CN201383753Y - Pressure raising type staggered parallel connection convertor realizing inactive clamping through coupling inductance added with switching capacity - Google Patents
Pressure raising type staggered parallel connection convertor realizing inactive clamping through coupling inductance added with switching capacity Download PDFInfo
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- CN201383753Y CN201383753Y CN200920116099U CN200920116099U CN201383753Y CN 201383753 Y CN201383753 Y CN 201383753Y CN 200920116099 U CN200920116099 U CN 200920116099U CN 200920116099 U CN200920116099 U CN 200920116099U CN 201383753 Y CN201383753 Y CN 201383753Y
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Abstract
The utility model discloses a pressure raising type staggered parallel connection convertor realizing inactive clamping through coupling inductance added with switching capacity, which comprises two power switch pipes, two clamping diodes, two clamping capacitors, two fly-wheel diodes, two switch capacitors, two output diodes, one output capacitor and two coupling inductances, wherein the two coupling inductances are respectively provided with three windings, the pressure raising type staggered parallel connection convertor utilizes leakage inductance of the two coupling inductances to realize opening zero current of the power switch pipes, and utilizes an inactive clamping circuit composed of the clamping diodes and the clamping capacitors to realize soft closing of the power switch pipes and the nondestructive transfer of leakage inductance energy, the clamping diodes are not connected on a power loop in series, which can reduce conducting loss, a second winding and a third winding of the two coupling inductances are utilized to realize high-gain output of the convertor, the two switch capacitances are utilized to further improve the voltage gain of the convertor and lower the voltage stress of power components, additional power switches and inductance elements are not needed, none energy consumption elements are arranged in the circuit, and the structure is simple.
Description
Technical field
The utility model relates to a kind of DC-DC converter.Be that coupling inductance adds switch electric capacity realization passive clamping voltage boosting type interleaved parallel 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.In order to improve the voltage gain of converter, a kind of mode is to adopt tandem tap capacitor cell mode, and the high-gain conversion could be realized in this method a plurality of switching capacities unit of need connecting, and circuit is complexity; Another kind of mode is to adopt three winding coupled inductance modes, and the output diode voltage stress under this mode is higher, has influenced the efficient of converter.
Summary of the invention
The purpose of this utility model provides the output voltage gain height, and the input current ripple is little, and output current ripple is little, and power switch pipe quantity is few, and is simple in structure, and the coupling inductance of noenergy loss adds switch electric capacity realization passive clamping voltage boosting type interleaved parallel converter.
Technical solution of the present utility model is: coupling inductance adds switch electric capacity and realizes the passive clamping voltage boosting type interleaved parallel converter, comprise two power switch pipes, two clamping diodes, two clamping capacitances, two fly-wheel diodes, two switching capacities, two output diodes, an output capacitance and two coupling inductances, first coupling inductance has three windings, second coupling inductance has three windings, one end of first winding of first coupling inductance links to each other with an end of first winding of second coupling inductance and the anode of power supply, the other end of first winding of first coupling inductance links to each other with the anode of the source electrode of first power switch pipe and first clamping diode and an end of first switching capacity, the negative electrode of first clamping diode links to each other with an end of first clamping capacitance and the anode of first fly-wheel diode, the other end of first switching capacity links to each other with an end of second winding of first coupling inductance, 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 negative electrode of first fly-wheel diode and the anode of first output diode, the other end of first winding of second coupling inductance links to each other with the anode of the source electrode of second power switch pipe and second clamping diode and an end of second switch electric capacity, the negative electrode of second clamping diode links to each other with an end of second clamping capacitance and the anode of second fly-wheel diode, the other end of second switch electric capacity links to each other with an end of second winding of second coupling inductance, 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 negative electrode of second fly-wheel diode and the anode of second output diode, the negative electrode of first output diode links to each other with the negative electrode of second output diode and an end of first output capacitance, the drain electrode of the drain electrode of first power switch pipe and second power switch pipe links to each other with the other end of the negative terminal of power supply and first output capacitance, the other end of first clamping capacitance and second clamping capacitance links to each other with the drain electrode of first power switch pipe with second power switch pipe jointly, perhaps the other end of first clamping capacitance and second clamping capacitance links to each other with the contact of first winding of first winding of first coupling inductance and second coupling inductance jointly, and perhaps the common negative electrode with first fly-wheel diode and second fly-wheel diode of the other end of first clamping capacitance and second clamping capacitance connects altogether.The tertiary winding of second winding of first winding of above-mentioned first coupling inductance and the link of power positive end and first coupling inductance and the link of first switching capacity and first coupling inductance and the link of the second output diode anode are the end of the same name of first coupling inductance; The tertiary winding of second winding of first winding of second coupling inductance and the link of power positive end and second coupling inductance and the link of second switch electric capacity and second coupling inductance and the link of the first output diode anode are the end of the same name of first coupling inductance.
During work, utilize the leakage inductance of two coupling inductances to realize the soft shutoff of zero current turning-on and first, second two fly-wheel diodes of first power switch pipe, second power switch pipe; When first power switch pipe and second power switch pipe turn-off, because the existence of first clamping diode, first clamping capacitance and second clamping diode, second clamping capacitance has realized that the soft clamping of first power switch pipe and second power switch pipe turn-offs.Second, third that utilizes first coupling inductance is around realizing the high-gain output of converter with second, third winding of second coupling inductance, utilize first switching capacity, second switch electric capacity further to improve the voltage gain of converter and the voltage stress of reduction power device, simultaneously, each switch periods first clamping capacitance, second clamping capacitance are collected the leakage inductance energy of first coupling inductance, second coupling inductance, and finally transfer to load, realized the harmless operation of passive clamp circuit.
Coupling inductance of the present utility model adds switch electric capacity and realizes the passive-clamp high gain boost interleaved parallel converter, utilized the leakage inductance of two coupling inductances to realize the zero current turning-on of power switch pipe, the passive clamp circuit that utilizes clamping diode and clamping capacitance to form has been realized the soft shutoff of power switch pipe and the harmless transfer of leakage inductance energy, clamping diode is not connected on the loop of power circuit, can reduce conduction loss, utilize second of two coupling inductances, the tertiary winding has been realized the high-gain output of converter, utilize two switching capacities further to improve the voltage gain and the voltage stress that has reduced power device of converter, need not extra power switch and inductance element, attachment element is few, simple in structure, control is convenient, noenergy losser in the circuit can improve the efficient of boost interleaved parallel circuit, and in the commutation course, no-voltage overshoot when power switch pipe turn-offs, no current overshoot when fly-wheel diode is opened.
Description of drawings
Fig. 1 is that a kind of coupling inductance adds the circuit diagram that switch electric capacity is realized the passive clamping voltage boosting type interleaved parallel converter;
Fig. 2 is that second kind of coupling inductance adds the circuit diagram that switch electric capacity is realized the passive clamping voltage boosting type interleaved parallel converter;
Fig. 3 is that the third coupling inductance adds the circuit diagram that switch electric capacity is realized the passive clamping voltage boosting type interleaved parallel converter;
Embodiment
Referring to Fig. 1, coupling inductance of the present utility model adds switch electric capacity and realizes the passive clamping voltage boosting type interleaved parallel converter, comprise two power switch tube S 1, S2, two clamping diode Dc1, Dc2, two clamping capacitance Cc1, Cc2, two sustained diode r1, Dr2, two switching capacity Cd1, Cd2, two output diode Do1, Do2, 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 end of the first winding L 1a of first coupling inductance links to each other with the end of the first winding L 2a of second coupling inductance and the anode of power supply Vin, the other end of the first winding L 1a of first coupling inductance links to each other with the anode of the source electrode of first power switch tube S 1 and the first clamping diode Dc1 and the end of the first switching capacity Cd1, the negative electrode of the first clamping diode Dc1 links to each other with the end of the first clamping capacitance Cc1 and the anode of first fly-wheel diode (Dr1), the other end of the first switching capacity Cd1 links to each other with the end of the second winding L 1b of first 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 negative electrode of the first sustained diode r1 and the first output diode Do1, the other end of the first winding L 2a of second coupling inductance links to each other with the anode of the source electrode of second power switch tube S 2 and the second clamping diode Dc2 and the end of second switch capacitor C d2, the negative electrode of the second clamping diode Dc2 links to each other with the end of the second clamping capacitance Cc2 and the anode of the second sustained diode r2, the other end of second switch capacitor C d2 links to each other with the end of the second winding L 2b of second coupling inductance, 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 negative electrode of the second sustained diode r2 and the second output diode Do2, the negative electrode of the first output diode Do1 links to each other with the negative electrode of the second output diode Do2 and the end of the first output capacitance Co, the drain electrode of the drain electrode of first power switch tube S 1 and second power switch tube S 2 links to each other with the other end of the negative terminal of power supply Vin and the first output capacitance Co, in the instantiation shown in Figure 1, the other end of the first clamping capacitance Cc1 and the second clamping capacitance Cc2 links to each other with the drain electrode of first power switch tube S 1 and second power switch tube S 2 jointly.
Perhaps also can be as shown in Figure 2, the other end of the first clamping capacitance Cc1 and the second clamping capacitance Cc2 links to each other with the contact of the first winding L 2a of the first winding L 1a of first coupling inductance and second coupling inductance jointly.
Perhaps also can be as shown in Figure 3, the common negative electrode with the first sustained diode o1 and the second sustained diode o2 of the other end of the first clamping capacitance Cc1 and the second clamping capacitance Cc2 connects altogether.
The tertiary winding L1c of the second winding L 1b of the first winding L 1a of above-mentioned first coupling inductance and the link of power supply Vin anode and first coupling inductance and the link of the first switching capacity Cd1 and first coupling inductance and the link of the second output diode Do2 anode are the end of the same name of first coupling inductance; The tertiary winding L2c of the second winding L 2b of the first winding L 2a of second coupling inductance and the link of power supply Vin anode and second coupling inductance and the link of second switch capacitor C d2 and second coupling inductance and the link of the first output diode Do1 anode are the end of the same name of first coupling inductance.
Coupling inductance adds switch electric capacity and realizes that there are eight kinds of courses of work (course of work of Fig. 1～converter shown in Figure 3 is identical) in the passive clamping voltage boosting type interleaved parallel converter, the change of current between promptly 1 shutoff of first power switch tube S and the first clamping diode Dc1 open; The first output diode Do1 turn on process; The first clamping diode Dc1 turn off process; Commutation course between the first output diode Do1 shutoff and first power switch tube S 1 are opened; The change of current between 2 shutoffs of second power switch tube S and the second clamping diode Dc2 open; The second output diode Do2 turn on process; The second clamping diode Dc2 turn off process; Commutation course between the second output diode Do2 shutoff and second power switch tube S 2 are opened.Because the symmetry of circuit, only four commutation courses are that example is analyzed as follows in the past
The change of current between 1 shutoff of first power switch tube S and the first clamping diode Dc1 open:
Before the change of current, circuit is in first power switch tube S 1,2 conductings of second power switch tube S, the first clamping diode Dc1, the second clamping diode Dc2 turn-off, the first sustained diode r1, the second sustained diode r2 turn-off, the steady-working state that the first output diode Do1, the second output diode Do2 turn-off.When first power switch tube S 1 is turn-offed, voltage rises rapidly on first power switch tube S 1, the voltage at the first clamping diode Dc1 two ends is dropped rapidly to zero, the first clamping diode Dc1 is open-minded, because the effect of the first clamping capacitance Cc1, the voltage at first power switch tube S, 1 two ends is certain voltage value by clamp, has realized that the soft clamping of first power switch tube S 1 turn-offs.
The first output diode Do1 turn on process:
After the first clamping diode Dc1 opened, the voltage on the first clamping capacitance Cc1 rose so that certain slope is linear from certain value, and the voltage linear at the first output diode Do1 two ends drops to zero, and the first output diode Do1 is open-minded.Because the transformer action of coupling inductance, the second sustained diode r2 conducting, the energy that is stored on the second clamping capacitance Cc2 is progressively transferred on the second switch capacitor C d2 via the tertiary winding L1c of the second sustained diode r2, first coupling inductance and the second winding L 2b of second coupling inductance.Circuit enters first power switch tube S 1 and turn-offs the first clamping diode Dc conducting, the steady-working state of the second sustained diode r2 conducting and the first output diode Do1 conducting.
The first clamping diode Dc1 turn off process:
After the first output diode Do1 conducting, the energy of first coupling inductance is to load transfer, electric current on the first clamping diode Dc1 descends so that certain slope is linear, and when the electric current on the first clamping diode Dc1 dropped to zero, the first clamping diode Dc1 turn-offed naturally.The energy that is stored on the second clamping capacitance Cc2 continues progressively to transfer on the second switch capacitor C d2 via the tertiary winding L1c of the second sustained diode r2, first coupling inductance and the second winding L 2b of second coupling inductance.Circuit enters first power switch tube S 1 and turn-offs, and the first clamping diode Dc1 turn-offs, the steady-working state of the second sustained diode r2 conducting and the first output diode Do1 conducting.
Commutation course between the first output diode Do1 shutoff and first power switch tube S 1 are opened:
The gate signal of first power switch tube S 1 provides, the electric current of first power switch tube S 1 rises from zero so that certain slope is linear, realized the zero current turning-on of first power switch tube S 1, the electric current of the first output diode Do1 descends so that certain slope is linear, when the electric current of the first output diode Do1 drops to zero, the first output diode Do1 turn-offs, realized that the first output diode Do1 turn-offs and the change of current between opening of first power switch tube S 1, reduce the reverse recovery current of the first output diode Do1, reduced the reverse recovery loss that the first output diode Do1 causes.
Claims (1)
1. a coupling inductance adds switch electric capacity realization passive clamping voltage boosting type interleaved parallel converter, comprise two power switch pipe (S1, S2), two clamping diode (Dc1, Dc2), two clamping capacitance (Cc1, Cc2), two fly-wheel diode (Dr1, Dr2), two switching capacity (Cd1, Cd2), two output diode (Do1, Do2), an output capacitance (Co) and two coupling inductances, it is characterized in that first coupling inductance has three winding (L1a, L1b, L1c), second coupling inductance has three winding (L2a, L2b, L2c), one end of first winding (L1a) of first coupling inductance links to each other with an end of first winding (L2a) of second coupling inductance and the anode of power supply (Vin), the other end of first winding (L1a) of first coupling inductance links to each other with the anode of the source electrode of first power switch pipe (S1) and first clamping diode (Dc1) and an end of first switching capacity (Cd1), the negative electrode of first clamping diode (Dc1) links to each other with an end of first clamping capacitance (Cc1) and the anode of first fly-wheel diode (Dr1), the other end of first switching capacity (Cd1) links to each other with an end of second winding (L1b) of first coupling inductance, 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 negative electrode of first fly-wheel diode (Dr1) and the anode of first output diode (Do1), the other end of first winding (L2a) of second coupling inductance links to each other with the anode of the source electrode of second power switch pipe (S2) and second clamping diode (Dc2) and an end of second switch electric capacity (Cd2), the negative electrode of second clamping diode (Dc2) links to each other with an end of second clamping capacitance (Cc2) and the anode of second fly-wheel diode (Dr2), the other end of second switch electric capacity (Cd2) links to each other with an end of second winding (L2b) of second coupling inductance, 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 negative electrode of second fly-wheel diode (Dr2) and the anode of second output diode (Do2), the negative electrode of first output diode (Do1) links to each other with the negative electrode of second output diode (Do2) and an end of first output capacitance (Co), the drain electrode of the drain electrode of first power switch pipe (S1) and second power switch pipe (S2) links to each other with the other end of the negative terminal of power supply (Vin) and first output capacitance (Co), the other end of first clamping capacitance (Cc1) and second clamping capacitance (Cc2) links to each other with the drain electrode of first power switch pipe (S1) with second power switch pipe (S2) jointly, perhaps the other end of first clamping capacitance (Cc1) and second clamping capacitance (Cc2) common with first coupling inductance first winding (L1a) and the contact of first winding (L2a) of second coupling inductance link to each other, perhaps the other end of first clamping capacitance (Cc1) and second clamping capacitance (Cc2) jointly and the negative electrode of first fly-wheel diode (Do1) and second fly-wheel diode (Do2) connect altogether.The link of the link of first winding (L1a) of above-mentioned first coupling inductance and power supply (Vin) anode and second winding (L1b) of first coupling inductance and first switching capacity (Cd1) and the tertiary winding (L1c) of first coupling inductance are the end of the same name of first coupling inductance with the link of second output diode (Do2) anode; The link of the link of first winding (L2a) of second coupling inductance and power supply (Vin) anode and second winding (L2b) of second coupling inductance and second switch electric capacity (Cd2) and the tertiary winding (L2c) of second coupling inductance are the end of the same name of first coupling inductance with the link of first output diode (Do1) anode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200920116099U CN201383753Y (en) | 2009-03-23 | 2009-03-23 | Pressure raising type staggered parallel connection convertor realizing inactive clamping through coupling inductance added with switching capacity |
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| CN200920116099U CN201383753Y (en) | 2009-03-23 | 2009-03-23 | Pressure raising type staggered parallel connection convertor realizing inactive clamping through coupling inductance added with switching capacity |
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| CN101510726B (en) * | 2009-03-23 | 2010-09-29 | 浙江大学 | Passive clamping voltage boosting type interleave parallel connection converter implemented by coupling inductance and switch capacitance |
| CN102075094A (en) * | 2011-01-07 | 2011-05-25 | 南京航空航天大学 | Forward switched capacitor regulator |
| CN102097950A (en) * | 2011-01-07 | 2011-06-15 | 南京航空航天大学 | Flyback switched capacitor regulator |
| CN103618445A (en) * | 2013-11-15 | 2014-03-05 | 南京航空航天大学 | Coupling inductance ZVS/ZCS double tube direct current converter with charge pump |
| CN105471253A (en) * | 2015-11-24 | 2016-04-06 | 哈尔滨工业大学 | T-type coupling inductance network boost converter |
| CN105896978A (en) * | 2016-04-07 | 2016-08-24 | 厦门大学 | DC-DC converter applied to distributed grid-connected power generation front end |
| CN105896977A (en) * | 2016-04-07 | 2016-08-24 | 厦门大学 | Soft switch of interlaced parallel DC-DC converter |
| CN107565811A (en) * | 2017-08-10 | 2018-01-09 | 燕山大学 | High-gain Double-input direct-current converter and modulator approach based on switched capacitor network |
| CN107911020A (en) * | 2017-11-29 | 2018-04-13 | 深圳市航天新源科技有限公司 | One kind combination inductance interlocks high gain boost circuit |
| CN109617408A (en) * | 2018-12-24 | 2019-04-12 | 北京交通大学 | Based on the capacitor-clamped super high-gain boost converter of three-phase crisscross parallel |
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- 2009-03-23 CN CN200920116099U patent/CN201383753Y/en not_active Expired - Lifetime
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| CN101510726B (en) * | 2009-03-23 | 2010-09-29 | 浙江大学 | Passive clamping voltage boosting type interleave parallel connection converter implemented by coupling inductance and switch capacitance |
| CN102075094A (en) * | 2011-01-07 | 2011-05-25 | 南京航空航天大学 | Forward switched capacitor regulator |
| CN102097950A (en) * | 2011-01-07 | 2011-06-15 | 南京航空航天大学 | Flyback switched capacitor regulator |
| CN102097950B (en) * | 2011-01-07 | 2013-01-23 | 南京航空航天大学 | Flyback switched capacitor regulator |
| CN102075094B (en) * | 2011-01-07 | 2013-01-23 | 南京航空航天大学 | Forward switched capacitor regulator |
| CN103618445B (en) * | 2013-11-15 | 2016-04-06 | 南京航空航天大学 | The two-tube DC converter of coupling inductance ZVS/ZCS with charge pump |
| CN103618445A (en) * | 2013-11-15 | 2014-03-05 | 南京航空航天大学 | Coupling inductance ZVS/ZCS double tube direct current converter with charge pump |
| CN105471253B (en) * | 2015-11-24 | 2018-07-06 | 哈尔滨工业大学 | T-shaped coupling inductance network boost converter |
| CN105471253A (en) * | 2015-11-24 | 2016-04-06 | 哈尔滨工业大学 | T-type coupling inductance network boost converter |
| CN105896978A (en) * | 2016-04-07 | 2016-08-24 | 厦门大学 | DC-DC converter applied to distributed grid-connected power generation front end |
| CN105896977A (en) * | 2016-04-07 | 2016-08-24 | 厦门大学 | Soft switch of interlaced parallel DC-DC converter |
| CN105896977B (en) * | 2016-04-07 | 2018-09-11 | 厦门大学 | A kind of Sofe Switch of crisscross parallel type DC-DC converter |
| CN107565811A (en) * | 2017-08-10 | 2018-01-09 | 燕山大学 | High-gain Double-input direct-current converter and modulator approach based on switched capacitor network |
| CN107911020A (en) * | 2017-11-29 | 2018-04-13 | 深圳市航天新源科技有限公司 | One kind combination inductance interlocks high gain boost circuit |
| TWI682617B (en) * | 2018-06-28 | 2020-01-11 | 崑山科技大學 | Interleaved ultra-high boost converter |
| CN109617408A (en) * | 2018-12-24 | 2019-04-12 | 北京交通大学 | Based on the capacitor-clamped super high-gain boost converter of three-phase crisscross parallel |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100113 Effective date of abandoning: 20090323 |