CN1322660C - Switch PWM convertor working at zero voltage and zero current of full bridge - Google Patents
Switch PWM convertor working at zero voltage and zero current of full bridge Download PDFInfo
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- CN1322660C CN1322660C CNB2003101076565A CN200310107656A CN1322660C CN 1322660 C CN1322660 C CN 1322660C CN B2003101076565 A CNB2003101076565 A CN B2003101076565A CN 200310107656 A CN200310107656 A CN 200310107656A CN 1322660 C CN1322660 C CN 1322660C
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Abstract
The present invention belongs to a DC power source device, more specifically, the present invention discloses a full-bridge pulse width modulation (PWM) converter for a zero-voltage zero-current switch of phase-shifting control, which comprises a full-bridge PWM converter composed of four power tubes (S1 to S4), eight diodes (D1 to D8), three capacitors (C0, C1 and C2), a transformer (T), filter inductor (L0) and a power source (Vin). The present invention is characterized in that the present invention also comprises a winding (Lc) and a diode (Dc), wherein an unlike terminal of the winding (Lc) is connected with a like terminal of the filter inductor (L0), and the like terminal of the winding (Lc) is connected with the negative electrode of the diode (Dc) of which the positive electrode is connected with the positive electrode of the diode (D8); the winding (Lc) is coupled with the filter inductor (L0). No dissipative element exists in the auxiliary circuit of the present invention, the inductor does not need energy storage in advance, the current stress on a primary side is not increased, so the operation is reliable; a high-frequency non inductive capacitor with high cost is removed in the novel circuit structure of the present invention, the cost of the whole PWM converter is reduced, and the present invention has the advantages of reasonable design, reliable operation and large popularization value.
Description
Technical field
The invention belongs to a kind of continuous-current plant, be specifically related to a kind of phase shifting control full-bridge zero-voltage ZCS PWM (pulse width modulation) converter.
Background technology
For power density and the delivery efficiency that improves high power DC/DC converter, reduce switching loss, many soft switch techniques have appearred in recent years, and wherein the phase shifting control Full Bridge Zero Voltage and Zero Current Switch PWM Transducer is a kind of desirable circuit structure.It can realize the soft switch of power tube in very big load variations scope, and converter kept constant frequency control, and power density and delivery efficiency all improve a lot.Adopted the zero-voltage and zero-current switch mode owing to power tube in this kind converter, therefore the switching frequency of converter can significantly improve, thereby the volume of transformer used in the converter and filter inductance, weight are reduced greatly, and converter complete machine power density improves greatly; Power tube has adopted the zero-voltage and zero-current switch mode, makes the switching loss of power tube significantly reduce, and converter underloading delivery efficiency significantly improves energy savings.At present this kind converter circuit structure adopts Circuit Fault on Secondary Transformer auxiliary circuit in parallel mostly, utilizes storage capacitor as the reverse blocking voltage source primary current that resets, and realizes the Zero Current Switch of lagging leg.The shortcoming of this class circuit structure is: the energy of storage capacitor needs to be provided during through-put power by former limit, therefore must increase the current stress on former limit, the corresponding raising of switching tube current class, and the converter cost increases.And storage capacitor need adopt the noninductive electric capacity of expensive high frequency, more increased the complete machine cost of converter.Because this electric capacity need provide whole load currents at converter between the afterflow period, so its working condition is more abominable, be the key factor of restriction converter complete machine functional reliability.
Summary of the invention
In order to overcome the high and lower defective of functional reliability of existing Full Bridge Zero Voltage and Zero Current Switch PWM Transducer complete machine cost, provide that a kind of cost is lower, the Full Bridge Zero Voltage and Zero Current Switch PWM Transducer of reliable operation.The present invention is achieved by following proposal: a kind of Full Bridge Zero Voltage and Zero Current Switch PWM Transducer, it comprises four power tube (S
1To S
4), eight diode (D
1To D
8), three electric capacity (C
0, C
1And C
2), transformer T, filter inductance L
0With the full bridge PWM converter that power supply Vin is formed, the positive pole of power supply Vin connects a power tube S
1Collector electrode, a diode D
1Negative pole, a capacitor C
1An end, No. three power tube S
3Collector electrode and No. three diode D
3Negative pole, a power tube S
1Emitter connect diode D No. one
1Positive pole, a capacitor C
1The other end, No. two power tube S
2Collector electrode, No. two diode D
2Negative pole, No. two capacitor C
2An end and an end of transformer T primary coil, No. three power tube S
3Emitter connect diode D No. three
3Positive pole, No. four power tube S
4Collector electrode, No. four diode D
4Negative pole and the other end of transformer T primary coil, the negative pole of power supply Vin connects power tube S No. two
2Emitter, No. two diode D
2Positive pole, No. two capacitor C
2The other end, No. four power tube S
4Emitter and No. four diode D
4Positive pole, an end of transformer T secondary coil connects diode D No. five
5Positive pole and No. six diode D
6Negative pole, the other end of transformer T secondary coil connects diode D No. seven
7Positive pole and No. eight diode D
8Negative pole, No. five diode D
5Negative pole connect diode D No. seven
7Negative pole and filter inductance L
0End of the same name, filter inductance L
0Non-same polarity connect No. zero capacitor C
0An end, No. zero capacitor C
0The other end connect diode D No. eight
8Positive pole and No. six diode D
6Positive pole, it also comprises winding L
cWith diode D
c, winding L
cNon-same polarity connect filter inductance L
0End of the same name, winding L
cEnd of the same name connect diode D
cNegative pole, diode D
cPositive pole connect diode D
8Positive pole, winding L
cWith filter inductance L
0Coupling.The circuit structure of converter as shown in Figure 1, by winding L
cWith diode D
cThe auxiliary circuit of forming is positioned at secondary side, S
1And S
2Constitute leading-bridge, S
3And S
4Constitute lagging leg, L
LkBe transformer leakage inductance, the converter using phase-shift control mode is passed through S
1, S
2, S
3And S
4Base input signal, R
0Be load resistance.The present invention utilizes its induced electromotive force that produces between the afterflow period as the reverse blocking voltage source by introducing an auxiliary winding that is coupled with filter inductance, and primary current is reset to zero.Auxiliary circuit is made up of coupling inductance and continued flow tube, and is simple in structure, do not have dissipative cell or active switch.Inductance need not energy storage in advance, does not increase primary current stress, so reliable operation.The novel circuit structure has been abandoned the noninductive electric capacity of expensive high frequency, has reduced the complete machine cost.The novel circuit structure has good versatility, and the full-bridge converter that adopts the absorption of different clamp modes such as capacitance-resistance, secondary passive-clamp or active-clamp all is suitable for.It is igbt that main switch all adopts IGBT, and operating frequency can be increased to 100kHz, and power density and light-load efficiency significantly improve.The novel circuit structure has been applied in 3kW, in the full-bridge converter of output voltage 350VDC.That the present invention has is reasonable in design, reliable operation and have the advantage of big promotional value.
Description of drawings
Fig. 1 is a structural representation of the present invention, Fig. 2 to Fig. 7 is respectively six kinds of mode of operation schematic diagrames of six operating time section circuit in the embodiment of the present invention one, Fig. 8 is the working waveform figure of execution mode one, Fig. 9 is the structural representation of execution mode two, and Figure 10 is the structural representation of execution mode three.
Embodiment
Embodiment one: specify present embodiment below in conjunction with Fig. 1 to Fig. 8.It is by four power tube (S
1To S
4), eight diode (D
1To D
8), three electric capacity (C
0, C
1And C
2), transformer T, filter inductance L
0, winding L
c, diode D
cForm with power supply Vin, the positive pole of power supply Vin connects a power tube S
1Collector electrode, a diode D
1Negative pole, a capacitor C
1An end, No. three power tube S
3Collector electrode and No. three diode D
3Negative pole, a power tube S
1Emitter connect diode D No. one
1Positive pole, a capacitor C
1The other end, No. two power tube S
2Collector electrode, No. two diode D
2Negative pole, No. two capacitor C
2An end and an end of transformer T primary coil, No. three power tube S
3Emitter connect diode D No. three
3Positive pole, No. four power tube S
4Collector electrode, No. four diode D
4Negative pole and the other end of transformer T primary coil, the negative pole of power supply Vin connects power tube S No. two
2Emitter, No. two diode D
2Positive pole, No. two capacitor C
2The other end, No. four power tube S
4Emitter and No. four diode D
4Positive pole, an end of transformer T secondary coil connects diode D No. five
5Positive pole and No. six diode D
6Negative pole, the other end of transformer T secondary coil connects diode D No. seven
7Positive pole and No. eight diode D
8Negative pole, No. five diode D
5Negative pole connect diode D No. seven
7Negative pole and filter inductance L
0End of the same name, filter inductance L
0Non-same polarity connect No. zero capacitor C
0An end, No. zero capacitor C
0The other end connect diode D No. eight
8Positive pole and No. six diode D
6Positive pole, power tube (S
1To S
4) all be igbt, winding L
cNon-same polarity connect filter inductance L
0End of the same name, winding L
cEnd of the same name connect diode D No. ten
cNegative pole, No. ten diode D
cPositive pole connect diode D No. eight
8Positive pole, winding L
cWith filter inductance L
0Coupling.
Heavy line partly is the circuit structure part of this time period real work among Fig. 2 to Fig. 7.During the transformer power output, because auxiliary winding L
cWith filter inductance L
0Coupling, L
cTwo ends will produce induced electromotive force V
Lc, but because diode D
cPartially anti-, so do not have electric current in the auxiliary circuit, primary current stress remains unchanged.When converter leading-bridge switching tube turn-offed, secondary voltage began to reduce, L
0Enter the afterflow stage.Work as L
0It is low right when high that both end voltage polarity becomes a left side, induced potential V
IcPolarity upset.When further dropping to, secondary voltage satisfies D
cDuring turn-on condition, L
cBegin to participate in the afterflow process.At this moment, induced potential V
LcReflex to former limit, constitute the reverse blocking voltage source and make primary current i
pBe dropped rapidly to zero, at this moment switching hysteresis arm power tube S
3And S
4, can realize Zero Current Switch.Be easy analysis, suppose filter inductance L
0Enough big equivalence is constant-current source I
0, filter capacitor C
0Equivalence is constant pressure source V
0, transformer is an ideal transformer.Converter can be divided into six time periods in half work period describes, this six time periods corresponding respectively six kinds of circuit working patterns, work wave and equivalent electric circuit such as Fig. 8 and Fig. 2 are to shown in Figure 7.
Pattern 1 (M
1Period): S
1, S
4, D
5And D
8Conducting, input power is sent to load through transformer and rectifier bridge.Because auxiliary winding L
cWith L
0Coupling, L
cTwo ends will produce induced electromotive force V
LC, but because D
cPartially anti-, so do not have electric current in the auxiliary circuit, primary current stress remains unchanged.
Pattern 2 (M
2Period): t
2Moment leading-bridge switching tube S
1Turn-off primary current i
pFrom S
1Transfer to C
1And C
2In the branch road, inductive current I
0Reflex to former limit and C
1And C
2Produce resonance, give C
1Charging makes C
2Discharge.Because capacitance voltage can not suddenly change, so S
1The collection emitter voltage be zero, S
1At C
1And C
2Effect no-voltage is down turn-offed.S has no progeny in the pass
1The both end voltage linear growth.In this period, transformer original edge voltage V
AbWith commutating voltage V
RecLinear decline worked as V
RecDrop to and be lower than output voltage V
0The time, filter inductance L
0The both end voltage polarity upset is worked as V
RecFurther drop to and satisfy D
cDuring turn-on condition, D
cThe positively biased conducting, auxiliary winding L
cBegin to participate in the change of current.
Mode 3 (M
3Period): t
3Constantly, V
AbDrop to zero, D
2After this nature conducting can trigger S
2No-voltage is open-minded.Load current is by former limit winding, S
4And D
2Afterflow.L
cThe induced potential V at two ends
LcReflex to the former limit of transformer, constitute a reverse blocking voltage source and make primary current i
pDescend rapidly.t
4Moment i
pDrop to zero, the coupling inductance current i
cThen rise to load current I
0This period is primary current resetting time.
Pattern 4 (M
4Period): the output rectifying tube turn-offs, and former limit does not have electric current to flow through, i
pContinue to keep zero current condition, all load current I
0All pass through the auxiliary circuit afterflow.
Pattern 5 (M
5Period): t
5Constantly, turn-off S
4, because this moment, primary current equalled zero, so S
4Be zero-current switching (ZCS) that igbt hangover current phenomena disappears.
Pattern 6 (M
6Period): t
6Constantly, trigger S
3Conducting.Because there is leakage inductance L in transformer
Lk, primary current i
pCan not suddenly change, so S
3Be zero current turning-on.After this i
pLinearity is risen.Current i by auxiliary circuit
cThen linear decline.Commutating voltage continues to remain on V
Lct
7Moment i
pRise to maximum, i
cBe decreased to zero, continued flow tube D
cTurn-off, all load current flows through the transformer secondary.Commutating voltage V
RecRise rapidly.So far half work period of converter finishes, and half period is identical with said process in addition.
Embodiment two: specify present embodiment below in conjunction with Fig. 9.The difference of present embodiment and execution mode one is that it also comprises diode D two No. ten
s, two No. ten capacitor C
sWith two No. ten resistance R
s, two No. ten diode D
sPositive pole connect filter inductance L
0End of the same name, two No. ten diode D
sNegative pole connect capacitor C two No. ten
sAn end and two No. ten resistance R
sAn end, two No. ten capacitor C
sThe other end connect diode D No. ten
cPositive pole, two No. ten resistance R
sThe other end connect filter inductance L
0Non-same polarity.Present embodiment is the passive-clamp mode, and the passive-clamp mode can limit the commutating voltage spike and vibration is had certain damping action, energy feedback resistance R
sMore little, the clamp effect is good more.
Embodiment three: specify present embodiment below in conjunction with Figure 10.The difference of present embodiment and execution mode one is that it also comprises power tube Q three No. ten
H, three No. ten diode D
HWith three No. ten capacitor C
H, three No. ten power tube Q
HBe igbt, three No. ten power tube Q
HCollector electrode connect diode D three No. ten
HPositive pole and filter inductance L
0End of the same name, three No. ten power tube Q
HEmitter connect diode D three No. ten
HNegative pole and three No. ten capacitor C
HAn end, three No. ten capacitor C
HThe other end connect diode D No. ten
cPositive pole.When the transformer secondary output power output, leakage inductance is by clamping diode D
HWith C
HProduce resonance, give C
HCharging, commutating voltage V
RecBe clamped at C
HSteady-state value no longer produces voltage overshoot and vibration.Through of short duration time-delay, trigger clamper tube Q
HC is worked as in conducting (no-voltage is open-minded)
HResonance potential is greater than V
RecThe time, capacitance energy storage feeds back to load.Present embodiment is to adopt the converter of secondary active-clamp, is applicable to the converter that the output voltage high power is big.
Claims (3)
1, a kind of Full Bridge Zero Voltage and Zero Current Switch PWM Transducer, it comprises four power tube (S
1To S
4), eight diode (D
1To D
8), three electric capacity (C
0, C
1And C
2), transformer (T), filter inductance (L
0) and the full bridge PWM converter formed of power supply (Vin), the positive pole of power supply (Vin) connects a power tube (S
1) collector electrode, a diode (D
1) negative pole, an electric capacity (C
1) an end, No. three power tube (S
3) collector electrode and No. three diode (D
3) negative pole, a power tube (S
1) emitter connect diode (D No. one
1) positive pole, an electric capacity (C
1) the other end, No. two power tube (S
2) collector electrode, No. two diode (D
2) negative pole, No. two electric capacity (C
2) an end and an end of transformer (T) primary coil, No. three power tube (S
3) emitter connect diode (D No. three
3) positive pole, No. four power tube (S
4) collector electrode, No. four diode (D
4) negative pole and the other end of transformer (T) primary coil, the negative pole of power supply (Vin) connects power tube (S No. two
2) emitter, No. two diode (D
2) positive pole, No. two electric capacity (C
2) the other end, No. four power tube (S
4) emitter and No. four diode (D
4) positive pole, an end of transformer (T) secondary coil connects diode (D No. five
5) positive pole and No. six diode (D
6) negative pole, the other end of transformer (T) secondary coil connects diode (D No. seven
7) positive pole and No. eight diode (D
8) negative pole, No. five diode (D
5) negative pole connect diode (D No. seven
7) negative pole and filter inductance (L
0) end of the same name, filter inductance (L
0) non-same polarity connect No. zero electric capacity (C
0) an end, No. zero electric capacity (C
0) the other end connect diode (D No. eight
8) positive pole and No. six diode (D
6) positive pole, it is characterized in that it also comprises winding (L
c) and No. ten diode (D
c), winding (L
c) non-same polarity connect filter inductance (L
0) end of the same name, winding (L
c) end of the same name connect diode (D No. ten
c) negative pole, No. ten diode (D
c) positive pole connect diode (D No. eight
8) positive pole, winding (L
c) and filter inductance (L
0) coupling.
2, Full Bridge Zero Voltage and Zero Current Switch PWM Transducer according to claim 1 is characterized in that it also comprises diode (D two No. ten
s), two No. ten electric capacity (C
s) and two No. ten resistance (R
s), two No. ten diode (D
s) positive pole connect filter inductance (L
0) end of the same name, two No. ten diode (D
s) negative pole connect electric capacity (C two No. ten
s) an end and two No. ten resistance (R
s) an end, two No. ten electric capacity (C
s) the other end connect diode (D No. ten
c) positive pole, two No. ten resistance (R
s) the other end connect filter inductance (L
0) non-same polarity.
3, Full Bridge Zero Voltage and Zero Current Switch PWM Transducer according to claim 1 is characterized in that it also comprises power tube (Q three No. ten
H), three No. ten diode (D
H) and three No. ten electric capacity (C
H), three No. ten power tube (Q
H) be igbt, three No. ten power tube (Q
H) collector electrode connect diode (D three No. ten
H) positive pole and filter inductance (L
0) end of the same name, three No. ten power tube (Q
H) emitter connect diode (D three No. ten
H) negative pole and three No. ten electric capacity (C
H) an end, three No. ten electric capacity (C
H) the other end connect diode (D No. ten
c) positive pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101076565A CN1322660C (en) | 2003-10-31 | 2003-10-31 | Switch PWM convertor working at zero voltage and zero current of full bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101076565A CN1322660C (en) | 2003-10-31 | 2003-10-31 | Switch PWM convertor working at zero voltage and zero current of full bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1540851A CN1540851A (en) | 2004-10-27 |
| CN1322660C true CN1322660C (en) | 2007-06-20 |
Family
ID=34334416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101076565A Expired - Fee Related CN1322660C (en) | 2003-10-31 | 2003-10-31 | Switch PWM convertor working at zero voltage and zero current of full bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1322660C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420133C (en) * | 2006-08-09 | 2008-09-17 | 哈尔滨工业大学 | Nondestructive buffering zero-voltage soft switch full-bridged PWM DC-DC converter |
| US8199544B2 (en) | 2007-09-01 | 2012-06-12 | Brusa Elektronik Ag | Zero-voltage switching power converter |
| CN101662231B (en) * | 2009-09-09 | 2012-11-21 | 华东交通大学 | Realization method of zero-current switch of diode neutral point clamped inverting circuit |
| CN101741252A (en) * | 2010-02-11 | 2010-06-16 | 湘潭电机股份有限公司 | Direct-current power supply voltage stabilizer of accessory system for large-scale mine electric locomotive |
| CN102545618B (en) * | 2010-12-21 | 2014-03-26 | 广东易事特电源股份有限公司 | Full-bridge phase-shifting soft switching circuit |
| CN104601032B (en) * | 2014-12-30 | 2017-09-29 | 西安理工大学 | A kind of soft switch circuit and its control method for pulse converter |
| CN106655779A (en) * | 2015-10-30 | 2017-05-10 | 北京精密机电控制设备研究所 | Phase shift full bridge soft switching charging circuit |
| CN106533183B (en) * | 2016-12-23 | 2019-03-26 | 天津大学 | High efficiency isolated DC full-bridge circuit |
| CN109510501B (en) * | 2017-09-12 | 2021-07-09 | 华为技术有限公司 | Soft switching converter and wireless charging system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5278748A (en) * | 1991-07-12 | 1994-01-11 | Nec Corporation | Voltage-resonant DC-DC converter |
| US5351179A (en) * | 1993-03-05 | 1994-09-27 | Digital Equipment Corporation | Lossless active snubber for half-bridge output rectifiers |
| US5886884A (en) * | 1996-10-29 | 1999-03-23 | Korea Electrotechnology Research Institute | Passive ripple filter for zero voltage-zero current switched full-bridge DC/DC converters |
| US6452815B1 (en) * | 2001-02-22 | 2002-09-17 | Lizhi Zhu | Accelerated commutation for passive clamp isolated boost converters |
-
2003
- 2003-10-31 CN CNB2003101076565A patent/CN1322660C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5278748A (en) * | 1991-07-12 | 1994-01-11 | Nec Corporation | Voltage-resonant DC-DC converter |
| US5351179A (en) * | 1993-03-05 | 1994-09-27 | Digital Equipment Corporation | Lossless active snubber for half-bridge output rectifiers |
| US5886884A (en) * | 1996-10-29 | 1999-03-23 | Korea Electrotechnology Research Institute | Passive ripple filter for zero voltage-zero current switched full-bridge DC/DC converters |
| US6452815B1 (en) * | 2001-02-22 | 2002-09-17 | Lizhi Zhu | Accelerated commutation for passive clamp isolated boost converters |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1540851A (en) | 2004-10-27 |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Harbin Tongwei Electric Co., Ltd. Assignor: Harbin Institute of Technology Contract fulfillment period: 2008.10.10 to 2018.10.10 contract change Contract record no.: 2008230000065 Denomination of invention: Switch PWM convertor working at zero voltage and zero current of full bridge Granted publication date: 20070620 License type: Exclusive license Record date: 20081013 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.10 TO 2018.10.10; CHANGE OF CONTRACT Name of requester: HARBIN TONGWEI ELECTRICAL CO., LTD. Effective date: 20081013 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070620 Termination date: 20161031 |