CN201937493U - Four-level inverter - Google Patents
Four-level inverter Download PDFInfo
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- CN201937493U CN201937493U CN2011200105838U CN201120010583U CN201937493U CN 201937493 U CN201937493 U CN 201937493U CN 2011200105838 U CN2011200105838 U CN 2011200105838U CN 201120010583 U CN201120010583 U CN 201120010583U CN 201937493 U CN201937493 U CN 201937493U
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Abstract
The utility model discloses a four-level inverter which belongs to the technical field of industrial electrical transmission control and alternating current flexible power transmission technology and comprises a direct current power supply, three energy storage capacitors, six IGBTs (insulated gate bipolar transistors) with built-in backward diodes, and two clamping diodes; the four-level inverter can obtain four levels of 0, E/3, 2E/3 and E at the output end by controlling the on-off state of different IGBTs, in addition, the inverter can be further expanded to be a three-phase structure. The four-level inverter can be applied to such occasions as alternating current frequency control and power reactive compensation, can significantly reduce the quantity of the clamping diodes and can effectively reduce the cost and the packaging difficulty compared with the traditional diode clamping four-level inverter.
Description
Technical field
The utility model relates to a kind of power inverter that is applied to occasions such as ac variable frequency speed regulation, electric reactive compensating, belongs to industrial electric transmission control and the technical field that exchanges the flexible transmission technology.
Background technology
Multi-level converter is realized having obtained the significant advantage of the Power Conversion ability of voltage levels paying close attention to widely, study and used in mesohigh Power Conversion occasion with its power device with the low voltage capacity.Need control flowing of reactive power in occasions such as active power filtering and reactive power compensations,, need the two-way flow of power controlling in industrial motor speed governing field.The diode clamp multi-level converter is having superiority aspect the control bidirectional power flow, thereby its application is very extensive, has been subjected to more concern and research.
Figure 1 shows that the topological structure of classical diode clamp four level converters, the withstand voltage of the voltage of the withstand voltage and capacitor C 1-C3 of clamping diode D1-D6 or power switch T1-T6 equates among the figure.T1-T6 is the IGBT with built-in backward diode, because the non-individual devices of backward diode, so, do not mark separately.For diode clamp multi-level converter, whenever need 6 clamping diodes mutually, and clamping diode can cause the increase of volume, weight, cost and the encapsulation difficulty of whole power inverter with 4 output levels.
Summary of the invention
The purpose of this utility model is to overcome the defective that prior art exists, and a kind of modified model four electrical level inverters are provided, and can reduce the clamping diode number, thereby reduce the cost and the encapsulation difficulty of whole inverter.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of four electrical level inverters comprise DC power supply, three energy storage capacitors, six IGBT and two clamping diodes with built-in backward diode, and the drain electrode of positive source, the first energy storage capacitor positive pole, an IGBT pipe is connected together; The negative electrode of the drain electrode of the source electrode of the one IGBT pipe, the 2nd IGBT pipe and first diode is connected together, and the source electrode of described power cathode, the 3rd energy storage capacitor negative pole, the 4th IGBT pipe is connected together; The drain electrode of the source electrode of described the 2nd IGBT pipe, the 3rd IGBT pipe is connected together, and is output; The anode of the drain electrode of the source electrode of described the 3rd IGBT pipe, the 4th IGBT pipe and second diode is connected together; The drain electrode anodal and the 5th IGBT pipe of the negative pole of described first energy storage capacitor, second energy storage capacitor is connected together; The source electrode anodal and the 6th IGBT pipe of the negative pole of described second energy storage capacitor, the 3rd energy storage capacitor is connected together; The negative electrode of the anode of the drain electrode of the source electrode of described the 5th IGBT pipe, the 6th IGBT pipe, first diode, second diode is connected together.
Four electrical level inverters of the present utility model can be applied to occasions such as ac variable frequency speed regulation, electric reactive compensating, compare with conventional diode clamp four electrical level inverters, can significantly reduce the clamping diode number, and effectively reduce cost and encapsulation difficulty.
Description of drawings
Fig. 1 is the topological structure of a kind of diode clamp four level converters in the prior art.
Fig. 2 is the circuit diagram of the utility model four electrical level inverters.
Fig. 3 is the four electrical level inverter circuit diagrams that the utility model is used for three-phase structure.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further details.
As shown in Figure 2, inverter of the present utility model is made up of DC power supply E, energy storage capacitor C1-C3, the IGBT T1-T6 with built-in backward diode, clamping diode D1-D2.When the T1-T2 conducting of IGBT pipe and IGBT pipe T3-T6 when turn-offing, single-phase inverter output A point current potential is supply voltage E; When IGBT pipe T3-T4 conducting, IGBT pipe T1-T2 and T5-T6 turn-offed, single-phase inverter output A point current potential was 0; When IGBT pipe T2, T3 and T5 conducting, and IGBT pipe T1, T4, when T6 turn-offs, single-phase inverter output A point current potential is 2/3 of a supply voltage; When IGBT pipe T2, T3 and T6 conducting, and IGBT pipe T1, T4, when T5 turn-offs, single-phase inverter output A point current potential is 1/3 of a supply voltage.Promptly can obtain 0 at the output A of single-phase inverter point, four level such as E/3,2E/3, E.
Share DC power supply and three storage capacitors, be provided with three respectively by 6 IGBT pipes and 2 outputs that clamping diode is formed, three outputs all connect according to the method for phase structure shown in Figure 2, can obtain the three-phase structure of four electrical level inverters of the present utility model, as shown in Figure 3.
Claims (2)
1. electrical level inverter, comprise DC power supply, three energy storage capacitors, six IGBT and two clamping diodes with built-in backward diode, it is characterized in that described positive source, first energy storage capacitor (C1) drain electrode anodal, IGBT pipe (T1) are connected together; The drain electrode of the source electrode of the one IGBT pipe (T1), the 2nd IGBT pipe (T2) and the negative electrode of first diode (D1) are connected together; The source electrode of power cathode, the 3rd energy storage capacitor (C3) negative pole, the 4th IGBT pipe (T4) is connected together; The drain electrode of the source electrode of the 2nd IGBT pipe (T2), the 3rd IGBT pipe (T3) is connected together, and is output; The drain electrode of the source electrode of the 3rd IGBT pipe (T3), the 4th IGBT pipe (T4) and the anode of second diode (D2) are connected together; The drain electrode of the positive pole of the negative pole of first energy storage capacitor (C1), second energy storage capacitor (C2) and the 5th IGBT pipe (T5) is connected together; The source electrode of the positive pole of the negative pole of described second energy storage capacitor (C2), the 3rd energy storage capacitor (C3) and the 6th IGBT pipe (T6) is connected together; The drain electrode of the source electrode of described the 5th IGBT pipe (T5), the 6th IGBT pipe (T6), the anode of first diode (D1), the negative electrode of second diode (D2) are connected together.
2. a kind of four electrical level inverters according to claim 1, it is characterized in that: described output is set to three-phase structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200105838U CN201937493U (en) | 2011-01-14 | 2011-01-14 | Four-level inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200105838U CN201937493U (en) | 2011-01-14 | 2011-01-14 | Four-level inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937493U true CN201937493U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200105838U Expired - Fee Related CN201937493U (en) | 2011-01-14 | 2011-01-14 | Four-level inverter |
Country Status (1)
| Country | Link |
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| CN (1) | CN201937493U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427308A (en) * | 2011-10-27 | 2012-04-25 | 阳光电源股份有限公司 | Single-phase half-bridge five-level inverter and application circuit thereof |
| CN102570881A (en) * | 2012-02-20 | 2012-07-11 | 阳光电源股份有限公司 | Four-level topology unit and application circuit thereof |
| CN103441695A (en) * | 2013-08-30 | 2013-12-11 | 阳光电源股份有限公司 | Method and system for balance control over capacitance electric potential of three-phase four-level converter |
| CN105048842A (en) * | 2015-09-07 | 2015-11-11 | 阳光电源股份有限公司 | Single-phase four-level inverter and application circuit thereof |
| CN105162345A (en) * | 2015-09-16 | 2015-12-16 | 上海交通大学 | Four-level DC-AC converter for DC microgrid |
| WO2016107123A1 (en) * | 2015-01-04 | 2016-07-07 | 华为技术有限公司 | Multi-level-topology circuit and power converter |
| WO2017076367A1 (en) * | 2015-11-06 | 2017-05-11 | 汪洪亮 | Single-phase four-level inverter circuit topology and three-phase four-level inverter circuit topology |
| CN107994794A (en) * | 2017-12-29 | 2018-05-04 | 重庆大学 | A kind of double-T shaped four level inverse conversions unit and its application circuit and modulator approach |
| CN108476001A (en) * | 2015-11-24 | 2018-08-31 | Abb瑞士股份有限公司 | Four level power converters |
| CN108667321A (en) * | 2018-04-27 | 2018-10-16 | 重庆大学 | Mix four level rectifiers |
| CN109004848A (en) * | 2018-07-20 | 2018-12-14 | 重庆大学 | Tetra- level rectifier of Vienna |
| CN113726208A (en) * | 2020-11-30 | 2021-11-30 | 樊蓉 | Hybrid four-level converter and low-frequency fluctuation suppression method thereof |
-
2011
- 2011-01-14 CN CN2011200105838U patent/CN201937493U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427308B (en) * | 2011-10-27 | 2013-12-25 | 阳光电源股份有限公司 | Single-phase half-bridge five-level inverter and application circuit thereof |
| CN102427308A (en) * | 2011-10-27 | 2012-04-25 | 阳光电源股份有限公司 | Single-phase half-bridge five-level inverter and application circuit thereof |
| CN102570881A (en) * | 2012-02-20 | 2012-07-11 | 阳光电源股份有限公司 | Four-level topology unit and application circuit thereof |
| CN102570881B (en) * | 2012-02-20 | 2014-06-25 | 阳光电源股份有限公司 | Four-level topology unit and application circuit thereof |
| CN103441695A (en) * | 2013-08-30 | 2013-12-11 | 阳光电源股份有限公司 | Method and system for balance control over capacitance electric potential of three-phase four-level converter |
| WO2016107123A1 (en) * | 2015-01-04 | 2016-07-07 | 华为技术有限公司 | Multi-level-topology circuit and power converter |
| CN105048842A (en) * | 2015-09-07 | 2015-11-11 | 阳光电源股份有限公司 | Single-phase four-level inverter and application circuit thereof |
| CN105162345B (en) * | 2015-09-16 | 2019-01-25 | 上海交通大学 | A kind of four electrical level DC-AC converters of direct-current micro-grid |
| CN105162345A (en) * | 2015-09-16 | 2015-12-16 | 上海交通大学 | Four-level DC-AC converter for DC microgrid |
| WO2017076367A1 (en) * | 2015-11-06 | 2017-05-11 | 汪洪亮 | Single-phase four-level inverter circuit topology and three-phase four-level inverter circuit topology |
| CN108476001A (en) * | 2015-11-24 | 2018-08-31 | Abb瑞士股份有限公司 | Four level power converters |
| CN108476001B (en) * | 2015-11-24 | 2021-04-02 | Abb瑞士股份有限公司 | Four-level power converter and three-phase power converter |
| CN107994794A (en) * | 2017-12-29 | 2018-05-04 | 重庆大学 | A kind of double-T shaped four level inverse conversions unit and its application circuit and modulator approach |
| CN107994794B (en) * | 2017-12-29 | 2019-11-08 | 重庆大学 | The double-T shaped four level inverse conversions unit of one kind and its application circuit and modulator approach |
| CN108667321A (en) * | 2018-04-27 | 2018-10-16 | 重庆大学 | Mix four level rectifiers |
| CN108667321B (en) * | 2018-04-27 | 2020-07-07 | 重庆大学 | Hybrid four-level rectifier |
| CN109004848A (en) * | 2018-07-20 | 2018-12-14 | 重庆大学 | Tetra- level rectifier of Vienna |
| CN113726208A (en) * | 2020-11-30 | 2021-11-30 | 樊蓉 | Hybrid four-level converter and low-frequency fluctuation suppression method thereof |
| CN113726208B (en) * | 2020-11-30 | 2023-11-14 | 樊蓉 | Hybrid four-level converter and low-frequency fluctuation suppression method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20140114 |