CN107370382A - A kind of new double half-bridge converter circuits - Google Patents
A kind of new double half-bridge converter circuits Download PDFInfo
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- CN107370382A CN107370382A CN201710412722.1A CN201710412722A CN107370382A CN 107370382 A CN107370382 A CN 107370382A CN 201710412722 A CN201710412722 A CN 201710412722A CN 107370382 A CN107370382 A CN 107370382A
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- Prior art keywords
- diode
- electric capacity
- anode
- igbt
- negative electrode
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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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
-
- 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
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
Abstract
The invention discloses a kind of new double half-bridge converter circuits, its specific composition includes resistance, inductance, the first to the 3rd electric capacity, first, second IGBT, first, second MOSFET, the first to the 6th diode, first, second transformer.Present invention efficiently solves existing phase-shifted full-bridge converter generally existing to lose Sofe Switch or be the problem of increase soft-switching range takes measures but to cause complicated circuit structure, sacrifice efficiency in the case of underloading.The present invention has the advantages of simple circuit structure, soft-switching range are wide, and output ripple is low, efficiency high.
Description
Technical field
Patent of the present invention discloses a kind of new double half-bridge converter circuits, is related to electric and electronic technical field.
Background technology
With the fast development of China's economy, the application field of Power Electronic Technique is more and more extensive, and they are to power supply
It is required that also more and more higher, makes power supply develop towards the direction of light weight, small size, high efficiency, high frequency.High frequency is improving electricity
While the performance of source, the voltage x current stress increase of power switch pipe is also brought, the problems such as the switching loss increase of device.Adopt
With soft switch technique switching tube can be made to realize that no-voltage is opened or zero-current switching, improves efficiency, and reduce electromagnetism and do
Disturb.Phase-shifting full-bridge DC/DC converters have obtained wide because it realizes the features such as soft switch technique, circuit structure are simple, easy to control
General application.
Traditional phase-shifted full-bridge converter can realize ZVT, and without any extra device, this causes phase shift
Full-bridge converter is especially suitable for middle high power applications.However, there is traditional phase-shifted full-bridge converter the serious of several protrusions to ask
Topic.First, under underloading working condition, converter can not realize the ZVS characteristics of system, so as to cause system effectiveness to reduce, electricity
Magnetic disturbance uprises.Secondly, the unwanted oscillation in converter switching process adds the voltage stress and output voltage ripple of device.
Finally, during the afterflow of converter, conduction loss also dramatically increases.
The content of the invention
Patent technical problem to be solved of the present invention is：To overcome the deficiencies in the prior art, there is provided Yi Zhongxin
The double half-bridge converter circuits of type, the ZVT and Zero Current Switch of switching tube can be realized under underloading, adds conversion
Device realizes the working range of soft switch technique, while significantly reduces output ripple, improves conversion efficiency.
Patent of the present invention uses following technical scheme to solve above-mentioned technical problem：
A kind of new double half-bridge converter circuits, including resistance, inductance, the first to the 3rd electric capacity, first, second
IGBT, first, second MOSFET, the first to the 6th diode, first, second transformer, wherein,
Drain electrode of the emitter stage of first IGBT respectively with input anode, the first MOSFET is connected, the first IGBT
One end respectively with the 2nd IGBT emitter stages, the first electric capacity of colelctor electrode be connected, the 2nd IGBT colelctor electrode respectively with input
End negative pole, one end of the first primary winding, one end of the second primary winding, the 2nd MOSFET source electrode are connected
Connect, the other end of the first electric capacity is connected with the other end of the first primary winding, the first MOSFET source electrode and second
MOSFET drain electrode, one end of the second electric capacity are connected, and the other end of the second electric capacity is another with the second primary winding
End is connected.The negative electrode of first diode and the negative electrode of the second diode, the negative electrode of the 3rd diode, one end phase of inductance
Connection, the anode of the first diode are connected with one end of the first transformer secondary output winding, the negative electrode of the 4th diode, and the two or two
The other end of the anode of pole pipe and the first transformer secondary output winding, one end of the second transformer secondary output winding, the 5th diode
Negative electrode is connected, and the anode of the 3rd diode is connected with the other end of the second transformer secondary output winding, the negative electrode of the 6th diode
Connect, the anode of the 4th diode and the anode of the 5th diode, the anode of the 6th diode, one end of electric capacity, one end of resistance
It is connected and is grounded, the other end of inductance is connected with the other end of the other end of electric capacity, resistance.
Present invention technical characteristics compared with prior art are,
Lagging leg switching tube can realize Zero Current Switch in wide scope, and advanced arm switch pipe can realize zero in wide scope
Voltage switch.The very little that transformer leakage inductance can design, it is substantially reduced duty-cycle loss and the vibration of secondary side commutating voltage.
The each half-bridge structure being made up of transformer, capacitance and two switching tubes, can be formed in transformer terminal mouth
One symmetrical ac square-wave voltage, the secondary of two transformers are connected in series in rectification side, to realize energy in the complete period
Amount by input side is delivered to outlet side, and therefore realizes that the commutating voltages of double half-bridge converter circuits is multistage trapezoidal.
Brief description of the drawings
Fig. 1 is the circuit connection diagram of patent of the present invention,
Wherein：R0For resistance, L0For inductance, C1、C2、C0Respectively first to the 3rd electric capacity, Q1、Q3Respectively first,
Two IGBT, Q2、Q4Respectively first, second MOSFET, D1、D2、D3、D4、D5、D6Respectively first to the 6th diode, T1、T2
Respectively first, second transformer, np1、np2The respectively armature winding of first, second transformer, ns1、ns2Respectively first,
The secondary windings of second transformer.
Fig. 2 is the key operation waveforms schematic diagram of double half-bridge converters of the present invention.
Fig. 3~9 are the equivalent circuit structure schematic diagrames of double half-bridge converters of the present invention.
Main physical amount in above-mentioned accompanying drawing is：D is dutycycle.TsIt is to open the period.ΔImIt is LmRipple current.Δ
VC1With Δ VC2It is C respectively1And C2Ripple voltage.LlklFor T1Leakage inductance be.Llk2For T2Leakage inductance.LmFor T2Magnetizing inductance.
Embodiment
The embodiment of patent of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein
Same or similar label represents same or similar element or the element with same or like function from beginning to end.Lead to below
It is exemplary to cross the embodiment being described with reference to the drawings, and is only used for explaining patent of the present invention, and can not be construed to the present invention
The limitation of patent.The modification that all Spirit Essences according to main technical schemes of the present invention are done, it should all cover the guarantor in the present invention
Within the scope of shield.
The technical scheme of patent of the present invention is described in further detail below in conjunction with the accompanying drawings：
The circuit connection diagram of patent of the present invention is as shown in figure 1, a kind of new double half-bridge converter circuits, including electricity
Resistance, inductance, the first to three electric capacity, first, second IGBT, first, second MOSFET, the first to the 6th diode, first, second
Transformer, wherein,
Drain electrode of the emitter stage of first IGBT respectively with input anode, the first MOSFET is connected, the first IGBT
One end respectively with the 2nd IGBT emitter stages, the first electric capacity of colelctor electrode be connected, the 2nd IGBT colelctor electrode respectively with input
End negative pole, one end of the first primary winding, one end of the second primary winding, the 2nd MOSFET source electrode are connected
Connect, the other end of the first electric capacity is connected with the other end of the first primary winding, the first MOSFET source electrode and second
MOSFET drain electrode, one end of the second electric capacity are connected, and the other end of the second electric capacity is another with the second primary winding
End is connected.
The negative electrode of first diode and the negative electrode of the second diode, the negative electrode of the 3rd diode, one end phase of inductance
Connection, the anode of the first diode are connected with one end of the first transformer secondary output winding, the negative electrode of the 4th diode, and the two or two
The other end of the anode of pole pipe and the first transformer secondary output winding, one end of the second transformer secondary output winding, the 5th diode
Negative electrode is connected, and the anode of the 3rd diode is connected with the other end of the second transformer secondary output winding, the negative electrode of the 6th diode
Connect, the anode of the 4th diode and the anode of the 5th diode, the anode of the 6th diode, one end of electric capacity, one end of resistance
It is connected and is grounded, the other end of inductance is connected with the other end of the other end of electric capacity, resistance.
In a specific embodiment of patent of the present invention, IGBT Q1、Q3Bridge is formed, the diagonal of bridge meets electric capacity C1And change
Depressor T1Primary side winding, be first half-bridge；MOSFET Q2、Q4Bridge is formed, the diagonal of bridge meets electric capacity C2With transformer T2's
Primary side winding, it is second half-bridge, therefore claims double half-bridge converters.Late-class circuit is made up of two full bridge rectifiers, including six
Individual diode, such as accompanying drawing 1.
It is below main circuit structure with accompanying drawing 1, with reference to the concrete operating principle of the narration present invention of accompanying drawing 2~9.By accompanying drawing 2
Understand that whole converter there are 14 kinds of switch mode in a switch periods, be [t respectively0~t1]、[t1~t2]、[t2~t3]、[t3
~t4]、[t4~t5]、[t5~t6]、[t6~t7]、[t7~t8]、[t8~t9]、[t9~t10]、[t10~t11]、[t11~t12]、
[t12~t13]、[t13~t14] (see accompanying drawing 2), wherein, [t0~t7] it is first half cycle, [t7~t14] it is the later half cycle.It is right below
The conscientious concrete analysis of working condition of each switch mode.
Before analysis, make the following assumptions：1) all devices are ideal component；2) MOSFET junction capacity is Coss；3)
Ignore T1Magnetizing inductance, T1Leakage inductance be Llkl；4)T2Magnetizing inductance be Lm, T2Leakage inductance be Llk2；5) output inductor
L0Regard constant-current source as.
Switch [the t of mode 10~t1]
Q1、Q2、D3、D4Conducting.Output inductor is equivalent to arrive primary side, then advanced arm electric current ilagEqual to nIo.Blocking electricity
Hold voltage and exciting current iLmBegun to ramp up from initial value.Power is transmitted from script to output.
Switch [the t of mode 21~t2]
In t1Moment, Q2Shut-off.For simplifying the analysis, capacitance voltage and exciting current have been maxed out being worth.Q2、
Q4Junction capacity pass through constant-current source nIo+ΔImLinear discharge.Advanced arm voltage vlea, T2Armature winding both end voltage vp2With it is whole
Flow voltage vrecStart linearly increasing.
Switch [the t of mode 32~t3]
In t2Moment, vp2Drop to 0, advanced arm mid-point voltage vleaIt is 0.5Vin+ΔVC2.Now, D2Conducting, T2Secondary
Winding is short-circuited.With T2 leakage inductances resonance occurs for primary side junction capacity.
Switch [the t of mode 43~t4]
In t3Moment, vleaDrop to 0.Q4Body diode conducting, Q4It can realize that no-voltage is open-minded.The voltage of lagging leg
Keep constant with electric current.Llk2On voltage be (0.5Vin+ΔVC2), ileaLinear decline.In t4Moment, ileaReach magnetizing inductance
Maximum current value, mode 4 terminates.
Switch [the t of mode 54~t5]
In t4Moment, T2The electric current of secondary windings drop to 0, D3Disconnect.Now, T2Secondary windings both ends voltage
It is-n (0.5Vin+ΔVC2), T1The voltage at secondary windings both ends be n (0.5Vin-ΔVC1).Work as vs2And vs2Sum is less than 0, D6
Conducting.T1 and T2 secondary windings is connected in parallel.Lagging leg electric current declines, and advanced arm electric current opposite direction rises.In t5Moment,
ilagReach-nIo+ΔIm, D4Naturally turn off.
Switch [the t of mode 65~t6]
During mode 6, lagging leg electric current is 0.Accordingly, it is capable to measure only by advanced arm to outlet side transmission.Due to ileaTo C2
During electric discharge, vC2And vrecBegin to decline.Exciting current is begun to decline from maximum.
Switch [the t of mode 76~t7]
In t6Moment, Q1Shut-off.Lagging leg electric current is still 0, therefore Q1Realize zero-current switching.By one section of dead time
Afterwards, Q3Conducting, due to Llk1Limit the climbing speed of electric current, therefore Q3Zero current passing can be realized.At the same time, D1Start
Conducting, T1Secondary windings be short-circuited, lagging leg electric current linear rise, when its electric current rises to nIo, D1And D2Commutation is completed,
D2Naturally turn off.The voltage and current of advanced arm is stablized constant.T1 and T2 transmits power to outlet side simultaneously.
Later half cycle [t7~t14] operation principle and first half cycle [t0~t7] essentially identical, simply electric current, voltage negative side
To change, therefore no longer state more.
As seen from the above description, new double half-bridge converters proposed by the present invention have the following advantages that：
Lagging leg switching tube can realize Zero Current Switch, and advanced arm switch pipe can realize ZVT.
The very little that transformer leakage inductance can design, it is substantially reduced duty-cycle loss and the vibration of secondary side commutating voltage.
Output commutating voltage is three level waveforms, realizes in the complete period energy being delivered to outlet side by input side, and because
This realizes that the commutating voltage of double half-bridge converter circuits is multistage trapezoidal.
Claims (2)
- A kind of 1. new double half-bridge converter circuits, it is characterised in that：Including resistance, inductance, the first to the 3rd electric capacity, First, the 2nd IGBT, first, second MOSFET, the first to the 6th diode, first, second transformer, wherein,Drain electrode of the emitter stage of first IGBT respectively with input anode, the first MOSFET is connected, the first IGBT collection The one end of electrode respectively with the 2nd IGBT emitter stages, the first electric capacity is connected, and the 2nd IGBT colelctor electrode is born with input respectively Pole, one end of the first primary winding, one end of the second primary winding, the 2nd MOSFET source electrode are connected, The other end of first electric capacity is connected with the other end of the first primary winding, the first MOSFET source electrode and second MOSFET drain electrode, one end of the second electric capacity are connected, and the other end of the second electric capacity is another with the second primary winding End is connected；The negative electrode of first diode and the negative electrode of the second diode, the negative electrode of the 3rd diode, one end phase of inductance Connection, the anode of the first diode are connected with one end of the first transformer secondary output winding, the negative electrode of the 4th diode, and the two or two The other end of the anode of pole pipe and the first transformer secondary output winding, one end of the second transformer secondary output winding, the 5th diode Negative electrode is connected, and the anode of the 3rd diode is connected with the other end of the second transformer secondary output winding, the negative electrode of the 6th diode Connect, the anode of the 4th diode and the anode of the 5th diode, the anode of the 6th diode, one end of electric capacity, one end of resistance It is connected and is grounded, the other end of inductance is connected with the other end of the other end of electric capacity, resistance.
- A kind of 2. new double half-bridge converter circuits as claimed in claim 1, it is characterised in that：Each half-bridge is included at least One transformer, energy is delivered to outlet side by input side to realize in the complete period, and therefore realizes double half bridgings The multi-ladder output waveform of converter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412722.1A CN107370382A (en) | 2017-06-05 | 2017-06-05 | A kind of new double half-bridge converter circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412722.1A CN107370382A (en) | 2017-06-05 | 2017-06-05 | A kind of new double half-bridge converter circuits |
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| Publication Number | Publication Date |
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| CN107370382A true CN107370382A (en) | 2017-11-21 |
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|---|---|---|---|
| CN201710412722.1A Pending CN107370382A (en) | 2017-06-05 | 2017-06-05 | A kind of new double half-bridge converter circuits |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964475A (en) * | 2018-08-16 | 2018-12-07 | 汕头大学 | A kind of novel Zero-voltage switch full-bridge direct current converter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860216A (en) * | 2010-05-28 | 2010-10-13 | 南京航空航天大学 | Inductively coupled current doubler rectifying mode full-bridge DC converter |
| KR20170059390A (en) * | 2015-11-20 | 2017-05-30 | 숭실대학교산학협력단 | Soft-switching full-bridge converter and control method thereof |
-
2017
- 2017-06-05 CN CN201710412722.1A patent/CN107370382A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860216A (en) * | 2010-05-28 | 2010-10-13 | 南京航空航天大学 | Inductively coupled current doubler rectifying mode full-bridge DC converter |
| KR20170059390A (en) * | 2015-11-20 | 2017-05-30 | 숭실대학교산학협력단 | Soft-switching full-bridge converter and control method thereof |
Non-Patent Citations (2)
| Title |
|---|
| DUNISHA S等: "A ZVS-PWM Full-Bridge Converter With Reduced Conduction Losses", 《IEEE TRANSACTIONS ON POWER ELECTRONICS》 * |
| 陈仲等: "ZVS全桥变换器辅助网络技术的比较研究", 《电工技术学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964475A (en) * | 2018-08-16 | 2018-12-07 | 汕头大学 | A kind of novel Zero-voltage switch full-bridge direct current converter |
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Application publication date: 20171121 |