CN104868586B - Automatic switching power supply circuit for double-way power supply - Google Patents
Automatic switching power supply circuit for double-way power supply Download PDFInfo
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- CN104868586B CN104868586B CN201510309227.9A CN201510309227A CN104868586B CN 104868586 B CN104868586 B CN 104868586B CN 201510309227 A CN201510309227 A CN 201510309227A CN 104868586 B CN104868586 B CN 104868586B
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- 239000003990 capacitor Substances 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims 1
- 230000003111 delayed effect Effects 0.000 abstract 1
- 230000036772 blood pressure Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
The invention discloses an automatic switching power supply circuit for a double-way power supply, and belongs to the field of power supply control. The invention aims at solving a problem that there is no method for supplying a continuous UPS (Uninterrupted Power Supply) environment to a load when a hand-operated generator serves as a standby power supply. The circuit comprises a three-phase circuit breaker QS1, a three-phase circuit breaker QS2, a three-phase thermal relay FR1, a three-phase thermal relay FR2, an AC contactor KM1, a AC contactor KM2, a AC contactor KM3, an intermediate relay K, a transformer T1, a single-phase full-wave bridge-type rectification circuit UR, a CD4541 timer, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a capacitor C2, a voltage-stabilizing diode Vs, and an NPN triode VT. When a main power supply is cut off, the circuit automatically switches to a standby power supply. Moreover, the circuit achieves delayed operation, thereby avoiding misoperation.
Description
Technical field
The present invention relates to a kind of control circuit of Switching power, belongs to power supply control field.
Background technology
In many power supply occasions, such as compact type substation, plant produced workshop, automatically controlled hatching house, mushroom culturing room, agricultural and sideline
Product processing factory and part public place etc., load need continuous non-stop run, it is therefore desirable to the seriality of power supply, and present
People are, as stand-by power supply, when having a power failure, to need people's manual switching electromotor by the way of mostly using electromotor, because
This, centre still can load unpowered for some time, it is impossible to provide continuous unremitting power supply environment to load.
The content of the invention
The invention aims to solve using manual switching electromotor as stand-by power supply, it is impossible to provide continuous to load
A kind of problem of unremitting power supply environment, there is provided double loop power supply automatic switching power supply circuits.
Double loop power supply automatic switching power supply circuits of the present invention, it include three-phase breaker QS1, three-phase breaker QS2,
Three-phase thermorelay FR1, three-phase thermorelay FR2, A.C. contactor KM1, A.C. contactor KM2, A.C. contactor KM3, in
Between relay K, transformator T1, single phase full wave bridge rectifying UR, CD4541 intervalometer, resistance R1, resistance R2, resistance R3,
Resistance R4, electric capacity C1, electrochemical capacitor C2, Zener diode Vs and NPN triode VT；
Main power source of 380V alternating current power supplys A as load, stand-by power supply of 380V alternating current power supplys B as load；
In the supply line of 380V alternating current power supplys A, from power supply to load direction be disposed with three-phase breaker QS1, three
The normally opened main contacts KM1-1 of phase thermorelay FR1 and A.C. contactor KM1；In the supply line of 380V alternating current power supplys B, from electricity
Source to load direction is disposed with the normally opened master of three-phase breaker QS2, three-phase thermorelay FR2 and A.C. contactor KM2 and touches
Point KM2-1；
The normally closed auxiliary contact KM2-4 of A.C. contactor KM1 coils and A.C. contactor KM2 is connected on three-phase thermorelay
Between main power source live wire L1 and zero line N between the normally opened main contacts KM1-1 of FR1 and A.C. contactor KM1；
A.C. contactor KM3 coils, the normally closed auxiliary contact KM1-2 of A.C. contactor KM1 and A.C. contactor KM2 it is normal
Close auxiliary contact KM2-3 and be connected on sending out between the normally opened main contacts KM2-1 of three-phase thermorelay FR2 and A.C. contactor KM2
Motor is powered between live wire L1 and zero line N；
A.C. contactor KM2 coils and auxiliary reclay K normally opened contacts are connected on three-phase thermorelay FR2 and ac contactor
Between generator powered live wire L1 and zero line N between the normally opened main contacts KM2-1 of device KM2；A.C. contactor KM2's is normally opened auxiliary
Contact KM2-2 is helped to be connected in parallel on the two ends of auxiliary reclay K normally opened contacts；
Generator powered live wire L1 between the normally opened main contacts KM2-1 of three-phase thermorelay FR2 and A.C. contactor KM2
One end of the normally opened auxiliary contact KM3-1 of connection A.C. contactor KM3, the normally opened auxiliary contact KM3-1's of A.C. contactor KM3 is another
One end of end connection transformer T1 primary coils, the other end connection zero line N of transformator T1 primary coils；
The secondary coil two ends of transformator T1 connect two ac input ends of single phase full wave bridge rectifying UR respectively,
The one of the cathode power supply outfan connection A.C. contactor KM3 normally closed auxiliary contact KM3-2 of single phase full wave bridge rectifying UR
End, the other end of A.C. contactor KM3 normally closed auxiliary contact KM3-2 connect one end, the CD4541 of auxiliary reclay K coils simultaneously
The positive pole of 14 feet, one end of resistance R4 and electrochemical capacitor C2 of intervalometer IC1,
The other end of resistance R4 is while connect the negative electrode of Zener diode Vs1,12 feet of CD4541 intervalometers, 13 feet and 9
Foot；1 foot of CD4541 intervalometers connects one end of resistance R2, and 2 feet of CD4541 intervalometers connect one end of electric capacity C1, CD4541
3 feet of intervalometer connect one end of resistance R3, the other end connection of the other end, the other end of electric capacity C1 and resistance R3 of resistance R2
Together；8 feet of CD4541 intervalometers connect one end of resistance R1, and the other end of resistance R1 connects the base stage of NPN triode VT,
The colelctor electrode of NPN triode VT connects the other end of auxiliary reclay K coils, and the emitter stage of NPN triode VT connects simultaneously
7 feet of CD4541 intervalometers, 5 feet, 6 feet, 10 feet, the anode of Zener diode Vs1, the negative pole of electrochemical capacitor C2 and single-phase full wave
The negative power supply outfan of bridge rectifier UR, and be grounded.
Advantages of the present invention：Double loop power supply automatic switching power supply circuits of the present invention when main power source has a power failure, automatically
Switch to stand-by power supply, control circuit simple structure, using several discrete electronic components, control performance is stable, with low cost.
The device automatically switches to another power supply when detecting a power supply and going wrong, and by time delay come confirm it is original that
Whether portion's power supply is genuine problematic, it is to avoid maloperation.
Description of the drawings
Fig. 1 is the control principle drawing of double loop power supply automatic switching power supply circuits of the present invention.
Specific embodiment
Specific embodiment one：Present embodiment is illustrated with reference to Fig. 1, double loop power supply described in present embodiment is thrown automatically
Cut power supply circuits, it include three-phase breaker QS1, three-phase breaker QS2, three-phase thermorelay FR1, three-phase thermorelay FR2,
A.C. contactor KM1, A.C. contactor KM2, A.C. contactor KM3, auxiliary reclay K, transformator T1, single-phase full wave bridge-type are whole
Current circuit UR, CD4541 intervalometer, resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1, electrochemical capacitor C2, two pole of voltage stabilizing
Pipe Vs and NPN triode VT；
Main power source of 380V alternating current power supplys A as load, stand-by power supply of 380V alternating current power supplys B as load；
In the supply line of 380V alternating current power supplys A, from power supply to load direction be disposed with three-phase breaker QS1, three
The normally opened main contacts KM1-1 of phase thermorelay FR1 and A.C. contactor KM1；In the supply line of 380V alternating current power supplys B, from electricity
Source to load direction is disposed with the normally opened master of three-phase breaker QS2, three-phase thermorelay FR2 and A.C. contactor KM2 and touches
Point KM2-1；
The normally closed auxiliary contact KM2-4 of A.C. contactor KM1 coils and A.C. contactor KM2 is connected on three-phase thermorelay
Between main power source live wire L1 and zero line N between the normally opened main contacts KM1-1 of FR1 and A.C. contactor KM1；
A.C. contactor KM3 coils, the normally closed auxiliary contact KM1-2 of A.C. contactor KM1 and A.C. contactor KM2 it is normal
Close auxiliary contact KM2-3 and be connected on sending out between the normally opened main contacts KM2-1 of three-phase thermorelay FR2 and A.C. contactor KM2
Motor is powered between live wire L1 and zero line N；
A.C. contactor KM2 coils and auxiliary reclay K normally opened contacts are connected on three-phase thermorelay FR2 and ac contactor
Between generator powered live wire L1 and zero line N between the normally opened main contacts KM2-1 of device KM2；A.C. contactor KM2's is normally opened auxiliary
Contact KM2-2 is helped to be connected in parallel on the two ends of auxiliary reclay K normally opened contacts；
Generator powered live wire L1 between the normally opened main contacts KM2-1 of three-phase thermorelay FR2 and A.C. contactor KM2
One end of the normally opened auxiliary contact KM3-1 of connection A.C. contactor KM3, the normally opened auxiliary contact KM3-1's of A.C. contactor KM3 is another
One end of end connection transformer T1 primary coils, the other end connection zero line N of transformator T1 primary coils；
The secondary coil two ends of transformator T1 connect two ac input ends of single phase full wave bridge rectifying UR respectively,
The one of the cathode power supply outfan connection A.C. contactor KM3 normally closed auxiliary contact KM3-2 of single phase full wave bridge rectifying UR
End, the other end of A.C. contactor KM3 normally closed auxiliary contact KM3-2 connect one end, the CD4541 of auxiliary reclay K coils simultaneously
The positive pole of 14 feet, one end of resistance R4 and electrochemical capacitor C2 of intervalometer IC1,
The other end of resistance R4 is while connect the negative electrode of Zener diode Vs1,12 feet of CD4541 intervalometers, 13 feet and 9
Foot；1 foot of CD4541 intervalometers connects one end of resistance R2, and 2 feet of CD4541 intervalometers connect one end of electric capacity C1, CD4541
3 feet of intervalometer connect one end of resistance R3, the other end connection of the other end, the other end of electric capacity C1 and resistance R3 of resistance R2
Together；8 feet of CD4541 intervalometers connect one end of resistance R1, and the other end of resistance R1 connects the base stage of NPN triode VT,
The colelctor electrode of NPN triode VT connects the other end of auxiliary reclay K coils, and the emitter stage of NPN triode VT connects simultaneously
7 feet of CD4541 intervalometers, 5 feet, 6 feet, 10 feet, the anode of Zener diode Vs1, the negative pole of electrochemical capacitor C2 and single-phase full wave
The negative power supply outfan of bridge rectifier UR, and be grounded.
Single phase full wave bridge rectifying UR is constituted using four diodes.
Operation principle：
In the case that 380V alternating current power supplys A have electricity, as main power source, it is load supplying by 380V alternating current power supplys A, when
When 380V alternating current power supplys A have a power failure, 380V alternating current power supplys B are switched to into operating position using present embodiment scheme, are that load is carried
For working power, allow the load can be with normal work.
During normal work, QS1 and QS2 is closed；Now KM1 coils obtain electric, normally opened main contacts KM1-1 closures, are handed over by 380V
Stream power supply A provides 380V electrical source of power for load；Its normally closed auxiliary contact KM1-2 disconnects simultaneously, and KM3 coils must not be electric, and which is normal
Open auxiliary contact KM3-1 to remain off, then transformator T1 must not be electric, K coils must not be electric, and the normally opened contact of K is remained open
State, then KM2 coils must not be electric, and stand-by power supply current supply circuit is to disconnect, and is not involved in the powered operation to loading.
If 380V alternating current power supplys A have a power failure, KM1 coil losing electricities, normally opened main contacts KM1-1 disconnects, then 380V alternating current power supplys A
No longer 380V electrical source of power is provided for load, while the normally closed auxiliary contact KM1-2 of KM1 recovers closure state, then KM3 coils are obtained
Electricity, then its normally opened auxiliary contact KM3-1 closure, transformator T1 former limits obtain electric, export 6V DC voltages Jing after T1 blood pressure lowerings, UR rectifications
Direct-current working volts are provided for control circuit；When KM3 coils must not be electric, its normally closed auxiliary contact KM3-2 is closure, then become
Depressor T1 primary coils obtain it is electric after, transformator T1 will blood pressure lowering, the alternating current power supply after secondary output buck.
The alternating current power supply exports+6V DC sources Jing after UR rectifications and provides running voltage for CD4541, now the 9 of CD4541
Foot is high level, but the carrying out of the charging with C2, and the level of 12 feet and 13 feet of CD4541 is decreased, through a period of time
Afterwards (i.e. time delay), 12 foot, 13 foot is less than threshold value, and the 8 feet output high level of CD4541 then triggers VT conductings, auxiliary reclay K lines
Enclose electric, its normally-closed contact is closed, then KM2 coils obtain electric, 380V alternating current power supplys B are cut by KM2-2 closure self-lockings, KM2-1 closures
Shift in current supply circuit, power supply is provided for load, do not affect the normal and continuous operation for loading.It is that this little control circuit is generated
Deferred action, that is, after having a power failure several seconds, after confirming as blackout condition, just switch in alternating current power supply B current supply circuit, prevents behaviour by mistake
Make.
Claims (2)
1. double loop power supply automatic switching power supply circuits, it is characterised in that it include three-phase breaker QS1, three-phase breaker QS2,
Three-phase thermorelay FR1, three-phase thermorelay FR2, A.C. contactor KM1, A.C. contactor KM2, A.C. contactor KM3, in
Between relay K, transformator T1, single phase full wave bridge rectifying UR, CD4541 intervalometer, resistance R1, resistance R2, resistance R3,
Resistance R4, electric capacity C1, electrochemical capacitor C2, Zener diode Vs and NPN triode VT；
Main power source of 380V alternating current power supplys A as load, stand-by power supply of 380V alternating current power supplys B as load；
In the supply line of 380V alternating current power supplys A, three-phase breaker QS1, three-phase heat is disposed with from power supply to load direction
The normally opened main contacts KM1-1 of relay FR1 and A.C. contactor KM1；In the supply line of 380V alternating current power supplys B, from power supply extremely
Load direction is disposed with the normally opened main contacts of three-phase breaker QS2, three-phase thermorelay FR2 and A.C. contactor KM2
KM2-1；
The normally closed auxiliary contact KM2-4 of A.C. contactor KM1 coils and A.C. contactor KM2 is connected on three-phase thermorelay FR1
And the main power source live wire L1 and zero line N between the normally opened main contacts KM1-1 of A.C. contactor KM1 between；
A.C. contactor KM3 coils, the normally closed auxiliary contact KM1-2 of A.C. contactor KM1 and A.C. contactor KM2 it is normally closed auxiliary
The electromotor for helping contact KM2-3 to be connected between the normally opened main contacts KM2-1 of three-phase thermorelay FR2 and A.C. contactor KM2
Between power supply live wire L1 and zero line N；
A.C. contactor KM2 coils and auxiliary reclay K normally opened contacts are connected on three-phase thermorelay FR2 and A.C. contactor
Between generator powered live wire L1 and zero line N between the normally opened main contacts KM2-1 of KM2；The normally opened auxiliary of A.C. contactor KM2
Contact KM2-2 is connected in parallel on the two ends of auxiliary reclay K normally opened contacts；
Generator powered live wire L1 connections between the normally opened main contacts KM2-1 of three-phase thermorelay FR2 and A.C. contactor KM2
One end of the normally opened auxiliary contact KM3-1 of A.C. contactor KM3, the other end of the normally opened auxiliary contact KM3-1 of A.C. contactor KM3 connect
Meet one end of transformator T1 primary coils, the other end connection zero line N of transformator T1 primary coils；
The secondary coil two ends of transformator T1 connect two ac input ends of single phase full wave bridge rectifying UR respectively, single-phase
The cathode power supply outfan of full-wave bridge rectifier circuit UR connects one end of A.C. contactor KM3 normally closed auxiliary contact KM3-2, hands over
The other end of stream catalyst KM3 normally closed auxiliary contact KM3-2 connects one end of auxiliary reclay K coils, CD4541 timings simultaneously
The positive pole of 14 feet, one end of resistance R4 and electrochemical capacitor C2 of device IC1；
The other end of resistance R4 connects negative electrode, 12 feet of CD4541 intervalometers, 13 feet and 9 feet of Zener diode Vs1 simultaneously；
1 foot of CD4541 intervalometers connects one end of resistance R2, and 2 feet of CD4541 intervalometers connect one end of electric capacity C1, and CD4541 is fixed
When device 3 feet connect one end of resistance R3, the other end of the other end, the other end of electric capacity C1 and resistance R3 of resistance R2 is connected to
Together；8 feet of CD4541 intervalometers connect one end of resistance R1, and the other end of resistance R1 connects the base stage of NPN triode VT,
The colelctor electrode of NPN triode VT connects the other end of auxiliary reclay K coils, and the emitter stage of NPN triode VT connects simultaneously
7 feet of CD4541 intervalometers, 5 feet, 6 feet, 10 feet, the anode of Zener diode Vs1, the negative pole of electrochemical capacitor C2 and single-phase full wave
The negative power supply outfan of bridge rectifier UR, and be grounded.
2. double loop power supply automatic switching power supply circuits according to claim 1, it is characterised in that single-phase full wave bridge rectifier electricity
Road UR is constituted using four diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510309227.9A CN104868586B (en) | 2015-06-08 | 2015-06-08 | Automatic switching power supply circuit for double-way power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510309227.9A CN104868586B (en) | 2015-06-08 | 2015-06-08 | Automatic switching power supply circuit for double-way power supply |
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| Publication Number | Publication Date |
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| CN104868586A CN104868586A (en) | 2015-08-26 |
| CN104868586B true CN104868586B (en) | 2017-03-22 |
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| CN201510309227.9A Active CN104868586B (en) | 2015-06-08 | 2015-06-08 | Automatic switching power supply circuit for double-way power supply |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545470B (en) * | 2015-12-22 | 2018-01-23 | 赵立增 | A kind of high reliability emergency power supply generating set |
| CN107093924B (en) * | 2016-02-17 | 2023-10-13 | 洛阳申耐电力设备有限公司 | Dual-power delay control dual-interlocking alternating-current stabilized voltage supply box with anti-interference function |
| CN106451753B (en) * | 2016-12-07 | 2023-09-01 | 江苏省镇江船厂（集团）有限公司 | On-line DC power supply device for ship |
| CN107069933B (en) * | 2017-03-23 | 2023-07-25 | 山东钢铁股份有限公司 | Three-way power supply device |
| CN108313234A (en) * | 2018-03-21 | 2018-07-24 | 无锡德林防务装备股份有限公司 | Open type hydraulic system watertight controlling device for doors |
| CN108539846A (en) * | 2018-03-29 | 2018-09-14 | 成都众宜天成科技有限公司 | A kind of automatic switch-over circuit of uninterrupted communication power supply power supply |
| CN108594979B (en) * | 2018-05-29 | 2021-02-02 | 苏州浪潮智能科技有限公司 | Cabinet type server power supply method and power supply device |
| CN109802484A (en) * | 2019-02-01 | 2019-05-24 | 深圳市库马克新技术股份有限公司 | A kind of power circuit of PWM Generator High Voltage Inverter Control System |
| CN110112822B (en) * | 2019-05-21 | 2023-04-28 | 王稳忠 | Intelligent device for uninterrupted power supply by mutual conversion between three-phase dual power supply and phase voltage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201360176Y (en) * | 2009-02-20 | 2009-12-09 | 天津市川铁信号设备有限公司 | Circuit capable of realizing automatic switching between main power source and standby power source |
| CN203984085U (en) * | 2014-07-28 | 2014-12-03 | 国家电网公司 | Uninterrupted power supply control device |
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Inventor after: Li Qingyan Inventor after: Jie Qingwen Inventor after: Wang Zhuo Inventor before: Liu Fagang Inventor before: Zhao Bingliang Inventor before: Li Shuanghou Inventor before: Zhang Jimei Inventor before: Sun Xiangqian Inventor before: Wang Zhuo |
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