CN104167325B - Control circuit and method for three-coil high-pressure permanent magnet operating mechanism - Google Patents
Control circuit and method for three-coil high-pressure permanent magnet operating mechanism Download PDFInfo
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- CN104167325B CN104167325B CN201410371473.2A CN201410371473A CN104167325B CN 104167325 B CN104167325 B CN 104167325B CN 201410371473 A CN201410371473 A CN 201410371473A CN 104167325 B CN104167325 B CN 104167325B
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- separating brake
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Abstract
The invention discloses a control circuit and method for a three-coil high-pressure permanent magnet operating mechanism. The control circuit comprises a power module, a control signal module, a current monitoring module and a driving circuit, wherein the power module is used for providing working voltage for the control signal module, the current monitoring module and the driving circuit, the control signal module is used for providing driving signals for the driving circuit so as to drive corresponding switch tubes, the current monitoring module is used for monitoring magnitude of current in coils in real time and feeding information back to the control signal module so that the information can be used as reference of a driving strategy, and the driving circuit comprises a closing coil driving circuit S1, a starting-buffering coil driving circuit S2 and an opening solenoid driving circuit S3. According to the control circuit and method, the movable iron core buffering effect is achieved through follow current, harm caused by overhigh coil current to the mechanism and the control circuit is avoided, and the requirement for movable iron core buffering is met; the structure of the circuit is simplified.
Description
Technical field
The present invention relates to high-pressure vacuum breaker field, the control electricity of especially a kind of three-winding high voltage permanent operating mechanism
Road and control method.
Background technology
The joined operating mechanism of vacuum circuit breaker generally has electromagnetic type, spring and three kinds of magneto.Wherein magneto actuating
Mechanism relies on that it is highly reliable, low energy consumption, non-maintaining, and pass many advantages, such as achievable simultaneously operating, increasingly causing people
Note.High-pressure vacuum breaker split away from requirement larger, this requires that operating mechanism has higher divide-shut brake speed.Such as 126
The clearance between open contacts that kV high voltage vacuum interrupter needs in 60 mm, needs point, closing speed be 3.5m/s and 1. respectively
3m/s, compared with the vacuum interrupter of 12 kV medium voltage breakers, opens away from for its 6 times about, point, closing speed be its 2 times of left sides
Right.It is additionally, since dynamic iron core stroke larger, when causing dynamic iron core to start, air-gap reluctance is very big, and this is accomplished by magnetizing coil and is passed through
Larger exciting curent, thus a series of problems, such as cause temperature rise, control.
These problems limit the application in high-pressure vacuum breaker field for the permanent magnet mechanism.Simultaneously as traditional permanent magnetic motor
The problem of structure structure, in divide-shut brake stroke latter end, dynamic iron core can accelerate, and has very big impulsive force when terminating motion,
Contact bounce can be caused when closing a floodgate, and reduce the contact life-span.
Content of the invention
Goal of the invention：One purpose is to build a kind of control circuit of three-winding high voltage permanent operating mechanism and controlling party
Method, to solve at least part of problem of prior art presence.
Technical scheme：One kind is used for controlling three-winding high voltage permanent operating mechanism, including power module, control signal mould
Block, current monitoring module and drive circuit；
Described power module is used for providing running voltage for control signal module, current monitoring module and drive circuit；
Described control signal module is used for providing drive signal to drive circuit, drives respective switch pipe；
Described current monitoring module is used for size of current in real-time monitoring coil, feeds back information to control signal module and makees
For driving the reference of strategy；
Described drive circuit includes closing coil drive circuit S1, startup-buffer coil drive circuit S2 and separating brake line
Circle drive circuit S3；
Described closing coil drive circuit S1 includes combined floodgate electric capacity C1, main driving switch pipe A, continued flow switch pipe B, closing line
Circle L1, the first reverse fly-wheel diode 1 and the second reverse fly-wheel diode 2；Main driving switch pipe A and continued flow switch pipe B series connection
At closing coil L1 two ends, and it is connected to combined floodgate electric capacity C1 two ends, fly-wheel diode 1 is in parallel with coil L1 and continued flow switch pipe B,
Fly-wheel diode 2 is in parallel with main driving switch pipe A and coil L1.
Described startup-buffer coil drive circuit S2 includes：Combined floodgate activate switch pipe F, separating brake activate switch pipe E, start-
Buffer coil L2 and the 5th fly-wheel diode 5；5th fly-wheel diode 5 is in parallel with startup-buffer coil L2, and starts with separating brake
Switching tube E, the emitter stage of combined floodgate activate switch pipe F are connected.
Described switching winding drive circuit S3 includes：Separating brake electric capacity C2, the second main driving switch pipe C, the second continued flow switch
Pipe D, switching winding L3, the 3rd reverse fly-wheel diode 3 and the 4th reverse fly-wheel diode 4；Second main driving switch pipe C and
Two continued flow switch pipe D are connected on switching winding L3 two ends, and are connected to separating brake electric capacity C2 two ends, the 3rd reverse fly-wheel diode 3
In parallel with switching winding L3 and the second continued flow switch pipe D, the 4th reverse fly-wheel diode 4 and the second main driving switch pipe C and line
Circle L3 is in parallel.
Described startup-buffer coil drive circuit S2 is connected with combined floodgate electric capacity C1 by separating brake activate switch pipe E, by closing
Lock activate switch pipe F is connected with separating brake electric capacity C2.
A kind of control method of above-mentioned three-winding high voltage permanent operating mechanism control circuit, the method includes：In separating brake
Or when closing a floodgate, control corresponding capacitance to be that startup-buffer coil L2 discharges；
In separating brake or combined floodgate, control respective switch pipe to close and realize continuous current circuit to discharge capacity reverse charging；
In separating brake or making process, electric current on real-time monitoring discharge coil, controlling switch pipe ON time, adjust line
Circle discharge time.
In further scheme, when closing a floodgate, separating brake electric capacity C2 is controlled to discharge to startup-buffer coil L2；
In separating brake, combined floodgate electric capacity C1 is controlled to discharge to startup-buffer coil L2.
In further scheme, when closing a floodgate, the first fly-wheel diode 1 and the second afterflow two are passed through in closing coil L1 afterflow
Pole pipe 2 charges to combined floodgate electric capacity C1；
In separating brake, switching winding L3 afterflow passes through the 3rd fly-wheel diode 3 and the 4th fly-wheel diode 4 to separating brake electric capacity
C2 charges.
In further scheme, separating brake, combined floodgate, in startup-buffer coil, discharge current direction is same direction all the time,
And combined floodgate activate switch pipe F and separating brake activate switch pipe E is turned off when current value reaches certain numerical value, ensureing circuital current not
Using afterflow, iron core is moved to mechanism in the case of excessive and enter row buffering.
Beneficial effect：Circuit design is become double capacitance structures by the present invention, completes mechanism and move in the case of not increasing electric capacity
Make, simplify circuit structure；In addition, to electric current monitor in real time in startup-buffer coil, stopping when electric current reaches setting value putting
Electricity, rely on afterflow to realize dynamic iron core cushioning effect, it is to avoid the excessive harm to mechanism and control circuit of coil current, simultaneously full
Foot dynamic iron core buffer requirements；Finally, realize coil discharge afterflow by afterflow controlling switch reversely discharge capacity to be charged, reduce
Electric capacity electric discharge pressure drop.
Brief description
Fig. 1 is the structural representation of control circuit of the present invention.
Fig. 2 is the structural representation of operating mechanism of the present invention；
1 guide rod, 2 permanent magnet holding mechanisms, 3 electromagnetic drive mechanisms, 4 opening-cores, 5 combined floodgate permanent magnets, 6 separating brakes
Fixed core, 7 separating brake permanent magnets, 8 holdings dynamic iron core, 9 nonmagnetic substance pads, 10 closing coils, 11 startups-alignment buffer
Circle, 12 switching windings, 13 driving fixed cores, the dynamic iron core of 14 drivings.
Specific embodiment
As depicted in figs. 1 and 2, the three-winding high voltage permanent operating mechanism of the present invention mainly includes guide rod 1, and arranged for interval exists
On guide rod and the holding dynamic iron core 8 that rotates with it and drive dynamic iron core 14.Wherein, keep dynamic iron core at be provided with combined floodgate permanent magnet 5,
Combined floodgate permanent magnet is fixed on the permanent magnet holding mechanism 2 keeping dynamic iron core, and is arranged at the conjunction inside and outside combined floodgate permanent magnet
Lock static iron core 4.Dynamic iron core periphery is driven to be arranged at intervals with closing coil 10, start buffer coil 11 and switching winding 12, and
Drive static iron core 13 and electromagnetic drive mechanism 3；The side driving dynamic iron core is provided with non magnetic pad 9, which is provided with separating brake permanent magnetism
Body 7, permanent magnet maintaining body 2 and the separating brake static iron core 6 being arranged at separating brake permanent magnet both sides.
Devise a kind of circuit for controlling above-mentioned three-winding high voltage permanent operating mechanism for this：Including power module,
Control signal module, current monitoring module and drive circuit；
Power module is used for providing running voltage for control signal module, current monitoring module and drive circuit；Control letter
Number module is used for providing drive signal to drive circuit, drives respective switch pipe；Current monitoring module is used for real-time monitoring coil
Middle size of current, feeds back information to control signal module as the reference driving strategy；Drive circuit includes closing coil and drives
Galvanic electricity road S1, startup-buffer coil drive circuit S2 and switching winding drive circuit S3；
As shown in figure 1, closing coil drive circuit S1 include combined floodgate electric capacity C1, main driving switch pipe A, continued flow switch pipe B,
Closing coil L1, the first reverse fly-wheel diode 1 and the second reverse fly-wheel diode 2；Main driving switch pipe A and continued flow switch pipe
B is connected on closing coil L1 two ends, and is connected to combined floodgate electric capacity C1 two ends, fly-wheel diode 1 and coil L1 and continued flow switch pipe
B is in parallel, and fly-wheel diode 2 is in parallel with main driving switch pipe A and coil L1.
Startup-buffer coil drive circuit S2 includes：Combined floodgate activate switch pipe F, separating brake activate switch pipe E, startup-buffering
Coil L2 and the 5th fly-wheel diode 5；5th fly-wheel diode 5 is in parallel with startup-buffer coil L2, and with separating brake activate switch
Pipe E, the emitter stage of combined floodgate activate switch pipe F are connected.
Switching winding drive circuit S3 includes：Separating brake electric capacity C2, the second main driving switch pipe C, the second continued flow switch pipe D,
Switching winding L3, the 3rd reverse fly-wheel diode 3 and the 4th reverse fly-wheel diode 4；Second main driving switch pipe C and second continues
Stream switching tube D is connected on switching winding L3 two ends, and is connected to separating brake electric capacity C2 two ends, the 3rd reverse fly-wheel diode 3 with point
Brake cable circle L3 and the second continued flow switch pipe D parallel connection, the 4th reverse fly-wheel diode 4 and the second main driving switch pipe C and coil L3
In parallel.
Startup-buffer coil drive circuit S2 is connected with combined floodgate electric capacity C1 by separating brake activate switch pipe E, is opened by closing a floodgate
Dynamic switching tube F is connected with separating brake electric capacity C2.
The control method of above-mentioned three-winding high voltage permanent operating mechanism control circuit comprises the steps：
For switching tube A-F all in closed mode, during combined floodgate, continued flow switch pipe B turns on original state, and subsequently close a floodgate master
Driving switch pipe A and combined floodgate activate switch pipe F conducting, combined floodgate electric capacity C1 is by main driving switch pipe A, continued flow switch pipe B to conjunction
Brake cable circle L1 discharges, and separating brake electric capacity C2 passes through switching tube F to startup-buffer coil L2 electric discharge simultaneously, and mechanism starts action.
Before feed motion terminates, size of current in current monitoring module real-time monitoring startup-buffer coil L2, one
Denier reaches upper current limit, just turns off combined floodgate activate switch pipe F, stops startup-buffer coil L2 is discharged, startup-buffer coil
Electric current in L2 carries out afterflow by the 5th fly-wheel diode 5.
Electric current in mechanism action early stage, startup-buffer coil L2 moves iron core and plays assistant starting effect, dynamic to mechanism
Make stage to dynamic unshakable in one's determination cushioning effect.
After the completion of action is detected, the main driving switch pipe A that closes a floodgate closes, and combined floodgate electric capacity C1 stops closing coil being put
Electricity, subsequent continued flow switch pipe B closes, and the electric current in closing coil is right by the first fly-wheel diode 1, the second continued flow switch pipe 2
Combined floodgate electric capacity C1 reverse charging, compensating electric capacity energy.
So far all switching tubes restPose.If not needing afterflow that electric capacity is charged, afterflow can be postponed and open
Close the ON time of pipe B, in coil, the first fly-wheel diode 1 is directly passed through in afterflow and continued flow switch pipe B forms loop.
Separating brake process is similar to, and is briefly described below：In separating brake, combined floodgate electric capacity C1 is controlled to put to startup-buffer coil L2
Electricity；Switching winding L3 afterflow is passed through the 3rd fly-wheel diode 3 and the 4th fly-wheel diode 4 and is charged to separating brake electric capacity C2；
During separating brake, electric current on real-time monitoring discharge coil, controlling switch pipe ON time, adjust coil discharge
Time.Separating brake, combined floodgate, in startup-buffer coil, discharge current direction is same direction all the time, and reaches a fixed number in current value
Turn off combined floodgate activate switch pipe F and separating brake activate switch pipe E during value, ensureing to utilize afterflow in the case that circuital current is not excessive
Iron core is moved to mechanism and enters row buffering.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, multiple equivalents can be carried out to technical scheme, this
A little equivalents belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy no longer separately illustrates.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it equally should be considered as content disclosed in this invention.
Claims (3)
1. a kind of control three-winding high voltage permanent operating mechanism circuit it is characterised in that：Including power module, control signal mould
Block, current monitoring module and drive circuit；
Described power module is used for providing running voltage for control signal module, current monitoring module and drive circuit；
Described control signal module is used for providing drive signal to drive circuit, drives respective switch pipe；
Described current monitoring module is used for size of current in real-time monitoring coil, feeds back information to control signal module as drive
The reference of dynamic strategy；
Described drive circuit includes closing coil drive circuit S1, startup-buffer coil drive circuit S2 and switching winding drives
Galvanic electricity road S3；
Described closing coil drive circuit S1 includes：Combined floodgate electric capacity C1, main driving switch pipe A, continued flow switch pipe B, closing coil
L1, the first reverse fly-wheel diode（1）With the second reverse fly-wheel diode（2）；Main driving switch pipe A and continued flow switch pipe B string
It is associated in closing coil L1 two ends, and be connected to combined floodgate electric capacity C1 two ends, the first reverse fly-wheel diode（1）With closing coil L1 and
Continued flow switch pipe B is in parallel, the second reverse fly-wheel diode（2）In parallel with main driving switch pipe A and closing coil L1；
Described startup-buffer coil drive circuit S2 includes：Combined floodgate activate switch pipe F, separating brake activate switch pipe E, startup-buffering
Coil L2 and the 5th fly-wheel diode（5）；5th fly-wheel diode（5）In parallel with startup-buffer coil L2, and start with separating brake
Switching tube E, the emitter stage of combined floodgate activate switch pipe F are connected；
Described switching winding drive circuit S3 includes：Separating brake electric capacity C2, the second main driving switch pipe C, the second continued flow switch pipe D,
Switching winding L3, the 3rd reverse fly-wheel diode（3）With the 4th reverse fly-wheel diode（4）；Second main driving switch pipe C and
Two continued flow switch pipe D are connected on switching winding L3 two ends, and are connected to separating brake electric capacity C2 two ends, the 3rd reverse fly-wheel diode
（3）In parallel with switching winding L3 and the second continued flow switch pipe D, the 4th reverse fly-wheel diode（4）Driving switch pipe C main with second
And switching winding L3 is in parallel；Described startup-buffer coil drive circuit S2 passes through separating brake activate switch pipe E and combined floodgate electric capacity C1 and goes here and there
Connection, is connected with separating brake electric capacity C2 by combined floodgate activate switch pipe F.
2. according to claim 1 control three-winding high voltage permanent operating mechanism circuit it is characterised in that：Closing a floodgate
When, control separating brake electric capacity C2 to discharge to startup-buffer coil L2；In separating brake, control combined floodgate electric capacity C1 to startup-buffer coil
L2 discharges.
3. the circuit controlling three-winding high voltage permanent operating mechanism according to claim 2 is it is characterised in that closing a floodgate
When, the first reverse fly-wheel diode is passed through in closing coil L1 afterflow（1）With the second reverse fly-wheel diode（2）To combined floodgate electric capacity C1
Charge；In separating brake, the 3rd reverse fly-wheel diode is passed through in switching winding L3 afterflow（3）With the 4th reverse fly-wheel diode（4）
Charge to separating brake electric capacity C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371473.2A CN104167325B (en) | 2014-07-30 | 2014-07-30 | Control circuit and method for three-coil high-pressure permanent magnet operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410371473.2A CN104167325B (en) | 2014-07-30 | 2014-07-30 | Control circuit and method for three-coil high-pressure permanent magnet operating mechanism |
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| CN104167325A CN104167325A (en) | 2014-11-26 |
| CN104167325B true CN104167325B (en) | 2017-02-22 |
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| CN201410371473.2A Active CN104167325B (en) | 2014-07-30 | 2014-07-30 | Control circuit and method for three-coil high-pressure permanent magnet operating mechanism |
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| CN104658823B (en) * | 2015-02-09 | 2017-06-06 | 广州供电局有限公司 | With permanent magnet mechanism circuit-breaker and its speed-regulating control device and method |
| CN114006401A (en) * | 2021-10-25 | 2022-02-01 | 无锡市欧瑞杰电子科技有限公司 | Double-coil permanent magnet driving circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6631067B2 (en) * | 2001-12-28 | 2003-10-07 | Visteon Global Technologies, Inc. | Electromagnetic actuator for engine valves |
| CN2678102Y (en) * | 2003-07-07 | 2005-02-09 | 浙江森源自动化成套设备有限公司 | Permanent magnetic electric control mechanism of vacuum circuit breaker |
| CN201910366U (en) * | 2010-12-06 | 2011-07-27 | 东南大学 | Fast control mechanism for extra-high voltage vacuum circuit breaker |
| CN102290279A (en) * | 2011-06-30 | 2011-12-21 | 中国人民解放军海军工程大学 | High speed vacuum direct current (DC) current limiting circuit breaker |
| CN103474287B (en) * | 2013-09-05 | 2015-09-30 | 北京交通大学 | Two dynamic permanent-magnet manipulating mechanism unshakable in one's determination |
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Effective date of registration: 20230601 Address after: No.18, Wubian Avenue, Youyi Industrial Zone, Songling Town, Wujiang District, Suzhou City, Jiangsu Province Patentee after: WUJIANG TRANSFORMER Co.,Ltd. Address before: 210096 No. four archway, 2, Jiangsu, Nanjing Patentee before: SOUTHEAST University |
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