CN203367136U - Controller with permanent-magnet mechanism - Google Patents
Controller with permanent-magnet mechanism Download PDFInfo
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- CN203367136U CN203367136U CN 201320285695 CN201320285695U CN203367136U CN 203367136 U CN203367136 U CN 203367136U CN 201320285695 CN201320285695 CN 201320285695 CN 201320285695 U CN201320285695 U CN 201320285695U CN 203367136 U CN203367136 U CN 203367136U
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Abstract
The utility model discloses a controller with a permanent-magnet mechanism. The controller comprises a controller circuit, an energy storage capacitor, a permanent-magnet operation mechanism and a power supply module. The controller is connected with the coil of the permanent-magnet operation mechanism and the energy storage capacitor respectively; and the power supply module is connected with the energy storage capacitor. The controller comprises a switch circuit, a drive isolation circuit and a control chip, wherein the control chip is connected with the drive isolation circuit; and the drive isolation circuit is connected with the switch circuit. The controller disclosed by the utility model has the advantages of being long in life, high in reliability, simple in structure, saving in power source, and the like.
Description
Technical field
The utility model relates to a kind of permanent magnet mechanism controller, belongs to the High-Voltage Electrical Appliances field.
Background technology
At present, the permanent-magnet manipulating mechanism vacuum circuit-breaker control circuit of more domestic manufacturer production still adopt 2 D.C. contactors switching storage capacitors to minute, the closing coil power supply, brought thus following problem:
1, the control time is inaccurate, dispersiveness is large;
2, be difficult to link with the high-voltage complex protection device;
3, the life and reliability of contactor is undesirable;
4, power consumption is many, cost is high, weight and volume is large.
A lot of industrial and mining enterprises require to adopt the permanent-magnet manipulating mechanism electronic controller that the power electronic device design function is complete, cost is low, reliability is high.
The utility model content
For addressing the above problem, the utility model discloses a kind of permanent magnet mechanism controller.
In order to achieve the above object, the utility model provides following technical scheme: a kind of permanent magnet mechanism controller, comprise controller circuitry, energy storage capacitor, permanent-magnet manipulating mechanism and power module, described controller is connected with coil and the energy storage capacitor of described permanent-magnet manipulating mechanism respectively, described power module and energy storage capacitor, described controller comprises switching circuit, driving isolation circuit and control chip, described control chip is connected with the driving isolation circuit, and the driving isolation circuit is connected with switching circuit.
As a kind of improvement of the present utility model, described switching circuit comprises two thyristors, and described two thyristors are connected in parallel.
As a kind of improvement of the present utility model, described permanent magnet mechanism controller also comprises a snubber circuit.
As a kind of improvement of the present utility model, be provided with voltage detecting circuit and current detection circuit on described controller circuitry.
As a kind of improvement of the present utility model, be provided with a displacement detecting circuit between described controller circuitry and permanent-magnet manipulating mechanism.
The beneficial effects of the utility model are:
1, permanent-magnet manipulating mechanism of the present utility model is compared with spring operating mechanism with electromagnetic operating mechanism, simple in structure, moving component is few, and the life-span is long, and Mechanical Reliability improves greatly, adopt permanent magnetism as confining force, can not produce the operate miss of traditional mechanism, conveniently realize non-maintaining operation, the switch machine characteristic of output characteristic and vacuum circuit-breaker is complementary, can reach good speed characteristics, realize Based Intelligent Control for circuit breaker and lay the foundation.
2, permanent-magnet manipulating mechanism adopts energy storage capacitor or battery as operating power, by the small-power AC power, also can be operated.Permanent magnet mechanism has kept the advantage that spring operating mechanism can operate by the small-power AC power like this, and there is no its baroque shortcoming.Storage capacitor can be given capacitor charging after rectification by a low power AC power, with the electric discharge of its involutory switching winding of thyristor control, have advantages of simple in structure, saving power supply.
3, permanent magnet mechanism can adapt to the requirement of power distribution automation.Electronic control system not only can complete minute, close a floodgate and control, but also can complete some relay protection function, communication function, remote control, online detect etc.Electronic Control can also accurately be sent the divide-shut brake signal, for synchro switch creates conditions.Because the Synchronous Closing of circuit breaker can reduce even to eliminate inrush phenomenon and the closing overvoltage of capacitor group and transformer greatly, synchronous switching off can improve the connecting-disconnecting function of circuit breaker greatly, therefore both can greatly improve the stability of electric power system, huge realistic meaning is arranged.Synchronous Closing Technology no longer needs switching-on resistance, combined floodgate inductance, reactor etc. auxiliary equipment, thereby reduced cost, what increase is to a certain degree complicated of a set of not too complicated control system and mechanical structure, but owing to can circuit breaker being carried out to suitable transformation, so the cost that response increases can be not a lot.
4, controller electric elements used are economical and practical, and cost performance is higher, have a life-span long, and reliability is high, simple in structure, saves the advantages such as power supply.And the employing Synchronous Closing Technology, further improve the stability of electric power system, simplified system configuration, the materials more all than other design save 80%, have use value preferably.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
The circuit diagram that Fig. 2 is switching circuit of the present utility model and driving isolation circuit;
The circuit diagram that Fig. 3 is control chip of the present utility model;
The circuit diagram that Fig. 4 is thyristor protection circuit of the present utility model;
Fig. 5 is current detection circuit of the present utility model;
Fig. 6 is voltage detecting circuit of the present utility model;
The flow chart that Fig. 7 is permanent magnet mechanism controller control circuit divide-shut brake of the present utility model.
Embodiment
Technical scheme the utility model provided below with reference to specific embodiment is elaborated, and should understand following embodiment and only for the utility model is described, be not used in restriction scope of the present utility model.
A kind of permanent magnet mechanism controller as described in Figure 1, comprise controller circuitry, energy storage capacitor, permanent-magnet manipulating mechanism and power module, described controller is connected with coil and the energy storage capacitor of described permanent-magnet manipulating mechanism respectively, described power module and energy storage capacitor, described controller comprises switching circuit, driving isolation circuit and control chip, described control chip is connected with the driving isolation circuit, and the driving isolation circuit is connected with switching circuit.
Control permanent-magnet manipulating mechanism by controller, coordinate permanent-magnet manipulating mechanism to complete the splitting or integrating lock operation of switch; Close a floodgate and the mutual locking of separating brake, only respond the separating brake instruction simultaneously when sending combined floodgate and sub-gate signal; Separating brake, "on" position have index signal.
Be provided with voltage detecting circuit and current detection circuit on described controller circuitry.Be provided with a displacement detecting circuit between described controller circuitry and permanent-magnet manipulating mechanism.
Described voltage detecting circuit as shown in Figure 6, can calculate energy storage capacitor voltage by gathering SIGN2 voltage, described current detection circuit as shown in Figure 5, wherein CSM025G is the punching current transformer, 2,3 pins are instrument transformer power supplys, 1 pin is the secondary side output current, can calculate the output current of 1 pin by gathering the SIGN1 magnitude of voltage, according to no-load voltage ratio, can measure primary side current.
By control chip, coordinate voltage detecting circuit and current detection circuit to be monitored energy storage capacitor, when capacitor charging voltage does not reach permissible value, index signal is arranged and forbid minute, closing operation.Also can monitor ac input circuit voltage: when AC-input voltage is less than 75%, can not index signal be arranged closing operation (being the locking switch knob) simultaneously simultaneously; When "on" position, when AC-input voltage is less than or equal to 75%, energy is separating brake (normally sub-switching operation) manually; If it is under-voltage that "on" position occurs, can realize under-voltage separating brake delay function, under-voltage point, delay time can be selected, and within instantaneity fluctuation and delay time appear in voltage, voltage recovers again normal Time Controller and is failure to actuate; When exchanging the input outage or no-voltage fault (adjustable in decompression point program) occurs, controller will send the separating brake pulse, provide discharge loop for large electric capacity simultaneously.
Be illustrated in figure 3 the circuit diagram of the utility model control chip, wherein control chip adopts singlechip control chip, the singlechip control chip of the PIC16F877A model adopted in the present embodiment, the wherein RB6 of single-chip microcomputer and RB7 pin output closing pulse HOUT and separating brake pulse TOUT.The output that single-chip microcomputer is set in the present embodiment divides, the closing pulse width time is 80 ms.
Be illustrated in figure 2 the circuit diagram of switching circuit of the present utility model and driving isolation circuit; wherein the driving isolation circuit adopts and drives chip I R2121; IR2121 has the low side thyratron driver of overcurrent detection; it has higher driving force; there is current sense function simultaneously, breaking protection and the short-circuit protection of coil can be provided.Switching circuit described in the present embodiment comprises the thyristor of two 40A, and the thyristor of described two 40A is connected in parallel.
Drive the input IN of chip I R2121 to connect the RB6 of single-chip microcomputer and closing pulse HOUT and the separating brake pulse TOUT of RB7 pin output, drive the VS end of chip I R2121 through voltage stabilizing didoe D4, resistance R 37, diode D3, resistance R capacitor C ground connection.Drive the output OUT of chip I R2121 to be connected with thyristor Q1 through resistance R 38, output OUT is connected with thyristor Q2 through resistance R 39, the grounded collector of Q1 and Q2, and emitter is connected between diode D3 and resistance R.Drive chip I R2121 the CS end through resistance R 35 ground connection, CS holds through resistance R 36 simultaneously and is connected between resistance R 37 and diode D3.
Wherein R38, R39 are gate electrode resistances. in patent, the frequency of switch is low, should prevent the sudden change of electric current simultaneously, so gate electrode resistance should not select too littlely, the resistance of R38, R39 is about 200 Ω in the present embodiment.The R37 representative value is 20 K Ω, and high resistance contributes to reduce to greatest extent the Muller electric capacity increased due to diode D3. guarantee not have remarkable electric current to flow out from OUT.To optimize switching speed and switching loss.
By driving chip I R2121 connecting circuit, guaranteed the thyristor dynamic current equalizing, guaranteed the synchronization action of parallel thyristors.By resistance R 35 is set, adopt the resistance penalty method, thereby the time discharged and recharged by the size adjustment grid of regulating grid resistance value R35 realizes that the Current for paralleled of two parallel thyristors guarantees.
When output OUT is output as when high, the Q1 of IGBT, and Q2 is open-minded, and the point of the X in Fig. 2 is pulled low to a voltage. and this voltage equals the pressure drop U on IGBT
cEadd the pressure drop of diode D3.So, when the pressure drop on IGBT Q1 and Q2 reaches the limit value of the indication overload fault set, will turn off driver output.The upper U of Q1 and Q2
cEvoltage is 3.2 V.Ultrafast recovery two utmost point U
f4007typical turn-on voltage be 1.2 V. but, because the electric current flow through is less, according to databook, can be set as 0.7 V herein.Therefore the X point voltage is:
Ux=U
D3+U
CE=1.2?V+3.2?V=4.4?V
When the CS of IR2121 end cut-in voltage is 230mV.Need to be to U
xdividing potential drop, make U
xduring=4.4V, U
y=230mV, establish R36=20k Ω:
U
Y=Ux*R35/(?R35+R36)；R35≈1.1KΩ。
Permanent-magnet operating mechanism divides, the making process duration is short; need the number of turn more minute, closing coil, cause inductance value large, during work, moment produces nearly hundred amperes, large electric current; can produce larger back electromotive force, so the utility model has increased a thyristor protection circuit.
Be illustrated in figure 4 the circuit diagram of snubber circuit of the present utility model, comprise close a floodgate buffering and splitting lock cushioning, described combined floodgate buffering comprises fuse, closing coil, thyristor, diode, electric capacity and piezo-resistance, electric current is connected to power supply negative terminal from positive source through fuse FUSE1, closing coil HQ, thyristor Q1, diode U8, is parallel with a piezo-resistance R25 and a CBB capacitor C 9 on thyristor Q1; After piezo-resistance R22 and CBB capacitor C 8 and resistance R 22 are in parallel, with after backward diode VD7 connects, be connected between described power positive end and closing coil HQ and thyristor Q1.
Described splitting lock cushioning comprises fuse, closing coil, thyristor, diode, electric capacity and piezo-resistance, electric current is connected to power supply negative terminal from positive source through fuse FUSE2, switching winding TQ, thyristor Q2, diode U8, is parallel with a piezo-resistance R26 and a CBB capacitor C 7 on thyristor Q2; After piezo-resistance R23 and CBB capacitor C 6 and resistance R 2 are in parallel, with after backward diode VD8 connects, be connected between described power positive end and switching winding TQ and thyristor Q2.
Add that in control circuit the thyristor protection circuit processes the back electromotive force of generation; select the mode absorbing high-frequency surge voltage of polyester film capacitor (C6 ~ C9) with the piezo-resistance parallel connection in the capacitor of thyristor protection circuit; effectively suppressed the reverse voltage that the thyristor shutdown moment produces, guaranteed that thyristor can not puncture.
The flow chart that Fig. 7 is permanent magnet mechanism controller control circuit divide-shut brake of the present utility model, realize closing a floodgate and separating brake by energy storage capacitor point electric current, voltage being detected to judgement.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned execution mode, also comprises the technical scheme be comprised of above technical characterictic combination in any.
Claims (5)
1. a permanent magnet mechanism controller, it is characterized in that: comprise controller circuitry, energy storage capacitor, permanent-magnet manipulating mechanism and power module, described controller is connected with coil and the energy storage capacitor of described permanent-magnet manipulating mechanism respectively, described power module and energy storage capacitor, described controller comprises switching circuit, driving isolation circuit and control chip, described control chip is connected with the driving isolation circuit, and the driving isolation circuit is connected with switching circuit.
2. permanent magnet mechanism controller according to claim 1, it is characterized in that: described switching circuit comprises two thyristors, described two thyristors are connected in parallel.
3. permanent magnet mechanism controller according to claim 2, is characterized in that: also comprise a snubber circuit in described controller circuitry.
4. permanent magnet mechanism controller according to claim 1, is characterized in that: be provided with voltage detecting circuit and current detection circuit on described controller circuitry.
5. permanent magnet mechanism controller according to claim 1, is characterized in that: be provided with a displacement detecting circuit between described controller circuitry and permanent-magnet manipulating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320285695 CN203367136U (en) | 2013-05-23 | 2013-05-23 | Controller with permanent-magnet mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320285695 CN203367136U (en) | 2013-05-23 | 2013-05-23 | Controller with permanent-magnet mechanism |
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| CN203367136U true CN203367136U (en) | 2013-12-25 |
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| CN 201320285695 Expired - Fee Related CN203367136U (en) | 2013-05-23 | 2013-05-23 | Controller with permanent-magnet mechanism |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505310A (en) * | 2014-12-10 | 2015-04-08 | 安徽国科电力设备有限公司 | Fast circuit breaker driving mechanism at extreme environment temperature |
| CN107863265A (en) * | 2017-11-17 | 2018-03-30 | 国网青海省电力公司 | A kind of distribution breaker |
| CN117410129A (en) * | 2023-10-26 | 2024-01-16 | 武汉大学 | Accurate phase control closing device of parallel compensation capacitor bank based on fast switch |
-
2013
- 2013-05-23 CN CN 201320285695 patent/CN203367136U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505310A (en) * | 2014-12-10 | 2015-04-08 | 安徽国科电力设备有限公司 | Fast circuit breaker driving mechanism at extreme environment temperature |
| CN107863265A (en) * | 2017-11-17 | 2018-03-30 | 国网青海省电力公司 | A kind of distribution breaker |
| CN117410129A (en) * | 2023-10-26 | 2024-01-16 | 武汉大学 | Accurate phase control closing device of parallel compensation capacitor bank based on fast switch |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20140523 |