CN109462333A - A kind of source continuous input current active switch capacitor Z boost chopper - Google Patents
A kind of source continuous input current active switch capacitor Z boost chopper Download PDFInfo
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- CN109462333A CN109462333A CN201810704085.XA CN201810704085A CN109462333A CN 109462333 A CN109462333 A CN 109462333A CN 201810704085 A CN201810704085 A CN 201810704085A CN 109462333 A CN109462333 A CN 109462333A
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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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of source continuous input current active switch capacitor Z boost chopper, including direct-current input power supplyingV in , the first inductance (L 1), the second inductance (L 2), first capacitor (C 1), the second capacitor (C 2), third capacitor (C 3), first diode (D 1), the second diode (D 2), third diode (D 3), the 4th diode (D 4), first switch tube (S 1 ), second switch (S 2 ), output capacitance (C out ) and load.Occasion of the present invention compared to voltage gain with higher and lower capacitor, switch and diode voltage stress and continuous input currents such as Boost, the quasi- Z source converters of tradition, suitable for non-isolation type high-gain DC voltage transformation.
Description
Technical field
The present invention relates to DC/DC converter fields, and in particular to a kind of source continuous input current active switch capacitor Z boosting
Chopper circuit.
Background technique
In the renewable energy systems such as photovoltaic cell and fuel cell, the DC/DC of high voltage gain is needed to convert
Device increases its output voltage, to drive DC load or inverter.Traditional DC/DC booster converter is by switch duty
Than the limitation of, element voltage stress etc., high voltage gain and high output voltage cannot achieve.By taking Boost circuit as an example, voltage
Gain is 1/ (1-D) (D is duty ratio), could obtain higher voltage gain when duty ratio is close to 1；It is switched and two poles
The voltage stress of pipe is equal to output voltage, and when output voltage is higher, voltage stress is also larger.Emerging DC/DC in recent years
Converter is boosted by using the single source Z or quasi- Z source network, has obtained higher voltage gain, high-gain Z such as altogether
The voltage gain of source converter is (2-2D)/(1-2D) (D is duty ratio), but its voltage gain, which remains unchanged, the space of promotion.
On the basis of the above circuit, there is the DC/DC converter based on multiple sources Z and the quasi- source Z, as Hybrid Z source DC/DC becomes
Parallel operation, voltage gain obtain further promoted reaches 1/ (1-4D) (D is duty ratio), but the inductance and capacitor used compared with
It is more.Meanwhile the above all of DC/DC converter based on the single or multiple sources Z and the quasi- source Z is not apparent from the voltage for reducing switch
Stress, therefore output voltage amplitude is restricted.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, propose continuous input current includes active switch
The source the Z boost chopper of capacitor.
The purpose of the present invention is achieved through the following technical solutions.
Direct-current input power supplying V is specifically included in circuit of the present inventionin, the first inductance, the second inductance, first capacitor, second electricity
Appearance, third capacitor, first diode, the second diode, third diode, the 4th diode, first switch tube, second switch
Pipe, output capacitance and load.
The specific connection type of circuit of the present invention are as follows: direct-current input power supplying VinAnode and the first inductance source electrode, first
The connection of one end of the cathode of diode and the second capacitor；The drain electrode of first switch tube, the cathode of the second diode and third capacitor
One end connection；The source electrode of second switch, the anode of first diode are connected with the other end of third capacitor；First inductance
The other end, one end of first capacitor, the anode of third diode, one end of output capacitance are connected with the cathode of load；First electricity
The drain electrode of the other end of appearance, the anode of the second diode, second switch is connected with one end of the second inductance；Second inductance it is another
The anode connection of one end, the other end of the second capacitor, the cathode of third diode and the 4th diode；The yin of 4th diode
The anode connection of pole, the other end of output capacitance and load.
Compared with prior art, circuit of the present invention has the advantage that are as follows: is M compared to voltage gain on voltage gain
The source the high-gain Z transformation on the total ground that traditional Boost of=1/ (1-D), voltage gain are M=(2-2D)/(1-2D)
Device and voltage gain are the DC/DC converters such as the Hybrid Z source converter of M=1/ (1-4D), have higher voltage gain,
Its voltage gain is M=2/ (1-4D)；It is V compared to switching voltage stress on switching voltage stresss=VoutIt is traditional
Boost, switching voltage stress Vs=Vout-VinIt is total ground high-gain Z source converter and switching voltage stress be Vs
=VoutThe DC/DC converter such as Hybrid Z source converter, there is smaller switching voltage stress, voltage stress Vs=
Vout/2.When input voltage is identical with output voltage, the switch duty of circuit of the present invention is smaller, and switch stress is smaller, and
Continuous input current, therefore circuit of the present invention has very broad application prospect.
Detailed description of the invention
Fig. 1 is a kind of source continuous input current active switch capacitor Z boost chopper structure chart.
Fig. 2 is the voltage and current waveform of a switch periods main element.
Fig. 3 a~3b is circuit modal graph in a switch periods.
Fig. 4 is that circuit proposed by the present invention, Boost, high-gain Z source converter altogether and the source Hybrid Z become
The voltage gain of parallel operation and the relational graph of duty ratio D.
Fig. 5 is that circuit proposed by the present invention, Boost, high-gain Z source converter altogether and the source Hybrid Z become
The switching voltage stress of parallel operation and the ratio V of input voltages/VinWith the relational graph of voltage gain.
Specific embodiment
Specific embodiments of the present invention are specifically described below in conjunction with attached drawing, but implementation of the invention is not limited to
This, if it need to be pointed out that having the not special symbol or process of detailed description below, it is existing to be that those skilled in the art can refer to
Technology realize or understand.
Basic Topological of the invention and each main element voltage and current reference direction are as shown in Figure 1.
A kind of source continuous input current active switch capacitor Z boost chopper comprising direct-current input power supplying Vin, first
Inductance L1, the second inductance L2, first capacitor C1, the second capacitor C2, third capacitor C3, first diode D1, the second diode D2,
Three diode D3, the 4th diode D4, first switch tube S1, second switch S2, output capacitance CoutAnd load.The direct current
Input power VinAnode and the first inductance L1One end connection；The direct-current input power supplying VinCathode, first switch tube
S1Source electrode, first diode D1Cathode and the second capacitor C2One end connection；The first switch tube S1Drain electrode,
Two diode D2Cathode and third capacitor C3One end connection；
The second switch S2Source electrode, first diode D1Anode and third capacitor C3The other end connection；
The first inductance L1The other end, first capacitor C1One end, third diode D3Anode, output capacitance
CoutOne end connected with the cathode of load；The first capacitor C1The other end, the second diode D2Anode, second switch
Pipe S2Drain electrode and the second inductance L2One end connection；The second inductance L2The other end, the second capacitor C2The other end,
Third diode D3Cathode and the 4th diode D4Anode connection；The 4th diode D4Cathode, output capacitance
CoutThe other end and load anode connection.
For easy analysis, the device in circuit structure is accordingly to be regarded as ideal component.First switch tube S1With second switch S2
Driving signal VGS, first diode D1Electric current iD1, the second diode D2Electric current iD2, third diode D3Electric current iD3, the four or two
Pole pipe D4Electric current iD4, the first inductance L1Electric current iL1, the second inductance L2Electric current iL2, first capacitor C1Voltage VC1, the second capacitor C2Electricity
Press VC2, third capacitor C3Voltage VC3, output capacitance CoutVoltage VCoWith output voltage VoutWaveform diagram it is as shown in Figure 2.
In t0~t1In the stage, converter is as shown in Figure 3a in the modal graph in this stage, first switch tube S1And second switch
S2Driving signal VGSFor high level, first switch tube S1With second switch S2Conducting, first diode D1, the second diode
D2With third diode D3Bear backward voltage cut-off, the 4th diode D4Bear forward voltage conducting.Direct-current input power supplying Vin、
First capacitor C1With third capacitor C3Pass through first switch tube S1With second switch S2To the first inductance L1Charging, the second capacitor C2
With third capacitor C3Pass through first switch tube S1With second switch S2To the second inductance L2Charging, first capacitor C1, the second capacitor
C2With third capacitor C3Pass through first switch tube S1, second switch S2With the 4th diode D4To output capacitance CoutCharging and to
Load supplying.
In t1~t2In the stage, converter is as shown in Figure 3b in the modal graph in this stage, the driving signal V of switching tube SGSIt is low
Level, first switch tube S1With second switch S2Shutdown, first diode D1, the second diode D2With third diode D3It bears
Forward voltage conducting, the 4th diode D4Bear backward voltage cut-off.Direct-current input power supplying VinWith the first inductance L1Pass through third
Diode D3To the second capacitor C2Charging, the second inductance L2Pass through third diode D3Give first capacitor C1Charging, direct current input electricity
Source Vin, the first inductance L1With the second inductance L2Pass through first diode D1, the second diode D2With third diode D3Give third electricity
Hold C3Charging, output capacitance CoutIt powers to the load.
The voltage gain of circuit of the present invention calculates as follows.
By the first inductance L1With the second inductance L2Average value of the voltage in a switch periods be zero, can be obtained following
Relational expression.
(Vin+VC1+VC3)ton+(Vin-VC2)toff=0 (1)
(VC2+VC3)ton+(VC2-VC3)toff=0 (2)
(Vin+VC1+VC2+2VC3)ton+(Vin-VC1-VC2)toff=0 (3)
(Vout+Vin+VC3)ton+(Vin-VC3)toff=0 (4)
Output voltage V can be obtained in simultaneous solution formula (1), (2), (3), (4)outWith DC input voitage VinAnd switch duty
Relationship than D.
The voltage gain of traditional Boost is 1/ (1-D) (D is duty ratio), high-gain Z source converter altogether
Voltage gain is (2-2D)/(1-2D) (D is duty ratio), and the voltage gain of the source Hybrid Z DC/DC converter is 1/ (1-4D)
(D is duty ratio), the mentioned circuit of the present invention and Boost, high-gain Z source converter altogether and Hybrid Z source DC/
The steady-state gain of DC converter compares figure as shown in figure 4, as can be seen from Figure 4, at identical conditions, the voltage gain of this circuit is most
It is high.
The switch tube voltage Stress calculation of circuit of the present invention is as follows.
First switch tube S1With second switch S2When shutdown, switch tube voltage stress VS1And VS2For
VS1=VS2=VC3 (6)
Simultaneous solution formula (1), (2), (3), (4), (5), (6) available first switch tube S1With second switch S2Electricity
Compression is
The switch tube voltage stress of traditional Boost is Vs=Vout, the switch of high-gain Z source converter altogether
Tube voltage stress is Vs=Vout-Vin, the switch tube voltage stress of the source Hybrid Z DC/DC converter is Vs=Vout, the present invention
Mentioned circuit and the switching tube of Boost, high-gain Z source converter altogether and the source Hybrid Z DC/DC converter electricity
Compression compares figure as shown in figure 5, as can be seen from Figure 5, at identical conditions, the switch tube voltage stress of this circuit is minimum.
Claims (4)
1. a kind of source continuous input current active switch capacitor Z boost chopper, it is characterised in that including direct-current input power supplyingV in , the first inductance (L 1), the second inductance (L 2), first capacitor (C 1), the second capacitor (C 2), third capacitor (C 3), first diode
(D 1), the second diode (D 2), third diode (D 3), the 4th diode (D 4), first switch tube (S 1 ), second switch
(S 2 ), output capacitance (C out ) and load.
2. a kind of source continuous input current active switch capacitor Z boost chopper according to claim 1, feature exist
In:
The direct-current input power supplyingV in Anode and the first inductance (L 1) one end connection；
The direct-current input power supplyingV in Cathode, first switch tube (S 1) source electrode, first diode (D 1) cathode and second
Capacitor (C 2) one end connection；
The first switch tube (S 1) drain electrode, the second diode (D 2) cathode and third capacitor (C 3) one end connection；
The second switch (S 2) source electrode, first diode (D 1) anode and third capacitor (C 3) the other end connection；
First inductance (L 1) the other end, first capacitor (C 1) one end, third diode (D 3) anode, output electricity
Hold (C out ) one end connected with the cathode of load；
The first capacitor (C 1) the other end, the second diode (D 2) anode, second switch (S 2) drain electrode and second
Inductance (L 2) one end connection；
Second inductance (L 2) the other end, the second capacitor (C 2) the other end, third diode (D 3) cathode and the 4th
Diode (D 4) anode connection；
4th diode (D 4) cathode, output capacitance (C out ) the other end and load anode connection.
3. a kind of source continuous input current active switch capacitor Z boost chopper according to claim 1, feature exist
In: output voltageV out With DC input voitageV in And duty cycle of switchingDRelationship be。
4. a kind of source continuous input current active switch capacitor Z boost chopper according to claim 1, feature exist
In: first switch tube (S 1 ) and second switch (S 2 ) voltage stress is
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704085.XA CN109462333B (en) | 2018-06-30 | 2018-06-30 | Z-source boost chopper circuit of input current continuous active switch capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810704085.XA CN109462333B (en) | 2018-06-30 | 2018-06-30 | Z-source boost chopper circuit of input current continuous active switch capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109462333A true CN109462333A (en) | 2019-03-12 |
| CN109462333B CN109462333B (en) | 2023-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810704085.XA Active CN109462333B (en) | 2018-06-30 | 2018-06-30 | Z-source boost chopper circuit of input current continuous active switch capacitor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861576A (en) * | 2019-04-16 | 2019-06-07 | 哈尔滨工业大学 | A kind of Z-source inverter allowing work in discontinuous conduct mode |
| WO2020246864A1 (en) * | 2019-06-07 | 2020-12-10 | Samsung Electronics Co., Ltd. | Boost amplifier |
| AT523409B1 (en) * | 2020-07-24 | 2021-08-15 | Himmelstoss Dipl Ing Dr Felix | DC / DC converter with constant input current |
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| CN203590033U (en) * | 2013-08-05 | 2014-05-07 | 江苏博纬新能源科技有限公司 | High gain DC/DC converter applied in photovoltaic inverter MPPT link |
| CN107565811A (en) * | 2017-08-10 | 2018-01-09 | 燕山大学 | High-gain Double-input direct-current converter and modulator approach based on switched capacitor network |
| CN208862745U (en) * | 2018-06-30 | 2019-05-14 | 华南理工大学 | A kind of source continuous input current active switch capacitor Z boost chopper |
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2018
- 2018-06-30 CN CN201810704085.XA patent/CN109462333B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203590033U (en) * | 2013-08-05 | 2014-05-07 | 江苏博纬新能源科技有限公司 | High gain DC/DC converter applied in photovoltaic inverter MPPT link |
| CN107565811A (en) * | 2017-08-10 | 2018-01-09 | 燕山大学 | High-gain Double-input direct-current converter and modulator approach based on switched capacitor network |
| CN208862745U (en) * | 2018-06-30 | 2019-05-14 | 华南理工大学 | A kind of source continuous input current active switch capacitor Z boost chopper |
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| ARASH TORKAN等: "A Novel Nonisolated Z-Source DC–DC Converter for Photovoltaic Applications", 《IEEE》, pages 4574 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861576A (en) * | 2019-04-16 | 2019-06-07 | 哈尔滨工业大学 | A kind of Z-source inverter allowing work in discontinuous conduct mode |
| WO2020246864A1 (en) * | 2019-06-07 | 2020-12-10 | Samsung Electronics Co., Ltd. | Boost amplifier |
| US11444577B2 (en) | 2019-06-07 | 2022-09-13 | Samsung Electronics Co., Ltd. | Boost amplifier |
| AT523409B1 (en) * | 2020-07-24 | 2021-08-15 | Himmelstoss Dipl Ing Dr Felix | DC / DC converter with constant input current |
| AT523409A4 (en) * | 2020-07-24 | 2021-08-15 | Himmelstoss Dipl Ing Dr Felix | DC / DC converter with constant input current |
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| CN109462333B (en) | 2023-10-17 |
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