CN106899203A - Positive activation type five-electrical level inverter - Google Patents

Positive activation type five-electrical level inverter Download PDF

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Publication number
CN106899203A
CN106899203A CN201710181634.5A CN201710181634A CN106899203A CN 106899203 A CN106899203 A CN 106899203A CN 201710181634 A CN201710181634 A CN 201710181634A CN 106899203 A CN106899203 A CN 106899203A
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China
Prior art keywords
power switch
switch pipe
diode
drain electrode
electrode
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CN201710181634.5A
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CN106899203B (en
Inventor
龚坤珊
李磊
郭伟
严潇
高扬
陶兆俊
管月
陆佳炜
郭志刚
李广强
李福印
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
    • H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
    • H02M5/297—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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 for conversion of frequency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/487—Neutral point clamped inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • 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
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
    • H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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
    • H02M5/2932—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc 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 with automatic control of output voltage, current or power
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Dc-Dc Converters (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

The invention discloses a kind of positive activation type five-electrical level inverter, it is made up of the input DC power, derided capacitors, the level translation unit of positive activation type five, frequency converter, output filter and the output AC load that are sequentially connected；By changing the type of frequency converter, the circuit topology race of halfwave rectifier positive activation type five-electrical level inverter and full-wave rectification positive activation type five-electrical level inverter is obtained.The present invention has power conversion series few, bidirectional power flow, the advantages of output filter front voltage spectral characteristic is good, improve conversion efficiency and power density, volume and weight is reduced, the voltage stress of switching device can be reduced, realize AC load and dc source high frequency electrical isolation.

Description

Positive activation type five-electrical level inverter
Technical field
The invention belongs to Technics of Power Electronic Conversion technical field, particularly a kind of positive activation type five-electrical level inverter.
Background technology
Directly-friendship (DC-AC) converter technique refers to apply power semiconductor, and direct current energy is converted into constant voltage constant frequency hands over A kind of Semiconductor Converting Technology of stream electric energy, abbreviation inversion transformation technique, it is widely used in national defence, industrial and mining enterprises, scientific research institutions, university's reality Test in room and daily life.With the development and application of new energy technology, application of the inversion transformation technique in new energy is also increasingly It is many.
So far, domestic and international power electronics researcher is concentrated mainly on non-electrical for the research of straight-AC-AC converter The level of isolated, low frequency and high frequency electrical isolation formula etc. two is straight-AC-AC converter；For the research of multi-level converter, main collection In many level it is straight-it is straight, straight-hand over and friendship-DC converter, and the research of-AC-AC converter straight for many level is then considerably less, and only Be limited only to non-isolated, low frequency or the isolated straight-many level of friendship type of intermediate frequency it is straight-AC-AC converter, it is and how electric to high frequency isolation type The inverter research of flat two stage power conversion is fewer.
Multi-electrical level inverter mainly has three class topological structures：(1) Diode-clamped inverter, (2) capacitor-clamped type are inverse Become the cascaded inverter of device, (3) with independent DC power supply direct current.Diode-clamped, capacitor-clamped type multi-level inverse conversion Utensil has the advantages that to be applicable and high input voltage high-power inverter occasion：Cascading multiple electrical level with independent DC power supply is inverse Becoming utensil has the advantages that suitable for low input, high output voltage high power contravariant occasion.But it is diode-clamped, capacitor-clamped The many flat inversion transformation techniques of level multiple spot of type exist topological form it is single, without defects such as electrical isolations；Level with independent DC power supply Connection type multi-level inverse conversion technology has that circuit topology complexity input side power factor is low, conversion efficiency is relatively low, power density is low Defect.
High frequency link inversion transformation technique high frequency transformer instead of the Industrial Frequency Transformer in low frequency link inversion transformation technique, overcome The shortcoming of low frequency inversion transformation technique, significantly improves the characteristic of inverter, will replace low frequency link inverter, extensively should obtain With.With science and technology of aviation and avionic fast development, aircraft secondary power supply must be to high power density, high efficiency and module Change direction to develop；In the exploitation of the other renewable sources of energy, it is adaptable to the solar array inverter and fuel in parallel with power network The inversion occasion such as battery inverter and uninterrupted power source, annulus inverter in high frequency is all with a wide range of applications, particularly The inversion occasion that volume, weight to inverter have higher requirements has prior application prospect.
Enter over 10 years, around high frequency link inversion transformation technique, domestic and foreign scholars have done substantial amounts of research work, achieve many Valuable achievement in research.Nineteen ninety S.R.Narayana Prakask et al. propose " unidirectional Buck types high frequency link is inverse Become device ", formed by DC/DC converters and buck types the inverter bridge cascade of high frequency electrical isolation, with unidirectional power stream, three-level work( Rate conversion (DC-HFAC-DC-LFAC), conversion efficiency be high, using traditional PWM technologies when power device switching loss it is big, into The features such as this is high.I.Yamato et al. proposed " two-way Buck types annulus inverter in high frequency " in 1988, and the inverter is by height Frequency electrical isolation inverter is formed with the cascade of Buck types frequency converter, and the frequency converter being made up of four-quadrant power switch exists Any turn-on cycle has two or four power device to simultaneously turn on, and conduction loss is larger.With bidirectional power flow, direct current- The features such as two-layer configuration of high frequency pulse AC-low-frequency ac, efficiency are higher, conduction loss is big.But this " two-way Buck Type annulus inverter in high frequency " is the level of ± Ui two in the voltage that filter inductance front end produces or is ± Ui, 0 three level, it is contemplated that Expand the range of choice of power device under high input voltage occasion, the voltage stress of power switch pipe is low, so this is intrinsic Defect constrains this " two-way Buck types annulus inverter in high frequency " in the application of high input voltage high-power inverter occasion.
And most of many level topological structures of high-frequency isolation pattern studied at present concentrate on centre with DC link Unidirectional Buck types annulus inverter in high frequency.Simply multilevel converter is added in the DC/DC converters of high frequency electrical isolation. The voltage stress of the DC/DC converter breaker in middle pipes of high frequency electrical isolation is simply reduced, and in output inductor front end simultaneously Many level are not realized really, and the voltage stress of the switching tube of Buck type inverter bridges, output inductor electric capacity are not reduced Value is not all reduced.And this many level topologys are proposed on the basis of unidirectional Buck types annulus inverter in high frequency , due to the inherent shortcoming of unidirectional Buck types annulus inverter in high frequency, so this series of many level of high-frequency isolation pattern is opened up Application scenario is flutterred to be restricted.
The content of the invention
It is an object of the invention to provide a kind of positive activation type five-electrical level inverter.
The technical solution for realizing the object of the invention is：A kind of positive activation type five-electrical level inverter, it is defeated by what is be sequentially connected Enter DC power source unit, derided capacitors, the level translation unit of positive activation type five, frequency converter, output filter to be exchanged with output Load is constituted, wherein：
Input dc power source unit is used for input DC power；
Derided capacitors are used for the average partial pressure of dc source that will be input into；
The level translation unit of positive activation type five is used for the level modulation of derided capacitors generation into bipolarity, the high frequency of many level Pulse voltage；
Frequency converter is used to for bipolarity high-frequency pulse voltage to be demodulated to unipolarity low-frequency pulse voltage；
Output filter is used to be filtered treatment to the low-frequency pulse of frequency converter output.
Compared with prior art, its remarkable advantage is the present invention：
(1) in the construction thinking of Clamp many level topology being applied into Buck type inverters, and in input DC power With high-frequency isolation transformer is inserted in AC load, realize the electrical isolation of input side and load-side；High-frequency isolation transformer Use realize the miniaturization of converter, lightweight, improve the efficiency of converter；
(2) compared with traditional " two-way Buck types annulus inverter in high frequency ", the present invention is in output inductor front end energy Five level are accessed, so as to reduce the voltage stress of power switch pipe, the range of choice of power switch pipe, filtered electrical has been widened Electrification capacitance is reduced；The high-voltage large-capacity inversion occasion of electrical isolation is required in civilian, industrial, national defence etc., using this The inversion topological of invention can be very good to adapt to, and be more satisfactory inverter solution；
(3) the high-frequency isolation transformer magnetic core in the present invention can improve change in each switch periods by two-way magnetization The utilization rate of depressor magnetic core；
(4) present invention has power conversion series few (direct current DC- high-frequency ac HFAC- low-frequency ac LFAC), two-way work( Rate stream, the advantages of output filter front voltage spectral characteristic is good, thus improves conversion efficiency and power density, reduces body Product and weight.
Brief description of the drawings
Fig. 1 is the circuit topological structure figure of positive activation type five-electrical level inverter of the present invention.
Fig. 2 is the circuit topological structure figure of halfwave rectifier positive activation type five-electrical level inverter of the present invention.
Fig. 3 is the circuit topological structure figure of full-wave rectification positive activation type five-electrical level inverter of the present invention.
Specific embodiment
With reference to Fig. 1-Fig. 3, a kind of positive activation type five-electrical level inverter of the invention, by the input DC power list being sequentially connected Unit 1, derided capacitors 2, the level translation unit 3 of positive activation type five, frequency converter 4, output filter 5 and the output structure of AC load 6 Into, wherein：
Input dc power source unit 1 is used for input DC power；
Derided capacitors 2 are used for the average partial pressure of dc source that will be input into；
The level translation unit 3 of positive activation type five is used for the level modulation that produces derided capacitors 2 into bipolarity, the height of many level Frequency pulse voltage；
Frequency converter 4 is used to for bipolarity high-frequency pulse voltage to be demodulated to unipolarity low-frequency pulse voltage；
Output filter 5 is used to be filtered treatment to the low-frequency pulse of the output of frequency converter 4.
Further, the input dc power source unit 1 include input DC power Ui, input dc power source unit Ui with Derided capacitors are connected.
Further, the derided capacitors 2 include the first derided capacitors C1, the second derided capacitors C2, the 3rd derided capacitors C3 and the 4th derided capacitors C4；The positive pole of the first derided capacitors C1 is connected with the positive pole of input dc power source unit Ui, first point The negative pole of voltage capacitance C1 is connected with the positive pole of the second derided capacitors C2, the negative pole and the 3rd derided capacitors C3 of the second derided capacitors C2 Positive pole connection, the negative pole of the 3rd derided capacitors C3 is connected with the positive pole of the 4th derided capacitors C4, and the 4th derided capacitors C4's bears Pole is connected with the reference negative pole of input DC power Ui.
Further, the level translation unit 3 of the positive activation type five include the first power switch tube S 1, the first diode D1, Second power switch tube S 2, the second diode D2, the 3rd power switch tube S 3, the 3rd diode D3, the 4th power switch tube S 4, 4th diode D4, the 5th power switch tube S 5, the 5th diode D5, the 6th power switch tube S 6, the 6th diode D6, the 7th Power switch tube S 7, the 7th diode D7, the 8th power switch tube S 8, the 8th diode D8, the 9th power switch tube S the 9, the 9th Diode D9, the tenth power switch tube S 10, the tenth diode D10, the 11st diode D11, the 12nd diode D12, the tenth Three diode D13, the 14th diode D14, the 15th diode D15, the 16th diode D16, the 17th diode D17, 18th diode D18, high frequency isolation type transformer the first primary side windings of T N1, high frequency isolation type transformer the second primary side windings of T N2 and high frequency isolation type transformer T vice-side windings；
The drain electrode of first power switch tube S 1 is connected with the positive pole of the first derided capacitors C1, and the first diode D1 is anti- The two ends of the first power switch tube S 1, the i.e. negative electrode of the first diode D1 is parallel to be connected with the drain electrode of the first power switch tube S 1, The anode of the first diode D1 is connected with the source electrode of the first power switch tube S 1, the source electrode and the second work(of the first power switch tube S 1 The drain electrode connection of rate switching tube S2, the second diode D2 inverse parallels are in the two ends of the second power switch tube S 2, i.e. the second diode D2 Negative electrode be connected with the drain electrode of the second power switch tube S 2, the source electrode of the anode of the second diode D2 and the second power switch tube S 2 Connection, the source electrode of the second power switch tube S 2 is connected with the drain electrode of the 3rd power switch tube S 3, the 3rd diode D3 inverse parallels in The two ends of 3rd power switch tube S 3, the i.e. negative electrode of the 3rd diode D3 is connected with the drain electrode of the 3rd power switch tube S 3, and the three or two The anode of pole pipe D3 is connected with the source electrode of the 3rd power switch tube S 3, the source electrode and the first primary side winding of the 3rd power switch tube S 3 The Same Name of Ends connection of N1, the non-same polarity of the first primary side winding N1 is connected with the drain electrode of the 4th power switch tube S 4, the four or two pole Pipe D4 inverse parallels are in the drain electrode of the negative electrode and the 4th power switch tube S 4 of the two ends of the 4th power switch tube S 4, i.e. the 4th diode D4 Connection, the anode of the 4th diode D4 is connected with the source electrode of the 4th power switch tube S 4, the source electrode of the 4th power switch tube S 4 and The negative pole connection of the 4th derided capacitors C4, the drain electrode of the 5th power switch tube S 5 is connected with the positive pole of the first derided capacitors C1, the Five diode D5 inverse parallels are in the negative electrode and the 5th power switch tube S 5 of the two ends of the 5th power switch tube S 5, i.e. the 5th diode D5 Drain electrode connection, the anode of the 5th diode D5 is connected with the source electrode of the 5th power switch tube S 5, the 5th power switch tube S 5 Source electrode is connected with the non-same polarity of the second primary side winding N2, the Same Name of Ends of the second primary side winding N2 and the 6th power switch tube S 6 Drain electrode connection, the 6th diode D6 inverse parallels are in the two ends of the 6th power switch tube S 6, the i.e. negative electrode and the 6th of the 6th diode D6 The drain electrode connection of power switch tube S 6, the anode of the 6th diode D6 is connected with the source electrode of the 6th power switch tube S 6, the 6th work( The source electrode of rate switching tube S6 is connected with the drain electrode of the 7th power switch tube S 7, and the 7th diode D7 inverse parallels are in the 7th power switch Pipe S7 two ends, the i.e. negative electrode of the 7th diode D7 is connected with the drain electrode of the 7th power switch tube S 7, the anode of the 7th diode D7 Source electrode with the 7th power switch tube S 7 is connected, and the drain electrode of the source electrode and the 8th power switch tube S 8 of the 7th power switch tube S 7 connects Connect, the 8th diode D8 inverse parallels are opened in the two ends of the 8th power switch tube S 8, the i.e. negative electrode of the 8th diode D8 with the 8th power The drain electrode connection of pipe S8 is closed, the anode of the 8th diode D8 is connected with the source electrode of the 8th power switch tube S 8, the 8th power switch The source electrode of pipe S8 is connected with the negative pole of the 4th derided capacitors C4, drain electrode and the 4th power switch tube S 4 of the 9th power switch tube S 9 Drain electrode connection, the 9th diode D9 inverse parallels are in the two ends of the 9th power switch tube S 9, the i.e. negative electrode of the 9th diode D9 and the The drain electrode connection of nine power switch tube Ss 9, the anode of the 9th diode D9 is connected with the source electrode of the 9th power switch tube S 9, and the 9th The source electrode of power switch tube S 9 is connected with the anode of the 11st diode D11, the negative electrode and the 4th partial pressure of the 11st diode D11 The positive pole connection of electric capacity C4, the drain electrode of the tenth power switch tube S 10 is connected with the positive pole of the second derided capacitors C2, the tenth diode D10 inverse parallels are in the leakage of the negative electrode and the tenth power switch tube S 10 of the two ends of the tenth power switch tube S 10, i.e. the tenth diode D10 Pole connects, and the anode of the tenth diode D10 is connected with the source electrode of the tenth power switch tube S 10, the source of the tenth power switch tube S 10 Pole is connected with the anode of the 12nd diode D12, and the negative electrode of the 12nd diode D12 and the source electrode of the 5th power switch tube S 5 connect Connect, the anode of the 13rd diode D13 is connected with the positive pole of the second derided capacitors C2, the source of negative electrode and the first power switch tube S 1 Pole connects, and the anode of the 14th diode D14 is connected with the positive pole of the 3rd derided capacitors C3, negative electrode and the second power switch tube S 2 Source electrode connection, the anode of the 15th diode D15 is connected with the positive pole of the 4th derided capacitors C4, negative electrode and the 3rd power switch The source electrode connection of pipe S3, the anode of the 16th diode D16 is connected with the drain electrode of the 6th power switch tube S 6, negative electrode and second point The positive pole connection of voltage capacitance C2, the anode of the 17th diode D17 is connected with the drain electrode of the 7th power switch tube S 7, negative electrode and the The positive pole connection of three derided capacitors C3, the anode of the 18th diode D18 is connected with the drain electrode of the 8th power switch tube S 8, negative electrode Positive pole with the 4th derided capacitors C4 is connected；The half waves frequency converter 4 includes the first two-way power switch pipe SAWith Two two-way power switch pipe SB, the Same Name of Ends of vice-side winding and the first two-way power switch pipe SAOne end connection, the first two-way work( Rate switching tube SAThe other end and the second two-way power switch pipe SBOne end connection, the second two-way power switch pipe SBIt is another End is connected with the non-same polarity of vice-side winding.
Further, as shown in Fig. 2 the vice-side winding includes the first vice-side winding N3, the first vice-side winding N3's is same Name end and the first two-way power switch pipe SAOne end connection, the first two-way power switch pipe SAThe other end and the second two-way work( Rate switching tube SBOne end connection, the second two-way power switch pipe SBThe other end and the first vice-side winding N3 non-same polarity connect Connect.
The first two-way power switch pipe SAIncluding the 11st power switch tube Sa, the 19th diode Da, the 12nd work( Rate switching tube Sb, the 20th diode Db, the second two-way power switch pipe SDIncluding the 13rd power switch tube Sc, the 21st Diode Dc, the 14th power switch tube Sd, the 22nd diode Dd, the 11st power switch tube SaDrain electrode and the 19th Diode DaNegative electrode be connected as the first two-way power switch pipe SAOne end, the Same Name of Ends with the first vice-side winding N3 is connected, 12nd power switch tube SbDrain electrode and the 20th diode DbNegative electrode be connected as the first two-way power switch pipe SAIt is another One end, with the second two-way power switch pipe SBConnection, the 11st power switch tube SaSource electrode, the 12nd power switch tube Sb's Source electrode, the 19th diode DaAnode, the 20th diode DbAnode link together；13rd power switch tube Sc's Drain electrode and the 21st diode DcNegative electrode simultaneously with the 12nd power switch tube SbDrain electrode and the 20th diode DbThe moon Extremely it is connected, the 14th power switch tube SdDrain electrode and the 22nd diode DdNegative electrode be connected, while with the first vice-side winding The non-same polarity connection of N3, the 13rd power switch tube ScSource electrode, the 14th power switch tube SdSource electrode, the 21st Pole pipe DcAnode, the 22nd diode DdAnode link together.
The output filter 5 includes output inductor Lf and output filter capacitor Cf；The one of output inductor Lf End simultaneously with the first two-way power switch pipe SAWith the second two-way power switch pipe SBOne end connection, output inductor Lf's The other end is connected with one end of output filter capacitor Cf, and the other end of output filter capacitor Cf and the first vice-side winding N3's is non-same Name end, the second two-way power switch pipe SBThe other end connection；
The output AC load 6 includes AC load ZL, AC load ZLOne end and output filter capacitor Cf one End, the other end connection of output inductor Lf, AC load ZLThe other end be connected with the other end of output filter capacitor Cf.
Further, as shown in figure 3, the vice-side winding includes the first vice-side winding N3 and the second vice-side winding N4, the The Same Name of Ends of one vice-side winding N3 and the first two-way power switch pipe SAOne end connection, the non-same polarity of the first vice-side winding N3 Same Name of Ends with the second vice-side winding N4 is connected, the non-same polarity of the second vice-side winding N4 and the second two-way power switch pipe SB's One end connects.
The first two-way power switch pipe SAIncluding the 11st power switch tube Sa, the 19th diode Da, the 12nd work( Rate switching tube Sb, the 20th diode Db, the second two-way power switch pipe SDIncluding the 13rd power switch tube Sc, the 21st Diode Dc, the 14th power switch tube Sd, the 22nd diode Dd, the 11st power switch tube SaDrain electrode and the 19th Diode DaNegative electrode be connected as the first two-way power switch pipe SAOne end, the Same Name of Ends with the first vice-side winding N3 is connected, 12nd power switch tube SbDrain electrode and the 20th diode DbNegative electrode be connected as the first two-way power switch pipe SAIt is another One end, with the second two-way power switch pipe SBConnection, the 11st power switch tube SaSource electrode, the 12nd power switch tube Sb's Source electrode, the 19th diode DaAnode, the 20th diode DbAnode link together；13rd power switch tube Sc's Drain electrode and the 21st diode DcNegative electrode simultaneously be connected with the non-same polarity of the second vice-side winding N4, the 14th power switch Pipe SdDrain electrode and the 22nd diode DdNegative electrode be connected, while with the 12nd power switch tube SbDrain electrode and the 20th Diode DbNegative electrode be connected, the 13rd power switch tube ScSource electrode, the 14th power switch tube SdSource electrode, the 21st Diode DcAnode, the 22nd diode DdAnode link together.
The output filter includes output inductor Lf and output filter capacitor Cf；One end of output inductor Lf Simultaneously with the first two-way power switch pipe SAWith the second two-way power switch pipe SBOne end connection, output inductor Lf's is another One end is connected with one end of output filter capacitor Cf, and the other end of output filter capacitor Cf is non-of the same name with the first vice-side winding N3's End, the Same Name of Ends connection of the second vice-side winding N4；
The output AC load includes AC load ZL, AC load ZLOne end simultaneously with output filter capacitor Cf and One end connection of output inductor Lf, AC load ZLThe other end be connected with the other end of output filter capacitor Cf.
The basic functional principle of positive activation type five-electrical level inverter of the present invention is as follows：This inverter can use SPWM controlling parties Formula.Input voltage obtains four kinds of level (+Ui ,+3Ui/4 ,+2Ui/4 ,+Ui/4), partial pressure after the derided capacitors partial pressure of DC side four Input voltage afterwards is modulated into bipolarity, many level (+Ui ,+3Ui/4 ,+2Ui/ by the level translation unit of positive activation type five 4th ,+Ui/4,0,-Ui/4, -2Ui/4, -3Ui/4,-Ui) high-frequency pulse voltage u1 and u2, through high-frequency isolation transformer every From, transmission after, frequency converter be demodulated into unipolarity, many level (+UiN3/N1 ,+3UiN3/4N1 ,+2UiN3/4N1 ,+ UiN3/4N1,0,-UiN3/4N2, -2UiN3/4N2, -3UiN3/4N2,-UiN3/N2) low-frequency pulse voltage again through output filter Ripple device is stablized or adjustable sinusoidal voltage uo after carrying out output filtering, and this inverter has four-quadrant operation ability, Therefore can be entered according to the property of AC load with perception, capacitive, resistive and rectified load, the control circuit of this inverter Row adjustment, so as to be stablized or adjustable voltage in output end.

Claims (10)

1. a kind of positive activation type five-electrical level inverter, it is characterised in that by the input dc power source unit (1), the partial pressure that are sequentially connected Electric capacity (2), the level translation unit (3) of positive activation type five, frequency converter (4), output filter (5) and output AC load (6) Constitute, wherein：
Input dc power source unit (1) is for input DC power；
Derided capacitors (2) for will be input into the average partial pressure of dc source；
The level translation unit (3) of positive activation type five is for the level modulation that produces derided capacitors (2) into bipolarity, the height of many level Frequency pulse voltage；
Frequency converter (4) by bipolarity high-frequency pulse voltage for being demodulated to unipolarity low-frequency pulse voltage；
Output filter (5) to the low-frequency pulse that frequency converter (4) is exported for being filtered treatment.
2. the positive activation type five-electrical level inverter according to claims 1, it is characterised in that the input dc power source unit (1) including input DC power (Ui), input dc power source unit (Ui) is connected with derided capacitors.
3. the positive activation type five-electrical level inverter according to claims 2, it is characterised in that the derided capacitors (2) include First derided capacitors (C1), the second derided capacitors (C2), the 3rd derided capacitors (C3) and the 4th derided capacitors (C4)；First partial pressure The positive pole of electric capacity (C1) is connected with the positive pole of input dc power source unit (Ui), the negative pole of the first derided capacitors (C1) and second point The positive pole connection of voltage capacitance (C2), the negative pole of the second derided capacitors (C2) is connected with the positive pole of the 3rd derided capacitors (C3), and the 3rd The negative pole of derided capacitors (C3) is connected with the positive pole of the 4th derided capacitors (C4), and the negative pole of the 4th derided capacitors (C4) is straight with input The reference negative pole connection of stream power supply (Ui).
4. the positive activation type five-electrical level inverter according to claims 3, it is characterised in that the level translation of the positive activation type five Unit (3) includes the first power switch pipe (S1), the first diode (D1), the second power switch pipe (S2), the second diode (D2), the 3rd power switch pipe (S3), the 3rd diode (D3), the 4th power switch pipe (S4), the 4th diode (D4), the 5th Power switch pipe (S5), the 5th diode (D5), the 6th power switch pipe (S6), the 6th diode (D6), the 7th power switch Pipe (S7), the 7th diode (D7), the 8th power switch pipe (S8), the 8th diode (D8), the 9th power switch pipe (S9), the Nine diodes (D9), the tenth power switch pipe (S10), the tenth diode (D10), the 11st diode (D11), the 12nd pole Pipe (D12), the 13rd diode (D13), the 14th diode (D14), the 15th diode (D15), the 16th diode (D16), the 17th diode (D17), the 18th diode (D18), the primary side winding of high frequency isolation type transformer (T) first (N1), the second primary side winding of high frequency isolation type transformer (T) (N2) and high frequency isolation type transformer (T) vice-side winding.
The drain electrode of first power switch pipe (S1) is connected with the positive pole of the first derided capacitors (C1), the first diode (D1) Inverse parallel is in the first power switch pipe (S1) two ends, the i.e. leakage of the negative electrode and the first power switch pipe (S1) of the first diode (D1) Pole connects, and the anode of the first diode (D1) is connected with the source electrode of the first power switch pipe (S1), the first power switch pipe (S1) Source electrode be connected with the drain electrode of the second power switch pipe (S2), (D2) inverse parallel of the second diode is in the second power switch pipe (S2) Two ends, the i.e. negative electrode of the second diode (D2) is connected with the drain electrode of the second power switch pipe (S2), the sun of the second diode (D2) Pole is connected with the source electrode of the second power switch pipe (S2), the source electrode of the second power switch pipe (S2) and the 3rd power switch pipe (S3) Drain electrode connection, the 3rd diode (D3) inverse parallel is in the 3rd power switch pipe (S3) two ends, i.e. the moon of the 3rd diode (D3) Pole is connected with the drain electrode of the 3rd power switch pipe (S3), the anode of the 3rd diode (D3) and the source of the 3rd power switch pipe (S3) Pole connects, and the source electrode of the 3rd power switch pipe (S3) is connected with the Same Name of Ends of the first primary side winding (N1), the first primary side winding (N1) non-same polarity is connected with the drain electrode of the 4th power switch pipe (S4), and the 4th diode (D4) inverse parallel is opened in the 4th power Pipe (S4) two ends are closed, i.e. the negative electrode of the 4th diode (D4) is connected with the drain electrode of the 4th power switch pipe (S4), the 4th diode (D4) anode is connected with the source electrode of the 4th power switch pipe (S4), and the source electrode of the 4th power switch pipe (S4) and the 4th partial pressure are electric Hold the negative pole connection of (C4), the drain electrode of the 5th power switch pipe (S5) is connected with the positive pole of the first derided capacitors (C1), the five or two Pole pipe (D5) inverse parallel is in the 5th power switch pipe (S5) two ends, the i.e. negative electrode and the 5th power switch pipe of the 5th diode (D5) (S5) drain electrode connection, the anode of the 5th diode (D5) is connected with the source electrode of the 5th power switch pipe (S5), and the 5th power is opened The source electrode for closing pipe (S5) is connected with the non-same polarity of the second primary side winding (N2), the Same Name of Ends and the 6th of the second primary side winding (N2) The drain electrode connection of power switch pipe (S6), the 6th diode (D6) inverse parallel is in the 6th power switch pipe (S6) two ends, i.e., the 6th The negative electrode of diode (D6) is connected with the drain electrode of the 6th power switch pipe (S6), the anode and the 6th power of the 6th diode (D6) The source electrode connection of switching tube (S6), the source electrode of the 6th power switch pipe (S6) is connected with the drain electrode of the 7th power switch pipe (S7), 7th diode (D7) inverse parallel is in the 7th power switch pipe (S7) two ends, the i.e. negative electrode and the 7th power of the 7th diode (D7) The drain electrode connection of switching tube (S7), the anode of the 7th diode (D7) is connected with the source electrode of the 7th power switch pipe (S7), and the 7th The source electrode of power switch pipe (S7) is connected with the drain electrode of the 8th power switch pipe (S8), and the 8th diode (D8) inverse parallel is in the 8th Power switch pipe (S8) two ends, the i.e. negative electrode of the 8th diode (D8) is connected with the drain electrode of the 8th power switch pipe (S8), and the 8th The anode of diode (D8) is connected with the source electrode of the 8th power switch pipe (S8), the source electrode and the 4th of the 8th power switch pipe (S8) The negative pole connection of derided capacitors (C4), the drain electrode of the 9th power switch pipe (S9) connects with the drain electrode of the 4th power switch pipe (S4) Connect, the 9th diode (D9) inverse parallel is in the 9th power switch pipe (S9) two ends, the i.e. negative electrode and the 9th of the 9th diode (D9) The drain electrode connection of power switch pipe (S9), the anode of the 9th diode (D9) is connected with the source electrode of the 9th power switch pipe (S9), The source electrode of the 9th power switch pipe (S9) is connected with the anode of the 11st diode (D11), the negative electrode of the 11st diode (D11) Positive pole with the 4th derided capacitors (C4) is connected, and the drain electrode of the tenth power switch pipe (S10) is with the second derided capacitors (C2) just Pole connects, and the tenth diode (D10) inverse parallel is in the tenth power switch pipe (S10) two ends, the i.e. negative electrode of the tenth diode (D10) Drain electrode with the tenth power switch pipe (S10) is connected, the anode of the tenth diode (D10) and the tenth power switch pipe (S10) Source electrode is connected, and the source electrode of the tenth power switch pipe (S10) is connected with the anode of the 12nd diode (D12), the 12nd diode (D12) negative electrode is connected with the source electrode of the 5th power switch pipe (S5), and the anode of the 13rd diode (D13) and the second partial pressure are electric Hold the positive pole connection of (C2), negative electrode is connected with the source electrode of the first power switch pipe (S1), the anode of the 14th diode (D14) and The positive pole connection of the 3rd derided capacitors (C3), negative electrode is connected with the source electrode of the second power switch pipe (S2), the 15th diode (D15) anode is connected with the positive pole of the 4th derided capacitors (C4), and negative electrode is connected with the source electrode of the 3rd power switch pipe (S3), the The anode of 16 diodes (D16) is connected with the drain electrode of the 6th power switch pipe (S6), negative electrode and the second derided capacitors (C2) Positive pole is connected, and the anode of the 17th diode (D17) is connected with the drain electrode of the 7th power switch pipe (S7), negative electrode and the 3rd partial pressure The positive pole connection of electric capacity (C3), the anode of the 18th diode (D18) is connected with the drain electrode of the 8th power switch pipe (S8), negative electrode Positive pole with the 4th derided capacitors (C4) is connected；The half waves frequency converter (4) includes the first two-way power switch pipe (SA) and the second two-way power switch pipe (SB), the Same Name of Ends of vice-side winding and the first two-way power switch pipe (SA) one end connect Connect, the first two-way power switch pipe (SA) the other end and the second two-way power switch pipe (SB) one end connection, the second two-way work( Rate switching tube (SB) the other end be connected with the non-same polarity of vice-side winding.
5. the positive activation type five-electrical level inverter according to claims 4, it is characterised in that the vice-side winding includes first Vice-side winding (N3), the Same Name of Ends of the first vice-side winding (N3) and the first two-way power switch pipe (SA) one end connection, first Two-way power switch pipe (SA) the other end and the second two-way power switch pipe (SB) one end connection, the second two-way power switch Pipe (SB) the other end be connected with the non-same polarity of the first vice-side winding (N3).
6. the positive activation type five-electrical level inverter according to claims 5, it is characterised in that first two-way power switch Pipe (SA) include the 11st power switch pipe (Sa), the 19th diode (Da), the 12nd power switch pipe (Sb), the 22nd Pole pipe (Db), the second two-way power switch pipe (SD) include the 13rd power switch pipe (Sc), the 21st diode (Dc), 14 power switch pipe (Sd), the 22nd diode (Dd), the 11st power switch pipe (Sa) drain electrode and the 19th diode (Da) negative electrode be connected as the first two-way power switch pipe (SA) one end, the Same Name of Ends with the first vice-side winding (N3) is connected, 12nd power switch pipe (Sb) drain electrode and the 20th diode (Db) negative electrode be connected as the first two-way power switch pipe (SA) the other end, with the second two-way power switch pipe (SB) connection, the 11st power switch pipe (Sa) source electrode, the 12nd work( Rate switching tube (Sb) source electrode, the 19th diode (Da) anode, the 20th diode (Db) anode link together；The 13 power switch pipe (Sc) drain electrode and the 21st diode (Dc) negative electrode simultaneously with the 12nd power switch pipe (Sb) Drain electrode and the 20th diode (Db) negative electrode be connected, the 14th power switch pipe (Sd) drain electrode and the 22nd diode (Dd) negative electrode be connected, while being connected with the non-same polarity of the first vice-side winding (N3), the 13rd power switch pipe (Sc) source Pole, the 14th power switch pipe (Sd) source electrode, the 21st diode (Dc) anode, the 22nd diode (Dd) sun Pole links together.
7. the positive activation type five-electrical level inverter according to claims 6, it is characterised in that output filter (5) bag Include output inductor (Lf) and output filter capacitor (Cf)；One end of output inductor (Lf) simultaneously with the first bidirectional power Switching tube (SA) and the second two-way power switch pipe (SB) one end connection, the other end of output inductor (Lf) filters with output One end connection of ripple electric capacity (Cf), the other end of output filter capacitor (Cf) and the non-same polarity of the first vice-side winding (N3), the Two two-way power switch pipe (SB) the other end connection；
Output AC load (6) includes AC load (ZL), AC load (ZL) one end and output filter capacitor (Cf) One end, the other end connection of output inductor (Lf), AC load (ZL) the other end it is another with output filter capacitor (Cf) One end connects.
8. the positive activation type five-electrical level inverter according to claims 4, it is characterised in that the vice-side winding includes first Vice-side winding (N3) and the second vice-side winding (N4), the Same Name of Ends of the first vice-side winding (N3) and the first two-way power switch pipe (SA) one end connection, the non-same polarity of the first vice-side winding (N3) is connected with the Same Name of Ends of the second vice-side winding (N4), second The non-same polarity of vice-side winding (N4) and the second two-way power switch pipe (SB) one end connection.
9. the positive activation type five-electrical level inverter according to claims 8, it is characterised in that first two-way power switch Pipe (SA) include the 11st power switch pipe (Sa), the 19th diode (Da), the 12nd power switch pipe (Sb), the 22nd Pole pipe (Db), the second two-way power switch pipe (SD) include the 13rd power switch pipe (Sc), the 21st diode (Dc), 14 power switch pipe (Sd), the 22nd diode (Dd), the 11st power switch pipe (Sa) drain electrode and the 19th diode (Da) negative electrode be connected as the first two-way power switch pipe (SA) one end, the Same Name of Ends with the first vice-side winding (N3) is connected, 12nd power switch pipe (Sb) drain electrode and the 20th diode (Db) negative electrode be connected as the first two-way power switch pipe (SA) the other end, with the second two-way power switch pipe (SB) connection, the 11st power switch pipe (Sa) source electrode, the 12nd work( Rate switching tube (Sb) source electrode, the 19th diode (Da) anode, the 20th diode (Db) anode link together；The 13 power switch pipe (Sc) drain electrode and the 21st diode (Dc) negative electrode it is simultaneously non-same with the second vice-side winding (N4) The connection of name end, the 14th power switch pipe (Sd) drain electrode and the 22nd diode (Dd) negative electrode be connected, while with the 12nd Power switch pipe (Sb) drain electrode and the 20th diode (Db) negative electrode be connected, the 13rd power switch pipe (Sc) source electrode, 14 power switch pipe (Sd) source electrode, the 21st diode (Dc) anode, the 22nd diode (Dd) anode connection Together.
10. the positive activation type five-electrical level inverter according to claims 9, it is characterised in that the output filter includes Output inductor (Lf) and output filter capacitor (Cf)；Opened with the first bidirectional power simultaneously one end of output inductor (Lf) Close pipe (SA) and the second two-way power switch pipe (SB) one end connection, the other end of output inductor (Lf) filters with output One end connection of electric capacity (Cf), the other end of output filter capacitor (Cf) and non-same polarity, second of the first vice-side winding (N3) The Same Name of Ends connection of vice-side winding (N4)；
The output AC load includes AC load (ZL), AC load (ZL) one end simultaneously with output filter capacitor (Cf) One end with output inductor (Lf) connects, AC load (ZL) the other end of the other end and output filter capacitor (Cf) connect Connect.
CN201710181634.5A 2017-03-24 2017-03-24 Forward five-level inverter Active CN106899203B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107359803A (en) * 2017-08-31 2017-11-17 南京理工大学 Positive activation type high-frequency isolation three-level inverter
CN107769599A (en) * 2017-11-20 2018-03-06 南京理工大学 Normal shock five-electrical level inverter based on switched capacitor
CN109586551A (en) * 2018-12-17 2019-04-05 郑州云海信息技术有限公司 A kind of reduction regulation output device and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104218815A (en) * 2014-09-18 2014-12-17 南京理工大学 Current source type three-level AC/AC converter
CN105281361A (en) * 2015-09-25 2016-01-27 河海大学 Five-level double-step down grid-connected inverter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104218815A (en) * 2014-09-18 2014-12-17 南京理工大学 Current source type three-level AC/AC converter
CN105281361A (en) * 2015-09-25 2016-01-27 河海大学 Five-level double-step down grid-connected inverter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107359803A (en) * 2017-08-31 2017-11-17 南京理工大学 Positive activation type high-frequency isolation three-level inverter
CN107769599A (en) * 2017-11-20 2018-03-06 南京理工大学 Normal shock five-electrical level inverter based on switched capacitor
CN109586551A (en) * 2018-12-17 2019-04-05 郑州云海信息技术有限公司 A kind of reduction regulation output device and method

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