CN1068968C - Switchgear control apparatus - Google Patents
Switchgear control apparatus Download PDFInfo
- Publication number
- CN1068968C CN1068968C CN96198342A CN96198342A CN1068968C CN 1068968 C CN1068968 C CN 1068968C CN 96198342 A CN96198342 A CN 96198342A CN 96198342 A CN96198342 A CN 96198342A CN 1068968 C CN1068968 C CN 1068968C
- Authority
- CN
- China
- Prior art keywords
- coil
- magnetic flux
- control device
- magnetic
- flux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
- H01H47/325—Energising current supplied by semiconductor device by switching regulator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F2007/1894—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings minimizing impact energy on closure of magnetic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
- H01H2047/046—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current with measuring of the magnetic field, e.g. of the magnetic flux, for the control of coil current
Abstract
A switching device, in particular controlling device for contactors or relays generally has a magnet system comprising a coil with an armature and a yoke. A device has already been proposed for controlling the magnetic flux in the magnet system in a time-dependent manner according to a nominal curve calculated precisely for each magnet model. According to the invention, the control device (10) controls the magnetic flux within a predetermined range which is independent of time and travel. Preferably, the control device (10) controls the magnetic flux by means of the coil (1, 21) (coil flux). In particular, the narrow range set for the coil flux can be independent of time and travel, which is impossible with the prior art.
Description
The present invention relates to a kind of switchgear that is used for, control device in particular for contactor or relay, this control device has a magnetic system and an adjusting device, the former comprises armature and with the yoke of a coil, the latter is used for regulating the magnetic flux of magnetic system, utilize this control device, can regulate the magnetic flux in the magnetic system in a preset range, a kind of like this control device is open by GB2112213A.
The drive unit of switchgear comes work by a magnetic system usually, and up to the present existing magnetic system must be suitable with the voltage level and/or the type of drive of switchgear.A large amount of coil variations must be arranged for this reason.
Especially when adopting the contactor of DC driven, the moving stage of the suction of magnetic system known must a high electric current so that overcome spring force.In contrast, when magnetic system is closed, be enough to reliable maintenance once obvious less current.Holding power in order to reduce to adopt the DC driven contactor, adopted multiple different technologies: for example knownly adopt two solenoids, one is used to the stage of inhaling, and another is used for the sticking stage, and wherein said coil can contact by an auxiliary switch.This external sticking stage the someone advise adopting the coil voltage of pulse.Pulse performance decision active coil electric current.When contactor is reliably connected, through carrying out changing-over after the set time.
By the known a kind of wiring that is used for electromagnetic switchgear of DE3047488A1, wherein utilize a two point adjuster to regulate the electric current that is in the hold-in winding of closure state by a locking magnet.For reducing holding power, after given time period, conversion is used for the threshold value of Current Regulation.This by means of by one suddenly the magnetic flux measurement of aural sound try to achieve the measured parameter that is used for Current Control.In addition by the known a kind of electromagnetic switchgear that has the pivoted armature system of DE4129265A1, wherein utilize a Hall probe to record magnetic leakage flux and regulate the power of being defeated by coil by the magnetic flux scale parameter that calculating is tried to achieve.In DE3637133, equally measure magnetic leakage flux by forming a magnetic shunt that is used to discern minimum air void.Last wherein have a Hall sensor by the also known a kind of switch contact that has magnetic flux transducer of DE3246739 in the yoke of magnetic system, its signal is used for control electric excitation switch contact when reaching a determined magnetic flux.
In addition owing to studied contactor driving mechanism in the minutes " contact performance and switch " of the contactor seminar that the 13rd phase tutorial class of University of Karlsruhe was held October 4 to 6 nineteen ninety-five below the 101st page by the different principle regulating and controlling.A kind of device that is used for regulating magnetic system magnetic flux has wherein also been described especially, in this device, by the induced voltage that is wrapped in the coil on the magnet leg is carried out the specified predetermined value that integration is tried to achieve magnetic flux and calculated magnetic flux by the contrary analogy method of an accurate magnet model utilization.The magnetic flux nominal curve of one of special setting and time correlation thus.This magnetic flux produces actuating force and therefore sets up causal relation with mechanical movement.
The patent GB2112213A that has been mentioned by the front discloses a kind of switchgear that has electromagnetic drive mechanism, and this driving mechanism has the magnetic flux transducer and the analog regulation that is used for magnetic flux that are arranged in magnetic system.The high loss power that is the necessary control element of analog regulation thus produces conversion, causes heat to increase, thereby is necessary to adopt cooling body.Disclose a kind of control device that is used for switchgear by US3579052A in addition, wherein regulated and inhale power by the time.
The objective of the invention is to the control device of the switchgear that is used for the above-mentioned type is simplified, be devoted to reduce the holding power of magnetic system on the one hand, be devoted to improve its machinery and electricity usage life-span on the other hand.Make the control device of this simplification can be applicable to different switchgears in addition, make and only must seldom coil variations and this magnetic system itself can make forr a short time than so far.
Purpose of the present invention utilizes the control device of the described type of this paper preface to realize thus, promptly in order irrespectively to realize control with time and stroke, utilize the magnetic flux in the adjusting device regulating winding, wherein stipulated the upper threshold value and the lower threshold value of described preset range, and the scope width that can select the coil flux amount to be regulated according to desired switching frequency.
Utilize the present invention, can realize the softness connection of switchgear, make contact and and then make whole switchgear obtain longer useful life by reducing contact bounce thus with plain mode.Favourable in addition part is, only must one is used to inhale and the magnetic flux scope of sticking, and this scope can be adjusted to narrower scope.The scope width that described coil flux is regulated be usually located at magnetic flux 0.01% to 10% between, be preferably between 0.05% to 5%.The scope width of coil flux amount is determined by switching frequency.
The present invention is based on following uncommon cognition, promptly select rated value best and the state and the location independent of magnetic flux in the coil.The test of carrying out on a concrete contactor shows, for reach magnetic system at suction power under the opening and magnetic system the holding force under closure state, magnetic flux must need approximately equalised value.Under closure state, be enough to produce so big magnetic flux once obvious lower electric current, because bigger inductance and less magnetic force impedance are arranged this moment.In a given magnetic system by irrelevant to adaptive value that makes magnetic flux of the adjusting of coil turn and voltage level.
So just obtained remarkable advantage, in the prior art, when simplifying the structure of magnetic system, must select magnetic flux in advance according to the time with respect to prior art.Favourable in addition part also is, the characteristic that obtains on a concrete contactor also can be transferred on the contactor of other size.Especially by the pressure air gap in the yoke that changes magnetic system, also can the adaptive performance of corresponding acquisition.
Other details of the present invention and advantage are obtained by explanation and other dependent claims of accompanying drawing to embodiment by following, in the accompanying drawing:
Figure 1 shows that the principle structure of the control device that is used for a magnetic system;
Fig. 2 is the diagram that magnetic flux and current curve are conditioned in a close limit;
Figure 3 shows that the schematic diagram of the coil flux amount in the magnetic system of measuring by an ancillary coil;
Figure 4 shows that the schematic diagram of measuring coil flux by a magnet field probe;
Figure 5 shows that the structure of the magnetic system of forming by yoke and armature, wherein can see the pressure air gap.
Element identical or that play same function has identical Reference numeral in each accompanying drawing.These accompanying drawings partly are able to illustrated together.
In these accompanying drawings, coil of Reference numeral 1 expression, it is the parts that are used for a magnetic system of switchgear.Coil 1 as inductance is shown in Fig. 1 specially, and it links to each other with the terminals of AC network by a rectifier bridge 5.Coil 1 is furnished with a transducer 2 that is used for magnetic flux detected.
In Fig. 1,10 expressions were used to regulate the device of magnetic flux originally.It comprises a threshold recognition unit 11 and a voltage monitoring unit 12 and a controllable switch element 13.By this controllable switch element 13, for example a transistor is connected to rectifier terminal voltage on the described coil 1.
Voltage monitoring in the unit 12 is used for surpassing certain connection threshold value when voltage,, discharges the connection process at for example 70% of rated voltage o'clock.Can stop contactor on main contact, to keep hanging and clinkering thus.
After discharging, measure magnetic flux by coil 1, that is the coil flux amount, and do not measure the magnetic flux in the working clearance of magnetic system in the connection process, institute's measured value is used for regulating then control.For the coil flux amount is determined a upper threshold value and a lower threshold value.As long as the coil flux amount remains under the upper threshold value, this switch element 13 just remains closed.When surpassing upper threshold value, just disconnect described switch element 13, the coil flux amount diminishes again.Closed again described switch element 13 when being lower than lower threshold value.
Just can realize remaining in the predetermined threshold by such adjusting by the magnetic flux of coil 1, thus can be in such scope regulating winding magnetic flux, promptly between 0.01% of the coil flux amount and 10%, especially between 0.05% to 5%.
For adjustable range is further standardized, on the contactor 3TF56 of Siemens Company, carry out overtesting, to obtain to be used for the basic data of analog computation.This result of the test is shown in Figure 2, and magnetic flux and relevant electric current I as the function of time wherein are shown respectively.Shown in legend, for one 1.35 to 1.4V.s magnetic flux, the switching frequency of a 400Hz is realized about 3.6% window width.Because expected frequency is outside high scope as much as possible, promptly on about 20KHz, thereby make the window width value below 0.01%.Therefore can determine a narrow range that up to the present reckons without by this way.
Can know further that by Fig. 2 coil flux amount φ (t) is irrelevant with the time.Then just in time opposite concerning current curve I (t), descend behind about 50ms according to the curve electric current I.
In order in predetermined close limit, to regulate magnetic flux, be necessary to adopt known distinct methods search coil magnetic flux.
As shown in Figure 3, magnetic system 20 is by coil 21 (corresponding to the coil among Fig. 1 1), and yoke 22 and armature 23 constitute.Be installed on an ancillary coil 24 on the yoke 22 of magnetic system 20, it is used to measure induced voltage.This induced voltage is quadratured to the time and is obtained a value that is used to change coil flux.Its accuracy that can reach is enough in the moving stage of suction.Owing to can not grasp at the induced voltage in sticking stage, the offset error in measuring process may cause the drift of integrator, thereby must take the indemnifying measure that is fit to.
As shown in Figure 4, a field probe 34, this probe measurement B (acceleration) magnetic field or H (all strong) magnetic field are installed on same magnetic system 20 as shown in Figure 3.One fluting 25 may must be set in magnetic system 20 for this reason.Described B magnetic field or H magnetic field are the mensuration to the magnetic flux that passes through coil 21.Particularly advantageous in this case is not need integrator.
Fig. 5 is combined by Fig. 1 and Fig. 4 basically.In electric control module, the control circuit that is used for coil 1 shown in Figure 1 or coil shown in Figure 4 21 is by a diode bridge joint.In groove 25, insert a suitable field probe 34.
In Fig. 5, utilize this point, promptly in yoke 22, preferably had one to force air gap 30.Usually when making the yoke of forming by the sheet iron plate, just be provided with this pressure air gap and also filled, so that these two yoke parts firmly connect with a kind of film made of insulating material.
In layout shown in Figure 5,, forcing air gap 30 and slotting and realize a magnetic voltage divider between 25 by slotting 25 and force the special geometry of air gap 30.Influence magnetic property by changing geometry.One narrower pressure air gap makes to the necessary coil flux of sticking reduces a lot, yet for inhaling the but almost not influence of the necessary coil flux amount of power for applying in off-state.Therefore force the width b of air gap to change especially to can be applicable to regulate and fit in the required magnetic flux of closure state, it is had and the equal value of required magnetic flux under off-state.
Claims (11)
1. one kind is used for switchgear, especially the control device of contactor or relay, it has a magnetic system and an adjusting device, the former has a coil of band armature and yoke, the latter is used for regulating the magnetic flux of magnetic system, utilize this adjusting device in a preset range, to regulate magnetic flux, it is characterized in that, in order irrespectively to regulate with time and stroke, utilize the magnetic flux in adjusting device (10) regulating winding (1,21), wherein to coil (1,21) magnetic flux scope dictates one upper threshold value and a lower threshold value, the scope width of selecting coil magnetic flux to be regulated according to desired switching frequency.
2. control device as claimed in claim 1 is characterized in that, the scope width that the coil flux amount is regulated magnetic flux 0.01% to 10% between, be preferably between 0.05% to 5%.
3. control device as claimed in claim 1 is characterized in that, measures the magnetic flux in connection and holding course and uses it for adjusting.
4. control device as claimed in claim 1 is characterized in that, described coil (1) is connected on the terminal voltage by a controllable switch element (15) and a rectifier (5).
5. control device as claimed in claim 1 is characterized in that, described adjusting device (10) comprises the unit (12) of a monitoring voltage, utilizes it to surpass the connection threshold value of stipulating at voltage,, discharges the connection process at for example 70% of rated voltage o'clock.
6. as the described control device of above-mentioned each claim, it is characterized in that the ancillary coil (24) that is provided with a band integrator (26) is used to measure magnetic flux.
7. control device as claimed in claim 6 is characterized in that, described ancillary coil (24) is located on the yoke (22) of magnetic system (20).
8. as each described control device in the claim 1 to 7, it is characterized in that, be provided with a field probe (34) for measuring coil magnetic flux.
9. control device as claimed in claim 8 is characterized in that, described field probe (34) be arranged on magnetic system (20) yoke (22) one the fluting (25) in.
10. control device as claimed in claim 9, the yoke of wherein said magnetic system have one forces the air gap, it is characterized in that described fluting (25) in yoke (22) and pressure air gap (30) constitute a magnetic voltage divider.
11. control device as claimed in claim 10 is characterized in that, described pressure air gap has a previously selected width (b).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19545512.6 | 1995-12-05 | ||
| DE19545512 | 1995-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1202269A CN1202269A (en) | 1998-12-16 |
| CN1068968C true CN1068968C (en) | 2001-07-25 |
Family
ID=7779352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96198342A Expired - Fee Related CN1068968C (en) | 1995-12-05 | 1996-11-28 | Switchgear control apparatus |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0865660B1 (en) |
| JP (1) | JP2000501550A (en) |
| CN (1) | CN1068968C (en) |
| DE (1) | DE59604468D1 (en) |
| WO (1) | WO1997021237A2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1300862A1 (en) * | 2001-10-04 | 2003-04-09 | Moeller GmbH | Electronic apparatus for controlling a contactor |
| DE10332595B4 (en) * | 2003-07-17 | 2008-02-14 | Siemens Ag | Device and method for driving electrical switching devices |
| JP2009521074A (en) * | 2005-12-22 | 2009-05-28 | シーメンス アクチエンゲゼルシヤフト | Switching device operating method and operating device |
| DE102012106922A1 (en) | 2012-07-30 | 2014-01-30 | Eaton Electrical Ip Gmbh & Co. Kg | Device for controlling the electromagnetic drive of a switching device, in particular a contactor |
| DE102012112692A1 (en) * | 2012-12-20 | 2014-06-26 | Eaton Electrical Ip Gmbh & Co. Kg | Device and method for operating an electromagnetic switching device drive |
| DE102013224662A1 (en) * | 2013-12-02 | 2015-06-03 | Siemens Aktiengesellschaft | Electromagnetic actuator |
| JP6248871B2 (en) * | 2014-09-05 | 2017-12-20 | 株式会社デンソー | Electromagnetic actuator |
| FR3098637B1 (en) * | 2019-07-08 | 2021-10-15 | G Cartier Tech | SELF-CONTROLLED ELECTROMECHANICAL ACTUATOR |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3579052A (en) * | 1968-09-21 | 1971-05-18 | Nippon Denso Co | System for driving a. d. c. electromagnet |
| GB2112213A (en) * | 1981-12-21 | 1983-07-13 | Gen Electric | Electromagnetic contractor with flux sensor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3047488A1 (en) * | 1980-12-17 | 1982-07-22 | Brown, Boveri & Cie Ag, 6800 Mannheim | ELECTRONIC CIRCUIT ARRANGEMENT FOR AN ELECTROMAGNETIC SWITCHGEAR |
| US4735517A (en) * | 1985-10-31 | 1988-04-05 | Texas Instruments Incorporated | Printer having flux regulator |
| US4608620A (en) * | 1985-11-14 | 1986-08-26 | Westinghouse Electric Corp. | Magnetic sensor for armature and stator |
| DE4129265A1 (en) * | 1991-08-30 | 1993-03-04 | Mannesmann Ag | ELECTROMAGNETIC SWITCHGEAR |
-
1996
- 1996-11-28 EP EP96946021A patent/EP0865660B1/en not_active Expired - Lifetime
- 1996-11-28 JP JP9520862A patent/JP2000501550A/en not_active Ceased
- 1996-11-28 CN CN96198342A patent/CN1068968C/en not_active Expired - Fee Related
- 1996-11-28 WO PCT/DE1996/002283 patent/WO1997021237A2/en active IP Right Grant
- 1996-11-28 DE DE59604468T patent/DE59604468D1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3579052A (en) * | 1968-09-21 | 1971-05-18 | Nippon Denso Co | System for driving a. d. c. electromagnet |
| GB2112213A (en) * | 1981-12-21 | 1983-07-13 | Gen Electric | Electromagnetic contractor with flux sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000501550A (en) | 2000-02-08 |
| WO1997021237A3 (en) | 1997-08-21 |
| WO1997021237A2 (en) | 1997-06-12 |
| CN1202269A (en) | 1998-12-16 |
| EP0865660A2 (en) | 1998-09-23 |
| EP0865660B1 (en) | 2000-02-16 |
| DE59604468D1 (en) | 2000-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1039102B1 (en) | A sensorless method to determine the static armature position in an electronically controlled solenoid device | |
| US7739058B2 (en) | Condition-monitoring device and switch-control device provided with the same | |
| KR101360754B1 (en) | Method for determining contact erosion of an electromagnetic switching device, and electromagnetic switching device comprising a mechanism operating according to said method | |
| CN1261951C (en) | Method for determining wear of a switchgear contacts | |
| US6538347B1 (en) | Electrical switchgear with synchronous control system and actuator | |
| US20100165535A1 (en) | Method and Device for Operating a Switching Device | |
| US5991143A (en) | Method for controlling velocity of an armature of an electromagnetic actuator | |
| EP0832496B1 (en) | Switching equipment | |
| CA1292491C (en) | Electromagnetic contactor with control circuit for providing acceleration, coast and grab functions | |
| KR100415032B1 (en) | Detection of contact position from coil current in electromagnetic switches having ac or dc operated coils | |
| CN102931023B (en) | Realization of control method and device for vacuum circuit breaker based on coil current | |
| CN1068968C (en) | Switchgear control apparatus | |
| CA1292493C (en) | Electromagnetic contactor with reduced noise magnetic armature | |
| CN1252768C (en) | Electromagnetic switchgear comprising controlled drive, corresponding method and circuit | |
| CN113960461A (en) | Method for diagnosing the operating state of an electrical switching device and electrical switching device | |
| CA1290792C (en) | Electromagnetic contactor with current regulated electromagnetic coil for holding the contacts closed | |
| DE19535211C2 (en) | Method for controlling armature movement for a switching device | |
| CN100461323C (en) | Device and method for controlling electric switching devices | |
| CN101944442B (en) | Servo control via magnetic compensator and contactor comprising such a compensator | |
| CA2932214A1 (en) | Electromagnetic actuator | |
| WO1999000811A1 (en) | A method of connecting and disconnecting an ac voltage to/from a load, as well as a switch comprising a relay | |
| CN100338471C (en) | Method and apparatus for controlling magnetically actuated power switching device | |
| GB2201518A (en) | Determining when an input control switch signal is true or false | |
| CN113960460A (en) | Method for diagnosing the operating state of an electrical switching device and electrical switching device | |
| CN1083610C (en) | Reduced tensioning time for electronically controlled switch contactors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |