CN1336715A - Mixed bridge-type zero-voltage and zero-current switch three level DC converter - Google Patents
Mixed bridge-type zero-voltage and zero-current switch three level DC converter Download PDFInfo
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- CN1336715A CN1336715A CN01127182A CN01127182A CN1336715A CN 1336715 A CN1336715 A CN 1336715A CN 01127182 A CN01127182 A CN 01127182A CN 01127182 A CN01127182 A CN 01127182A CN 1336715 A CN1336715 A CN 1336715A
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- 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
Abstract
It consists of input voltage-dividing capacity circuit, blocking capacitor, isolating transformer and rectifier filter circuit. The characteristic is compresing of: (1). three-level bridge arm that voltage stress of switching tube is half of input voltage, zero-voltage on-off can be realized in a much wide load range and MOSFET can be selected, and (2). two-level bridge arm that voltage stress of switching tube input voltage, zero-current no-off can be realized in a much wide load range and IGBT be selected. The advantages are, small volume, light weight, fine dynamic performance.
Description
Technical field
Zero-voltage and zero-current switch mixed type full-bridge three-level DC converter of the present invention, the DC converter of genus transformation of electrical energy device.
Background technology
Along with the development of power electronic technology, more and more higher to the requirement of electrical energy transformer, particularly more and more higher to the requirement of input power factor.The output voltage of circuit generally can reach 760～800V behind three-phase activity coefficient adjustment, and sometimes even reach 1000V, the switch tube voltage quota that this just requires to improve the DC converter of back level makes to be difficult to select suitable power switch pipe.And the voltage stress of three-level DC converter switching tube is input direct voltage half, therefore is easy to select suitable switching tube.
In order to reduce the volume and weight of converter, must improve switching frequency, the soft switch (being zero voltage switch or Zero Current Switch) that this will realistic existing switching tube is to reduce switching loss.At present existing soft switch in three electrical levels DC converter can be divided into two classes: zero voltage switch and zero-voltage and zero-current switch.Two switching tubes in the outside of three-level DC converter of zero-voltage switch can be realized zero voltage switch in very wide loading range, but two switching tubes of the inside can not be realized zero voltage switch when load is light; (patent No.: 00219197.0), its two switching tubes in outside can be realized zero voltage switch in very wide loading range, and two switching tubes in the inside can be realized Zero Current Switch in very wide loading range for the zero-voltage and zero-current switch three-level DC converter.Two switching tubes of outside can be selected MOSFET for use, and two switching tubes of the inside can be selected IGBT for use.For present device level, be easy to buy the IGBT (such as 1200V) of high pressure, so IGBT is with not bringing into play its advantage here.
Summary of the invention
The object of the present invention is to provide a kind of soft switch of in wide loading range, realizing switch, can make full use of injectron IGBT, simultaneously input and output filter volume weight can be reduced again, and the zero-voltage and zero-current switch mixed type full-bridge three-level DC converter of converter dynamic characteristic can be improved.This DC converter comprises input dividing potential drop condenser network, the blocking capacitor circuit, and isolating transformer, current rectifying and wave filtering circuit is characterized in, the inverter bridge circuit is made up of tri-level inversion brachium pontis and two-level inverter arm.Because a brachium pontis of this DC converter is three level brachium pontis, the voltage stress of its switching tube is half of input voltage, can realize zero voltage switch in very wide loading range, therefore can select MOSFET for use; Another brachium pontis is two level brachium pontis, is made up of two switching tubes, and the voltage stress of its switching tube is an input voltage, can realize Zero Current Switch in very wide loading range, therefore can select IGBT for use; The alternating current component of this converter output commutating voltage waveform is very little, therefore can reduce output filter greatly, thereby reduce the volume and weight of filter, and improve the dynamic characteristic of converter; The input current pulsation of this converter is very little, therefore can reduce input filter.
Description of drawings
Accompanying drawing 1, circuit of the present invention are formed schematic diagram.
The circuit embodiments figure of accompanying drawing 2-6, several different composition forms of the present invention.
Accompanying drawing 7, main waveform schematic diagram of the present invention.
The schematic equivalent circuit of accompanying drawing 8-15, each switch mode of the present invention.
Label title in the accompanying drawing 1 in each frame of broken lines: 1, input dividing potential drop condenser network, 2, the tri-level inversion brachium pontis, 3, the two-level inverter arm, 4, the blocking capacitor circuit, 5, isolating transformer, 6, current rectifying and wave filtering circuit.
Embodiment
1-6 narrates concrete composition of the present invention with reference to the accompanying drawings.
Accompanying drawing 1 is that basic circuit of the present invention is formed schematic diagram, in input dividing potential drop condenser network 1, and dividing potential drop capacitor C in
1And Cin
2Capacity equate that and very big, their voltage is half of input supply voltage Vin, i.e. Vcin
1=Vcin
2=Vin/2.
The formation of tri-level inversion brachium pontis 2 is four switching tube Q
1, Q
2, Q
3, Q
4Difference reverse parallel connection diode D
1, D
2, D
3, D
4Junction capacitance in parallel again (or external capacitor) C
1, C
2, C
3, C
4, switching tube Q wherein
1With Q
4Form advance pipe, Q
2With Q
3The sustained diode of two series connection respectively in parallel on the hysteresis pipe of forming
7, D
8With the connection capacitor C
Ss, shunt capacitance C
SsEffect be two couples of switching tube Q
1With Q
4And Q
2With Q
3Switching process couple together.When the converter steady operation, capacitor C
SsOn voltage constant be Vin/2.Q
1, Q
2, Q
3, Q
4Voltage stress be half of input voltage, can in very wide loading range, realize zero voltage switch, therefore can select the switch mosfet pipe for use.
Two-level inverter arm 3 is by two switching tube Q
5With Q
6With two diode D
5With D
6Form.Two diode D
5, D
6Both can be respectively and corresponding switching tube Q
5, Q
6Series connection (as shown in Figure 1) also can be respectively and Q
5, Q
6(shown in accompanying drawing 2～6) in parallel, the voltage stress of its switching tube is an input voltage, can realize Zero Current Switch in very wide loading range, therefore can select injectron IGBT for use.
Isolating transformer 5 all can adopt prior art with current rectifying and wave filtering circuit 6.
Accompanying drawing 2 is the pulsactor L of isolating transformer 5 former limit series connection in Fig. 1
s
Accompanying drawing 3 is with the blocking capacitor C among Fig. 1
bMove on to isolating transformer 5 secondary, with a switching tube Q
bBe in series Q
bThe S utmost point and output rectification two diode D
R1, D
R2Negative electrode link to each other blocking capacitor C
bThe other end link to each other with the centre cap of isolating transformer 5 secondary windings.
Accompanying drawing 4 is with the blocking capacitor C among Fig. 1
bRemove, in current rectifying and wave filtering circuit 6, add two diode D
B1And D
B2And capacitor C
B1I.e. diode D
B1With a capacitor C
B1Be connected in parallel on the output of isolating transformer secondary after the series connection, another diode D
B2Be connected across diode D
B1, capacitor C
B1Serial connection point and filter inductance L
f, filter capacitor C
fSerial connection point between.
Accompanying drawing 5 is same with the blocking capacitor C among Fig. 1
bRemove, in current rectifying and wave filtering circuit 6, add two capacitor C
B1And C
B2And three diode D
B1, D
B2, and D
B3, i.e. diode D
B1With a capacitor C
B1Be attempted by isolating transformer secondary output after the series connection, the another capacitor C
B2With second diode D
B2Be attempted by the input of current rectifying and wave filtering circuit after the series connection, the 3rd diode D
B3On the serial connection point of above-mentioned two series circuits of cross-over connection.
Accompanying drawing 6 is with the blocking capacitor C among Fig. 1
bMove on in the current rectifying and wave filtering circuit, in isolating transformer 5, increase by two secondary windings simultaneously, with three diode D
A1, D
A2, and D
A3The common current reset circuit of forming.
Accompanying drawing 2-6 compares the difference that does not have in essence with accompanying drawing 1, but accompanying drawing 3, accompanying drawing 4 and accompanying drawing 5 can better suppress to export the due to voltage spikes on the rectifying tube.
Be example with accompanying drawing 1 below, in conjunction with the accompanying drawings 7～15 the narration concrete operation principle of the present invention, by accompanying drawing 7 as can be known whole converter 14 kinds of switch mode are arranged in a switch periods, respectively with (t
0(t0 t1), (t constantly),
1t
2), (t
2t
3), (t
3t
4), (t
4t
5), (t
5t
6), (t
6t
7), (t
7t
8), (t
8t
9), (t
9t
10), (t
10t
11), (t
11t
12), (t
12t
13) (t
13t
14) (seeing accompanying drawing 7), wherein, (t
0t
7) be the preceding half period, (t
7t
14) be the later half cycle.Below to (t
0t
7) the working condition of each switch mode make a concrete analysis of.In accompanying drawing 7, made following hypothesis: a) two input dividing potential drop electric capacity are V with two voltages respectively
In/ 2 voltage source substitutes, and output filter circuit is output current I with an electric current
0Current source substitute.1, switch mode 0 (t
0Constantly) (corresponding to accompanying drawing 8)
At t
0Constantly, Q
1, Q
2And Q
6Conducting, v
AB=V
In, former limit powering load, primary current i
pGive blocking capacitor C
bCharging.Output rectifying tube D
R1Conducting, D
R2End.At t
0Constantly, i
p=I
P0=I
0/ K, wherein K is the former secondary turn ratio of transformer.C
bVoltage be V
Cb(t
0).2, switch mode 1 (t
0t
1) (corresponding to accompanying drawing 9)
t
1Constantly turn-off Q
1, i
pGive C
1Capacitor C is passed through in charging simultaneously
SsGive C
4Discharge.Because C is arranged
1And C
4, Q
1Be that no-voltage is turn-offed.This moment L
1kAnd L
fBe in series i
pThe approximate I that keeps
P0Constant.i
pContinue to give C
bCharging.C
1Voltage linear rise C
4Voltage linear descend.At t
1Constantly, C
1Voltage rise to V
In/ 2 o'clock, C
4Voltage drop to 0, A point current potential is V
In/ 2, D
7The nature conducting.3, switch mode 2 (t
1t
2) (corresponding to accompanying drawing 10)
Work as D
7After the conducting, C
4Voltage by pincers 0, therefore can no-voltage open Q
4Q
4With Q
1Dead Time t between the drive signal
d(14)＞t
01In this section the period, v
AB=V
In/ 2, powering load, i are continued in former limit
pGive C
bCharging.4, switch mode 3 (t
2t
3) (corresponding to accompanying drawing 11) t
2Constantly turn-off Q
2, i
pGive C
2Capacitor C is passed through in charging simultaneously
SsGive C
3Discharge.Because C is arranged
2And C
3, Q
2Be that no-voltage is turn-offed.This moment L
1kAnd L
fBe in series i
p=I
P0I
pContinue to give C
bCharging is because C
bVery big, can think that its voltage is constant substantially during this period.C
2Voltage linear rise C
3Voltage linear descend.At t
3Constantly, C
2Voltage rise to V
In/ 2, C
3Voltage drop to 0, D
3The nature conducting.5, switch mode 4 (t
3t
4) (corresponding to accompanying drawing 12)
Work as D
3After the conducting, C
3Voltage by pincers 0, therefore can no-voltage open Q
3During this period, D
3, D
6And Q
6Conducting, v
AB=0.v
CbMake i
pBegin to reduce i
pBe not enough to provide load current, so D
R1And D
R2Conducting simultaneously, the former and deputy limit of transformer winding voltage is zero like this.This moment v
CbAll be added in L
LkOn, i
pReduce v
CbRise.Because L
LkLess, and C
bBigger, therefore can think v
CbSubstantially constant in this switch mode, i
pProximal line reduces.At i
pDrop to zero.The duration of switch mode is: 6, switch mode 5 (t
4t
5) (corresponding to accompanying drawing 13)
In this switch mode, i
pThe trend that reverse flow is arranged, but D
6Existence make i
pRemain on zero, at this moment v
B=-V
CbpTwo rectifying tube conductings simultaneously, the load-sharing electric current.7, switch mode 6 (t
5t
6) (corresponding to accompanying drawing 14)
t
5Constantly turn-off Q
6, this moment Q
6In not electric current flow through so Q
6It is zero-current switching.After very little time-delay, open Q
5, because L
LkExistence, i
pCan not suddenly change Q
6It is zero current turning-on.Because i
pBe not enough in load current is provided, two rectifying tube conductings simultaneously still, the former and deputy limit winding of transformer is clamped in no-voltage.Be added in L this moment
LkOn voltage be-(V
In+ V
Cbp), i
pStarting from scratch in the other direction, linearity increases.At t
6Constantly, i
pBe increased to the load current I that converts former limit in the other direction
0/ K.The time of this switch mode is: 8, switch mode 7 (t
6t
7) (respective figure 14)
From t
6Constantly begin, former limit provides energy for load, gives C simultaneously
bReverse charging.D
R1Turn-off, all load currents all flow through D
R2
At t
7Constantly, turn-off Q
4, begin another half period (t
7t
14), the situation of its work is similar to previously described (t
0t
7).
Example of the present invention is as follows: input ac voltage 380V/50HZ alternating current is V through obtaining direct voltage behind the rectifying and wave-filtering
In=530VDC; Output dc voltage is V
0=54VDC; Output current I
0=50A; The former secondary turn ratio of transformer K=7; Output inductor is L
f=10 μ H; Output filter capacitor is C
f=10000 μ F; Connect capacitor C
SsBe 2.2 μ F; Switching tube Q
1-Q
4(comprise its anti-and diode D
1-D
4With junction capacitance C
1-C
4) be MOSFET (model is IRF460); Switching tube Q
5And Q
6Be IGBT (model is CT60AM-20); Diode D
5, D
6, D
7, and D
8Be DSEI130-06A; Output rectifier diode D
R1And D
R2Be MEK95-06DA; Switching frequency is f
s=50kHZ.
As seen from the above description, the three-level zero-voltage switch DC convertor with clamp diode of the present invention's proposition has following advantage:
1, this converter brachium pontis is three level brachium pontis, and the voltage stress of its switching tube is one of input voltage Half, can in very wide loading range, realize ZVT, therefore can select MOSFET;
2, another brachium pontis is two level brachium pontis, is made up of two switching tubes, and the voltage stress of its switching tube is an input voltage, can realize Zero Current Switch in very wide loading range, therefore can select IGBT for use.
3, the alternating current component of this converter output commutating voltage waveform is very little, therefore can reduce output filter greatly, thereby reduce the volume and weight of filter, and improve the dynamic characteristic of converter.
4, the pulsation of the input current of this converter is very little, therefore can reduce input filter.
Claims (3)
1, a kind of zero-voltage and zero-current switch mixed type full-bridge three-level DC converter comprises input dividing potential drop condenser network, blocking capacitor circuit, isolating transformer, current rectifying and wave filtering circuit, it is characterized in that, also comprise the tri-level inversion brachium pontis and the two-level inverter arm that are connected between input dividing potential drop condenser network and the isolating transformer.
2, according to the described zero-voltage and zero-current switch mixed type of claim 1 full-bridge three-level DC converter, it is characterized in that, the composition of tri-level inversion brachium pontis is, four switching tubes are distinguished reverse parallel connection diode and electric capacity separately, two diodes of connect mutually in parallel between the anode of the negative electrode of second switching tube and the 3rd switching tube, the serial connection point of two diodes is connected in the serial connection point of two electric capacity importing the dividing potential drop condenser network.
3, according to claim 1 or 2 described zero-voltage and zero-current switch mixed type full-bridge three-level DC converters, it is characterized in that, the two-level inverter arm by two switching tubes separately respectively diode of serial or parallel connection formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01127182A CN1120561C (en) | 2001-09-07 | 2001-09-07 | Mixed bridge-type zero-voltage and zero-current switch three level DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01127182A CN1120561C (en) | 2001-09-07 | 2001-09-07 | Mixed bridge-type zero-voltage and zero-current switch three level DC converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1336715A true CN1336715A (en) | 2002-02-20 |
| CN1120561C CN1120561C (en) | 2003-09-03 |
Family
ID=4667168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01127182A Expired - Fee Related CN1120561C (en) | 2001-09-07 | 2001-09-07 | Mixed bridge-type zero-voltage and zero-current switch three level DC converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1120561C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007144758A2 (en) * | 2006-06-16 | 2007-12-21 | Astec International Limited | A zero voltage zero current switching converter |
| CN100571006C (en) * | 2006-05-16 | 2009-12-16 | 中国科学院电工研究所 | Superconducting energy storage bidirectional three-level soft switch DC/DC converter and control method thereof |
| CN101494419B (en) * | 2008-01-21 | 2011-05-18 | 许继集团有限公司 | High efficiency zero voltage, zero current whole bridge converter |
| CN101599713B (en) * | 2009-07-07 | 2011-09-14 | 华中科技大学 | Three-level inverter of single-phase mixed bridge |
| CN102355152A (en) * | 2011-10-09 | 2012-02-15 | 西安爱科电子有限责任公司 | Flying capacitor hybrid three-level DC-AC (Direct Current-Alternating Current) inverter and control method thereof |
| WO2013135057A1 (en) * | 2012-03-13 | 2013-09-19 | 华为技术有限公司 | Three-level inverter |
| CN107070232A (en) * | 2017-01-06 | 2017-08-18 | 南京工业大学 | A kind of molecular cleavage ac driver |
| CN109120171A (en) * | 2017-06-22 | 2019-01-01 | 丰郅(上海)新能源科技有限公司 | The multi-level inverse conversion system of industrial-frequency alternating current is generated by high frequency switching switch control |
| CN111313708A (en) * | 2020-01-13 | 2020-06-19 | 北京理工大学 | Full-bridge DC-DC converter |
| CN112564524A (en) * | 2020-09-24 | 2021-03-26 | 青岛鼎信通讯股份有限公司 | Active self-adaptive auxiliary network and method applied to direct current charging module |
-
2001
- 2001-09-07 CN CN01127182A patent/CN1120561C/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100571006C (en) * | 2006-05-16 | 2009-12-16 | 中国科学院电工研究所 | Superconducting energy storage bidirectional three-level soft switch DC/DC converter and control method thereof |
| WO2007144758A2 (en) * | 2006-06-16 | 2007-12-21 | Astec International Limited | A zero voltage zero current switching converter |
| WO2007144758A3 (en) * | 2006-06-16 | 2008-02-21 | Astec Custom Power Hk Ltd | A zero voltage zero current switching converter |
| US7375984B2 (en) | 2006-06-16 | 2008-05-20 | Astec Custom Power (Hk) Ltd. | Zero voltage zero current switching converter |
| CN101494419B (en) * | 2008-01-21 | 2011-05-18 | 许继集团有限公司 | High efficiency zero voltage, zero current whole bridge converter |
| CN101599713B (en) * | 2009-07-07 | 2011-09-14 | 华中科技大学 | Three-level inverter of single-phase mixed bridge |
| CN102355152B (en) * | 2011-10-09 | 2014-03-12 | 西安爱科赛博电气股份有限公司 | Control method of flying capacitor hybrid three-level DC-AC (Direct Current-Alternating Current) inverter |
| CN102355152A (en) * | 2011-10-09 | 2012-02-15 | 西安爱科电子有限责任公司 | Flying capacitor hybrid three-level DC-AC (Direct Current-Alternating Current) inverter and control method thereof |
| WO2013135057A1 (en) * | 2012-03-13 | 2013-09-19 | 华为技术有限公司 | Three-level inverter |
| CN107070232A (en) * | 2017-01-06 | 2017-08-18 | 南京工业大学 | A kind of molecular cleavage ac driver |
| CN107070232B (en) * | 2017-01-06 | 2019-07-16 | 南京工业大学 | A kind of molecular cleavage ac driver |
| CN109120171A (en) * | 2017-06-22 | 2019-01-01 | 丰郅(上海)新能源科技有限公司 | The multi-level inverse conversion system of industrial-frequency alternating current is generated by high frequency switching switch control |
| CN109120171B (en) * | 2017-06-22 | 2021-10-29 | 丰郅(上海)新能源科技有限公司 | Multi-level inverter system for generating power frequency alternating current under control of high-frequency switch |
| CN111313708A (en) * | 2020-01-13 | 2020-06-19 | 北京理工大学 | Full-bridge DC-DC converter |
| CN111313708B (en) * | 2020-01-13 | 2021-07-27 | 北京理工大学 | Full-bridge DC-DC converter |
| CN112564524A (en) * | 2020-09-24 | 2021-03-26 | 青岛鼎信通讯股份有限公司 | Active self-adaptive auxiliary network and method applied to direct current charging module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1120561C (en) | 2003-09-03 |
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