CN104716735B - A kind of control circuit of simple type double-power supply switching device - Google Patents
A kind of control circuit of simple type double-power supply switching device Download PDFInfo
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- CN104716735B CN104716735B CN201510156939.1A CN201510156939A CN104716735B CN 104716735 B CN104716735 B CN 104716735B CN 201510156939 A CN201510156939 A CN 201510156939A CN 104716735 B CN104716735 B CN 104716735B
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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 invention discloses a kind of control circuit of simple type double-power supply switching device it is characterised in that：When conventional power supply is normal, stand-by power supply power supply circuits dead electricity does not work；The N phase of conventional power supply will not be connected any time with the N phase of stand-by power supply, it is to avoid two-way voltage is ganged up and current direction energy imbalance is occurred, and leads to the residual current circuit breaker malfunction of front end.Using replacing transformator, wherein, conventional power supply A phase no-voltage detection circuit doubles as conventional power-supplying circuit to conventional power supply three-phase pressure loss testing circuit capacity voltage dropping circuit, makees logic control circuit using gate circuit and 555 timer integrated circuit, replaces microcontroller.The present invention mainly has the advantage that：Whole circuit structure is simple, science is ingenious, and reliability is high, EMC performance is good, small power consumption；Not only good economy performance, cost performance are high, and easy to manufacture, maintenance is also convenient for, and maintenance cost is low, energy-conserving and environment-protective, has larger promotional value.
Description
Technical field
The present invention relates to dual-power transfer switch appliance field, particularly to a kind of electronics of dual-power transfer switch electrical equipment
Control circuit.
Background technology
The important events of some low-voltage distributions, for reducing the economic loss causing because of power failure, are powered using two road power supplys：
Conventional, standby or standby each other, this two roads power supply can be all that electrical network is powered, and Ye Ke mono- tunnel powers for electrical network, and a road is diesel oil
Generator powered.When in power supply process, barrier is unable to normal power supply to a road power supply for some reason, its load is switched to another road
The device of power supply is referred to as dual-power transfer switch electrical equipment, abbreviation TSE, is intended to referred to as double-power supply switching device, its load is cut automatically
The device changing to another road power supply is referred to as automatic transfer switching electric appliance, abbreviation ATSE.
At present, ATSE is typically made up of automatic change-over body and control circuit two parts, is used primarily in and does not allow to stop
The important place of electricity.Automatic change-over body mainly by two choppers as master switch, prevent two breaker mechanicals
Interlocking mechanism and being made up of the machinery conversion mechanism that two-way reducing motor drives, control circuit is mainly core by microcontroller
Intelligent control circuit composition.When the conventional supply voltage that control circuit detects the current power supply of load occurs more than permission
During deviation, ATSE automatically switches to another stand-by power supply and powers it is ensured that load supplying is unlikely to interrupt for a long time；When conventional
When power up is normal, ATSE can automatically switch back into conventional power supply and power it is also possible to continue to continue power supply by current stand-by power supply,
Proper time is manual again or remote control switches back into conventional power supply and powers.
ATSE with intelligent control circuit is commonly referred to as intelligent duplicate power supply conversion equipment, its master switch nominal operation
, typically in more than 100A device for switching, its price is also of a relatively high for electric current, is commonly used in the larger unit of ratio, such as hospital, airport
Etc. occasion.But the occasion in some small ranges, the place such as market as little in some, little company, in its unit interval, power consumption is relative
Less, as long as with the higher small-sized economical double-power supply switching device of cost performance, such as master switch rated operational current
For the miniature circuit breaker in the range of 16A ~ 100A, also little to the monitoring requirement of supply voltage, general only need to monitor conventional
The no-voltage faults such as the phase shortage of power supply.
Intelligent duplicate power supply conversion equipment control circuit is complicated, and manufacturing cost is high.As in control circuit at least provided with being provided with
There is provided working power two-way power supply for whole circuit, pass through two mains transformer respectively by conventional power supply and stand-by power supply blood pressure lowering
Afterwards, in parallel again by rectification, so need two-way power supply to power simultaneously, cause the waste of power supply.Monitoring duplex feeding power supply electricity
The circuit of pressure, general decompression device is used as by miniature transformer power-frequency voltage is dropped in proportion compare lower security control source
Carry out voltage monitoring to control circuit voltage detecting end.General two-way detecting voltage by three phase needs 6 miniature transformers, small-sized change
Depressor is inductive load, and because it exists, volume is big, takies the larger space of controller, is unfavorable for controller miniaturization；And
And also there is the defects such as miniature transformer harmonic wave is high, radiation height, high cost, power consumption are big, easily burn out.For another example microcontroller,
In the severe electric room environment of working condition, electromagnetic interference is serious, be easily damaged, easy malfunction, reliability relatively poor, Er Qiexu
Program, development difficulty is big, difficult in maintenance.
Content of the invention
There is drawbacks described above in the control circuit for solving existing simple type double-power supply switching device, the present invention provides a kind of knot
The control circuit of the high simple type double-power supply switching device of structure simple science small power consumption, low cost, reliability.
For achieving the above object, the scheme that the present invention takes is：A kind of control circuit of simple type double-power supply switching device,
It include conversion motor in the machinery conversion mechanism of double-power supply switching device and travel switch it is characterised in that：It is also
Including conventional power supply three-phase pressure loss testing circuit, signal transformation circuit, conversion motor control circuit, conventional go to standby time delay electricity
Road, the conventional power-supplying circuit powered for aforementioned four circuit, standby go to conventional delay circuit, go to conventional prolonging for standby
When the stand-by power supply power supply circuits powered of circuit；Wherein, commonly use and go to standby delay circuit, standby go to conventional delay circuit extremely
It is provided with one group of gate-controlled switch with normally open contact and normally closed interlock less, conversion motor control circuit is normally opened tactile at least provided with two groups of bands
Head and the gate-controlled switch of normally closed interlock；Conventional power-supplying circuit is connected with the A phase in conventional power supply, conventional power supply three-phase pressure loss
The outfan of testing circuit is connected with the input of signal transformation circuit, conventional input and the conversion going to standby delay circuit
The control signal of circuit for controlling motor is connected with the outfan of signal transformation circuit；The gate-controlled switch of conversion motor control circuit
The normally closed interlock that switched by one stroke of the first common port be connected with conventional power supply A phase, conversion motor control circuit controlled
The normally closed interlock that second common port of switch is switched by one stroke is connected with the A phase of stand-by power supply, correspondingly, the first common port
Corresponding first normally open contact and conversion motor rotate forward control end and are connected, corresponding second normally closed interlock of the second common port and conversion
Motor reversal control end is connected, and the input of stand-by power supply power supply circuits is connected with the second normally closed interlock；Commonly use and go to standby prolonging
When the normally open contact of circuit be connected with the N phase of conventional power supply, the standby normally open contact going to conventional delay circuit and stand-by power supply
N be connected, the common port of the conventional common port and conversion motor going to standby delay circuit is connected；Standby go to conventional time delay
The common port of circuit is connected with the common port of conversion motor, or the standby common port going to conventional delay circuit is gone to standby
The normally closed interlock of conventional delay circuit is connected.Wherein it is desired to special instruction, the standby common port going to conventional delay circuit
It is connected with the standby normally closed interlock going to conventional delay circuit and can ensure that the N phase of the N phase of conventional power supply and stand-by power supply will not be with
When be connected to the common port of conversion motor, it is to avoid two-way voltage is ganged up and current direction energy imbalance is occurred, and leads to front end
Residual current circuit breaker malfunction.
Further illustrating as such scheme, when conventional power supply occurs the decompression phenomenons such as phase shortage, conventional power supply three-phase loses
Pressure testing circuit sends abnormal signal, after signal transformation circuit Shape correction, is sent to conversion motor control circuit, conventional turns
To standby delay circuit, conversion motor control circuit and the conventional gate-controlled switch action going to standby delay circuit, gate-controlled switch
Whole normally open contacts disconnect, conversion motor is off with the electrical connection of conventional power supply；Stand-by power supply power supply circuits
All connect with the A circuitry phase of stand-by power supply with conversion motor, start to go to conventional delay circuit and power for standby, conventional time delay
Circuit is powered after time delay, connects whole normally open contacts of the gate-controlled switch during conventional delay circuit is powered, that is, conversion motor with standby
Connected with the N circuitry phase of power supply, conversion motor is powered by the A phase of stand-by power supply, and conversion motor action, by conventional mains side
Chopper disconnects, by the breaker closing of standby electricity source, after the chopper of standby electricity source is in closure state, with standby electricity
The normally closed interlock of the travel switch that the A phase in source is connected disconnects, and conversion motor dead electricity is slack, and load is powered by stand-by power supply.
When conventional power up is normal, conventional power supply three-phase pressure loss testing circuit sends normal signal, at signal transformation circuit shaping
After reason, be sent to conversion motor control circuit, conventional go to standby delay circuit, conversion motor control circuit and conventional go to standby
With the gate-controlled switch sequencing action of delay circuit, conversion motor is disconnected with the A phase of stand-by power supply and N phase, meanwhile, standby electricity
Source power supply circuits are also disconnected with the A phase of stand-by power supply, stop going to conventional delay circuit and powering to standby, conversion motor controls electricity
Road is connected with whole normally open contacts of the conventional gate-controlled switch going to standby delay circuit, and conversion motor is electric with conventional power supply
Connect in an ON state；Conversion motor action, the chopper of standby electricity source is disconnected, and the chopper of conventional mains side is closed
Lock, after the chopper of conventional mains side is in closure state, the normally closed interlock of the travel switch being connected with the A phase of conventional power supply
Disconnect, conversion motor dead electricity is slack, load is powered by conventional power supply.Therefore when conventional power supply normal power supply, whole circuit
Only conventional power-supplying circuit provides working power, and stand-by power supply power supply circuits are in off-position it is ensured that two-way power supply
Do not interfere with each other, increased the independence of conventional power supply and stand-by power supply, decrease the working time of related electronic devices, not only
Save electric energy, improve the reliability of system, also improve the service life of electronic device.
Aforementioned conventional power supply three-phase pressure loss testing circuit includes its input and is connected respectively to each corresponding conventional power supply three
The conventional power supply A phase no-voltage detection circuit of phase, conventional power supply B phase no-voltage detection circuit and conventional power supply C phase decompression detection electricity
Road；Wherein, conventional power supply A phase no-voltage detection circuit doubles as conventional power-supplying circuit, conventional power supply A phase no-voltage detection circuit bag
Include the A phase capacity voltage dropping circuit being sequentially connected in series, A commutating phase mu balanced circuit；Conventional power supply B phase no-voltage detection circuit includes going here and there successively
The B phase capacity voltage dropping circuit of connection, B commutating phase mu balanced circuit and B phase photoelectric isolating circuit；Conventional power supply C phase decompression detection electricity
Road includes C phase capacity voltage dropping circuit, C commutating phase mu balanced circuit and the C phase photoelectric isolating circuit being sequentially connected in series；Wherein, A phase
Regulator rectifier circuit, B phase photoelectric isolating circuit, C phase photoelectric isolating circuit and aforesaid signal transformation circuit are gone here and there successively in front and back
Connection.Due to A commutating phase mu balanced circuit, B phase photoelectric isolating circuit, C phase photoelectric isolating circuit and aforesaid signal transformation circuit
Tandem is successively, as long as there being conventional power supply to have a phase decompression, signal transformation circuit just cannot get normal signal and sends
Abnormal signal.Conventional power supply A phase no-voltage detection circuit ingenious as conventional power-supplying circuit, during using A phase decompression, B phase light
Electric isolating circuit, C phase photoelectric isolating circuit cannot get working power and cannot send the phenomenon of signal, saves one and is often directed to
With the A phase photoelectric isolating circuit of power supply A phase, for the weight reducing of whole control circuit, save electronic device, reduce cost.Use
Capacity voltage dropping circuit, as potential circuit, because electric capacity is idle device, does not consume active power during work, does not generate heat yet, phase
Safer to transformator, small volume, pin is few, easily installs, and also more saves controller space, meanwhile, cost is also less expensive, has
Beneficial to energy-conserving and environment-protective.
Preferably, aforementioned A phase capacity voltage dropping circuit, B phase capacity voltage dropping circuit and C phase capacity voltage dropping circuit all include by can
The non-polar condenser of resistance to power frequency high voltage and the discharge resistance in parallel with this non-polar condenser composition；Capacity voltage dropping circuit module
Input is simultaneously connected to varistor.
More specifically, aforementioned non-polar condenser is the CBB electric capacity of 240V ~ 1000V or safety electric capacity for pressure voltage.
The use of capacity voltage dropping circuit, because electric capacity is capacitive load, its EMC performance is good, in theory its not power consumption,
Power consumption becomes very low, and harmonic wave is little.CBB electric capacity or safety electric capacity are cheap, and security performance is high.
Its principle of capacity voltage dropping circuit actually utilizes capacitive reactance current limliting, and its Current calculation formula is illustrated below.Example
As being connected to the alternating voltage of 220V/50Hz as control voltage, when capacitance C is 1uF, if can using all wave rectification
The electric current obtaining（Meansigma methodss）For：I(AV)=0.89×V/Zc=0.89×220×2×∏×f×C =0.89×220×2×
3.14×50×C=60000C =60000×0.000001=0.06A=60mA.The capacity of reasonable selection non-polar condenser, electricity
Road gets final product normal work.
Preferably, aforementioned A commutating phase mu balanced circuit, B commutating phase mu balanced circuit, C commutating phase mu balanced circuit and stand-by power supply
Power supply circuits all include integrated full-wave rectification bridge and the filter capacitor located at full-wave rectification bridge outfan, full-wave rectification bridge
Outfan is provided with the mu balanced circuit that voltage regulation resistance and Zener diode are composed in series, wherein, A commutating phase mu balanced circuit and standby electricity
Zener diode in the power supply circuits of source is 12V Zener diode, B commutating phase mu balanced circuit and C commutating phase voltage stabilizing for voltage stabilizing value
Zener diode in circuit is 5V Zener diode for voltage stabilizing value；A commutating phase circuit output end of pressure-stabilizing is followed by voltage stabilizing value
It is conventional power supply three-phase pressure loss for the secondary pressure circuit of 5V integrated regulator and filter capacitor composition, this secondary pressure circuit
Testing circuit, signal transformation circuit, conversion motor control circuit, conventional go to standby delay circuit working power is provided；B phase light
Electric isolating circuit and C phase photoelectric isolating circuit are and are respectively made up of a photoelectrical coupler, and this two photoelectrical couplers are integrated
Double optocoupler integrated circuits of model PC521-2 of two photoelectrical couplers, its input respectively with B commutating phase voltage stabilizing electricity
The outfan of the Zener diode in road and C commutating phase mu balanced circuit connects, and pull-up is passed through in the c pole of first module photoelectrical coupler
Resistance is connected with the outfan of 5V integrated regulator, the e pole of first module photoelectrical coupler and second unit photoelectrical coupler
C pole connect, the e pole of second unit photoelectrical coupler is connected with signal transformation circuit input.
Aforementioned signal shaping circuit is mainly composed in series by the NAND gate circuit with Schmidt trigger for the two-stage, each with non-
The input of gate circuit connects, and is parallel with drop-down between the input of first order NAND gate circuit and conventional power ground line
Resistance and ground capacity.The NAND gate circuit of Schmidt trigger, because being provided with voltage pulsation window, can effectively prevent conventional power supply
The short-time fluctuations of voltage cause conversion motor frequent switching, the power supply to load for the impact.
Gate-controlled switch in aforementioned conversion motor control circuit is that the power supply being provided with two groups of normally closed normal open switch contacts selects
Relay, the common port of the common port of its first group of switch contact and second group of switch contact corresponds respectively to conversion motor control
First common port of the gate-controlled switch of circuit and the second common port；Correspondingly, the normally open contact of its first group of switch contact and
The normally closed interlock of two groups of switch contacts corresponds respectively to the first normally open contact and the second normally closed interlock, and power supply selective relay is by one
Individual NPN type power supply selects audion to drive, and this power supply selects the b pole of audion to be connected to the of signal transformation circuit by resistance
Two grades of NAND gate circuit outfans；The input of stand-by power supply power supply circuits is connected with the normally closed interlock of second group of switch contact.
Aforementioned commonly using goes to the conventional charge-discharge circuit that standby delay circuit includes being made up of potentiometer and capacitances in series, by
The logic circuit of the composition of the NAND gate circuit with Schmidt trigger of two series connection, and with one group of normally open contact and normally closed
The conventional N phase control relay of contact；Wherein, the input of each NAND gate circuit connects, in conventional charge-discharge circuit
Potentiometer input and power supply select the b of audion to be extremely connected, this electric capacity is connected with conventional power ground line, conventional discharge and recharge
Potentiometer output in circuit is connected with the input of first order NAND gate circuit；Conventional N phase control relay is by a NPN
Type is commonly used N phase control audion and is driven, and the b pole of this conventional N phase control audion is connected to the of logic circuit by a resistance
Two grades of NAND gate circuit outfans；The normally open contact of conventional N phase control relay corresponds to commonly use before going to standby delay circuit
The normally open contact stated, the common port of conventional N phase control relay corresponds to the conventional common port going to standby delay circuit.
Aforementioned standby go to conventional delay circuit include by fixed resister, potentiometer and electric capacity be sequentially composed in series standby
With charge-discharge circuit, the logic drive circuit being made up of 555 timer integrated circuit, and carry one group of normally opened and normally closed interlock
Standby N phase control relay；Wherein, the pin 2 of 555 timer integrated circuit and pin 6 connect rear and standby charge and discharge
The outfan of the potentiometer in circuit is connected, and the fixed resister input in standby charge-discharge circuit is powered with stand-by power supply
The cathode output end of the full-wave rectification bridge in circuit is connected, in the pin 1 and standby charge-discharge circuit of 555 timer integrated circuit
Electric capacity one end be connected with the negative pole of the full-wave rectification bridge in stand-by power supply power supply circuits, the pin 4 of 555 timer integrated circuit
It is connected with the cathode output end of the full-wave rectification bridge in stand-by power supply power supply circuits with pin 8；Standby N phase control relay
Driven by the pin 3 of 555 timer integrated circuit by one, that is, coil one end of standby N phase control relay and stand-by power supply supply
The cathode output end of the full-wave rectification bridge in circuit is connected, the other end is connected with the pin 3 of 555 timer integrated circuit；Standby
Correspond to standby go to the aforesaid normally open contact of conventional delay circuit, standby N phase control with the normally open contact of N phase control relay
The common port of relay corresponds to the standby common port going to conventional delay circuit delay circuit.
Aforementioned control circuit also includes indicating the state instruction the electricity whether chopper as master switch is in "on" position
Road, condition indication circuit is connected with travel switch.
From the foregoing, it will be observed that the present invention mainly has the advantage that：Whole circuit structure is simple, science is ingenious, and reliability is high, EMC
Performance is good, small power consumption；Not only good economy performance, cost performance are high, and easy to manufacture, maintenance is also convenient for, and maintenance cost is low, energy-conserving and environment-protective,
There is larger promotional value.
Brief description
Fig. 1 is the schematic block circuit diagram of the present invention.
Fig. 2 is conventional power supply three-phase pressure loss testing circuit theory diagram.
Fig. 3 is the circuit theory diagrams of Fig. 2.
Fig. 4 is the circuit theory diagrams of the primary control circuit part of the present invention.
Fig. 5 is the circuit theory diagrams of condition indication circuit.
Main Reference label declaration：The detection of power supply three-phase pressure loss commonly used by 11 conversion motor 12 travel switch 13
Circuit 131 A phase no-voltage detection circuit, 1311 A phase capacity voltage dropping circuit, 1312 A commutating phase mu balanced circuits 132 are normal
With power supply B phase no-voltage detection circuit 1321 B phase capacity voltage dropping circuit, 1322 B commutating phase mu balanced circuit 1323 B phase light
It is steady that electric isolating circuit 133 commonly uses power supply C phase no-voltage detection circuit 1331 C phase capacity voltage dropping circuit, 1332 C commutating phases
16 conventional turns of volt circuit 1333 C phase photoelectric isolating circuit 14 signal transformation circuit 15 conversion motor control circuit
Commonly use to standby delay circuit 17 that power-supplying circuit 18 is standby to be gone to conventional delay circuit 19 stand-by power supply and power
Circuit 20 condition indication circuit.
Specific embodiment
Below in conjunction with the accompanying drawings and preferred embodiment, the present invention and its Advantageous Effects are carried out further specifically
Bright.
Referring to Fig. 1 ~ Fig. 5, the control circuit of simple type double-power supply switching device includes the machine located at double-power supply switching device
Conversion motor 11 in tool shifter and travel switch 12, conventional power supply three-phase pressure loss testing circuit 13, signal transformation circuit
14th, conversion motor control circuit 15, conventional go to standby delay circuit 16, the conventional power-supplying circuit powered for four circuit
17, standby go to conventional delay circuit 18, for the standby stand-by power supply power supply circuits 19 going to the power supply of conventional delay circuit 18；Its
In, conventional go to standby delay circuit 16, standby go to conventional delay circuit 18 at least provided with one group of band normally open contact and normally closed
The gate-controlled switch of contact, conversion motor control circuit 15 is at least provided with two groups of gate-controlled switches with normally open contact and normally closed interlock；
Conventional power-supplying circuit 17 is connected with the A phase in conventional power supply, the outfan of conventional power supply three-phase pressure loss testing circuit 13 with
The input of signal transformation circuit 14 is connected, conventional input and the conversion motor control circuit 15 going to standby delay circuit 16
Control signal be connected with the outfan of signal transformation circuit 14；The first of the gate-controlled switch of conversion motor control circuit 15 is public
End is connected with conventional power supply A phase by the normally closed interlock of one stroke switch 12 altogether, the gate-controlled switch of conversion motor control circuit 15
The second common port by one stroke switch 12 normally closed interlock be connected with the A phase of stand-by power supply, correspondingly, the first common port pair
The first normally open contact answered and conversion motor 11 rotate forward control end and are connected, corresponding second normally closed interlock of the second common port and conversion
Motor 11 reversion control end is connected, and the input of stand-by power supply power supply circuits 19 is connected with the second normally closed interlock；Conventional go to standby
Be connected with the N phase of conventional power supply with the normally open contact of delay circuit 16, the standby normally open contact going to conventional delay circuit with standby
It is connected with the N of power supply, the conventional common port going to standby delay circuit 16 is connected with the common port of conversion motor 11；Standby turn
Common port to conventional delay circuit 18 is connected with the common port of conversion motor 11, or standby goes to conventional delay circuit 18
Common port is connected with the standby normally closed interlock going to conventional delay circuit 18.
Referring to Fig. 2, Fig. 3, conventional power supply three-phase pressure loss testing circuit 13 includes its input and is connected respectively to each corresponding to
The conventional power supply A phase no-voltage detection circuit 131 of conventional power supply three-phase, conventional power supply B phase no-voltage detection circuit 132 and conventional
Power supply C phase no-voltage detection circuit 133；Wherein, conventional power supply A phase no-voltage detection circuit 131 doubles as conventional power-supplying circuit 17,
Conventional power supply A phase no-voltage detection circuit 131 includes A phase capacity voltage dropping circuit 1311, the A commutating phase mu balanced circuit being sequentially connected in series
1312；Conventional power supply B phase no-voltage detection circuit 132 includes B phase capacity voltage dropping circuit 1321, the B commutating phase voltage stabilizing being sequentially connected in series
Circuit 1322 and B phase photoelectric isolating circuit 1323；Conventional power supply C phase no-voltage detection circuit 133 includes the C phase being sequentially connected in series
Capacity voltage dropping circuit 1331, C commutating phase mu balanced circuit 1332 and C phase photoelectric isolating circuit 1333；Wherein, A commutating phase voltage stabilizing
Circuit 1312, B phase photoelectric isolating circuit 1323, C phase photoelectric isolating circuit 1333 and signal transformation circuit 14 successively before and after
Series connection.
Referring to Fig. 3, A phase capacity voltage dropping circuit 1311, B phase capacity voltage dropping circuit 1321 and C phase capacity voltage dropping circuit 1331
All include by the non-polar condenser (C1, C2, C3) being resistant to power frequency high voltage and in parallel with this non-polar condenser (C1, C2, C3)
Discharge resistance (R6, R8, R10) composition；Capacity voltage dropping circuit module input is simultaneously connected to varistor (Rt1, Rt2, Rt3).
Non-polar condenser (C1, C2, C3) is the CBB electric capacity of 240V ~ 1000V or safety electric capacity for pressure voltage.Nonpolarity
The capacity of capacitor (C1, C2, C3) is preferably 0.1uF ~ 2.2uF.Matchingly, discharge resistance (R6, R8, R10) be 330k Ω ~
1000 kΩ.
Referring to Fig. 3, A commutating phase mu balanced circuit 1312, B commutating phase mu balanced circuit 1322, C commutating phase mu balanced circuit 1332 and
Stand-by power supply power supply circuits 19 all include integrated full-wave rectification bridge (D8, D9, D10, D11) and located at full-wave rectification bridge
The filter capacitor (C8, C9, C10, C12) of (D8, D9, D10, D11) outfan, full-wave rectification bridge (D8, D9, D10, D11) exports
End is provided with the mu balanced circuit that voltage regulation resistance (R5, R7, R9) and Zener diode (VD1, VD3, VD4, VD2) are composed in series, wherein,
Zener diode (VD1, VD2) in A commutating phase mu balanced circuit 1312 and stand-by power supply power supply circuits 19 is that 12V is steady for voltage stabilizing value
Pressure diode, Zener diode VD3, the VD4 in B commutating phase mu balanced circuit and C commutating phase mu balanced circuit 1332) it is voltage stabilizing value
For 5V Zener diode；A commutating phase mu balanced circuit 1312 outfan is 5V integrated regulator U1 and filter followed by voltage stabilizing value
Secondary pressure circuit that ripple electric capacity (C11, C4) forms, this secondary pressure circuit be conventional power supply three-phase pressure loss testing circuit 13,
Signal transformation circuit 14, conversion motor control circuit 15, conventional go to standby delay circuit 16 working power is provided；B phase photoelectricity
Isolation circuit 1323 and C phase photoelectric isolating circuit 1333 are and are respectively made up of a photoelectrical coupler, this two photoelectrical couplers
For being integrated with double optocoupler integrated circuit U2 of model PC521-2 of two photoelectrical couplers, its input is whole with B phase respectively
The outfan of the Zener diode (VD3, VD4) in stream mu balanced circuit and C commutating phase mu balanced circuit 1332 connects, first module light
The c pole of electric coupler is connected with the outfan of 5V integrated regulator U1 by pull-up resistor R12, first module photoelectrical coupler
E pole be connected with the c pole of second unit photoelectrical coupler, the e pole of second unit photoelectrical coupler is defeated with signal transformation circuit 14
Enter end to connect.
Referring to Fig. 3, signal transformation circuit 14 is main to be gone here and there by the NAND gate circuit with Schmidt trigger for the two-stage (U31, U41)
Joint group becomes, and the input of each NAND gate circuit connects, and the input of first order NAND gate circuit U31 and conventional power supply connect
It is parallel with pull down resistor R11 and ground capacity C7 between ground wire.Gate-controlled switch in conversion motor control circuit 15 is to be provided with two
Organize the power supply selective relay KA1 of normally closed normal open switch contact, the common port of its first group of switch contact and second group of switch touch
The common port of head corresponds respectively to the first common port of gate-controlled switch and second common port of conversion motor control circuit 15；Accordingly
Ground, the normally closed interlock of the normally open contact of its first group of switch contact and second group of switch contact corresponds respectively to the first normally open contact
With the second normally closed interlock, power supply selective relay KA1 is by a NPN type power supply selection audion Q1 driving, this power supply selection three
The b pole of pole pipe Q1 is connected to the second level NAND gate circuit U41 outfan of signal transformation circuit 14 by resistance R14；Standby electricity
The input of source power supply circuits 19 is connected with the normally closed interlock of second group of switch contact.NAND gate circuit with Schmidt trigger
Preferably model CD4093 integrated circuit, this IC interior is integrated with the NAND gate circuit unit of 4 units, can just expire
The quantity of sufficient aforementioned four NAND gate circuit.
Referring to Fig. 4, conventional go to standby delay circuit 16 include by potentiometer PR1 and electric capacity C13 be composed in series conventional
Charge-discharge circuit, the logic circuit being made up of the NAND gate circuit with Schmidt trigger (U51, U61) of two series connection, and
Conventional N phase control relay KA3 with one group of normally open contact and normally closed interlock；Wherein, the input of each NAND gate circuit
Connect, the b that the potentiometer PR1 input in conventional charge-discharge circuit selects audion Q1 with power supply is extremely connected, electric capacity C13
It is connected with conventional power ground line, the current potential PR1 device outfan in conventional charge-discharge circuit is with first order NAND gate circuit U51's
Input is connected；Conventional N phase control relay KA3 commonly uses N phase control audion Q2 by a NPN type and drives, and this conventional N is phased
The b pole of audion Q2 processed is connected to the second level NAND gate circuit U61 outfan of logic circuit by a resistance R15；Conventional N phase
The normally open contact of control relay KA3 corresponds to the conventional normally open contact going to standby delay circuit 16, conventional N phase control relay
The common port of device KA3 corresponds to the conventional common port going to standby delay circuit 16.
Referring to Fig. 4, standby go to conventional delay circuit 18 and include by fixed resister R16, potentiometer PR2 and electric capacity C14
The standby charge-discharge circuit being sequentially composed in series, the logic drive circuit being made up of 555 timer integrated circuit U7, and carry
One group of normally opened standby N phase control relay KA2 with normally closed interlock；Wherein, the pin 2 of 555 timer integrated circuit U7 and drawing
Foot 6 is connected with the outfan of the potentiometer PR2 in standby charge-discharge circuit after connecting, the fixation in standby charge-discharge circuit
Resistor input is connected with the cathode output end of the full-wave rectification bridge D11 in stand-by power supply power supply circuits 19,555 intervalometer collection
Become the electric capacity C14 one end in the pin 1 and standby charge-discharge circuit of circuit U 7 whole with the all-wave in stand-by power supply power supply circuits 19
The negative pole of stream bridge D11 is connected, complete in the pin 4 of 555 timer integrated circuit U7 and pin 8 and stand-by power supply power supply circuits 19
The cathode output end of ripple rectifier bridge D11 is connected；Standby N phase control relay KA2 is by one by 555 timer integrated circuit U7
Pin 3 drive, i.e. all wave rectification in coil one end of standby N phase control relay KA2 and stand-by power supply power supply circuits 19
The cathode output end of bridge D11 is connected, the other end is connected with the pin 3 of 555 timer integrated circuit U7；Standby N phase control relay
The normally open contact of device KA2 corresponds to the standby normally open contact going to conventional delay circuit 18, standby N phase control relay KA2's
Common port corresponds to the standby common port going to conventional delay circuit 18 delay circuit.
Referring to Fig. 5, control circuit also includes indicating whether the chopper as master switch is in the state of "on" position and refers to
Show circuit 12, condition indication circuit 12 is connected with travel switch 12.
Book and specific embodiment do not constitute any restriction to the present invention according to the above description, the invention is not limited in
The specific embodiment that face is disclosed and described, some modifications to the present invention and deformation are it should also the right falling into the present invention will
In the protection domain asked.
Claims (10)
1. a kind of control circuit of simple type double-power supply switching device, it includes the mechanical switch machine located at double-power supply switching device
Conversion motor in structure and travel switch it is characterised in that：It also includes conventional power supply three-phase pressure loss testing circuit, signal shaping
Circuit, conversion motor control circuit, conventional go to standby delay circuit, the conventional power supply powered for aforementioned four circuit is powered electricity
Road, standby go to conventional delay circuit, goes to the stand-by power supply power supply circuits that conventional delay circuit is powered for standby；Wherein, often
With going to standby delay circuit, standby to go to conventional delay circuit controlled with normally open contact and normally closed interlock at least provided with one group
Switch, conversion motor control circuit is at least provided with two groups of gate-controlled switches with normally open contact and normally closed interlock；Conventional power supply is powered
Circuit is connected with the A phase in conventional power supply, and the outfan of conventional power supply three-phase pressure loss testing circuit is defeated with signal transformation circuit
Enter end to be connected, commonly use and go to the input of standby delay circuit and the control signal of conversion motor control circuit and signal shaping
The outfan of circuit is connected；First common port of the gate-controlled switch of conversion motor control circuit by one stroke switch normally closed touch
Head is connected with conventional power supply A phase, the second common port of the gate-controlled switch of conversion motor control circuit by one stroke switch normal
Close contact to be connected with the A phase of stand-by power supply, correspondingly, corresponding first normally open contact of the first common port rotates forward control with conversion motor
End processed is connected, and corresponding second normally closed interlock of the second common port and conversion motor reversion control end is connected, and stand-by power supply is powered electricity
The input on road is connected with the second normally closed interlock；Commonly use and go to the normally open contact of standby delay circuit and the N phase phase of conventional power supply
Even, the N of the standby normally open contact and stand-by power supply going to conventional delay circuit is connected, the conventional public affairs going to standby delay circuit
End is connected with the common port of conversion motor altogether；The standby common port going to conventional delay circuit and the common port phase of conversion motor
Connect, or the standby common port going to conventional delay circuit is connected with the standby normally closed interlock going to conventional delay circuit.
2. the control circuit of simple type double-power supply switching device as claimed in claim 1, is characterized in that：Described conventional power supply three
Phase no-voltage detection circuit includes the conventional power supply A phase decompression detection that its input is connected respectively to each corresponding conventional power supply three-phase
Circuit, conventional power supply B phase no-voltage detection circuit and conventional power supply C phase no-voltage detection circuit；Wherein, conventional power supply A phase decompression
Testing circuit doubles as conventional power-supplying circuit, and conventional power supply A phase no-voltage detection circuit includes the A phase capacitance decompression being sequentially connected in series
Circuit, A commutating phase mu balanced circuit；Conventional power supply B phase no-voltage detection circuit includes B phase capacity voltage dropping circuit, the B phase being sequentially connected in series
Regulator rectifier circuit and B phase photoelectric isolating circuit；Conventional power supply C phase no-voltage detection circuit includes the C phase electric capacity being sequentially connected in series
Reduction voltage circuit, C commutating phase mu balanced circuit and C phase photoelectric isolating circuit；Wherein, A commutating phase mu balanced circuit, B phase Phototube Coupling
Circuit, C phase photoelectric isolating circuit and aforesaid signal transformation circuit tandem successively.
3. the control circuit of simple type double-power supply switching device as claimed in claim 2, is characterized in that：Described A phase electric capacity fall
Volt circuit, B phase capacity voltage dropping circuit and C phase capacity voltage dropping circuit all include by the non-polar condenser being resistant to power frequency high voltage and with
This non-polar condenser discharge resistance composition in parallel；Capacity voltage dropping circuit module input is simultaneously connected to varistor.
4. the control circuit of simple type double-power supply switching device as claimed in claim 3, is characterized in that：Described polarity free capacitor
Device is the CBB electric capacity of 240V ~ 1000V or safety electric capacity for pressure voltage.
5. the control circuit of simple type double-power supply switching device as claimed in claim 4, is characterized in that：Described A commutating phase is steady
Volt circuit, B commutating phase mu balanced circuit, C commutating phase mu balanced circuit and stand-by power supply power supply circuits all include integrated all wave rectification
Bridge and the filter capacitor located at full-wave rectification bridge outfan, full-wave rectification bridge outfan is provided with voltage regulation resistance and voltage stabilizing two pole
The mu balanced circuit that pipe is composed in series, wherein, the Zener diode in A commutating phase mu balanced circuit and stand-by power supply power supply circuits is steady
Pressure is worth for 12V Zener diode, and the Zener diode in B commutating phase mu balanced circuit and C commutating phase mu balanced circuit for voltage stabilizing value is
5V Zener diode；A commutating phase circuit output end of pressure-stabilizing is 5V integrated regulator and filter capacitor group followed by voltage stabilizing value
The secondary pressure circuit becoming, this secondary pressure circuit are conventional power supply three-phase pressure loss testing circuit, signal transformation circuit, conversion electricity
Machine control circuit, conventional go to standby delay circuit working power is provided；B phase photoelectric isolating circuit and C phase photoelectric isolating circuit
It is and is respectively made up of a photoelectrical coupler, this two photoelectrical couplers are the model being integrated with two photoelectrical couplers
Double optocoupler integrated circuits of PC521-2, its input respectively with B commutating phase mu balanced circuit and C commutating phase mu balanced circuit in steady
The outfan of pressure diode connects, and the defeated of pull-up resistor and 5V integrated regulator is passed through in the c pole of first module photoelectrical coupler
Go out end to connect, the e pole of first module photoelectrical coupler is connected with the c pole of second unit photoelectrical coupler, second unit light thermocouple
The e pole of clutch is connected with signal transformation circuit input.
6. the control circuit of simple type double-power supply switching device as claimed in claim 5, is characterized in that：Described signal shaping electricity
Road is mainly composed in series by the NAND gate circuit with Schmidt trigger for the two-stage, and the input of each NAND gate circuit connects one
Rise, between the input of first order NAND gate circuit and conventional power ground line, be parallel with pull down resistor and ground capacity.
7. the control circuit of simple type double-power supply switching device as claimed in claim 6, is characterized in that：Described conversion motor control
Gate-controlled switch in circuit processed is the power supply selective relay being provided with two groups of normally closed normal open switch contacts, its first group of switch contact
Common port and second group of switch contact common port correspond respectively to conversion motor control circuit gate-controlled switch first public
End and the second common port altogether；Correspondingly, the normally closed interlock of the normally open contact of its first group of switch contact and second group of switch contact
Correspond respectively to the first normally open contact and the second normally closed interlock, power supply selective relay selects audion by a NPN type power supply
Drive, this power supply selects the b pole of audion to be connected to the second level NAND gate circuit outfan of signal transformation circuit by resistance；
The input of stand-by power supply power supply circuits is connected with the normally closed interlock of second group of switch contact.
8. the control circuit of simple type double-power supply switching device as claimed in claim 7, is characterized in that：Described conventional go to standby
Include the conventional charge-discharge circuit being made up of potentiometer and capacitances in series with delay circuit, by the band schmidt trigger of two series connection
The logic circuit of the NAND gate circuit composition of device, and the conventional N phase control relay with one group of normally open contact and normally closed interlock
Device；Wherein, the input of each NAND gate circuit connects, and the potentiometer input in conventional charge-discharge circuit is selected with power supply
The b selecting audion is extremely connected, and this electric capacity is connected with conventional power ground line, the potentiometer output in conventional charge-discharge circuit with
The input of first order NAND gate circuit is connected；Conventional N phase control relay is commonly used N phase control audion by a NPN type and is driven
Dynamic, the b pole of this conventional N phase control audion is connected to the second level NAND gate circuit outfan of logic circuit by a resistance；
The normally open contact of conventional N phase control relay corresponds to the conventional normally open contact going to described in standby delay circuit, and conventional N is phased
The common port of relay processed corresponds to the conventional common port going to standby delay circuit.
9. the control circuit of simple type double-power supply switching device as claimed in claim 3, is characterized in that：Described standby go to often
Include the standby charge-discharge circuit being sequentially composed in series by fixed resister, potentiometer and electric capacity with delay circuit, by 555 timings
The logic drive circuit of device integrated circuit composition, and normally opened with one group and normally closed interlock standby N phase control relay；Its
In, the pin 2 of 555 timer integrated circuit and pin 6 connect after with standby charge-discharge circuit in potentiometer output
End is connected, and the fixed resister input in standby charge-discharge circuit and the full-wave rectification bridge in stand-by power supply power supply circuits are just
Pole outfan is connected, and the electric capacity one end in the pin 1 and standby charge-discharge circuit of 555 timer integrated circuit is supplied with stand-by power supply
The negative pole of the full-wave rectification bridge in circuit is connected, and the pin 4 of 555 timer integrated circuit and pin 8 are powered with stand-by power supply
The cathode output end of the full-wave rectification bridge in circuit is connected；Standby N phase control relay is by one by the integrated electricity of 555 intervalometers
The pin 3 on road drives, i.e. full-wave rectification bridge in coil one end of standby N phase control relay and stand-by power supply power supply circuits
Cathode output end is connected, the other end is connected with the pin 3 of 555 timer integrated circuit；The normally opened of standby N phase control relay touches
Head corresponds to the standby normally open contact going to described in conventional delay circuit, and the common port of standby N phase control relay corresponds to standby
With going to the common port of conventional delay circuit delay circuit.
10. the control circuit of simple type double-power supply switching device as claimed in claim 9, is characterized in that：Described control circuit
Also include indicating condition indication circuit, condition indication circuit and the stroke whether chopper as master switch is in "on" position
Switch is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510156939.1A CN104716735B (en) | 2015-04-04 | 2015-04-04 | A kind of control circuit of simple type double-power supply switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510156939.1A CN104716735B (en) | 2015-04-04 | 2015-04-04 | A kind of control circuit of simple type double-power supply switching device |
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| Publication Number | Publication Date |
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| CN104716735A CN104716735A (en) | 2015-06-17 |
| CN104716735B true CN104716735B (en) | 2017-03-01 |
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| CN201510156939.1A Expired - Fee Related CN104716735B (en) | 2015-04-04 | 2015-04-04 | A kind of control circuit of simple type double-power supply switching device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107040038B (en) * | 2017-06-02 | 2023-07-25 | 浙江德力西电器有限公司 | Dual-power conversion control circuit based on 555 timer |
| CN107645205A (en) * | 2017-10-20 | 2018-01-30 | 德力西电气有限公司 | A kind of double power supply converting switch control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU2003290107A1 (en) * | 2003-07-14 | 2005-01-28 | Magnetek S.P.A. | Emergency electric power supply unit |
| CN2817180Y (en) * | 2005-04-09 | 2006-09-13 | 凌岩 | Module for controlling dual power supply switching contactor |
| CN101369739B (en) * | 2008-09-28 | 2010-12-01 | 上海宝钢化工有限公司 | Spare power automatic switching device and method for three-segment bus two-segment switch |
| CN102355048B (en) * | 2011-09-19 | 2013-11-13 | 河北工业大学 | Intelligent dual-power automatic transfer switch and running method |
| CN102664465B (en) * | 2012-05-21 | 2014-12-17 | 浙江正泰电器股份有限公司 | Breaker controller with dual-power-source switching function, switching system and switching method |
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