CN100553093C - Active clamping stagger parallel connection voltage boosting-type converter - Google Patents
Active clamping stagger parallel connection voltage boosting-type converter Download PDFInfo
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- CN100553093C CN100553093C CNB2007101603699A CN200710160369A CN100553093C CN 100553093 C CN100553093 C CN 100553093C CN B2007101603699 A CNB2007101603699 A CN B2007101603699A CN 200710160369 A CN200710160369 A CN 200710160369A CN 100553093 C CN100553093 C CN 100553093C
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Abstract
Active clamping stagger parallel connection voltage boosting-type converter disclosed by the invention comprises two power switch pipes, two fly-wheel diodes, an auxiliary power switching tube, a clamping capacitance, an output capacitance and two coupling inductances, two coupling inductances have three windings respectively.The present invention utilizes the tertiary winding of two coupling inductances to realize the high-gain output of converter, absorption that the series circuit that utilizes auxiliary switch and clamping capacitance to form can't harm and the leakage inductance energy that has shifted two coupling inductances, and realized first, the no-voltage of second power switch pipe is open-minded, utilize first, the shunt capacitance of second power switch pipe has realized first, the no-voltage of second power switch pipe is turn-offed, utilize first, the gate pole arrangement of second power switch pipe and auxiliary switch, the no-voltage that has realized auxiliary switch is opened with no-voltage and is turn-offed, add ons is few, simple in structure, noenergy losser in the circuit can improve the output gain and the circuit efficiency of converter.
Description
Technical field
The present invention relates to DC-DC converter, is active clamping stagger parallel connection voltage boosting-type converter specifically.
Background technology
Conventional booster type (Boost) crisscross parallel DC-DC converter, comprise two inductance, two fly-wheel diodes, two power switch pipes, the drain electrode of first power switch pipe links to each other with the anode of first diode and an end of first inductance, the drain electrode of second power switch pipe links to each other with the anode of second diode and an end of second inductance, and the other end of first inductance links to each other with the other end of second inductance.This boost interleaved parallel DC-DC converter output voltage gain is less, and the voltage stress of power switch pipe is bigger, and power switch pipe is hard switching work, and switching loss is bigger, and the reverse recovery current of fly-wheel diode is bigger, and reverse recovery loss is bigger.In recent years, studied some soft switch circuits in succession, mainly contained two kinds: a kind of is the soft switch of realizing power switch pipe by additional active power switch and devices such as passive inductance, electric capacity; Another kind is a soft switch of realizing power switch pipe by devices such as additional diode and passive inductance, electric capacity.Though the soft switch that can realize power switch pipe of these two kinds of methods, the additional circuit complexity, and can not reduce the voltage stress of power switch pipe, can not realize the high-gain function of converter.
Summary of the invention
It is few to the purpose of this invention is to provide power switch pipe quantity, simple in structure, and cost is low, and the active clamping stagger parallel connection voltage boosting-type converter with minimum clamp switch pipe of noenergy loss.
Technical solution of the present invention is, active clamping stagger parallel connection voltage boosting-type converter comprises: two power switch pipes, two fly-wheel diodes, two coupling inductances, an auxiliary power switching tube, a clamping capacitance and an output capacitance, first coupling inductance has three windings, second coupling inductance has three windings, the source ground of first power switch pipe, the drain electrode of first power switch pipe links to each other with an end of first winding of first coupling inductance, the other end of first winding of first coupling inductance links to each other with an end of second winding of first coupling inductance and the positive pole of DC power supply, the source electrode of second power switch pipe links to each other with an end of first winding of second coupling inductance, the other end ground connection of first winding of second coupling inductance, the drain electrode of second power switch pipe links to each other with an end of second winding of second coupling inductance and the positive pole of DC power supply, the other end of second winding of first coupling inductance links to each other with an end of the tertiary winding of second coupling inductance, the other end of the tertiary winding of second coupling inductance links to each other with the anode of first fly-wheel diode, the other end of second winding of second coupling inductance links to each other with an end of the tertiary winding of first coupling inductance, the other end of the tertiary winding of first coupling inductance links to each other with the anode of second fly-wheel diode, between the drain electrode of the source electrode of second power switch pipe and first power switch pipe, insert the series circuit of forming by auxiliary power switching tube and clamping capacitance, and the drain electrode of auxiliary switch links to each other with the source electrode of second power switch pipe, the negative electrode of first fly-wheel diode links to each other with the negative electrode of second fly-wheel diode and the anode of output capacitance, and the negative terminal of output capacitance links to each other with ground.
During work, utilize the tertiary winding of two coupling inductances to realize the high-gain output of circuit; Because first power switch pipe leaks, shunt capacitance, second power switch pipe between source electrode leak, the existence of the shunt capacitance between source electrode, realized that the no-voltage of first power switch pipe, second power switch pipe is turn-offed; Clamping capacitance is collected the leakage inductance energy of first coupling inductance, second coupling inductance, and finally transfers to input, has realized the harmless absorption of clamp circuit.In whole switch periods,, can make first, second power switch pipe, auxiliary switch realization no-voltage open with no-voltage and turn-off by controlling the gate pulse of first power switch pipe, second power switch pipe, auxiliary switch.
Beneficial effect of the present invention is:
Active clamping stagger parallel connection voltage boosting-type converter of the present invention has minimum clamp switch pipe, utilize the tertiary winding of two coupling inductances to realize the high-gain output of converter, absorption that the series circuit that utilizes auxiliary switch and clamping capacitance to form can't harm and the leakage inductance energy that has shifted two coupling inductances, and realized first, the no-voltage of second power switch pipe is open-minded, utilize first, the shunt capacitance of second power switch pipe has realized first, the no-voltage of second power switch pipe is turn-offed, utilize first, the gate pole arrangement of second power switch pipe and auxiliary switch, the no-voltage that has realized auxiliary switch is opened with no-voltage and is turn-offed, need not extra inductance element, thereby add ons is few, simple in structure, cost is low, need not extra testing circuit, noenergy losser in the circuit can improve the output gain and the circuit efficiency of converter, and in the commutation course, no-voltage overshoot when power switch pipe turn-offs, no current overshoot when fly-wheel diode turn-offs.
Description of drawings
Fig. 1 is the circuit diagram of active clamping stagger parallel connection voltage boosting-type converter.
Embodiment
Referring to Fig. 1, active clamping stagger parallel connection voltage boosting-type converter of the present invention comprises two power switch tube S 1, S2, two sustained diode o1, Do2, an auxiliary power switching tube Sc, a clamping capacitance Cc, an output capacitance Co and two coupling inductances, first coupling inductance has three winding L 1a, L1b, L1c, second coupling inductance has three winding L 2a, L2b, L2c, the drain electrode of first power switch tube S 1 links to each other with the end of the first winding L 1a of first coupling inductance, the source ground of first power switch tube S 1, the other end of the first winding L 1a of first coupling inductance links to each other with the end of the second winding L 1b of first coupling inductance and the anode of input, the source electrode of second power switch tube S 2 links to each other with the end of the first winding L 2a of second coupling inductance, the drain electrode of second power switch tube S 2 links to each other with the end of the second winding L 2b of second coupling inductance and the anode of input, the other end ground connection of the first winding L 2a of second coupling inductance, the other end of the second winding L 1b of first coupling inductance links to each other with the end of the tertiary winding L2c of second coupling inductance, the other end of the tertiary winding L2c of second coupling inductance links to each other with the anode of the first sustained diode o1, the other end of the second winding L 2b of second coupling inductance links to each other with the end of the tertiary winding L1c of first coupling inductance, the other end of the tertiary winding L1c of first coupling inductance links to each other with the anode of the second sustained diode o2, between the drain electrode of the source electrode of second power switch tube S 2 and first power switch tube S 1, seal in the series circuit of forming by auxiliary power switching tube Sc and clamping capacitance Cc, and the drain electrode of auxiliary switch Sc links to each other with the source electrode of second power switch tube S 2, the source electrode of the first auxiliary switch Sc links to each other with the end of clamping capacitance Cc, and the other end of clamping capacitance Cc links to each other with the drain electrode of first power switch tube S 1.The negative electrode of the first sustained diode o1 links to each other with the negative electrode of the second sustained diode o2 and the anode of output capacitance Co, and the negative terminal of output capacitance Co links to each other with ground.
There are four kinds of change of current situations in active clamping stagger parallel connection voltage boosting-type converter, the change of current between the change of current between promptly 1 shutoff of first power switch tube S and auxiliary switch Sc open and auxiliary switch Sc shutoff and the first switching tube S1 open; The change of current between the change of current between 2 shutoffs of second power switch tube S and auxiliary switch Sc open and auxiliary switch Sc shutoff and second power switch tube S 2 are opened.Because the symmetry of circuit, only the commutation course with first power switch tube S 1 is that example is analyzed as follows:
First power switch tube S 1 is turn-offed the commutation course that auxiliary switch Sc opens:
Before the change of current, circuit is in first power switch tube S 1, second power switch tube S 2 is open-minded, the steady-working state that the first sustained diode o1, the second sustained diode o2 turn-off.When first power switch tube S 1 was turn-offed, because the existence of shunt capacitance on first power switch tube S 1, the voltage of first power switch tube S 1 was started from scratch and is risen so that certain slope is linear, and promptly first power switch tube S 1 has realized the no-voltage shutoff.When the voltage of first power switch tube S 1 rises to certain value, diode is open-minded in the body of auxiliary switch Sc, the voltage of auxiliary switch Sc is zero, the leakage inductance energy of first coupling inductance is transferred on the clamping capacitance Cc, after diode is opened in the body of auxiliary switch Sc, provide the gate signal of auxiliary switch Sc, realized that the no-voltage of auxiliary switch Sc is open-minded.In this process, the first sustained diode o1 conducting, the coupling inductance energy begins to shift to the output of circuit.Afterwards, circuit enters the first power tube S1 and turn-offs, and auxiliary switch Sc is open-minded, the steady operational status that the first sustained diode o1 opens.
Auxiliary switch Sc turn-offs, the commutation course that first power switch tube S 1 is opened:
Before auxiliary switch Sc turn-offs, the leakage inductance of first coupling inductance and clamping capacitance Cc resonance, the first sustained diode o1 is in the stable operation operating state of conducting.When auxiliary switch Sc turn-offed, because the existence of shunt capacitance on first power switch tube S 1, auxiliary switch Sc voltage was started from scratch and is risen so that certain slope is linear, and promptly auxiliary switch Sc has realized that no-voltage is open-minded.Shunt capacitance resonance on the leakage inductance of first coupling inductance and first power switch tube S 1, the shunt capacitance energy shifts to the leakage inductance of first coupling inductance on first power switch tube S 1, the voltage of first power switch tube S 1 begins to descend with certain slope from certain value, when the voltage of first power switch tube S 1 drops to zero, diode is open-minded in the body of first power switch tube S 1, after diode is opened in the body of first power switch tube S 1, provide first power switch tube S, 1 gate signal, realized that the no-voltage of first power switch tube S 1 is open-minded.The first sustained diode o1 electric current begins to descend with certain slope from certain value, and when the first sustained diode o1 electric current dropped to zero, the first sustained diode o1 turn-offed.Like this, the reverse recovery current of the first sustained diode o1 is zero, has reduced the reverse recovery loss that the first sustained diode o1 brings greatly.Afterwards, circuit enters 1 conducting of first power switch tube S, the steady operational status that the first sustained diode o1 turn-offs.
Claims (1)
1. active clamping stagger parallel connection voltage boosting-type converter, comprise two power switch pipe (S1, S2), two fly-wheel diode (Do1, Do2) and two coupling inductances, it is characterized in that also comprising an auxiliary power switching tube (Sc), a clamping capacitance (Cc) and an output capacitance (Co), first coupling inductance has three winding (L1a, L1b, L1c), second coupling inductance has three winding (L2a, L2b, L2c), the source ground of first power switch pipe (S1), the drain electrode of first power switch pipe (S1) links to each other with an end of first winding (L1a) of first coupling inductance, the other end of first winding (L1a) of first coupling inductance links to each other with an end of second winding (L1b) of first coupling inductance and the positive pole of DC power supply, the source electrode of second power switch pipe (S2) links to each other with an end of first winding (L2a) of second coupling inductance, the other end ground connection of first winding (L2a) of second coupling inductance, the drain electrode of second power switch pipe (S2) links to each other with an end of second winding (L2b) of second coupling inductance and the positive pole of DC power supply, the other end of second winding (L1b) of first coupling inductance links to each other with an end of the tertiary winding (L2c) of second coupling inductance, the other end of the tertiary winding of second coupling inductance (L2c) links to each other with the anode of first fly-wheel diode (Do1), the other end of second winding (L2b) of second coupling inductance links to each other with an end of the tertiary winding (L1c) of first coupling inductance, the other end of the tertiary winding of first coupling inductance (L1c) links to each other with the anode of second fly-wheel diode (Do2), between the drain electrode of the source electrode of second power switch pipe (S2) and first power switch pipe (S1), insert the series circuit of forming by auxiliary power switching tube (Sc) and clamping capacitance (Cc), and the drain electrode of auxiliary power switching tube (Sc) links to each other with the source electrode of second power switch pipe (S2), the negative electrode of first fly-wheel diode (Do1) links to each other with the negative electrode of second fly-wheel diode (Do2) and the anode of output capacitance (Co), and the negative terminal of output capacitance (Co) links to each other with ground.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101603699A CN100553093C (en) | 2007-12-18 | 2007-12-18 | Active clamping stagger parallel connection voltage boosting-type converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007101603699A CN100553093C (en) | 2007-12-18 | 2007-12-18 | Active clamping stagger parallel connection voltage boosting-type converter |
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| CN100553093C true CN100553093C (en) | 2009-10-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11349404B2 (en) | 2019-12-11 | 2022-05-31 | Delta Electronics, Inc. | Power conversion circuit and power conversion apparatus with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101453168B (en) * | 2008-09-05 | 2011-05-18 | 浙江大学 | Active clamping stagger parallel connection DC/DC converter having switch capacitor |
| CN101505095B (en) * | 2009-03-12 | 2010-09-29 | 浙江大学 | Quasi-resonance three-level soft switch boosting type converter with expanded period |
| CN112234666B (en) * | 2020-09-04 | 2022-06-17 | 宁波唯嘉电子科技有限公司 | Lithium battery charging and discharging circuit of tool lamp |
| CN116054619B (en) * | 2023-04-03 | 2023-06-27 | 安徽微伏特电源科技有限公司 | Coupling staggered parallel active clamp flyback inverter topology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11349404B2 (en) | 2019-12-11 | 2022-05-31 | Delta Electronics, Inc. | Power conversion circuit and power conversion apparatus with same |
| US11641164B2 (en) | 2019-12-11 | 2023-05-02 | Delta Electronics, Inc. | Power conversion circuit and power conversion apparatus with same |
| US11894777B2 (en) | 2019-12-11 | 2024-02-06 | Delta Electronics, Inc. | Power conversion circuit and power conversion apparatus with same |
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| CN101252320A (en) | 2008-08-27 |
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