CN207518485U - A kind of power supply power cell and power supply - Google Patents
A kind of power supply power cell and power supply Download PDFInfo
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- CN207518485U CN207518485U CN201721491101.9U CN201721491101U CN207518485U CN 207518485 U CN207518485 U CN 207518485U CN 201721491101 U CN201721491101 U CN 201721491101U CN 207518485 U CN207518485 U CN 207518485U
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Abstract
The utility model discloses a kind of power supply power cell and power supply, it is related to rail traction 27.5kV to railway power 10kV converter techniques field, including：Protect circuit, rectification circuit, the first accumulator, the second accumulator, booster circuit and inverter circuit；Protect voltage input end of the input terminal of circuit as power cell; the output terminal of circuit and the input terminal of rectification circuit is protected to connect; the output terminal of rectification circuit is connect with the input terminal of the first accumulator; the output terminal of first accumulator and the input terminal of booster circuit connect; the output terminal of booster circuit is connect with the input terminal of the second accumulator; the input terminal of the output terminal of second accumulator and inverter circuit connects, the voltage output end of the output terminal of inverter circuit as power cell.The utility model improves the power density of power cell, high conversion efficiency, while pumps and given birth to DC voltage, improves the ability of output voltage.
Description
Technical field
The utility model is related to rail traction 27.5kV to railway power 10kV converter techniques field more particularly to a kind of electricity
Source power cell and power supply.
Background technology
It is incrementally increased with the construction scale and design size of Railways In Northwest China, it is following northwest is high and cold, High aititude, dagger-axe
The railway that the areas such as wall, desert are passed through will be more and more, but when place builds railway, public due to uninhabited
The erection of power grid is less, so lacking support of the utility network to Along Railway electric power.
Existing 27.5kV turns three-phase 10kV special power supply devices, using Technics of Power Electronic Conversion technology by rail traction
27.5kV is converted to the uses such as three-phase 10kV supply railway run-throughs circuit, auto block line.But due to by train cross split-phase, get rid of it is negative
The influences such as lotus and driving habits can cause 27.5kV to turn the 27.5kV sides voltage fluctuation of three-phase 10kV special power supply devices, so as to
The busbar voltage of the power cell inside special power supply device is influenced, so as to reduce the output voltage values of power cell, and then
The power density of power cell is reduced, the transfer efficiency that 27.5kV turns three-phase 10kV special power supply devices is caused to reduce.
Invention content
In view of this, the utility model provides a kind of power supply power cell and power supply, and which raises the work(of power cell
Rate density, high conversion efficiency.
The utility model is solved the above problems by following technological means：
A kind of power supply power cell of the utility model, including：Protect circuit, rectification circuit, the first accumulator, the
Two accumulators, booster circuit and inverter circuit；Voltage input end of the input terminal of the protection circuit as power cell, institute
The output terminal for stating protection circuit is connect with the input terminal of the rectification circuit, the output terminal of the rectification circuit and the described first storage
The input terminal connection of energy circuit, the output terminal of first accumulator are connect with the input terminal of the booster circuit, the liter
The output terminal of volt circuit is connect with the input terminal of second accumulator, the output terminal of second accumulator with it is described inverse
Become the input terminal connection of circuit, the voltage output end of the output terminal of the inverter circuit as power cell.
Further, bidirectional thyristor is further included, the output terminal of the inverter circuit is connect with the bidirectional thyristor.
Further, the protection circuit includes first fuse and second fuse.
Further, the rectification circuit includes rectifier bridge.
Further, first accumulator includes the first capacitance, and second accumulator includes the second capacitance.
Further, the booster circuit includes inductance, diode and IGBT pipes, the first end of the inductance and described first
The first end connection of capacitance, the second end of the inductance connect respectively with the grid of the anode of the diode and the IGBT pipes
It connecing, the source electrode of the IGBT pipes is connect with the second end of first capacitance, and the of the cathode of the diode and the second capacitance
One end connects, and the second end of second capacitance is connect with the second end of first capacitance.
Further, the inverter circuit includes inversion H bridges, one end of the first fuse and the second fuse
One end is connect as voltage input end, the other end of the first fuse with the first end of the rectifier bridge, and described second is molten
The other end of disconnected device is connect with the second end of the rectifier bridge, the third end of the rectifier bridge and the first end of first capacitance
Connection, the 4th end of the rectifier bridge connect with the second end of first capacitance, the first end of the inversion H bridges and described the
The first end connection of two capacitances, the second end of the inversion H bridges are connect with the second end of second capacitance, the inversion H bridges
Third end connect with the T1 electrodes of the bidirectional thyristor, the 4th end of the inversion H bridges and the T2 of the bidirectional thyristor
Electrode connects, and the voltage output end of the third end of the inversion H bridges and the 4th end of the inversion H bridges as power cell.
A kind of power supply of the utility model is had the advantages that with power cell：
The utility model provides a kind of power supply power cell, including protection circuit, rectification circuit, the first energy storage electricity
Road, the second accumulator, booster circuit and inverter circuit；Booster circuit is added in power cell, passes through booster circuit
The DC voltage of inverter circuit input terminal is adjusted, when the voltage of the voltage input end of power cell is relatively low, increases booster circuit
The duty ratio of middle control IGBT pipes, so as to increase the DC voltage of inverter circuit input terminal, and then improves the defeated of inverter circuit
Go out voltage range, improve the power density of power cell, high conversion efficiency, while pump and given birth to DC voltage, improve output
The ability of voltage.
A kind of power supply of the utility model, including：Power supply described in isolating transformer, filter unit and above-described embodiment
With power cell, the isolating transformer is connect by the power supply power cell with the filter unit.
Further, the isolating transformer includes multiwinding transformer, the quantity of the power supply power cell be it is multiple,
The multiwinding transformer includes armature winding and multiple secondary windings, and the quantity of the power supply power cell and described time
The quantity of grade winding is identical；The armature winding is connect with single-phase 27.5kV busbares, each secondary windings respectively with it is each
The voltage input end connection of the power supply power cell, after the voltage output end series connection of each power supply power cell with
The input terminal connection of the filter unit, the output terminal of the filter unit is power output end, for exporting 10kV voltages.
A kind of power supply of the utility model has the advantages that：
The utility model provides a kind of power supply, using above-mentioned power supply power cell so that the electricity of power supply final output
Range increase is pressed, improves the transfer efficiency of power supply.
Description of the drawings
Fig. 1 is a kind of schematic block circuit diagram of power supply power cell of the utility model；
Fig. 2 is a kind of circuit diagram of power supply power cell of the utility model；
Fig. 3 is a kind of schematic block circuit diagram of power supply of the utility model.
Specific embodiment
The utility model is described in detail below with reference to attached drawing, as shown in Figure 1：A kind of power supply of the present embodiment is used
Power cell, including：Protect circuit 101, rectification circuit 102, the first accumulator 103, the second accumulator 104, boosting electricity
Road 105 and inverter circuit 106.
Voltage input end of the input terminal of the protection circuit 101 as power cell, the output of the protection circuit 101
End is connect with the input terminal of the rectification circuit 102, the output terminal of the rectification circuit 102 and first accumulator 103
Input terminal connection, the output terminal of first accumulator 103 connect with the input terminal of the booster circuit 104, the liter
The output terminal of volt circuit 105 is connect with the input terminal of second accumulator 104, the output of second accumulator 104
End is connect with the input terminal of the inverter circuit 106, the voltage output of the output terminal of the inverter circuit 106 as power cell
End.
As a further improvement of the above technical scheme, the power supply further includes bidirectional thyristor 107, institute with power cell
The output terminal for stating inverter circuit 106 is connect with the bidirectional thyristor 107.
In the present embodiment, as shown in Fig. 2, the protection circuit 101 includes first fuse FU1 and second fuse FU2.
In the present embodiment, as shown in Fig. 2, the rectification circuit 102 includes rectifier bridge DZ.
In the present embodiment, as shown in Fig. 2, first accumulator 103 includes the first capacitance C1, the second energy storage electricity
Road 104 includes the second capacitance C2.
In the present embodiment, as shown in Fig. 2, the booster circuit 105 includes inductance L1, diode D1 and IGBT pipe Q1, institute
The first end for stating inductance L1 is connect with the first end of the first capacitance C1, the second end of the inductance L1 respectively with two pole
The anode of pipe D1 is connected with the grid of the IGBT pipes Q1, the second end of the source electrode of the IGBT pipes Q1 and the first capacitance C1
Connection, the cathode of the diode D1 connect with the first end of the second capacitance C2, the second end of the second capacitance C2 with it is described
The second end connection of first capacitance C1.
In the present embodiment, as shown in Fig. 2, the inverter circuit 106 includes inversion H bridges K1, the first fuse FU1's
One end and one end of the second fuse FU2 as voltage input end, the other end of the first fuse FU1 with it is described whole
The first end connection of bridge DZ is flowed, the other end of the second fuse FU2 is connect with the second end of the rectifier bridge DZ, described whole
The third end of stream bridge DZ is connect with the first end of the first capacitance C1, the 4th end and first capacitance of the rectifier bridge DZ
The second end connection of C1, the first end of the inversion H bridges K1 are connect with the first end of the second capacitance C2, the inversion H bridges
The second end of K1 is connect with the second end of the second capacitance C2, third end and the bidirectional thyristor of the inversion H bridges K1
T1 electrodes connection, the 4th end of the inversion H bridges K1 is connect with the T2 electrodes of the bidirectional thyristor, and the inversion H bridges
The voltage output end of the third end of K1 and the 4th end of the inversion H bridges K1 as power cell.
It is defeated when power supply power cell specifically, inversion H bridges K1 is connect with the control terminal of IGBT pipes Q1 with controller
When entering DC voltage of the terminal voltage less than setting, it is electric to pass through boosting for the pwm signal duty ratio increase of controller control IGBT pipes Q1
Road 105 improves the DC input voitage of inversion H bridges K1, and then improves the output voltage range of inverter circuit 106.
The utility model provides a kind of power supply power cell, is stored up including protection circuit 101, rectification circuit 102, first
It can circuit 103, the second accumulator 104, booster circuit 105 and inverter circuit 106；Boosting electricity is added in power cell
Road 105 adjusts the DC voltage of inverter circuit 106 input terminal by booster circuit 105, when the voltage input end of power cell
When voltage is relatively low, increase the duty ratio that IGBT pipes are controlled in booster circuit 105, so as to increase the straight of 106 input terminal of inverter circuit
Galvanic electricity pressure, and then the output voltage range of inverter circuit 106 is improved, improve the power density of power cell, transfer efficiency
It is high；In addition, the utility model also adds bidirectional thyristor 107, can quick bypass be realized by bidirectional thyristor 107, carried
The high stability and reliability of power supply power cell, while pump and given birth to DC voltage, improve the ability of output voltage.
A kind of power supply of the utility model, as shown in figure 3, including：Isolating transformer 301, filter unit 302 and above-mentioned
Power supply power cell 303 described in embodiment, the isolating transformer 301 pass through the power supply power cell 303 and institute
Filter unit 302 is stated to connect.
Wherein, the isolating transformer 301 includes multiwinding transformer, and the power supply is with the quantity of power cell 303
Multiple, the multiwinding transformer includes armature winding and multiple secondary windings, and the power supply quantity of power cell 303
It is identical with the quantity of the secondary windings；The armature winding is connect with single-phase 27.5kV busbares, each secondary windings point
It is not connect with each power supply with the voltage input end of power cell 303, the voltage of each power supply power cell 303
It is connect after output terminal series connection with the input terminal of the filter unit 302, the output terminal of the filter unit 302 is exported for power supply
End, for exporting 10kV voltages.
Illustratively, the quantity of the secondary windings and the power supply are 36 with the quantity of power cell 303,
In, the quantity for the power supply power cell 303 of out-put supply A phase lines is 12, for the institute of out-put supply B phase lines
The quantity for stating power supply power cell 303 is 12, for the number of the power supply power cell 303 of out-put supply C phase lines
Measure is 12.
When physical circuit connects, after being connected for all power supplys of out-put supply A phase lines with power cell 303
One output terminal is as A phase line output terminals, another output terminal is as ground terminal；It will be for all electricity of out-put supply B phase lines
Source connected by the use of power cell 303 after an output terminal as B phase line output terminals, another output terminal is as ground wire；It will
For out-put supply C phase lines all power supplys connected by the use of power cell 303 after an output terminal as C phase lines export
End, another output terminal link together as ground terminal, then by all ground terminals.
It should be noted that the filter unit 302 of the utility model can be any hv filtering list of the prior art
Member, details are not described herein.
The utility model provides a kind of power supply, using above-mentioned power supply power cell 303 so that power supply final output
Voltage range increases, and improves the transfer efficiency of power supply；In addition, due in power supply with increasing two-way crystalline substance in power cell 303
Brake tube can realize quick bypass, so as to improve the stability and reliability of power supply entirety by bidirectional thyristor.
The above is the preferred embodiment of the utility model, it is noted that for the ordinary skill of the art
For personnel, under the premise of the utility model principle is not departed from, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the scope of protection of the utility model.
Claims (9)
1. a kind of power supply power cell, it is characterised in that：Including：Protect circuit, rectification circuit, the first accumulator, second
Accumulator, booster circuit and inverter circuit；
Voltage input end of the input terminal as power cell of the protection circuit, the output terminal for protecting circuit with it is described whole
The input terminal connection of current circuit, the output terminal of the rectification circuit connect with the input terminal of first accumulator, and described the
The output terminal of one accumulator is connect with the input terminal of the booster circuit, the output terminal of the booster circuit and the described second storage
The input terminal connection of energy circuit, the output terminal of second accumulator is connect with the input terminal of the inverter circuit, described inverse
Become voltage output end of the output terminal of circuit as power cell.
2. a kind of power supply power cell according to claim 1, it is characterised in that：Bidirectional thyristor is further included, it is described
The output terminal of inverter circuit is connect with the bidirectional thyristor.
3. a kind of power supply power cell according to claim 2, it is characterised in that：It is molten that the protection circuit includes first
Disconnected device and second fuse.
4. a kind of power supply power cell according to claim 3, it is characterised in that：The rectification circuit includes rectification
Bridge.
5. a kind of power supply power cell according to claim 4, it is characterised in that：First accumulator includes the
One capacitance, second accumulator include the second capacitance.
6. a kind of power supply power cell according to claim 5, it is characterised in that：The booster circuit include inductance,
Diode and IGBT pipes, the first end of the inductance are connect with the first end of first capacitance, the second end point of the inductance
Grid not with the anode of the diode and the IGBT pipes is connect, and the of the source electrode of the IGBT pipes and first capacitance
Two ends connect, and the cathode of the diode connect with the first end of the second capacitance, the second end of second capacitance and described the
The second end connection of one capacitance.
7. a kind of power supply power cell according to claim 6, it is characterised in that：The inverter circuit includes inversion H
One end of bridge, one end of the first fuse and the second fuse as voltage input end, the first fuse
The other end is connect with the first end of the rectifier bridge, and the other end of the second fuse and the second end of the rectifier bridge connect
It connects, the third end of the rectifier bridge is connect with the first end of first capacitance, the 4th end and described first of the rectifier bridge
The second end connection of capacitance, the first end of the inversion H bridges are connect with the first end of second capacitance, the inversion H bridges
Second end is connect with the second end of second capacitance, the third end of the inversion H bridges and the T1 electrodes of the bidirectional thyristor
Connection, the 4th end of the inversion H bridges connect with the T2 electrodes of the bidirectional thyristor, and the third end of the inversion H bridges with
Voltage output end of 4th end of the inversion H bridges as power cell.
8. a kind of power supply, it is characterised in that：Including：Isolating transformer, filter unit and claim 1-7 any one of them
Power supply power cell, the isolating transformer are connect by the power supply power cell with the filter unit.
9. a kind of power supply according to claim 8, it is characterised in that：The isolating transformer includes multiwinding transformer,
The quantity of the power supply power cell is multiple, and the multiwinding transformer includes armature winding and multiple secondary windings, and
The quantity of the power supply power cell is identical with the quantity of the secondary windings；
The armature winding is connect with single-phase 27.5kV busbares, each secondary windings respectively with each power supply power
The voltage input end connection of unit, after the voltage output end series connection of each power supply power cell with the filter unit
Input terminal connects, and the output terminal of the filter unit is power output end, for exporting 10kV voltages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721491101.9U CN207518485U (en) | 2017-11-10 | 2017-11-10 | A kind of power supply power cell and power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721491101.9U CN207518485U (en) | 2017-11-10 | 2017-11-10 | A kind of power supply power cell and power supply |
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| Publication Number | Publication Date |
|---|---|
| CN207518485U true CN207518485U (en) | 2018-06-19 |
Family
ID=62537742
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721491101.9U Active CN207518485U (en) | 2017-11-10 | 2017-11-10 | A kind of power supply power cell and power supply |
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| Country | Link |
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| CN (1) | CN207518485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111614274A (en) * | 2020-04-24 | 2020-09-01 | 中国南方电网有限责任公司超高压输电公司广州局 | Converter valve voltage-sharing electrode power supply device for scaling test |
-
2017
- 2017-11-10 CN CN201721491101.9U patent/CN207518485U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111614274A (en) * | 2020-04-24 | 2020-09-01 | 中国南方电网有限责任公司超高压输电公司广州局 | Converter valve voltage-sharing electrode power supply device for scaling test |
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