CN204045491U - The controller of permanent magnet type vacuum circuit-breaker - Google Patents
The controller of permanent magnet type vacuum circuit-breaker Download PDFInfo
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- CN204045491U CN204045491U CN201420509330.9U CN201420509330U CN204045491U CN 204045491 U CN204045491 U CN 204045491U CN 201420509330 U CN201420509330 U CN 201420509330U CN 204045491 U CN204045491 U CN 204045491U
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Abstract
The utility model discloses a kind of controller of permanent magnet type vacuum circuit-breaker, comprise microprocessor unit, power supply unit, coil control and driver element and detection and display unit, mutually couple between its each, described coil controls to comprise with driver element: drive circuit; Booster circuit.The controller of permanent magnet type vacuum circuit-breaker of the present utility model, just effectively boosting can be carried out to the voltage that driver element outputs on coil by the setting of booster circuit, effectively avoid and finally cause flowing through the reduction of its internal current because coil is aging, make coil produce magnetic force problem large not.
Description
Technical field
The utility model relates to a kind of Intelligent Low-voltage Electrical Apparatus, relates to a kind of controller of permanent magnet type vacuum circuit-breaker in particular.
Background technology
Permanent magnetic vacuum breaker carries out by permanent magnet mechanism a kind of vacuum circuit-breaker of closing a floodgate, and its inside is all provided with a controller and controls to close a floodgate and the process of separating brake, very simple and convenient.
As notification number be CN103165342A patent discloses split-phase type Quick-type permanent magnetic vacuum breaker intelligent controller, control the three-phase operating mechanism action of split-phase type Quick-type permanent magnetic vacuum breaker, every phase operating mechanism comprises: the electromagnetic repulsion force mechanism containing on/off switch coil, permanent magnet mechanism containing on/off switch coil, described intelligent controller comprises: microprocessor unit, power supply unit, coil controls and driver element, detect and display unit, coil wherein controls to provide driving voltage with driver element to coil, but this permanent magnetic vacuum breaker, after long usage, circuit on coil will be aging, at this moment the overall impedance of whole coil will be caused to raise, if at this moment drive circuit be applied to driving voltage on coil still with words the same before, the electric current flowing through coil inside will be caused to diminish, and the magnetic force that coil produces decides with the size of current by coil inside, so after the electric current flowing through coil inside reduces, the magnetic force that coil will be caused to produce also reduces, when so just easily appearing at the dropout of circuit breaker needs, because the magnetic force that coil produces reduces to cause driving permanent magnet mechanism, when allowing vacuum circuit-breaker thread off, vacuum circuit-breaker cannot be threaded off, finally cause the generation of accident.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of coil that still can make after coil is aging to produce the controller of the permanent magnet type vacuum circuit-breaker of enough magnetic force.
For achieving the above object, the utility model provides following technical scheme: a kind of controller of permanent magnet type vacuum circuit-breaker, comprise microprocessor unit, power supply unit, coil control and driver element and detection and display unit, mutually couple between its each, it is characterized in that: described coil controls to comprise with driver element:
Drive circuit, is coupled between microprocessor unit and external coil, produces magnetic force to drive external coil;
Booster circuit, is coupled between drive circuit and external coil, to boost to the output voltage of drive circuit.
Wherein, when booster circuit detects that coil line is aging time, drive circuit is boosted and produces enough magnetic force with drive coil.
By adopting technique scheme, by the setting of booster circuit, just can aging circuit effectively on coil, time impedance uprises, an effect of boosting is carried out to the voltage that drive circuit exports on external coil, even if after the aging impedance of coil uprises like this, its inside also can be made to keep identical intensity by electric current, make coil produce the magnetic force with formed objects before.
The utility model is set to further: described booster circuit comprises:
Boosting section, is coupled between drive circuit and external coil, to boost to the output voltage of drive circuit;
Switch portion, is coupled to boosting section, to regulate the boosting amplitude of boosting section.
By adopting technique scheme, so just can carry out a boosting by boosting section to the output voltage of drive circuit, just can control just to allow boosting section boost when coil is aging time by switch portion, avoid unnecessary boosting, boosting is carried out, the current strength that situation about uprising in aging circuit impedance still can be passed through in hold-in winding with regard to the voltage that can be good at drive circuit outputs on external coil.
The utility model is set to further: described switch portion comprises:
Switching tube, comprises first end, is coupled on the node that formed between energy storage inductor and diode, the second end, ground connection;
Pulse generator, is coupled to switch controlled end, to be supplied to the pulse current of switching tube switch;
Whether testing circuit, is coupled between pulse generator and external coil, aging to detect external coil, and whether driving pulse generator produces pulse signal simultaneously.
By adopting technique scheme, whether agingly just can reach by testing circuit the circuit detected on external coil, whether allowing pulse generator output pulse signal to switching tube, make switching tube carry out switch motion, drive the effect of boosting section boosting.
In embodiment of the present utility model, described boosting section comprises: storage capacitor, be coupled to external coil, in parallel with external coil, to provide the driving voltage of external coil, its one end input voltage is just, other end input voltage is negative, the first diode, negative electrode is coupled to storage capacitor, anode also couples ground connection after switching tube, to prevent storage capacitor from discharging, and energy storage inductor, one end is coupled to drive circuit, the other end is coupled to diode anode, and again to charge to electric capacity, wherein switching tube is NPN triode.
Described testing circuit comprises: measuring resistance; Be coupled between external coil and ground, so that will the current conversion of external coil be flow through for voltage signal, comparator, this comparator comprises in-phase input end, for receiving external reference voltage signal, inverting input, is coupled to measuring resistance to receive the voltage signal on measuring resistance, and wherein comparator adopts comparatively common LM339 voltage comparator.
Described pulse generator comprises: oscillating circuit, be coupled to comparator output terminal, to determine whether according to the output of comparator to produce vibration, PWM chip, this PWM chip comprises input, be coupled to oscillating circuit to receive pure oscillation signal, output, be coupled to switch controlled end so that the pulse current after modulation is sent to switching tube, wherein PWM chip adopts 555 timing chips, 2 of this chip, oscillating circuit is coupled to after 6 pin short circuits, 3 pins couple the output of switching tube, 7 pins couple oscillating circuit, wherein oscillating circuit comprises electric capacity, one end is coupled to comparator output terminal, other end ground connection, also 2,6 pins of coupling chip, discharge resistance, one end is coupled to 7 pins of PWM chip, and the other end is coupled to electric capacity, second diode, negative electrode is coupled to power subsystem, and anode is coupled to discharge resistance, is also coupled to 7 pins.
Described oscillating circuit comprises: electric capacity, and one end is coupled to comparator output terminal, other end ground connection; Discharge resistance, one end is coupled to PWM chip, and the other end is coupled to electric capacity; Second diode, negative electrode is coupled to power subsystem, and anode is coupled to discharge resistance, to prevent power subsystem to capacitor charging.
Accompanying drawing explanation
Fig. 1 is that the coil of the controller of permanent magnetic vacuum breaker of the present utility model controls the circuit diagram with driver element;
Fig. 2 is the circuit diagram of booster circuit in Fig. 1;
Fig. 3 is the circuit diagram of testing circuit in Fig. 2;
Fig. 4 is the circuit diagram of pulse generator in Fig. 2.
In figure: 1, drive circuit; 2, booster circuit; 21, pulse generator; 211, oscillating circuit; 22, testing circuit; 23, boosting section; 24, switch portion; L, energy storage inductor; D1, the first diode; C1, storage capacitor; Q, switching tube; U, comparator; R1, measuring resistance; IC, PWM chip; D2, the second diode; R2, discharge resistance; C2, electric capacity.
Embodiment
Wherein 2 pins of 555 timing chips are low triggering end, 6 pins are high-triggering end, 7 pins are discharge end, 3 pins are output, the output level of this output controls by 2,6 pins, so if desired export pulse current by 555 timing chips, only need at 2,6 pin place input oscillating voltages.
With reference to shown in Fig. 1, the controller of a kind of permanent magnet type vacuum circuit-breaker of the present embodiment, comprise microprocessor unit, power supply unit, coil control and driver element and detection and display unit, mutually couple between its each, it is characterized in that: described coil controls to comprise with driver element:
Drive circuit 1, is coupled between microprocessor unit and external coil, produces magnetic force to drive external coil;
Booster circuit 2, is coupled between drive circuit 1 and external coil, to boost to the output voltage of drive circuit 1.
Wherein, when booster circuit 2 detects that coil line is aging time, drive circuit 1 is boosted and produces enough magnetic force with drive coil.
By adopting technique scheme, when outer lines is irised out aging time, booster circuit 2 will detect the problem that external coil is aging, so the voltage that will output on external coil drive circuit 1 carries out the effect of a boosting, even if like this when external coil is aging, also effectively can ensure to flow through the magnetic force that the current strength of external coil inside and external coil produce.
Below the boost process of above-mentioned mentioned booster circuit 2 and principle are described in further detail.
With reference to shown in Fig. 2, when drive circuit 1 drives external coil, the voltage at storage capacitor C2 two ends is the voltage at external coil two ends, whole circuit is in a kind of stable state, after testing circuit 22 detects that external coil is aging, pulse generator 21 will be sent a signal to, pulse generator 21 will produce a pulse signal, because pulse signal is made up of low and high level, so when high level is input in switching tube Q time, because switching tube Q is NPN triode, so switching tube Q will conducting, electric current on drive circuit 1 will flow into ground after energy storage inductor L, so just form a loop, energy storage inductor L will energy storage, simultaneously due to the setting of the first diode D1, storage capacitor C2 just cannot be connected to the ground, so storage capacitor C2 just cannot discharge, voltage above it keeps original voltage, certainly the maximum storage voltage of storage capacitor C2 will much larger than the output voltage of drive circuit 1 here, when low level is input in switching tube Q time, switching tube Q will disconnect, energy storage inductor L stores up full electric energy, the effect of an electric discharge will be produced, at this moment because switching tube Q disconnects, so energy storage inductor L cannot directly discharge over the ground, can so will fill to again storage capacitor C2 by the first diode D1, so the voltage on storage capacitor C2 will raise further, so just effectively reach one is carried out boosting effect to the output voltage of drive circuit 1, it is exactly a break-make of switching tube Q, voltage rise one deck on electric capacity C2, voltage on electric capacity C2 constantly adds up.
Wherein, the principle of testing circuit 22 as shown in Figure 3, measuring resistance R1 connects with external coil, according to series connection law, the electric current flow through on measuring resistance R1 is the electric current flowing through external coil, again according to Ohm's law, resistance due to measuring resistance R1 is fixing, so just the voltage relevant to the electric current flowing through external coil can be formed by measuring resistance R1 again, then by comparator U, this voltage and external reference voltage are made comparisons, when external coil is not aging, namely internal driving is not high, time electric current is larger, the voltage that measuring resistance R1 is formed is also just larger, be greater than external reference voltage, so the voltage of the inverting input of comparator U is greater than the voltage of in-phase input end, thus comparator U output low level, pulse generator 21 does not produce pulse, when external coil is aging, namely internal driving becomes large, time electric current is less, the voltage that measuring resistance R1 is formed is also just less, be less than external reference voltage, so the voltage of the inverting input of comparator U is less than the voltage of in-phase input end, thus comparator U output low level, pulse generator 21 produces pulse, booster circuit 2 boosts, increase the voltage be applied on external coil, so the electric current of external coil inside increases simultaneously, namely the voltage on measuring resistance R1 increases, if the voltage once after boosting on measuring resistance R1 is still less than external reference voltage, comparator U continues to export high level, pulse generator 21 continues to export pulse, carry out secondary booster, until when the voltage boosted on measuring resistance R1 is greater than external reference voltage, comparator U output low level, pulse generator 21 does not produce pulse, booster circuit 2 no longer boosts, so just effectively can reach and detect the whether aging effect of external coil.
The principle of pulse generator 21 as shown in Figure 4, electric capacity C2 and comparator U output couple, so when comparator U exports high level time, this high level charges to electric capacity C2, electric capacity C2 its both end voltage in the process of charging can raise gradually, namely 555 chips 2, voltage on 6 pins will raise, when the threshold value of establishing in this voltage is greater than time, 3 pins of this chip export a high level, 7 pins are opened simultaneously, electric capacity C2 is just discharged by discharge resistance R2, will constantly reduce at the voltage at its two ends of process that electric capacity C2 discharges, in time being reduced to another threshold value, 3 pin output low levels, 7 pins are closed simultaneously, electric capacity C2 no longer discharges, if now comparator U continues to export high level, namely when output voltage or deficiency, continue charging will to electric capacity C2, repeat said process, if comparator U output low level, namely output voltage is enough, charge just no longer to electric capacity C2, so the 3 pins output low level always of 555 chips, booster circuit 2 just no longer boosts, so just can effectively reach when testing circuit 22 detects that coil is aging, the effect of output pulse signal.
In sum, by the setting of booster circuit 2, occur aging at external coil, when impedance becomes large, effectively can also ensure the current strength flowing through external coil inside, ensure the magnetic force that coil produces, ensure that coil can drive permanent magnet mechanism effectively.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (7)
1. a controller for permanent magnet type vacuum circuit-breaker, comprises microprocessor unit, power supply unit, coil controls and driver element and detection and display unit, mutually couple, it is characterized in that: described coil controls to comprise with driver element between its each:
Drive circuit, is coupled between microprocessor unit and external coil, produces magnetic force to drive external coil;
Booster circuit, is coupled between drive circuit and external coil, to boost to the output voltage of drive circuit;
Wherein, when booster circuit detects that coil line is aging time, drive circuit is boosted and produces enough magnetic force with drive coil.
2. the controller of permanent magnet type vacuum circuit-breaker according to claim 1, is characterized in that: described booster circuit comprises:
Boosting section, is coupled between drive circuit and external coil, to boost to the output voltage of drive circuit;
Switch portion, is coupled to boosting section, to regulate the boosting amplitude of boosting section.
3. the controller of permanent magnet type vacuum circuit-breaker according to claim 2, is characterized in that: described boosting section comprises:
Storage capacitor, is coupled to external coil, to provide the driving voltage of external coil;
First diode, negative electrode is coupled to storage capacitor, discharges to prevent storage capacitor;
Energy storage inductor, one end is coupled to drive circuit, and the other end is coupled to diode anode, again to charge to electric capacity.
4. the controller of permanent magnet type vacuum circuit-breaker according to claim 2, is characterized in that: described switch portion comprises:
Switching tube, comprises first end, is coupled on the node that formed between energy storage inductor and diode, the second end, ground connection;
Pulse generator, is coupled to switch controlled end, to be supplied to the pulse current of switching tube switch;
Whether testing circuit, is coupled between pulse generator and external coil, aging to detect external coil, and whether driving pulse generator produces pulse signal simultaneously.
5. the controller of permanent magnet type vacuum circuit-breaker according to claim 4, is characterized in that: described testing circuit comprises:
Measuring resistance, is coupled between external coil and ground, flowing through the current conversion of external coil for voltage signal;
Comparator, this comparator comprises in-phase input end, for receiving external reference voltage signal, inverting input, is coupled to measuring resistance to receive the voltage signal on measuring resistance.
6. the controller of permanent magnet type vacuum circuit-breaker according to claim 4, is characterized in that: described pulse generator comprises:
Oscillating circuit, is coupled to comparator output terminal, to determine whether according to the output of comparator to produce vibration;
PWM chip, this PWM chip comprises input, is coupled to oscillating circuit to receive pure oscillation signal, output, is coupled to switch controlled end so that the pulse current after modulation is sent to switching tube.
7. the controller of permanent magnet type vacuum circuit-breaker according to claim 6, is characterized in that: described oscillating circuit comprises:
Electric capacity, one end is coupled to comparator output terminal, other end ground connection;
Discharge resistance, one end is coupled to PWM chip, and the other end is coupled to electric capacity;
Second diode, negative electrode is coupled to power subsystem, and anode is coupled to discharge resistance, to prevent power subsystem to capacitor charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420509330.9U CN204045491U (en) | 2014-09-04 | 2014-09-04 | The controller of permanent magnet type vacuum circuit-breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420509330.9U CN204045491U (en) | 2014-09-04 | 2014-09-04 | The controller of permanent magnet type vacuum circuit-breaker |
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| Publication Number | Publication Date |
|---|---|
| CN204045491U true CN204045491U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420509330.9U Expired - Fee Related CN204045491U (en) | 2014-09-04 | 2014-09-04 | The controller of permanent magnet type vacuum circuit-breaker |
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| CN (1) | CN204045491U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110211828A (en) * | 2019-06-28 | 2019-09-06 | 神华包神铁路集团有限责任公司 | Vacuum circuit breaker control circuit |
-
2014
- 2014-09-04 CN CN201420509330.9U patent/CN204045491U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110211828A (en) * | 2019-06-28 | 2019-09-06 | 神华包神铁路集团有限责任公司 | Vacuum circuit breaker control circuit |
| CN110211828B (en) * | 2019-06-28 | 2024-03-29 | 神华包神铁路集团有限责任公司 | Control circuit of vacuum circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20200904 |