CN202059344U - Topology of five-level circuit - Google Patents
Topology of five-level circuit Download PDFInfo
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- CN202059344U CN202059344U CN2011200375894U CN201120037589U CN202059344U CN 202059344 U CN202059344 U CN 202059344U CN 2011200375894 U CN2011200375894 U CN 2011200375894U CN 201120037589 U CN201120037589 U CN 201120037589U CN 202059344 U CN202059344 U CN 202059344U
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- power switch
- switch device
- diode
- power switching
- breakback
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Abstract
The utility model relates to a topology of a five-level circuit, a single-bridge arm structure comprises DC inputting capacitors, switch devices and clamping diodes. The four DC inputting capacitors are in series in turn and then are loaded DC input voltage, four clamping diodes are in forward series in turn, the anode is connected with a connecting point between a power switch device V7 and a power switch device V8, and the cathode is connected with a connecting point between a power switch device V2 and a power switch device V3. The power switch devices V1 to V9 are in forward series in turn, and then are connected with the two ends of the DC inputting capacitors separately. The power switch device V5 is connected with the connecting points of the power switch device V1 and the power switch device V2 via the cathode of an anti- breakdown diode, and the other end of the power switch device V5 is connected with the connecting points of the DC inputting capacitor C1 and the DC inputting capacitor C2 via the anode of the anti- breakdown diode. The power switch device V10 is connected with the connecting points of the power switch device V8 and the power switch device V9 via the cathode of the anti- breakdown diode, and the other end of the power switch device V10 is connected with the connecting points of the DC inputting capacitor C2 and the DC inputting capacitor C3 via the anode of the anti- breakdown diode. The topology of the five-level circuit of the utility model is simple in structure, low in cost, and safe and reliable in performance.
Description
Technical field
The utility model relates to a kind of power electronics voltage-type multi-level converter topological structure, particularly a kind of five level circuit topological structures.
Background technology
Along with industry is fast-developing, require more and more higher but high voltage power device is subjected to many-sided restrictions such as technology at present to the electric pressure of power electronic power device, multi-level converter is a developing direction that realizes the high-voltage large-capacity product, and multi-level converter has the following advantages:
1. the busbar voltage of the anti-1/n-1 of being subjected to of each power device (n is a level number) is so realize the output of high-power with low withstand voltage device.
2. the level number increase improves output voltage waveforms, reduces the output voltage waveforms aberration rate.
3. level number increases, and the dv/dt of output voltage reduces, and effectively prevents the infringement to electrical machine insulation.
The general single brachium pontis structure of diode clamp formula five level topology as shown in Figure 1, though it possesses 3 advantages of multi-level converter, but still it is many to exist the clamp diode number, the cost height, the deficiency of structural design relative complex, its DC side has 4 electric capacity, and each brachium pontis power device has 8, and clamp diode has 12.The sort circuit topological structure is unfavorable for the batch process of product.
Summary of the invention
At the deficiencies in the prior art, it is a kind of simple in structure that the utility model provides, and cost is low, the five level circuit topological structures that performance is safe and reliable.
A kind of five level circuit topological structures, single brachium pontis structure comprise 4 direct current input capacitances, 10 device for power switching and 4 clamping diodes; 4 direct current input capacitance C1, C2, C3 and C4 connect successively and connect DC input voitage then; 4 clamping diodes are successively after the forward series connection, and anodal and device for power switching V7 are connected with tie point between the V8, and negative pole and, device for power switching V2 are connected with tie point between the V3; Device for power switching V1, V2, V3, V4, V6, V7, V8, V9 connect the two ends of direct current input capacitance successively after the forward series connection respectively, device for power switching V5 is connected with the tie point of device for power switching V1, V2 by the negative pole of breakback diode, the other end is connected with the tie point of direct current input capacitance C1, C2 by the positive pole of breakback diode, device for power switching V10 is connected with the tie point of device for power switching V8, V9 by the positive pole of breakback diode, and the other end is connected with the tie point of direct current input capacitance C3, C4 by the negative pole of breakback diode.
Described clamping diode is a fast recovery diode.
Forward and connect a breakback diode between the emitter and collector of described switching device constitutes ten switching devices with breakback function, and the model of switching device is IGBT or IGCT, and the breakback diode is that switching device self has.
The method of work of above-mentioned five level circuit topological structures is:
When described switching device requires output
V
0During=2V, open V1, V2, V3, V4, V10, promptly disconnect V5, V6, V7, V8, V9;
V
0During=1V, open V2, V3, V4, V5, V10, promptly disconnect V1, V6, V7, V8, V9;
V
0During=-2V, open V5, V6, V7, V8, V9, promptly disconnect V1, V2, V3, V4, V10;
V
0During=-1V, open V5, V6, V7, V8, V10, promptly disconnect V1, V2, V3, V4, V9;
V
0During=0V, open V3, V4, V6, V7, V5, V10, promptly disconnect V1, V2, V8, V9.
It is as shown in table 1 that five level list bridge arm circuit topology power device is opened off state.
Table 1 five level list bridge arm circuit topology power device is opened the off state table
| ? | V1 | V2 | V3 | V4 | V5 | V6 | V7 | V8 | V9 | V10 |
| 2V | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1V | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 |
| 0V | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 |
| -1V | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 |
| -2V | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 |
When device for power switching V1, V2, V3, V4, V10 open-minded, and device for power switching V5, V6, V7, V8, when V9 turn-offs, V
0=2V;
When the device for power switching V2 of institute, V3, V4, V5, V10 open-minded, and device for power switching V1, V6, V7, V8, when V9 turn-offs, V
0=1V;
When device for power switching V5, V6, V7, V8, V9 open-minded, and device for power switching V1, V2, V3, V4, when V10 turn-offs, V
0=-2V;
When device for power switching V5, V6, V7, V8, V10 open-minded, and device for power switching V1, V2, V3, V4, when V9 turn-offs, V
0=-1V;
When device for power switching V3, V4, V6, V7, V5, V10 open-minded, and device for power switching V1, V2, when V8, V9 turn-off, V
0=0V.
The utility model has following advantage:
1. circuit structure is simplified greatly, has reduced cost.
2. to bear voltage be 1/4. of DC bus-bar voltage to every group of power device
3. middle two groups of power devices move simultaneously, and voltage jump only has 1/4 of DC bus-bar voltage, does not have the series average-voltage problem.The sort circuit structure more helps IGBT (or IGCT) tandem working, and the power switch in the inverter can be composed in series by N IGBT (or IGCT).
Description of drawings
The single brachium pontis structure chart of diode clamp formula five level circuits topology that Fig. 1 is general.
The single brachium pontis structure chart of Fig. 2 the utility model five level circuits topology.
Fig. 3 the utility model five level circuits topology three-phase structure figure.
Embodiment
Embodiment 1:
A kind of five level circuit topological structures, as shown in Figure 2, single brachium pontis structure comprise 4 direct current input capacitance C1, C2, C3 and C4,10 switching device V1 ,-V10 and 4 clamping diode D1, D2, D3 and D4; 4 direct current input capacitance C1, C2, C3 and C4 connect successively and connect DC input voitage then; 4 clamping diode D1, D2, D3 and D4 are successively after the forward series connection, and anodal and device for power switching V7 are connected with tie point between the V8, and negative pole and device for power switching V2 are connected with tie point between the V3; Device for power switching V1, V2, V3, V4, V6, V7, V8, V9 meets direct current input capacitance C1 respectively after the forward series connection successively, C2, the two ends of C3 and C4, device for power switching V5 is by the negative pole and the device for power switching V1 of breakback diode, the tie point of V2 connects, the other end is by the positive pole and the direct current input capacitance C1 of breakback diode, the tie point of C2 connects, device for power switching V10 is by the positive pole and the device for power switching V8 of breakback diode, the tie point of V9 connects, and the other end is by the negative pole and the direct current input capacitance C3 of breakback diode, the tie point of C4 connects.
Described clamping diode D1, D2, D3 and D4 are fast recovery diode.
Forward and connect a breakback diode between the emitter and collector of described switching device D1, D2, D3 and D4 constitutes ten switching devices with breakback function, and the model of switching device is IGBT.
A kind of method of work of five level circuit topological structures is when requiring output
V
0During=2V, open V1, V2, V3, V4, V10, promptly disconnect V5, V6, V7, V8, V9;
V
0During=1V, open V2, V3, V4, V5, V10, promptly disconnect V1, V6, V7, V8, V9;
V
0During=-2V, open V5, V6, V7, V8, V9, promptly disconnect V1, V2, V3, V4, V10;
V
0During=-1V, open V5, V6, V7, V8, V10, promptly disconnect V1, V2, V3, V4, V9;
V
0During=0V, open V3, V4, V6, V7, V5, V10, promptly disconnect V1, V2, V8, V9.
Embodiment 2
A kind of five level circuit topological structures, structure is identical with embodiment 1, and difference is that the model of switching device is IGCT.
Claims (1)
1. a level circuit list bridge arm topological structure is characterized in that, single brachium pontis structure comprises 4 direct current input capacitances, 10 switching devices and 4 clamping diodes; 4 direct current input capacitance C1, C2, C3 and C4 connect successively and connect DC input voitage then; 4 clamping diodes are successively after the forward series connection, and anodal and device for power switching V7 are connected with tie point between the V8, and negative pole and device for power switching V2 are connected with tie point between the V3; Device for power switching V1, V2, V3, V4, V6, V7, V8, V9 connect the two ends of direct current input capacitance successively after the forward series connection respectively, device for power switching V5 is connected with the tie point of device for power switching V1, V2 by the negative pole of breakback diode, the other end is connected with the tie point of direct current input capacitance C1, C2 by the positive pole of breakback diode, device for power switching V10 is connected with the tie point of device for power switching V8, V9 by the positive pole of breakback diode, and the other end is connected with the tie point of direct current input capacitance C3, C4 by the negative pole of breakback diode;
Forward and connect a breakback diode between the emitter and collector of described switching device constitutes ten switching devices with breakback function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200375894U CN202059344U (en) | 2010-10-08 | 2011-01-28 | Topology of five-level circuit |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020551879 | 2010-10-08 | ||
| CN201020551879.6 | 2010-10-08 | ||
| CN2011200375894U CN202059344U (en) | 2010-10-08 | 2011-01-28 | Topology of five-level circuit |
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| Publication Number | Publication Date |
|---|---|
| CN202059344U true CN202059344U (en) | 2011-11-30 |
Family
ID=45019307
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200375894U Expired - Lifetime CN202059344U (en) | 2010-10-08 | 2011-01-28 | Topology of five-level circuit |
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| Country | Link |
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| CN (1) | CN202059344U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624270A (en) * | 2012-04-01 | 2012-08-01 | 阳光电源股份有限公司 | Topology unit for five-level inverter and five-level inverter |
| CN102710161A (en) * | 2012-04-13 | 2012-10-03 | 阳光电源股份有限公司 | Switching tube unit, inverter and generating system with inverter |
-
2011
- 2011-01-28 CN CN2011200375894U patent/CN202059344U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624270A (en) * | 2012-04-01 | 2012-08-01 | 阳光电源股份有限公司 | Topology unit for five-level inverter and five-level inverter |
| CN102624270B (en) * | 2012-04-01 | 2014-08-06 | 阳光电源股份有限公司 | Topology unit for five-level inverter and five-level inverter |
| CN102710161A (en) * | 2012-04-13 | 2012-10-03 | 阳光电源股份有限公司 | Switching tube unit, inverter and generating system with inverter |
| CN102710161B (en) * | 2012-04-13 | 2014-06-11 | 阳光电源股份有限公司 | Switching tube unit, inverter and generating system with inverter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: XINFENGGUANG ELECTRONICS TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANDONG XINFENG PHOTOELECTRIC SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 272500 Shandong Province Economic Development Zone Jining City Wenshang County Patentee after: Shandong Xinfengguang Electronic Technology Development Co., Ltd. Address before: 272500 Shandong Province Economic Development Zone Jining City Wenshang County Patentee before: Shandong Xinfeng Photoelectric Science & Technology Development Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111130 |