CN202261072U - Three-level inverter - Google Patents
Three-level inverter Download PDFInfo
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- CN202261072U CN202261072U CN2011204085091U CN201120408509U CN202261072U CN 202261072 U CN202261072 U CN 202261072U CN 2011204085091 U CN2011204085091 U CN 2011204085091U CN 201120408509 U CN201120408509 U CN 201120408509U CN 202261072 U CN202261072 U CN 202261072U
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- igbt
- insulated gate
- gate bipolar
- bipolar transistor
- electrochemical capacitor
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- 239000003990 capacitor Substances 0.000 claims abstract description 25
- 230000000694 effects Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
The utility model relates to a three-level voltage source inverter structure device and belongs to the technical field of power electric inverters. The three-level voltage source inverter adopts the connection structure that the anode terminal of a direct current supply (E) and the anode terminal of an electrolytic capacitor (C1) are connected with the collecting electrode of an insulated gate bipolar transistor (Sa1); the cathode terminal of the direct current supply (E) and the cathode terminal of an electrolytic capacitor (C2) are connected with the emitting electrode of an insulated gate bipolar transistor (Sa4); the cathode terminal of the electrolytic capacitor (C1) is connected with the emitting electrode of an insulated gate bipolar transistor (Sa2); the emitting electrode of the insulated gate bipolar transistor (Sa1) and the collecting electrode of the insulated gate bipolar transistor (Sa2) are connected with the collecting electrode of an insulated gate bipolar transistor (Sa5); the emitting electrodes of insulated gate bipolar transistors (Sa3 and Sa6) are connected with the collecting electrode of an insulated gate bipolar transistor (Sa4); and the emitting electrode of the insulated gate bipolar transistor (Sa5) and the emitting electrode of insulated gate bipolar transistor (Sa6) are connected with the output end of an A phase. Therefore, the three-level voltage source inverter has the advantages of simple structure and flexibility in control, is suitable for more-level voltages and has a big practical value.
Description
Affiliated technical field
The utility model relates to a kind of three-level voltage source inverter structure device, belongs to the technical field of electronic power inverter.
Background technology
In recent years, along with the development in an all-round way of power electronic technology and control technology, power electronic equipment is widely used, and people are more and more stronger to the requirement of high-power, high pressure resistant, the low harmonic disturbance of power electronic equipment.Advantage such as the multi-level inverse conversion device has that power is big, switching frequency is low, output harmonic wave is little, rapid dynamic response speed, Electro Magnetic Compatibility are good; And can make the low power electronic device of withstand voltage reliably be applied to the high-power field, and reduce the high order harmonic component that pulse-width modulation (being called for short PWM) control produces effectively.But; Because the number of diodes of known diode clamp type three level inverter is many, electric capacity flies to stride that the control of type three level inverter is complicated, H bridge cascade connection type three level inverter needs independently DC source all have inherent defect, suppressed popularization and the use of three level inverter in reality.
Summary of the invention
In order to overcome the deficiency of known three level inverter on topological structure, the utility model provides a kind of simple in structurely, control flexibly and is easy to expand to and exports the more novel three level inverter of voltage with multiple levels.
The utility model solves the technical scheme that its technical problem adopted: three level inverter of the present invention comprises DC power supply (E); Electrochemical capacitor (C1); Electrochemical capacitor (C2), six igbts (Sa1, Sa2, Sa3, Sa4, Sa5, Sa6).The positive terminal of the positive terminal of DC power supply (E), electrochemical capacitor (C1) connects the collector electrode of igbt (Sa1); The negative pole end of the negative pole end of DC power supply (E), electrochemical capacitor (C2) connects the emitter of igbt (Sa4); The negative pole end of electrochemical capacitor (C1) links to each other with the emitter of igbt (Sa2); The collector electrode of the emitter of igbt (Sa1), igbt (Sa2) connects the collector electrode of igbt (Sa5); The emitter of the emitter of igbt (Sa3), igbt (Sa6) connects the collector electrode of igbt (Sa4), and the collector electrode of the emitter of igbt (Sa5), igbt (Sa6) connects the output of A phase.
Conducting through controlling six different igbts (Sa1, Sa2, Sa3, Sa4, Sa5, Sa6) or turn-off the output that can be easy to realize three level voltages.
The beneficial effect of the utility model is, realizes the output of three level voltages easily, topological structure is simple, control flexibly, be easy to simultaneously be expanded into and export the more inverter of voltage with multiple levels, in practical application, have very big value.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the A phase topology diagram of the utility model.
Fig. 2 is the three-phase topology diagram of the utility model.
Among the figure: E is a DC power supply, and C1, C2 are electrochemical capacitor, and Sa1, Sa2, Sa3, Sa4, Sa5, Sa6 are igbt, and A is a voltage output end.
Embodiment
Do bright specifically below in conjunction with accompanying drawing and embodiment to the present invention.
In conjunction with Fig. 1, the utility model circuit structure comprises DC power supply (E), electrochemical capacitor (C1), electrochemical capacitor (C2), six igbts (Sa1, Sa2, Sa3, Sa4, Sa5, Sa6).The positive terminal of the positive terminal of DC power supply (E), electrochemical capacitor (C1) connects the collector electrode of igbt (Sa1); The negative pole end of the negative pole end of DC power supply (E), electrochemical capacitor (C2) connects the emitter of igbt (Sa4); The negative pole end of electrochemical capacitor (C1) links to each other with the emitter of igbt (Sa2); The collector electrode of the emitter of igbt (Sa1), igbt (Sa2) connects the collector electrode of igbt (Sa5); The emitter of the emitter of igbt (Sa3), igbt (Sa6) connects the collector electrode of igbt (Sa4), and the collector electrode of the emitter of igbt (Sa5), igbt (Sa6) connects the output of A phase.
Conducting through control different insulative grid bipolar transistors (Sa1, Sa2, Sa3, Sa4, Sa5, Sa6) with turn-off the output can be easy to realize three level voltages.
During practical implementation, each igbt also can be realized by two or more igbt series connection among Fig. 1.Each electrochemical capacitor also can realize that perhaps series and parallel mixes realization again by a plurality of electrochemical capacitor series connection realizations or parallel connection.Each igbt also can be used by other full-control type device replacements, and other full-control type devices comprise integrated gate commutated thyristor, gate level turn-off thyristor, power transistor, field of electric force effect transistor.
The inverter three-phase topological structure that Fig. 2 forms for the utility model.
The utility model, used electrochemical capacitor quantity is few, need not to control the balance of midpoint potential, and each mutually only has two electrochemical capacitors, and circuit structure is simple, and control is flexibly.Compare with known many level topological structure, the utility model is convenient to be expanded into the more inverter of voltage with multiple levels.
Claims (4)
1. three level inverter, it is characterized in that: it comprises DC power supply (E), electrochemical capacitor (C1), electrochemical capacitor (C2), igbt (Sa1, Sa2, Sa3, Sa4, Sa5, Sa6); The positive terminal of the positive terminal of DC power supply (E), electrochemical capacitor (C1) connects the collector electrode of igbt (Sa1); The negative pole end of the negative pole end of DC power supply (E), electrochemical capacitor (C2) connects the emitter of igbt (Sa4); The negative pole end of electrochemical capacitor (C1) links to each other with the emitter of igbt (Sa2); The collector electrode of the emitter of igbt (Sa1), igbt (Sa2) connects the collector electrode of igbt (Sa5); The emitter of the emitter of igbt (Sa3), igbt (Sa6) connects the collector electrode of igbt (Sa4), and the collector electrode of the emitter of igbt (Sa5), igbt (Sa6) connects the output of A phase.
2. according to right 1 described three level inverter, it is characterized in that: each igbt also can be realized by two or more igbt series connection.
3. according to right 1 described three level inverter, it is characterized in that: each electrochemical capacitor also can realize that perhaps series and parallel mixes realization again by a plurality of electrochemical capacitor series connection realizations or parallel connection.
4. according to right 1 described three level inverter; It is characterized in that: each igbt also can be used by other full-control type device replacements, and other full-control type devices comprise integrated gate commutated thyristor, gate level turn-off thyristor, power transistor, field of electric force effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204085091U CN202261072U (en) | 2011-10-18 | 2011-10-18 | Three-level inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204085091U CN202261072U (en) | 2011-10-18 | 2011-10-18 | Three-level inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261072U true CN202261072U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204085091U Expired - Fee Related CN202261072U (en) | 2011-10-18 | 2011-10-18 | Three-level inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594181A (en) * | 2012-02-20 | 2012-07-18 | 阳光电源股份有限公司 | Multilevel inversion topological unit and multilevel inverter |
-
2011
- 2011-10-18 CN CN2011204085091U patent/CN202261072U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594181A (en) * | 2012-02-20 | 2012-07-18 | 阳光电源股份有限公司 | Multilevel inversion topological unit and multilevel inverter |
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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: 20120530 Termination date: 20121018 |