WO2011073466A1 - Convertisseur modulaire comprenant des circuits répartis multiniveau de point central capacitif - Google Patents

Convertisseur modulaire comprenant des circuits répartis multiniveau de point central capacitif Download PDF

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Publication number
WO2011073466A1
WO2011073466A1 PCT/ES2009/070606 ES2009070606W WO2011073466A1 WO 2011073466 A1 WO2011073466 A1 WO 2011073466A1 ES 2009070606 W ES2009070606 W ES 2009070606W WO 2011073466 A1 WO2011073466 A1 WO 2011073466A1
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WO
WIPO (PCT)
Prior art keywords
switches
subsystem
switch
junction
capacities
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Application number
PCT/ES2009/070606
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English (en)
Spanish (es)
Inventor
Sergio Aurtenetxea Larrinaga
Igor Larrazabal Bengoetxea
Josu Elorriaga Llanos
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Ingeteam Technology, S.A.
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Application filed by Ingeteam Technology, S.A. filed Critical Ingeteam Technology, S.A.
Priority to PCT/ES2009/070606 priority Critical patent/WO2011073466A1/fr
Publication of WO2011073466A1 publication Critical patent/WO2011073466A1/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
    • 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
    • H02M7/49—Combination of the output voltage waveforms of a plurality 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0095—Hybrid converter topologies, e.g. NPC mixed with flying capacitor, thyristor converter mixed with MMC or charge pump mixed with buck
    • 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
    • H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
    • 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
    • H02M7/4837—Flying capacitor 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
    • 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

Definitions

  • the object of this invention is to define a modular converter circuit composed of at least one phase module that integrates an upper and lower part or assembly containing at least one upper and lower subsystem respectively, based on a multilevel electrical circuit with midpoint capacitive linked by diodes.
  • the upper assembly is connected at one of its ends to a positive conductor or pole and the other to the alternating current phase or central point of the phase module.
  • the lower assembly is arranged symmetrically to the alternating current phase or central point of the phase module and the other end is connected to a negative conductor or pole.
  • the potential between the positive and negative poles establishes the continuous voltage of the phase module of the converter circuit.
  • the generic type modular converter has been raised in various patents such as DE 101 03 031 A1, US 7577008 B2, WO 2009115124 A1 and in recent international publications such as (The Future of High Power Electronics in Transmission and Distribution Power Systems, Col ⁇ n C Davison and Bryan de Préville, EPE2009 - Barcelona).
  • the simplified general circuit of a phase module (100) is shown in Figure 1.
  • the conversion structure is based on a set or upper part (95) and a set or lower part (96) that they integrate one or several upper (90) and lower (91) subsystems arranged in series.
  • the upper assembly (95) is connected at one of its ends to a positive conductor or pole (P) and in the other to the alternating current phase (L) or center point of the phase module.
  • the lower assembly (96) is arranged symmetrically to the alternating current phase (L) or central point of the phase module and the other end is connected to a negative conductor or pole (N).
  • the use of electromagnetic elements (30) that facilitate the connection of the upper and lower assemblies (95, 96) to points (P), (N) and (L) can optionally be contemplated.
  • the potential between both poles (PN) establishes the continuous voltage of the phase module (100) of the converter circuit.
  • the connection of several phases (100) in parallel allows to develop more complex converter circuits such as the three-phase converter of Figure 2.
  • the subsystems (90, 91) known in accordance with the prior art are usually based on semiconductor devices of the IGBT (Insulated Gate Bipolar Transistors) type, MOS field effect transistors (MOSFETs), GTO thyristors, integrated gate switched thyristors (IGCTs) ), etc. all of which have the ability to be controlled both on and off.
  • IGBT Insulated Gate Bipolar Transistors
  • MOSFETs MOS field effect transistors
  • GTO thyristors GTO thyristors
  • IGCTs integrated gate switched thyristors
  • These subsystems comprise two switches (1, 3) and (5, 7) connected in series and based on semiconductors that can be controlled both in its on and off, two diodes (2, 4) and (6, 8) electrically connected in Antiparalle it with each switch (1, 3) and (5, 7) and a unipolar capacity (9) and (10) arranged in parallel with the serial switches (1, 3) and (5, 7) respectively.
  • the unipolar storage capacity (9) and (10) of each of these subsystems may be composed of one or a set of capacitors that provide a given capacity. The interconnection of this subsystem is done through the terminals (y1 and y2).
  • the terminal (y1) is connected to the emitter of the switches (1 and 5) and the anode of the diodes (2 and 6) in the subsystems (1 1 and 12) respectively.
  • the terminal (y2) is connected to the collector of the switches (1 and 5) and the cathode of the diodes (2 and 6) in the subsystems (1 1 and 12) respectively. It should be noted that this interconnection does not have to be done in this way.
  • WO 20091 15124 A1 the same electrical diagrams of the subsystems (1 1 and 12) are used but alternative connections are proposed, defining other structures for the general converter circuit.
  • control I and I I have two states or modes of operation called control I and I I:
  • switches (1) or (5) are on and the respective complementary switches (3) or (7) are off.
  • the voltage or potential (Uy21) between the terminals (y2, y1) of the subsystems (1 1 and 12) is equal to 0.
  • the subsystem (13) of Figure 4 consists of four switches based on semiconductor devices (21, 23, 25 and 27) that can be controlled both on and off, four diodes (22, 24, 26 and 28) , two unipolar capacities (29 and 30) and an electronic circuit (32).
  • the four switches (21, 23, 25 and 27) are electrically connected in series.
  • Each of the diodes (22, 24, 26 and 28) is electrically connected in antiparallel with each of these switches (21, 23, 25 and 27).
  • the unipolar capacities (29 or 30) are electrically connected in parallel with each pair of switches (21, 23 or 25, 27) respectively.
  • the unipolar capacities (29 or 30) of this subsystem (13) can be composed of one or a set of capacitors that provide a given capacity.
  • the terminal (y2) of the subsystem (13) is connected at the junction between the emitter and collector of the switches (21 and 23) and the anode and cathode of the diodes (22 and 24).
  • the terminal (y1) of the subsystem (13) is connected at the junction between the emitter and collector of the switches (25 and 27) and the anode and cathode of the diodes (26 and 28).
  • the junction between the emitter of the switch (23), the collector of the switch (25), the anode of the diode (24), the cathode of the diode (26), the negative terminal of the unipolar capacity (29) and the terminal Positive unipolar capacity (30) defines a common potential (P0), which is electrically connected to a potential (M) used as a reference by the electronic module (32).
  • P0 common potential
  • M potential
  • the electronic circuits that are part of this module are at a suitable potential to act on the switches (21, 23, 25 and 27).
  • This electronic module (32) is linked to a higher control that governs the converter circuit by means of two optical fibers (34 and 36).
  • control I The subsystem (13) of Figure 4 has four states or modes of operation called control I, I I, I I I and IV:
  • the diodes (22, 24, 26 and 28) are electrically connected in antiparallel with each switch (21, 23, 25 and 27).
  • the respective unipolar capacities (29 and 30) are electrically connected in parallel with each pair of switches respectively.
  • the junction between the emitter of the switch (23), the anode of the diode (24) and the negative terminal of the unipolar capacity (29) is electrically connected between the junction of the emitter and collector of the switches (25 and 27). This junction forms a common potential (P0), which is considered as a reference potential for the terminal (M) of the electronic module (32).
  • the junction between the emitter of the switch (27), the anode of the diode (28) and the negative terminal of the unipolar capacity (30) is connected to the terminal (y1) of the subsystem (14).
  • the junction between the emitter and collector of the switches (21 and 23), the anode of the diode (22) and the cathode of the diode (24) establishes the terminal (y2) of the subsystem (14).
  • this subsystem (14) remains equivalent to subsystem (13) and functionally amounts to the serial connection of the two subsystems (1 1) in DE 101 03 031 A1.
  • Figure 6 shows a third subsystem mode where, unlike the subsystem (14), the connection between the emitter and collector of the switches (21 and 23) electrically connected in series is performed between the collector of the switch (25), the diode cathode (26) and the positive terminal of unipolar capacity (30).
  • the connection between the emitter and collector of the two switches (25 and 27) electrically connected in series now constitutes the connection terminal (y1), while the connection between the switch collector (21), the cathode of the diode (22) and the positive terminal of the unipolar capacity (29) constitutes the connection terminal (y2) of this subsystem (15).
  • this new subsystem (15) remains similar to subsystem (13) and functionally amounts to serial connection of the two subsystems (12) proposed in DE 101 03 031 A1.
  • Figure 7 shows a fourth subsystem modality related to Figures 5 and 6.
  • the switch pairs (21, 23) and (25, 27) are electrically connected in series and each of the diodes (22, 24, 26, 28) are arranged in antiparallel with these switches (21, 23, 25, 27) respectively.
  • Each of the unipolar capacities (29 and 30) is electrically connected in parallel with each pair of switches (21, 23) and (25, 27).
  • the connection between the transmitter and collector of the switches (21 and 23) is linked to the connection between the transmitter and collector of the switches (25 and 27).
  • the junction between the switch collector (21), the cathode of the diode (22) and the positive terminal of the unipolar capacity (29) establishes the connection terminal (y2) of the subsystem (16).
  • the junction between the emitter of the switch (27), the anode of the diode (28) and the negative terminal of the unipolar capacity (30) establishes the terminal (y1) of the subsystem (16).
  • the operation of the subsystem (16) remains equivalent to that detailed for the subsystem (13).
  • this subsystem (16) is equivalent to the serial connection of the subsystem (12) with the subsystem (1 1) proposed in DE 101 03 031 A1.
  • Each of the diodes (42, 44, 46 and 48) is electrically arranged in antiparallel with each of these switches (41, 43, 45 and 47).
  • the unipolar capacity (49) is electrically connected in parallel with each pair of switches (21, 23) and (25, 27).
  • control I I I, I I I and IV:
  • Control I I I the switches (23 and 25) are on and the switches (21 and 27) off.
  • the resulting voltage (Uy21) at the terminals (y2, y1) of the subsystem (17) is equal to zero.
  • the object of this invention is a converter circuit comprising novel two-terminal subsystems that simplify the size and complexity of the converter.
  • a diode may comprise several diodes or a switch based on semiconductor devices may comprise a combination of switches.
  • the invention relates to a converter circuit composed of at least one phase module comprising an upper and lower part or assembly, each of which is formed by at least one subsystem of two upper and lower terminals respectively.
  • the upper assembly is connected at one of its ends to a positive conductor or pole and the other to the alternating current phase or central point of the phase module.
  • the lower assembly is arranged symmetrically to the alternating current phase or central point of the phase module and the other end is connected to a negative conductor or pole.
  • the potential between the positive and negative pole sets the continuous voltage of the phase module of the converter circuit.
  • the first group of subsystems proposed in this invention is characterized by an electrical circuit consisting of four switches based on semiconductor devices, which can be controlled both on and off and are connected electrically in series, four diodes, each connected electrically in antiparallel with each switch, two unipolar storage capacities electrically connected in series with each other and in parallel with the four switches and two additional link or clamp diodes called first diode and second diode.
  • the cathode of the first link diode is connected at the junction between the emitter and collector of the two upper switches and the anode at the junction between the capacities arranged in series.
  • the anode of the second link diode is connected between the junction between the emitter and collector of the two lower switches and the cathode at the junction between the capacities arranged in series.
  • the unipolar capabilities of this subsystem can be composed of one or a set of capacitors that provide a certain total capacity.
  • each of the proposed subsystems integrates an electronic management system correctly associated with its reference potential that allows the correct operation of the subsystem and its communication with one or more higher order control systems.
  • the second group of subsystems proposed in this invention is characterized by an electrical circuit consisting of four switches based on semiconductor devices, which can be controlled both on and off and are connected electrically in series, four diodes, each connected electrically in antiparallel with each switch, two unipolar storage capacities electrically connected in series with each other and in parallel with the four switches and two additional link or clamp switches, called first link switch and second link switch, each with its respective diode in antiparallel.
  • the collector of the first link switch connects the junction between the emitter and collector of the two upper switches while its emitter is connected at the junction between the capacities arranged in series.
  • the emitter of the second link switch connects the junction between the emitter and collector of the two lower switches while its collector is connected at the junction between the capacities arranged in series.
  • the unipolar capabilities of the subsystem can be composed of one or a set of capacitors that provide a given total capacity.
  • each of the proposed subsystems integrates an electronic management system correctly associated with its reference potential that allows the correct operation of the subsystem and its communication with one or more higher order control systems.
  • the third group of subsystems proposed in this invention is characterized by an electrical circuit consisting of four switches based on semiconductor devices, which can be controlled both on and off and are connected electrically in series, four diodes, each connected electrically in antiparallel with each switch, two unipolar storage capacities electrically connected in series with each other and in parallel with the four switches and a first and second additional link or clamp switches oppositely connected in series with their respective antiparallel diodes.
  • the collector of the first link switch connects the junction between the emitter and collector of the two central switches while its emitter is connected to the emitter of the second link switch.
  • the collector of this second link switch is connected between the capacities arranged in series by means of its collector.
  • the unipolar capabilities of the subsystem may be composed of one or a set of capacitors that provide a given total capacity.
  • each of the proposed subsystems integrates an electronic management system correctly associated with its reference potential that allows the correct operation of the subsystem and its communication with one or more higher order control systems.
  • the fourth group of subsystems proposed in this invention is characterized by an electrical circuit consisting of four switches based on semiconductor devices, which can be controlled both on and off and are connected electrically in series, four diodes, each electrically connected in antiparallel with each switch, two capacities of Unipolar storage electrically connected in series with each other and in parallel with the four switches and an additional floating capacity that is connected in parallel with the central switches.
  • the unipolar capabilities of the subsystem may be composed of one or a set of capacitors that provide a given total capacity.
  • each of the proposed subsystems integrates an electronic management system correctly associated with its reference potential that allows the correct operation of the subsystem and its communication with one or more higher order control systems.
  • the set of subsystems that integrate the upper and lower part of the phase module into the four proposed configurations differ in the location of the electrical circuit connection terminals.
  • the connection between the central switches and the emitter of the lower switch respectively defines each of the two terminals of the upper subsystem and the collector of the upper switch and the connection between the two central switches defines each of the two terminals of the lower subsystem.
  • the location of these terminals can also be made between the central switches and the capacitive midpoint, resulting in a compatible subsystem for both the top and bottom.
  • Figure 1 shows the general diagram of a phase of a converter circuit composed of a set of N distributed subsystems
  • Figure 2 shows a three-phase converter circuit composed of a set of N distributed subsystems
  • FIGS. 3a, 3b, 4, 5, 6, 7, 8 show the known electrical circuits for distributed subsystems
  • Figures 9a, 9b, 10a, 10b, 1 1 a, 1 1 b, 12a and 12b detail the multi-level electrical capacitive mid-circuit circuit sets proposed in this invention for distributed subsystems.
  • Figures 9a and 9b show in detail a first set of electrical diagrams proposed in this invention for the subsystems (90 and 91) corresponding to the converter circuit, consisting of at least one phase module (100) that integrates an upper part or assembly (95 ) and a lower part or assembly (96) formed at least by a subsystem of two upper terminals (90) and a lower one (91) respectively.
  • the upper assembly (95) is connected at one of its ends to a positive conductor or pole (P) and in the other to the alternating current phase (L) or center point of the phase module.
  • the Lower assembly (96) is arranged symmetrically to the alternating current phase (L) or center point of the phase module and the other end is connected to a negative conductor or pole (N).
  • Figure 9a are characterized by an electrical circuit consisting of four switches (57, 55, 53 and 51) based on semiconductor devices, which can be controlled both on and off and are connected electrically in series, four diodes (58 , 56, 54 and 52), each electrically connected in antiparallel with each switch (57, 55, 53 and 51), two unipolar storage capacities (76 and 75) electrically connected in series with each other and in parallel with the four switches (57, 55, 53 and 51) and two additional link or clamp diodes (70a and 68a).
  • the diode cathode (70a) is connected between the switch emitter junction (57) and the switch manifold (55) and the anode at the junction (Po) between the capacities (76 and 75).
  • This junction point between both capacities (76 and 75) is defined as (Po) or capacitive midpoint.
  • the diode anode (68a) is connected between the switch emitter junction (53) and the switch manifold (51) and the cathode in the junction (Po) between the capacities (76 and 75).
  • the positive capacity terminal (76) is connected to the switch manifold (57) and the negative capacity terminal (75) is connected to the emitter of the switch (51).
  • the terminal (y2) is connected at the junction between the switch emitter (55), the switch manifold (53), the diode anode (56) and the diode cathode (54) .
  • the terminal (y1) is connected at the junction between the emitter of the switch (51), the negative terminal of the unipolar capacity (75) and the anode of the diode (52).
  • each of the lower subsystems (91) detailed in Figure 9b is characterized by an electrical circuit consisting of four switches (59, 61, 63 and 65) based on semiconductor devices, which can be controlled both when switched on as in the shutdown and four diodes (60, 62, 64 and 66) are connected electrically in series, each electrically connected in antiparallel with each switch (59, 61, 63 and 65), two unipolar storage capacities (77 and 78) electrically connected in series with each other and in parallel with the four switches (59, 61, 63 and 65) and two additional link or clamp diodes (72a and 74a).
  • the diode cathode (72a) is connected between the switch emitter junction (59) and the switch manifold (61) and the anode at the junction (Po) between the capacities (77 and 78).
  • the anode of the diode (74a) is connected between the switch emitter junction (63) and the switch manifold (65) and the cathode in the junction (Po) between the capacities (77 and 78).
  • This junction point between both capacities (77 and 78) is defined as (Po) or capacitive midpoint.
  • the positive capacity terminal (77) is connected to the switch manifold (59) and the negative capacity terminal (78) is connected to the emitter of the switch (65).
  • the terminal (y2) is connected at the junction between the switch collector (59), the positive terminal of the unipolar capacity (77) and the diode cathode (60).
  • the terminal (y1) is connected at the junction between the emitter of the switch (61), the collector of the switch (63), the anode of the diode (62) and the cathode of the diode (64).
  • the unipolar capacities of both subsystems (76, 75) and (77, 78) may be composed of one or a set of capacitors that provide a given total capacity.
  • each of the proposed subsystems (90 and 91) integrates an electronic management system (80 and 81) correctly associated with its reference potential (Po) that allows the correct operation of the subsystem and its communication (83 and 84) ( 85 and 86) with one or more higher order control systems.
  • This communication (83 and 84) (85 and 86) can be performed using optical fibers or other technologies that allow isolation and proper functionality between the subsystems and the upper control devices.
  • the electrical circuits that are part of the subsystems (90 and 91) detailed in Figures 9a and 9b have the following states or modes of operation:
  • switches (53 and 55) or (61 and 63) are on, while switches (51 and 57) or (59 and 65) are off.
  • the voltage or potential (UC) corresponding to that of the capacity (75) or (77) between the terminals (y2, y1) of the subsystems (90 and 91) respectively is established.
  • the capacities (76 and 75) or (77 and 78) receive or release energy depending on the direction of the current flowing through the subsystem terminals
  • Each of the upper subsystems (90) detailed in Figure 10a is characterized by an electrical circuit consisting of four switches (57, 55, 53 and 51) based on semiconductor devices, which can be controlled both on and off. and four diodes (58, 56, 54 and 52) are electrically connected in series, each electrically connected in antiparallel with each switch (57, 55, 53 and 51), two unipolar storage capacities (76 and 75) connected electrically in series with each other and in parallel with the four switches (57, 55, 53 and 51) and some first and second additional link or clamp switches (69b and 67b) with their respective antiparallel diodes (70b and 68b).
  • the junction between the diode cathode (70b) and the switch manifold (69b) is connected between the switch emitter junction (57) and the switch manifold (55) and the junction between the diode anode (70b) and the emitter of the switch (69b) at the junction (Po) between the capacities (76 and 75).
  • This junction point between both capacities (76 and 75) is defined as (Po) or capacitive midpoint.
  • the junction between the diode anode (68b) and the switch emitter (67b) is connected between the switch emitter junction (53) and the switch manifold (51) and the junction between the diode cathode (68b) and the switch manifold (67b) at the junction (Po) between the capacities (76 and 75).
  • the positive capacity terminal (76) is connected to the switch manifold (57) and the negative capacity terminal (75) is connected to the emitter of the switch (51).
  • the terminal (y2) is connects at the junction between the emitter of the switch (55), the collector of the switch (53), the anode of the diode (56) and the cathode of the diode (54).
  • the terminal (y1) is connected at the junction between the emitter of the switch (51), the negative terminal of the unipolar capacity (75) and the anode of the diode (52).
  • each of the lower subsystems (91) detailed in Figure 10b are characterized by an electrical circuit consisting of four switches (59, 61, 63 and 65) based on semiconductor devices, which can be controlled both in their ignition as in the shutdown and four diodes (60, 62, 64 and 66) are connected electrically in series, each electrically connected in antiparallel with each switch (59, 61, 63 and 65), two unipolar storage capacities (77 and 78) electrically connected in series with each other and in parallel with the four switches (59, 61, 63 and 65) and two additional link or clamp switches (71 b and 73b) with their respective diodes in antiparallel (72b and 74b).
  • junction between the diode cathode (72b) and the switch manifold (71 b) is connected between the switch emitter junction (59) and the switch manifold (61) and the junction between the diode anode (72) and the emitter of the switch (71 b) on the junction (Po) between the capacities (77 and 78).
  • This junction point between both capacities (77 and 78) is defined as (Po) or capacitive midpoint.
  • the junction between the anode of the diode (74b) and the emitter of the switch (73b) is connected between the junction of the emitter of the switch (63) and the collector of the switch (65) and the junction between the cathode of the diode (74b) and the switch manifold (73b) at the junction (Po) between the capacities (77 and 78).
  • the positive capacity terminal (77) is connected to the switch manifold (59) and the negative capacity terminal (78) is connected to the emitter of the switch (65).
  • the terminal (y2) is connected at the junction between the switch collector (59), the positive terminal of the unipolar capacity (77) and the diode cathode (60).
  • the terminal (y1) is connects at the junction between the emitter of the switch (61), the collector of the switch (63), the anode of the diode (62) and the cathode of the diode (64).
  • each of the proposed subsystems (90 and 91) integrates an electronic management system (80 and 81) correctly associated with its reference potential (Po) that allows the correct operation of the subsystem and its communication (83 and 84 ) (85 and 86) with one or more higher order control systems.
  • This communication (83 and 84) (85 and 86) can be performed using optical fibers or other technologies that allow isolation and proper functionality between the subsystems and the upper control devices.
  • - Control III the switches (51, 55 and 69b) or (59, 63 and 73b) are on, while the switches (53, 57 and 67b) or (61, 65 and 71 b) are off.
  • - Control IV the switches (55 and 69) or (63 and 73) are on, while the switches (51, 53, 57 and 67b) or (59, 61, 65 and 71 b) are off.
  • switches (55, 57 and 67b) or (63, 65 and 71 b) are on and switches (51, 53 and 69b) or (59, 61 and 73b) are off.
  • the resulting voltage (Uy21) at the terminals (y2, y1) of the subsystems (90 and 91) corresponds to the sum of the voltages or potentials (UC) of each of the capacities (76 and 75) or (77 and 78 ) respectively.
  • control states II, III, IV, V and VI the energy store formed by the capacities (76 and 75) or (77 and 78) receives or releases energy depending on the direction of the current flowing through of the subsystem terminals.
  • the energy in the capacities (76 and 75) or (77 and 78) remains constant.
  • FIGs 1 1 a and 1 1 b show in detail a third set of electrical diagrams proposed in this invention for the subsystems (90 and 91) corresponding to the converter circuit specified initially.
  • Each of the upper subsystems (90) detailed in Figure 1 1 a are characterized by an electrical circuit consisting of four switches (57, 55, 53 and 51) based on semiconductor devices, which can be controlled both on and on the shutdown and are connected electrically in series, four diodes (58, 56, 54 and 52), each electrically connected in antiparallel with each switch (57, 55, 53 and 51), two unipolar storage capacities (76 and 75) electrically connected in series with each other and in parallel with the four switches (57, 55, 53 and 51) and two additional link or clamp switches (67c and 69c) arranged opposite in series with their respective antiparallel diodes (70c and 68c).
  • the junction between the diode cathode (70c) and the switch manifold (67c) is connected between the switch emitter junction (55) and the switch manifold (53) and the junction between the diode anode (70c) and the emitter of the switch (67c) at the junction between the anode of the diode (68c) and the emitter of the switch (69c).
  • the junction between the diode cathode (68c) and the switch manifold (69c) is connected at the junction (Po) between the capacities (76 and 75). This link point between both capacities (76 and 75) is defined as (Po) or capacitive midpoint.
  • the positive capacity terminal (76) is connected to the switch manifold (57) and the negative capacity terminal (75) is connected to the emitter of the switch (51).
  • the terminal (y2) is connected at the junction between the switch emitter (55), the switch manifold (53), the switch manifold (67c), the diode anode (56), diode cathode (70c) and diode cathode (54).
  • the terminal (y1) is connected at the junction between the emitter of the switch (51), the negative terminal of the unipolar capacity (75) and the anode of the diode (52).
  • each of the lower subsystems (91) detailed in Figure 1 1 b is characterized by an electrical circuit consisting of four switches (59, 61, 63 and 65) based on semiconductor devices, which can be controlled both in their ignition as in the off and four diodes (60, 62, 64 and 66) are connected electrically in series, each electrically connected in antiparallel with each switch (59, 61, 63 and 65), two unipolar storage capacities (77 and 78) connected electrically in series with each other and in parallel with the four switches (59, 61, 63 and 65) and two additional link or clamp switches (71 c and 73c) arranged opposite in series with their respective antiparallel diodes (72c and 74c).
  • the junction between the diode cathode (72c) and the switch manifold (71 c) is connected between the switch emitter junction (61) and the switch manifold (63) and the junction between the diode anode (72c) and the emitter of the switch (71 c) is connected at the junction between the anode of the diode (74c) and the emitter of the switch (73c).
  • the junction of the switch manifold (73c) and the diode cathode (74c) is connected at the junction (Po) between the capacities (77 and 78). This link point between both capacities (77 and 78) is defined as (Po) or capacitive midpoint.
  • the positive capacity terminal (77) is connected to the switch manifold (59) and the negative capacity terminal (78) is connected to the emitter of the switch (65).
  • the terminal (y2) is connected at the junction between the switch manifold (59), the positive terminal of the unipolar capacity (77) and the diode cathode (60 ).
  • the terminal (y1) is connected at the junction between the emitter of the switch (61), the collector of the switch (63), the collector of the switch (71 c), the anode of the diode (62), the cathode of the diode (72c ) and the cathode of the diode (64).
  • the unipolar capacities of both subsystems (76, 75) and (77, 78) represented in Figures 1 1 a and 1 1 b may be composed of one or a set of capacitors that provide a certain total capacity.
  • each of the proposed subsystems (90 and 91) integrates an electronic management system (80 and 81) correctly associated with its reference potential (Po) that allows the correct operation of the subsystem and its communication (83 and 84 ) (85 and 86) with one or more higher order control systems.
  • This communication (83 and 84) (85 and 86) can be done using optical fibers or other technologies that allow isolation and proper functionality between subsystems and superior control devices.
  • the electrical circuits that are part of the subsystems (90 and 91) detailed in Figures 1 1 a and 1 1 b have essentially three operating states:
  • the switches (55 and 57) or (63 and 65) are on and the switches (51, 53, 67c and 69c) or (59, 61, 71 c and 73c) off.
  • the resulting voltage (Uy21) at the terminals (y2, y1) of the subsystems (90 and 91) corresponds to the sum of the voltages or potentials (UC) of each of the capacities (76 and 75) or (77 and 78 ) respectively.
  • the energy store formed by the capacities (76 and 75) or (77 and 78) receives or releases energy depending on the direction of the current flowing through the terminals of the subsystem .
  • FIGS. 12a and 12b show in detail a fourth set of electrical diagrams proposed in this invention for the subsystems (90 and 91) corresponding to the initially specified converter circuit.
  • Each of the upper subsystems (90) detailed in Figure 12a is characterized by an electrical circuit consisting of four switches (57, 55, 53 and 51) based on semiconductor devices, which can be controlled both on and off.
  • diodes 58, 56, 54 and 52 are electrically connected in series, each electrically connected in antiparallel with each switch (57, 55, 53 and 51), two unipolar storage capacities (76 and 75) connected electrically in series with each other and in parallel with the four switches (57, 55, 53 and 51) and an additional floating capacity (74d) arranged in parallel with the switches (55 and 53).
  • the positive capacity terminal (76) is connected to the switch manifold (57) and the negative capacity terminal (75) is connected to the emitter of the switch (51).
  • the link point between both capacities (75 and 76) is defined as (Po) or capacitive midpoint.
  • the Positive Capacity Terminal (74d) is connected at the junction between the switch emitter (57) and the switch manifold (55), while the Negative Terminal is connected at the junction between the switch emitter (53) and the switch manifold (51).
  • the terminal (y2) is connected at the junction between the switch emitter (55), the switch manifold (53), the diode anode (56) and the cathode of the diode (54).
  • the terminal (y1) is connected at the junction between the emitter of the switch (51), the negative terminal of the unipolar capacity (75) and the anode of the diode (52).
  • each of the lower subsystems (91) detailed in Figure 12b is characterized by an electrical circuit consisting of four switches (59, 61, 63 and 65) based on semiconductor devices, which can be controlled both on and off and are electrically connected in series, four diodes (60, 62, 64 and 66), each electrically connected in antiparallel with each switch (59, 61, 63 and 65), two unipolar storage capacities (77 and 78) electrically connected in series with each other and in parallel with the four switches (59, 61, 63 and 65) and an additional floating capacity (79d) arranged in parallel with the switches ( 61 and 63).
  • the positive capacity terminal (77) is connected to the switch manifold (59) and the negative capacity terminal (78) is connected to the emitter of the switch (65).
  • the link point between both capacities (77 and 78) is defined as (Po) or capacitive midpoint.
  • the Positive Capacity Terminal (79d) is connected at the junction between the switch emitter (59) and the switch manifold (61), while the Negative Terminal is connected at the junction between the switch emitter (63) and the switch manifold (65).
  • the terminal (y2) is connected at the junction between the switch collector (59), the positive terminal of the unipolar capacity (77) and the diode cathode (60).
  • the terminal (y1) is connected at the junction between the emitter of the switch (61), the collector of the switch (63), the anode of the diode (62) and the cathode of the diode (64).
  • the unipolar capacities that are part of these subsystems (74d, 76 and 75) and (77, 78 and 79d) represented in Figures 12a and 12b may be composed of one or a set of capacitors that provide a certain total capacity.
  • each of the proposed subsystems (90 and 91) integrates an electronic management system (80 and 81) correctly associated with its reference potential (Po) that allows the correct operation of the subsystem and its communication (83 and 84 ) (85 and 86) with one or more higher order control systems.
  • This communication (83 and 84) (85 and 86) can be performed using optical fibers or other technologies that allow isolation and proper functionality between subsystems and superior control devices.
  • the electrical circuits that are part of the subsystems (90 and 91) detailed in Figures 12a and 12b have the following four operating states:
  • the switches (51 and 55) or (59 and 63) are on, while the switches (53 and 57) or (61 and 65) are off.
  • the voltage or potential (UC) corresponding to that of the capacity (74d) or (79d) between the terminals (y2, y1) of the subsystems (90 and 91) respectively is established.
  • the energy store formed by the capacities (74d) or (79d) receives or releases energy depending on the direction of the current flowing through the terminals of the subsystem, while the energy in the capacities (75 and 76) or (77 and 78) remains constant.
  • the switches (53 and 57) or (61 and 65) are on, while the switches (51 and 55) or (59 and 63) are off.
  • the voltage or potential (UC) is established between the terminals (y2, y1) corresponding to the result of the subtraction between the potentials that group the capacities (76 and 75) or (77 and 78) and their potentials inversely related (74d) or (79d) respectively.
  • the resulting energy store between capacities (74d, 75 and 76) or (77, 78 and 79d) receives or releases energy in function of the direction of the current flowing through the subsystem terminals.
  • switches (55 and 57) or (63 and 65) are on and switches (51 and 53) or (59 and 61) off.
  • the resulting voltage (Uy21) at the terminals (y2, y1) of the subsystems (90 and 91) corresponds to the sum of the voltages or potentials (UC) of each of the capacities (76 and 75) or (77 and 78 ) respectively.
  • the resulting energy store between capacities (75 and 76) or (77 and 78) receives or releases energy depending on the direction of the current flowing through the terminals of the subsystem, while the energy in The capacities (74d) or (79d) remain constant.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)

Abstract

L'invention concerne un circuit convertisseur qui comprend au moins un module de phase qui comporte une partie ou un ensemble supérieur et une autre inférieure formés au moins par un sous-système de deux terminaux supérieur et un autre inférieur, respectivement. Chacun desdits sous-systèmes comprend un circuit électrique multiniveau avec un point central capacitif dont les détails sont indiqués dans la description. L'ensemble supérieur obtenu est connecté au niveau d'une de ses extrémités à un conducteur ou pôle positif et au niveau de son autre extrémité à la phase de courant alternatif ou point central du module de phase. L'ensemble inférieur est disposé de manière symétrique à la phase de courant alternatif ou point central du module de phase et l'autre extrémité est connectée à un conducteur ou pôle négatif. Un ou plusieurs éléments électromagnétiques peuvent éventuellement être utilisés dans les points de connexion avec le conducteur ou pôle positif, le conducteur ou pôle négatif et le point central ou la phase de courant alternatif. Le potentiel entre les pôle positif et négatif établit la tension continue du module de phase du circuit convertisseur.
PCT/ES2009/070606 2009-12-18 2009-12-18 Convertisseur modulaire comprenant des circuits répartis multiniveau de point central capacitif WO2011073466A1 (fr)

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WO2013105156A1 (fr) * 2012-01-13 2013-07-18 富士電機株式会社 Circuit de conversion de puissance multi-niveaux
CN105807754A (zh) * 2014-12-31 2016-07-27 国家电网公司 一种适用于mmc阀基控制器分段控制单元的测试系统
CN105807753A (zh) * 2014-12-31 2016-07-27 国家电网公司 一种适用于mmc阀基控制器的功能测试系统
CN105807752A (zh) * 2014-12-31 2016-07-27 国家电网公司 一种适用于mmc阀基控制器汇总控制单元的测试系统
EP3308456B1 (fr) * 2015-07-29 2020-10-14 Siemens Aktiengesellschaft Changeur de fréquences modulaire à multiples niveaux ainsi que sous-module pour un changeur de fréquences à multiples niveaux

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013105156A1 (fr) * 2012-01-13 2013-07-18 富士電機株式会社 Circuit de conversion de puissance multi-niveaux
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CN105807754A (zh) * 2014-12-31 2016-07-27 国家电网公司 一种适用于mmc阀基控制器分段控制单元的测试系统
CN105807753A (zh) * 2014-12-31 2016-07-27 国家电网公司 一种适用于mmc阀基控制器的功能测试系统
CN105807752A (zh) * 2014-12-31 2016-07-27 国家电网公司 一种适用于mmc阀基控制器汇总控制单元的测试系统
EP3308456B1 (fr) * 2015-07-29 2020-10-14 Siemens Aktiengesellschaft Changeur de fréquences modulaire à multiples niveaux ainsi que sous-module pour un changeur de fréquences à multiples niveaux

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