CN1625032A - Five-level high-frequency DC. converter - Google Patents
Five-level high-frequency DC. converter Download PDFInfo
- Publication number
- CN1625032A CN1625032A CNA2004100734124A CN200410073412A CN1625032A CN 1625032 A CN1625032 A CN 1625032A CN A2004100734124 A CNA2004100734124 A CN A2004100734124A CN 200410073412 A CN200410073412 A CN 200410073412A CN 1625032 A CN1625032 A CN 1625032A
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- CN
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- Prior art keywords
- brachium pontis
- node
- arm
- switch
- level
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/4837—Flying capacitor converters
-
- 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
- H02M1/0095—Hybrid converter topologies, e.g. NPC mixed with flying capacitor, thyristor converter mixed with MMC or charge pump mixed with buck
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
This invention penta-level high frequency DC changer, including input voltage resource and the serial electrolytic condenser paralleled on the input voltage resource, and the arm A and B are paralleled at the two ends of the condenser, the arm A is made up of two serial switches, and the arm B is composed of four serial switches, and the transformer is connected between the d point of the arm A and the c point of the arm B, bidirectional switches that are backing serial connected are serial at jointed between the node a of the electrolytic condenser and node c of the arm B, and two floating capacitances are paralleled between node b of the two bidirectional switches and nodes e and f of the arm B.
Description
Technical field
The present invention relates to a kind of high frequency direct-current switch power supply, particularly a kind of five-level high-frequency dc converter.
Background technology
Miniaturization, lightweight are the developing direction of power electronic equipment.As everyone knows, the volume and weight maximum is passive device in the middle of power electronic equipment, and the volume and weight that how to reduce passive device is one of problem of generally being concerned about of industrial quarters.Along with the development of power electronic technology, the performance of high speed gate-controlled switch device such as IGBT, MOSFET improves constantly, and it is found that by improving the volume and weight that switching frequency can effectively reduce passive device.The mid-80 is higher than the appearance of the high frequency switch power of 20kHz, the volume that has reduced passive device of success.But along with the raising of switching frequency, the switching loss of power electronic device sharply increases, and electromagnetic interference problem is on the rise, and these all problems are all restricting the impossible unconfined growth of switching frequency of power supply.How overcoming this bottleneck problem, is the difficult problem of pendulum in face of the power electronic equipment engineer.In the middle of all existing technology, multilevel converter is one of solution wherein.Multi-level circuit is conceived to solve the unbalanced problem of dynamic electric voltage that is run into when using low-voltage device to realize high pressure conversion, adopts a plurality of level splicing output levels simultaneously.But in the middle of traditional multi-level circuit, structure is too complicated, has limited to the application of multi-level circuit to a great extent.
Summary of the invention
The objective of the invention is to overcome the baroque shortcoming of multi-level circuit, proposed a kind of simple in structure, the output waveform quality good and the switching frequency that does not improve power electronic device, do not increase extra switching loss and the aggravation electromagnetic interference problem condition under, reduce the output filter circuit volume, improve the five-level high-frequency dc converter of the dynamic characteristic of system.
For achieving the above object, the technical solution used in the present invention is: comprise input voltage source U
InAnd be connected in parallel on input voltage source U
InOn the electrochemical capacitor C of mutual series connection
In1And C
In2, it is characterized in that: at electrochemical capacitor C
In1And C
In2Two ends also be parallel with brachium pontis A and brachium pontis B, brachium pontis A is by the switch S of two series connection
5And S
6Form, brachium pontis B is by the switch S of four series connection
1, S
2, S
3And S
4Form, between the c of the d of brachium pontis A point and brachium pontis B point, also be connected with transformer E, by switch S
7And S
8, S
9And S
10Two bidirectional switchs of differential concatenation formation are connected on electrochemical capacitor C separately
In1And C
In2Between node a and the node c of brachium pontis B between, and between node e, the node f of the node b of two bidirectional switchs and brachium pontis B, also be parallel with two floating capacitance C
Fly1And C
Fly2
Because the present invention adopts multi-level circuit, multi-level circuit reduces harmonic component in output voltage by increasing the output level number, this device has been simplified the complex structure degree of original multi-level circuit greatly, makes multi-level circuit might be used for mesolow Power Conversion occasion.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the former edge work ideograph of transformer of the present invention;
Fig. 3 is two of the former edge work ideograph of transformer of the present invention.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are described in further detail.
Referring to Fig. 1, the present invention includes input voltage source U
InAnd be connected in parallel on input voltage source U
InOn the electrochemical capacitor C of mutual series connection
In1And C
In2, it is characterized in that: at electrochemical capacitor C
In1And C
In2Two ends also be parallel with brachium pontis A and brachium pontis B, brachium pontis A is by the switch S of two series connection
5And S
6Form, brachium pontis B is by the switch S of four series connection
1, S
2, S
3And S
4Form, between the c of the d of brachium pontis A point and brachium pontis B point, also be connected with transformer E, by switch S
7And S
8, S
9And S
10Two bidirectional switchs of differential concatenation formation are connected on electrochemical capacitor C separately
In1And C
In2Between node a and the node c of brachium pontis B between, and between node e, the node f of the node b of two bidirectional switchs and brachium pontis B, also be parallel with two floating capacitance C
Fly1And C
Fly2
Traditional multi-level circuit is conceived to solve the unbalanced problem of dynamic electric voltage that is run into when using low-voltage device to realize high pressure conversion.And in mesolow Power Conversion field, no matter existing device still is that performance is said and can be satisfied the demand from electric pressure.The present invention at first simplifies original circuit, four switches about the brachium pontis of original five level full-bridge circuits are simplified to each switch up and down, such circuit has many level outputs, reduced by 6 main switching devices simultaneously, simplified the scale of control, driving and protective circuit accordingly greatly; In the middle of traditional multi-level circuit, numerous clamp diodes or clamper floating capacitance circuit also are to cause the multi-level circuit huge too fat to move main cause that seems.Second of the present invention what will solve is exactly to simplify clamp circuit.Because the starting point of the present invention is to provide many level outputs, and does not require that each switch bears identical voltage stress, make that reaching same output effect by the change circuit structure becomes possibility.
The difference of the present invention and other five level circuits is: 1) brachium pontis A is kept to 2 switches from 8 switching devices, has avoided corresponding clamp circuit simultaneously.2) brachium pontis B is carried out structural adjustment, or else increase under the situation of switch, only increase by two floating capacitances and realized five level output effects, its structure is all simpler than existing multi-level circuit.
Device has five output levels, 12 switching modes.According to the difference of output voltage, 4 kinds of mode of operation combinations can be arranged.Be respectively and work as 3U
In/ (4k)＜U
o＜U
In/ k contains U before the output filter
In/ k and 3U
In/ (4k) two kinds of level; U
In/ (2k)＜U
o＜3U
In/ (4k), contain U before the output filter
In/ (2k) and 3U
In/ (4k) two kinds of level; U
In/ (4k)＜U
o＜U
In/ (2k), contain U before the output filter
In/ (2k) and U
In/ (4k) two kinds of level; 0＜U
o＜U
In/ (4k), contain 0 and U before the output filter
In/ (4k) two kinds of level, k is a transformer voltage ratio therein.Requirement difference according to output voltage can be selected different mode combinations.In the course of work of five level DC/DC translation circuits, stable capacitance voltage is the basis of converter work, makes up effectively control capacittance voltage by the different switching modes of regulating each intermediate level correspondence in circuit.Here with output voltage at 3U
In/ (4k)＜U
o＜U
InIn/k the scope is example, analyzes:
Fig. 2 and Fig. 3 are all working pattern diagram, and thick dashed line is a current flow path among the figure.
Mode of operation 1, figure (2-a): t
0Constantly, switch S
1, S
2And S
6Conducting, ν
AB=U
In, the former limit of transformer is to transformer secondary output energy.The transformer primary current is linear to rise.
Mode of operation 2, figure (2-a): t
1Constantly, open S
7, this moment is because S
8Inverse parallel diode D
8Bear back-pressure, S
7Be zero current turning-on.
Mode of operation 3, figure (2-c): t
2Constantly, turn-off S
1, S
7, D
8, S
2And S
6Conducting, ν
AB=3U
In/ 4, former limit of transformer and output inductor provide energy to output together.
Mode of operation 4, figure (2-a): t
3Constantly, open S
1, D
8Turn-off, after this turn-off S
7, S
7Be zero-current switching.
Mode of operation 5, figure (2-a): t
4Constantly, open S
9, this moment is because S
10Inverse parallel diode D
10Bear back-pressure and turn-off S
9Be zero current turning-on.
Mode of operation 6, figure (2-d): t
5Constantly, turn-off S
2, S
9, D
10, S
1And S
6Conducting, ν
AB=3U
In/ 4, former limit of transformer and output inductor provide energy to output together.
Mode of operation 7 t
6Constantly, turn-off S
1, transformer former limit afterflow, S
3And S
4The inverse parallel diode current flow, ν
AB=0, transformer former limit afterflow.Give S
3And S
4Create the condition that no-voltage is opened, give S this moment
3And S
4Drive signal, S
3And S
4Can realize that no-voltage is open-minded.
Mode of operation 8 t
7Constantly, turn-off S
6, diode D
3, D
4And D
5According to the situation afterflow of load, when heavy duty or seal under the situation of resonant inductance switch S
5Possible no-voltage is open-minded.
Mode of operation 9, figure (2-b): t
8Constantly, driving switch S
5, switch S
3, S
4And S
5Conducting, ν
AB=-U
In, the former limit of transformer is to transformer secondary output energy.Converter enters into the negative half period operating state.The operating state of negative half period is similar with positive half cycle, is not described in detail in this.
In this mode of operation, C
Fly1The ON time of capacitance voltage by the switching mode shown in the switching mode shown in Fig. 2-c) and Fig. 2-d) is than regulating;
In this mode of operation, C
Fly2The ON time of capacitance voltage by the switching mode shown in the switching mode shown in Fig. 2-e) and Fig. 2-f) is than regulating.
Each figure is the mode of operation of device when being operated in other operating state among Fig. 3:
Fig. 3-a) is ν
AB=U
In/ 2 o'clock working mode figure;
Fig. 3-b) is ν
AB=-U
In/ 2 o'clock working mode figure;
Fig. 3-c) is ν
AB=U
InOne of working mode figure of/4 o'clock;
Fig. 3-d) is ν
AB=U
InTwo of/4 o'clock working mode figure;
Fig. 3-e) is ν
AB=-U
InOne of working mode figure of/4 o'clock;
Fig. 3-f) is ν
AB=-U
InTwo of/4 o'clock working mode figure;
Claims (1)
1, a kind of five-level high-frequency dc converter comprises input voltage source U
InAnd be connected in parallel on input voltage source U
InOn the electrochemical capacitor C of mutual series connection
In1And C
In2, it is characterized in that: at electrochemical capacitor C
In1And C
In2Two ends also be parallel with brachium pontis A and brachium pontis B, brachium pontis A is by the switch S of two series connection
5And S
6Form, brachium pontis B is by the switch S of four series connection
1, S
2, S
3And S
4Form, between the c of the d of brachium pontis A point and brachium pontis B point, also be connected with transformer E, by switch S
7And S
8, S
9And S
10Two bidirectional switchs of differential concatenation formation are connected on electrochemical capacitor C separately
In1And C
In2Between node a and the node c of brachium pontis B between, and between node e, the node f of the node b of two bidirectional switchs and brachium pontis B, also be parallel with two floating capacitance C
Fly1And C
Fly2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100734124A CN100386959C (en) | 2004-12-16 | 2004-12-16 | Five-level high-frequency DC. converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100734124A CN100386959C (en) | 2004-12-16 | 2004-12-16 | Five-level high-frequency DC. converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1625032A true CN1625032A (en) | 2005-06-08 |
| CN100386959C CN100386959C (en) | 2008-05-07 |
Family
ID=34765318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100734124A Expired - Fee Related CN100386959C (en) | 2004-12-16 | 2004-12-16 | Five-level high-frequency DC. converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100386959C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466448C (en) * | 2006-04-17 | 2009-03-04 | 山东新风光电子科技发展有限公司 | Five-level converter structure device |
| CN101917133A (en) * | 2010-08-30 | 2010-12-15 | 南京航空航天大学 | Five-electrical level inverter |
| CN102035420A (en) * | 2009-09-25 | 2011-04-27 | 富士电机控股株式会社 | Five-level converter |
| CN102437764A (en) * | 2011-10-09 | 2012-05-02 | 西安爱科电子有限责任公司 | Seven-electrical level DC-AC converter |
| CN102763316A (en) * | 2010-02-15 | 2012-10-31 | 西门子公司 | Single phase multilevel inverter |
| CN102891611A (en) * | 2012-06-30 | 2013-01-23 | 华为技术有限公司 | Five-level power converter, and control method and control device for five-level power converter |
| CN103023366A (en) * | 2012-11-19 | 2013-04-03 | 南京理工大学 | Half-bridge five-electrical-level inverter and high-frequency insulation-type half-bridge five-electrical-level inverter |
| CN103151937A (en) * | 2011-12-06 | 2013-06-12 | 上海雷诺尔科技股份有限公司 | Frequency conversion unit supercapacitor assembly charge-discharge control loop |
| CN104764943A (en) * | 2014-01-03 | 2015-07-08 | 国家电网公司 | Modular multilevel converter single-phase inverting test circuit and test method thereof |
| CN106329975A (en) * | 2015-07-10 | 2017-01-11 | 台达电子企业管理（上海）有限公司 | Five-level conversion device |
| CN106787155A (en) * | 2017-02-28 | 2017-05-31 | 华为技术有限公司 | A kind of method of uninterrupted power supply circuit and control circuit |
| US10177683B2 (en) | 2015-09-29 | 2019-01-08 | Huawei Technologies Co., Ltd. | Multi-level inverter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2523332C1 (en) | 2010-12-13 | 2014-07-20 | Абб Текнолоджи Лтд. | Multilevel voltage converter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2766636B1 (en) * | 1997-07-28 | 1999-10-01 | H B Ind | SELF-COMPENSE CONVERTER |
| CN1464627A (en) * | 2002-06-21 | 2003-12-31 | 长沙市为尔自动化技术开发有限公司 | Hybrid five-level high-voltage frequency converter |
| CN100384074C (en) * | 2002-06-28 | 2008-04-23 | 河南电力试验研究所 | Five-level high-voltage frequency converter |
| CN1215638C (en) * | 2003-01-27 | 2005-08-17 | 浙江大学 | Dual positive excitated DC-DC power transfer device with soft switch in three electrical levels |
-
2004
- 2004-12-16 CN CNB2004100734124A patent/CN100386959C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466448C (en) * | 2006-04-17 | 2009-03-04 | 山东新风光电子科技发展有限公司 | Five-level converter structure device |
| CN102035420A (en) * | 2009-09-25 | 2011-04-27 | 富士电机控股株式会社 | Five-level converter |
| CN102035420B (en) * | 2009-09-25 | 2013-10-16 | 富士电机株式会社 | Five-level converter |
| CN102763316A (en) * | 2010-02-15 | 2012-10-31 | 西门子公司 | Single phase multilevel inverter |
| CN101917133A (en) * | 2010-08-30 | 2010-12-15 | 南京航空航天大学 | Five-electrical level inverter |
| CN101917133B (en) * | 2010-08-30 | 2012-08-22 | 南京航空航天大学 | Five-electrical level inverter |
| CN102437764A (en) * | 2011-10-09 | 2012-05-02 | 西安爱科电子有限责任公司 | Seven-electrical level DC-AC converter |
| CN102437764B (en) * | 2011-10-09 | 2014-01-01 | 西安爱科赛博电气股份有限公司 | Seven-electrical level DC-AC converter |
| CN103151937A (en) * | 2011-12-06 | 2013-06-12 | 上海雷诺尔科技股份有限公司 | Frequency conversion unit supercapacitor assembly charge-discharge control loop |
| CN102891611A (en) * | 2012-06-30 | 2013-01-23 | 华为技术有限公司 | Five-level power converter, and control method and control device for five-level power converter |
| CN102891611B (en) * | 2012-06-30 | 2014-10-08 | 华为技术有限公司 | Five-level power converter, and control method and control device for five-level power converter |
| CN103023366A (en) * | 2012-11-19 | 2013-04-03 | 南京理工大学 | Half-bridge five-electrical-level inverter and high-frequency insulation-type half-bridge five-electrical-level inverter |
| CN104764943A (en) * | 2014-01-03 | 2015-07-08 | 国家电网公司 | Modular multilevel converter single-phase inverting test circuit and test method thereof |
| CN106329975A (en) * | 2015-07-10 | 2017-01-11 | 台达电子企业管理（上海）有限公司 | Five-level conversion device |
| CN106329975B (en) * | 2015-07-10 | 2019-02-12 | 台达电子企业管理（上海）有限公司 | Five LCU level conversion units |
| US10177683B2 (en) | 2015-09-29 | 2019-01-08 | Huawei Technologies Co., Ltd. | Multi-level inverter |
| CN106787155A (en) * | 2017-02-28 | 2017-05-31 | 华为技术有限公司 | A kind of method of uninterrupted power supply circuit and control circuit |
| CN106787155B (en) * | 2017-02-28 | 2019-08-20 | 华为技术有限公司 | A kind of method of uninterrupted power supply circuit and control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100386959C (en) | 2008-05-07 |
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Address after: Shenzhen Nanshan District City, Guangdong province 518108 industrial park outside the small pine Tai Bai Lu Bai mang mulberry 6 layer Patentee after: MOSO Power Supply Technology Co., Ltd. Address before: Shenzhen Nanshan District City, Guangdong province 518108 industrial park outside the small pine Tai Bai Lu Bai mang mulberry 6 layer Patentee before: Shenzhen MoSo Power Supply Technology Co., Ltd. |
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Granted publication date: 20080507 Termination date: 20191216 |
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