CN209016794U - The conversion driving circuit and automatic change-over of automatic change-over - Google Patents
The conversion driving circuit and automatic change-over of automatic change-over Download PDFInfo
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- CN209016794U CN209016794U CN201822121881.9U CN201822121881U CN209016794U CN 209016794 U CN209016794 U CN 209016794U CN 201822121881 U CN201822121881 U CN 201822121881U CN 209016794 U CN209016794 U CN 209016794U
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- relay
- power supply
- driving circuit
- conversion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The utility model discloses a kind of conversion driving circuits of automatic change-over, including power selection circuit, driving circuit, electromagnetic drive mechanism, for the power selection circuit for selecting to supply driving circuit all the way from common power supply and backup power source, driving circuit realizes that power supply is converted for being converted to power supply provided by power selection circuit and electromagnetic drive mechanism being driven to act；The power selection circuit realizes being isolated for common power supply and backup power source by two relays being separately connected with common power supply and backup power source.The invention also discloses a kind of automatic change-overs.Compared with prior art, the utility model realizes the power supply selection of automatic change-over conversion driving circuit using two relays, often, has higher isolation between backup power source, effectively increases the security reliability of system.
Description
Technical field
The utility model relates to automatic change-over more particularly to a kind of conversion driving circuits of automatic change-over.
Background technique
Automatic change-over is according to electric power thus supplied that load circuit is automatically automatic between power supply and backup power source common
The device for switching of switching, is extremely widely applied in low-voltage distribution system at present.The conversion of automatic change-over is driven
Dynamic circuit generally includes the electromagnetic drive mechanism switched for realizing power supply and the driving electricity for controlling electromagnetic drive mechanism
Road.The working power of the conversion driving circuit of existing automatic change-over generally directlys adopt system circuit power supply, i.e., common electricity
Source or backup power source can expire selection another way when wherein power supply is not able to satisfy the demand of electromagnetic drive mechanism all the way
Then the power supply of sufficient electromagnetic drive mechanism demand for control is powered to d-c solenoid by rectifier bridge as working power
To control automatic change-over in conversion common, between backup power source.
Fig. 1 show a kind of conversion driving circuit generallyd use on current automatic change-over.Firstly, common power supply and
Backup power source is respectively connected to normally closed, the normally opened contact of power supply selective relay, is realized and is driven by the switching of power supply selective relay
The selection of dynamic power supply, then, by rectifier bridge drive electromagnet, to realize the conversion of switch.This mode is although simple and practical,
But due to an only group relay contact separation between common power supply and backup power source, electric clearance is small, in contact change-over process
In be also easy to produce electric arc, dielectric properties are lower.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, a kind of automatic change-over is provided
Conversion driving circuit, can be achieved to be effectively isolated between normal backup power source, security reliability is more preferable.
The utility model specifically uses following technical scheme to solve above-mentioned technical problem:
A kind of conversion driving circuit of automatic change-over, including power selection circuit, driving circuit, electromagnetic drive machine
Structure, the power selection circuit for selecting to supply driving circuit all the way from common power supply and backup power source, use by driving circuit
In power supply provided by power selection circuit is converted and drive electromagnetic drive mechanism to act with realize power supply convert；It is described
Power selection circuit realizes common power supply and standby electricity by two relays being separately connected with common power supply and backup power source
The isolation in source.
One of preferably, the power selection circuit include have the first of at least two groups conversion hysteria contact sets after
Electric appliance and at least the second relay of two pairs of normally opened contacts or at least two pairs normally-closed contacts, first two groups of conversions of relay
Two normally opened/normally closed stationary contacts in type contact sets are connect with one in common power supply and backup power source, the first relay two
Two normally closed/normally opened stationary contacts and the second relay two in group conversion hysteria contact sets are to each one of normally opened/normally-closed contact pair
Contact is separately connected, other two contact and common power supply and backup power source of the second relay two to normally opened/normally-closed contact pair
In another connection, two movable contacts in the first two groups of relay conversion hysteria contact sets are as the defeated of power selection circuit
Outlet.
Preferably two, the power selection circuit include have the first of at least two groups conversion hysteria contact sets after
Electric appliance and the second relay at least two groups conversion hysteria contact sets, two in the first two groups of relay conversion hysteria contact sets
A normally opened/normally closed stationary contact is connect with one in common power supply and backup power source, the first two groups of relay conversion hysteria contact sets
In two groups of conversion hysteria contact sets of two normally closed/normally opened stationary contacts and the second relay in two movable contacts be separately connected,
Other one in two normally opened/normally closed stationary contacts and common power supply and backup power source in two two groups of relay conversion hysteria contact sets
A connection, output end of two movable contacts as power selection circuit in the first two groups of relay conversion hysteria contact sets.
Preferably, the first relay is connect with common power supply, and the second relay is connect with backup power source.
Preferably, the electromagnetic drive mechanism includes common switching electromagnet and spare switching electromagnet.
Preferably, the driving circuit includes rectification unit and control switch.
Preferably, the control switch is relay.
Following technical scheme can also be obtained according to identical invention thinking:
A kind of automatic change-over, including as above conversion driving circuit described in any technical solution.
Compared with prior art, technical solutions of the utility model have the advantages that
The utility model realizes the power supply selection of automatic change-over conversion driving circuit using two relays, often,
There is higher isolation between backup power source, effectively increase the security reliability of system.
Detailed description of the invention
Fig. 1 is existing conversion driving circuit；
Fig. 2 is one embodiment of the utility model conversion driving circuit；
Fig. 3 is another embodiment of the utility model conversion driving circuit.
Specific embodiment
The prior art realizes the selection of driving power using single power supply selective relay, due to common power supply and standby electricity
Only have a group relay contact separation between source, electric clearance is small, be also easy to produce electric arc during contact change-over, dielectric properties compared with
It is low.For this problem, the thinking of the utility model is to construct power selection circuit using two relays, to improve normal
With the isolation between power supply and backup power source, lifting system security reliability.
Specifically, the technical solution of the utility model is specific as follows:
A kind of conversion driving circuit of automatic change-over, including power selection circuit, driving circuit, electromagnetic drive machine
Structure, the power selection circuit for selecting to supply driving circuit all the way from common power supply and backup power source, use by driving circuit
In power supply provided by power selection circuit is converted and drive electromagnetic drive mechanism to act with realize power supply convert；It is described
Power selection circuit realizes common power supply and standby electricity by two relays being separately connected with common power supply and backup power source
The isolation in source.
One of preferably, the power selection circuit include have the first of at least two groups conversion hysteria contact sets after
Electric appliance and at least the second relay of two pairs of normally opened contacts or at least two pairs normally-closed contacts, first two groups of conversions of relay
Two normally opened/normally closed stationary contacts in type contact sets are connect with one in common power supply and backup power source, the first relay two
Two normally closed/normally opened stationary contacts and the second relay two in group conversion hysteria contact sets are to each one of normally opened/normally-closed contact pair
Contact is separately connected, other two contact and common power supply and backup power source of the second relay two to normally opened/normally-closed contact pair
In another connection, two movable contacts in the first two groups of relay conversion hysteria contact sets are as the defeated of power selection circuit
Outlet.
Preferably two, the power selection circuit include have the first of at least two groups conversion hysteria contact sets after
Electric appliance and the second relay at least two groups conversion hysteria contact sets, two in the first two groups of relay conversion hysteria contact sets
A normally opened/normally closed stationary contact is connect with one in common power supply and backup power source, the first two groups of relay conversion hysteria contact sets
In two groups of conversion hysteria contact sets of two normally closed/normally opened stationary contacts and the second relay in two movable contacts be separately connected,
Other one in two normally opened/normally closed stationary contacts and common power supply and backup power source in two two groups of relay conversion hysteria contact sets
A connection, output end of two movable contacts as power selection circuit in the first two groups of relay conversion hysteria contact sets.
In above-mentioned technical proposal, it can be common power supply and connect with the first relay, backup power source and the second relay connect
It connects, it can also be on the contrary；Preferably, the first relay is connect with common power supply, and the second relay is connect with backup power source.
The electromagnetic drive mechanism can be the structure converted using an electromagnet come driving power, be also possible to utilize
Common switching electromagnet and spare switching electromagnet respectively drive the structure that common, backup power source closes a floodgate.
Preferably, the driving circuit includes rectification unit and control switch, and the control switch, which can be set, to be rectified
Unit input terminal or output end, as long as can control the driving current on-off in electromagnetic drive mechanism.The control switch can
To be mechanical switch, relay or power switch etc., it is preferred to use relay.
To carry out two optimal technical schemes to the utility model below by two specific embodiments convenient for public understanding
It is further elaborated respectively:
Fig. 2 shows a specific embodiment of the utility model conversion driving circuit, wherein power selection circuit by after
Electric appliance 2K1,2K2 composition, relay 2K3 of the driving circuit by rectification unit 2B1 and as control switch are formed, electromagnetic drive machine
Structure uses single electromagnet.By as shown in Fig. 2, common power input 1A, 1N are respectively connected to two groups of transfer contacts of relay 2K1
Two normally opened stationary contacts, backup power source input terminal 2A, 2N take respective one of two groups of normally opened contact centerings of relay 2K2 respectively
Contact connection, other two contact of two groups of normally opened contacts of relay 2K2 two with two groups of transfer contact of relay 2K1 respectively
Normally closed stationary contact connection, two movable contacts and two groups of normally opened contact centerings of relay 2K3 of two groups of transfer contact of relay 2K1
The connection of a respective contact, other two contact of two groups of normally opened contacts pair of relay 2K3 exchange input with rectification unit 2B1's
End connection, the DC output end of rectification unit 2B1 are connect with electromagnet coil.
Two groups of normally opened contacts of relay 2K2 in the program are to can also be with two groups of normally-closed contacts to substitution, relay
2K2 can also be connect by two normally opened stationary contacts of two groups of transfer contact of relay 2K1 with relay 2K1.
Fig. 3 shows another specific embodiment of the utility model conversion driving circuit, wherein power selection circuit by
Relay 3K1,3K2 composition, relay 3K3,3K4 that driving circuit is controlled it by rectification unit 3B1,3B2 and respectively
Composition, electromagnetic drive mechanism then respectively drive common, backup power source using common switching electromagnet and spare switching electromagnet and close
The structure of lock.As shown in figure 3, common power input 1A, 1N be respectively connected to two groups of transfer contact of relay 3K1 two are normally opened
Stationary contact, backup power source input terminal 2A, 2N are respectively connected to two normally opened stationary contacts of two groups of transfer contact of relay 3K2, relay
Two movable contacts of two groups of transfer contact of device 3K2 are separately connected two normally closed stationary contacts of two groups of transfer contact of relay 3K1, after
Two movable contacts of two groups of transfer contact of electric appliance 3K1 connect with the respective contact in two groups of normally opened contacts pair of relay 3K3
Respective contact while connecing also with two groups of normally opened contact centerings of relay 3K4 is connect, two groups of normally opened contacts of relay 3K3
Pair other two contact connect with the ac input end of rectification unit 3B1, the DC output end of rectification unit 3B1 and common close
The connection of lock electromagnet coil, other two contact of two groups of normally opened contacts pair of relay 3K4 exchange input with rectification unit 3B2's
End connection, the DC output end of rectification unit 3B2 are connect with spare switching electromagnet coil.
Say the control process of conversion driving circuit shown in Fig. 3 below with reference to automatic change-over conversion process
It is bright:
Original state: power supply system is normal, and switch is in common side, and conversion driving circuit is in inoperative shape at this time
State is isolated between common power supply and backup power source by two groups of contacts of 3K1,3K2.
When common power supply is abnormal, automatic transfer switch controller control driving relay 3K2,3K4 movement is standby
The contact for sequentially passing through relay 3K2,3K1,3K4 with power supply, which is output to after rectification unit 3B2 is rectified, drives spare combined floodgate
Electromagnet drives contact action, completes common backup power source switching, then, conversion driving circuit switchs to off working state.
Switch is in prepped side, if common power up, automatic transfer switch controller control driving relay
3K1,3K3 movement, the contact that common power supply sequentially passes through relay 3K1,3K3 are output to rectification unit 3B1 and carry out rectification rear-guard
Dynamic common switching electromagnet, drives contact action, completes common backup power source switching, then, conversion driving circuit switchs to non-work
Make state.
The control process of the conversion driving circuit of the other specific structures of the utility model similarly, to have saved space
See, details are not described herein again.
Claims (8)
1. a kind of conversion driving circuit of automatic change-over, including power selection circuit, driving circuit, electromagnetic drive mechanism,
The power selection circuit for selecting to supply driving circuit all the way from common power supply and backup power source, driving circuit for pair
Power supply provided by power selection circuit is converted and electromagnetic drive mechanism is driven to act to realize that power supply is converted；Its feature exists
In, the power selection circuit by two relays being separately connected with common power supply and backup power source realize common power supply and
The isolation of backup power source.
2. conversion driving circuit as described in claim 1, which is characterized in that the power selection circuit includes having at least two groups
First relay of conversion hysteria contact sets and the second relay at least two pairs of normally opened contacts or at least two pairs normally-closed contacts
Device, in two normally opened/normally closed stationary contacts and common power supply and backup power source in the first two groups of relay conversion hysteria contact sets
One connects, and two normally closed/normally opened stationary contacts in the first two groups of relay conversion hysteria contact sets are with the second relay two to normal
Open/each contact of normally-closed contact pair is separately connected, other two contact of the second relay two to normally opened/normally-closed contact pair
It is connect with another in common power supply and backup power source, two movable contacts in the first two groups of relay conversion hysteria contact sets
Output end as power selection circuit.
3. conversion driving circuit as described in claim 1, which is characterized in that the power selection circuit includes having at least two groups
First relay of conversion hysteria contact sets and the second relay at least two groups conversion hysteria contact sets, the first relay two
Group conversion hysteria contact sets in two normally opened/normally closed stationary contacts connect with one in common power supply and backup power source, first after
Two in two groups of conversion hysteria contact sets of two normally closed/normally opened stationary contacts and the second relay in two groups of conversion hysteria contact sets of electric appliance
A movable contact is separately connected, two normally opened/normally closed stationary contacts in the second two groups of relay conversion hysteria contact sets and common power supply
It is connected with another in backup power source, two movable contacts in the first two groups of relay conversion hysteria contact sets are selected as power supply
Select the output end of circuit.
4. conversion driving circuit as described in claim 1, which is characterized in that the first relay is connect with common power supply, second after
Electric appliance is connect with backup power source.
5. conversion driving circuit as described in claim 1, which is characterized in that the electromagnetic drive mechanism includes common combined floodgate electromagnetism
Iron and spare switching electromagnet.
6. conversion driving circuit as described in claim 1, which is characterized in that the driving circuit includes that rectification unit and control are opened
It closes.
7. conversion driving circuit as claimed in claim 6, which is characterized in that the control switch is relay.
8. a kind of automatic change-over, which is characterized in that including any one of such as claim 1 ~ 7 conversion driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121881.9U CN209016794U (en) | 2018-12-18 | 2018-12-18 | The conversion driving circuit and automatic change-over of automatic change-over |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822121881.9U CN209016794U (en) | 2018-12-18 | 2018-12-18 | The conversion driving circuit and automatic change-over of automatic change-over |
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| Publication Number | Publication Date |
|---|---|
| CN209016794U true CN209016794U (en) | 2019-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822121881.9U Active CN209016794U (en) | 2018-12-18 | 2018-12-18 | The conversion driving circuit and automatic change-over of automatic change-over |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993388A (en) * | 2019-11-29 | 2020-04-10 | 施耐德万高（天津）电气设备有限公司 | Electromagnet driving circuit and method special for automatic transfer switch |
-
2018
- 2018-12-18 CN CN201822121881.9U patent/CN209016794U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110993388A (en) * | 2019-11-29 | 2020-04-10 | 施耐德万高（天津）电气设备有限公司 | Electromagnet driving circuit and method special for automatic transfer switch |
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