WO2023160863A1 - Dispositif et procédé de coupure d'un courant de charge primaire d'un convertisseur indirect - Google Patents

Dispositif et procédé de coupure d'un courant de charge primaire d'un convertisseur indirect Download PDF

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Publication number
WO2023160863A1
WO2023160863A1 PCT/EP2022/086395 EP2022086395W WO2023160863A1 WO 2023160863 A1 WO2023160863 A1 WO 2023160863A1 EP 2022086395 W EP2022086395 W EP 2022086395W WO 2023160863 A1 WO2023160863 A1 WO 2023160863A1
Authority
WO
WIPO (PCT)
Prior art keywords
switching element
voltage
overload
converter
control
Prior art date
Application number
PCT/EP2022/086395
Other languages
German (de)
English (en)
Inventor
Lukas BURGSTALLER
Rostislav Rogov
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2023160863A1 publication Critical patent/WO2023160863A1/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
    • 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
    • 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
    • H02M3/325—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 using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • 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
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
    • 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
    • H02M3/325—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 using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523—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 using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop

Definitions

  • the invention relates to a device and a method for switching off a primary load current of a flyback converter. Furthermore, the invention relates to a drive train with a device, a vehicle with a drive train and a computer program and a computer-readable storage medium.
  • high-voltage contactors or electronic switches in the high-voltage supply lines are activated and opened in the prior art.
  • At least one electronic or mechanical switch is used for this, which can permanently separate the primary load current or the high-voltage voltage.
  • the switches must be opened reliably, preferably when defects occur in the circuit, for example a component defect that can lead to loss of insulation or a fire in a control unit, or which could lead to unwanted acceleration of a vehicle.
  • the switches must be opened quickly, because in the event of a fault, especially with high voltage, it can very quickly lead to subsequent defects and heat generation within milliseconds.
  • the switches are controlled by a circuit that can detect an overcurrent on the primary side by means of a current measurement in the primary path, a short circuit on the secondary side, or an overvoltage on the secondary side as a fault and controls and opens the switch depending on the detected fault.
  • This circuit also turns off the power supply for a drive within the flyback converter, preferably for a microcontroller. A separate power supply is therefore provided for this circuit for driving the switches, which continues to supply the circuit even in the event of a fault, so that the open state of the switch can be retained in the event of a fault.
  • the flyback converter includes a transformer. On the primary side, the flyback converter includes a two-pole input connection, with a positive connection pole and a negative connection pole, for connecting an energy source, a first primary winding of the transformer, a first switching element, a ground return line, a converter control for controlling the first switching element and a regulator voltage supply for supplying the converter control.
  • the first primary winding, the first switching element and the ground return line are connected in series between the positive terminal and the negative terminal.
  • the regulator power supply is connected between the positive terminal and the negative terminal, and the converter driver is connected to the ground return to ground.
  • the flyback converter On the secondary side, the flyback converter includes a two-pole output connection for connecting a load, a first secondary winding of the transformer, a first rectifier element and a capacitor.
  • the first secondary winding and the rectifying element are connected in series between the terminals of the output terminal.
  • the capacitor is connected between the terminal poles of the output terminal.
  • the device includes a second switching element, a shutdown control and an overload detection.
  • the second switching element is connected in series between the ground return line and the negative connection pole.
  • the overload detection is set up to output an overload signal when an overload is detected.
  • the switch-off control is set up to open the second switching element and thus the primary load current of the flyback converter or the input voltage when an overload signal from the overload detection is received switch off the flyback converter.
  • a device which is set up to switch off a primary load current of a flyback converter or an input voltage, preferably a high-voltage input voltage, of a flyback converter.
  • the voltage of a high-voltage input voltage is preferably significantly greater than 60 volts and is preferably between 250 volts and 1000 volts.
  • the primary load current or the input voltage is preferably provided by a connectable energy source, for example a battery, traction battery or a fuel cell.
  • the energy source is preferably used to supply a drive train of a vehicle.
  • the flyback converter includes a transformer which is set up to transfer the electrical energy present on the primary side to the secondary side.
  • the regulator voltage supply is preferably connected between the positive connection pole and the negative connection pole.
  • the regulator voltage supply preferably generates a supply voltage, preferably a low voltage of, for example, 5 volts or 15 volts, for supplying the converter control from the input voltage of a connected energy source present at these connection poles.
  • the converter control is used to control the first switching element. By means of alternating closing and opening of the first switching element, an AC voltage is generated at the first primary winding, which enables energy to be transmitted to the first secondary winding of the transformer. A load connected to the output connection poles on the secondary side is then supplied with electrical energy.
  • the device comprises a second switching element, which is activated and opened by means of a switch-off control as a function of an overload detection.
  • the switch-off control and/or the overload detection is preferably grounded via the negative connection pole. The further operation and the supply of the switch-off control and/or the overload detection is thus preferably made possible even when the second switching element is open.
  • a device for switching off a primary load current of a flyback converter or an input voltage of a flyback converter in which the regulator voltage supply of the flyback converter is advantageously maintained when the primary load current is switched off.
  • Advantage is the Reference ground or grounding of the controller voltage supply on the negative connection pole, preferably high-voltage negative potential.
  • the controller voltage supply can therefore be electrically connected to other electronic circuits such as ICs/ASICs/MCUs that are at the same potential without high-voltage isolators and can be controlled if diagnostics are required.
  • the grounding of the converter control and the electrical connection of the first switching element to the negative terminal pole are interrupted.
  • the power supply to the faulty circuit parts, preferably the converter control and the first switching element is advantageously prevented by switching off the primary load current.
  • the regulator voltage supply for supplying the converter control is set up to convert a voltage present at the two-pole input connection from a connected energy source into a supply voltage and to make this available to the converter control via a supply line, with the device also being supplied via the supply line using the supply voltage powered by the controller power supply.
  • the controller voltage supply converts a voltage present at the two-pole input connection from a connected energy source into a supply voltage.
  • the regulator voltage supply is preferably a voltage source that is supplied from the input voltage of the flyback converter and provides a supply voltage for the supply or for the operation of the converter control and the device by means of a voltage divider circuit or by means of a switched-mode power supply or another suitable circuit.
  • Both the converter control and the device are advantageously supplied with an operating voltage by means of the regulator voltage supply. Neither a further energy source nor a second voltage supply or voltage supply circuit is required for the operation of the device in addition to the converter control.
  • a third rectifier element is arranged between the converter control and the supply line in order to prevent a current flow from the converter control in the direction of the supply line.
  • the supply voltage is transmitted to the converter control by means of a supply line.
  • a rectifier element preferably a diode, is arranged between the converter drive and the supply line in the reverse direction, so that a current flow from the converter drive in the direction of the supply line is prevented.
  • a rectifier element is used whose dielectric strength corresponds to the voltage of the energy source that can be connected, which is applied to the rectifier element when the primary load current is switched off and there is a defect in the converter control and/or the first switching element.
  • a circuit is advantageously provided which, even in the case of a short-circuited or broken down first switching element, prevents a current flow from the first switching element via the converter control to the regulator voltage supply or to the device.
  • the converter control controls the first switching element in a clocked manner to generate a voltage, preferably an AC voltage, at the first secondary winding.
  • a control variant for the first switching element of the flyback converter is advantageously provided, by means of which energy is transmitted from electrical energy via the transformer from the primary side to the secondary side of the flyback converter.
  • the converter control comprises a second primary winding of the transformer and a second rectifier element connected in series for generating and determining a control voltage.
  • the converter control is also set up to determine the pulse duty factor for the clocked control of the first switching element as a function of the determined control voltage and to control the first switching element accordingly.
  • a control voltage which characterizes the operating state of the flyback converter, is generated and determined by means of a second primary winding and a rectifier element connected in series.
  • the converter control ascertains a pulse duty factor with which the first switching element is controlled in a clocked manner in order to minimize deviations between an actual operating state (eg voltage or voltage ripple) and a target operating state.
  • the second rectifier element is preferably a diode, which is preferably connected in the forward direction between the second primary winding and the converter control.
  • a circuit is advantageously provided which enables regulation of the flyback converter on the primary side. It is a primary regulated topology that gets its voltage feedback through an auxiliary winding, the second primary, and has no other ground connection to the load.
  • the second switching element is a normally-off switching element.
  • the second switching element is preferably an electronic switch, an IGBT, MOSFET, SiC semiconductor switch or an NMOS, which is switched off in its default or non-energized state and is switched on during regular operation of the flyback converter and is switched off when activated by the device.
  • the overload detection is implemented as a logic unit which outputs the overload signal as a function of a received signal.
  • the overload detection is reduced to a logic unit that receives a signal relating to an existing overload and then outputs the overload signal to activate the switch-off control.
  • a simple variant of the overload detection is advantageously provided.
  • the overload detection is designed as a current measuring device that is connected in series with the second switching element, with the overload detection being set up to output the overload signal when a current through the second switching element is determined that exceeds a specifiable first threshold value .
  • the overload detection includes a current measuring device which is connected in series with the second switching element, preferably between the second switching element and the negative terminal pole.
  • a further variant of an overload detection is advantageously provided, which can carry out the overload detection autonomously or independently without being dependent on external signals. If the current measuring device is connected between the second switching element and the negative terminal pole, the current measuring device advantageously continues to be operated even when the primary load current or the input voltage of the flyback converter is switched off.
  • the overload detection includes a logic unit that is set up to output an overload signal when a test voltage is determined that falls below a second specifiable threshold value and/or to output an overload signal when a test voltage is determined that exceeds a third specifiable threshold value.
  • the third rectifier element is preferably a diode, which is preferably connected in the forward direction between the third primary winding and the logic unit.
  • a test voltage is generated and determined by the overload detection unit, which characterizes the operating state of the flyback converter.
  • the magnitude of the test voltage is determined in the logic unit and compared with a second and a third threshold value that can be predetermined.
  • an overload signal is output both when the voltage drops below a second predefinable threshold value and when a third predefinable threshold value is exceeded.
  • the second threshold is preferably smaller than the third threshold, the second threshold preferably being 3-7 volts and the third threshold being 10-15 volts.
  • a primary or secondary short circuit is preferably closed, whereas a secondary-side overvoltage at the load is preferably closed when it is exceeded.
  • a further variant of an overload detection is advantageously provided, which can carry out the overload detection autonomously or independently without being dependent on external signals. More preferably, this overload detection responds when the second primary winding is defective or interrupted and the regulation of the flyback converter is thus disrupted.
  • the invention relates to a flyback converter with a device.
  • a flyback converter with a device for switching off a primary load current or for switching off the input voltage is advantageously provided.
  • the invention relates to a drive train of a vehicle with an inverter, an electric machine and/or an energy source, the drive train comprising at least one device.
  • a drive train of a vehicle is used to convert fossil or electrical energy from an energy source into mechanical energy that is used to propel the vehicle.
  • an electric drive train for example, the electric energy from an energy source is converted into an AC voltage by means of an inverter, with which an electric machine is operated.
  • Flyback converters of this type are preferably installed in an inverter or in a DC voltage converter of a drive train to supply control circuits. A primary load current or an input voltage of such a flyback converter can advantageously be switched off with the device.
  • the invention relates to a vehicle with a drive train as previously described.
  • a vehicle is advantageously provided which comprises at least one flyback converter whose primary load current or input voltage can advantageously be switched off by means of the device.
  • the invention relates to a method for switching off a primary load current or for switching off an input voltage of a flyback converter with a device described, which is set up to carry out the following steps of the method: detecting an overload;
  • a method for switching off a primary load current or for switching off an input voltage of the flyback converter in which the regulator voltage supply of the flyback converter is advantageously maintained when the primary load current is switched off. Furthermore, when the primary load current of the flyback converter is switched off, the grounding of the converter control and the electrical connection of the first switching element to the negative terminal pole are interrupted.
  • the invention relates to a computer program, comprising instructions which cause the device described to execute the method described.
  • the invention relates to a computer-readable medium, comprising instructions which, when executed by a described device, cause it to carry out the method.
  • figure 1 a schematic representation of a flyback converter known from the prior art
  • FIG. 2 shows a schematic representation of a first embodiment of a device for switching off a primary load current or for switching off an input voltage of a flyback converter
  • FIG. 3 shows a schematic representation of a second embodiment of a device for switching off a primary load current or for switching off an input voltage of a flyback converter
  • FIG. 4 shows a schematic representation of a third embodiment of a device for switching off a primary load current or for switching off an input voltage of a flyback converter
  • FIG. 5 shows a vehicle shown schematically with a drive train and a device
  • FIG. 6 shows a diagrammatically illustrated method for switching off a primary load current or for switching off an input voltage of a flyback converter using a device.
  • FIG. 1 shows a typical structure of a flyback converter 100.
  • the flyback converter 100 includes a transformer 110.
  • the flyback converter 100 includes a two-pole input connection 120, with a positive connection pole 122 and a negative connection pole 124, for connecting an energy source 126, a first primary winding 112 of the transformer, a first switching element 160, a converter drive 150 for driving the first switching element 160 and a regulator voltage supply 140 for supply
  • the flyback converter 100 preferably includes an input capacitor 130 which is connected in parallel with the regulator voltage supply 140 between the positive connection pole 122 and the negative connection pole 124 .
  • the flyback converter 100 comprises on the secondary side a two-pole output terminal 190 for connecting a load 128, a first secondary winding 114 of the transformer, a first rectifier element 170 and a capacitor 180, the first secondary winding 114 and the rectifier element being connected in series between the terminal poles of the output terminal 190.
  • the capacitor 180 is connected between the terminals of the output terminal 190 .
  • an input voltage present at the input connection is transmitted via the primary-side and secondary-side winding to the secondary side of the flyback converter and is made available at a load 128 that can be connected.
  • Flyback converter 100 is preferably regulated on the primary side.
  • the flyback converter 100 preferably comprises a second primary winding 116 of the transformer 110 and a second rectifier element 117 connected in series for generating and determining a control voltage UR.
  • Converter control 150 is preferably set up to determine the pulse duty factor for the clocked control of first switching element 160 as a function of determined control voltage UR and to control first switching element 160 accordingly, preferably for adapting the control voltage to a specifiable setpoint voltage.
  • Figure 2 shows a first embodiment of a device 200 for switching off a primary load current or for switching off an input voltage of a flyback converter 100.
  • the flyback converter 100 has the device 200, the device 200 having a second switching element 210, a Shutdown control 220 and an overload detection 230 includes.
  • a ground return line 164 is connected as the third element in the series connection of the first primary winding 112 and the first switching element 160 between the positive connection pole 122 and the negative connection pole 124, so that a series connection of the first primary winding 112, the first switching element 160 and the ground return line 164 between the positive connection pole 122 and the negative connection pole 124 is formed.
  • the second switching element 210 of the device is connected in series between the ground return line 164 and the negative terminal pole 124 .
  • the overload detector 230 is set up to output an overload signal S1 when an overload is detected, preferably to the switch-off control 220.
  • the overload detector 230 is preferably connected to the negative terminal pole 124 for grounding (not shown for reasons of clarity).
  • the shutdown control 220 is set up to open the second switching element 210 when receiving an overload signal S1 of the overload detection and thus to switch off the input voltage of the flyback converter 100 .
  • the switch-off control 220 is preferably connected to the negative connection pole 124 for grounding.
  • the regulator voltage supply 140 for supplying the converter control 150 is preferably set up to convert a voltage present at the two-pole input connection 120 from a connected energy source 126 into a supply voltage U2 and to make this available to the converter control 150 via a supply line 142 .
  • the device 200 is preferably also supplied via the supply line 142 by means of the supply voltage U2 from the regulator voltage supply 140 .
  • a third rectifier element 145 is preferably arranged between the converter control 150 and the supply line 142 to prevent a current flow from the converter control 150 in the direction of the supply line 142.
  • the converter control 150 preferably controls the first switching element 160 in a clocked manner to generate a voltage, preferably an AC voltage the first secondary winding 114.
  • the overload detection 230 is preferably implemented as a logic unit which outputs the overload signal S1 as a function of a received signal.
  • the overload detection preferably receives the signal as a function of a current measurement signal.
  • This signal is preferably transmitted via an isolator module, preferably a transformer or an optical transmitter, from a low-voltage assembly or the secondary side of the flyback converter for overload detection 230 .
  • overload detection 230 preferably outputs the overload signal S1 permanently or with a latch, which means that the second switching element 210 remains permanently open, and therefore there is preferably no state change, even if the error is no longer present or the supply voltage of the device is no longer present 200 collapses. This also applies to the exemplary embodiments illustrated in the following figures.
  • Figure 3 shows a second embodiment of a device 200 for switching off a primary load current or for switching off an input voltage of a flyback converter 100.
  • the device 200 has an overload detection 230, which is designed as a current measuring device is.
  • the current measuring device is connected in series with the second switching element 210, preferably between the second switching element and the negative terminal pole.
  • the overload detection 230 is set up to output the overload signal S1 when a current through the second switching element 210 is determined which exceeds a predeterminable first threshold value.
  • the overload detection 230 is preferably connected to the negative connection pole 124 for grounding (not shown for reasons of clarity).
  • Figure 4 shows a third embodiment of a device 200 for switching off a primary load current or for switching off an input voltage of a flyback converter 100.
  • the device 200 has an overload detection 230, which has a third Primary winding 118 of the transformer 110 and a series-connected third rectifier element 119 includes for generating a test voltage UT.
  • Overload detection 230 also includes a logic unit 232, which is set up to output an overload signal S1 when a test voltage UT is determined that falls below a second specifiable threshold value and/or to output an overload signal S1 when a test voltage UT is determined that exceeds a third specifiable threshold value.
  • the overload detection 230 is preferably connected to the negative connection pole 124 for grounding (not shown for reasons of clarity).
  • Switch-off control 220 preferably switches on second switching element 210 for startup, or when switching on, voltage converter 100 and/or device 200 .
  • the rectified test voltage UT rises to a positive value, which is preferably monitored by the logic unit 232 with regard to a second and a third specifiable threshold value.
  • Figure 5 shows a schematically illustrated vehicle 400 with four wheels 402 and a drive train 300.
  • the vehicle 400 is shown here only as an example with four wheels 402, the invention being equally applicable in any vehicle with any number of wheels on land, on water and can be used in the air.
  • the drive train 300 shown as an example includes at least one described device 200 in a flyback converter 100, wherein the drive train further includes an inverter 310, an electric machine 330 for driving the vehicle 400 and/or an energy source 126.
  • FIG. 6 shows a schematically illustrated flow chart for a method 500 for switching off a primary load current or for switching off an input voltage of a flyback converter 100 with a described device 200.
  • the method begins with step 505.
  • an overload is detected.
  • an overload signal S1 is output.
  • the second switching element 210 is opened depending on the received overload signal S1 and the input voltage of the flyback converter 100 is thus switched off.
  • the method ends.
  • An active short circuit is preferably switched by means of the inverter 310 following the method and the electric machine 330 or the drive train is thus transferred to a safe state.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un dispositif (200) pour couper un courant de charge primaire d'un convertisseur indirect (100), présentant une détection de surcharge (230), la détection de surcharge (230) étant conçue pour émettre un signal de surcharge (S1) lorsqu'une surcharge est détectée, et une commande de coupure (220) étant conçue pour ouvrir un second élément de commutation (210), lorsqu'un signal de surcharge (S1) de la détection de surcharge est reçu, et ainsi désactiver le courant de charge primaire du convertisseur indirect (100).
PCT/EP2022/086395 2022-02-23 2022-12-16 Dispositif et procédé de coupure d'un courant de charge primaire d'un convertisseur indirect WO2023160863A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022201889.3 2022-02-23
DE102022201889.3A DE102022201889A1 (de) 2022-02-23 2022-02-23 Vorrichtung und Verfahren zur Abschaltung eines Primärlastroms eines Sperrwandlers

Publications (1)

Publication Number Publication Date
WO2023160863A1 true WO2023160863A1 (fr) 2023-08-31

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PCT/EP2022/086395 WO2023160863A1 (fr) 2022-02-23 2022-12-16 Dispositif et procédé de coupure d'un courant de charge primaire d'un convertisseur indirect

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DE (1) DE102022201889A1 (fr)
WO (1) WO2023160863A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160141965A1 (en) * 2013-07-12 2016-05-19 Kabushiki Kaisha Toshiba Switching element driving power supply circuit
DE102021206671A1 (de) * 2021-06-28 2022-12-29 Lenze Swiss Ag DC/DC-Wandler und Frequenzumrichter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160141965A1 (en) * 2013-07-12 2016-05-19 Kabushiki Kaisha Toshiba Switching element driving power supply circuit
DE102021206671A1 (de) * 2021-06-28 2022-12-29 Lenze Swiss Ag DC/DC-Wandler und Frequenzumrichter

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