CN208241580U - A kind of new type purification power supply based on fractionation DC voltage - Google Patents
A kind of new type purification power supply based on fractionation DC voltage Download PDFInfo
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- CN208241580U CN208241580U CN201820194841.4U CN201820194841U CN208241580U CN 208241580 U CN208241580 U CN 208241580U CN 201820194841 U CN201820194841 U CN 201820194841U CN 208241580 U CN208241580 U CN 208241580U
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Abstract
The utility model relates to a kind of based on the new type purification power supply for splitting DC voltage, high-voltage cascade AC/DC circuit, two-way isolation DC/DC circuit, cascade DC/AC inverter circuit and LCR filtering output circuit including sequentially turning on connection；High-voltage cascade AC/DC circuit forms cascaded topology using H bridge type high-power rectification thyristor controlled series compensation, and every grade of levitating type DC voltage is split as multistage, is pressed using the pressure of equalizing resistance capacitor, is linked into two-way isolation DC/DC circuit；DC voltage after isolation is supplied to cascade DC/AC inverter circuit, energy is obtained from levitating type DC voltage using cascade alternate turns, and output three-phase alternating current supplies the power supplies route such as electricity consumption, through track, stick wire in railway system station after being conveyed to LCR filtering output circuit processing, power supply in Railways Stations, through track power supply, stick wire's power supply is set to be protected, the reliability and power quality for greatly improving power supply, have ensured safe railway operation.
Description
Technical field
The utility model belongs to electric railway technical field more particularly to a kind of based on splitting the novel net of DC voltage
Change power supply.
Background technique
Railway construction route passes through the depopulated zone of several hundred kilometers sometimes, around can without electricity without power grid project in depopulated zone
With, but the circuit load of Along Railway must be protected, and by drawing electricity side-draw be converted into that railway power is suitble to use
Power supply become a kind of good selection, power line cleaner is exactly a kind of electric power conversion apparatus generated in this background.
But traditional power line cleaner introduces voltage, at high cost, manufacturing process that there is transformers frequently with multiwinding transformer
The problems such as difficulty is big, volume is big, weight is big.
Utility model content
To solve the above-mentioned problems in the prior art, the utility model provides one kind by using the high repoussage of H bridge
Thyristor controlled series compensation is flowed directly with power grid connection structure, and the reliability and power quality of railway traction power supply system are high, volume and again
It measures small based on the new type purification power supply for splitting DC voltage.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of new type purification power supply based on fractionation DC voltage, including
High-voltage cascade AC/DC circuit, for being connected to single-phase 27.5kV Traction networks, and carry out AC/DC rectifying conversion and
Split DC voltage；
Two-way isolation DC/DC circuit, input terminal and output end respectively with high-voltage cascade AC/DC circuit and cascade DC/AC
It is electric to be electrically generated several suspension independent direct currents for direct current after splitting for inverter circuit connection, and to by electric energy existing for Traction networks
Quality problems are isolated；
DC/AC inverter circuit is cascaded, for obtaining direct current from two-way isolation DC/DC circuit, and is reverse into three-phase alternating current
Electricity；
LCR filters output circuit, is connected on the output end of cascade DC/AC inverter circuit, filters to three-phase alternating current
Wave processing.
Further, the high-voltage cascade AC/DC circuit is formed with thyristor controlled series compensation using high-power rectification and is cascaded
Topology, high voltage direct current side force pressure to be split as multistage DC voltage, are linked into two-way isolation DC/ using equalizing resistance capacitor
DC circuit.
Further, the two-way isolation DC/DC circuit is by single-phase full-controlled rectifier bridge, high frequency transformer, single-phase full control
Bridge and capacitance composition, and the single-phase full-controlled rectifier bridge, high frequency transformer, single-phase fully controlled bridge sequentially turn on connection, it is described
Capacitance is connected on the output end of single-phase full-controlled rectifier bridge, and the input terminal of the single-phase full-controlled rectifier bridge is connected to height
It arbitrarily downgrades and joins the high voltage direct current side of AC/DC circuit, the output end of the single-phase fully controlled bridge is connected to cascade DC/AC inverter circuit.
Further, the cascade DC/AC inverter circuit is by multiple groups parallel connection type energy storage flat wave capacitor and power cell grade
Connection composition high-voltage inverter, output end are connected to LCR filtering output circuit；And the power cell is by single-phase full control H bridge type
Composition, and the output end of power cell replaces cascade connection.
The beneficial effects of the utility model are:
The utility model through the above technical solutions, can by using H bridge high-voltage rectifying thyristor controlled series compensation directly with electricity
Net connection structure improves the reliability and power quality of railway traction power supply system instead of traditional Industrial Frequency Transformer, and
Volume and weight greatly reduces, at the same complexity that control is realized, topological structure and in terms of have it is obvious
Advantage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram described in the utility model based on the new type purification power supply embodiment for splitting DC voltage；
Fig. 2 is described in the utility model based on two-way isolation DC/ in the new type purification power supply embodiment for splitting DC voltage
The structural schematic diagram of DC circuit and cascade DC/AC inverter circuit；
Fig. 3 is described in the utility model based on LCR filtering output in the new type purification power supply embodiment for splitting DC voltage
The structural schematic diagram of circuit.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
It is as shown in Figure 1 to Figure 3:
New type purification power supply based on fractionation DC voltage described in the utility model embodiment, including sequentially turn on connection
High-voltage cascade AC/DC circuit 1, two-way isolation DC/DC circuit 2, cascade DC/AC inverter circuit 3 and LCR filter output circuit
4.Wherein, the high-voltage cascade AC/DC circuit 1 for being connected to single-phase 27.5kV Traction networks, and carries out AC/DC rectification and becomes
Change and split DC voltage；The two-way isolation DC/DC circuit 2, input terminal and output end are electric with high-voltage cascade AC/DC respectively
Road 1 and cascade DC/AC inverter circuit 3 connect, and it is electric to be electrically generated several suspension independent direct currents for direct current after splitting, and to will lead
Draw the existing power quality problem of net to be isolated；The cascade DC/AC inverter circuit 3, for electric from two-way isolation DC/DC
Road 2 obtains direct current, and is reverse into three-phase alternating current；The LCR filters output circuit 4, is connected to cascade DC/AC inverter circuit
On 3 output end, three-phase alternating current is filtered.
Specific structure can be with are as follows: the high-voltage cascade AC/DC circuit 1 is using high-power rectification thyristor controlled series compensation shape
At cascaded topology, high voltage direct current side forces pressure to be split as multistage DC voltage using equalizing resistance capacitor, is linked into two-way
DC/DC circuit 2 is isolated.The two-way isolation DC/DC circuit 2 is by single-phase full-controlled rectifier bridge 5, high frequency transformer 6, single-phase complete
It controls bridge 7 and capacitance 10 forms, and single-phase full-controlled rectifier bridge 5, high frequency transformer 6, single-phase fully controlled bridge 7 sequentially turn on connection,
The capacitance 10 is connected on the output end of single-phase full-controlled rectifier bridge 5, and the input terminal of the single-phase full-controlled rectifier bridge 5
It is connected to the high voltage direct current side of high-voltage cascade AC/DC circuit 1, it is inverse that the output end of the single-phase fully controlled bridge 7 is connected to cascade DC/AC
Power transformation road 3.The cascade DC/AC inverter circuit 3 is made of multiple groups parallel connection type energy storage flat wave capacitor 8 and the cascade of power cell 9
High-voltage inverter, output end are connected to LCR filtering output circuit 4；And power cell 9 is made of single-phase full control H bridge type, and function
The output end of rate unit 9 replaces cascade connection.
When the new type purification power work described in the utility model based on fractionation DC voltage, high-voltage cascade AC/DC first
Circuit 1 from single-phase 27.5kV Traction networks access High Level AC Voltage, and carry out AC/DC rectifying conversion and split DC voltage after it is defeated
Give two-way isolation DC/DC circuit 2；Then direct current after fractionation is electrically generated several suspensions independently by two-way isolation DC/DC circuit 2
Direct current, and it is delivered to cascade DC/AC inverter circuit 3, while being isolated to by power quality problem existing for Traction networks；
Then cascade DC/AC inverter circuit 3 is reverse into three-phase alternating current after obtaining direct current from two-way isolation DC/DC circuit 2, and conveys
The electric power such as electricity consumption, through track, stick wire in output three-phase alternating current supply railway system station after being handled to LCR filtering output circuit 4
Power supply line makes power supply in Railways Stations, through track power supply, stick wire's power supply be protected, downstream signal, drive a vehicle, early warning of taking precautions against natural calamities,
Scheduling etc. a series of loads can normal reliable, to ensure safe railway operation.
In this way, described in the utility model can be by using H bridge high pressure based on the new type purification power supply for splitting DC voltage
It rectifies thyristor controlled series compensation and directly improves rail traction power supply system instead of traditional Industrial Frequency Transformer with power grid connection structure
The reliability and power quality of system, and volume and weight greatly reduces, at the same realize in control complexity, topological structure and
Cost control etc. has apparent advantage.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (4)
1. a kind of based on the new type purification power supply for splitting DC voltage, it is characterised in that: including
High-voltage cascade AC/DC circuit (1) for being connected to single-phase 27.5kV Traction networks, and carries out AC/DC rectifying conversion and tears open
Divide DC voltage；
Two-way isolation DC/DC circuit (2), input terminal and output end respectively with high-voltage cascade AC/DC circuit (1) and cascade DC/
It is electric to be electrically generated several suspension independent direct currents for direct current after splitting for AC inverter circuit (3) connection, and to will be existing for Traction networks
Power quality problem is isolated；
It cascades DC/AC inverter circuit (3), for obtaining direct current from two-way isolation DC/DC circuit (2), and is reverse into three intersections
Galvanic electricity；
LCR filters output circuit (4), is connected on the output end of cascade DC/AC inverter circuit (3), carries out to three-phase alternating current
Filtering processing.
2. according to claim 1 based on the new type purification power supply for splitting DC voltage, it is characterised in that: the high-voltage cascade
AC/DC circuit (1) forms cascaded topology using high-power rectification thyristor controlled series compensation, and high voltage direct current side uses equal piezoelectricity
Resistance capacitor forces pressure to be split as multistage DC voltage, is linked into two-way isolation DC/DC circuit (2).
3. according to claim 2 based on the new type purification power supply for splitting DC voltage, it is characterised in that: it is described it is two-way every
From DC/DC circuit (2) by single-phase full-controlled rectifier bridge (5), high frequency transformer (6), single-phase fully controlled bridge (7) and capacitance (10) group
At, and the single-phase full-controlled rectifier bridge (5), high frequency transformer (6), single-phase fully controlled bridge (7) sequentially turn on connection, the blocking electricity
Hold (10) to be connected on the output end of single-phase full-controlled rectifier bridge (5), and the input terminal connection of the single-phase full-controlled rectifier bridge (5)
To the high voltage direct current side of high-voltage cascade AC/DC circuit (1), it is inverse that the output end of the single-phase fully controlled bridge (7) is connected to cascade DC/AC
Power transformation road (3).
4. according to claim 3 based on the new type purification power supply for splitting DC voltage, it is characterised in that: the cascade DC/
AC inverter circuit (3) forms high-voltage inverter by multiple groups parallel connection type energy storage flat wave capacitor (8) and power cell (9) cascade,
Output end is connected to LCR filtering output circuit (4)；And the power cell (9) is made of single-phase full control H bridge type, and power list
The output end of first (9) replaces cascade connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820194841.4U CN208241580U (en) | 2018-02-05 | 2018-02-05 | A kind of new type purification power supply based on fractionation DC voltage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820194841.4U CN208241580U (en) | 2018-02-05 | 2018-02-05 | A kind of new type purification power supply based on fractionation DC voltage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114867184A (en) * | 2022-06-15 | 2022-08-05 | 中国科学院近代物理研究所 | Compact multi-ion accelerator treatment device and application thereof |
-
2018
- 2018-02-05 CN CN201820194841.4U patent/CN208241580U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114867184A (en) * | 2022-06-15 | 2022-08-05 | 中国科学院近代物理研究所 | Compact multi-ion accelerator treatment device and application thereof |
| CN114867184B (en) * | 2022-06-15 | 2023-03-14 | 中国科学院近代物理研究所 | Compact multi-ion accelerator treatment device and application thereof |
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