful as a power supply device that supplies current to a light-emitting circuit for laser processing having at least one laser diode, and as a laser processing device equipped with the same.
  • Galvano scanning type laser head 30 Light emission circuit 31 Laser diode 40 Power supply device 42 Inverter circuits 42a to 42d Switching element 44 Isolation transformer 45 Second rectifier circuit 47 Current detection unit 48 Voltage detection unit 51 Drive control unit 52 Command voltage generation unit 55 Voltage abnormality detection unit 90 Optical fiber 100 Laser processing device 200 AC power supply 541c Fourth operational amplifier 542c Fifth operational amplifier 543 Multiplexer 544b Second voltage dividing resistor 544c Third voltage dividing resistor 544d Fourth voltage dividing resistor 545 Selection circuit LB Laser light W Work Im Detection value Ic Command current Vc Command voltage Vm Detection value Vdif Control voltage Ssel Selection signal

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

Un dispositif d'alimentation électrique 40 comprend : une unité de commande d'entraînement 51 qui commande les éléments de commutation 42a-42 d d'un circuit onduleur 42 sur la base d'une tension de commande Vc ; et une unité de génération de tension de commande 52 qui commande, sur la base de la différence entre une valeur de détection Im d'une unité de détection de courant 47 et un courant de commande prédéterminé Ic, la tension de commande Vc de telle sorte que la différence devienne minime et peut sélectionner un gain de réponse pour la commande de la tension de commande Vc parmi une pluralité de types de gains de réponse conformément à un signal de sélection Ssel.
PCT/JP2023/032404 2022-11-02 2023-09-05 Dispositif d'alimentation électrique et dispositif de traitement laser le comprenant WO2024095603A1 (fr)

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JP2022-176620 2022-11-02

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010130708A (ja) * 2008-11-25 2010-06-10 Mitsubishi Electric Corp スイッチング電源装置
JP2012152053A (ja) * 2011-01-20 2012-08-09 Murata Mfg Co Ltd スイッチング電源装置、及びｌｅｄ照明装置
WO2018193506A1 (fr) * 2017-04-17 2018-10-25 三菱電機株式会社 Dispositif de bloc d'alimentation de pilotage de diode laser et appareil d'usinage au laser
JP2021069242A (ja) * 2019-10-28 2021-04-30 三菱電機株式会社 電力変換装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010130708A (ja) * 2008-11-25 2010-06-10 Mitsubishi Electric Corp スイッチング電源装置
JP2012152053A (ja) * 2011-01-20 2012-08-09 Murata Mfg Co Ltd スイッチング電源装置、及びｌｅｄ照明装置
WO2018193506A1 (fr) * 2017-04-17 2018-10-25 三菱電機株式会社 Dispositif de bloc d'alimentation de pilotage de diode laser et appareil d'usinage au laser
JP2021069242A (ja) * 2019-10-28 2021-04-30 三菱電機株式会社 電力変換装置

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