CN108306535B - Single-phase eleven-level inverter - Google Patents

Single-phase eleven-level inverter Download PDF

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Publication number
CN108306535B
CN108306535B CN201810330178.0A CN201810330178A CN108306535B CN 108306535 B CN108306535 B CN 108306535B CN 201810330178 A CN201810330178 A CN 201810330178A CN 108306535 B CN108306535 B CN 108306535B
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power electronic
electronic switch
switch tube
tube
switching tube
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CN201810330178.0A
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CN108306535A (en
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陈蓉
黄敏
方刚
卢进军
杨勇
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Goodwe Technologies Co Ltd
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Goodwe Technologies Co Ltd
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    • 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
    • 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
    • H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters

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

Abstract

The invention relates to a single-phase eleven-level inverter, which comprises a power electronic switching tube S 1 、S 2 、S 3 、S 4 、S 5 、Capacitor C 1 、C 2 、C 3 、C 4 . Series capacitance C between input point P and input point N 1 Capacitance C 2 Capacitance C 3 Power electronic switching tube S 1 、Via the connection point P 1 Connected in series to the capacitor C 1 Two ends, power electronic switch tube S 2 、Through the connection point N 1 Connected in series to the capacitor C 3 Two ends, power electronic switch tube S 3 、S 4 、Sequentially via the connection point P 2 Output point A, connection point N 2 Connected in series to the connection point P 1 And a connection point N 1 Between, capacitance C 4 Connected to the connection point P 2 And a connection point N 2 Between, the power electronic switching tube S 5 Connected between the input point P and the output point B, and a power electronic switch tubeConnected between the output point B and the input point N. The invention further increases the number of output voltages, reduces the cost of the inverter, improves the efficiency and has good application prospect.

Description

Single-phase eleven-level inverter
Technical Field
The invention relates to a novel structure of a single-phase 11-level inverter and a control method thereof, which are applied to renewable energy power generation systems (such as photovoltaic power generation, wind power and the like).
Background
At present, renewable energy grid-connected power generation (such as photovoltaic power generation, wind power generation and the like) is widely applied, and the proportion of the renewable energy grid-connected power generation in the total global energy supply is increasingly large. The performance of the inverter, which is an important interface between renewable energy sources and a power grid or a load, directly influences the performance of the whole renewable energy power generation system.
In a renewable energy power generation system, a multi-level inverter has several advantages over a two-level inverter: (1) reducing the voltage stress of the individual devices; (2) common mode voltage is reduced; (3) low switching and conduction losses are achieved. Therefore, the multi-level inverter is widely used in renewable energy power generation systems.
Among the multi-level inverter structures, the structures truly applied in industrial products are multi-level structures such as cascade H-bridge structures, neutral point clamped structures, flying capacitors and the like. The above multi-level structure has respective advantages and disadvantages. For multilevel inverters, if more voltage levels are required to be output, the number of clamp diodes required by a neutral point clamped structure multilevel structure is significantly increased, the capacitance in the flying capacitor multilevel is greatly increased, and the number of isolation transformers in the cascaded H-bridge structure is greatly increased. To overcome the above disadvantages of the multi-level, various hybrid multi-level structures have been proposed, such as active diode clamp type multi-level, T-type diode clamp type multi-level, and the like. Although the multi-level topology mentioned above uses a smaller number of components to achieve a greater number of output voltage levels, its structure is substantially similar to an active diode clamped multi-level structure, with no obvious performance advantages. Accordingly, new inverter topologies need to be developed for the purpose of further increasing the number of output voltages of the multi-level inverter and reducing the components of the multi-level inverter.
Disclosure of Invention
The object of the present invention is to provide a single-phase eleven-level inverter capable of further increasing the number of output voltages of the multilevel inverter and minimizing the components of the multilevel inverter.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a single-phase eleven-level inverter comprises a power electronic switch tube S 1 Power electronic switch tubePower electronic switching tube S 2 Power electronic switching tube->Power electronic switching tube S 3 Power electronic switching tube->Power electronic switching tube S 4 Power electronic switching tube->Power electronic switching tube S 5 Power electronic switching tube->Capacitor C 1 Capacitance C 2 Capacitance C 3 And capacitor C 4 The method comprises the steps of carrying out a first treatment on the surface of the The single-phase eleven-level inverter is provided with an input end formed by an input point P and an input point N and an output end formed by an output point A and an output point B; the single phase eleven levelThe input voltage of the inverter is V dc ；
The power electronic switch tube S 1 Is connected with the input point P, and the power electronic switch tube S 1 Source electrode of (c) and said power electronic switching tubeIs connected to form a connection point P 1 The power electronic switch tube>The source of (2) constitutes the connection point O 1 The power electronic switch tube S 2 The drain electrode of (a) forms a connection point O 2 The power electronic switch tube S 2 Is connected with the source of the power electronic switch tube>Is connected to form a connection point N 1 The power electronic switch tube>Is connected with the input point N, the capacitor C 1 Connected to the input point P and the connection point O 1 Between, the capacitance C 2 Is connected to the connection point O 1 And connection point O 2 Between, the capacitance C 3 Is connected to the connection point O 2 And the power electronic switching tube S between the input point N 3 Is connected with the junction P 1 Is connected with the power electronic switch tube S 3 Source of (c) and said power electronic switching tube S 4 Is connected to form a connection point P 2 The power electronic switch tube S 4 Is connected with the source of the power electronic switch tube>Is connected to the drain of the output point A, the power electronic switching tube +.>Is connected with the source of the power electronic switch tube>Is connected to form a connection point N 2 The power electronic switch tube>Is connected with the connecting point N 1 Is connected with the capacitor C 4 Connected to the connection point P 2 And the connection point N 2 Between said power electronic switching tubes +.>Is connected to the drain of the input point P, the power electronic switching tube +.>Is connected with the output point B, the power electronic switch tube S 5 Is connected with the output point B, the power electronic switch tube S 5 Is connected to the input point N.
Preferably, the power electronic switching tube S 1 The power electronic switch tubeThe power electronic switch tube S 2 Said power electronic switching tube->The power electronic switch tube S 3 Said power electronic switching tube->The power electronic switch tube S 4 Said power electronic switching tube->The power electronic switch tube S 5 Said power electronic switching tube->Insulated gate bipolar transistors are used.
In the single-phase eleven-level inverter, the power electronic switching tube S 1 Drive signal of (c) and said power electronic switching tubeThe driving signals of the power electronic switch tube S are complementary signals 2 Driving signal of (2) and said power electronic switching tube +.>The driving signals of the power electronic switch tube S are complementary signals 3 Drive signal of (c) and said power electronic switching tubeThe driving signals of the power electronic switch tube S are complementary signals 4 Driving signal of (2) and said power electronic switching tube +.>The driving signals of the power electronic switch tube S are complementary signals 5 Driving signal of (2) and said power electronic switching tube +.>Is a complementary signal.
The single-phase eleven-level inverter has 16 states V 0 To V 15 ；
State V 0 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 4 Turn-off the power electronic switching tube S 5 Conduction, output electricity of the single-phase eleven-level inverterPressure V out Is 0;
state V 1 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 5 Conduction, the power electronic switch tube S 3 The power electronic switch tube S 4 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is V (V) dc /5；
State V 2 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 Turn-off the power electronic switching tube S 4 The power electronic switch tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is 2V dc /5；
State V 3 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 4 Turn-off the power electronic switching tube S 3 The power electronic switch tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is 2V dc /5；
State V 4 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 4 The power electronic switch tube S 5 Conduction, the power electronic switch tube S 3 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is 3V dc /5；
State V 5 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 5 Conduction, the power electronic switch tube S 4 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is 3V dc /5；
State V 6 : the power electronic switch tube S 1 The power electronic switch tube S 2 Turn off the power electronic switchClosing tube S 3 The power electronic switch tube S 4 The power electronic switch tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is 4V dc /5；
State V 7 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 4 The power electronic switch tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is V (V) dc ；
State V 8 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 4 Conduction, the power electronic switch tube S 5 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is 0;
state V 9 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 5 Conduction-off, the power electronic switch tube S 3 The power electronic switch tube S 4 Conducting, the output voltage V of the single-phase eleven-level inverter out Is of the order of-V dc /5；
State V 10 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 Conduction, the power electronic switch tube S 4 The power electronic switch tube S 5 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is of the order of-2V dc /5；
State V 11 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 4 Conduction, the power electronic switch tube S 3 The power electronic switch tube S 5 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is of the order of-2V dc /5；
State V 12 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 4 The power electronic switch tube S 5 Turn-off the power electronic switching tube S 3 Conducting, the output voltage V of the single-phase eleven-level inverter out is-3V dc /5；
State V 13 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 5 Turn-off the power electronic switching tube S 4 Conducting, the output voltage V of the single-phase eleven-level inverter out is-3V dc /5；
State V 14 : the power electronic switch tube S 1 The power electronic switch tube S 2 Conduction, the power electronic switch tube S 3 The power electronic switch tube S 4 The power electronic switch tube S 5 Turn-off, the output voltage V of the single-phase eleven-level inverter out is-4V dc /5；
State V 15 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 4 Turn-off the power electronic switching tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is of the order of-V dc /。
The capacitor C 1 Is controlled to be V dc 5, the capacitor C 2 Is controlled to 3V dc 5, the capacitor C 3 Is controlled to be V dc 5, the capacitor C 3 Is controlled to 4V dc /5。
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the topology structure of the invention can realize 11-level output by only 10 power electronic switching tubes, thereby greatly reducing the number of the power electronic switching tubes required by the conventional multilevel inverter, greatly reducing the cost of the inverter and improving the efficiency of the inverter, and having good application prospect in renewable energy power generation systems.
Drawings
Fig. 1 is a circuit diagram of a single-phase eleven-level inverter of the present invention.
FIG. 2 shows a single-phase eleven-level inverter according to the present invention in state V 0 The current flow below is schematically shown.
FIG. 3 shows a single-phase eleven-level inverter according to the present invention in state V 1 The current flow below is schematically shown.
FIG. 4 shows a single-phase eleven-level inverter according to the present invention in state V 2 The current flow below is schematically shown.
FIG. 5 shows a single-phase eleven-level inverter according to the present invention in state V 3 The current flow below is schematically shown.
FIG. 6 shows a single-phase eleven-level inverter according to the present invention in state V 4 The current flow below is schematically shown.
FIG. 7 shows a single-phase eleven-level inverter according to the present invention in state V 5 The current flow below is schematically shown.
FIG. 8 shows a single-phase eleven-level inverter according to the present invention in state V 6 The current flow below is schematically shown.
FIG. 9 shows a single-phase eleven-level inverter according to the present invention in state V 7 The current flow below is schematically shown.
FIG. 10 shows a single-phase eleven-level inverter according to the present invention in state V 8 The current flow below is schematically shown.
FIG. 11 shows a single-phase eleven-level inverter according to the present invention in state V 9 The current flow below is schematically shown.
FIG. 12 shows a single-phase eleven-level inverter according to the present invention in state V 10 The current flow below is schematically shown.
FIG. 13 shows a single-phase eleven-level inverter according to the present invention in state V 11 The current flow below is schematically shown.
FIG. 14 shows a single-phase eleven-level inverter according to the present invention in state V 12 Current flow direction underSchematic diagram.
FIG. 15 shows a single-phase eleven-level inverter according to the present invention in state V 13 The current flow below is schematically shown.
FIG. 16 shows a single-phase eleven-level inverter according to the present invention in state V 14 The current flow below is schematically shown.
FIG. 17 shows a single-phase eleven-level inverter according to the present invention in state V 15 The current flow below is schematically shown.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings.
Embodiment one: as shown in figure 1, a single-phase eleven-level inverter comprises a power electronic switching tube S 1 Power electronic switch tubePower electronic switching tube S 2 Power electronic switching tube->Power electronic switching tube S 3 Power electronic switching tube->Power electronic switching tube S 4 Power electronic switching tube->Power electronic switching tube S 5 Power electronic switching tube->Capacitor C 1 Capacitance C 2 Capacitance C 3 And capacitor C 4 . The single-phase eleven-level inverter has an input terminal constituted by an input point P and an input point N and an output terminal constituted by an output point a and an output point B.
The specific structure of the single-phase eleven-level inverter is as follows: power electronic switching tube S 1 Is connected with the input point P, and is poweredElectronic switching tube S 1 Source electrode of (C) and power electronic switch tubeIs connected to form a connection point P 1 Power electronic switching tube->The source of (2) constitutes the connection point O 1 Power electronic switching tube S 2 The drain electrode of (a) forms a connection point O 2 Power electronic switching tube S 2 Source electrode and power electronic switch tube>Is connected to form a connection point N 1 Power electronic switching tube->Is connected to the input point N. DC bus consists of capacitor C 1 Capacitance C 2 And capacitor C 3 In series, i.e. capacitor C 1 Connected to the input point P and the connection point O 1 Between, capacitance C 2 Connected to the connection point O 1 And connection point O 2 Between, capacitance C 3 Connected to the connection point O 2 And an input point N. Power electronic switching tube S 3 Drain of (c) and connection point P 1 Is connected with a power electronic switch tube S 3 Source electrode of (C) and power electronic switch tube S 4 Is connected to form a connection point P 2 Power electronic switching tube S 4 Source electrode and power electronic switch tube>Is connected to the drain of the power electronic switching tube and to the output point A>Source electrode and power electronic switch tube>Is connected to form a connection point N 2 Power electronic switching tube->Source and connection point N of (2) 1 Is connected with each other. Capacitor C 4 Connected to the connection point P 2 And a connection point N 2 Between them. Power electronic switching tube->Is connected with the drain electrode of the input point P, the power electronic switch tube +.>The source electrode of (a) is connected with the output point B, and the power electronic switch tube S 5 The drain electrode of (a) is connected with the output point B, and the power electronic switch tube S 5 Is connected to the input point N.
Above power electronic switch tube S 1 Power electronic switch tubePower electronic switching tube S 2 Power electronic switching tube S 2 Power electronic switching tube S 3 Power electronic switching tube->Power electronic switching tube S 4 Power electronic switching tube->Power electronic switching tube S 5 Power electronic switching tube->Insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBTs) are used.
In the single-phase eleven-level inverter, the input voltage at the input terminal is V dc And power electronic switch tube S 1 Drive signal and power electronic switching tube of (a)The driving signals of the power electronic switch tube S are complementary signals 2 Driving signal and power electronic switching tube>The driving signals of the power electronic switch tube S are complementary signals 3 Driving signal and power electronic switching tube>The driving signals of the power electronic switch tube S are complementary signals 4 Driving signal and power electronic switching tube>The driving signals of the power electronic switch tube S are complementary signals 5 Driving signal and power electronic switching tube>Is a complementary signal.
The single-phase eleven-level inverter has 16 states V 0 To V 15 The state and the inverter output voltage are shown in Table 1 (N point is used as reference voltage), wherein "1" represents the power electronic switching tube being turned on and "0" represents the power electronic switching tube being turned off, the capacitor C 1 Is controlled to be V dc Capacitance C/5 2 Is controlled to 3V dc Capacitance C/5 3 Is controlled to be V dc Capacitance C/5 3 Is controlled to 4V dc /5。
Table 1 relationship of inverter output voltage to inverter switching state
Status of S 1 S 2 S 3 S 4 S 5 Output voltage V out
V 0 0 0 0 0 1 0
V 1 1 1 0 0 1 V dc /5
V 2 0 0 0 1 1 2V dc /5
V 3 0 0 1 0 1 2V dc /5
V 4 1 1 0 1 1 3V dc /5
V 5 1 1 1 0 1 3V dc /5
V 6 0 0 1 1 1 4V dc /5
V 7 1 1 1 1 1 V dc
V 8 1 1 1 1 0 0
V 9 0 0 1 1 0 -V dc /5
V 10 1 1 1 0 0 -2V dc /5
V 11 1 1 0 1 0 -2V dc /5
V 12 0 0 1 0 0 -3V dc /5
V 13 0 0 0 1 0 -3V dc /5
V 14 1 1 0 0 0 -4V dc /5
V 15 0 0 0 0 1 -V dc
State V 0 : as shown in fig. 2, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 3 Power electronic switching tube S 4 Switch off, power electronic switch tube S 5 Output of a conductive, single-phase eleven-level inverterVoltage V out Is 0.
State V 1 : as shown in fig. 3, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 5 Conduction, power electronic switching tube S 3 Power electronic switching tube S 4 Output voltage V of single-phase eleven-level inverter out Is V (V) dc /5。
State V 2 : as shown in fig. 4, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 3 Switch off, power electronic switch tube S 4 Power electronic switching tube S 5 Output voltage V of on-state, single-phase eleven-level inverter out Is 2V dc /5。
State V 3 : as shown in fig. 5, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 4 Switch off, power electronic switch tube S 3 Power electronic switching tube S 5 Output voltage V of on-state, single-phase eleven-level inverter out Is 2V dc /5。
State V 4 : as shown in fig. 6, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 4 Power electronic switching tube S 5 Conduction, power electronic switching tube S 3 Output voltage V of single-phase eleven-level inverter out Is 3V dc /5。
State V 5 : as shown in fig. 7, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 3 Power electronic switching tube S 5 Conduction, power electronic switching tube S 4 Output voltage V of single-phase eleven-level inverter out Is 3V dc /5。
State V 6 : as shown in fig. 8, a power electronic switching tube S 1 Power electronic switching tube S 2 Switch off, power electronic switch tube S 3 Power electronic switching tube S 4 Power electronic switch tubeS 5 Output voltage V of on-state, single-phase eleven-level inverter out Is 4V dc /5。
State V 7 : as shown in fig. 9, the power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 3 Power electronic switching tube S 4 Power electronic switching tube S 5 Output voltage V of on-state, single-phase eleven-level inverter out Is V (V) dc 。
State V 8 : as shown in fig. 10, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 3 Power electronic switching tube S 4 Conduction, power electronic switching tube S 5 Output voltage V of single-phase eleven-level inverter out Is 0.
State V 9 : as shown in fig. 11, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 5 Conduction switch-off, power electronic switch tube S 3 Power electronic switching tube S 4 Output voltage V of on-state, single-phase eleven-level inverter out Is of the order of-V dc /5。
State V 10 : as shown in fig. 12, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 3 Conduction, power electronic switching tube S 4 Power electronic switching tube S 5 Output voltage V of single-phase eleven-level inverter out Is of the order of-2V dc /5。
State V 11 : as shown in fig. 13, the power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 4 Conduction, power electronic switching tube S 3 Power electronic switching tube S 5 Output voltage V of single-phase eleven-level inverter out Is of the order of-2V dc /5。
State V 12 : as shown in fig. 14, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 4 Power electronic switching tube S 5 Switch off, power electronic switch tube S 3 Output voltage V of on-state, single-phase eleven-level inverter out is-3V dc /5。
State V 13 : as shown in fig. 15, the power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 3 Power electronic switching tube S 5 Switch off, power electronic switch tube S 4 Output voltage V of on-state, single-phase eleven-level inverter out is-3V dc /5。
State V 14 : as shown in fig. 16, the power electronic switching tube S 1 Power electronic switching tube S 2 Conduction, power electronic switching tube S 3 Power electronic switching tube S 4 Power electronic switching tube S 5 Output voltage V of single-phase eleven-level inverter out is-4V dc /5。
State V 15 : as shown in fig. 17, a power electronic switching tube S 1 Power electronic switching tube S 2 Power electronic switching tube S 3 Power electronic switching tube S 4 Switch off, power electronic switch tube S 5 Output voltage V of on-state, single-phase eleven-level inverter out Is of the order of-V dc /。
The single-phase eleven-level inverter can further improve the number of multi-level inversion output levels (when components are unchanged), greatly improve the performance of the inverter and reduce the size of the output filter inductance of the inverter, thereby further improving the efficiency of the inverter, and has good application prospect in a renewable energy power generation system.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims (5)

1. A single-phase eleven-level inverter,the method is characterized in that: the single-phase eleven-level inverter comprises a power electronic switching tube S 1 Power electronic switch tubePower electronic switching tube S 2 Power electronic switching tube->Power electronic switching tube S 3 Power electronic switching tube->Power electronic switching tube S 4 Power electronic switching tube->Power electronic switching tube S 5 Power electronic switching tube->Capacitor C 1 Capacitance C 2 Capacitance C 3 And capacitor C 4 The method comprises the steps of carrying out a first treatment on the surface of the The single-phase eleven-level inverter is provided with an input end formed by an input point P and an input point N and an output end formed by an output point A and an output point B; the input voltage of the single-phase eleven-level inverter is V dc ；
The power electronic switch tube S 1 Is connected with the input point P, and the power electronic switch tube S 1 Source electrode of (c) and said power electronic switching tubeIs connected to form a connection point P 1 The power electronic switch tube>The source of (2) constitutes the connection point O 1 The power electronic switch tube S 2 The drain electrode of (2) constitutes a connection pointO 2 The power electronic switch tube S 2 Is connected with the source of the power electronic switch tube>Is connected to form a connection point N 1 The power electronic switch tube>Is connected with the input point N, the capacitor C 1 Connected to the input point P and the connection point O 1 Between, the capacitance C 2 Is connected to the connection point O 1 And connection point O 2 Between, the capacitance C 3 Is connected to the connection point O 2 And the power electronic switching tube S between the input point N 3 Is connected with the junction P 1 Is connected with the power electronic switch tube S 3 Source of (c) and said power electronic switching tube S 4 Is connected to form a connection point P 2 The power electronic switch tube S 4 Is connected with the source of the power electronic switch tube>Is connected to the drain of the output point A, the power electronic switching tube +.>Is connected with the source of the power electronic switch tube>Is connected to form a connection point N 2 The power electronic switch tube>Is connected with the connecting point N 1 Is connected with the capacitor C 4 Connected to the connection point P 2 And the connection point N 2 Between which are locatedThe power electronic switch tube>Is connected to the drain of the input point P, the power electronic switching tube +.>Is connected with the output point B, the power electronic switch tube S 5 Is connected with the output point B, the power electronic switch tube S 5 Is connected to the input point N.
2. The single-phase eleven-level inverter of claim 1, wherein: the power electronic switch tube S 1 The power electronic switch tubeThe power electronic switch tube S 2 Said power electronic switching tube->The power electronic switch tube S 3 Said power electronic switching tube->The power electronic switch tube S 4 Said power electronic switching tube->The power electronic switch tube S 5 Said power electronic switching tube->Insulated gate bipolar transistors are used.
3. The single-phase eleven-level inverter according to claim 1 or 2, whichIs characterized in that: the power electronic switch tube S 1 Drive signal of (c) and said power electronic switching tubeThe driving signals of the power electronic switch tube S are complementary signals 2 Driving signal of (2) and said power electronic switching tube +.>The driving signals of the power electronic switch tube S are complementary signals 3 Driving signal of (2) and said power electronic switching tube +.>The driving signals of the power electronic switch tube S are complementary signals 4 Driving signal of (2) and said power electronic switching tube +.>The driving signals of the power electronic switch tube S are complementary signals 5 Driving signal of (2) and said power electronic switching tube +.>Is a complementary signal.
4. A single-phase eleven-level inverter according to claim 3, wherein: the single-phase eleven-level inverter has 16 states V 0 To V 15 ；
State V 0 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 4 Turn-off the power electronic switching tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is 0;
state V 1 : the power electronic switch tube S 1 The saidPower electronic switching tube S 2 The power electronic switch tube S 5 Conduction, the power electronic switch tube S 3 The power electronic switch tube S 4 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is V (V) dc /5；
State V 2 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 Turn-off the power electronic switching tube S 4 The power electronic switch tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is 2V dc /5；
State V 3 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 4 Turn-off the power electronic switching tube S 3 The power electronic switch tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is 2V dc /5；
State V 4 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 4 The power electronic switch tube S 5 Conduction, the power electronic switch tube S 3 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is 3V dc /5；
State V 5 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 5 Conduction, the power electronic switch tube S 4 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is 3V dc /5；
State V 6 : the power electronic switch tube S 1 The power electronic switch tube S 2 Turn-off the power electronic switching tube S 3 The power electronic switch tube S 4 The power electronic switch tube S 5 Conduction, the single-phase eleven level is reversedOutput voltage V of the transformer out Is 4V dc /5；
State V 7 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 4 The power electronic switch tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is V (V) dc ；
State V 8 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 4 Conduction, the power electronic switch tube S 5 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is 0;
state V 9 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 5 Conduction-off, the power electronic switch tube S 3 The power electronic switch tube S 4 Conducting, the output voltage V of the single-phase eleven-level inverter out Is of the order of-V dc /5；
State V 10 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 Conduction, the power electronic switch tube S 4 The power electronic switch tube S 5 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is of the order of-2V dc /5；
State V 11 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 4 Conduction, the power electronic switch tube S 3 The power electronic switch tube S 5 Turn-off, the output voltage V of the single-phase eleven-level inverter out Is of the order of-2V dc /5；
State V 12 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switchClosing tube S 4 The power electronic switch tube S 5 Turn-off the power electronic switching tube S 3 Conducting, the output voltage V of the single-phase eleven-level inverter out is-3V dc /5；
State V 13 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 5 Turn-off the power electronic switching tube S 4 Conducting, the output voltage V of the single-phase eleven-level inverter out is-3V dc /5；
State V 14 : the power electronic switch tube S 1 The power electronic switch tube S 2 Conduction, the power electronic switch tube S 3 The power electronic switch tube S 4 The power electronic switch tube S 5 Turn-off, the output voltage V of the single-phase eleven-level inverter out is-4V dc /5；
State V 15 : the power electronic switch tube S 1 The power electronic switch tube S 2 The power electronic switch tube S 3 The power electronic switch tube S 4 Turn-off the power electronic switching tube S 5 Conducting, the output voltage V of the single-phase eleven-level inverter out Is of the order of-V dc /。
5. The single-phase eleven-level inverter according to claim 1 or 2, characterized in that: the capacitor C 1 Is controlled to be V dc 5, the capacitor C 2 Is controlled to 3V dc 5, the capacitor C 3 Is controlled to be V dc 5, the capacitor C 4 Is controlled to 2V dc /5。
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Publication number Priority date Publication date Assignee Title
CN114640265A (en) * 2022-02-25 2022-06-17 山东大学 Multilevel single-phase interphase hybrid topology converter and control method
CN115242114B (en) * 2022-07-08 2023-11-24 江苏科曜能源科技有限公司 Single-phase eleven-level inverter and system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010146637A1 (en) * 2009-06-19 2010-12-23 三菱電機株式会社 Power conversion equipment
CN106169884A (en) * 2016-06-30 2016-11-30 阳光电源股份有限公司 The precharge control method of five-level active neutral-point-clamped type inverter and device
CN106787886A (en) * 2017-03-23 2017-05-31 北京交通大学 Seven level inverse conversion topological structures and seven electrical level inverters
CN106921306A (en) * 2017-03-24 2017-07-04 江苏固德威电源科技股份有限公司 The level three-phase inverter of T-shaped active clamp type five and parallel network reverse electricity generation system
CN206547056U (en) * 2017-03-24 2017-10-10 江苏固德威电源科技股份有限公司 The T-shaped level three-phase inverter of active clamp type five and parallel network reverse electricity generation system
CN107276441A (en) * 2017-07-18 2017-10-20 江苏固德威电源科技股份有限公司 Striding capacitance five-electrical level inverter, phase-shifting control method and grid-connected power generation system
CN107733272A (en) * 2017-11-07 2018-02-23 江苏固德威电源科技股份有限公司 Four level three-phase grid-connected inverters and its modulator approach and electricity generation system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208539800U (en) * 2018-04-13 2019-02-22 江苏固德威电源科技股份有限公司 Single-phase 11 electrical level inverter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010146637A1 (en) * 2009-06-19 2010-12-23 三菱電機株式会社 Power conversion equipment
CN106169884A (en) * 2016-06-30 2016-11-30 阳光电源股份有限公司 The precharge control method of five-level active neutral-point-clamped type inverter and device
CN106787886A (en) * 2017-03-23 2017-05-31 北京交通大学 Seven level inverse conversion topological structures and seven electrical level inverters
CN106921306A (en) * 2017-03-24 2017-07-04 江苏固德威电源科技股份有限公司 The level three-phase inverter of T-shaped active clamp type five and parallel network reverse electricity generation system
CN206547056U (en) * 2017-03-24 2017-10-10 江苏固德威电源科技股份有限公司 The T-shaped level three-phase inverter of active clamp type five and parallel network reverse electricity generation system
CN107276441A (en) * 2017-07-18 2017-10-20 江苏固德威电源科技股份有限公司 Striding capacitance five-electrical level inverter, phase-shifting control method and grid-connected power generation system
CN107733272A (en) * 2017-11-07 2018-02-23 江苏固德威电源科技股份有限公司 Four level three-phase grid-connected inverters and its modulator approach and electricity generation system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王要强 ; 王凯歌 ; 周成龙 ; 袁艺森 ; 李忠文 ; .单相中点箝位开关电容多电平逆变器及其控制.电力自动化设备.2017,(第07期),全文. *

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