CN102035375B - Switching boost type direct current converter - Google Patents
Switching boost type direct current converter Download PDFInfo
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- CN102035375B CN102035375B CN 201010576669 CN201010576669A CN102035375B CN 102035375 B CN102035375 B CN 102035375B CN 201010576669 CN201010576669 CN 201010576669 CN 201010576669 A CN201010576669 A CN 201010576669A CN 102035375 B CN102035375 B CN 102035375B
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- diode
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Abstract
The invention discloses a switching boost type direct current converter, which is formed by making improvement on the basis of a topological structure of the conventional converter circuit and modulates the output waveform of a power switching device by using a circuit consisting of a certain number of capacitors, inductors and diodes. After a direct current voltage source Ed is converted by the topological structure, voltage Uce between a collector and an emitter of the power switching device Tb when the power switching device Tb is turned off is effectively suppressed (the voltage is not highly increased) while output voltage of the power switching device is improved, so that electromagnetic interference is effectively suppressed; meanwhile, an overlap angle of the voltage Uce between the collector and the emitter and current ic is greatly reduced, so that power consumption of the power switching device Tb is effectively reduced when the power switching device is turned off and turned on.
Description
Technical field
The present invention relates to a kind of power transformation boost circuit structure, relate in particular to a kind of topological circuit structure that can effectively reduce switching loss, inhibition electromagnetic interference, realize the soft boost switching type DC converter that device for power switching zero current turning-on and no-voltage are turn-offed.
Background technology
In power-supply device and dc voltage conversion, often need a kind of lower dc voltage conversion is the another kind of high direct voltage that compares.As shown in Figure 1, be existing a kind of step-up DC-DC converter topology structure commonly used.This topological structure is simple, and is with low cost, but also has intrinsic defective, shows as:
The voltage and current waveform of traditional DC converter as shown in Figure 4, line style one is device for power switching T among the figure
bVoltage waveform U
Ce, line style two is device for power switching T
bCurrent waveform i
c, can find out voltage waveform U
CeRising edge height is arranged and sharp-pointed burr, i.e. device for power switching T
bPeak voltage during shutoff.As shown in Figure 8, be converter shown in Figure 4 waveform enlarged diagram when turn-offing, can be more clearly visible device for power switching T
bThe very HI high impact of voltage waveform during shutoff is prone to form electromagnetic interference; And it and current waveform i
cThe overlap angle that an about 200nS is arranged, this has just constituted the power loss when switch turn-offs; As shown in Figure 6, be the waveform enlarged diagram of converter shown in Figure 4 when opening, voltage waveform U when opening from can clearly be seen that shown in the figure
CeIt is very fast to descend, and current waveform i
cAlso fast rising, both overlap angle very low (about 50nS, the calibration of Fig. 6 is 200nS/div); Though the device for power switching turn-on consumption that causes thus is little; But also very important, how to seek the lower power consumption of opening, be the major issue that industry technical staff attempts to break through.
Summary of the invention
In view of the defective that above-mentioned prior art exists, the object of the invention is intended to propose a kind of boost switching type DC converter, opens and turn-off two kinds of peak voltages under the variable condition in the hope of reducing converter, and electromagnetic interference that causes thus and power loss.
Above-mentioned purpose of the present invention will be achieved through following technical scheme:
A kind of boost switching type DC converter, the input side of said converter is DC power supply E
d, the positive terminal of said DC power supply and inductance L
bAn end link to each other and its negative pole end and device for power switching T
bEmitter, diode D
bAnode, capacitor C
oNegative pole and the end of load R be connected to contact A mutually, said inductance L
bThe other end and diode D
eAnode, diode D
bNegative electrode and device for power switching T
bCollector electrode be connected to contact B mutually, said diode D
eNegative electrode and capacitor C
oPositive pole and the other end of load R be connected to contact C mutually, it is characterized in that: said converter diode D relatively between contact BC
eBe connected with capacitor C
rAnd diode D
dSeries circuit, and in diode D
dAnode contact D and contact B between capacitor C relatively
rBe connected with diode D
a, inductance L
rWith diode D
cSeries circuit, and diode D
aCathode contact E and contact A between be connected with capacitor C
s, said capacitor C
sAn end link to each other with contact E, the other end is corresponding with contact A to link to each other.
The application of the topological circuit structure of the soft boost switching type of the present invention DC converter, its outstanding effect is:
Direct voltage source E
dAfter topological structure conversion of the present invention, when its output voltage is improved, device for power switching T
bVoltage U during shutoff between its collector electrode and emitter
CeBe effectively suppressed (can not dash very highly), thereby effectively suppressed electromagnetic interference; Greatly dwindled simultaneously the voltage U between collector electrode and emitter
CeWith current i
cOverlap angle, thereby effectively reduce device for power switching T
bPower loss when turn-offing and opening.
Description of drawings
Fig. 1 is the circuit topological structure of traditional step-up DC-DC converter;
Fig. 2 is the circuit topological structure of step-up DC of the present invention-DC converter;
Fig. 3 a～Fig. 3 f is the operation mode sketch map of step-up DC of the present invention-DC converter;
Fig. 4 is the voltage current waveform sketch map of traditional step-up DC-DC converter;
Fig. 5 is the voltage current waveform sketch map of step-up DC of the present invention-DC converter;
The local enlarged diagram of voltage current waveform shown in Figure 4 when Fig. 6 opens for converter;
The local enlarged diagram of voltage current waveform shown in Figure 5 when Fig. 7 opens for converter;
The local enlarged diagram of voltage current waveform shown in Figure 4 when Fig. 8 turn-offs for converter;
The local enlarged diagram of voltage current waveform shown in Figure 5 when Fig. 9 turn-offs for converter.
Among above-mentioned Fig. 4 to Fig. 9, line style one is device for power switching T
bVoltage waveform U
Ce, line style two is device for power switching T
bCurrent waveform i
c
Embodiment
Following constipation closes the embodiment accompanying drawing, and specific embodiments of the invention is done further to detail, so that technical scheme of the present invention is easier to understand, grasp.
Circuit topological structure is introduced
The preferred embodiment of boost switching type commutator transformer of the present invention, its topological structure sketch map is as shown in Figure 2:
A kind of boost switching type DC converter, the input side of said converter is DC power supply E
d, the positive terminal of said DC power supply and inductance L
bAn end link to each other and its negative pole end and device for power switching T
bEmitter, diode D
bAnode, capacitor C
oNegative pole and the end of load R be connected to contact A mutually, said inductance L
bThe other end and diode D
eAnode, diode D
bNegative electrode and device for power switching T
bCollector electrode be connected to contact B mutually, said diode D
eNegative electrode and capacitor C
oPositive pole and the other end of load R be connected to contact C mutually, it is characterized in that: said converter diode D relatively between contact BC
eBe connected with capacitor C
rAnd diode D
dSeries circuit, and in diode D
dAnode contact D and contact B between capacitor C relatively
rBe connected with diode D
a, inductance L
rWith diode D
cSeries circuit, and diode D
aCathode contact E and contact A between be connected with capacitor C
s, said capacitor C
sAn end link to each other with contact E, the other end is corresponding with contact A to link to each other.
The course of work of following analytic transformation device, wherein device for power switching T
bRepresent with switch, set forth (corresponding diagram 3a to Fig. 3 f respectively), make its principle be easier to understand with the process of its six mode:
Mode a: suppose that circuit topological structure shown in Figure 2 is initial condition (switch opens shown in Fig. 3 a), i.e. device for power switching T
bBe off state, and capacitor C
sOn have "+", the following electric charge of "-", load current i
RFrom DC power supply E
d"+" end through inductance L
b, diode D
e, load R gets back to DC power supply E
d"-" end.
Mode b shown in Fig. 3 b: as device for power switching T
bWhen opening, capacitor C
sThrough inductance L
r, diode D
c, capacitor C
r, device for power switching T
bGive capacitor C
rCharging (is C
s, L
r, C
rBetween resonance takes place), because inductance L
rExistence, the increase of can only starting from scratch of this charging current, inductance L
rThe back-emf direction be a left side "+" right "-".In addition, because inductance L
bExistence, so device for power switching T
bThe electric current increase of still starting from scratch generally, thereby realize zero current turning-on (ZCS).Capacitor C
oContinue power supply for load R.
Mode c shown in Fig. 3 c: along with capacitor C
sDischarge, capacitor C
sOn electric charge discharge and to finish.This moment inductance L
rBack-emf change direction (right "+" left side "-"), inductance L
rWith capacitor C
rContinue resonance, inductance L
rGive capacitor C
rContinue charging, and electric current reduces slowly until being zero.Capacitor C
oContinue power supply for load R.
Mode d shown in Fig. 3 d: work as L
rDischarging current when reducing to zero, inductance L
rWith capacitor C
rResonance stop DC power supply E
dContinuation is through device for power switching T
bTo inductance L
bCharging, capacitor C
oContinue as load R power supply.
Mode e shown in Fig. 3 e: as device for power switching T
bDuring shutoff, inductance L
bBack-emf change direction, a left side "-" right "+", inductance L
bWith DC power supply E
dThe series connection back is through diode D
aTo capacitor C
sCharging, capacitor C
oContinue as load R power supply.
Mode f shown in Fig. 3 f: work as capacitor C
sVoltage and capacitor C
rThe voltage sum greater than capacitor C
oTerminal voltage the time, DC power supply E
d, inductance L
b, capacitor C
rThe series connection back is to capacitor C
oWith load R discharge, until capacitor C
rTerminal voltage be zero; Work as capacitor C
rTerminal voltage when being zero, diode D
eForward is open-minded, DC power supply E
d, inductance L
bSeries connection is after D
eContinuation is to capacitor C
oWith load R discharge, the state of converter has been got back to mode a.
Analyze and comparison
Be illustrated in figure 4 as the voltage current waveform of traditional DC-DC converter, line style one is T among the figure
bU
Ce, line style two is T
bI
c, its defective is introduced in background technology in detail, will not give unnecessary details (like Fig. 6 and shown in Figure 8) now.
Be illustrated in figure 5 as the voltage current waveform of DC-DC converter of the present invention, line style one is device for power switching T among the figure
bTransmitter and collector voltage waveform U
Ce, line style two is device for power switching T
bCurrent waveform i
c, can find out that the rising edge (spike burr) of voltage waveform (line style one) obviously is inhibited.As shown in Figure 9 is this voltage current waveform enlarged diagram when turn-offing, and can be clear that more that voltage waveform during shutoff (line style one) is to rise inchmeal, and the electromagnetic interference that it causes is very little; The overlap angle of it and current waveform (line style two) is very low, the device for power switching T that causes thus
bTurn-off power loss is very little.
As shown in Figure 7; Amplified the part of voltage current waveform when it was opened for DC-DC converter of the present invention, can clearly be seen that, voltage waveform when opening (line style one) descends also very fast; Current waveform (line style two) then rises slowly than Fig. 6; Its overlap angle narrower (about 25nS, the time scaling of Fig. 7 are 100nS/div) more shown in Figure 6, the device for power switching turn-on consumption that causes thus is then littler.
Thus, direct voltage source E
dAfter topological structure conversion of the present invention, when its output voltage is improved, device for power switching T
bVoltage U during shutoff between its collector electrode and emitter
CeBe effectively suppressed (can not dash very highly), thereby effectively suppressed electromagnetic interference; Greatly dwindled simultaneously the voltage U between collector electrode and emitter
CeWith current i
cOverlap angle, thereby effectively reduce device for power switching T
bPower loss when turn-offing and opening.
To sum up compare based on circuit topological structure, principle Analysis and the effect of embodiment; Its purpose is intended to let those skilled in the art can understand content of the present invention and implements according to this; Can not limit protection scope of the present invention with this; So all based on the invention described above circuit topological structure and spirit thereof, through simple reconfiguration or the formed technical scheme of equivalence replacement, all should be regarded as being covered by within protection scope of the present invention.
Claims (1)
1. boost switching type DC converter, the input side of said converter is DC power supply E
d, the positive terminal of said DC power supply and inductance L
bAn end link to each other and its negative pole end and device for power switching T
bEmitter, diode D
bAnode, capacitor C
oNegative pole and the end of load R be connected to contact A mutually, said inductance L
bThe other end and diode D
eAnode, diode D
bNegative electrode and device for power switching T
bCollector electrode be connected to contact B mutually, said diode D
eNegative electrode and capacitor C
oPositive pole and the other end of load R be connected to contact C mutually, it is characterized in that: said converter diode D relatively between contact BC
eBe connected with capacitor C
rAnd diode D
dSeries circuit, and in diode D
dAnode contact D and contact B between capacitor C relatively
rBe connected with diode D
a, inductance L
rWith diode D
cSeries circuit, and diode D
aCathode contact E and contact A between be connected with capacitor C
s, said capacitor C
sAn end link to each other with contact E, the other end is corresponding with contact A to link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010576669 CN102035375B (en) | 2010-12-07 | 2010-12-07 | Switching boost type direct current converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010576669 CN102035375B (en) | 2010-12-07 | 2010-12-07 | Switching boost type direct current converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102035375A CN102035375A (en) | 2011-04-27 |
| CN102035375B true CN102035375B (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010576669 Expired - Fee Related CN102035375B (en) | 2010-12-07 | 2010-12-07 | Switching boost type direct current converter |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633844B (en) * | 2013-11-29 | 2016-06-22 | 华南理工大学 | A kind of magnetic coupling type high-gain DC/DC changer |
| CN103633840B (en) * | 2013-11-29 | 2016-06-22 | 华南理工大学 | A kind of Single switch high gain boost DC/DC changer |
| ES2608255B1 (en) * | 2015-10-06 | 2017-11-07 | Universidad De Huelva | DC-DC converter with bipolar output and use of it to connect a distributed generation system to a Bipolar DC network |
| CN109217660B (en) * | 2017-06-30 | 2021-04-27 | 株洲中车时代电气股份有限公司 | DC/DC boost converter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2602543Y (en) * | 2002-11-08 | 2004-02-04 | 钱龙圣 | Soft switch circuit without depletion absorption |
| CN2652035Y (en) * | 2003-08-29 | 2004-10-27 | 刘文辉 | Step-up inverter of flexible switch |
| CN1599219A (en) * | 2004-08-20 | 2005-03-23 | 艾默生网络能源有限公司 | Conversion soft switch circuit |
| TWI238590B (en) * | 2004-06-10 | 2005-08-21 | Wai Zheng Zhong | High-efficiency DC/DC converter with high voltage gain |
| TW201021383A (en) * | 2008-11-18 | 2010-06-01 | Univ Hungkuang | Efficient insulated DC power conversion device |
-
2010
- 2010-12-07 CN CN 201010576669 patent/CN102035375B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2602543Y (en) * | 2002-11-08 | 2004-02-04 | 钱龙圣 | Soft switch circuit without depletion absorption |
| CN2652035Y (en) * | 2003-08-29 | 2004-10-27 | 刘文辉 | Step-up inverter of flexible switch |
| TWI238590B (en) * | 2004-06-10 | 2005-08-21 | Wai Zheng Zhong | High-efficiency DC/DC converter with high voltage gain |
| CN1599219A (en) * | 2004-08-20 | 2005-03-23 | 艾默生网络能源有限公司 | Conversion soft switch circuit |
| TW201021383A (en) * | 2008-11-18 | 2010-06-01 | Univ Hungkuang | Efficient insulated DC power conversion device |
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| Publication number | Publication date |
|---|---|
| CN102035375A (en) | 2011-04-27 |
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| C14 | Grant of patent or utility model | ||
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| ASS | Succession or assignment of patent right |
Owner name: CHANGZHOU JUTE INDUSTRIAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: JIANGSU STAR INDUSTRY TECHNOLOGY CO., LTD. Effective date: 20150527 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150527 Address after: 213000 Yingbin Road 58-8, bell tower, Jiangsu, Changzhou Patentee after: Jiangsu Star Industry Technology Co., Ltd. Address before: 213000, No. 29, Xinbei District, Jiangsu, Hengshan Road, Changzhou Patentee before: Jiangsu Star Industry Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20171207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |