CN105871243A - Three-phase three-wire energy bidirectional AC-DC converter - Google Patents
Three-phase three-wire energy bidirectional AC-DC converter Download PDFInfo
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- CN105871243A CN105871243A CN201610293278.1A CN201610293278A CN105871243A CN 105871243 A CN105871243 A CN 105871243A CN 201610293278 A CN201610293278 A CN 201610293278A CN 105871243 A CN105871243 A CN 105871243A
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
- H02M7/68—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters
- H02M7/72—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/79—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/797—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention relates to a three-phase three-wire energy bidirectional AC-DC converter. The three-phase three-wire energy bidirectional AC-DC converter comprises a voltage division circuit, a bidirectional AC-DC conversion circuit, an energy storage device and a control circuit; the voltage division circuit is used for being connected with a first power supply end to bear input voltage of the first power supply end and at least comprises two voltage division units which are connected with each other in series and have the same structure; the bidirectional AC-DC conversion circuit comprises bidirectional AC-DC conversion units of which the number is the same as that of the voltage division units, all the bidirectional AC-DC conversion units have the same structure and are mutually connected in parallel, the bidirectional AC-DC conversion units and the voltage division units are connected in a one-to-one corresponding mode, and first ends of the bidirectional AC-DC conversion units are connected with the voltage division units, so that the voltage division units supply the input voltage to the bidirectional AC-DC conversion units; the energy storage device is used for storing electric energy output by second ends or supplying the input voltage to the second ends; the control circuit is used for controlling bidirectional AC-DC conversion. The three-phase three-wire energy bidirectional AC-DC converter is high in reliability and low in cost.
Description
Technical field
The present invention relates to Technics of Power Electronic Conversion technical field, particularly relate to a kind of two-way friendship of phase three-wire three energy
DC converter.
Background technology
The two-way AC/DC convertor of phase three-wire three energy is for realizing the bi-directional of energy.Traditional three-phase three
The two-way AC/DC convertor of heat input is when powerful application scenario, and input voltage is the highest, thus wants
Ask the pressure higher of device on the two-way AC/DC convertor of phase three-wire three energy, in turn result on parts selection
Difficulty and the increase of cost, and the reliability of system is relatively low.
Summary of the invention
Based on this, it is necessary to provide one to have high reliability and the lower-cost two-way friendship of phase three-wire three energy
DC converter.
A kind of two-way AC/DC convertor of phase three-wire three energy, including: bleeder circuit, it is used for and the first power supply
End is connected with the input voltage undertaking described first power end；Described bleeder circuit at least includes two mutual strings
Connection and the identical partial pressure unit of structure；Two-way ac-dc conversion circuit, including with described partial pressure unit quantity phase
Same two-way ac-dc conversion unit；The structure of each two-way ac-dc conversion unit is identical and setting parallel with one another；
Each two-way ac-dc conversion unit and a partial pressure unit connect one to one；Each two-way alternating current-direct current
Converter unit all includes the first end and the second end；First end of two-way ac-dc conversion unit and described dividing potential drop list
Unit connects, to be provided input voltage by described partial pressure unit to two-way ac-dc conversion unit；Energy storage device,
The second end with each two-way ac-dc conversion unit is connected respectively, with store second end output electric energy or
Input voltage is provided to the second end；And control circuit, for described two-way ac-dc conversion circuit is carried out
Control.
Wherein in an embodiment, each two-way ac-dc conversion circuit all includes that transformer, full-bridge are whole
Current circuit and push-pull circuit；One end of described full bridge rectifier is as described two-way ac-dc conversion unit
First end is connected with described partial pressure unit；The other end of described full bridge rectifier and the first of described transformer
Winding connects；One end of described push-pull circuit is connected with the second winding of described transformer, described push-pull circuit
The other end be connected with described energy storage device as the second end of described two-way ac-dc conversion unit.
Wherein in an embodiment, described full bridge rectifier include the first metal-oxide-semiconductor, the second metal-oxide-semiconductor,
3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor；The drain electrode of described first metal-oxide-semiconductor and the leakage of described second metal-oxide-semiconductor
Pole is connected with one end of described partial pressure unit after connecting；The source electrode of described first metal-oxide-semiconductor and described 3rd MOS
The drain electrode of pipe is connected with one end of described first winding after connecting；The source electrode of described second metal-oxide-semiconductor and described the
The other end of one winding connects；The source electrode of described 3rd metal-oxide-semiconductor is connected with the source electrode of described 4th metal-oxide-semiconductor
The other end with described partial pressure unit is connected afterwards；Described first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd MOS
The grid of pipe and the 4th metal-oxide-semiconductor is connected with described control circuit.
Wherein in an embodiment, described full bridge rectifier also includes reverse two poles in parallel with metal-oxide-semiconductor
Pipe；The positive pole of backward dioded is connected with the source electrode of metal-oxide-semiconductor；The negative pole of backward dioded and metal-oxide-semiconductor
Drain electrode connects.
Wherein in an embodiment, described push-pull circuit includes the 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor；Institute
The grid of the grid and described 6th metal-oxide-semiconductor of stating the 5th metal-oxide-semiconductor is connected with described control circuit respectively；Institute
The drain electrode stating the 5th metal-oxide-semiconductor is connected with one end of described second winding；The drain electrode of described 6th metal-oxide-semiconductor with
The other end of described second winding connects；The source electrode of described 5th metal-oxide-semiconductor and the source of described 6th metal-oxide-semiconductor
Pole is connected with one end of described energy storage device after connecting；3rd end of described second winding and described energy storage device
The other end connect；3rd end of described second winding is positioned at the first end of described second winding and the second end
Middle.
Wherein in an embodiment, described push-pull circuit also includes storing stream inductance；Described storage flows inductance connection
Between the 3rd end and the described energy storage device of the second winding of described transformer.
Wherein in an embodiment, it is defeated that described control circuit is additionally operable to each two-way ac-dc conversion unit
Go out electric current to carry out detecting and respectively exporting size of current；Described control circuit is additionally operable to output electric current bigger
Two-way ac-dc conversion unit in electric current be adjusted, so that in each two-way ac-dc conversion unit
Electric current is identical.
Wherein in an embodiment, described partial pressure unit includes bus capacitor.
Wherein in an embodiment, described energy storage device includes storage capacitor.
The above-mentioned two-way AC/DC convertor of phase three-wire three energy, the bleeder circuit connecting the first power end includes many
The partial pressure unit that individual structure is identical, so that the voltage in each partial pressure unit is identical and the respectively less than first electricity
The input voltage of source, guarantees holding on each two-way ac-dc conversion unit being connected with partial pressure unit then
Press less, improve the reliability of equipment, can also reduce each unit in two-way ac-dc conversion unit simultaneously
The resistance to pressure request of device, advantageously reduces cost.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the two-way AC/DC convertor of phase three-wire three energy in an embodiment；
Fig. 2 is the circuit theory diagrams of the two-way AC/DC convertor of phase three-wire three energy in an embodiment.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
Fig. 1 is the circuit block diagram of the two-way AC/DC convertor of phase three-wire three energy in an embodiment, this three-phase three
The two-way AC/DC convertor of heat input includes bleeder circuit 110, two-way ac-dc conversion circuit 120, energy storage dress
Put 130 and control circuit (not shown).
Bleeder circuit 110 is for being connected with the first power end.Bleeder circuit 110 includes that at least two is serially connected
And the partial pressure unit 112 that structure is identical.Therefore, the voltage in partial pressure unit 112 is identical, shared first
The input voltage of power end.
Two-way ac-dc conversion circuit 120 is for realizing the bi-directional of energy under the control of control circuit.Double
Multiple setting parallel with one another and the identical two-way ac-dc conversion list of structure is included to ac-dc conversion circuit 120
Unit 122.The quantity of two-way ac-dc conversion unit 122 is identical with the quantity of partial pressure unit 112 and each is two-way
Ac-dc conversion unit 122 connects one to one with a partial pressure unit 112.Due to dividing in partial pressure unit 112
Press less, so that the voltage on each two-way ac-dc conversion unit 122 being attached thereto subtracts the most accordingly
Little, the reliability of system can be improved, and reduce the components and parts in two-way ac-dc conversion unit 122
Resistance to pressure request, parts selection is relatively easy to and cost is relatively low.In the present embodiment, each two-way alternating current-direct current
Converter unit 122 all includes the first end and the second end.First end of two-way ac-dc conversion unit 122 and dividing potential drop
Unit 112 connects, and the second end is then connected with energy storage device 130.Two-way ac-dc conversion unit 122 can pass through
Two-way ac-dc conversion circuit commonly used in the art realizes.
Energy storage device 130 the second end with each two-way ac-dc conversion unit 122 respectively is connected.Energy storage device
130 for receiving the electrical energy for storage of two-way ac-dc conversion unit 122 output, or for carrying to the second end
For input voltage.
The above-mentioned two-way AC/DC convertor of phase three-wire three energy, the bleeder circuit 110 being connected with the first power end
Including the partial pressure unit 112 that multiple structures are identical so that the voltage in each partial pressure unit 112 is identical and
It is respectively less than the input voltage of the first power end, then guarantees that each two-way friendship being connected with partial pressure unit 112 is straight
Pressure-bearing on stream converter unit 122 is less, improves the reliability of equipment, can also reduce two-way friendship simultaneously
In DC converting unit 122, the resistance to pressure request of each components and parts, advantageously reduces cost.
In one embodiment, control circuit is additionally operable to the output electric current to each two-way ac-dc conversion unit 122
Detect, and the output electric current detected is compared.Control circuit is by output bigger two-way of electric current
The electric current of ac-dc conversion unit 122 reduces, so that the output electricity of each two-way ac-dc conversion unit 122
Flow identical, it is ensured that the voltage in each partial pressure unit 112 is in a basic balance.The balance of voltage in partial pressure unit 112
Can avoid bearing in single partial pressure unit 112 bigger voltage stress, and then acceleration device aging even damages
Problem occur.Meanwhile, the balance of voltage in each partial pressure unit 112, it is possible to reduce the power being attached thereto
Harmonic current in factor correcting circuit PFC, improves PFC and line voltage and the uneven of load is adapted to energy
Power, improves the adaptability of electrical network.
Fig. 2 is the circuit theory diagrams of the two-way AC/DC convertor of phase three-wire three energy in an embodiment.See
Fig. 2, in the present embodiment, partial pressure unit and two-way ac-dc conversion unit are two.Bleeder circuit includes
Bus capacitor C1 and C2 that two are connected on dc bus.Voltage on bus capacitor C1 with C2 is identical,
Each undertake the input voltage of half.
Each two-way ac-dc conversion unit all includes transformer T, full bridge rectifier and push-pull circuit.Specifically
Ground, full bridge rectifier includes the first metal-oxide-semiconductor S01, the second metal-oxide-semiconductor S02, the 3rd metal-oxide-semiconductor S03With
4th metal-oxide-semiconductor S04.First metal-oxide-semiconductor S01Drain electrode and the second metal-oxide-semiconductor S02Drain electrode connect after with mother
One end of line capacitance C1 connects.First metal-oxide-semiconductor S01Source electrode also with the 3rd metal-oxide-semiconductor S03Drain electrode even
It is connected with one end of the first winding L1 after connecing.Described second metal-oxide-semiconductor S02Source electrode and the first winding L1
The other end connects.3rd metal-oxide-semiconductor S03Source electrode and the 4th metal-oxide-semiconductor S04Source electrode connect after with bus electricity
The other end holding C1 connects.First metal-oxide-semiconductor S01, the second metal-oxide-semiconductor S02, the 3rd metal-oxide-semiconductor S03With
4th metal-oxide-semiconductor S04Grid be connected with control circuit (not shown).
Push-pull circuit includes the 5th metal-oxide-semiconductor S05With the 6th metal-oxide-semiconductor S06.5th metal-oxide-semiconductor S05Grid
With the 6th metal-oxide-semiconductor S06Grid be connected with control circuit respectively.5th metal-oxide-semiconductor S05Drain electrode and second
One end a of winding L2 connects.6th metal-oxide-semiconductor S06Drain electrode be connected with the other end c of the second winding L2.
5th metal-oxide-semiconductor S05Source electrode and the 6th metal-oxide-semiconductor S06Source electrode connect after be connected with one end of energy storage device.
In the present embodiment, energy storage device is storage capacitor C3.3rd end b and the storage capacitor of the second winding L2
The other end of C3 connects.The 3rd end b of the second winding L2 is positioned at the first end a and second of the second winding L2
The centre of end c.In the present embodiment, push-pull circuit also includes storing stream inductance L.Store stream inductance L and be connected to the
The 3rd section of two winding L2 between b and storage capacitor C1.
In the present embodiment, the first power end is when storage capacitor C3 charges, and charging current is via metal-oxide-semiconductor
It is transmitted.When storage capacitor C3 is to the first power end electric discharge, discharge current is only by circuit
Dead resistance and the parasitic capacitance of metal-oxide-semiconductor are discharged.In other examples, metal-oxide-semiconductor S01～S06
Source electrode and drain electrode between be all parallel with backward dioded and discharge capacity, to form the electric discharge of storage capacitor C3
Loop.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right
The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills
There is not contradiction in the combination of art feature, is all considered to be the scope that this specification is recorded.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But can not therefore be construed as limiting the scope of the patent.It should be pointed out that, for this area
For those of ordinary skill, without departing from the inventive concept of the premise, it is also possible to make some deformation and change
Entering, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended power
Profit requires to be as the criterion.
Claims (9)
1. the two-way AC/DC convertor of phase three-wire three energy, it is characterised in that including:
Bleeder circuit, for being connected the input voltage undertaking described first power end with the first power end；Institute
State bleeder circuit and at least include that two are serially connected and partial pressure unit that structure is identical；
Two-way ac-dc conversion circuit, including the two-way ac-dc conversion list identical with described partial pressure unit quantity
Unit；The structure of each two-way ac-dc conversion unit is identical and setting parallel with one another；Each two-way alternating current-direct current becomes
Change unit and a partial pressure unit connects one to one；Each two-way ac-dc conversion unit all includes first
End and the second end；First end of two-way ac-dc conversion unit is connected with described partial pressure unit, with by described point
Pressure unit provides input voltage to two-way ac-dc conversion unit；
Energy storage device, the second end with each two-way ac-dc conversion unit is connected respectively, to store the second end
Output electric energy or to second end provide input voltage；And
Control circuit, for being controlled described two-way ac-dc conversion circuit.
The two-way AC/DC convertor of phase three-wire three energy the most according to claim 1, it is characterised in that
Each two-way ac-dc conversion circuit all includes transformer, full bridge rectifier and push-pull circuit；
One end of described full bridge rectifier as described two-way ac-dc conversion unit the first end with described point
Pressure unit connects；The other end of described full bridge rectifier is connected with the first winding of described transformer；Described
One end of push-pull circuit is connected with the second winding of described transformer, and the other end of described push-pull circuit is as institute
The second end stating two-way ac-dc conversion unit is connected with described energy storage device.
The two-way AC/DC convertor of phase three-wire three energy the most according to claim 2, it is characterised in that
Described full bridge rectifier includes the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th MOS
Pipe；The drain electrode of described first metal-oxide-semiconductor be connected with the drain electrode of described second metal-oxide-semiconductor after with described partial pressure unit
One end connect；The source electrode of described first metal-oxide-semiconductor be connected with the drain electrode of described 3rd metal-oxide-semiconductor after with described
One end of first winding connects；The source electrode of described second metal-oxide-semiconductor is connected with the other end of described first winding；
The source electrode of described 3rd metal-oxide-semiconductor be connected with the source electrode of described 4th metal-oxide-semiconductor after another with described partial pressure unit
One end connects；Described first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the grid of the 4th metal-oxide-semiconductor
Pole is connected with described control circuit.
The two-way AC/DC convertor of phase three-wire three energy the most according to claim 3, it is characterised in that
Described full bridge rectifier also includes the backward dioded in parallel with metal-oxide-semiconductor；The positive pole of backward dioded with
The source electrode of metal-oxide-semiconductor connects；The negative pole of backward dioded is connected with the drain electrode of metal-oxide-semiconductor.
The two-way AC/DC convertor of phase three-wire three energy the most according to claim 2, it is characterised in that
Described push-pull circuit includes the 5th metal-oxide-semiconductor and the 6th metal-oxide-semiconductor；The grid of described 5th metal-oxide-semiconductor and institute
The grid stating the 6th metal-oxide-semiconductor is connected with described control circuit respectively；The drain electrode of described 5th metal-oxide-semiconductor and institute
The one end stating the second winding connects；The drain electrode of described 6th metal-oxide-semiconductor is connected with the other end of described second winding；
With the one of described energy storage device after the source electrode of described 5th metal-oxide-semiconductor and the source electrode connection of described 6th metal-oxide-semiconductor
End connects；3rd end of described second winding is connected with the other end of described energy storage device；Described second winding
The 3rd end be positioned at the first end and the centre of the second end of described second winding.
The two-way AC/DC convertor of phase three-wire three energy the most according to claim 5, it is characterised in that
Described push-pull circuit also includes storing stream inductance；Described store the stream inductance connection second winding at described transformer
Between 3rd end and described energy storage device.
The two-way AC/DC convertor of phase three-wire three energy the most according to claim 1, it is characterised in that
Described control circuit is additionally operable to detect the output electric current of each two-way ac-dc conversion unit and compare each defeated
Go out size of current；Described control circuit is additionally operable in the two-way ac-dc conversion unit bigger to output electric current
Electric current is adjusted, so that the electric current in each two-way ac-dc conversion unit is identical.
The two-way AC/DC convertor of phase three-wire three energy the most according to claim 1, it is characterised in that
Described partial pressure unit includes bus capacitor.
The two-way AC/DC convertor of phase three-wire three energy the most according to claim 1, it is characterised in that
Described energy storage device includes storage capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293278.1A CN105871243B (en) | 2016-05-04 | 2016-05-04 | The two-way AC/DC convertor of phase three-wire three energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293278.1A CN105871243B (en) | 2016-05-04 | 2016-05-04 | The two-way AC/DC convertor of phase three-wire three energy |
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| Publication Number | Publication Date |
|---|---|
| CN105871243A true CN105871243A (en) | 2016-08-17 |
| CN105871243B CN105871243B (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610293278.1A Expired - Fee Related CN105871243B (en) | 2016-05-04 | 2016-05-04 | The two-way AC/DC convertor of phase three-wire three energy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11088625B1 (en) | 2020-05-26 | 2021-08-10 | Institute Of Electrical Engineering, Chinese Academy Of Sciences | Three-phase CLLC bidirectional DC-DC converter and a method for controlling the same |
| WO2021237503A1 (en) * | 2020-05-26 | 2021-12-02 | 中国科学院电工研究所 | Three-phase cllc bidirectional direct current transformer and control method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11088625B1 (en) | 2020-05-26 | 2021-08-10 | Institute Of Electrical Engineering, Chinese Academy Of Sciences | Three-phase CLLC bidirectional DC-DC converter and a method for controlling the same |
| WO2021237503A1 (en) * | 2020-05-26 | 2021-12-02 | 中国科学院电工研究所 | Three-phase cllc bidirectional direct current transformer and control method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105871243B (en) | 2019-04-16 |
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