CN205489777U - Single phase alternating current redundancy power supply - Google Patents
Single phase alternating current redundancy power supply Download PDFInfo
- Publication number
- CN205489777U CN205489777U CN201620192355.XU CN201620192355U CN205489777U CN 205489777 U CN205489777 U CN 205489777U CN 201620192355 U CN201620192355 U CN 201620192355U CN 205489777 U CN205489777 U CN 205489777U
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- power supply
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Abstract
The utility model belongs to the technical field of redundancy power supply, specifically speaking is a single phase alternating current redundancy power supply. The utility model discloses a redundancy power supply include constant power supply, rectifier bridge circuit and DC the DC module still includes stand -by power supply, relay circuit and afterflow compensating circuit, on constant power supply, stand -by power supply were connected to relay circuit respectively, the rectifier bridge circuit linked to each other with relay circuit, afterflow compensating circuit respectively with rectifier bridge circuit, DC the DC module links to each other, relay circuit includes a set of normally open contact, a set of normally closed contact, group control contact and a set of switch contact, and constant power supply links to each other with a set of normally open contact, group control contact respectively, and stand -by power supply links to each other with a set of normally closed contact, and a set of switch contact is used for connected load. The utility model discloses a redundancy power supply reasonable in design, fast switch over between realization dual supply that can be simple and reliable to can prolong power hold time through rear end compensating circuit, have good popularization and application and worth.
Description
Technical field
This utility model relates to redundant power technical field, a kind of single phase ac redundant power of concrete offer.
Background technology
Along with the development of information technology, present social production manufactures the more and more employing in field Automated condtrol skill
Art, equipment completes manufacturing process by presetting program.Equipment, in running, if power-off suddenly, then sets
Program can not continue executing with, and causes equipment not continue to run with.If program, the production of preamble can not be continued executing with after Tong electricity
Journey meeting forced termination, makes production process go wrong, brings certain loss to enterprise.What is more, and power-off suddenly can cause greatly
The damage of Power operation equipment, brings bigger loss to manufacturer.So redundant power to be used,
The damage that unexpected power-off causes to equipment in case main power source breaks down.Using more redundant power under prior art is direct current
Low pressure redundant power, but to there is problems of galvanic power low for DC low-voltage redundant power, DC low-voltage redundant power
Cost is high, it is loaded down with trivial details to safeguard, commutation brush easily weares and teares needs periodic replacement etc..And exchange redundant power and have comparatively speaking reliably
Durable, low cost, the advantage such as easy to maintenance.Using more for the Redundancy Design of alternating current power supply is UPS
(Uninterruptible Power Supply), i.e. uninterrupted power source.UPS is that (accumulator mostly is plumbic acid maintenance-free electric power storage
Pond) it is connected with main frame, by modular circuits such as main frame inverters, unidirectional current is converted into the system equipment of civil power.
The patent documentation of Patent No. CN103746447A, discloses a kind of redundant AC power automatic switching method.?
In this invention, use two-way ups power and three kinds of power supply redundancys of civil power to power, realize cutting of three-way power by A.C. contactor
Change combination, even if can ensure that 2 road ups powers all break down also do not result in the mode of system dead electricity accident.But this invention
Middle use on line type UPS power supply realizes redundant power supply, and UPS comprises AC/DC module, accumulator, DC/AC inversion module etc., design
Complexity, bulky, and price is the most higher, can increase the use cost of enterprise；Meanwhile, if this on line type UPS power supply and
When mains supply all breaks down, still can not postpone the time of power supply to the device, the unexpected power-off of use equipment can be caused equally,
The operation causing equipment is paralysed, and brings immeasurable loss to enterprise.
Summary of the invention
In order to solve with present on problem, this utility model provides a kind of reasonable in design, can simply and reliably realize
Being switched fast between dual power supply, and a kind of single phase ac redundant power of power supply retention time is extended by rear end compensating.
For achieving the above object, this utility model provides following technical scheme:
A kind of single phase ac redundant power, including conventional power supply, rectifier circuit and DC-DC module, also includes standby electricity
Source, relay circuit and afterflow compensate circuit, and described conventional power supply, stand-by power supply are connected respectively on relay circuit, rectification
Bridge circuit is connected with relay circuit, and afterflow compensates circuit and is connected with rectifier circuit, DC-DC module respectively；Wherein, continue described in
Appliance circuit includes one group of normally opened contact, one group of normally-closed contact, one group of control contact and one group of switch contact, and conventional power supply is respectively
Being connected with one group of normally opened contact, one group of control contact, stand-by power supply and one group of normally-closed contact are connected, and one group of switch contact is for even
Connect load.Described relay circuit also includes a road control signal, and after conventional power supply energising, control signal has input, and then control
The disconnection of normally opened contact processed Guan Bi.
Conventional power supply is connected with the control contact of relay circuit, and after conventional power supply is energized, controlling contact has electricity, controls
Signal has input, the actuating of relay, and normally opened contact closes, the conventional normal work of plant-grid connection load.When event occurs in conventional power supply
After barrier drop, controlling contact does not has electricity, control signal not to input, and normally opened contact disconnects, and normally-closed contact closes, and stand-by power supply connects
Enter the normal work of load.Input by conventional power supply or stand-by power supply is all alternating current, and after relay circuit, alternating current leads to
Over commutation bridge circuit becomes unidirectional current, and DC current compensates circuit to afterflow, and afterflow compensates circuit and can store electric energy.When
Conventional power supply and stand-by power supply all break down power down time, the Switching Power Supply of backend load circuit can detect that circuit voltage subtracts
Little, and by control signal control afterflow compensation circuit to load discharge, extend the retention time of power supply, it is to avoid circuit is unexpected
Power-off, is effectively protected electrical equipment.
As preferably, described afterflow compensate circuit include storage capacitor C1, electric capacity C2, resistance R1, resistance R2, resistance R3,
Diode D1, metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2；The source electrode of metal-oxide-semiconductor Q2 connects rectifier circuit, and the grid of metal-oxide-semiconductor Q2 is used for connecting load
Circuit, the drain electrode of metal-oxide-semiconductor Q2 is connected by the grid of resistance R2 with metal-oxide-semiconductor Q1, and the drain electrode of metal-oxide-semiconductor Q1 is by storage capacitor C1
Connecing rectifier circuit, the source electrode of metal-oxide-semiconductor Q1 and resistance R3 connect rectifier circuit, and electric capacity C2 is serially connected on rectifier circuit, two poles
Pipe D1 is serially connected between the grid of rectifier circuit and metal-oxide-semiconductor Q1, and resistance R1 is serially connected between the grid of metal-oxide-semiconductor Q1 and drain electrode.
DC current can be that storage capacitor C1 charges by diode D1, resistance R1 during afterflow compensates circuit, is stored up by electric energy
There is afterflow to compensate in circuit.When the voltage at electric capacity C2 two ends is less than the voltage at storage capacitor C1 two ends, diode D1 ends,
And metal-oxide-semiconductor Q1 is also at cut-off state, the voltage voltage more than electric capacity C2 two ends at storage capacitor C1 two ends can be kept.When often
With power supply and stand-by power supply all break down power down time, the Switching Power Supply of backend load circuit can detect that circuit voltage subtracts
Little, and by control signal control storage capacitor C1 to load discharge, extend the retention time of power supply, it is to avoid circuit breaks suddenly
Electricity, is effectively protected electrical equipment.As preferably, the relay of described relay circuit is the relay with arc-control device,
Switching time and bearing power can be considered, improve the suitability of power supply.
Compared with prior art, single phase ac redundant power of the present utility model has a beneficial effect highlighted below:
(1) described redundant power is designed with conventional power supply, stand-by power supply and high power relay circuit, high power relay
Device circuit is provided with normally opened contact, normally-closed contact, control contact and control signal, conventional power supply and normally opened contact, control contact
Being connected, stand-by power supply is connected with normally-closed contact, when conventional power failure, can quickly be switched to standby by control signal
With power supply as power supply, it is achieved being switched fast between dual redundant power supply, it is ensured that power supply can be continual for electricity consumption
Equipment is powered；
(2) designing afterflow before DC-DC module and compensate circuit, afterflow compensates circuit and includes a storage capacitor C1,
In conventional power supply or stand-by power supply charging process, storage capacitor C1 can be charged, store electric energy, when conventional power supply and standby
When power supply all breaks down, storage capacitor C1 may proceed to discharge to electrical equipment, and making the power supply retention time increase will by about one time, has
The damage avoiding unexpected power-off that electrical equipment is caused imitated；
(3) when conventional power supply and stand-by power supply all break down power down, the Switching Power Supply of backend load circuit can be examined
Measure circuit voltage to reduce, and control storage capacitor C1 to circuit discharging by control signal, it is possible to storage capacitor C1's
Discharge process is controlled, and prevents storage capacitor C1 from starting immediate current surge excessive, makes the immediate current by load excessive,
Burn out electrical equipment, enhance the suitability of this redundant power.
Accompanying drawing explanation
Fig. 1 is the structural representation of single phase ac redundant power described in the utility model；
Fig. 2 is the schematic diagram of the relay circuit of single phase ac redundant power shown in Fig. 1；
Fig. 3 is the schematic diagram of the afterflow compensation circuit of single phase ac redundant power shown in Fig. 1.
Detailed description of the invention
Below in conjunction with drawings and Examples, a kind of single phase ac redundant power of the present utility model is made the most in detail
Explanation.
In this utility model, in the case of illustrating on the contrary, the noun of locality of use such as " upper and lower, left and right " is usual
Refer to reference to upper and lower, left and right shown in the drawings；It is inside and outside that " inside and outside " refers to relative to the profile of each parts itself.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, single phase ac redundant power of the present utility model is mainly by conventional power supply, standby electricity
Source, relay circuit, rectifier circuit, afterflow compensate circuit and DC-DC module composition.Relay circuit include normally opened contact 1,
2, normally-closed contact 3,4, control contact 5,6,7,8 and one group of control signal of switch contact.Conventional power supply and normally opened contact 1,2 and control
Contact 5,6 processed is connected, and stand-by power supply is connected with normally-closed contact 3,4, and switch contact 7,8 connects load.Control signal controls normally opened
The disconnection of the Guan Bi of contact 1,2.Rectifier circuit is connected with relay circuit.Afterflow compensates circuit and includes storage capacitor C1, electricity
Hold C2, resistance R1, resistance R2, resistance R3, diode D1, metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2.Wherein, the source electrode (S) of metal-oxide-semiconductor Q2 connects whole
Stream bridge circuit, the grid (G) of metal-oxide-semiconductor Q2 is used for connecting load circuit, and the drain electrode (D) of metal-oxide-semiconductor Q2 is by resistance R2 and metal-oxide-semiconductor Q1
Grid (G) be connected, the drain electrode (D) of metal-oxide-semiconductor Q1 connects rectifier circuit by storage capacitor C1, the source electrode (S) of metal-oxide-semiconductor Q1 with
Resistance R3 connects rectifier circuit, and electric capacity C2 is serially connected on rectifier bridge, and diode D1 is serially connected in the grid of rectifier circuit and metal-oxide-semiconductor Q1
Between pole (G), resistance R1 is serially connected between the grid (G) of metal-oxide-semiconductor Q1 and drain electrode (D).Afterflow compensate circuit respectively with rectifier bridge
Circuit, DC-DC module are connected.
The work process of single phase ac redundant power of the present utility model is:
(1) after conventional power supply is energized, controlling contact 5,6 has electricity, control signal to have an input, the actuating of relay, normally opened touches
Point 1,2 Guan Bi, the conventional normal work of plant-grid connection load；
(2) when, after conventional power failure drop, controlling contact 5,6 does not has electricity, control signal not to input, normally opened
Contact 1,2 disconnects, and normally-closed contact 3,4 closes, and stand-by power supply accesses the normal work of load；
(3) alternating current inputted by conventional power supply or stand-by power supply, after relay circuit, is become by rectifier bridge
Unidirectional current, DC current compensates circuit to afterflow, is that storage capacitor C1 charges, as electric capacity C2 two by diode D1, resistance R1
When the voltage of end is less than the voltage at storage capacitor C1 two ends, diode D1 ends, and metal-oxide-semiconductor Q1 is also at cut-off state, keeps
The voltage at storage capacitor C1 two ends is more than the voltage at C2 two ends；
(4) when conventional power supply and stand-by power supply all break down power down, the Switching Power Supply of backend load circuit detects
Circuit voltage reduces, and sends control signal and makes metal-oxide-semiconductor Q2 open, and then opens metal-oxide-semiconductor Q1, controls storage capacitor C1 and puts to load
Electricity, extends the retention time of redundant power with this, it is to avoid the damage that electrical equipment is caused by the unexpected power-off of circuit, effectively protects
Protect electrical equipment.
Embodiment described above, simply this utility model more preferably detailed description of the invention, those skilled in the art
The usual variations and alternatives carried out in the range of technical solutions of the utility model all should be included in protection domain of the present utility model
In.
Claims (2)
1. a single phase ac redundant power, including conventional power supply, rectifier circuit and DC-DC module, it is characterised in that: also wrap
Including stand-by power supply, relay circuit and afterflow and compensate circuit, described conventional power supply, stand-by power supply are connected respectively to relay circuit
On, rectifier circuit is connected with relay circuit, and afterflow compensates circuit and is connected with rectifier circuit, DC-DC module respectively；
Wherein, described relay circuit includes that one group of normally opened contact, one group of normally-closed contact, one group of control contact and one group of switch touch
Point, conventional power supply is connected with one group of normally opened contact, one group of control contact respectively, and stand-by power supply and one group of normally-closed contact are connected, and one
Group switch contact is used for connecting load；Described afterflow compensates circuit and includes storage capacitor C1, electric capacity C2, resistance R1, resistance R2, electricity
Resistance R3, diode D1, metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2；The source electrode of metal-oxide-semiconductor Q2 connects rectifier circuit, and the grid of metal-oxide-semiconductor Q2 is for even
Connecing load circuit, the drain electrode of metal-oxide-semiconductor Q2 is connected by the grid of resistance R2 with metal-oxide-semiconductor Q1, and energy storage is passed through in the drain electrode of metal-oxide-semiconductor Q1
Electric capacity C1 connects rectifier circuit, and the source electrode of metal-oxide-semiconductor Q1 and resistance R3 connect rectifier circuit, and electric capacity C2 is serially connected in rectifier circuit
On, diode D1 is serially connected between the grid of rectifier circuit and metal-oxide-semiconductor Q1, and resistance R1 is serially connected in grid and the leakage of metal-oxide-semiconductor Q1
Between pole.
Single phase ac redundant power the most according to claim 1, it is characterised in that: the relay of described relay circuit is
Relay with arc-control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192355.XU CN205489777U (en) | 2016-03-14 | 2016-03-14 | Single phase alternating current redundancy power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192355.XU CN205489777U (en) | 2016-03-14 | 2016-03-14 | Single phase alternating current redundancy power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205489777U true CN205489777U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620192355.XU Expired - Fee Related CN205489777U (en) | 2016-03-14 | 2016-03-14 | Single phase alternating current redundancy power supply |
Country Status (1)
| Country | Link |
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| CN (1) | CN205489777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114211962A (en) * | 2021-12-08 | 2022-03-22 | 华人运通(江苏)技术有限公司 | Low-voltage power supply management system of electric automobile and electric automobile |
-
2016
- 2016-03-14 CN CN201620192355.XU patent/CN205489777U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114211962A (en) * | 2021-12-08 | 2022-03-22 | 华人运通(江苏)技术有限公司 | Low-voltage power supply management system of electric automobile and electric automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20200314 |