CN204349810U - Three-phase staggered bi-directional current transformer - Google Patents
Three-phase staggered bi-directional current transformer Download PDFInfo
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- CN204349810U CN204349810U CN201520055367.3U CN201520055367U CN204349810U CN 204349810 U CN204349810 U CN 204349810U CN 201520055367 U CN201520055367 U CN 201520055367U CN 204349810 U CN204349810 U CN 204349810U
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Abstract
In order to solve existing structure three-phase staggered bi-directional DC-DC current transformer existing for the shortcoming such as not high, the spread of voltage of transformer energy efficiency of transmission, the utility model provides a kind of three-phase staggered bi-directional DC-DC current transformer, is made up of high frequency transformer, current transformer load end module and current transformer power end module; The first derided capacitors C102 and the second derided capacitors C103 is set up at load end; Power end sets up the first derided capacitors C202 and the second derided capacitors C203; And three resonant inductances L204, L205, L206 are increased newly in current transformer power end module 2.The beneficial effects of the utility model are: the utility model adopts additional inductor to realize resonance, does not rely on the leakage inductance of high frequency transformer, thus reduces the leakage inductance value of high frequency transformer as far as possible, are conducive to the efficiency improving transformer.
Description
Technical field
The utility model belongs to converter topology field, is specifically related to a kind of three-phase staggered bi-directional current transformer.
Background technology
Due to shortage and the Global Greenhouse Effect of fossil fuel, the hybrid-electric car of traditional combustion engine automobile has attracted more concern as an alternative in recent years.Hybrid-electric car adopts auxiliary as main power source of jumbo storage battery or ultracapacitor, and as energy-storage units, interface between main power source and load, the bi-directional DC-DC current transformer of high power density acts on extremely important in EMS.Solve the compatibling problem between different-energy unit by the three-phase multiport two way convertor of employing cross structure, reduce component number, size, the coordination and the optimal control that realize energy system inside are the focuses studied at present.
Fig. 1 is existing three-phase staggered bi-directional current transformer, is made up of current transformer load end module 1, current transformer power end module 2 and high frequency transformer 3;
Described current transformer load end module 1 comprises 1 load end electric capacity C101, and load end first switch element DL1, load end second switch cells D L2, load end the 3rd switch element DL3, load end the 4th switch element DL4, load end the 5th switch element DL5, load end the 6th switch element DL6, one end of load end electric capacity C101 and one end of load end first switch element DL1, one end of load end the 3rd switch element DL3, one end of load end the 5th switch element DL5 links together, the other end of load end electric capacity C101 and one end of load end second switch cells D L2, one end of load end the 4th switch element DL4, one end of load end the 6th switch element DL6 links together, the other end of load end first switch element DL1 is connected with the other end of load end the 4th switch element DL4, the other end of load end the 3rd switch element DL3 is connected with the other end of load end the 6th switch element DL6, the other end of load end the 5th switch element DL5 is connected with the other end of load end second switch cells D L2.
Described current transformer power end module 2 comprises power end electric capacity C201, power end first switch element DP1, power end second switch cells D P2, power end the 3rd switch element DP3, power end second switch cells D P4, power end the 5th switch element DP5, power end the 6th switch element DP6; Wherein, one end of power end electric capacity C201, one end of power end first switch element DP1, one end of power end the 3rd switch element DP3, one end of power end the 5th switch element DP5 link together jointly; One end of the other end of power end electric capacity C201, one end of power end second switch cells D P2, power end second switch cells D P4, one end of power end the 6th switch element DP6 link together jointly; The other end of power end first switch element DP1 is connected with the other end of power end second switch cells D P4; The other end of power end the 3rd switch element DP3 is connected with the other end of power end the 6th switch element DP6; The other end of power end second switch cells D P2 is connected with the other end of power end the 5th switch element DP5;
In addition, power end first inductance L 201, power end second inductance L 202, power end the 3rd inductance L 203 is also provided with in current transformer power end module 2, wherein, one end of power end first inductance L 201, one end of power end second inductance L 202, one end of power end the 3rd inductance L 203 link together jointly.
Described high frequency transformer 3 comprises power end first limit winding W11, power end Second Edge winding W12, power end the 3rd limit winding W13, load end first limit winding W21, load end Second Edge winding W22 and load end the 3rd limit winding W23; Wherein, one end of one end of power end first limit winding W11, one end of power end Second Edge winding W12 and power end the 3rd limit winding W13 links together jointly; One end of one end of load end first limit winding W21, one end of load end Second Edge winding W22 and load end the 3rd limit winding W23 links together jointly;
The other end of the other end of power end first limit winding W11, the other end of power end Second Edge winding W12, power end the 3rd limit winding W13 is connected one by one with the other end of power end first inductance L 201, the other end of power end second inductance L 202, the other end of power end the 3rd inductance L 203 respectively.
The other end of the other end of load end first limit winding W21, the other end of load end Second Edge winding W22, load end the 3rd limit winding W23 respectively with the tie point of the tie point of load end first switch element DL1 and load end the 4th switch element DL4, load end the 3rd switch element DL3 and load end the 6th switch element DL6, load end the 5th switch element DL5 and load end second switch cells D L2 tie point be connected one by one.
During use, the current transformer load end module 1 of this structure is connected with load unit 6; Current transformer power end module 2 is connected with generator unit 4, energy-storage units 5 respectively.Generator unit 4, bi-directional energy between energy-storage units 5 and load unit 6; Current transformer power end module 2 has electrical isolation, the different electric pressures can mated by the corresponding number of turn of the high frequency transformer 3 adjusting Multiple coil; It is large that it has through-put power; Low ripple electric current; Switching device current stress is little; When not by auxiliary resonance circuit, just can realize the advantages such as all switching devices Sofe Switch work in a big way.But there is following remarkable shortcoming in above-mentioned current transformer: the current transformer due to said structure utilizes transformer leakage inductance to realize Sofe Switch, affects the energy transmission efficiency of transformer to a certain extent; Meanwhile, the current transformer of said structure lacks voltage clamp circuit, spread of voltage.
Utility model content
In order to solve said structure current transformer existing for the shortcoming such as not high, the spread of voltage of transformer energy efficiency of transmission, the utility model provides a kind of three-phase staggered bi-directional current transformer, and its concrete structure is:
Three-phase staggered bi-directional current transformer, is made up of current transformer load end module 1, current transformer power end module 2 and high frequency transformer 3; Described current transformer load end module 1 comprises 1 load end electric capacity C101; Described current transformer power end module 2 comprises power end electric capacity C201, power end first switch element DP1, power end second switch cells D P2, power end the 3rd switch element DP3, power end second switch cells D P4, power end the 5th switch element DP5, power end the 6th switch element DP6; Wherein, one end of power end electric capacity C201, one end of power end first switch element DP1, one end of power end the 3rd switch element DP3, one end of power end the 5th switch element DP5 link together jointly; One end of the other end of power end electric capacity C201, one end of power end second switch cells D P2, power end second switch cells D P4, one end of power end the 6th switch element DP6 link together jointly; The other end of power end first switch element DP1 is connected with the other end of power end second switch cells D P4; The other end of power end the 3rd switch element DP3 is connected with the other end of power end the 6th switch element DP6; The other end of power end second switch cells D P2 is connected with the other end of power end the 5th switch element DP5; Described high frequency transformer 3 comprises power end first limit winding W11, power end Second Edge winding W12, power end the 3rd limit winding W13, load end first limit winding W21, load end Second Edge winding W22 and load end the 3rd limit winding W23; Wherein, one end of one end of power end first limit winding W11, one end of power end Second Edge winding W12 and power end the 3rd limit winding W13 links together jointly; One end of one end of load end first limit winding W21, one end of load end Second Edge winding W22 and load end the 3rd limit winding W23 links together jointly;
In addition, power end first resonant inductance L204, power end second resonant inductance L205, power end the 3rd resonant inductance L206, power end first derided capacitors C202, power end second derided capacitors C203, load end first derided capacitors C102 and load end second derided capacitors C103 is also provided with;
Power end first resonant inductance L204 is provided with between the tie point of power end first switch element DP1 and power end second switch cells D P4 and the other end of power end first limit winding W11; Power end second resonant inductance L205 is provided with between the tie point of power end the 3rd switch element DP3 and power end the 6th switch element DP6 and the other end of power end Second Edge winding W12; Power end the 3rd resonant inductance L206 is provided with between the tie point of power end second switch cells D P2 and power end the 5th switch element DP5 and the other end of power end the 3rd limit winding W13;
One end of power end electric capacity C201 is connected with one end of power end first derided capacitors C202, the other end of power end electric capacity C201 is connected with one end of power end second derided capacitors C203, the other end of power end first derided capacitors C202 is connected with the other end of power end second derided capacitors C203, and the tie point between power end first derided capacitors C202 with power end second derided capacitors C203 is connected with the common connecting point of power end first limit winding W11, power end Second Edge winding W12 and power end the 3rd limit winding W13;
One end of load end electric capacity C101 is connected with one end of load end first derided capacitors C102, the other end of load end electric capacity C101 is connected with one end of load end second derided capacitors C103, the load end first derided capacitors C102 other end is connected with the other end of load end second derided capacitors C103, and the tie point between load end first derided capacitors C102 with load end second derided capacitors C103 is connected with the common connecting point of load end the 3rd limit winding W23 with load end first limit winding W21, load end Second Edge winding W22.
useful technique effect
Current transformer power end module 2 of the present utility model adopts additional inductor to realize resonance, does not rely on the leakage inductance of high frequency transformer, thus reduces the leakage inductance value of high frequency transformer as far as possible, is conducive to the efficiency improving transformer; The utility model realizes the Sofe Switch of whole switching tube, reduces switching loss and conduction loss, improves power density; Three-phase staggered bi-directional DC-DC current transformer of the present utility model belongs to current source type, can realize high step-up ratio when the low transformation ratio of transformer;
Along with the increase of energy-storage units capacity, the utility model can expand the number of phases by increasing two way convertor; Meanwhile, because three-phase staggered bi-directional DC-DC current transformer adopts capacitor voltage equalizing, contribute to reducing costs.
Current transformer of the present utility model adopts three-phase cross structure to reduce the current stress of switching device, reduces ripple current, can raise the efficiency simultaneously.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of the three-phase staggered bi-directional current transformer of existing structure.
Fig. 2 is the circuit structure diagram of three-phase staggered bi-directional current transformer of the present utility model.
Embodiment
Now be described with reference to the accompanying drawings design feature of the present utility model.
See Fig. 2, three-phase staggered bi-directional current transformer, is made up of current transformer load end module 1, current transformer power end module 2 and high frequency transformer 3; Described current transformer load end module 1 comprises 1 load end electric capacity C101; Described current transformer power end module 2 comprises power end electric capacity C201, power end first switch element DP1, power end second switch cells D P2, power end the 3rd switch element DP3, power end second switch cells D P4, power end the 5th switch element DP5, power end the 6th switch element DP6; Wherein, one end of power end electric capacity C201, one end of power end first switch element DP1, one end of power end the 3rd switch element DP3, one end of power end the 5th switch element DP5 link together jointly; One end of the other end of power end electric capacity C201, one end of power end second switch cells D P2, power end second switch cells D P4, one end of power end the 6th switch element DP6 link together jointly; The other end of power end first switch element DP1 is connected with the other end of power end second switch cells D P4; The other end of power end the 3rd switch element DP3 is connected with the other end of power end the 6th switch element DP6; The other end of power end second switch cells D P2 is connected with the other end of power end the 5th switch element DP5; Described high frequency transformer 3 comprises power end first limit winding W11, power end Second Edge winding W12, power end the 3rd limit winding W13, load end first limit winding W21, load end Second Edge winding W22 and load end the 3rd limit winding W23; Wherein, one end of one end of power end first limit winding W11, one end of power end Second Edge winding W12 and power end the 3rd limit winding W13 links together jointly; One end of one end of load end first limit winding W21, one end of load end Second Edge winding W22 and load end the 3rd limit winding W23 links together jointly;
See Fig. 2, be also provided with power end first resonant inductance L204, power end second resonant inductance L205, power end the 3rd resonant inductance L206, power end first derided capacitors C202, power end second derided capacitors C203, load end first derided capacitors C102 and load end second derided capacitors C103;
Power end first resonant inductance L204 is provided with between the tie point of power end first switch element DP1 and power end second switch cells D P4 and the other end of power end first limit winding W11; Power end second resonant inductance L205 is provided with between the tie point of power end the 3rd switch element DP3 and power end the 6th switch element DP6 and the other end of power end Second Edge winding W12; Power end the 3rd resonant inductance L206 is provided with between the tie point of power end second switch cells D P2 and power end the 5th switch element DP5 and the other end of power end the 3rd limit winding W13;
One end of power end electric capacity C201 is connected with one end of power end first derided capacitors C202, the other end of power end electric capacity C201 is connected with one end of power end second derided capacitors C203, the other end of power end first derided capacitors C202 is connected with the other end of power end second derided capacitors C203, and the tie point between power end first derided capacitors C202 with power end second derided capacitors C203 is connected with the common connecting point of power end first limit winding W11, power end Second Edge winding W12 and power end the 3rd limit winding W13;
One end of load end electric capacity C101 is connected with one end of load end first derided capacitors C102, the other end of load end electric capacity C101 is connected with one end of load end second derided capacitors C103, the load end first derided capacitors C102 other end is connected with the other end of load end second derided capacitors C103, and the tie point between load end first derided capacitors C102 with load end second derided capacitors C103 is connected with the common connecting point of load end the 3rd limit winding W23 with load end first limit winding W21, load end Second Edge winding W22.
Furtherly, described current transformer load end module 1 is also provided with load end first switch element DL1, load end second switch cells D L2, load end the 3rd switch element DL3, load end the 4th switch element DL4, load end the 5th switch element DL5, load end the 6th switch element DL6, one end of load end electric capacity C101 and one end of load end first switch element DL1, one end of load end the 3rd switch element DL3, one end of load end the 5th switch element DL5 links together, the other end of load end electric capacity C101 and one end of load end second switch cells D L2, one end of load end the 4th switch element DL4, one end of load end the 6th switch element DL6 links together, the other end of load end first switch element DL1 is connected with the other end of load end the 4th switch element DL4, the other end of load end the 3rd switch element DL3 is connected with the other end of load end the 6th switch element DL6, the other end of load end the 5th switch element DL5 is connected with the other end of load end second switch cells D L2.Load end first switch element DL1 is connected with the other end of load end first limit winding W21 with the tie point of load end the 4th switch element DL4, load end the 3rd switch element DL3 is connected with the other end of load end Second Edge winding W22 with the tie point of load end the 6th switch element DL6, and load end the 5th switch element DL5 is connected with the other end of load end the 3rd limit winding W23 with the tie point of load end second switch cells D L2.
Furtherly, power end first inductance L 201, power end second inductance L 202, power end the 3rd inductance L 203 is also provided with in current transformer power end module 2, wherein, one end of power end first inductance L 201, one end of power end second inductance L 202, one end of power end the 3rd inductance L 203 link together jointly.The other end of power end first inductance L 201 is connected with the tie point of power end second switch cells D P4 with power end first switch element DP1, the other end of power end second inductance L 202 is connected with the tie point of power end the 6th switch element DP6 with power end the 3rd switch element DP3, and the other end of power end the 3rd inductance L 203 is connected with the tie point of power end the 5th switch element DP5 with power end second switch cells D P2.
Namely electric capacity C102 and C103 setting up numerical value identical at load end all presses; Electric capacity C202 and C203 that power end sets up numerical value identical all presses; And resonant inductance L204, L205, L206 that in current transformer power end module 2, newly-increased three numerical value are identical play series resonance effect in circuit, realize the Sofe Switch of switching tube.
Claims (1)
1. three-phase staggered bi-directional current transformer, is made up of current transformer load end module (1), current transformer power end module (2) and high frequency transformer (3); Described current transformer load end module (1) comprises 1 load end electric capacity C101; Described current transformer power end module (2) comprises power end electric capacity C201, power end first switch element DP1, power end second switch cells D P2, power end the 3rd switch element DP3, power end second switch cells D P4, power end the 5th switch element DP5, power end the 6th switch element DP6; Wherein, one end of power end electric capacity C201, one end of power end first switch element DP1, one end of power end the 3rd switch element DP3, one end of power end the 5th switch element DP5 link together jointly; One end of the other end of power end electric capacity C201, one end of power end second switch cells D P2, power end second switch cells D P4, one end of power end the 6th switch element DP6 link together jointly; The other end of power end first switch element DP1 is connected with the other end of power end second switch cells D P4; The other end of power end the 3rd switch element DP3 is connected with the other end of power end the 6th switch element DP6; The other end of power end second switch cells D P2 is connected with the other end of power end the 5th switch element DP5; Described high frequency transformer (3) comprises power end first limit winding W11, power end Second Edge winding W12, power end the 3rd limit winding W13, load end first limit winding W21, load end Second Edge winding W22 and load end the 3rd limit winding W23; Wherein, one end of one end of power end first limit winding W11, one end of power end Second Edge winding W12 and power end the 3rd limit winding W13 links together jointly; One end of one end of load end first limit winding W21, one end of load end Second Edge winding W22 and load end the 3rd limit winding W23 links together jointly;
It is characterized in that: be also provided with power end first resonant inductance L204, power end second resonant inductance L205, power end the 3rd resonant inductance L206, power end first derided capacitors C202, power end second derided capacitors C203, load end first derided capacitors C102 and load end second derided capacitors C103;
Power end first resonant inductance L204 is provided with between the tie point of power end first switch element DP1 and power end second switch cells D P4 and the other end of power end first limit winding W11; Power end second resonant inductance L205 is provided with between the tie point of power end the 3rd switch element DP3 and power end the 6th switch element DP6 and the other end of power end Second Edge winding W12; Power end the 3rd resonant inductance L206 is provided with between the tie point of power end second switch cells D P2 and power end the 5th switch element DP5 and the other end of power end the 3rd limit winding W13;
One end of power end electric capacity C201 is connected with one end of power end first derided capacitors C202, the other end of power end electric capacity C201 is connected with one end of power end second derided capacitors C203, the other end of power end first derided capacitors C202 is connected with the other end of power end second derided capacitors C203, and the tie point between power end first derided capacitors C202 with power end second derided capacitors C203 is connected with the common connecting point of power end first limit winding W11, power end Second Edge winding W12 and power end the 3rd limit winding W13;
One end of load end electric capacity C101 is connected with one end of load end first derided capacitors C102, the other end of load end electric capacity C101 is connected with one end of load end second derided capacitors C103, the load end first derided capacitors C102 other end is connected with the other end of load end second derided capacitors C103, and the tie point between load end first derided capacitors C102 with load end second derided capacitors C103 is connected with the common connecting point of load end the 3rd limit winding W23 with load end first limit winding W21, load end Second Edge winding W22.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520055367.3U CN204349810U (en) | 2015-01-27 | 2015-01-27 | Three-phase staggered bi-directional current transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520055367.3U CN204349810U (en) | 2015-01-27 | 2015-01-27 | Three-phase staggered bi-directional current transformer |
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| CN204349810U true CN204349810U (en) | 2015-05-20 |
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| CN201520055367.3U Expired - Fee Related CN204349810U (en) | 2015-01-27 | 2015-01-27 | Three-phase staggered bi-directional current transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787779A (en) * | 2016-12-29 | 2017-05-31 | 北京天诚同创电气有限公司 | Multiphase two-way resonance DC transfer circuit and its control method, control system |
| CN112701916A (en) * | 2020-12-08 | 2021-04-23 | 华中科技大学 | Three-phase interleaved Boost integrated bidirectional CLLLC resonant converter and control method thereof |
-
2015
- 2015-01-27 CN CN201520055367.3U patent/CN204349810U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787779A (en) * | 2016-12-29 | 2017-05-31 | 北京天诚同创电气有限公司 | Multiphase two-way resonance DC transfer circuit and its control method, control system |
| CN106787779B (en) * | 2016-12-29 | 2019-03-05 | 北京天诚同创电气有限公司 | Multiphase two-way resonance DC transfer circuit and its control method, control system |
| CN112701916A (en) * | 2020-12-08 | 2021-04-23 | 华中科技大学 | Three-phase interleaved Boost integrated bidirectional CLLLC resonant converter and control method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20160127 |
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| EXPY | Termination of patent right or utility model |