CN105471271A - Superposed push-pull circuit - Google Patents
Superposed push-pull circuit Download PDFInfo
- Publication number
- CN105471271A CN105471271A CN201510823845.5A CN201510823845A CN105471271A CN 105471271 A CN105471271 A CN 105471271A CN 201510823845 A CN201510823845 A CN 201510823845A CN 105471271 A CN105471271 A CN 105471271A
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- China
- Prior art keywords
- tap
- anode
- power transformer
- push
- mosfet
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
Abstract
The invention discloses a superposed push-pull circuit. The circuit comprises an input power supply, an energy storage inductor, a power transformer, an output filter capacitor, a first MOSFET, a second MOSFET and a driving circuit, wherein a negative terminal of the input power supply is grounded; an input terminal of the energy storage inductor is connected to a positive terminal of the input power supply; the power transformer includes a first tap, a second tap, a third tap, a fourth tap, a fifth tap and a sixth tap; an output terminal of the energy storage inductor is connected to the second tap and the fifth tap respectively; the output filter capacitor is connected in parallel to a load, a positive terminal is connected to the first tap, the third tap, a fourth tap and a sixth tap respectively and a negative terminal is connected to a load of the input power supply; a drain electrode of the first MOSFET is connected to the first tap and a source electrode is connected to the load of the input power supply; a drain electrode of the second MOSFET is connected to the third tap and a source electrode is connected to the load of the input power supply; and the driving circuit is connected to a grid electrode of the first MOSFET and a grid electrode of the second MOSFET respectively. By using the circuit, stresses of a voltage and a current of a power device in the circuit are reduced and a problem that existing superposed push-pull power adjusting topology can not satisfy a high-voltage high power application occasion is solved.
Description
Technical field
The present invention relates to satellite power system power adjustments topologies field, be specifically related to a kind of superposition push-pull circuit.
Background technology
The power that solar battery array sends by the power conditioning module of satellite power system converts by certain technical requirement, be adjusted to the voltage required for bus, be directly load supplying, and control the discharge and recharge of storage battery, to maintain the stability of satellite power system busbar voltage.Along with satellite power system busbar voltage is more and more higher, larger difficulty is brought to choosing of power device, especially aerospace level mosfet, the domestic aerospace level mosfet ceiling voltage stress being applicable to satellite power system of selecting only has 250V at present, therefore in the satellite power system of high voltage bus, the circuit that necessary applied power device voltage stress is low.
Summary of the invention
The object of the present invention is to provide a kind of superposition push-pull circuit, reduce the voltage stress of MOSFET in circuit and voltage stress, the current stress of rectifier diode, and power transformer leakage inductance energy is passed to load end, improve the efficiency of power transformer, to improve the power grade of this circuit, the high-power occasion in satellite power system can be applied in, solve existing superposition Push-Pull power and regulate topology cannot meet the problem of high-power application scenario.
In order to achieve the above object, the present invention is achieved through the following technical solutions: a kind of superposition push-pull circuit, and for powering to the load, be characterized in, this superposition push-pull circuit comprises:
Input power, its negativing ending grounding;
Energy storage inductor, its input is connected with the anode of described input power;
Power transformer, described power transformer comprises the first tap, the second tap, the 3rd tap that are arranged on former limit and is arranged on the 4th tap of secondary, the 5th tap, the 6th tap, and the output of described energy storage inductor is connected with the second tap and the 5th tap respectively;
Output filter capacitor, in parallel with described load, the anode of described output filter capacitor is connected with the first tap of described power transformer, the 3rd tap, the 4th tap and the 6th tap respectively, and negative terminal is connected with the negative terminal of described input power;
One MOSFET, its drain electrode is connected with the first tap of described power transformer, and source electrode is connected with the negative terminal of described input power;
2nd MOSFET, its drain electrode is connected with the 3rd tap of described power transformer, and source electrode is connected with the negative terminal of described input power;
Drive circuit, connects the grid of a MOSFET and the grid of the 2nd MOSFET respectively.
Described superposition push-pull circuit also comprises one first rectifier cell, and the first described rectifier cell is arranged on the 4th of described power transformer the between tap and the anode of output filter capacitor.
Described superposition push-pull circuit also comprises one second rectifier cell, and the second described rectifier cell is arranged on the 6th of described power transformer the between tap and the anode of output filter capacitor.
Described superposition push-pull circuit also comprises one the 3rd rectifier cell, and the 3rd described rectifier cell is arranged between the first tap of described power transformer and the anode of output filter capacitor.
Described superposition push-pull circuit also comprises one the 4th rectifier cell, and the 4th described rectifier cell is arranged on the 3rd of described power transformer the between tap and the anode of output filter capacitor.
The first described rectifier cell is one first diode, and the anode of the first described diode is connected with the 4th tap of described power transformer, and negative electrode is connected with the anode of output filter capacitor.
The second described rectifier cell is one second diode, and the anode of the second described diode is connected with the 6th tap of described power transformer, and negative electrode is connected with the anode of output filter capacitor.
The 3rd described rectifier cell is one the 3rd diode, and the anode of the 3rd described diode is connected with the first tap of described power transformer and the drain electrode of a MOSFET respectively, and negative electrode is connected with the anode of output filter capacitor.
The 4th described rectifier cell is one the 4th diode, and the anode of the 4th described diode is connected with the 3rd tap of described power transformer and the drain electrode of the 2nd MOSFET respectively, and negative electrode is connected with the anode of output filter capacitor.
Described superposition push-pull circuit is used for the high-power occasion of satellite power system.
The present invention's one superposition push-pull circuit compared with prior art has the following advantages: energy storage inductor is moved to circuit input end from circuit output end, the reverse voltage of the drain voltage of MOSFET and rectifier diode can be reduced to output voltage from the input voltage of twice, and eliminate the bias phenomenon of power transformer in superposition push-pull circuit; The drain electrode of the one MOSFET and the 2nd MOSFET is connected to circuit output end respectively by rectifier diode, not only can reduce the current stress of rectifier diode, and power transformer leakage inductance energy can be passed to load when MOSFET turns off, improve the efficiency of power transformer.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram superposing push-pull circuit in prior art;
Fig. 2 is a kind of overall structure schematic diagram superposing push-pull circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Figure 2, a kind of superposition push-pull circuit, for powering to load R, the especially high-power occasion of satellite power system, this superposition push-pull circuit comprises: input power U
in, its negativing ending grounding; Energy storage inductor L, its input and described input power U
inanode connect; Power transformer T, described power transformer T comprises the first tap 1, second tap 2, the 3rd tap 3 that are arranged on former limit and is arranged on the 4th tap 4 of secondary, the 5th tap 5, the 6th tap 6, and the output of described energy storage inductor L is connected with the second tap 2 and the 5th tap 5 respectively; Output filter capacitor C, in parallel with described load R, the anode of described output filter capacitor C is connected with first tap 1 of described power transformer T, the 3rd tap 3, the 4th tap 4 and the 6th tap 6 respectively, negative terminal and described input power U
innegative terminal connect; One MOSFETQ1, its drain electrode is connected with first tap 1 of described power transformer T, source electrode and described input power U
innegative terminal connect; 2nd MOSFETQ2, its drain electrode is connected with the 3rd tap 3 of described power transformer T, source electrode and described input power U
innegative terminal connect; Drive circuit, connects the grid of a MOSFETQ1 and the grid of the 2nd MOSFETQ2 respectively.
In the present embodiment, described superposition push-pull circuit also comprises one first rectifier cell, the first described rectifier cell is arranged between the 4th tap 4 of described power transformer T and the anode of output filter capacitor C, preferably, the first described rectifier cell is one first diode D1, the anode of the first described diode D1 is connected with the 4th tap 4 of described power transformer T, and negative electrode is connected with the anode of output filter capacitor C.
In the present embodiment, described superposition push-pull circuit also comprises one second rectifier cell, the second described rectifier cell is arranged between the 6th tap 6 of described power transformer T and the anode of output filter capacitor C, preferably, the second described rectifier cell is one second diode D2, the anode of the second described diode D2 is connected with the 6th tap 6 of described power transformer T, and negative electrode is connected with the anode of output filter capacitor C.
In the present embodiment, described superposition push-pull circuit also comprises one the 3rd rectifier cell, the 3rd described rectifier cell is arranged between first tap 1 of described power transformer T and the anode of output filter capacitor C, preferably, the 3rd described rectifier cell is one the 3rd diode D3, the anode of the 3rd described diode D3 is connected with first tap 1 of described power transformer T and the drain electrode of a MOSFETQ1 respectively, and negative electrode is connected with the anode of output filter capacitor C.
In the present embodiment, described superposition push-pull circuit also comprises one the 4th rectifier cell, the 4th described rectifier cell is arranged between the 3rd tap 3 of described power transformer T and the anode of output filter capacitor C, preferably, the 4th described rectifier cell is one the 4th diode D4, the anode of the 4th described diode D4 is connected with the 3rd tap 3 of described power transformer T and the drain electrode of the 2nd MOSFETQ2 respectively, and negative electrode is connected with the anode of output filter capacitor C.
As Fig. 2, and shown in composition graphs 1, the present invention is relative to the improvement of prior art:
Energy storage inductor is moved to circuit input end from circuit output end, adopt this kind of connected mode the reverse voltage of the drain voltage of MOSFET and rectifier diode can be reduced to output voltage from the input voltage of twice, and eliminate the bias phenomenon of power transformer in superposition push-pull circuit;
Output is connected to respectively by rectifier diode from a MOSFET and MOSFET drain electrode, adopt this kind of connected mode, not only can reduce the current stress of rectifier diode, and power transformer leakage inductance energy can be passed to load when MOSFET turns off, improve the efficiency of power transformer.
Composition graphs 2, is described the course of work of the present invention, and Q1, Q2 interlock conducting:
(1) when Q1 conducting Q2 turns off:
The electric current of energy storage inductor has three flow directions, is respectively through power transformer winding 21 (winding between the first tap 1 and the second tap 2, lower same) to Q1 to Power Groud; Through power transformer winding 23 to D4 to load; Through power transformer winding 56 to D2 to load, now the voltage stress of D1, D3, Q2 is busbar voltage.
(2) when Q2 conducting Q1 turns off:
The electric current of energy storage inductor has three flow directions, is respectively through power transformer winding 23 to Q2 to Power Groud; Through power transformer winding 21 to D3 to load; Through power transformer winding 54 to D1 to load, now, the voltage stress of D2, D4, Q1 is busbar voltage.
(3) when Q1, Q2 all turn off:
The electric current of energy storage inductor has four flow directions, is respectively through power transformer winding 54 to D1 to load; Through power transformer winding 56 to D2 to load; Through power transformer winding 21 to D3 to load; Through power transformer winding 23 to D4 to load, now the voltage stress of Q1, Q2 is busbar voltage.
(4) when Q1, Q2 all open:
The electric current of energy storage inductor flow to Power Groud by Q1, Q2.
Output voltage is derived:
When single tube (power tube Q1 or power tube Q2) duty ratio D≤0.5, to energy storage inductor by voltage-second balance,
In formula, Vin represents input voltage, and Vo represents output voltage, and T represents the switch periods of power tube, and D represents single tube duty ratio;
When single tube duty ratio 0.5≤D≤1, to energy storage inductor by voltage-second balance,
In formula, Vin represents input voltage, and Vo represents output voltage, and T represents the switch periods of power tube, and D represents single tube duty ratio; T represents the switch periods of power tube, and D represents single tube duty ratio;
Thus derive, in full duty cycle range, the superposition push-pull circuit output voltage after improvement is:
In formula, Vin represents input voltage, and Vo represents that output voltage D represents single tube duty ratio.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a superposition push-pull circuit, for powering to the load, is characterized in that, this superposition push-pull circuit comprises:
Input power, its negativing ending grounding;
Energy storage inductor, its input is connected with the anode of described input power;
Power transformer, described power transformer comprises the first tap, the second tap, the 3rd tap that are arranged on former limit and is arranged on the 4th tap of secondary, the 5th tap, the 6th tap, and the output of described energy storage inductor is connected with the second tap and the 5th tap respectively;
Output filter capacitor, in parallel with described load, the anode of described output filter capacitor is connected with the first tap of described power transformer, the 3rd tap, the 4th tap and the 6th tap respectively, and negative terminal is connected with the negative terminal of described input power;
One MOSFET, its drain electrode is connected with the first tap of described power transformer, and source electrode is connected with the negative terminal of described input power;
2nd MOSFET, its drain electrode is connected with the 3rd tap of described power transformer, and source electrode is connected with the negative terminal of described input power;
Drive circuit, connects the grid of a MOSFET and the grid of the 2nd MOSFET respectively.
2. superpose push-pull circuit as claimed in claim 1, it is characterized in that, comprise one first rectifier cell further, the first described rectifier cell is arranged on the 4th of described power transformer the between tap and the anode of output filter capacitor.
3. superpose push-pull circuit as claimed in claim 1, it is characterized in that, comprise one second rectifier cell further, the second described rectifier cell is arranged on the 6th of described power transformer the between tap and the anode of output filter capacitor.
4. superpose push-pull circuit as claimed in claim 1, it is characterized in that, comprise one the 3rd rectifier cell further, the 3rd described rectifier cell is arranged between the first tap of described power transformer and the anode of output filter capacitor.
5. superpose push-pull circuit as claimed in claim 1, it is characterized in that, comprise one the 4th rectifier cell further, the 4th described rectifier cell is arranged on the 3rd of described power transformer the between tap and the anode of output filter capacitor.
6. superpose push-pull circuit as claimed in claim 2, it is characterized in that, the first described rectifier cell is one first diode, and the anode of the first described diode is connected with the 4th tap of described power transformer, and negative electrode is connected with the anode of output filter capacitor.
7. superpose push-pull circuit as claimed in claim 3, it is characterized in that, the second described rectifier cell is one second diode, and the anode of the second described diode is connected with the 6th tap of described power transformer, and negative electrode is connected with the anode of output filter capacitor.
8. superpose push-pull circuit as claimed in claim 4, it is characterized in that, the 3rd described rectifier cell is one the 3rd diode, the anode of the 3rd described diode is connected with the first tap of described power transformer and the drain electrode of a MOSFET respectively, and negative electrode is connected with the anode of output filter capacitor.
9. superpose push-pull circuit as claimed in claim 5, it is characterized in that, the 4th described rectifier cell is one the 4th diode, the anode of the 4th described diode is connected with the 3rd tap of described power transformer and the drain electrode of the 2nd MOSFET respectively, and negative electrode is connected with the anode of output filter capacitor.
10. the superposition push-pull circuit as described in claim 1 ~ 9 any one claim, is characterized in that, described superposition push-pull circuit is used for the high-power occasion of satellite power system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823845.5A CN105471271A (en) | 2015-11-24 | 2015-11-24 | Superposed push-pull circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510823845.5A CN105471271A (en) | 2015-11-24 | 2015-11-24 | Superposed push-pull circuit |
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| Publication Number | Publication Date |
|---|---|
| CN105471271A true CN105471271A (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510823845.5A Pending CN105471271A (en) | 2015-11-24 | 2015-11-24 | Superposed push-pull circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452023A (en) * | 2016-10-19 | 2017-02-22 | 成都益睿信科技有限公司 | Drive circuit structure based on critical voltage drift suppression |
| CN109444707A (en) * | 2018-12-14 | 2019-03-08 | 凯斯库汽车部件（苏州）有限公司 | The insulating gate type field effect tube detection circuit of open loop push-pull converter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5488554A (en) * | 1994-08-23 | 1996-01-30 | Acme Electric Corporation | Low-loss clamp circuit |
| US5654881A (en) * | 1996-03-01 | 1997-08-05 | Lockheed Martin Corporation | Extended range DC-DC power converter circuit |
| JP4579883B2 (en) * | 2006-08-31 | 2010-11-10 | 東光株式会社 | Self-excited push-pull power supply |
| CN203562961U (en) * | 2013-09-30 | 2014-04-23 | 洛阳隆盛科技有限责任公司 | Quasi-resonance soft switch push-pull converter circuit |
-
2015
- 2015-11-24 CN CN201510823845.5A patent/CN105471271A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5488554A (en) * | 1994-08-23 | 1996-01-30 | Acme Electric Corporation | Low-loss clamp circuit |
| US5654881A (en) * | 1996-03-01 | 1997-08-05 | Lockheed Martin Corporation | Extended range DC-DC power converter circuit |
| JP4579883B2 (en) * | 2006-08-31 | 2010-11-10 | 東光株式会社 | Self-excited push-pull power supply |
| CN203562961U (en) * | 2013-09-30 | 2014-04-23 | 洛阳隆盛科技有限责任公司 | Quasi-resonance soft switch push-pull converter circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452023A (en) * | 2016-10-19 | 2017-02-22 | 成都益睿信科技有限公司 | Drive circuit structure based on critical voltage drift suppression |
| CN109444707A (en) * | 2018-12-14 | 2019-03-08 | 凯斯库汽车部件（苏州）有限公司 | The insulating gate type field effect tube detection circuit of open loop push-pull converter |
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