CN205564671U - Electric operating mechanism's of circuit breaker power consumption control circuit - Google Patents
Electric operating mechanism's of circuit breaker power consumption control circuit Download PDFInfo
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- CN205564671U CN205564671U CN201620139756.9U CN201620139756U CN205564671U CN 205564671 U CN205564671 U CN 205564671U CN 201620139756 U CN201620139756 U CN 201620139756U CN 205564671 U CN205564671 U CN 205564671U
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Abstract
The utility model provides an electric operating mechanism power consumption control circuit of circuit breaker, includes power supply circuit, DCDC power module circuit, voltage stabilizing circuit and control circuit, power supply circuit includes rectifier circuit, reduction voltage circuit and filter circuit, rectifier circuit's input is connected with power L congruence power N respectively, and rectifier circuit's output is connected with reduction voltage circuit and filter circuit's input respectively, the output and the voltage stabilizing circuit of reduction voltage circuit are connected, and voltage stabilizing circuit's output is connected to control circuit and supplies power for control circuit, filter circuit's the output and the input of DCDC power module circuit are connected, and the output of DCDC power module circuit is connected with voltage stabilizing circuit's input, and the electric operating mechanism power supply to the circuit breaker is connected with the electric operating mechanism of circuit breaker to the output while of DCDC power module circuit, control circuit's the defeated entry control signal of input, control circuit's the output and the input of DCDC power module circuit are connected for the break -make of control DCDC power module circuit.
Description
Technical field
The utility model relates to Low Voltage Electrical Apparatus, particularly to the merit of the motor-operating mechanism of a kind of breaker
Consumption control circuit.
Background technology
At present, the matching used breaker power consumption with automatic reclosing function of the intelligent electric energy meter on market
Excessive, affect the power consumption statistics of user, and cause the waste of electric energy.The electric operating of existing breaker
The power control circuit of mechanism has a disadvantage in that 1, uses single service power supply, it is impossible to realize switching, merit
Consumption cannot reduce；2, need to use high pressure complete controllability device direct roof-cut resistence electric power main circuit, to being
System voltage influence is big, and reliability is the highest, complex circuit designs.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, it is provided that a kind of performance safety is stable, becomes
This is low, the power control circuit of the motor-operating mechanism of the breaker of simple in construction.
For achieving the above object, the utility model adopts the technical scheme that
The motor-operating mechanism power control circuit of a kind of breaker, including power circuit, DC/DC power supply mould
Block circuit, mu balanced circuit and control circuit；Described power circuit includes rectification circuit, reduction voltage circuit and filtering
Circuit；The input of described rectification circuit is connected with power supply L phase and power supply N respectively, rectification circuit defeated
Go out the end input respectively with reduction voltage circuit and filter circuit to be connected；The output of described reduction voltage circuit and voltage stabilizing
Circuit connects, and powers when control circuit is holding state for mu balanced circuit, and the output of mu balanced circuit connects
It is that control circuit is powered to control circuit；The output of described filter circuit and DC/DC power module circuitry
Input connect；Described DC/DC power module circuitry includes DC/DC switching power source chip U2,
The output of DC/DC power module circuitry is connected with the input of mu balanced circuit, is controlling electricity for mu balanced circuit
Road is to power during duty, the output of DC/DC power module circuitry simultaneously with the electric operating of breaker
The motor-operating mechanism that mechanism connects to breaker is powered；The input input control signal of control circuit, control
The power end of the DC/DC switching power source chip U2 of the actuating station of circuit processed and DC/DC power module circuitry
Connect, for controlling the work of the DC/DC switching power source chip U2 of DC/DC power module circuitry；When
When the motor-operating mechanism of breaker works, the input of function on signal input control circuit, control electricity
Road actuating station quits work, and makes the electricity of the DC/DC switching power source chip U2 of DC/DC power module circuitry
Source restores electricity so that DC/DC power module circuitry is connected, when the motor-operating mechanism of breaker stops
Only after work, the input of function stop signal input control circuit, control circuit actuating station starts working,
The power end making the DC/DC switching power source chip U2 of DC/DC power module circuitry is stopped power supply so that
DC/DC power module circuitry disconnects.
Further, described control circuit includes small-power complete controllability power device and control chip U3,
Control chip U3 input input control signal, the input of small-power complete controllability power device with
Control chip U3 connects, and control chip U3 will control level and export to small-power complete controllability power device
Part, the actuating station of small-power complete controllability power device is opened with the DC/DC of DC/DC power module circuitry
The power input closing power supply chip U2 connects, and small-power complete controllability power device controls DC/DC electricity
The work of the power end of the DC/DC switching power source chip U2 of source module circuit, controls DC/DC power supply mould
The power end of block connecting and disconnecting of the circuit, small-power complete controllability power device and DC/DC switching power source chip U2
Connect, carry out roof-cut resistence power supply integrated chip power supply power supply by controlling small-power complete controllability power device
Mode, cut off the current supply circuit of connecting valve power supply chip major loop.
Further, described control circuit also includes resistance R11, resistance R8, diode D10, resistance R6,
Diode D8, polar capacitor C7, electric capacity C8, described small-power complete controllability power device is MOS
Pipe Q1；One end after resistance R8 and diode D10 is connected in parallel is connected to control chip through resistance R11
Second pin of U3, the other end is connected with the grid of metal-oxide-semiconductor and the source electrode of metal-oxide-semiconductor respectively, metal-oxide-semiconductor
Drain electrode be connected with one end of resistance R6, diode D8, polar capacitor C7 and electric capacity C8 are the most in parallel
One end of rear diode D8 is connected with the other end of resistance R6, and the other end of electric capacity C8 connects DC/DC
The negative pole of the first pin polar capacitor C7 of the DC/DC switching power source chip U2 of power module circuitry connects
To ground.
Further, described DC/DC power module circuitry also includes voltage feedback circuit, transformer T1, electricity
Resistance R2, resistance R14, resistance R3, electric capacity C2, diode D7, resistance R7, diode D11, pole
Property electric capacity C9 and resistance R10, one end of resistance R2 is connected with the input of reduction voltage circuit, resistance R2's
The other end is connected with first pin of DC/DC switching power source chip U2, DC/DC switching power source chip U2
Three-prong be connected with the output of voltage feedback circuit, the input of voltage feedback circuit and transformer T1
Secondary side backfeed loop output connect, the one end after resistance R3 and electric capacity C2 parallel connection and filtered electrical
The output on road connects, and the other end is connected with the negative pole of diode D7, the positive pole of diode D7 and resistance
One end of R7 connects, the other end of resistance R7 respectively with the output of the primary side major loop of transformer T1,
5th pin of DC/DC switching power source chip U2 and the 6th pin connect, DC/DC switching power source chip
7th pin of U2 and the 8th pin ground connection, the input of transformer T1 primary side major loop and electric capacity respectively
The other end of C2 connects, and a road output of transformer T1 secondary side is connected with the input of mu balanced circuit,
Output one end of the backfeed loop of the secondary side of transformer T1 is connected with the output of control circuit, another
The three-prong of end and switching power source chip connects, the one of another output of the secondary side of transformer T1
End is connected with the positive pole of diode D11, and the negative pole of diode D11 is connected to positive source V+, transformer
The other end ground connection of another output of the secondary side of T1, polar capacitor C9 and resistance R10 are the most in parallel
Between the two ends of another output being connected to the secondary side of transformer T1, it is positioned at the another of diode D11
Side.
Further, described voltage feedback circuit includes polar capacitor C6, resistance R5, diode D9, resistance
R12, resistance R13；Resistance R5, diode D9, resistance R12 and resistance R13 are sequentially connected in series rear resistance
One end of R5 is connected with the positive pole of polar capacitor C6, one end of diode D9 and the primary side of transformer T1
Backfeed loop output connect, the other end of resistance R13 be connected to ground, resistance R12 and resistance R13
Intermediate node be connected with the input of DC/DC power module circuitry.
Further, described mu balanced circuit includes voltage-stabilized power supply chip U1, diode D6, resistance R4, polarity
Electric capacity C5, electric capacity C3, inductance coil L5 and electric capacity C4, one end of diode D6 and reduction voltage circuit
Output connects, and the other end of diode D6 is connected to ground, polar capacitor C5 after polar capacitor C5
Positive pole be connected to first pin of voltage-stabilized power supply chip U1, DC/DC power module electricity through resistance R4
The output on road is connected with one end of inductance coil L5, and the other end of inductance coil L5 is through electric capacity C3 even
Receiving first pin of voltage-stabilized power supply chip U1, second pin of voltage-stabilized power supply chip U1 is connected to circuit
Ground VSS, the three-prong of voltage-stabilized power supply chip U1 is connected to supply voltage VCC, the two ends of electric capacity C4
It is connected in the second pin and the three-prong of voltage-stabilized power supply chip U1 of voltage-stabilized power supply chip U1 in parallel.
Further, described rectification circuit is halfwave rectifier, and rectification circuit includes diode D1, diode D2
With diode D4, power supply L phase includes power supply L1 phase, power supply L2 phase and power supply L3 phase, power supply N phase
Including power supply N1 phase, diode D1, one end of diode D2 and diode D4 respectively with power supply L1 phase,
Power supply L2 phase is connected with power supply L3, and the other end is connected with the input of reduction voltage circuit and filter circuit simultaneously.
Also include insuring resistance FR1, one end of insurance resistance FR1 and diode D1, diode D2 and diode
The other end of D4 connects, and the other end is connected with the input of reduction voltage circuit and filter circuit simultaneously.
Further, also including surge protection circuit, surge protection circuit includes piezo-resistance VZ1, pressure-sensitive electricity
Resistance VZ2 and piezo-resistance VZ3, power supply L phase includes power supply L1 phase, power supply L2 phase and power supply L3 phase,
Power supply N phase includes power supply N1 phase, piezo-resistance VZ1, and piezo-resistance VZ2 and piezo-resistance VZ3 are divided
Be not connected in parallel between power supply L1 phase with power supply N1 phase, between power supply L2 phase with power supply N1 phase and electricity
Between source L3 phase with power supply N1 phase.
Further, described reduction voltage circuit includes diode D3 and resistance R1, and one end of diode D3 is with whole
The output of current circuit connects, and the other end of diode D3 is connected with one end of resistance R1, resistance R1's
The other end is connected with the input of mu balanced circuit.
Further, described filter circuit includes diode D5, inductance coil L4 and electric capacity C1, diode
One end of D5 is connected with the output of rectification circuit, and the other end is connected with one end of inductance coil L4, inductance
The other end of coil L4 is connected with the input of DC/DC power module circuitry, the positive pole of electric capacity C1 and electricity
The other end of sense coil L4 connects, the minus earth of electric capacity C1.
The motor-operating mechanism power control circuit of the utility model breaker uses low power mu balanced circuit
With the DC/DC power module circuitry of relatively high power, when the motor-operating mechanism of breaker works, control
Circuit actuating station quits work, and controls DC/DC power module circuitry and connects, DC/DC power module circuitry
Powering for motor-operating mechanism, mu balanced circuit is that control circuit is powered；When the motor-operating mechanism of breaker stops
Only after work, the actuating station work of control circuit, control circuit controls DC/DC power module circuitry and disconnects,
Only mu balanced circuit is that control circuit is powered；The DC/DC power module circuitry of relatively high power can be according to need
Ask and on-off, reduce the power consumption of the motor-operating mechanism of breaker, save electric energy, reduce cost.This
Utility model uses control small-power complete controllability power device to carry out the integrated chip power supply of roof-cut resistence power supply
The mode of power supply, cuts off the current supply circuit of connecting valve power supply chip major loop rather than uses control height
Pressure complete controllability device directly cuts off power supply circuits, the most Just because of this, just can use small-power device
Part cuts off the current supply circuit of major loop；Low cost, the voltage pulsation of high pressure main circuit is little, and circuit exports more
Add steadily, low in energy consumption.Small-power complete controllability power device can be PNP type triode, field-effect
The low-power devices such as metal-oxide-semiconductor.During control circuit work, by controlling metal-oxide-semiconductor Q1 through resistance R8
Ground connection is cut off and is powered to DC/DC switching power source chip U2 so that DC/DC switching power source chip U2
Quit work.
Accompanying drawing explanation
Fig. 1 is the frame diagram of the power control circuit of the motor-operating mechanism of the utility model breaker；
Fig. 2 is the circuit diagram of the power control circuit of the motor-operating mechanism of the utility model breaker.
Detailed description of the invention
The embodiment be given below in conjunction with accompanying drawing 1 to 2, further illustrates the electricity of breaker of the present utility model
The detailed description of the invention of the power control circuit of pneumatic operating mechanism.The electric operating of breaker of the present utility model
The power control circuit of mechanism is not limited to the following description.
As it is shown in figure 1, the motor-operating mechanism power control circuit of the utility model breaker, including power supply electricity
Road, DC/DC power module circuitry, mu balanced circuit and surge protection circuit；Described power circuit includes rectified current
Road, reduction voltage circuit and filter circuit.
As it is shown in figure 1, the input of described rectification circuit is connected with power supply L phase and power supply N respectively, rectification
The output of circuit input with reduction voltage circuit and filter circuit respectively is connected；The output of described reduction voltage circuit
End is connected with mu balanced circuit, powers when control circuit is holding state for mu balanced circuit, mu balanced circuit defeated
Go out end being connected to control circuit is that control circuit is powered；The output of described filter circuit and DC/DC power supply mould
The input of block circuit connects, and described DC/DC power module circuitry includes DC/DC switching power source chip U2,
The output of DC/DC power module circuitry is connected with the input of mu balanced circuit, for mu balanced circuit in control circuit
Power during for duty, the output of DC/DC power module circuitry simultaneously with the motor-operating mechanism of breaker
Connect the motor-operating mechanism to breaker to power；Also include control circuit, the input input of control circuit
The DC/DC switching power source chip U2 of control signal, the actuating station of control circuit and DC/DC power module circuitry
Power end connect, for controlling the work of DC/DC switching power source chip U2 of DC/DC power module circuitry；
When the motor-operating mechanism of breaker works, the input of function on signal input control circuit, control
Circuit actuating station quits work, and makes the power supply of the DC/DC switching power source chip U2 of DC/DC power module circuitry
End restores electricity so that DC/DC power module circuitry is connected, when the motor-operating mechanism of breaker stops work
After work, the input of function stop signal input control circuit, control circuit actuating station is started working, and makes DC/DC
The power end of the DC/DC switching power source chip U2 of power module circuitry is stopped power supply so that DC/DC power supply mould
Block circuit disconnects.The motor-operating mechanism power control circuit employing of the utility model breaker is low power surely
The DC/DC power module circuitry of volt circuit and relatively high power, when the motor-operating mechanism of breaker works,
Control circuit controls DC/DC power module circuitry and connects, and DC/DC power module circuitry is that motor-operating mechanism supplies
Electricity, mu balanced circuit is that control circuit is powered；After the motor-operating mechanism of breaker quits work, control electricity
Road controls DC/DC power module circuitry and disconnects, and only mu balanced circuit is that control circuit is powered；Relatively high power
DC/DC power module circuitry can on-off according to demand, reduce the merit of motor-operating mechanism of breaker
Consumption, saves electric energy, reduces cost.
In the utility model, function on signal and function stop signal are all external circuit input.
As it is shown in figure 1, described control circuit includes small-power complete controllability power device and control chip U3,
Control chip U3 first pin input control signal, the input of small-power complete controllability power device with
Second pin of control chip U3 connects, and second pin of control chip U3 will control level output to little merit
Rate complete controllability power device, the actuating station of small-power complete controllability power device and DC/DC power supply mould
The power input of the DC/DC switching power source chip U2 of block circuit connects, small-power complete controllability power device
Part controls the work of the power end of the DC/DC switching power source chip U2 of DC/DC power module circuitry, controls
DC/DC power module circuitry break-make.Small-power complete controllability power device and DC/DC switching power source chip
The power end of U2 connects, and carrys out the integrated core of roof-cut resistence power supply by controlling small-power complete controllability power device
The mode of sheet power supply, cuts off the current supply circuit of connecting valve power supply chip major loop, it is achieved reduce merit
The effect of consumption.Small-power complete controllability power device is used to control the break-make of DC/DC power module circuitry,
High pressure main circuit voltage pulsation is little, and circuit output is more steady.
The utility model uses control small-power complete controllability power device to carry out the integrated chip of roof-cut resistence power supply
The mode of power supply, cuts off the current supply circuit of connecting valve power supply chip major loop, the most Just because of this,
Low-power device just can be used to cut off the current supply circuit of major loop, compare employing control high pressure fully controllable
Property device directly cut off power supply circuits, low cost, the voltage pulsation of high pressure main circuit is little, circuit export more
Add steadily, low in energy consumption.
Specifically, as in figure 2 it is shown, described control circuit also includes resistance R11, resistance R8, diode D10,
Resistance R6, diode D8, polar capacitor C7, electric capacity C8, described small-power complete controllability power device
One end after being connected in parallel for metal-oxide-semiconductor Q1, resistance R8 and diode D10 is connected to control core through resistance R11
Second pin of sheet U3, the other end is connected with the grid of metal-oxide-semiconductor Q1 and the source electrode of metal-oxide-semiconductor Q1 respectively, MOS
The drain electrode of pipe Q1 is connected with one end of resistance R6, and diode D8, polar capacitor C7 and electric capacity C8 are the most also
After connection, one end of diode D8 is connected with the other end of resistance R6, and the other end of electric capacity C8 connects DC/DC electricity
The negative pole of the first pin polar capacitor C7 of the DC/DC switching power source chip U2 of source module circuit is connected to ground.
During control circuit work, cut off to DC/DC switch electricity through resistance R8 ground connection by controlling metal-oxide-semiconductor Q1
Source chip U2 powers so that DC/DC switching power source chip U2 quits work, (as long as cutting off DC/DC switch
The circuit of arbitrary pin of power supply chip U2, DC/DC switching power source chip U2 can quit work) described little
Power complete controllability power device can be the low-power devices such as PNP type triode, field-effect metal-oxide-semiconductor.
The power supply using the low-voltage devices such as metal-oxide-semiconductor Q1 to turn off DC/DC switching power source chip U2 realizes high pressure
The shutoff of operating circuit, the fluctuation of high pressure main circuit voltage is little, and circuit output is more steady, and small-power completely may be used
The drive circuit design of control property power device is simple, the selection low cost of composition components and parts, circuit realiration function
Reliably.
As in figure 2 it is shown, described DC/DC power module circuitry also includes transformer T1, resistance R2, resistance R14,
Resistance R3, electric capacity C2, diode D7, resistance R7, diode D11, polar capacitor C9 and resistance R10,
One end of resistance R2 is connected with the input of reduction voltage circuit, the other end of resistance R2 and DC/DC Switching Power Supply
First pin of chip U2 connects, the three-prong of DC/DC switching power source chip U2 and voltage feedback circuit
Output connect, the input of voltage feedback circuit is defeated with the backfeed loop of the secondary side of transformer T1
Going out end to connect, the one end after resistance R3 and electric capacity C2 parallel connection is connected with the output of filter circuit, the other end
Being connected with the negative pole of diode D7, the positive pole of diode D7 is connected with one end of resistance R7, resistance R7's
The other end respectively with the output of the primary side major loop of transformer T1, the of DC/DC switching power source chip U2
Five pins and the 6th pin connect, and the 7th pin and the 8th pin of DC/DC switching power source chip U2 connect respectively
Ground, the input of transformer T1 primary side major loop is connected with the other end of electric capacity C2, transformer T1 bis-times
Ce mono-road output is connected with the input of mu balanced circuit, the backfeed loop of the secondary side of transformer T1 defeated
Going out to hold one end to be connected with the output of control circuit, the three-prong of the other end and switching power source chip connects,
The secondary side of transformer T1 one end of another output be connected with the positive pole of diode D11, diode
The negative pole of D11 is connected to positive source V+, another termination of another output of the secondary side of transformer T1
Ground, polar capacitor C9 and resistance R10 is connected in another output of the secondary side of transformer T1 successively in parallel
Between the two ends of end, it is positioned at the opposite side of diode D11.
As in figure 2 it is shown, described voltage feedback circuit includes polar capacitor C6, resistance R5, diode D9, electricity
Resistance R12 and resistance R13；Resistance R5, diode D9, resistance R12 and resistance R13 are sequentially connected in series rear resistance
One end of R5 is connected with the positive pole of polar capacitor C6, one end of diode D9 and the secondary side of transformer T1
Backfeed loop output connect, the other end of resistance R13 be connected to ground, resistance R12 and resistance R13
Intermediate node be connected with the input of DC/DC power module circuitry, i.e. with DC/DC switching power source chip
The power end of U2 connects.DC/DC switching power source chip U2 is played pressure stabilization function by voltage feedback circuit.
After control chip U3 receives function on signal, send and control level to small-power complete controllability merit
Rate device, small-power complete controllability power device quits work, by the core of DC/DC switching power source chip U2
The loop that sheet power supply is connected to ground by resistance disconnects, and makes DC/DC switching power source chip U2 work, DC/DC
Switching power source chip U2 major loop turns on, and transformer T1 starts to export electric energy.Control chip U3 receives merit
After stopping signal, transmission control level is to small-power complete controllability power device, and small-power is fully controllable
Property power device start working, by the chip power of DC/DC switching power source chip U2 by resistance be connected to ground,
Making DC/DC switching power source chip U2 quit work, DC/DC switching power source chip U2 major loop disconnects, transformation
Device T1 stops output electric energy.When transformer 10 works, power to voltage-stabilized power supply chip 11, for control chip
6 duties are powered；There is provided feedback to DC/DC switching power source chip 9, control the stable output of transformer 10；
Power to motor-operating mechanism, complete circuit-breaker switching on-off action.
As in figure 2 it is shown, described mu balanced circuit includes voltage-stabilized power supply chip U1, diode D6, resistance R4, pole
Property electric capacity C5, electric capacity C3, inductance coil L5 and electric capacity C4, one end of diode D6 is defeated with reduction voltage circuit
Going out end to connect, the other end of diode D6 is connected to ground after polar capacitor C5, and polar capacitor C5 is just
Pole is connected to first pin of voltage-stabilized power supply chip U1, the output of DC/DC power module circuitry through resistance R4
End is connected with one end of inductance coil L5, and the other end of inductance coil L5 is connected to voltage stabilizing electricity through electric capacity C3
First pin of source chip U1, second pin of voltage-stabilized power supply chip U1 is connected to circuit ground VSS, voltage stabilizing electricity
The three-prong of source chip U1 is connected to supply voltage VCC, and the two ends of electric capacity C4 are connected in voltage-stabilized power supply in parallel
Second pin of chip U1 and the three-prong of voltage-stabilized power supply chip U1.
As in figure 2 it is shown, described rectification circuit is halfwave rectifier, rectification circuit includes diode D1, diode
D2 and diode D4, power supply L phase includes power supply L1 phase, power supply L2 phase and power supply L3 phase, power supply N phase
Including power supply N1 phase, diode D1, one end of diode D2 and diode D4 respectively with power supply L1 phase,
Power supply L2 phase is connected with power supply L3, and the other end is connected with the input of reduction voltage circuit and filter circuit simultaneously.
Three-phase alternating current electric rectification is direct current by rectification circuit.
Especially, as in figure 2 it is shown, also include insuring resistance FR1, one end of insurance resistance FR1 and diode
The other end of D1, diode D2 and diode D4 connects, with reduction voltage circuit and filter circuit while of the other end
Input connect.
As in figure 2 it is shown, described surge protection circuit includes piezo-resistance VZ1, piezo-resistance VZ2 and pressure-sensitive electricity
Resistance VZ3, power supply L phase includes power supply L1 phase, power supply L2 phase and power supply L3 phase, and power supply N phase includes power supply
N1 phase, piezo-resistance VZ1, piezo-resistance VZ2 and piezo-resistance VZ3 are connected in power supply L1 phase respectively in parallel
Between power supply N1 phase, between power supply L2 phase with power supply N1 phase and between power supply L3 phase and power supply N1 phase.
Surge protection circuit carries out surge protection to circuit, and performance safety is stable.
As in figure 2 it is shown, described reduction voltage circuit includes diode D3 and resistance R1, one end of diode D3 with
The output of rectification circuit connects, and the other end of diode D3 is connected with one end of resistance R1, resistance R1's
The other end is connected with the input of mu balanced circuit.Reduction voltage circuit exports to mu balanced circuit after being depressured by supply voltage.
As in figure 2 it is shown, described filter circuit includes diode D5, inductance coil L4 and electric capacity C1, diode
One end of D5 is connected with the output of rectification circuit, and the other end is connected with one end of inductance coil L4, inductor wire
The other end of circle L4 is connected with the input of DC/DC power module circuitry, the positive pole of electric capacity C1 and inductor wire
The other end of circle L4 connects, the minus earth of electric capacity C1.
In the utility model, the chip of different model can be selected as the case may be, the pin of different model
Position and numbering can make according to actually used chip and correspondingly adjusting.
Above content is to combine concrete preferred embodiment further detailed description of the utility model,
It cannot be assumed that of the present utility model being embodied as is confined to these explanations.For technology belonging to the utility model
For the those of ordinary skill in field, without departing from the concept of the premise utility, it is also possible to if making
Dry simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (10)
1. the power control circuit of the motor-operating mechanism of a breaker, it is characterised in that: include power supply electricity
Road, DC/DC power module circuitry, mu balanced circuit and control circuit；
Described power circuit includes rectification circuit, reduction voltage circuit and filter circuit；The input of described rectification circuit
End be connected with power supply L phase and power supply N respectively, the output of rectification circuit respectively with reduction voltage circuit and filtering
The input of circuit connects；
The output of described reduction voltage circuit is connected with mu balanced circuit, is standby shape for mu balanced circuit in control circuit
Powering during state, it is that control circuit is powered that the output of mu balanced circuit is connected to control circuit；Described filter circuit
Output be connected with the input of DC/DC power module circuitry, described DC/DC power module circuitry bag
Include DC/DC switching power source chip U2, the output of DC/DC power module circuitry and the input of mu balanced circuit
End connects, and powers when control circuit is duty for mu balanced circuit, DC/DC power module circuitry defeated
The motor-operating mechanism being connected to breaker with the motor-operating mechanism of breaker while of going out end is powered；
The input input control signal of control circuit, the actuating station of control circuit and DC/DC power module
The power end of the DC/DC switching power source chip U2 of circuit connects, and is used for controlling DC/DC power module electricity
The DC/DC switching power source chip U2 work on road；When the motor-operating mechanism of breaker works, function opens
The input of dynamic signal input control circuit, control circuit actuating station quits work, and makes DC/DC power supply mould
The power end of the DC/DC switching power source chip U2 of block circuit restores electricity so that DC/DC power module
Circuit ON, after the motor-operating mechanism of breaker quits work, function stop signal input control circuit
Input, control circuit actuating station is started working, and makes the DC/DC of DC/DC power module circuitry switch
The power end of power supply chip U2 is stopped power supply so that DC/DC power module circuitry disconnects.
The power control circuit of the motor-operating mechanism of breaker the most according to claim 1, its feature
It is: described control circuit includes small-power complete controllability power device and control chip U3, controls core
The input input control signal of sheet U3, the input of small-power complete controllability power device and control core
Sheet U3 connects, and control chip U3 will control level and export to small-power complete controllability power device, little
The actuating station of power complete controllability power device and the DC/DC Switching Power Supply of DC/DC power module circuitry
Chip U2 input connects, and small-power complete controllability power device controls DC/DC power module circuitry
The work of the power end of DC/DC switching power source chip U2, controls DC/DC power module circuitry break-make,
Small-power complete controllability power device is connected with the power end of DC/DC switching power source chip U2, by control
Small-power complete controllability power device processed carrys out the mode of roof-cut resistence power supply integrated chip power supply power supply, cuts
The current supply circuit of connection breaking switching power source chip major loop.
The power control circuit of the motor-operating mechanism of breaker the most according to claim 2, its feature
It is: described control circuit also includes resistance R11, resistance R8, diode D10, resistance R6, two poles
Pipe D8, polar capacitor C7, electric capacity C8, described small-power complete controllability power device is metal-oxide-semiconductor Q1；
One end after resistance R8 and diode D10 is connected in parallel is connected to the of control chip U3 through resistance R11
Two pins, the other end is connected with the grid of metal-oxide-semiconductor Q1 and the source electrode of metal-oxide-semiconductor Q1 respectively, metal-oxide-semiconductor
The drain electrode of Q1 is connected with one end of resistance R6, and diode D8, polar capacitor C7 and electric capacity C8 are the most also
After connection, one end of diode D8 is connected with the other end of resistance R6, and the other end of electric capacity C8 connects DC/DC
First pin of the DC/DC switching power source chip U2 of power module circuitry, the negative pole of polar capacitor C7 is even
Receive ground.
The power control circuit of the motor-operating mechanism of breaker the most according to claim 1, its feature
It is: described DC/DC power module circuitry also includes voltage feedback circuit transformer T1, resistance R2, electricity
Resistance R14, resistance R3, electric capacity C2, diode D7, resistance R7, diode D11, polar capacitor C9
With resistance R10, one end of resistance R2 is connected with the input of reduction voltage circuit, the other end of resistance R2 with
First pin of DC/DC switching power source chip U2 connects, the 3rd pipe of DC/DC switching power source chip U2
Pin is connected with the output of voltage feedback circuit, the input of voltage feedback circuit and the secondary of transformer T1
The output of the backfeed loop of side connects, and the one end after resistance R3 and electric capacity C2 parallel connection is defeated with filter circuit
Going out end to connect, the other end is connected with the negative pole of diode D7, the positive pole of diode D7 and the one of resistance R7
End connects, and the other end of resistance R7 output with the primary side major loop of transformer T1 respectively is connected,
5th pin of DC/DC switching power source chip U2 and the 6th pin connect, DC/DC switching power source chip
7th pin of U2 and the 8th pin ground connection, the input of transformer T1 primary side major loop and electric capacity respectively
The other end of C2 connects, and a road output of transformer T1 secondary side is connected with the input of mu balanced circuit,
Output one end of the backfeed loop of the secondary side of transformer T1 is connected with the output of control circuit, another
The three-prong of end and DC/DC switching power source chip U2 connects, another of the secondary side of transformer T1
One end of output is connected with the positive pole of diode D11, and the negative pole of diode D11 is connected to positive source
V+, the other end ground connection of another output of the secondary side of transformer T1, polar capacitor C9 and resistance
Between the two ends of another output that R10 is connected in the secondary side of transformer T1 successively in parallel, it is positioned at two
The opposite side of pole pipe D11.
The power control circuit of the motor-operating mechanism of breaker the most according to claim 4, its feature
It is: described voltage feedback circuit includes polar capacitor C6, resistance R5, diode D9, resistance R12,
Resistance R13；Described resistance R5, diode D9, resistance R12 and resistance R13 are sequentially connected in series rear resistance
One end of R5 is connected with the positive pole of polar capacitor C6, one end of diode D9 and the secondary side of transformer T1
Backfeed loop output connect, the other end of resistance R13 be connected to ground, resistance R12 and resistance R13
Intermediate node be connected with the input of DC/DC power module circuitry.
The power control circuit of the motor-operating mechanism of breaker the most according to claim 1, its feature
It is: described mu balanced circuit includes voltage-stabilized power supply chip U1, diode D6, resistance R4, polar capacitor
C5, electric capacity C3, inductance coil L5 and electric capacity C4, one end of diode D6 and the output of reduction voltage circuit
Connecting, the other end of diode D6 is connected to ground, the positive pole of polar capacitor C5 after polar capacitor C5
First pin of voltage-stabilized power supply chip U1 it is connected to, DC/DC power module circuitry defeated through resistance R4
Going out end to be connected with one end of inductance coil L5, the other end of inductance coil L5 is connected to surely through electric capacity C3
First pin of voltage source chip U1, second pin of voltage-stabilized power supply chip U1 is connected to circuit ground VSS,
The three-prong of voltage-stabilized power supply chip U1 is connected to supply voltage VCC, and the two ends of electric capacity C4 are connected in parallel
The second pin and the three-prong of voltage-stabilized power supply chip U1 at voltage-stabilized power supply chip U1.
The power control circuit of the motor-operating mechanism of breaker the most according to claim 1, its feature
Being: described rectification circuit is halfwave rectifier, rectification circuit includes diode D1, diode D2 and two poles
Pipe D4, power supply L phase includes power supply L1 phase, power supply L2 phase and power supply L3 phase, and power supply N phase includes electricity
Source N1 phase, diode D1, one end of diode D2 and diode D4 respectively with power supply L1 phase, power supply
L2 phase is connected with power supply L3, and the other end is connected with the input of reduction voltage circuit and filter circuit simultaneously；Also
Including insurance resistance FR1, one end of insurance resistance FR1 and diode D1, diode D2 and diode
The other end of D4 connects, and the other end is connected with the input of reduction voltage circuit and filter circuit simultaneously.
The power control circuit of the motor-operating mechanism of breaker the most according to claim 1, its feature
It is: also include that surge protection circuit, surge protection circuit include piezo-resistance VZ1, piezo-resistance VZ2
With piezo-resistance VZ3, power supply L phase includes power supply L1 phase, power supply L2 phase and power supply L3 phase, power supply N
Include the parallel connection respectively of power supply N1 phase, piezo-resistance VZ1, piezo-resistance VZ2 and piezo-resistance VZ3 mutually
It is connected between power supply L1 phase with power supply N1 phase, between power supply L2 phase with power supply N1 phase and power supply L3 phase
Between power supply N1 phase.
The power control circuit of the motor-operating mechanism of breaker the most according to claim 1, its feature
It is: described reduction voltage circuit includes diode D3 and resistance R1, one end of diode D3 and rectification circuit
Output connect, the other end of diode D3 is connected with one end of resistance R1, the other end of resistance R1
It is connected with the input of mu balanced circuit.
The power control circuit of the motor-operating mechanism of breaker the most according to claim 1, it is special
Levy and be: described filter circuit includes diode D5, inductance coil L4 and electric capacity C1, diode D5's
One end is connected with the output of rectification circuit, and the other end is connected with one end of inductance coil L4, inductance coil
The other end of L4 is connected with the input of DC/DC power module circuitry, the positive pole of electric capacity C1 and inductor wire
The other end of circle L4 connects, the minus earth of electric capacity C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139756.9U CN205564671U (en) | 2016-02-24 | 2016-02-24 | Electric operating mechanism's of circuit breaker power consumption control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139756.9U CN205564671U (en) | 2016-02-24 | 2016-02-24 | Electric operating mechanism's of circuit breaker power consumption control circuit |
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| Publication Number | Publication Date |
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| CN205564671U true CN205564671U (en) | 2016-09-07 |
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| CN201620139756.9U Withdrawn - After Issue CN205564671U (en) | 2016-02-24 | 2016-02-24 | Electric operating mechanism's of circuit breaker power consumption control circuit |
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| CN (1) | CN205564671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123575A (en) * | 2016-02-24 | 2017-09-01 | 浙江正泰电器股份有限公司 | The power control circuit of the motor-operating mechanism of breaker |
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2016
- 2016-02-24 CN CN201620139756.9U patent/CN205564671U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123575A (en) * | 2016-02-24 | 2017-09-01 | 浙江正泰电器股份有限公司 | The power control circuit of the motor-operating mechanism of breaker |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160907 Effective date of abandoning: 20200218 |