WO2021175204A1 - Convertisseur forcé à point neutre actif à trois niveaux et procédé de fonctionnement associé et dispositif de commande - Google Patents

Convertisseur forcé à point neutre actif à trois niveaux et procédé de fonctionnement associé et dispositif de commande Download PDF

Info

Publication number
WO2021175204A1
WO2021175204A1 PCT/CN2021/078630 CN2021078630W WO2021175204A1 WO 2021175204 A1 WO2021175204 A1 WO 2021175204A1 CN 2021078630 W CN2021078630 W CN 2021078630W WO 2021175204 A1 WO2021175204 A1 WO 2021175204A1
Authority
WO
WIPO (PCT)
Prior art keywords
state
bridge arm
switch
level
switching
Prior art date
Application number
PCT/CN2021/078630
Other languages
English (en)
Inventor
Chengrui DU
Chaoqun LIU
Zhiqiang Zhang
Baisheng CHEN
Shenjian ZOU
Original Assignee
Shenzhen Kstar Science & Technology Co., Ltd.
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 Shenzhen Kstar Science & Technology Co., Ltd. filed Critical Shenzhen Kstar Science & Technology Co., Ltd.
Publication of WO2021175204A1 publication Critical patent/WO2021175204A1/fr

Links

Images

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
    • 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
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/487—Neutral point clamped inverters
    • 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

Definitions

  • the present disclosure generally relates to the field of electrical energy conversion, and in particular to a three-level active neutral-point-clamped (3L-ANPC) converter, an operating method and a control device.
  • 3L-ANPC three-level active neutral-point-clamped
  • multilevel inverters have been widely used in various electrical energy conversion fields, such as photovoltaic power generation system, motor drive system, and flexible alternative current transmission system (FACTS) .
  • FACTS flexible alternative current transmission system
  • the multilevel inverters have the advantages of low harmonic content in output voltage, low voltage stress of power switching, and low EMI noise.
  • Traditional multilevel converters may be divided into three types: neutral-point-clamped multilevel converters, flying capacitor multilevel (FCML) converters and cascaded H-bridge multilevel converters. Since the topology and control strategy of the neutral-point-clamped multilevel converters are relatively simple, the neutral-point-clamped multilevel converters are most widely used.
  • the active neutral-point-clamped multilevel converters are an improved topology based on the traditional neutral-point-clamped multilevel converters.
  • active switching components are in anti-parallel connection at both ends of the clamped diode of the traditional three-level neutral-point-clamped circuit. Therefore, compared with the traditional neutral-point-clamped multilevel converters, active neutral-point-clamped multilevel converters have more combinations of switching states, which can achieve better circuit performance.
  • the present disclosure relates to a method for switching a three-level active neutral-point-clamped (3L-ANPC) converter
  • the three-level active neutral-point-clamped (3L-ANPC) converter comprises at least one bridge arm
  • each bridge arm comprises multiple input terminals, one output terminal and multiple switches connected between the multiple input terminals and the output terminal
  • the multiple input terminals comprises a first input terminal, a second input terminal, and a third input terminal
  • the multiple switches comprise a first external switch, a first internal switch, a second internal switch, a second external switch, a first clamped switch, and a second clamped switch
  • the first external switch, the first internal switch, the second internal switch and the second external switch are sequentially connected in series, one end of the first external switch is connected with the first input terminal, and the other end of the first external switch is connected with the first internal switch, one end of the first clamped switch is connected with the second input terminal, and the other end of the first clamped switch is connected with the connection point of
  • the multiple input terminals may be 3 or more input terminals.
  • the multiple input terminals may be 3 input terminals.
  • the multiple input terminals may be 4 input terminals.
  • the multiple input terminals may be 5 input terminals.
  • the method further comprises switching the bridge arm from the second state outputting the second level to the first state outputting the first level, wherein the switching the bridge arm from the second state outputting the second level to the first state outputting the first level comprises: switching the bridge arm from the second state to the second transition state; switching the bridge arm from the second transition state to the first transition state; and switching the bridge arm from the first transition state to the first state.
  • the method further comprises switching the bridge arm from a third state outputting a third level to the second state outputting the second level, wherein the second level is higher than the third level and the switching the bridge arm from a third state outputting a third level to the second state outputting the second level comprises: switching the bridge arm from the third state to a third transition state, wherein in the third state, the second external switch and the second internal switch are turned on, and other switches in the bridge arm are turned off, and in the third transition state, the second internal switch is turned on, and other switches in the bridge arm are turned off; switching the bridge arm from the third transition state to a fourth transition state, wherein in the fourth transition state, the second internal switch and the second clamped switch are turned on, and other switches in the bridge arm are turned off; and switching the bridge arm from the fourth transition state to the second state.
  • the method further comprises switching the bridge arm from the second state outputting the second level to the third state outputting the third level, wherein the switching the bridge arm from the second state outputting the second level to the third state outputting the third level comprises: switching the bridge arm from the second state to the fourth transition state; switching the bridge arm from the fourth transition state to the third transition state; and switching the bridge arm from the third transition state to the third state.
  • the method further comprises switching the bridge arm from the first state outputting the first level to the third state outputting the third level
  • the switching the bridge arm from the first state outputting the first level to the third state outputting the third level comprises: switching the bridge arm from the first state to the first transition state; switching the bridge arm from the first transition state to the second transition state; switching the bridge arm from the second transition state to the second state; switching the bridge arm from the second state to the fourth transition state; switching the bridge arm from the fourth transition state to the third transition state; and switching the bridge arm from the third transition state to the third state.
  • the method further comprises switching the bridge arm from the third state outputting the third level to the first state outputting the first level
  • the switching the bridge arm from the third state outputting the third level to the first state outputting the first level comprises: switching the bridge arm from the third state to the third transition state; switching the bridge arm from the third transition state to the fourth transition state; switching the bridge arm from the fourth transition state to the second state; switching the bridge arm from the second state to the second transition state; switching the bridge arm from the second transition state to the first transition state; and switching the bridge arm from the first transition state to the first state.
  • the present disclosure relates to a control device for operating a three-level active neutral-point-clamped (3L-ANPC) converter
  • the three-level active neutral-point-clamped (3L-ANPC) converter comprises at least one bridge arm, and each bridge arm comprises multiple input terminals, one output terminal and multiple switches connected between the multiple input terminals and the output terminal, the multiple input terminals comprises a first input terminal, a second input terminal, and a third input terminal
  • the multiple switches comprise a first external switch, a first internal switch, a second internal switch, a second external switch, a first clamped switch, and a second clamped switch, wherein the first external switch, the first internal switch, the second internal switch and the second external switch are sequentially connected in series, one end of the first external switch is connected with the first input terminal, and the other end of the first external switch is connected with the first internal switch, one end of the first clamped switch is connected with the second input terminal, and the other end of the first clamped switch is connected with the connection
  • control device is further configured to transmit a control signal to the bridge arm to switch the bridge arm from the second state outputting the second level to the first state outputting the first level
  • switching the bridge arm from the second state outputting the second level to the first state outputting the first level comprises: switching the bridge arm from the second state to the second transition state; switching the bridge arm from the second transition state to the first transition state; and switching the bridge arm from the first transition state to the first state.
  • control device is further configured to transmit a control signal to the bridge arm to switch the bridge arm from a third state outputting a third level to the second state outputting the second level, wherein the second level is higher than the third level and the switching the bridge arm from a third state outputting a third level to the second state outputting the second level comprises: switching the bridge arm from the third state to a third transition state, wherein in the third state, the second external switch and the second internal switch are turned on, and other switches in the bridge arm are turned off, and in the third transition state, the second internal switch is turned on, and other switches in the bridge arm are turned off; switching the bridge arm from the third transition state to a fourth transition state, wherein in the fourth transition state, the second internal switch and the second clamped switch are turned on, and other switches in the bridge arm are turned off; and switching the bridge arm from the fourth transition state to the second state.
  • control device is further configured to transmit a control signal to the bridge arm to switch the bridge arm from the second state outputting the second level to the third state outputting a third level
  • switching the bridge arm from the second state outputting the second level to the third state outputting a third level comprises: switching the bridge arm from the second state to the fourth transition state; switching the bridge arm from the fourth transition state to the third transition state; and switching the bridge arm from the third transition state to the third state.
  • control device is further configured to transmit a control signal to the bridge arm to switch the bridge arm from the first state outputting the first level to the third state outputting the third level
  • switching the bridge arm from the first state outputting the first level to the third state outputting the third level comprises: switching the bridge arm from the first state to the first transition state; switching the bridge arm from the first transition state to the second transition state; switching the bridge arm from the second transition state to the second state; switching the bridge arm from the second state to the fourth transition state; switching the bridge arm from the fourth transition state to the third transition state; and switching the bridge arm from the third transition state to the third state.
  • control device is further configured to transmit a control signal to the bridge arm to switch the bridge arm from the third state outputting the third level to the first state outputting the first level
  • switching the bridge arm from the third state outputting the third level to the first state outputting the first level comprises: switching the bridge arm from the third state to the third transition state; switching the bridge arm from the third transition state to the fourth transition state; switching the bridge arm from the fourth transition state to the second state; switching the bridge arm from the second state to the second transition state; switching the bridge arm from the second transition state to the first transition state; and switching the bridge arm from the first transition state to the first state.
  • the present disclosure relates to a three-level active neutral-point-clamped (3L-ANPC) converter, comprising: at least one bridge arm, wherein each bridge arm comprises multiple input terminals, one output terminal and multiple switches connected between the multiple input terminals and the output terminal, the multiple input terminals comprises a first input terminal, a second input terminal, and a third input terminal, and the multiple switches comprise a first external switch, a first internal switch, a second internal switch, a second external switch, a first clamped switch, and a second clamped switch, wherein the first external switch, the first internal switch, the second internal switch and the second external switch are sequentially connected in series, one end of the first external switch is connected with the first input terminal, and the other end of the first external switch is connected with the first internal switch, one end of the first clamped switch is connected with the second input terminal, and the other end of the first clamped switch is connected with the connection point of the first external switch and the first internal switch, one end of the second external switch is connected with
  • Fig. 1 shows a structural diagram illustrating a three-level active neutral-point-clamped (3L-ANPC) converter in an exemplary embodiment of the present disclosure
  • Fig. 2 shows a structural diagram illustrating a bridge arm of a three-level active neutral-point-clamped (3L-ANPC) converter in an exemplary embodiment of the present disclosure
  • Fig. 3a to Fig. 3b show signal diagrams illustrating pulse width modulation (PWM) of a bridge arm of a three-level active neutral-point-clamped (3L-ANPC) converter in an exemplary embodiment of the present disclosure
  • Fig. 4 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a first state outputting a first level to a second state outputting a second level in an exemplary embodiment of the present disclosure
  • Fig. 5 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a second state outputting a second level to a first state outputting a first level in an exemplary embodiment of the present disclosure
  • Fig. 6 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a third state outputting a third level to a second state outputting a second level in an exemplary embodiment of the present disclosure
  • Fig. 7 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a second state outputting a second level to a third state outputting a third level in an exemplary embodiment of the present disclosure
  • Fig. 8 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a first state outputting a first level to a third state outputting a third level in an exemplary embodiment of the present disclosure
  • Fig. 9 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a third state outputting a third level to a first state outputting a first level in an exemplary embodiment of the present disclosure
  • Fig. 10a to Fig. 10g show schematic diagrams illustrating states of the switches of a bridge arm in a first state, a first transition state, a second transition state, a second state, a fourth transition state, a third transition state, and a third state when an output current is a positive current in an exemplary embodiment of the present disclosure
  • Fig. 11a to Fig. 11g show schematic diagrams illustrating states of the switches of a bridge arm in a first state, a first transition state, a second transition state, a second state, a fourth transition state, a third transition state, and a third state when an output current is a negative current in an exemplary embodiment of the present disclosure.
  • first , “second” , etc. to describe various elements is not intended to limit the positional relationship, timing relationship, or importance relationship of these elements. Such terms are only used for distinguishing one element from another.
  • first element and the second element may refer to the same instance of the element, while in some cases, based on the description of the context, they may also refer to different instances.
  • Fig. 1 shows a structural diagram illustrating a three-level active neutral-point-clamped (3L-ANPC) converter in an exemplary embodiment of the present disclosure.
  • the three-level active neutral-point-clamped (3L-ANPC) converter 100 comprises bridge arms 101, 102, 103 and controller 104.
  • the three-level active neutral-point-clamped (3L-ANPC) converter 100 further comprises general input terminals 111a, 111b, 111c.
  • each of the bridge arms 101, 102, 103 comprises multiple input terminals, one output terminal and multiple switches connected between the multiple input terminals and the output terminal.
  • the bridge arm 101 comprises input terminals 101a, 101b, 101c, and output terminal 101d.
  • the bridge arm 102 comprises input terminals 102a, 102b, 102c, and output terminal 102d.
  • the bridge arm 103 comprises input terminals 103a, 103b, 103c, and output terminal 103d.
  • the input terminals 101a, 102a, 103a are connected with the same general input terminal 111a.
  • the input terminals 101b, 102b, 103b are connected with the same general input terminal 111b.
  • the input terminals 101c, 102c, 103c are connected with the same general input terminal 111c.
  • each of the bridge arms 101, 102, 103 converts the received input voltage into an output voltage.
  • each of the bridge arms 101, 102, 103 receives input voltages from the respective input terminals, converts the received input voltages into an output voltage by controlling ON/OFF of the multiple switches in the bridge arm, and outputs the output voltage at the respective output terminal.
  • the input voltages of the bridge arms are DC voltages
  • the output voltages of the bridge arms are AC voltages.
  • the voltage on the general input terminal 111a is maintained at a first level U 1
  • the voltage on the general input terminal 111b is maintained at a second level U 2
  • the voltage on the general input terminal 111c is maintained at a third level U 3
  • the first level U 1 is higher than the second level U 2
  • the second level U 2 is higher than the third level U 3 .
  • the voltage on the input terminals 101a, 102a, 103a is maintained at the first level U 1
  • the voltage on the input terminals 101b, 102b, 103b is maintained at the second level U 2
  • the voltage on the input terminals 101c, 102c, 103c is maintained at the third level U 3 .
  • the output voltages of the output terminals 101d, 102d, 103d of the bridge arms 101, 102, 103 may be the first level U 1 , the second level U 2 , or the third level U 3 .
  • the controller 104 is coupled with the bridge arms 101, 102, 103.
  • the controller 104 transmits control signals to the bridge arms 101 to 103, respectively, to control the output voltages of the bridge arms 101, 102, 103.
  • the controller 104 receives sampling signals from the three-level active neutral-point-clamped converter 100, respectively (e.g., sampling signals of the output voltage and output current of the converter) , then calculates the modulating signals of the bridge arms 101, 102, 103 based on the sampling signals, and finally obtains the control signals of the bridge arms 101, 102, 103 with the pulse width modulation (PWM) .
  • PWM pulse width modulation
  • the controller 104 transmits control signals to the bridge arms 101, 102, 103, respectively, to control ON/OFF of multiple switches in the bridge arms 101, 102, 103, and therefore controls the output voltages of the bridge arms 101, 102, 103.
  • the controller 104 may be a programmable hardware (e.g., programmable logic circuit comprising field programmable gate array (FPGA) and/or programmable logic array (PLA) ) programmed by assembly language or hardware programming language (e.g., VERILOG, VHDL, C++) .
  • the controller 104 may be a non-programmable hardware circuit, such as a dedicated integrated circuit.
  • Fig. 1 only shows three bridge arms and one controller.
  • Fig. 1 is only an example and the number of bridge arms or controllers in the three-level active neutral-point-clamped (3L-ANPC) converter 100 is not limited to that as shown in Fig. 1.
  • Fig. 2 shows a structural diagram illustrating a bridge arm of a three-level active neutral-point-clamped (3L-ANPC) converter in an exemplary embodiment of the present disclosure.
  • the bridge arm 200 comprises multiple input terminals 201a, 201b, 201c, output terminal 201d and multiple switches 211, 212, 213, 214, 215, 216 connected between the multiple input terminals and the output terminal.
  • the multiple input terminals comprise a first input terminal 201a, a second input terminal 201b, and a third input terminal 201c.
  • the multiple switches comprise a first external switch 211, a first internal switch 212, a second internal switch 213, a second external switch 214, a first clamped switch 215, and a second clamped switch 216.
  • the bridge arm 200 comprises a first half of the bridge arm and a second half of the bridge arm, wherein the first half of the bridge arm comprises the first external switch 211, the first internal switch 212 and the first clamped switch 215, and the second half of the bridge arm comprises the second internal switch 213, the second external switch 214 and the second clamped switch 216.
  • the multiple switches 211, 212, 213, 214, 215, 216 may be the same type of switching components, wherein each switch comprises an active switching component and a diode anti-parallel to the active switching component.
  • each of the multiple switches 211, 212, 213, 214, 215, 216 comprises an insulated gate bipolar transistor (IGBT) and a diode anti-parallel to the IGBT, wherein the positive pole of the anti-parallel diode is connected with the emitter of the IGBT, and the negative pole of the diode is connected with the collector of the IGBT.
  • IGBT insulated gate bipolar transistor
  • each of the multiple switches 211, 212, 213, 214, 215, 216 comprises a metal oxide semiconductor field effect transistor (MOSFET) and a diode anti-parallel to the MOSFET.
  • MOSFET metal oxide semiconductor field effect transistor
  • the multiple switches 211, 212, 213, 214, 215, 216 may be different types of switching components.
  • the first external switch 211, the second external switch 214, the first clamped switch 215, and the second clamped switch 216 may be a combination of MOSFETs and diodes
  • the first internal switch 212 and the second internal switch 213 may be a combination of IGBTs and diodes.
  • the materials used to manufacture the switches 211, 212, 213, 214, 215, 216 may comprise, but are not limited to, silicon (Si) , germanium (Ge) , silicon carbide (SiC) , gallium nitride (GaN) , and a combination thereof.
  • the first external switch 211, the first internal switch 212, the second internal switch 213, and the second external switch 214 are sequentially connected in series.
  • the first external switch 211 is located between the first input terminal 201a and the first internal switch 212, wherein the positive pole of the first external switch 211 is connected with the first input terminal 201a, and the negative pole of the first external switch 211 is connected with the positive pole of the first internal switch 212.
  • the first internal switch 212 is located between the first external switch 211 and the second internal switch 213, wherein the negative pole of the first internal switch 212 is connected with the positive pole of the second internal switch 213, and the connection point of the first internal switch 212 and the second internal switch 213 is connected with the output terminal 201d.
  • the second internal switch 213 is located between the first internal switch 212 and the second external switch 214, and the negative pole of the second internal switch 213 is connected with the positive pole of the second external switch 214.
  • the second external switch 214 is located between the second internal switch 213 and the third input terminal 201c, and the negative pole of the second external switch 214 is connected with the third input terminal 201c.
  • the first clamped switch 215 is located between the second input terminal 201b and the connection point of the first external switch 211 and the first internal switch 212, the positive pole of the first clamped switch 215 is connected with the connection point of the first external switch 211 and the first internal switch 212, and the negative pole of the first clamped switch 215 is connected with the second input terminal 201b.
  • the second clamped switch 216 is located between the second input terminal 201b and the connection point of the second internal switch 213 and the second external switch 214, the positive pole of the second clamped switch 216 is connected with the second input terminal 201b, and the negative pole of the second clamped switch 216 is connected with the connection point of the second internal switch 213 and the second external switch 214.
  • each gate of the multiple switches 211, 212, 213, 214, 215, 216 receives the control signals from the controller. In response to the control signals of the controller, each of the multiple switches 211, 212, 213, 214, 215, 216 is turned on or turned off accordingly, wherein the IGBTs in the switches are turned on or turned off accordingly.
  • each of the multiple switches 211, 212, 213, 214, 215, 216 when the control signals in response to the controller are of high level, each of the multiple switches 211, 212, 213, 214, 215, 216 is turned on; and when the control signals in response to the controller are of low level, each of the multiple switches 211, 212, 213, 214, 215, 216 is turned off. In some embodiments, when the control signals in response to the controller are of high level, each of the multiple switches 211, 212, 213, 214, 215, 216 is turned off; and when the control signals in response to the controller are of low level, each of the multiple switches 211, 212, 213, 214, 215, 216 is turned on.
  • the output voltage u o of the bridge arm when the bridge arm is in a first state, the output voltage u o of the bridge arm is at the first level U 1 ; when the bridge arm is in a second state, the output voltage u o of the bridge arm is at the second level U 2 ; and when the bridge arm is in a third state, the output voltage u o of the bridge arm is at the third level U 3 .
  • the first external switch 211 and the first internal switch 212 are turned on, and the first clamped switch 215, the second internal switch 213, the second external switch 214 and the second clamped switch 216 are turned off.
  • the bridge arm when the bridge arm is in a second state, the first internal switch 212, the first clamped switch 215, the second internal switch 213 and the second clamped switch 216 are turned on, and the first external switch 211 and the second external switch 214 are turned off.
  • the second internal switch 213 and the second external switch 214 when the bridge arm is in a third state, the second internal switch 213 and the second external switch 214 are turned on, and the first external switch 211, the first internal switch 212, the first clamped switch 215 and the second clamped switch 216 are turned off.
  • the output current direction when the output current direction is flowing out of the output terminal 201d, the output current is a positive current; and when the output current direction is flowing into the output terminal 201d, the output current is a negative current.
  • the bridge arm 200 further comprises capacitors 221, 222. As shown in Fig. 2, the capacitor 221 is located between the first input terminal 201a and the second input terminal 201b, and the capacitor 222 is located between the second input terminal 201b and the third input terminal 201c.
  • Figs. 3a and 3b show signal diagrams illustrating pulse width modulation (PWM) of a bridge arm of a three-level active neutral-point-clamped (3L-ANPC) converter in an exemplary embodiment of the present disclosure.
  • PWM pulse width modulation
  • the modulating signal u s is calculated by the controller based on the sampling signal (e.g., sampling signals of the output voltage and output current of the converter) .
  • the output voltage u o of the bridge arm is obtained by comparing the modulating signal u s with the carrier signals u c1 and u c2 with the controller.
  • the modulating signal u s when the modulating signal u s is greater than 0, the modulating signal u s is compared with the carrier signal u c1 .
  • the bridge arm When the modulating signal u s is greater than the carrier signal u c1 , the bridge arm outputs the first level U 1 ; and when the modulating signal u s is less than the carrier signal u c1 , the bridge arm outputs the second level U 2 .
  • Fig. 3a shows a signal diagram of the PWM of the bridge arm when the modulating signal u s is greater than 0.
  • the modulating signal u s is greater than the carrier signal u c1
  • the bridge arm outputs the first level U 1 .
  • the modulating signal u s is less than the carrier signal u c1
  • the bridge arm outputs the second level U 2 .
  • the modulating signal u s is greater than the carrier signal u c1 , and the bridge arm outputs the first level U 1 .
  • the modulating signal u s is less than the carrier signal u c1 , and the bridge arm outputs the second level U 2 .
  • the modulating signal u s is greater than the carrier signal u c1 , and the bridge arm outputs the first level U 1 .
  • the modulating signal u s when the modulating signal u s is less than 0, the modulating signal u s is compared with the carrier signal u c2 .
  • the bridge arm When the modulating signal u s is greater than the carrier signal u c2 , the bridge arm outputs the second level U 2 ; and when the modulating signal u s is less than the carrier signal u c2 , the bridge arm outputs the third level U 3 .
  • Fig. 3b shows a signal diagram of the PWM of the bridge arm when the modulating signal u s is less than 0.
  • the modulating signal u s is less than the carrier signal u c2
  • the bridge arm outputs the third level U 3 .
  • the modulating signal u s is greater than the carrier signal u c2
  • the bridge arm outputs the second level U 2 .
  • the modulating signal u s is less than the carrier signal u c2 , and the bridge arm outputs the third level U 3 .
  • the modulating signal u s is greater than the carrier signal u c2 , and the bridge arm outputs the second level U 2 .
  • the modulating signal u s is less than the carrier signal u c2 , and the bridge arm outputs the third level U 3 ;
  • the output voltage u o of the bridge arm is switched between the first level U 1 and the second level U 2 .
  • the modulating signal u s is less than 0, the output voltage u o of the bridge arm is switched between the second level U 2 and the third level U 3 .
  • the first external switch 211 and the first internal switch 212 when the bridge arm is in the first state, the first external switch 211 and the first internal switch 212 are turned on, the first clamped switch 215, the second internal switch 213, the second external switch 214 and the second clamped switch 216 are turned off, and the first level U 1 is output; and when the bridge arm is in the second state, the first internal switch 212, the first clamped switch 215, the second internal switch 213 and the second clamped switch 216 are turned on, the first external switch 211 and the second external switch 214 are turned off, and the second level U 2 is output.
  • the bridge arm is firstly switched from the first state to the transition state, and then to the second state, so as to reduce the switching loss and the switching stress.
  • the bridge arm when the bridge arm switches from the second state to the first state, from the second state to the third state or from the third state to the second state, it may also be switched from an initial state to a transition state and then to a final state.
  • Fig. 4 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a first state outputting a first level to a second state outputting a second level in an exemplary embodiment of the present disclosure.
  • the method for switching the bridge arm may comprise the following steps.
  • the bridge arm is switched from the first state to the first transition state.
  • the first external switch and the first internal switch are turned on, and the other switches in the bridge arm are turned off.
  • the first transition state the first internal switch is turned on, and the other switches in the bridge arm are turned off.
  • the state of the bridge arm 1000 is shown in Fig. 10a.
  • the first external switch 1011 and the first internal switch 1012 are turned on, and the other switches 1013, 1014, 1015, 1016 are turned off. Accordingly, the IGBTs in the first external switch 1011 and the first internal switch 1012 are turned on, and the IGBTs in the other switches are turned off.
  • the output current I o flows through the first input terminal 1001a, the IGBT in the first external switch 1011, the IGBT in the first internal switch 1012 and the output terminal 1001d, and the bridge arm 1000 outputs the first level U 1 .
  • the state of the bridge arm 1000 is shown in Figure 11a.
  • the states of the multiple switches 1011, 1012, 1013, 1014, 1015, 1016 are the same as those when the output current is a positive current.
  • the output current I o flows through the output terminal 1001d, the diode in the first internal switch 1012, the diode in the first external switch 1011 and the first input terminal 1001a, and the bridge arm 1000 outputs the first level U 1 .
  • the state of the bridge arm 1000 is shown in Fig. 10b.
  • the first internal switch 1012 is turned on, and the other switches 1011, 1013, 1014, 1015, 1016 are turned off. Accordingly, the IGBT in the first internal switch 1012 is turned on, and the IGBTs in the other switches are turned off.
  • the output current I o flows through the second input terminal 1001b, the diode in the first clamped switch 1015, the IGBT in the first internal switch 1012 and the output terminal 1001d, and the bridge arm 1000 outputs the second level U 2 .
  • the state of the bridge arm 1000 is shown in Figure 11b.
  • the states of the multiple switches 1011, 1012, 1013, 1014, 1015, 1016 are the same as those when the output current I o is a positive current.
  • the output current I o flows through the output terminal 1001d, the diode in the first internal switch 1012, the diode in the first external switch 1011 and the first input terminal 1001a, and the bridge arm 1000 outputs the first level U 1 .
  • the bridge arm in S403, is switched from the first transition state to the second transition state.
  • the first internal switch and the first clamped switch are turned on, and other switches in the bridge arm are turned off.
  • the state of the bridge arm 1000 is shown in Fig. 10c.
  • the first internal switch 1012 and the first clamped switch 1015 are turned on, and the other switches 1011, 1013, 1014, 1016 are turned off. Accordingly, the IGBTs in the first internal switch 1012 and the first clamped switch 1015 are turned on, and the IGBTs in the other switches 1011, 1013, 1014, 1016 are turned off.
  • the output current I o flows through the second input terminal 1001b, the diode in the first clamped switch 1015, the IGBT in the first internal switch 1012 and the output terminal 1001d, and the bridge arm outputs the second level U 2 .
  • the state of the bridge arm 1000 is shown in Figure 11c.
  • the states of the multiple switches 1011, 1012, 1013, 1014, 1015, 1016 are the same as those when the output current I o is a positive current.
  • the output current I o flows through the output terminal 1001d, the diode in the first internal switch 1012, the IGBT in the first clamped switch 1015 and the second input terminal 1001b, and the bridge arm outputs the second level U 2 .
  • the bridge arm is switched from the second transition state to the second state.
  • the first external switch, the second internal switch, the first clamped switch and the second clamped switch are turned on, and the other switches in the bridge arm are turned off.
  • the state of the bridge arm 1000 is shown in Fig. 10d.
  • the first internal switch 1012, the second internal switch 1013, the first clamped switch 1015 and the second clamped switch 1016 are turned on, and the other switches 1011, 1014 are turned off. Accordingly, the IGBTs in the first internal switch 1012, the second internal switch 1013, the first clamped switch 1015 and the second clamped switch 1016 are turned on, and the IGBTs in the other switches 1011, 1014 are turned off.
  • the output current I o flows through the second input terminal 1001b, two sets of switches 1012, 1013, 1015, 1016 in parallel and the output terminal 1001d, and the bridge arm outputs the second level U 2 .
  • the output current I o flows through the diode in the first clamped switch 1015 and the IGBT in the first internal switch 1012, and also flows through the IGBT in the second clamped switch 1016 and the diode in the second internal switch 1013.
  • the state of the bridge arm 1000 is shown in Fig. 11d.
  • the states of the multiple switches 1011, 1012, 1013, 1014, 1015, 1016 are the same as those when the output current I o is a positive current.
  • the output current I o flows through the output terminal 1001d, two sets of switches 1012, 1013, 1015, 1016 in parallel and the second output terminal 1001b, and the bridge arm outputs the second level U 2 .
  • the output current I o flows through the diode in the first internal switch 1012 and the IGBT in the first clamped switch 1015, and also flows through the IGBT in the second internal switch 1013 and the diode in the second clamped switch 1016.
  • the first internal switch continues to conduct, and the current is switched between the first external switch and the first clamped switch, wherein the first external switch, the first clamped switch and the first internal switch are configured on the first half of the bridge arm, which makes the commutation loop shorter and avoids higher switching stress caused by the parasitic inductance of the commutation loop.
  • Fig. 5 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a second state outputting a second level to a first state outputting a first level in an exemplary embodiment of the present disclosure.
  • the method for switching the bridge arm may comprise the following steps.
  • the bridge arm in S501, is switched from the second state to the second transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the bridge arm is switched from the second state to the second transition state, the second internal switch and the second clamped switch are turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S503, is switched from the second transition state to the first transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the first clamped switch is turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S505, is switched from the first transition state to the first state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the first external switch is turned on, and the states of the other switches are maintained unchanged.
  • the first internal switch continues to conduct, and the current is switched between the first external switch and the first clamped switch, wherein the first external switch, the first clamped switch and the first internal switch are configured on the first half of the bridge arm, which makes the commutation loop shorter and avoids higher switching stress caused by the parasitic inductance of the commutation loop.
  • Fig. 6 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a third state outputting a third level to a second state outputting a second level in an exemplary embodiment of the present disclosure.
  • the method for switching the bridge arm may comprise the following steps.
  • the bridge arm is switched from the third state to the third transition state.
  • the second external switch and the second internal switch are turned on, and the other switches in the bridge arm are turned off.
  • the second internal switch is turned on, and the other switches in the bridge arm are turned off.
  • the state of the bridge arm 1000 is shown in Fig. 10g.
  • the second external switch 1014 and the second internal switch 1013 are turned on, and the other switches 1011, 1012, 1015, 1016 are turned off. Accordingly, the IGBTs in the second external switch 1014 and the second internal switch 1013 are turned on, and the IGBTs in the other switches are turned off.
  • the output current I o flows through the third input terminal 1001c, the diode in the second external switch 1014, the diode in the second internal switch 1013 and the output terminal 1001d, and the bridge arm 1000 outputs the third level U 3 .
  • the state of the bridge arm 1000 is shown in Figure 11g.
  • the states of the multiple switches 1011 to 1016 are the same as those when the output current I o is a positive current.
  • the output current I o flows through the output terminal 1001d, the IGBT in the second internal switch 1013, the IGBT in the second external switch 1014 and the third input terminal 1001c, and the bridge arm 1000 outputs the third level U 3 .
  • the state of the bridge arm 1000 is shown in Fig. 10f.
  • the second internal switch 1013 is turned on, and the other switches 1011, 1012, 1014, 1015, 1016 are turned off. Accordingly, the IGBT in the second internal switch 1013 is turned on, and the IGBTs in the other switches are turned off.
  • the output current I o flows through the third input terminal 1001c, the diode in the second external switch 1014, the diode in the second internal switch 1013 and the output terminal 1001d, and the bridge arm 1000 outputs the third level U 3 .
  • the state of the bridge arm 1000 is shown in Figure 11f.
  • the states of the multiple switches 1011, 1012, 1013, 1014, 1015, 1016 are the same as those when the output current I o is a positive current.
  • the output current I o flows through the output terminal 1001d, the IGBT in the second internal switch 1013, the diode in the second clamped switch 1016 and the second input terminal 1001b, and the bridge arm 1000 outputs the second level U 2 .
  • the bridge arm in S603, is switched from the third transition state to the fourth transition state.
  • the second internal switch and the second clamped switch are turned on, and other switches in the bridge arm are turned off.
  • the state of the bridge arm 1000 is shown in Fig. 10e.
  • the second internal switch 1013 and the second clamped switch 1016 are turned on, and the other switches 1011, 1012, 1014, 1015 are turned off. Accordingly, the IGBTs in the second internal switch 1013 and the second clamped switch 1016 are turned on, and the IGBTs in the other switches 1011, 1012, 1014, 1015 are turned off.
  • the output current I o flows through the second input terminal 1001b, the IGBT in the second clamped switch 1016, the diode in the second internal switch 1013 and the output terminal 1001d, and the bridge arm 1000 outputs the second level U 2 .
  • the state of the bridge arm 1000 is shown in Figure 11e.
  • the states of the multiple switches 1011, 1012, 1013, 1014, 1015, 1016 are the same as those when the output current I o is a positive current.
  • the output current I o flows through the output terminal 1001d, the IGBT in the second internal switch 1013, the diode in the second clamped switch 1016 and the second input terminal 1001b, and the bridge arm 1000 outputs the second level U 2 .
  • the bridge arm is switched from the fourth transition state to the second state.
  • the bridge arm When the bridge arm is switched from the fourth transition state to the second state, the first internal switch and the first clamped switch are turned on, and the states of the other switches are maintained unchanged.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the second internal switch continues to conduct, and the current is switched between the second external switch and the second clamped switch, wherein the second external switch, the second clamped switch and the second internal switch are configured on the second half of the bridge arm, which makes the commutation loop shorter and avoids higher switching stress caused by the parasitic inductance of the commutation loop.
  • Fig. 7 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a second state outputting a second level to a third state outputting a third level in an exemplary embodiment of the present disclosure.
  • the method for switching the bridge arm may comprise the following steps.
  • the bridge arm in S701, is switched from the second state to the fourth transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4 and Fig. 6.
  • the bridge arm is switched from the second state to the fourth transition state, the first internal switch and the first clamped switch are turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S703, is switched from the fourth transition state to the third transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 6.
  • the second clamped switch is turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S705, is switched from the third transition state to the third state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 6.
  • the second external switch is turned on, and the states of the other switches are maintained unchanged.
  • the second internal switch continues to conduct, and the current is switched between the second external switch and the second clamped switch, wherein the second external switch, the second clamped switch and the second internal switch are configured on the second half of the bridge arm, which makes the commutation loop shorter and avoids higher switching stress caused by the parasitic inductance of the commutation loop.
  • Fig. 8 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a first state outputting a first level to a third state outputting a third level in an exemplary embodiment of the present disclosure.
  • the method for switching the bridge arm may comprise the following steps.
  • the bridge arm in S801, is switched from the first state to the first transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the first external switch is turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S803, is switched from the first transition state to the second transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the first clamped switch is turned on, and the states of the other switches are maintained unchanged.
  • the bridge arm in S805, is switched from the second transition state to the second state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the bridge arm is switched from the second transition state to the second state, the second internal switch and the second clamped switch are turned on, and the states of the other switches are maintained unchanged.
  • the bridge arm in S807, is switched from the second state to the fourth transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 6.
  • the bridge arm is switched from the second state to the fourth transition state, the first internal switch and the first clamped switch are turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S809, is switched from the fourth transition state to the third transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 6.
  • the second clamped switch is turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S811, is switched from the third transition state to the third state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 6.
  • the second external switch is turned on, and the states of the other switches are maintained unchanged.
  • the current is commutated between the external switch and the clamped switch, wherein the external switch, the clamped switch and the continuously conducting internal switch are configured on the same half of the bridge arm.
  • the commutation loops are short, which avoid higher switching stress caused by the parasitic inductance of the commutation loops.
  • Fig. 9 shows a flowchart diagram illustrating an exemplary method for switching a bridge arm from a third state outputting a third level to a first state outputting a first level in an exemplary embodiment of the present disclosure.
  • the bridge arm in S901, is switched from the third state to the third transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 6.
  • the second external switch is turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S903, is switched from the third transition state to the fourth transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 6.
  • the second clamped switch is turned on, and the states of the other switches are maintained unchanged.
  • the bridge arm in S905, is switched from the fourth transition state to the second state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the bridge arm is switched from the fourth transition state to the second state, the first internal switch and the first clamped switch are turned on, and the states of the other switches are maintained unchanged.
  • the bridge arm in S907, is switched from the second state to the second transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the bridge arm is switched from the second state to the second transition state, the second internal switch and the second clamped switch are turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S909, is switched from the second transition state to the first transition state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the first clamped switch is turned off, and the states of the other switches are maintained unchanged.
  • the bridge arm in S911, is switched from the first transition state to the first state.
  • the switching state, the current flow path and the output level of the bridge arm are the same as those described in Fig. 4.
  • the first external switch is turned on, and the states of the other switches are maintained unchanged.
  • the current is commutated between the external switch and the clamped switch, wherein the external switch, the clamped switch and the continuously conducting internal switch are configured on the same half of the bridge arm.
  • the commutation loops are short, which avoid higher switching stress caused by the parasitic inductance of the commutation loops.
  • the method for switching the three-level active neutral-point-clamped (3L-ANPC) converter in the embodiments of the present disclosure does not need to detect the direction of the output current, which reduces the complexity of the method.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

La présente divulgation concerne un convertisseur forcé à point neutre actif à trois niveaux (ANPC à 3L) et un procédé de fabrication associé, ainsi qu'un dispositif de commande. Le convertisseur forcé à point neutre actif à trois niveaux (ANPC à 3L) comprend au moins une branche de pont et un composant de commande, chaque branche de pont comprenant de multiples bornes d'entrée, une borne de sortie et de multiples commutateurs, connectés entre les multiples bornes d'entrée et la borne de sortie. Les multiples bornes d'entrée comprennent une première borne d'entrée, une deuxième borne d'entrée et une troisième borne d'entrée. Les multiples commutateurs comprennent un premier commutateur externe, un premier commutateur interne, un premier commutateur forcé, un second commutateur externe, un second commutateur interne et un second commutateur forcé. Le procédé consiste à commuter la branche de pont d'un premier état, transmettant un premier niveau, à un second état, transmettant un second niveau.
PCT/CN2021/078630 2020-03-05 2021-03-02 Convertisseur forcé à point neutre actif à trois niveaux et procédé de fonctionnement associé et dispositif de commande WO2021175204A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010145246.3A CN111313734B (zh) 2020-03-05 2020-03-05 有源中点钳位型三电平变换器及其操作方法和控制装置
CN202010145246.3 2020-03-05

Publications (1)

Publication Number Publication Date
WO2021175204A1 true WO2021175204A1 (fr) 2021-09-10

Family

ID=71149504

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/078630 WO2021175204A1 (fr) 2020-03-05 2021-03-02 Convertisseur forcé à point neutre actif à trois niveaux et procédé de fonctionnement associé et dispositif de commande

Country Status (2)

Country Link
CN (1) CN111313734B (fr)
WO (1) WO2021175204A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115133799A (zh) * 2022-09-01 2022-09-30 浙江日风电气股份有限公司 一种anpc型逆变器的控制方法及相关组件
EP4170888A1 (fr) * 2021-10-21 2023-04-26 General Electric Company Système et procédé de fonctionnement d'un convertisseur de puissance multiniveau à l'aide d'un temps mort à états multiples

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113098310B (zh) * 2021-05-24 2022-06-07 青岛大学 一种有源钳位三电平逆变电路及其控制方法
CN113224962A (zh) * 2021-05-24 2021-08-06 青岛大学 一种有源钳位三电平逆变电路及方法
CN117833905A (zh) * 2024-03-01 2024-04-05 上海安其威微电子科技有限公司 电平转换装置及其控制方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2728734A1 (fr) * 2012-11-02 2014-05-07 ABB Oy Onduleur fixé au point neutre à trois niveaux
CN103401455B (zh) * 2013-06-26 2015-06-17 山西潞安环保能源开发股份有限公司 有源中点箝位三电平逆变器调制方法
CN106655853B (zh) * 2015-07-22 2019-02-22 维谛技术有限公司 一种三电平逆变器
CN105186902B (zh) * 2015-09-10 2017-07-28 阳光电源股份有限公司 一种anpc型三电平逆变器、调制方法和电气设备
CN109088559B (zh) * 2018-09-10 2021-01-08 浙江大学 一种应用于混合型有源中点钳位式三电平变换器的调制方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CABALLERO L ET AL: "A novel commutation sequence for the three-level active neutral-point-clamped inverter to aid in splitting switching and conduction losses among the semiconductor devices", 2016 18TH EUROPEAN CONFERENCE ON POWER ELECTRONICS AND APPLICATIONS (EPE'16 ECCE EUROPE), JOINTLY OWNED BY IEEE-PELS AND EPE ASSOCIATION, 5 September 2016 (2016-09-05), pages 1 - 10, XP032985062, DOI: 10.1109/EPE.2016.7695345 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4170888A1 (fr) * 2021-10-21 2023-04-26 General Electric Company Système et procédé de fonctionnement d'un convertisseur de puissance multiniveau à l'aide d'un temps mort à états multiples
CN115133799A (zh) * 2022-09-01 2022-09-30 浙江日风电气股份有限公司 一种anpc型逆变器的控制方法及相关组件
CN115133799B (zh) * 2022-09-01 2022-11-22 浙江日风电气股份有限公司 一种anpc型逆变器的控制方法及相关组件

Also Published As

Publication number Publication date
CN111313734A (zh) 2020-06-19
CN111313734B (zh) 2021-06-29

Similar Documents

Publication Publication Date Title
WO2021175204A1 (fr) Convertisseur forcé à point neutre actif à trois niveaux et procédé de fonctionnement associé et dispositif de commande
US8848405B2 (en) Highly efficient half-bridge DC-AC converter
US11496044B2 (en) DC/DC converter and neutral-point voltage balance control method thereof
CN109962699A (zh) 用于控制mosfet开关模块的方法和装置
JP7270139B2 (ja) Ｄｃ／ｄｃ変換装置
WO2016188462A1 (fr) Amplificateur de puissance de commutation de palier à suspension magnétique et son procédé de commande
US9564832B2 (en) Circuit for synchronously switching series connected electronic switches
US10447259B2 (en) Electronic circuit provided with plurality of switching elements connected to bus bar
WO2019154138A1 (fr) Circuit en pont pour onduleur ou redresseur
US20230216399A1 (en) DC/DC Power Converter, Method for Controlling Switching Thereof, DC/DC Power Converter Arrangement and System
US20230089387A1 (en) Dc/dc power converter, method for controlling switching thereof, dc/dc power converter arrangement and system
CN113508516A (zh) 用于关断桥式电路的功率半导体开关的方法、桥式电路和包括桥式电路的逆变器
CN108471247B (zh) 三电平逆变器的控制方法、装置和系统
US8416015B2 (en) Active rectifying apparatus
US20210184574A1 (en) Hybrid Boost Converters
EP3764527A1 (fr) Dispositif de commutation et procédé de commande de dispositif de commutation
JP7503769B2 (ja) Ｄｃ／ｄｃ変換装置
JP2021180553A (ja) Ｄｃ／ｄｃ変換装置
CN112583267B (zh) 双向dc-dc变换器及包括其的不间断电源
EP3086458B1 (fr) Circuit onduleur et son procédé de fabrication
JP7432892B2 (ja) 電力変換装置
JP7201045B2 (ja) 電力変換装置
CN219875467U (zh) 一种驱动电路及电子设备
US20230052362A1 (en) Converter device having a converter and having a control device
US20200007051A1 (en) Commutating Circuit Device and Method for Reducing the Load on at Least One Semiconductor of a Converter and Vehicle Comprising a Commutating Circuit Device

Legal Events

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

Ref document number: 21712003

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: 21712003

Country of ref document: EP

Kind code of ref document: A1