WO2019207627A1 - Dispositif d'alimentation électrique - Google Patents

Dispositif d'alimentation électrique Download PDF

Info

Publication number
WO2019207627A1
WO2019207627A1 PCT/JP2018/016458 JP2018016458W WO2019207627A1 WO 2019207627 A1 WO2019207627 A1 WO 2019207627A1 JP 2018016458 W JP2018016458 W JP 2018016458W WO 2019207627 A1 WO2019207627 A1 WO 2019207627A1
Authority
WO
WIPO (PCT)
Prior art keywords
inverter
operation mode
voltage
power supply
supply device
Prior art date
Application number
PCT/JP2018/016458
Other languages
English (en)
Japanese (ja)
Inventor
村上　哲
岩蕗　寛康
亮祐 小林
松原　真人
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2018/016458 priority Critical patent/WO2019207627A1/fr
Priority to JP2018536218A priority patent/JP6399273B1/ja
Publication of WO2019207627A1 publication Critical patent/WO2019207627A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/131—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
    • H01S3/134—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the active medium, e.g. by controlling the processes or apparatus for excitation in gas lasers
    • 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

Definitions

  • the present invention relates to a power supply device that supplies a high frequency voltage to a load, and more particularly to a power supply device that supplies a high frequency voltage to a discharge electrode and discharges it to generate laser light.
  • the primary side is connected in parallel using a plurality of transformers, and the secondary side is connected in series.
  • the structure is taken (for example, refer patent document 1).
  • the boost converter which is the input voltage of the inverter, is adjusted so that the laser is not oscillated and discharge is maintained, and the inverter is intermittently operated by group pulse operation to flow load current.
  • a technique for reducing the switching loss of a boost converter is disclosed (see, for example, Patent Document 2).
  • JP 2003-125586 A Japanese Patent Laid-Open No. 2003-243749
  • the power supply device disclosed in Patent Document 1 has an idea of adjusting the secondary side voltage of the transformer that is a voltage source of the discharge electrode that is a load, such as laser oscillation and laser non-oscillation and maintaining discharge. Not shown. Further, in the configuration of the power supply device disclosed in Patent Document 2, the boosting converter, which is the input voltage of the inverter, is adjusted so that the discharge electrode is adjusted so as to maintain discharge while the laser does not oscillate, and the group pulse operation is performed. Although a technique for reducing the switching loss of the inverter by performing the intermittent operation is shown, the idea of reducing the switching loss of the inverter that occurs when the group pulse is intermittently operated is not shown.
  • a power supply for a laser processing machine optimizes the intensity and energy amount of a laser according to the material of the workpiece in order to perform fine processing efficiently and at high speed on the workpiece such as a printed circuit board.
  • the peak value of the discharge power of the laser pulse it is necessary to control the peak value of the discharge power of the laser pulse, the repetition pulse frequency of the laser pulse, the pulse width of the laser pulse output, etc.
  • the repetition frequency of the laser pulse It is necessary to increase the repetition frequency of the group pulse.
  • the loss of the semiconductor constituting the inverter is a problem, and the repetition frequency of the group pulse cannot be increased.
  • the present invention has been made to solve the above-described problems, and in a laser non-oscillation state, a plurality of inverters are selectively operated to continuously flow a resonance current maintained by discharge.
  • An object of the present invention is to provide a power supply device that can reduce switching loss when an inverter is turned on during group pulse operation during laser oscillation.
  • the power supply device is connected to an AC power source, converts an AC voltage input from the AC power source into a DC voltage, and is connected in parallel to the AC / DC conversion unit.
  • a plurality of inverter circuits that convert the DC voltage converted by the DC / DC converter into an AC voltage, and a plurality of transformers in which each of the primary windings is connected to the plurality of inverter circuits, and each of the secondary windings is connected in series.
  • a resonance circuit having one end connected to the secondary windings of a plurality of transformers connected in series and the other end connected to a load, and a control circuit that controls the plurality of inverter circuits.
  • the inverter when the laser is not oscillating, the inverter is selectively operated, and the resonance current is continuously supplied to the inverter group, so that the semiconductor switching loss can be reduced.
  • FIG. 1 is a configuration diagram of a power supply device according to Embodiment 1 of the present invention.
  • the same or equivalent components are denoted by the same reference numerals.
  • ⁇ when there are a plurality of identical or equivalent components such as an inverter circuit, “ ⁇ ” and a number are added and distinguished as in the inverter circuit 23-1. In the case where the components are not distinguished or collectively referred to, description will be made by omitting “ ⁇ ” and the numeral as in the inverter circuit 23, for example.
  • the power supply device 2 includes an AC / DC conversion unit 20, a link capacitor 21, an inverter group 22, a transformer group 24, and a resonance circuit 26, and one end of the AC / DC conversion unit 20 is connected to the AC power source 1 to resonate. One end of the circuit 26 is connected to the discharge electrode 3.
  • the AC / DC converter 20 may be any circuit as long as it can convert an AC voltage into a DC voltage, but may be an AC / DC converter including four switching elements configured in a full bridge type, for example.
  • the link capacitor 21 is connected to a DC bus connecting the DC side terminal of the AC / DC converter 20 and an inverter group 22 described later. One end of the link capacitor 21 is connected to the positive side of the DC bus and the other end. Is connected to the negative electrode side of the DC bus.
  • the inverter group 22 has a plurality of inverter circuits 23-1 to 23-n, and the inverter circuits 23-1 to 23-n are connected in parallel to the AC / DC converter 20. That is, the DC terminals of the inverter circuits 23-1 to 23-n are connected to the DC bus.
  • n is an integer of 2 or more.
  • Each of the plurality of inverter circuits 23-1 to 23-n can transmit power in both directions, and converts the DC power output from the AC / DC conversion unit 20 through the link capacitor 21 into AC power to convert the transformer group 24 In addition, the AC power output from the transformer group 24 can be converted to DC power and output to the AC / DC converter 20.
  • FIG. 2 shows a configuration example of one unit of the inverter circuits 23-1 to 23 -n constituting the inverter group 22.
  • the inverter circuit 23 shown in FIG. 2 (a) includes four switching elements 23a to 23d connected in a full bridge type and a DC capacitor 23e, and two sets of switching elements (switching elements 23a) And 23d and switching elements 23b and 23c) are alternately turned on and off to convert a DC voltage and an AC voltage.
  • Each of the switching elements 23a to 23d constituting the inverter circuit 23 includes a diode connected in antiparallel. This diode may be a diode built in the switching element, or may be a diode externally attached to each switching element.
  • an inverter circuit having two switching elements 23a to 23b connected in a half-bridge type and DC capacitors 23e to 23g may be used.
  • the switching elements 23a to 23b of the inverter circuit shown in FIG. 2B include diodes connected in antiparallel.
  • the inverter circuit 23 may be any circuit as long as it has a switching element and can convert alternating current and direct current in both directions.
  • the transformer group 24 includes a plurality of transformers 25-1 to 25-n, and each of the transformers 25-1 to 25-n includes a primary winding and a secondary winding that can be magnetically coupled to each other.
  • the primary windings of the transformers 25-1 to 25-n are connected to the AC side terminals of the inverter circuits 23-1 to 23-n, respectively.
  • the secondary windings of the transformers 25-1 to 25-n are connected in series. That is, one terminal of the secondary winding of the transformer 25-1 becomes an output terminal of the transformer group 24, and the other terminal of the secondary winding of the transformer 25-1 and one of the secondary windings of the transformer 25-2.
  • One terminal of the secondary winding of ⁇ n is connected to each other. Further, the other terminal of the transformer 25-n is the other output terminal.
  • the resonance circuit 26 includes a resonance coil 26a and a resonance coil 26b.
  • the resonance coil 26 a has one end connected to the output terminal of the transformer group 24 and the other end connected to the discharge electrode 3.
  • the resonance coil 26b has one end connected to the transformer 25-n and the other end connected to the discharge electrode 3.
  • the values of the resonance coil 26 a and the resonance coil 26 b are set so that they can resonate together with the capacitance component of the discharge electrode 3 when the discharge electrode 3 is discharged.
  • the resonance coil 26a or Any one of the resonance coils 26b may be used.
  • the resonance coil may be configured by the leakage inductance of the transformer group 24 and may not be physically provided.
  • the control circuit 27 transmits a control signal 28 to each of the plurality of inverter circuits 23 to control the plurality of inverter circuits 23. That is, by transmitting an on / off signal of a switching element included in the inverter circuit 23, each inverter circuit 23 is turned on or off, and the voltage applied to the discharge electrode 3 is controlled.
  • the off state of the inverter circuits 23-1 to 23-n refers to a state in which the power transmission direction of the corresponding transformers 25-1 to 25-n flows from the secondary winding to the primary winding.
  • the inverter circuit shown in FIG. 2A is an upper arm reflux or lower arm switching in which the upper arm switching elements 23a and 23c are turned on. It also includes a lower arm reflux state in which the lower arms of the elements 23b and 23d are turned on.
  • the discharge electrode 3 is connected to the transformer group 24 via the resonance circuit 26, and discharges between the electrodes when a high frequency voltage is supplied, and laser oscillation occurs when a high voltage of a certain level or more is applied. Further, the discharge electrode 3 has a capacitance component and a resistance component, and resonates with the resonance circuit 26 at the time of discharge, so that a resonance current flows through the discharge electrode 3.
  • FIG. 3 illustrates the circuit operation of the inverter group 22 that causes the discharge electrode 3 to be in a laser oscillation or laser non-oscillation and discharge maintaining state using the power supply device according to the present embodiment.
  • the operation when the number of inverter circuits constituting the inverter group 22 is four as shown in FIG. 3, that is, when n is four in FIG. 1 will be described.
  • the midpoint of the secondary windings connected in series of the transformer group 24 is grounded. That is, the connection point between the secondary winding of the transformer 25-2 and the secondary winding of the transformer 25-3 is grounded.
  • the inverter circuit 23 is a full bridge type bidirectional inverter circuit shown in FIG.
  • the input voltage of the inverter circuits 23-1 to 23-4 is V in
  • the transformer ratio of each of the transformers 25-1 to 25-4 is 1: 1
  • the transformer output voltage required for laser oscillation at the discharge electrode 3 is 4V in
  • the transformer output voltage that allows the resonance current necessary for non-laser oscillation and discharge to be maintained at the discharge electrode 3 and zero voltage switching of the inverter circuits 23-1 to 4 to flow is 2V in .
  • the control circuit includes a first operation mode in which a plurality of inverter circuits 23 are turned on and a voltage is applied to the discharge electrode 3 that is a load, and a part of the plurality of inverter circuits 23. Control is performed using the second operation mode in which fewer inverter circuits are turned on than in the first operation mode. That is, during laser oscillation, all the inverter circuits 23-1 to 23-4 are turned on so that the voltage to the discharge electrode 3 is increased (first operation mode, FIG. 3A).
  • the discharge electrode 3 when the discharge electrode 3 is in the laser non-oscillation state and the discharge is maintained, the number of inverter circuits to be operated is decreased and at least one inverter circuit 23 is operated (second operation mode).
  • the two inverter circuits 23 are operated.
  • the voltage of the transformer group 24 in the second operation mode, is generated so as to be symmetric with respect to the ground reference. That is, by turning off inverter circuit 23-1 and inverter circuit 23-4 and turning on inverter circuit 23-2 and inverter circuit 23-3, the voltage generated at the output of transformer group 5 can be varied and discharged. The resonance current continues to flow while maintaining the discharge of the electrode 7 (FIG. 3B).
  • the voltage applied to the discharge electrode 3 is fixed with respect to the ground, and a symmetrical voltage is applied, so that unnecessary discharge and leakage current are less likely to occur.
  • the inverter circuit 23 does not need to be turned on or off with respect to the ground reference, and the inverter circuit 23 may be turned on or off asymmetrically with respect to the ground reference according to the voltage applied to the discharge electrode 3.
  • turning off the inverter circuit 23 refers to a state in which the power transmission direction of the transformers 25-1 to 25-n flows from the secondary winding to the primary winding, and all the switching elements in FIG.
  • the upper arm reflux in which the upper arm switching elements 23a and 23c are turned on, or the lower arm reflux in which the lower arms of the lower arm switching elements 23b and 23d are turned on In addition to the OFF state, in FIG. 2A, the upper arm reflux in which the upper arm switching elements 23a and 23c are turned on, or the lower arm reflux in which the lower arms of the lower arm switching elements 23b and 23d are turned on. Including the state that is. Even when the switching element of the inverter circuit is in the off state, the resonance current input from the transformer group 24 via the built-in diode provided in the inverter circuit 23 is output to the link capacitor 21 side.
  • the inverter circuit 23 when the inverter circuit 23 is turned on, the DC voltage supplied from the AC power supply 1 via the AC / DC converter 20 is converted into an AC voltage by ON / OFF control of the switching elements constituting the inverter circuit 23. , To supply to the transformer 25-2. At this time, any control may be used for on / off control of the switching elements constituting the inverter circuit, for example, PWM (Pulse Width Modulation) control may be used.
  • PWM Pulse Width Modulation
  • FIG. 4 is a diagram showing the relationship between the state of the inverter circuit 23, the output voltage of the transformer group 24, and the secondary current of the transformer group 24.
  • the laser oscillation operation period ((a) in FIG. 4)
  • all of the inverter circuits 23-1 to 23-4 are turned on, and the output voltage from the transformer group 24 is 4V in .
  • the period in which the laser is not oscillated and the discharge is maintained ((b) in FIG. 4)
  • only the inverter circuits 23-2 and 3 are turned on, so that the output voltage from the transformer group 24 is 2V in .
  • the resonance current continuously flows through the discharge electrode 3, the inverter group 22, and the like.
  • the inverter circuits 23-1 and 4 which have been turned off are turned on, whereby the inverter circuit All of 23-1 to 23-4 are turned on.
  • the resonance current continues to flow, when the inverter circuits 23-1 and 23 are turned on, zero voltage switching is performed and switching loss can be reduced. For this reason, even if laser oscillation / non-oscillation is repeated, the switching loss at the time of turn-on of the inverter group 22 can be reduced, and the repetition frequency of laser oscillation can be increased, so that the processing time can be increased. Become.
  • the current flowing through the discharge electrode 3 can be regenerated to the link capacitor 21 via the inverter circuits 23-1 and 4 which are turned off when the laser is not oscillated and the discharge is maintained.
  • the inverter circuits 23-1 and 4 which are turned off when the laser is not oscillated and the discharge is maintained.
  • FIG. 5 is a diagram for explaining the phase relationship between the voltage and current of the inverter circuit 23.
  • the conventional power supply device when the discharge electrode is in a laser non-oscillation state, all the inverter circuits are turned off, so that the output voltage on the secondary side of the transformer is 0 and the current flowing through the inverter circuit is also 0. For this reason, when the discharge electrode is switched to the laser oscillation state and the switching element constituting each inverter circuit starts an on / off operation, hard switching is performed and switching loss cannot be suppressed.
  • the inverter circuits 23-2 and 3 are on, and the output of the transformer group 24 is discharged. cause the voltage 2V in to maintain the, and the resonance current to the inverter circuits 23-1 through 4 soft switched flows to the discharge electrode 3 and the inverter circuits 23-1 to 4.
  • This current is a resonance current when the resonance coils 26a and 26b and the discharge electrode 3 are operated at a frequency higher than the resonance frequency determined by the capacity when the discharge electrode 3 is maintaining the discharge, and is a leading phase with respect to the voltage of the inverter circuit 23. It has become a relationship.
  • FIG. 6 shows that when the inverter group 22 is turned on, soft switching is performed, and that the same current as that of the discharge electrode 3 is regenerated by the inverter circuit 23 being turned off.
  • SW1 to SW4 are used to show the current flow.
  • FIG. 6A shows the relationship between the gate signal of each switching element (SW 1 to SW 4) of the inverter circuit 23, the drain-source voltage of each switching element, and the current flowing through the transformer 25.
  • FIG. 6B is a diagram showing the switching state and current flow of the inverter group 22 at the operating point a shown in FIG. In the power supply device shown in the present embodiment, the operations of inverter circuits 23-3 and 4 are omitted because they are symmetrical with respect to ground.
  • the operating point a corresponds to SW1 and SW4 of the inverter circuit 23-2 when the discharge electrode 3 is in a laser non-oscillation and discharge maintaining state (second operation mode, inverter circuit 23-1: OFF, inverter circuit 23-2: ON). Is the timing when is turned on. A negative current flows through the transformer 25, and power is regenerated in the link capacitor 21 via the built-in diodes of SW1 and SW4 of the inverter circuit 23-2. At this time, SW1 and SW4 of the inverter circuit 23-2 are turned on in a state where the built-in diode is turned on, so that it becomes a zero voltage switch, which indicates that switching loss can be reduced.
  • the operating point b is the timing at which SW2 and SW3 of the inverter circuit 23-2 are turned on when the discharge electrode 3 is in a laser non-oscillation and discharge maintenance state (inverter circuit 23-1: off, inverter circuit 23-2: on). It is. A positive current flows through the transformer 25, and power is regenerated to the link capacitor 21 via the built-in diodes of SW2 and SW3 of the inverter circuit 23-2. At this time, since SW2 and SW3 of the inverter circuit 23-2 are turned on in a state where the built-in diode is turned on, it becomes a zero voltage switch, and switching loss can be reduced as in the case of the operating point a.
  • the inverter circuit 23-2 is turned on and the inverter circuit 23-1 is turned off has been described here, the same effect can be obtained in the opposite case.
  • an inverter circuit 23 different from the inverter circuit 23 that was turned on in the previous second operation mode may be turned on.
  • the inverter circuits 23-1 and 4 are turned off in a certain laser non-oscillation and discharge sustaining state, and the inverter circuits 23-2 and 3 are turned off at the timing when the next laser non-oscillation and discharge sustaining state are established.
  • ON / OFF of each inverter circuit 23 is repeated alternately, and the loss of the inverter circuit 23 can be distributed.
  • FIG. 7 is a diagram schematically showing a method for adjusting the output voltage of the power supply device 2, that is, the voltage applied to the discharge electrode 3.
  • the discharge electrode voltage can be adjusted by controlling the number of inverter circuits 23 to be operated among the inverter circuits 23 constituting the inverter group 22.
  • the maximum voltage can be obtained by turning on the n inverter circuits 23 among the n inverter circuits 23, and in order to lower the discharge electrode voltage, the inverter circuit 23 to be operated is operated.
  • the discharge electrode voltage can be lowered by reducing the number (four in FIG. 6).
  • FIG. 8 is a diagram schematically showing a method for adjusting the average laser output during laser oscillation of the discharge electrode 3.
  • the average laser output can be adjusted by adjusting the ON period of the inverter circuit 23. That is, in the laser oscillation state of the discharge electrode 3, the laser output can be increased by increasing the ON period of each inverter circuit 23, and conversely, the laser output can be decreased by shortening the ON period of each inverter circuit 23. can do.
  • FIG. 9 shows the operation state by the applied voltage to the discharge electrode 3, and when the applied voltage is increased, the discharge is stopped and the laser is not oscillated and the discharge is maintained. From this laser non-oscillation laser non-oscillation and discharge sustaining state, when the voltage is further increased, the laser oscillation state is indicated. In addition, if the discharge is maintained, the resonance frequency remains almost unchanged between the time of laser oscillation and the time of laser non-oscillation.
  • each of them is connected in parallel, and a plurality of inverter circuits that convert a DC voltage into an AC voltage and each of the primary windings are connected to a plurality of inverter circuits,
  • a plurality of isolation transformers each having a secondary winding connected in series, a resonance circuit having one end connected to a secondary winding of each of the plurality of isolation transformers connected in series and the other end connected to a load, and an inverter circuit
  • a control circuit for controlling, and among the plurality of inverter circuits, the number of inverter circuits to be operated is changed to control the voltage applied to the load, and the load is a discharge electrode that emits laser light.
  • the switching electrode can reduce switching loss when the laser is not oscillating.
  • Embodiment 2 In the power supply device shown in the first embodiment, the output voltage output to the load is controlled by changing the number of inverter circuits 23 to be turned on among the plurality of inverter circuits 23 constituting the inverter group 22. In the power supply device shown in the second embodiment, in addition to changing the number of inverter circuits 23 to be turned on, the output voltage output to the load is controlled by shifting the operation phase of the inverter circuit to be turned on.
  • the power supply device shown in the second embodiment has the same configuration as the power supply device shown in FIG. 1 described in the first embodiment, and a description thereof will be omitted.
  • the plurality of inverter circuits 23 are controlled so that the output voltages of the inverter circuits 23 to be turned on are in phase in the first operation mode and the second operation mode.
  • the phase of the output voltage of the inverter circuit 23 that is turned on is adjusted by shifting it with the control circuit 27, and the variable range of the voltage applied to the discharge electrode 3 is widened.
  • Fig. 9 shows that when the phase of the inverter is shifted, the applied voltage of the discharge electrode decreases and can be adjusted.
  • the phase shift between the ON inverter circuits 23 (INV1 to 3) is increased in FIG. 9A
  • the phase shift between the ON inverter circuits 23 (INV1 to 3) is reduced in FIG. 9A.
  • the output voltage can be lowered by increasing the phase of the output voltage of the plurality of inverter circuits 23 to be turned on, and the output voltage of the plurality of inverter circuits 23 can be reduced.
  • the total output voltage output from the inverter circuit can be adjusted. That is, by adjusting the phase of each inverter circuit 23, the variable range of the applied voltage to the discharge electrode 3 can be widened or finely adjusted.
  • the power supply device shown in Embodiment 2 has the above-described configuration and operation, when the load is a discharge electrode that emits laser light as in the case of Embodiment 1, the discharge electrode is not laser-oscillated. Switching loss at the time can be reduced. Further, by adjusting the phase of the plurality of inverter circuits that are turned on, it is possible to obtain an effect that the variable range of the applied voltage to the discharge electrode is widened or that the applied voltage can be finely adjusted.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Lasers (AREA)

Abstract

Un dispositif d'alimentation électrique est caractérisé en ce qu'il comprend : un convertisseur c.a.-c.c. qui convertit une tension alternative entrée à partir d'une alimentation en c.a. en une tension continue ; une pluralité de circuits onduleurs qui sont connectés en parallèle au convertisseur c.a.-c.c., les circuits onduleurs convertissant la tension continue convertie par le convertisseur c.a.-c.c. en une tension alternative ; une pluralité de transformateurs pour lesquels des enroulements primaires individuels sont connectés à la pluralité de circuits onduleurs, et des enroulements secondaires individuels sont connectés en série ; un circuit de résonance dont une extrémité est connectée aux enroulements secondaires connectés en série de la pluralité de transformateurs, et l'autre extrémité est connectée à une charge ; et un circuit de commande qui commande la pluralité de circuits onduleurs, le circuit de commande effectuant une commande à l'aide d'un premier mode de fonctionnement qui met sous tension la pluralité de circuits onduleurs et applique une tension à la charge, et d'un second mode de fonctionnement qui met sous tension certains circuits parmi la pluralité de circuits onduleurs dans une quantité qui est inférieure au nombre de circuits onduleurs mis sous tension dans le premier mode de fonctionnement. Le dispositif d'alimentation électrique permet de réduire la perte de commutation dans un semi-conducteur.
PCT/JP2018/016458 2018-04-23 2018-04-23 Dispositif d'alimentation électrique WO2019207627A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2018/016458 WO2019207627A1 (fr) 2018-04-23 2018-04-23 Dispositif d'alimentation électrique
JP2018536218A JP6399273B1 (ja) 2018-04-23 2018-04-23 電源装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/016458 WO2019207627A1 (fr) 2018-04-23 2018-04-23 Dispositif d'alimentation électrique

Publications (1)

Publication Number Publication Date
WO2019207627A1 true WO2019207627A1 (fr) 2019-10-31

Family

ID=63708635

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/016458 WO2019207627A1 (fr) 2018-04-23 2018-04-23 Dispositif d'alimentation électrique

Country Status (2)

Country Link
JP (1) JP6399273B1 (fr)
WO (1) WO2019207627A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01134398U (fr) * 1988-03-08 1989-09-13
JPH0870581A (ja) * 1994-08-30 1996-03-12 Railway Technical Res Inst 高出力インバータ装置
JP2003125586A (ja) * 2001-10-15 2003-04-25 Amada Eng Center Co Ltd プラズマ発生用電源装置
JP2008005575A (ja) * 2006-06-20 2008-01-10 Sanken Electric Co Ltd Ｄｃ／ａｃインバータ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01134398U (fr) * 1988-03-08 1989-09-13
JPH0870581A (ja) * 1994-08-30 1996-03-12 Railway Technical Res Inst 高出力インバータ装置
JP2003125586A (ja) * 2001-10-15 2003-04-25 Amada Eng Center Co Ltd プラズマ発生用電源装置
JP2008005575A (ja) * 2006-06-20 2008-01-10 Sanken Electric Co Ltd Ｄｃ／ａｃインバータ

Also Published As

Publication number Publication date
JP6399273B1 (ja) 2018-10-03
JPWO2019207627A1 (ja) 2020-04-30

Similar Documents

Publication Publication Date Title
JP5063362B2 (ja) Ｘ線管用のモジュール電源及びその方法
US7088594B2 (en) Resonant converter and control method thereof
US7312584B2 (en) Plasma-generation power-supply device
US5140510A (en) Constant frequency power converter
US6737916B2 (en) RF amplifier system having improved power supply
JPH10229676A (ja) スイッチング電源
KR940004928A (ko) 인버터 장치
JP5550648B2 (ja) 高周波電源装置
EP1169772B1 (fr) Bloc d'alimentation comprenant un inverseur
JPH11285249A (ja) スイッチング電源
JP6399273B1 (ja) 電源装置
EP3086625B1 (fr) Convertisseur de commutation pour l'entraînement de tensions de charge variable
EP0477587A1 (fr) Appareil d'alimentation
US20080037299A1 (en) Method for driving dc-ac converter
HU205518B (en) Circuit arrangeent for supplying light source
WO2011087106A1 (fr) Convertisseur continu-alternatif, dispositif de chauffage à induction, dispositif de commande de moteur et procédé de conversion continu- alternatif
JP2006210279A (ja) 放電灯駆動装置
US6798676B2 (en) Inverter for changing direct current to alternating current
CN114825975A (zh) 电源供应器及驱动方法
JP4430188B2 (ja) 共振型電源装置
KR20150109523A (ko) 전원 공급 장치
US20240014748A1 (en) Load independent voltage and current gain resonant topologies
RU2079164C1 (ru) Резонансный источник питания
EP3968508A1 (fr) Modulation de fréquence pour commander un convertisseur résonant commuté
JPH04212294A (ja) 電源装置

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018536218

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18916905

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18916905

Country of ref document: EP

Kind code of ref document: A1