CN112187082A - Novel high-gain eight-switch nine-level inverter - Google Patents
Novel high-gain eight-switch nine-level inverter Download PDFInfo
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- H02M7/53—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
- H02M7/5387—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 in a bridge configuration
- H02M7/53871—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 in a bridge configuration with automatic control of output voltage or current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The invention relates to a novel high-gain eight-switch nine-level inverter. Comprising a DC voltage sourceU in Switch tubeS 1 、S 2 、S a1 、S a2 、S b1 、S b2 、S b3 AndS b4 capacitor and method for manufacturing the sameC 1 、C 2 AndC 3 diode, and method for manufacturing the sameD 1 、D 2 AndD 3 and a loadR. The invention can realize nine-level output only by eight switching tubes, and the voltage stress of only two switching tubes needs to reach the output voltage amplitude, compared with the prior switch-based switchCompared with a nine-level inverter with a capacitor structure, the number of switching tubes is reduced by one, the number of switching tubes which need to bear high-voltage stress is reduced by half, and the cost and the volume of equipment are reduced. In addition, the amplitude of the output voltage of the high-gain eight-switch nine-level inverter provided by the invention reaches 4UinThe voltage gain is twice of that of the existing nine-level inverter based on the switched capacitor structure, and the grid-connected requirement of a high-voltage-level power grid can be better met.
Description
Technical Field
The invention relates to the field of inversion of power electronic converters, in particular to a novel high-gain eight-switch nine-level inverter.
Background
With the large-scale development of renewable energy sources such as wind power, photovoltaic and the like, the power fluctuation caused by the renewable energy sources to a power grid is a technical problem which needs to be solved urgently at present. The energy storage system can stabilize the power fluctuation of the renewable energy source to a certain extent, enhance the elasticity of a power grid and enlarge the consumption space of the renewable energy source. The high-gain and high-performance inverter is often required when the energy storage system is connected to a power grid, and the multi-level inverter has gained wide attention in the academic and industrial fields due to the advantages of low device stress, low harmonic content of output voltage, low switching frequency and the like.
Conventional multilevel inverters mainly include three types: a midpoint clamp type, a flying capacitor type, and a cascade H-bridge type. The applications of the midpoint clamp type and the flying capacitor type are limited by the unbalanced voltage of the capacitors and the number of the required switching devices. The cascaded H-bridge type has a drawback in that it requires a plurality of independent dc power supplies to generate a large number of level outputs, which increases the cost of the circuit and the complexity of control. The multi-level inverter based on the switched capacitor structure has the advantages that due to the self-voltage-sharing characteristic of the capacitor, more level outputs can be generated by using fewer switching devices and a single direct-current power supply, and the like, so that the multi-level inverter based on the switched capacitor structure is widely researched in the academic world.
The existing scheme is shown in fig. 1, and is a nine-level inverter based on a switched capacitor structure, which has the disadvantages that the boosting capacity is weak, the amplitude of the output voltage is only 2Uin, and the nine-level inverter is limited to a greater extent when applied to a power grid with a higher voltage level; meanwhile, the circuit adopts an H-bridge structure, the voltage stress of four switching tubes needs to reach the amplitude of output voltage, and the voltage stress is large.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a novel high-gain eight-switch nine-level inverter, which can realize nine-level output only by eight switch tubes, wherein the voltage stress of only two switch tubes needs to reach the output voltage amplitude; meanwhile, the amplitude of the output voltage of the inverter provided by the invention reaches 4UinIs based onThe double of the nine-level inverter with the switched capacitor structure can better meet the grid-connected requirement of a high-voltage-level power grid, and has good industrial application prospect.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a novel nine level inverters of eight switches of high gain, includes DC power supply, first electric capacity, second electric capacity, third electric capacity, first diode, second diode, third diode, first switch, second switch, third switch, fourth switch, fifth switch, sixth switch, seventh switch, eighth switch and load, wherein:
the anode of the direct current power supply is connected with the anode of the first diode and the first end of the first switch; the negative electrode of the direct current power supply is connected with the second end of the second switch, the second end of the fourth switch, the cathode of the third diode and the second end of the eighth switch; a first end of the first capacitor is connected with a cathode of the first diode, a first end of the third switch, an anode of the second diode and a first end of the seventh switch; the second end of the first capacitor is connected with the second end of the first switch and the first end of the second switch; a first end of the second capacitor is connected with a cathode of the second diode and a first end of the fifth switch; the second end of the second capacitor is connected with the second end of the third switch, the first end of the fourth switch and the first end of the third capacitor; a second end of the third capacitor is connected with an anode of the third diode and a second end of the sixth switch; a second end of the fifth switch is connected to a second end of the sixth switch and a first end of the load, and a second end of the seventh switch is connected to a first end of the eighth switch and a second end of the load.
In an embodiment of the invention, the switch tubes are all N-channel MOSFETs, first ends of the first switch, the second switch, the third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch and the eighth switch are all drains of the N-channel MOSFETs, and second ends of the first switch, the second switch, the third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch and the eighth switch are sources of the N-channel MOSFETs.
In an embodiment of the present invention, the diodes are all in-line diodes.
In an embodiment of the present invention, the first capacitor, the second capacitor, and the third capacitor are all aluminum electrolytic capacitors, first ends of the first capacitor, the second capacitor, and the third capacitor are all positive terminals of the aluminum electrolytic capacitors, and second ends of the first capacitor, the second capacitor, and the third capacitor are all negative terminals of the aluminum electrolytic capacitors.
In an embodiment of the invention, the capacitance values of the first capacitor, the second capacitor and the third capacitor are all equal.
In an embodiment of the present invention, the inverter can achieve nine-level output only by using eight switching tubes, and the voltage stress of only two switching tubes needs to reach the output voltage amplitude.
In one embodiment of the present invention, the output voltage of the inverter has a magnitude four times the input voltage.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, nine-level output can be realized only by eight switching tubes, and only the voltage stress of two switching tubes needs to reach the output voltage amplitude, compared with the existing nine-level inverter based on a switched capacitor structure, the number of the switching tubes is reduced by one, the number of the switching tubes needing to bear high voltage stress is reduced by half, and the cost and the volume of equipment are reduced; in addition, the amplitude of the output voltage of the high-gain eight-switch nine-level inverter provided by the invention reaches 4UinThe voltage gain is twice of that of the existing nine-level inverter based on the switched capacitor structure, and the grid-connected requirement of a high-voltage-level power grid can be better met.
Drawings
Fig. 1 is a circuit diagram of a nine-level inverter based on a switched capacitor structure;
fig. 2 is a circuit diagram of a novel high-gain eight-switch nine-level inverter provided by the invention;
fig. 3 is a working mode diagram of the novel high-gain eight-switch nine-level inverter provided by the invention when outputting different levels;
fig. 4 is a diagram of modulation waveforms and switching states of a novel high-gain eight-switch nine-level inverter provided by the present invention when outputting different levels;
fig. 5 is a modulation logic diagram of the novel high-gain eight-switch nine-level inverter provided by the invention when controlling the on-off of each switch tube;
fig. 6 is a simulation result diagram of simulation verification of the novel high-gain eight-switch nine-level inverter provided by the invention in PSIM software;
wherein the reference numbers are as follows:
Uina DC power supply; c1A first capacitor; c2A second capacitor; c3A third capacitor; d1A first diode; d2A second diode; d3A third diode; s1A first switch; s2A second switch; sa1A third switch; sa2A fourth switch; s, Sb1A fifth switch; s, Sb2A sixth switch; s, Sb3A seventh switch; sb4An eighth switch; r, pure resistive load.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a novel high-gain eight-switch nine-level inverter. Mainly comprises a DC voltage source UinSwitch tube module S1、S2、Sa1、Sa2、Sb1、Sb2、Sb3And Sb4Capacitor C1、C2And C3Diode D1、D2And D3And a load R. The invention can realize nine-level output only by eight switching tubes, and the voltage stress of only two switching tubes needs to reach the output voltage amplitude, compared with the existing nine-level inverter based on a switched capacitor structure, the number of the switching tubes is reduced by one, the number of the switching tubes needing to bear high voltage stress is reduced by half, and the cost and the volume of equipment are reduced. In addition, the amplitude of the output voltage of the high-gain eight-switch nine-level inverter provided by the invention reaches 4UinThe voltage gain is twice of that of the existing nine-level inverter based on the switched capacitor structure, and the grid-connected requirement of a high-voltage-level power grid can be better met. The above shows that the invention has good industrial application prospect.
As shown in fig. 2, a novel embodiment of a high-gain eight-switch nine-level inverter according to the present invention includes a dc power source UinA first capacitor C1A second capacitor C2A third capacitor C3A first diode D1A second diode D2A third diode D3A first switch S1A second switch S2And a third switch Sa1And a fourth switch Sa2The fifth switch Sb1And a sixth switch Sb2Seventh switch Sb3The eighth switch Sb4And a purely resistive load R, wherein:
the DC power supply UinThe anode of the first diode is connected with the anode of the first diode and the first end of the first switch; the DC power supply UinIs connected with the second end of the second switch, the second end of the fourth switch, the cathode of the third diode and the second end of the eighth switch; the first capacitor C1Is connected to the cathode of the first diode and the first end of the third switch and the anode of the second diode and the first end of the seventh switch; the first capacitor C1A second end ofThe second end of the first switch is connected with the first end of the second switch; the second capacitor C2Is connected to the cathode of the second diode and the first terminal of the fifth switch; the second capacitor C2And the second end of the third switch, the first end of the fourth switch and the third capacitor C3Is connected with the first end of the first connecting pipe; the third capacitor C3Is connected to the anode of the third diode and the second terminal of the sixth switch.
Specifically, for the novel high-gain eight-switch nine-level inverter provided by the present application, the operation process thereof refers to fig. 3, where fig. 3 contains an operation mode diagram of the circuit shown in fig. 2 at different output levels; the operation of the novel high-gain eight-switch nine-level inverter is described below with reference to the structure of the inverter provided in the present application:
specifically, when the circuit operates in mode 1, as shown in fig. 2 (a). Switch tube S1、Sa2On, switch S2、Sa1、Sb1、Sb2、Sb3、Sb4And (6) turning off. Input power supply UinAnd C1To C2Charging, at this time C2At a voltage of 2UinOutput voltage UoIs zero.
When the circuit is operating in mode 2, as shown in fig. 2 (b). Switch tube S2、Sa2、Sb1、Sb3Conducting, switching tube S1、Sa1、Sb2、Sb4And (6) turning off. Input power supply UinTo C1Charging, C1Has a voltage of Uin，C2To loads R and C1Discharge, at which time the output voltage UoIs equal to Uin。
When the circuit is operating in mode 3, as shown in fig. 2 (c). Switch tube S2、Sa2、Sb1、Sb4Conducting, switching tube S1、Sa1、Sb2、Sb3And (6) turning off. Input power supply UinTo C1Charging, C1Has a voltage of Uin，C2In a single directionThe load R supplies power, and the output voltage U is at the momentoIs equal to 2Uin。
When the circuit is operating in mode 4, as shown in fig. 2 (d). Switch tube S2、Sa1、Sb1、Sb4Conducting, switching tube S1、Sa2、Sb2、Sb3And (6) turning off. Input power supply UinTo C1Charging, C1Has a voltage of Uin，C1And C2Supply power to the load R together, the output voltage U being presentoIs equal to 3Uin。
When the circuit operates in mode 5, as shown in fig. 2 (e). Switch tube S1、Sa1、Sb1、Sb4Conducting, switching tube S2、Sa2、Sb2、Sb3And (6) turning off. Input power supply UinAnd C1To C3Charging, C3At a voltage of 2Uin，C1、C2And UinSupply power to the load R together, the output voltage U being presentoIs equal to 4Uin。
When the circuit is operating in mode 6, as shown in fig. 2 (f). Switch tube S1、Sa1Conducting, switching tube S2、Sa2、Sb1、Sb2、Sb3、Sb4And (6) turning off. Input power supply UinAnd C1To C3Charging, at this time C3At a voltage of 2UinOutput voltage UoIs zero.
When the circuit operates in mode 7, as shown in fig. 2 (g). Switch tube S2、Sa1、Sb2、Sb4On, switch S1、Sa2、Sb1、Sb3And (6) turning off. Input power supply UinTo C1Charging, at this time C1Has a voltage of Uin，C3To loads R and C1Discharge, in which the current is reversed and the voltage U is outputoIs at a negative level-Uin。
When the circuit operates in mode 8, as shown in fig. 2 (h). Switch tube S2、Sa1、Sb2、Sb3Is turned on and offClosing pipe S1、Sa2、Sb1、Sb4And (6) turning off. Input power supply UinTo C1Charging, C1Has a voltage of Uin，C3Supplying power to the load R alone, with the output voltage VoIs equal to-2Uin。
When the circuit is operating in mode 9, as shown in fig. 2 (i). Switch tube S2、Sa2、Sb2、Sb3Conducting, switching tube S1、Sa1、Sb1、Sb4And (6) turning off. Input power supply UinTo C1Charging, C1Has a voltage of Uin，C1And C3Supply power to the load R together, the output voltage U being presentoIs equal to-3Uin。
When the circuit is operating in mode 10, as shown in fig. 2 (j). Switch tube S1、Sa2、Sb2、Sb3Conducting, switching tube S2、Sa1、Sb1、Sb4And (6) turning off. Input power supply UinAnd C1To C2Charging, C2At a voltage of 2Uin，C1、C3And UinSupply power to the load R together, the output voltage U being presentoIs equal to-4Uin。
The first capacitor C1A second capacitor C2And a third capacitance C3Are equal;
a first capacitor C1A second capacitor C2And a third capacitance C3The value of (A) is not specially limited and is selected according to actual needs;
the voltage gain of the novel high-gain eight-switch nine-level inverter in this embodiment is calculated as follows:
the switching state of the switching tube can be obtained according to the operating mode shown in fig. 3, as shown in fig. 4. Firstly, calculating the intersection point of a reference sine waveform and a multi-level waveform to obtain the conduction angle theta of a switching tubei(i ═ 1,2,3,4), the calculation formula is as follows:
due to the symmetry of the sine wave, the rest of the conduction angle can be formed by theta1～θ4And (6) obtaining. Secondly, a sine modulation wave e can be adoptedsAnd a linear carrier ± eiAnd (i is 1,2,3 and 4) to generate a control signal of the switch. The expression of the carrier is:
ei＝As sinθi (2)
wherein A issTo modulate the amplitude of the wave, the control signal of each switching tube can be obtained according to the modulation logic diagram shown in fig. 5.
A simulation circuit as shown in fig. 2 is built, and simulation verification is performed in PSIM simulation software, wherein simulation parameters are selected as follows: input DC power supply VinCapacitance value C of 10V1＝C2＝C32200 muF, switching tube switching frequency is 50Hz, load resistance R is 500 omega;
the simulation result at this time is shown in fig. 6, and it can be seen that the output voltage V of the novel high-gain eight-switch nine-level inverteroThe voltage stress of the first capacitor is 20V, the output voltage is nine-level step wave, the amplitude of the step wave is 40V, and the quadruple boosting function is realized.
It is to be noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a novel nine level inverters of eight switches of high gain which characterized in that, includes DC power supply, first electric capacity, second electric capacity, third electric capacity, first diode, second diode, third diode, first switch, second switch, third switch, fourth switch, fifth switch, sixth switch, seventh switch, eighth switch and load, wherein:
the anode of the direct current power supply is connected with the anode of the first diode and the first end of the first switch; the negative electrode of the direct current power supply is connected with the second end of the second switch, the second end of the fourth switch, the cathode of the third diode and the second end of the eighth switch; a first end of the first capacitor is connected with a cathode of the first diode, a first end of the third switch, an anode of the second diode and a first end of the seventh switch; the second end of the first capacitor is connected with the second end of the first switch and the first end of the second switch; a first end of the second capacitor is connected with a cathode of the second diode and a first end of the fifth switch; the second end of the second capacitor is connected with the second end of the third switch, the first end of the fourth switch and the first end of the third capacitor; a second end of the third capacitor is connected with an anode of the third diode and a second end of the sixth switch; a second end of the fifth switch is connected to a second end of the sixth switch and a first end of the load, and a second end of the seventh switch is connected to a first end of the eighth switch and a second end of the load.
2. The novel high-gain eight-switch nine-level inverter according to claim 1, wherein said switching transistors are N-channel MOSFETs, and first ends of said first switch, said second switch, said third switch, said fourth switch, said fifth switch, said sixth switch, said seventh switch and said eighth switch are drains of said N-channel MOSFETs, and second ends of said first switch, said second switch, said third switch, said fourth switch, said fifth switch, said sixth switch, said seventh switch and said eighth switch are sources of said N-channel MOSFETs.
3. The novel high-gain eight-switch nine-level inverter as claimed in claim 1, wherein said diodes are all in-line diodes.
4. The novel high-gain eight-switch nine-level inverter according to claim 1, wherein the first capacitor, the second capacitor and the third capacitor are aluminum electrolytic capacitors, first ends of the first capacitor, the second capacitor and the third capacitor are positive ends of the aluminum electrolytic capacitors, and second ends of the first capacitor, the second capacitor and the third capacitor are negative ends of the aluminum electrolytic capacitors.
5. The novel high-gain eight-switch nine-level inverter as claimed in claim 1, wherein the capacitance values of the first capacitor, the second capacitor and the third capacitor are all equal.
6. The novel high-gain eight-switch nine-level inverter according to claim 1, wherein the inverter only needs eight switching tubes to achieve nine-level output, and wherein only two switching tubes need to achieve output voltage amplitude due to voltage stress.
7. The novel high-gain eight-switch nine-level inverter as claimed in claim 1, wherein the amplitude of the output voltage of the inverter is four times the input voltage.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113037109A (en) * | 2021-03-28 | 2021-06-25 | 哈尔滨理工大学 | Nine-level inverter and nine-level active filter |
| CN114629368A (en) * | 2022-03-10 | 2022-06-14 | 西南交通大学 | Nine level dc-to-ac converter of switched capacitor high gain |
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| CN103701346A (en) * | 2013-12-30 | 2014-04-02 | 阳光电源股份有限公司 | Nine-level inverter |
| JP2017011805A (en) * | 2015-06-18 | 2017-01-12 | 株式会社明電舎 | 9-level power conversion apparatus |
| CN106602913A (en) * | 2016-12-23 | 2017-04-26 | 南京航空航天大学 | 9-level inversion topology circuit |
| CN110138005A (en) * | 2019-05-13 | 2019-08-16 | 郑州大学 | It is a kind of to cascade multi-modal photovoltaic combining inverter and its modulator approach |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113037109A (en) * | 2021-03-28 | 2021-06-25 | 哈尔滨理工大学 | Nine-level inverter and nine-level active filter |
| CN113037109B (en) * | 2021-03-28 | 2022-05-03 | 哈尔滨理工大学 | Nine-level inverter and nine-level active filter |
| CN114629368A (en) * | 2022-03-10 | 2022-06-14 | 西南交通大学 | Nine level dc-to-ac converter of switched capacitor high gain |
| CN114629368B (en) * | 2022-03-10 | 2023-03-21 | 西南交通大学 | Nine level inverter of switched capacitor high gain |
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