CN205986313U - DC AC invertion power supply system - Google Patents
DC AC invertion power supply system Download PDFInfo
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- CN205986313U CN205986313U CN201620897749.5U CN201620897749U CN205986313U CN 205986313 U CN205986313 U CN 205986313U CN 201620897749 U CN201620897749 U CN 201620897749U CN 205986313 U CN205986313 U CN 205986313U
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Abstract
The utility model relates to a power supply circuit field. The utility model discloses a DC AC invertion power supply system, including a plurality of inverter power circuit, inverter power circuit all includes a DC power supply, a dc -to -ac converter, a transformer and a switch, the input termination of dc -to -ac converter DC power supply, the output termination of dc -to -ac converter the input of transformer, a termination of switch DC power supply, the other end are DC output, the output of a plurality of inverter power circuit's transformer all connects the interchange output through another switch. The utility model discloses can replace traditional UPS's the multistage translative mode of ACDCACDC, system simple structure, reliability and security are high, efficient, the maintenance is simple and convenient, the running cost is low.
Description
Technical field
This utility model belongs to power circuit field, more particularly to a kind of DC-AC inverter system.
Background technology
Petrochemical Enterprises (as petrochemical industry, metallurgy etc.) Controlling Apparatus for Processes (as DSC, ESD, in-line meter, live electromagnetic valve etc.)
Power supply have been used up UPS power supply mode, be AC/DC/AC/DC many unit converting system, by commutator, accumulator, inverter etc.
Core cell forms, and its main element is power electronic devices.This system structure is complicated, has that reliability is low, fault rate is high, effect
Rate is low, operating cost is high, troublesome maintenance the problems such as.In recent years although configuring to UPS type selecting, the method for operation, instrument power module
Etc. being optimized, and strengthen maintenance management work, but instrument power electric power system accident abnormality still happens occasionally, impact life
Produce the long-term operation of device, thus have impact on production efficiency, shortening the life-span of process units, causing larger economic loss.
Utility model content
This utility model purpose is to provide a kind of AC/DC/AC/ that can replace traditional UPS for solving the above problems
The multistage translative mode of DC, system structure is simple, reliability and DC- safe, that efficiency high, easy maintenance, operating cost are low
AC inverter system.
For this reason, the utility model discloses a kind of DC-AC inverter system, including multiple inverter power circuits, described
Inverter power circuit all includes a DC source, an inverter, a transformator and a switch, the input termination institute of described inverter
State DC source, the output of described inverter terminates the input of described transformator, a described unidirectional current of termination of described switch
Source, the other end is DC output end, and the outfan of the transformator of the plurality of inverter power circuit all connects friendship by another switch
Stream outfan.
Further, the quantity of described inverter power circuit is 2, the respectively first inverter power circuit and the second inversion
Power circuit, described first inverter power circuit includes the first DC source, the first inverter, the first transformator and first and opens
Close, described second inverter power circuit includes the second DC source, the second inverter, the second transformator and second switch, described
The input of the first inverter terminates the first DC source, and the output of described first inverter terminates the input of described first transformator
End, described first switch one termination the first DC source, the other end be the first DC output end, described second inverter defeated
Enter termination the second DC source, the output of described second inverter terminates the input of described second transformator, and described second opens
Termination second DC source closing, the other end is the second DC output end, described first transformator and the second transformator defeated
Go out end and ac output end is connect by the 3rd switch.
Further, described first inverter power circuit also includes the 4th switch and the 5th switch, described first inversion
The outfan of device passes through the input that the 4th switch connects described first transformator, and the outfan of described first transformator passes through the 5th
Switch connects the 3rd switch.
Further, described second inverter power circuit also includes the 6th switch and the 7th switch, described second inverter
Outfan pass through the 6th switch and connect the input of described second transformator, the outfan of described second transformator leaves by the 7th
Pass connects the 3rd switch.
Further, described transformator is high impedance isolating transformer.
Further, described switch as miniature circuit breaker.
Advantageous Effects of the present utility model：
This utility model can export redundant direct current high-power (220V/24V/30-400KW), exchange small-power simultaneously
(220V/3-10kVA) power supply.DC source typically carries the loads such as DCS, ESD, and alternating current power supply typically carries live in-line meter and electricity
Magnet valve load, simplifies the AC/DC/AC/DC multi-stage conversion of traditional UPS electric power system, improves power-efficient, can cancel load
Side rectification module, reduces investment outlay.
AC system adopts high impedance isolating transformer, achievable mains side, being effectively isolated and inversion of load side fault
Power supply all pressures arranged side by side, shunting problems.Reliability and safe, easy maintenance, operating cost are low.
Brief description
Fig. 1 is the circuit theory diagrams of this utility model specific embodiment.
Specific embodiment
In conjunction with the drawings and specific embodiments, this utility model is further illustrated.
A kind of DC-AC inverter system, including multiple inverter power circuits, described inverter power circuit is all included always
Stream power supply, an inverter, a transformator and a switch, the input of described inverter terminates described DC source, described inverter
Output terminate described transformator input, described switch one termination described DC source, the other end be DC output end,
The outfan of the transformator of the plurality of inverter power circuit all connects ac output end by another switch.
As shown in figure 1, in this specific embodiment, the quantity of described inverter power circuit is 2, the respectively first inversion electricity
Source circuit and the second inverter power circuit, described first inverter power circuit include the first DC source 1, the first inverter UI1,
First transformator T1 and first switch MCB401, described second inverter power circuit includes the second DC source 2, the second inverter
UI2, the second transformator T2 and second switch MCB406, in the present embodiment, the first transformator T1 and the second transformator T2 are preferably
High impedance isolating transformer, achievable mains side, load side fault be effectively isolated all pressure arranged side by side with inverter, shunting ask
Topic, reliability and safe.First switch MCB401 and second switch MCB406 are preferably miniature circuit breaker, certainly, at it
Can also other machinery contact switch in its embodiment.
The input of described first inverter UI1 terminates the first DC source 1, in this specific embodiment, is 220V unidirectional current
Source, the input of the output described first transformator T1 of termination of described first inverter UI1, the one of described first switch MCB401
Terminate the first DC source 1, the other end connects Direct Current Instrument, the input of described second inverter UI2 for the first DC output end 2
Connect in 2 specific embodiments of the second DC source, be 220V DC source, the output termination of described second inverter UI2 is described
The input of the second transformator T2, termination second DC source 2 of described second switch MCB406, the other end is the second direct current
Outfan 3 connects Direct Current Instrument, and the outfan of described first transformator T1 and the second transformator T2 is connect by the 3rd switch MCB405
Ac output end 5 is exchange instrument power supply.In this specific embodiment, the 3rd switch MCB405 is preferably miniature circuit breaker.
Further, described first inverter power circuit also includes the 4th switch MCB402 and the 5th switch MCB407, this
In embodiment, the 4th switch MCB402 and the 5th switch MCB407 are preferably miniature circuit breaker, and described first inverter UI1's is defeated
Go out the input that end meets described first transformator T1 by the 4th switch MCB402, the outfan of described first transformator T1 passes through
5th switch MCB407 meets the 3rd switch MCB405.
Further, described second inverter power circuit also includes the 6th switch MCB403 and the 7th switch MCB404, this
In embodiment, the 6th switch MCB403 and the 7th switch MCB404 are preferably miniature circuit breaker, and described second inverter UI2's is defeated
Go out the input that end meets described second transformator T2 by the 6th switch MCB403, the outfan of described second transformator T2 passes through
7th switch MCB404 meets the 3rd switch MCB405.
By arranging the 4th switch MCB402, the 5th switch MCB407, the 6th switch MCB403 and the 7th switch MCB404,
System reliability and safety can be made higher.
Work process：First DC source 1 and the second DC source 2 pass through first switch MCB401 and second switch respectively
MCB406 directly powers for Direct Current Instrument, and meanwhile, the first DC source 1 and the second DC source 2 pass through the first inverter respectively
UI1, the first transformator T1 and the second inverter UI2, the second transformator T2 are exchange instrument power supply after being converted to exchange transformation,
When one of DC source power-off or wherein one tunnel are overhauled, can be supplied by another DC source or another road
Electricity, realizes uninterrupted power supply, and reliability is high.
Certainly, in other embodiments, the quantity of inverter power circuit can be 3 or more than 3, increases inverter
The quantity of circuit is that those skilled in the art can realize easily, and this is not describing in detail.
Although specifically show and describe this utility model in conjunction with preferred embodiment, those skilled in the art should
This is understood, in the spirit and scope of the present utility model being limited without departing from appended claims, in form and details
On this utility model can be made a variety of changes, be protection domain of the present utility model.
Claims (6)
1. a kind of DC-AC inverter system it is characterised in that：Including multiple inverter power circuits, described inverter power circuit
All include a DC source, an inverter, a transformator and a switch, the input of described inverter terminates described DC source,
The output of described inverter terminates the input of described transformator, a described DC source of termination of described switch, and the other end is
DC output end, the outfan of the transformator of the plurality of inverter power circuit all connects ac output end by another switch.
2. DC-AC inverter system according to claim 1 it is characterised in that：The quantity of described inverter power circuit
For 2, the respectively first inverter power circuit and the second inverter power circuit, it is straight that described first inverter power circuit includes first
Stream power supply, the first inverter, the first transformator and first switch, described second inverter power circuit include the second DC source,
Second inverter, the second transformator and second switch, input termination first DC source of described first inverter, described first
The output of inverter terminates the input of described first transformator, and the one of described first switch terminates the first DC source, another
Hold as the first DC output end, input termination second DC source of described second inverter, the output of described second inverter
Terminate the input of described second transformator, termination second DC source of described second switch, the other end is the second direct current
Outfan, the outfan of described first transformator and the second transformator passes through the 3rd switch and connects ac output end.
3. DC-AC inverter system according to claim 2 it is characterised in that：Described first inverter power circuit is also
Including the 4th switch and the 5th switch, the outfan of described first inverter passes through the 4th switch and connects the defeated of described first transformator
Enter end, the outfan of described first transformator passes through the 5th switch and connects the 3rd switch.
4. the DC-AC inverter system according to Claims 2 or 3 it is characterised in that：Described second inverter power circuit
Also include the 6th switch and the 7th switch, the outfan of described second inverter passes through the 6th switch and connects described second transformator
Input, the outfan of described second transformator passes through the 7th switch and connects the 3rd switch.
5. DC-AC inverter system according to claim 1 it is characterised in that：Described transformator is isolated for high impedance
Transformator.
6. DC-AC inverter system according to claim 1 it is characterised in that：Described switch as miniature circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620897749.5U CN205986313U (en) | 2016-08-18 | 2016-08-18 | DC AC invertion power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620897749.5U CN205986313U (en) | 2016-08-18 | 2016-08-18 | DC AC invertion power supply system |
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| Publication Number | Publication Date |
|---|---|
| CN205986313U true CN205986313U (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620897749.5U Active CN205986313U (en) | 2016-08-18 | 2016-08-18 | DC AC invertion power supply system |
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| CN (1) | CN205986313U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293779A (en) * | 2020-02-28 | 2020-06-16 | 南方电网科学研究院有限责任公司 | Spare power automatic switching system without circulating current |
-
2016
- 2016-08-18 CN CN201620897749.5U patent/CN205986313U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111293779A (en) * | 2020-02-28 | 2020-06-16 | 南方电网科学研究院有限责任公司 | Spare power automatic switching system without circulating current |
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