CN106100333A - High-power soft switch two-way DC DC converter circuit - Google Patents
High-power soft switch two-way DC DC converter circuit Download PDFInfo
- Publication number
- CN106100333A CN106100333A CN201610451779.8A CN201610451779A CN106100333A CN 106100333 A CN106100333 A CN 106100333A CN 201610451779 A CN201610451779 A CN 201610451779A CN 106100333 A CN106100333 A CN 106100333A
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- China
- Prior art keywords
- power
- circuit
- way
- voltage
- soft switch
- 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
- 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
- H02M3/1582—Buck-boost 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
- H02M1/0048—Circuits or arrangements for reducing losses
- H02M1/0054—Transistor switching losses
- H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of high-power soft switch two-way DC DC converter circuit, this circuit includes that the traditional B uck Boost buck topological structure being connected assists network with resonance, the input of described Buck Boost buck topological structure is connected with input DC power Uin, and described resonance auxiliary network is made up of 2 auxiliary capacitors.The half-bridge mid point filtered inductance L1 that VT1 with VT2 is constituted is connected with out-put supply Uout.The present invention is controlled by VT1 and VT2, makes L1 electric current be in reverse intermittent operation, it is achieved the no-voltage of VT1 and VT2 pipe is opened and zero voltage turn-off, reduces its switching loss.Compared with prior art, it is an advantage of the current invention that: high-power application scenario realizes to and fro flow of power, power switch pipe Sofe Switch, reduces switching loss, improves circuit overall efficiency, meanwhile, simple in construction, low cost.
Description
Technical field
The present invention relates to a kind of high-power soft switching mode bidirectional DC-DC converter circuit, belong to power electronics and learn a skill
Field.
Background technology
In fields such as electric automobile, track traffic, photovoltaic generations, all it be unable to do without high-power non-isolated DC-DC converter.As
What chooses converter circuit structure and good control method, Lifting Transform device power density, reduces electromagnetic interference, whole to system
The optimization of body performance, efficiency of energy utilization raising most important.
In track traffic energy regenerating application, it is desirable to its energy in bidirectional flow, owing to its voltage is high (1800V), electricity
Stream is big (2000A).In view of complexity and the Cost Problems of structure, it is typically chosen non-isolation type changer.In the middle of actual application,
Due to the restriction of power device self-characteristic, its switching loss becomes the principal element restricting its switching frequency.Power device
Being generally operational in hard switching state, switching frequency is the highest, and switching loss is the biggest, thus causes transducer effciency to decline.Generally open
Close frequency and be not more than 3kHz.Owing to switching frequency is relatively low, supporting filter inductance is sufficiently bulky.The biggest electromagnetism can be produced simultaneously
Noise.For problems, the application of soft switch technique is only selection.By changing power device current-voltage waveform,
Eliminate the loss in the middle of switching process, reduce switching device current/voltage stress, improve high frequency state downconverter efficiency.To open
Close frequency and bring up to more than 20kHz, reduce filter inductance volume, eliminate electromagnetic noise.
Summary of the invention
The present invention is contemplated to solve the problem that above-mentioned prior art exists, and provides a kind of high-power soft switching mode double
To DC-DC converter circuit.For solving above-mentioned technical problem, the purpose of the present invention can be achieved through the following technical solutions:
High-power soft switch two-way DC-DC converter circuit, it includes input power loop, Buck-Boost buck semi-bridge alternation electricity
Road, resonance auxiliary network, L filter network, out-put supply loop, isolated drive circuit, no-voltage testing circuit, current detecting electricity
Road, it is characterised in that described input power loop and out-put supply loop are accumulator, bank of super capacitors or other type
Electric energy accumulator part.
In described resonance auxiliary network, electric capacity C2 two ends are connected with switching tube VT1 collector and emitter respectively, and resonance is auxiliary
Electric capacity C3 two ends in network are helped to be connected with switching tube VT2 collector and emitter respectively.
Described no-voltage testing circuit voltage takes from VT1 emitter stage (Ue1) and input voltage Uin end.
Described L filter network one terminates VT1 Yu VT2 junction point, and another terminates out-put supply loop.
Output electric current is sampled by Hall element.
Compared with prior art, it is an advantage of the current invention that: use simple circuit structure, by suitable control plan
Slightly, BUCK blood pressure lowering mode of operation and BOOST boost operating mode can be completed, it is achieved to and fro flow of power.Simultaneously can guaranteed output
Switching tube zero voltage turn-off and no-voltage are open-minded, reduce switching loss, improve circuit overall efficiency.
Accompanying drawing explanation
With detailed description of the invention, the present invention is further elaborated with below in conjunction with the accompanying drawings.
Fig. 1 is high-power soft switch two-way DC-DC converter circuit structured flowchart of the present invention.
Fig. 2 is high-power soft switch two-way DC-DC converter circuit BUCK buck mode circuit model of the present invention and electric current
Path.
Fig. 3 is high-power soft switch two-way DC-DC converter circuit BUCK decompression mode electric current of the present invention and driving signal
Logic relation picture.
Fig. 4 is high-power soft switch two-way DC-DC converter circuit BOOST boost mode circuit model of the present invention and electric current
Path.
Fig. 5 is high-power soft switch two-way DC-DC converter circuit BOOST boost mode electric current of the present invention and driving signal
Logic relation picture.
Detailed description of the invention
As it is shown in figure 1, high-power soft switch two-way DC-DC converter circuit and control method, it includes that input power returns
Road (1), Buck-Boost buck semi-bridge alternation circuit (2), resonance auxiliary network (3), L filter network (4), out-put supply return
Road (5), isolated drive circuit (6), no-voltage testing circuit (7), current detection circuit (8).
Described input power (1) and out-put supply loop (5) are accumulator, bank of super capacitors or the storage of other type electricity
Can device.
In described resonance auxiliary network (3), electric capacity C2 two ends are connected with switching tube VT1 collector and emitter respectively, resonance
In auxiliary network, electric capacity C3 two ends are connected with switching tube VT2 collector and emitter respectively.
Described no-voltage testing circuit (7) voltage takes from VT1 emitter stage (Ue1) and input voltage Uin end.
Described L filter network (4) termination VT1 Yu VT2 junction point, another termination out-put supply loop (5).
Output electric current is sampled by Hall element.
There is two kinds of duties, BUCK decompression mode and BOOST and rise pressing mold in high-power soft switch two-way DC-DC converter
Formula.
When being operated in BUCK decompression mode, VT1 has driving Continuity signal, and VT2 is without Continuity signal, is in cut-off state.
Now system has 4 kinds of duties, its equivalent-circuit model and current path as shown in Fig. 2-1,2-2,2-3,2-4, drive and
Current waveform is as shown in Figure 3
(1)t1-t2Period, VT1 give drive signal, current path as shown in Fig. 2-1, inductive current linear increase, energy by
C1 transmits to C4, and when electric current reaches a certain setting value (being detected by Hall element), control system provides VT1 pick-off signal, VT1
Turning off, due to the existence of C2, VT1 is zero voltage turn-off.
(2)t2-t3Period, VT1 ends, and current path is as shown in Fig. 2-2, and inductive current linearly reduces, and inductance energy is by warp
VD2 afterflow is transmitted to C4.During this period, on electric capacity C2, voltage is input supply voltage, and polarity is as shown in Fig. 2-2.
(3)t3-t4Period, inductive current is reduced to zero, and VD2 ends, tension discharge on electric capacity C2, current path such as Fig. 2-3
Shown in, inductive current is reverse.
(4)t4-t5Period, when on electric capacity C2, tension discharge is complete, owing to inductive current can not suddenly change, its electric current necessarily leads to
Crossing VD1 afterflow, as in Figure 2-4, VT1 is in zero-voltage state to current path, now, drives signal, VT1 no-voltage to VT1
Open-minded.Inductive current reduces, and after being reduced to zero, is returned to state shown in Fig. 2-1.
Zero-voltage state detects: when inductive current is by VD1 afterflow, Ue1 point voltage is of substantially equal with Uin, detects Ue1
Point voltage, judges the VT1 no-voltage moment by control system.
During BUCK decompression mode, electric current is with driving signal logic relation as shown in Figure 3.Drive signal when VT1 no-voltage
Carve open-minded, turn off at current setting value point.This control thought adjusts output size of current for being changed by pulse frequency.
When being operated in BOOST boost mode, VT2 has driving Continuity signal, and VT1 is without Continuity signal, is in cut-off state.
Now system has 4 kinds of duties, its equivalent-circuit model and current path as shown in Fig. 4-1,4-2,4-3,4-4, drive and
Current waveform is as shown in Figure 5.
(1)t1-t2Period, VT2 give drive signal, current path as shown in Fig. 4-1, inductive current linear increase, energy by
C4 transmits to L1, and when electric current reaches a certain setting value (being detected by Hall element), control system provides VT2 pick-off signal, VT2
Turning off, due to the existence of C3, VT2 is zero voltage turn-off.
(2)t2-t3Period, VT2 ends, and as shown in the Fig. 4-2, inductance energy transmits to C1 current path through VD1, inductance electricity
Cleanliness reduces.During this period, on electric capacity C3, voltage is input supply voltage, and polarity is as shown in the Fig. 4-2.
(3)t3-t4Period, inductive current is reduced to zero, and VD1 ends, tension discharge on electric capacity C3, current path such as Fig. 4-3
Shown in, inductive current is reverse.
(4)t4-t5Period, when on electric capacity C3, tension discharge is complete, owing to inductive current can not suddenly change, its electric current necessarily leads to
Crossing VD2 afterflow, current path is as shown in Fig. 4-4, and VT2 is in zero-voltage state, now, drives signal, VT2 no-voltage to VT2
Open-minded.Inductive current reduce, after being reduced to zero, be returned to state shown in Fig. 4-1.
Zero-voltage state detects: when inductive current is by VD2 afterflow, and Ue1 point voltage is of substantially equal with reference to ground, detection
Ue1 point voltage, judges the VT2 no-voltage moment by control system.
During BOOST boost mode, electric current is with driving signal logic relation as shown in Figure 5.Drive signal when VT2 no-voltage
Carve open-minded, turn off at current setting value point.This control thought adjusts output size of current for being changed by pulse frequency.
Claims (5)
1. high-power soft switch two-way DC-DC converter circuit, it includes input power loop (1) Buck-Boost buck half
Bridge translation circuit (2) resonance auxiliary network (3) L filter network (4) out-put supply loop (5) isolated drive circuit (6) no-voltage
Testing circuit (7) current detection circuit (8).
High-power soft switch two-way DC-DC converter circuit the most according to claim 1, it is characterised in that:
Described input power (1) and out-put supply loop (5) are accumulator, bank of super capacitors or other type electric energy accumulator
Part.
High-power soft switch two-way DC-DC converter circuit the most according to claim 1, it is characterised in that: resonance assists
In network, electric capacity C2 two ends connect with switching tube VT1 (IGBT device, internal band VD1 fly-wheel diode) collector and emitter respectively
Connect, in resonance auxiliary network electric capacity C3 two ends respectively with switching tube VT2 (IGBT device, internal band VD2 fly-wheel diode) current collection
Pole and emitter stage connect.
High-power soft switch two-way DC-DC converter circuit the most according to claim 1, it is characterised in that: no-voltage is examined
Slowdown monitoring circuit (7) voltage takes from VT1 emitter stage (Ue1) and input voltage Uin end.
High-power soft switch two-way DC-DC converter circuit the most according to claim 1, it is characterised in that:
L filter network (4) one terminates VT1 Yu VT2 junction point, another termination out-put supply loop (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451779.8A CN106100333A (en) | 2016-06-21 | 2016-06-21 | High-power soft switch two-way DC DC converter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451779.8A CN106100333A (en) | 2016-06-21 | 2016-06-21 | High-power soft switch two-way DC DC converter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106100333A true CN106100333A (en) | 2016-11-09 |
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ID=57237582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610451779.8A Pending CN106100333A (en) | 2016-06-21 | 2016-06-21 | High-power soft switch two-way DC DC converter circuit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919826A (en) * | 2017-12-14 | 2018-04-17 | 天津电力机车有限公司 | A kind of train power generation machine excitation chopper based on DSP |
| CN109980934A (en) * | 2019-04-17 | 2019-07-05 | 哈尔滨工业大学 | The two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance |
| CN110829838A (en) * | 2019-10-28 | 2020-02-21 | 南通大学 | Zero-voltage soft-switching bidirectional Buck/Boost converter |
| CN111082662A (en) * | 2019-12-11 | 2020-04-28 | 西安工业大学 | High-gain bidirectional soft switch DC/DC converter based on full-coupling inductor |
| CN111969877A (en) * | 2020-06-23 | 2020-11-20 | 湖南大学 | Control method and device of half-bridge inverter |
| CN115603577A (en) * | 2022-11-28 | 2023-01-13 | 常州是为电子有限公司（Cn） | Buck/Boost self-adaptive switching control method and circuit |
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| CN200990558Y (en) * | 2006-05-10 | 2007-12-12 | 周春香 | Soft switch zero ripple bidirectional DC/DC non-isolating converter |
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| US20090322293A1 (en) * | 2008-06-30 | 2009-12-31 | Infineon Technologies Austria Ag | Switching converter including a rectifier element with nonlinear capacitance |
| CN103944246A (en) * | 2014-04-28 | 2014-07-23 | 青岛大学 | System and method for rapidly charging energy-feedback type lead-acid battery |
| CN104410133A (en) * | 2014-12-19 | 2015-03-11 | 山东大学 | Equalization circuit based on Buck-Boost convertor and bidirectional LC (inductance capacitance) resonant convertor as well as implementation method |
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2016
- 2016-06-21 CN CN201610451779.8A patent/CN106100333A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200990558Y (en) * | 2006-05-10 | 2007-12-12 | 周春香 | Soft switch zero ripple bidirectional DC/DC non-isolating converter |
| JP2009183098A (en) * | 2008-01-31 | 2009-08-13 | Meidensha Corp | Motor drive device |
| US20090322293A1 (en) * | 2008-06-30 | 2009-12-31 | Infineon Technologies Austria Ag | Switching converter including a rectifier element with nonlinear capacitance |
| CN103944246A (en) * | 2014-04-28 | 2014-07-23 | 青岛大学 | System and method for rapidly charging energy-feedback type lead-acid battery |
| CN104410133A (en) * | 2014-12-19 | 2015-03-11 | 山东大学 | Equalization circuit based on Buck-Boost convertor and bidirectional LC (inductance capacitance) resonant convertor as well as implementation method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919826A (en) * | 2017-12-14 | 2018-04-17 | 天津电力机车有限公司 | A kind of train power generation machine excitation chopper based on DSP |
| CN109980934A (en) * | 2019-04-17 | 2019-07-05 | 哈尔滨工业大学 | The two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance |
| CN110829838A (en) * | 2019-10-28 | 2020-02-21 | 南通大学 | Zero-voltage soft-switching bidirectional Buck/Boost converter |
| CN110829838B (en) * | 2019-10-28 | 2021-07-02 | 南通大学 | Zero-voltage soft-switching bidirectional Buck/Boost converter |
| CN111082662A (en) * | 2019-12-11 | 2020-04-28 | 西安工业大学 | High-gain bidirectional soft switch DC/DC converter based on full-coupling inductor |
| CN111082662B (en) * | 2019-12-11 | 2022-11-08 | 西安工业大学 | High-gain bidirectional soft switch DC/DC converter based on full-coupling inductor |
| CN111969877A (en) * | 2020-06-23 | 2020-11-20 | 湖南大学 | Control method and device of half-bridge inverter |
| CN111969877B (en) * | 2020-06-23 | 2021-07-02 | 湖南大学 | Control method and device of half-bridge inverter |
| CN115603577A (en) * | 2022-11-28 | 2023-01-13 | 常州是为电子有限公司（Cn） | Buck/Boost self-adaptive switching control method and circuit |
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Application publication date: 20161109 |
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