CN104733230B - A kind of permanent magnet intelligent contactor of the ensured normality separating brake with the controlled counter-force of electromagnetism - Google Patents
A kind of permanent magnet intelligent contactor of the ensured normality separating brake with the controlled counter-force of electromagnetism Download PDFInfo
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- CN104733230B CN104733230B CN201510167770.XA CN201510167770A CN104733230B CN 104733230 B CN104733230 B CN 104733230B CN 201510167770 A CN201510167770 A CN 201510167770A CN 104733230 B CN104733230 B CN 104733230B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
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- 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
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Abstract
The present invention relates to a kind of permanent magnet intelligent contactor of the ensured normality separating brake with the controlled counter-force of electromagnetism, including mechanical system and electric-control system, mechanical system includes to move iron core, fixed core, coil, dynamic iron core connector, lower insulation shell, upper insulation shell, touch spring, moving contact part, static contact part and two non-linear reaction springs；Electric-control system is connected with coil；Electric-control system includes CPU control module and divide-shut brake control module, realizes the divide-shut brake control of the permanent magnet intelligent contactor；Iron core is wherein moved for permanent magnet and semi-hard magnetic alloy or the iron core of the iron core combination that makes nothing remanent magnetism iron core；Permanent magnet is embedded in the bottom of dynamic core limb, and three bread of permanent magnet are wrapped up in by semi-hard magnetic alloy or the core limb that makes nothing remanent magnetism iron core respectively.The present invention can save the loss power of the overwhelming majority in unshakable in one's determination and coil, while reducing or abating the noise, reduce the temperature rise of coil, extend the life-span of permanent magnet intelligent contactor.
Description
Technical field
The present invention relates to high and low voltage switch electrical equipment field of intelligent control, and in particular to a kind of with the controlled counter-force of electromagnetism can
Ensure the permanent magnet intelligent contactor of normality separating brake.
Background technology
Liu Yushu etc. is published in《Metal material is studied》The 6th phase of volume 15 in December, 1989 " half-hard magnetic material magnetic protect
Hold in type contactor and apply " text describes magnetic latching contactor is have higher remanent magnetism and coercivity using half-hard magnetic material
Feature within the specific limits can be controlled, added electric current back core to have remanent magnetism, need not be energized when contactor works.And,
As the sticking state of the contactor between operationally is the remanent magnetism by half-hard magnetic material, the shadow of voltage pulsation therefore will not be subject to
Ring.Geng Cui etc. is published in《Chinese New Products》21st phase in 2012 " bistable state twin coil permanent magnet contactor performance evaluation "
One text describes permanent magnet mechanism and achieves tradition machinery or electromagnetic mechanism by permanent magnet is combined with existing electromagnet
Repertoire.Permanent magnet can provide stable magnetic field, and this is an advantage, but be also shortcoming under normality, and contactor can be made to exist
Do not have inseparable in the case of electricity, therefore the present invention devises a nonlinear spring to offset to solve this problem
The magnetic force of permanent magnet makes contactor normally can separate under normal conditions.By semi-hard magnet remanent magnetism material iron core or by coil
The reliable silent power-saving sticking of contactor is realized in the magnetic field for adding low-voltage direct to produce.For making sticking reliable while using low voltage intermittent
Plus magnetic.There is larger coercitive characteristic using permanent magnet, and using control system and rectification/transformation loop closing coil
Produce and permanent magnet magnetic force quite but magnetic direction conversely, make contactor quick acting switching-off using the repulsion between homopolar field.
Content of the invention
In view of this, it is an object of the invention to provide a kind of permanent magnetism of the ensured normality separating brake with the controlled counter-force of electromagnetism
Body intelligent contactor, using the pulse dc high voltage of AC rectification, excitatory adhesive, self-sustaining or low pressure sticking, electromagnetism are controlled anti-by force
The control strategy of power separating brake.Reaction spring is the nonlinear spring made according to contactor suction characteristic variations rule, it set
Meter purpose is in the case of not affecting to close a floodgate, and overcomes permanent magnet suction, so as to ensure that permanent magnet contactor is under normal conditions
Gate-dividing state；Sticking is kept to be used when permanent magnet is closed a floodgate not as contactor, but as generation controllable electric during contactor separating brake
Magnetic counter-force is used.The loss power of the overwhelming majority in unshakable in one's determination and coil can be saved, while reducing or abating the noise, reduces coil
Temperature rise, extends the life-span of intelligent contactor.
The present invention is realized using below scheme：A kind of permanent magnet intelligence of the ensured normality separating brake with the controlled counter-force of electromagnetism
Energy contactor, including mechanical system and electric-control system, the mechanical system includes to move iron core, fixed core, coil, dynamic connection unshakable in one's determination
Part, lower insulation shell, upper insulation shell, touch spring, moving contact part, static contact part and two non-linear counter-force bullets
Spring；The dynamic iron core connector is lateral cuboid structure, and in the middle part of the dynamic iron core connector, upper surface is provided with vertically upward
Touch spring, the upper end of the touch spring are connected with described moving contact part, the moving contact part distance below
Place is provided with static contact part, the moving contact part and static contact component contact under "on" position；The dynamic iron core connector
Middle lower surface is provided with described dynamic iron core, and during switch closing and switch opening, the dynamic iron core connector can be in the lower insulation shell
Slide in the guide groove of body, be correspondingly provided with the dynamic iron core distance below fixed core in order to formed double-U-shaped to roof construction or
To roof construction, the fixed core is fixed on the lower insulation shell double E types, and the coil is wound in the fixed core；Described
Dynamic iron core connector two ends lower surface is respectively equipped with a non-linear reaction spring vertically downward, the non-linear reaction spring
Lower end is connected to the lower insulation shell；The electric-control system is connected with the coil；Described electric-control system includes that a CPU is controlled
Molding block and a coupled divide-shut brake control module, the divide-shut brake in order to realize the intelligent contactor control, wherein
The CPU control module is single-chip microcomputer, including a data storage cell, a data processing unit and a control unit.
Further, described divide-shut brake control module includes that the first commutating circuit, the second commutating circuit, voltage transformation are returned
Road, plus/degaussing control loop, by force excitatory starting element, in order to control by force the first control loop of excitatory starting element break-make with
Second control loop and the 3rd control loop in order to control plus/degaussing control loop is opened and closed；First control loop,
The input of two control loops and the 3rd control loop is connected with the control unit of CPU, first commutating circuit, described
The input in two commutating circuits and the voltage transformation loop is also connected with a single phase poaer supply；First control loop,
One end phase of one commutating circuit, second control loop, the output end of the second commutating circuit and the excitatory by force starting element
Even, the other end of the excitatory by force starting element is connected with the coil；The output end of the 3rd control loop with described plus/
The input of degaussing control loop is connected, and described plus/degaussing control loop output end is connected with the coil.
Further, the dynamic iron core is permanent magnet and semi-hard magnetic alloy or the U-shaped iron core combination that makes nothing remanent magnetism iron core
U-shaped iron core；The permanent magnet is embedded in the bottom of U-shaped dynamic two post unshakable in one's determination, and the direction of two of which permanent magnet pole is
Contrary, two posts of the semi-hard magnetic alloy or the U-shaped iron core that makes nothing remanent magnetism iron core are respectively by three bread of permanent magnet
Wrap up in.
Further, the U-shaped iron core of the U-shaped iron core combination that makes for permanent magnet and semi-hard magnetic alloy when dynamic iron core
When, the U-shaped iron core that the fixed core is made for semi-hard magnetic alloy；When dynamic unshakable in one's determination make for permanent magnet and nothing remanent magnetism iron core U-shaped
During the U-shaped iron core of iron core combination, the fixed core is the U-shaped iron core that makes nothing remanent magnetism iron core.
Further, the dynamic iron core is permanent magnet and semi-hard magnetic alloy or the E core that makes nothing remanent magnetism iron core combination
E core；The permanent magnet is embedded in the lower curtate of dynamic three posts unshakable in one's determination of E type, wherein the two of the dynamic side unshakable in one's determination of E type
The magnetic pole of two permanent magnets on root post towards being identical, on intermediolateral column the magnetic pole of permanent magnet towards be contrary, described half
Three bread of permanent magnet are wrapped up in by three posts of magnetically hard alloy or the E core that makes nothing remanent magnetism iron core respectively.
Further, when the E core that the E core that dynamic iron core is made for permanent magnet and semi-hard magnetic alloy is combined
When, the E core that the fixed core is made for semi-hard magnetic alloy；When the dynamic E type that makes for permanent magnet and nothing remanent magnetism iron core unshakable in one's determination
During the E core of iron core combination, the fixed core is the E core that makes nothing remanent magnetism iron core.
Further, the iron core combination that makes for permanent magnet and semi-hard magnetic alloy when dynamic iron core unshakable in one's determination when, quiet iron
The heart for semi-hard magnetic alloy make unshakable in one's determination when, described plus/degaussing control loop adds magnetic loop with unexpected power-off for low voltage intermittent
Remove magnetic loop.
Further, when the dynamic iron core combination that makes for permanent magnet and nothing remanent magnetism iron core unshakable in one's determination iron core, fixed core
For make nothing remanent magnetism iron core unshakable in one's determination when, described plus/degaussing control loop is low pressure sticking loop.
Further, described electric-control system also includes A/D acquisition module, voltage sensor and current sensor；Institute
The input for stating voltage sensor is connected to the single phase poaer supply, and the input of the current sensor is connected to a load end,
In order to gather the magnitude of voltage of the single phase poaer supply and the current value of load end；The output end of the voltage sensor and the electric current
The output end of sensor is connected with the A/D acquisition module, and the A/D acquisition module is connected to described CPU control module.
Further, the control unit of the control module of the CPU is also connected with an operation indicating circuit, is worked as in order to show
The running status of front contactor.
Further, the dynamic iron core connector is made up of plastic insulation material.
Preferably, when the iron core combination that dynamic iron core is made for permanent magnet and semi-hard magnetic alloy unshakable in one's determination when, fixed core
For semi-hard magnetic alloy make unshakable in one's determination when, CPU control module by controlling the first control loop control excitatory starting element by force, when
When excitatory starting element is turned on by force, single phase poaer supply voltage is applied directly on coil after the first commutating circuit, is produced positive
Excitatory by force, contactor fast and reliable adhesive under the excitatory by force and permanent magnet superposition excitatory by force of DC coil.Meanwhile, semi-hard magnet is closed
On the dynamic unshakable in one's determination and fixed core with remanent magnetism function that gold is made, magnetic and decompression, under-voltage disjunction storage capacitor charge.When adhesive
After journey is completed, CPU control module turns on low voltage intermittent by the 3rd control loop and adds magnetic loop, is cut by the first control loop
Break excitatory by force starting element, disconnects the coil of contactor excitatory by force, enters the remanent magnetism self-sustaining unshakable in one's determination that semi-hard magnetic alloy is made
The sticking stage, and at set intervals magnetic loop is added by the 3rd control loop conducting low voltage intermittent, refresh to remanent magnetism is unshakable in one's determination, prevent
Only remanent magnetism iron core is elapsed over time and is lost magnetism, it is ensured that the noiseless sticking of the reliable and energy-saving of contactor.When contactor is in operation
During, rely on unexpected power-off to go magnetic loop demagnetization to reach the purpose of tripping operation during under-voltage suddenly or decompression.When contactor divides
During lock, there is larger coercitive characteristic using permanent magnet, strong sharp through the conducting of the second commutating circuit using single phase poaer supply voltage
The opposite direction of magnetic starting element switches coil is excitatory by force, produces and magnetic circuit suitable with permanent magnet magnetic force magnetic force in opposite direction.This
When, in double-U-shaped or double E types Distribution of Magnetic Field unshakable in one's determination to the sound of roof construction, due to the little overwhelming majority magnetic force of magnetic resistance unshakable in one's determination
Line by forming loop in core limb, but due to coil excitation and permanent magnet excitation be excitatory by force, even if sound is unshakable in one's determination complete
In the case of closure, sound is unshakable in one's determination each all to have the considerable part magnetic line of force by the air between the striking face of left and right two unshakable in one's determination
From loop is become, larger leakage magnetic flux is formed.Between sound iron core in the core limb of contact surface, as the magnetic line of force is in opposite direction and magnetic
Power quite cancels each other, and does not assume the feature of electromagnetic force；But in the surrounding air between the striking face of sound iron core left and right, have
From loop and larger leakage magnetic flux is become, assume solenoidal field feature, very big back-electromagnetic force is produced, is presented for contactor
The feature of repulsion, relies on repulsion between this homopolar field to make contactor complete quick acting switching-off.
Especially, when the dynamic iron core combination that makes for permanent magnet and nothing remanent magnetism iron core unshakable in one's determination iron core, fixed core are
Make nothing remanent magnetism iron core unshakable in one's determination when, CPU control module is by the first control loop control excitatory starting element conducting by force, single-phase
AC supply voltage is applied directly on coil after the first commutating circuit, and generation is positive excitatory by force, makes contactor in direct current
Fast and reliable combined floodgate under the excitatory by force and permanent magnet superposition excitatory by force of coil.After attracting process is completed, control by first
Loop cuts off excitatory starting element by force, disconnects the coil of contactor excitatory by force, while low pressure is connected in the control of the 3rd control loop
Sticking loop, completes contactor DC low-voltage silent power-saving sticking.When contactor separating brake, there is larger coercive using permanent magnet
The characteristic of power, the opposite direction for turning on excitatory starting element closing coil by force through the second commutating circuit using single phase poaer supply voltage are strong
Excitatory, and magnetic circuit suitable with permanent magnet magnetic force magnetic force in opposite direction is produced, applies the repulsion to complete the intelligent quick of contactor
Separating brake.
In addition, preferably, the reaction spring that the present invention is designed according to the pull characteristics rule of contactor is nonlinear elasticity
Spring, nonlinear spring elastic force when compression is just started are less, and with the carrying out of compressed action, elastic force slowly becomes big.Work as sound
During fast closure unshakable in one's determination, between contact surface, air gap is less, and now elastic force is quickly increased, and can overcome the suction of permanent magnet.Now its
Remanent magnetism self-sustaining sticking unshakable in one's determination that sticking is made by semi-hard magnetic alloy completely or by nothing the DC low-voltage added by remanent magnetism ironcore choke
Sticking.The fast and reliable adhesive of permanent magnet intelligent contactor was so both can guarantee that, on the premise of not affecting to close a floodgate, can guarantee that again forever
Magnet intelligent contactor is definitely in gate-dividing state under coil off-position, solves existing permanent magnet contactor under normal conditions
The deficiency being difficult to ensure that definitely in gate-dividing state.
The present invention has advantages below：（1）Control technology using energy-conservation so as to which sticking state is changed to directly by sticking is exchanged
Stream sticking；（2）Coil is made to produce and the in opposite direction and suitable magnetic field of magnetic field of permanent magnet using applying reversing the current during separating brake, according to
Contactor quick acting switching-off is made by the repulsion between homopolar field, reduces the electric arc between dynamic/static contact；（3）With decompression, under-voltage shape
Under state, absolute guarantee's permanent magnet intelligent contactor is in gate-dividing state；（4）Reaction spring is can overcome permanent magnet suction non-
Hookean spring, the magnetic field by permanent magnet itself not to be completing the sticking of contactor, in the case of not affecting to close a floodgate, it is ensured that normality
Lower energy is in normal gate-dividing state.（4）When dynamic unshakable in one's determination, fixed core for semi-hard magnetic alloy make unshakable in one's determination when, semi-hard magnet can be relied on
The remanent magnetism of alloy material carries out sticking, and interval carries out the refreshing in magnetic field unshakable in one's determination, it is ensured that contactor reliability sticking, it is also possible to according to
Magnetic loop demagnetization is gone by unexpected power-off to disconnect contactor；（5）When dynamic unshakable in one's determination, fixed core is the iron core made nothing remanent magnetism iron core
When, when coil decompression or under-voltage when, contactor automatic brake separating in the presence of nonlinear spring, so as to ensure to connect under normal conditions
Tentaculum is definitely in gate-dividing state.Therefore, a kind of new permanent magnet intelligent contactor that the present invention is provided is connect when work is contacted
Tentaculum using the pulse dc high voltage of AC rectification, divide by force by excitatory adhesive, DC low-voltage or the controlled counter-force of remanent magnetism sticking, electromagnetism
The control strategy of lock, can save the loss power of the overwhelming majority in unshakable in one's determination and coil, so as to obtain higher electric energy.With
When, can also reduce or abate the noise, reduce the temperature rise of coil, and extend the life-span of contactor.
Description of the drawings
Fig. 1 is for when dynamic unshakable in one's determination, fixed core is the structural representation of U-shape structure in the present invention.
Fig. 2 is for when dynamic unshakable in one's determination, fixed core is the structural representation of E type structure in the present invention.
Fig. 3 be the present invention in when the iron core combination that dynamic iron core is made for permanent magnet and semi-hard magnetic alloy unshakable in one's determination when,
Fixed core for semi-hard magnetic alloy make unshakable in one's determination when circuit block diagram.
Fig. 4 is unshakable in one's determination, quiet when the dynamic unshakable in one's determination iron core combination that makes for permanent magnet and nothing remanent magnetism iron core in the present invention
Unshakable in one's determination for make nothing remanent magnetism iron core unshakable in one's determination when circuit block diagram.
[primary clustering symbol description]
In figure：1 is dynamic iron core；2 is permanent magnet；3 is dynamic iron core connector；4 is non-linear reaction spring；5 is fixed core；
6 is coil；7 is electric-control system；8 is touch spring；9 is static contact part；10 is moving contact part；11 is guide groove；Under 12 are
Insulation plastomer；13 is upper insulation shell.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
The present embodiment is provided the present invention and is realized using below scheme：A kind of ensured normality with the controlled counter-force of electromagnetism is divided
The permanent magnet intelligent contactor of lock, as depicted in figs. 1 and 2, including mechanical system and electric-control system, the mechanical system includes to move
Iron core, fixed core, coil, dynamic iron core connector, lower insulation shell, upper insulation shell, touch spring, moving contact part, stationary contact
Head part and two non-linear reaction springs；The dynamic iron core connector is lateral cuboid structure, the dynamic connection unshakable in one's determination
In the middle part of part, upper surface is provided with touch spring vertically upward, and the upper end of the touch spring is connected with described moving contact part,
Static contact part is provided with the moving contact part distance below, the moving contact part and static contact under "on" position
Component contact；The dynamic iron core connector middle lower surface is provided with described dynamic iron core, described dynamic during switch closing and switch opening
Connector unshakable in one's determination can be slided in the guide groove of the lower insulation shell, be correspondingly provided with quiet iron at the dynamic iron core distance below
The heart is double-U-shaped to roof construction or double E types to roof construction in order to be formed, and the fixed core is fixed on the lower insulation shell, described
Coil is wound in the fixed core；The dynamic iron core connector two ends lower surface is respectively equipped with a non-linear counter-force vertically downward
Spring, the lower end of the non-linear reaction spring are connected to the lower insulation shell；The electric-control system is connected with the coil；
Described electric-control system includes a CPU control module and a coupled divide-shut brake control module, in order to realize the intelligence
The divide-shut brake control of energy contactor, wherein described CPU control module is single-chip microcomputer, at a data storage cell, data
Reason unit and a control unit.
In the present embodiment, as shown in Figure 3 and Figure 4, described divide-shut brake control module include the first commutating circuit, second
Commutating circuit, voltage transformation loop, plus/degaussing control loop, by force excitatory starting element, in order to control by force excitatory starting element lead to
The first disconnected control loop and the second control loop and the 3rd control loop in order to control plus/degaussing control loop is opened and closed；
The input of first control loop, the second control loop and the 3rd control loop is connected with the control unit of CPU, described
The input of the first commutating circuit, second commutating circuit and the voltage transformation loop is also connected with a single phase poaer supply；
First control loop, the first commutating circuit, second control loop, the output end of the second commutating circuit are strong sharp with described
One end of magnetic starting element is connected, and the other end of the excitatory by force starting element is connected with the coil；Described 3rd controls back
The output end on road is connected with the described plus/input of degaussing control loop, described add/output end of degaussing control loop with described
Coil is connected.
In the present embodiment, the non-linear reaction spring is in order to offset the suction of the permanent magnet under normality, it is ensured that contact
Device is definitely in gate-dividing state under normal conditions；Wherein normality is that the coil is in decompression state.
In the present embodiment, the dynamic iron core is permanent magnet and semi-hard magnetic alloy or the U-shaped iron core that makes nothing remanent magnetism iron core
The U-shaped iron core for combining；The permanent magnet is embedded in the bottom of U-shaped dynamic two post unshakable in one's determination, the court of two of which permanent magnet pole
To being contrary, two posts of the semi-hard magnetic alloy or the U-shaped iron core that makes nothing remanent magnetism iron core are respectively by three of permanent magnet
Bread is wrapped up in.
In the present embodiment, the U-shaped iron of the U-shaped iron core combination that makes for permanent magnet and semi-hard magnetic alloy when dynamic iron core
During the heart, the U-shaped iron core that the fixed core is made for semi-hard magnetic alloy；As the dynamic U made for permanent magnet and nothing remanent magnetism iron core unshakable in one's determination
During the U-shaped iron core that iron-core is combined, the fixed core is the U-shaped iron core that makes nothing remanent magnetism iron core.
In the present embodiment, the dynamic iron core is permanent magnet and semi-hard magnetic alloy or the E core that makes nothing remanent magnetism iron core
The E core for combining；The permanent magnet is embedded in the lower curtate of dynamic three posts unshakable in one's determination of E type, the wherein dynamic side unshakable in one's determination of E type
Two posts on two permanent magnets magnetic pole towards being identical, on intermediolateral column, the magnetic pole of permanent magnet is towards being contrary, institute
Three bread of permanent magnet are wrapped up in by three posts respectively that state semi-hard magnetic alloy or the E core that makes nothing remanent magnetism iron core.
In the present embodiment, when the E sections that the E core that dynamic iron core is made for permanent magnet and semi-hard magnetic alloy is combined
During the heart, the E core that the fixed core is made for semi-hard magnetic alloy；As the dynamic E made for permanent magnet and nothing remanent magnetism iron core unshakable in one's determination
During the E core that iron-core is combined, the fixed core is the E core that makes nothing remanent magnetism iron core.
In the present embodiment, the iron core combination that makes for permanent magnet and semi-hard magnetic alloy when dynamic iron core unshakable in one's determination when,
Fixed core for semi-hard magnetic alloy make unshakable in one's determination when, described plus/degaussing control loop for low voltage intermittent add magnetic loop with unexpected
Magnetic loop is removed in power-off.
In the present embodiment, unshakable in one's determination, quiet when the dynamic unshakable in one's determination iron core combination that makes for permanent magnet and nothing remanent magnetism iron core
Unshakable in one's determination for make nothing remanent magnetism iron core unshakable in one's determination when, described plus/degaussing control loop is low pressure sticking loop.
In the present embodiment, described electric-control system also includes A/D acquisition module, voltage sensor and current sense
Device；The input of the voltage sensor is connected to the single phase poaer supply, and it is negative that the input of the current sensor is connected to one
End is carried, in order to gather the magnitude of voltage of the single phase poaer supply and the current value of load end；The output end of the voltage sensor and institute
The output end for stating current sensor is connected with the A/D acquisition module, and the A/D acquisition module is connected to described CPU control
Module.
In the present embodiment, the control unit of the control module of the CPU is also connected with an operation indicating circuit, in order to aobvious
Show the running status of current contactor.
In the present embodiment, the dynamic iron core connector is made up of plastic insulation material.
In the present embodiment, it is preferred that when the dynamic iron core combination that makes for permanent magnet and semi-hard magnetic alloy unshakable in one's determination
When unshakable in one's determination, fixed core for semi-hard magnetic alloy make unshakable in one's determination when, by controlling, the control of the first control loop is strong to swash CPU control module
Magnetic starting element, when excitatory starting element is turned on by force, single phase poaer supply voltage is applied directly to line after the first commutating circuit
On circle, positive excitatory by force, contactor fast and reliable adhesive under the excitatory by force and permanent magnet superposition excitatory by force of DC coil is produced.
Meanwhile, magnetic and decompression, under-voltage disjunction storage capacitor on the dynamic unshakable in one's determination and fixed core with remanent magnetism function that semi-hard magnetic alloy is made
Charge.After attracting process is completed, CPU control module turns on low voltage intermittent by the 3rd control loop and adds magnetic loop, passes through
First control loop cuts off excitatory starting element by force, disconnects the coil of contactor excitatory by force, enters what semi-hard magnetic alloy was made
The remanent magnetism self-sustaining sticking stage unshakable in one's determination, and at set intervals magnetic loop is added by the 3rd control loop conducting low voltage intermittent, give
Remanent magnetism is unshakable in one's determination to be refreshed, and prevents remanent magnetism iron core from elapsing over time and losing magnetism, it is ensured that the noiseless sticking of the reliable and energy-saving of contactor.
When contactor is in running, unexpected power-off during under-voltage suddenly or decompression, is relied on to go magnetic loop demagnetization to reach the mesh of tripping operation
's.When contactor separating brake, there is larger coercitive characteristic using permanent magnet, using single phase poaer supply voltage through the second rectification
The opposite direction that loop turns on excitatory starting element closing coil by force is excitatory by force, produces and magnetic circuit direction phase suitable with permanent magnet magnetic force
Anti- magnetic force.Now, in double-U-shaped or double E types Distribution of Magnetic Field unshakable in one's determination to the sound of roof construction, as magnetic resistance unshakable in one's determination is little absolutely
Most of magnetic line of force by forming loop in core limb, but due to coil excitation and permanent magnet excitation be excitatory by force, even if moving
In the case that fixed core is of completely closed, sound is unshakable in one's determination each all to have the considerable part magnetic line of force by the striking face of left and right two unshakable in one's determination
Between air from loop is become, form larger leakage magnetic flux.Between sound iron core in the core limb of contact surface, due to magnetic line of force side
Work as to contrary and magnetic picture and cancel each other, do not assume the feature of electromagnetic force；But the week between the striking face of sound iron core left and right
In the air is enclosed, is had from loop and larger leakage magnetic flux is become, assume solenoidal field feature, produce very big back-electromagnetic force, docking
Assume the feature of repulsion for tentaculum, rely on repulsion between this homopolar field to make contactor complete quick acting switching-off.
In the present embodiment, especially, when the dynamic iron core combination that makes for permanent magnet and nothing remanent magnetism iron core unshakable in one's determination
Unshakable in one's determination, fixed core be make nothing remanent magnetism iron core unshakable in one's determination when, CPU control module is by the control excitatory startup by force of the first control loop
Element conductive, single phase poaer supply voltage are applied directly on coil after the first commutating circuit, and generation is positive excitatory by force, makes contact
Device fast and reliable combined floodgate under the excitatory by force and permanent magnet superposition excitatory by force of DC coil.After attracting process is completed, pass through
First control loop cuts off excitatory starting element by force, disconnects the coil of contactor excitatory by force, while the control of the 3rd control loop
Low pressure sticking loop is connected, completes contactor DC low-voltage silent power-saving sticking.When contactor separating brake, have using permanent magnet
Larger coercitive characteristic, using single phase poaer supply voltage through the second commutating circuit conducting excitatory starting element closing coil by force
Opposite direction is excitatory by force, produces and magnetic circuit suitable with permanent magnet magnetic force magnetic force in opposite direction, applies the repulsion to complete contactor
Intelligent quick acting switching-off.
In the present embodiment, the reaction spring for designing according to the pull characteristics rule of contactor is nonlinear spring, should
Nonlinear spring elastic force when compression is just started is less, and with the carrying out of compressed action, elastic force slowly becomes big.When sound is unshakable in one's determination fast
During closure, between contact surface, air gap is less, and now elastic force is quickly increased, and can overcome the suction of permanent magnet.Now its sticking is complete
The full remanent magnetism self-sustaining sticking unshakable in one's determination that makes by semi-hard magnetic alloy or by nothing the DC low-voltage sticking added by remanent magnetism ironcore choke.This
Sample both can guarantee that the fast and reliable adhesive of permanent magnet intelligent contactor, on the premise of not affecting to close a floodgate, can guarantee that permanent magnet intelligence again
Energy contactor is definitely in gate-dividing state under coil off-position, solves existing permanent magnet contactor and is difficult under normal conditions protect
Deficiency of the card definitely in gate-dividing state.
The present embodiment automatically selects suitable switching-on phase, the direct current reliable adhesive of excitatory energy, energy by force by CPU control module
Self-sustaining or interval plus magnetic, and can produce and cause the similar homopolar magnet phase of contactor dependence with the reciprocal magnetic field of permanent magnet
Scold between the electromagnetic field of principle repulsion and spring force to complete quick acting switching-off.When the factor that can not resist because of the external world causes power-off,
Unexpected power-off is relied on to go magnetic loop demagnetization to disconnect contactor.The feature of the wherein non-linear reaction spring of contactor is just to start
When elastic force less, with the carrying out of compressed action, elastic force slowly becomes big, when sound unshakable in one's determination fast close when elastic force quickly become big, and
And the suction of permanent magnet can be overcome.Solve the power saving of contactor, some permanent magnet contactors not dividing under normal conditions
The problem of lock, and conventional contact separating brake relies only on the problem of counter spring force, improves the performance indications of its product.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes that is done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (9)
1. a kind of permanent magnet intelligent contactor of the ensured normality separating brake with the controlled counter-force of electromagnetism, it is characterised in that：Including
Mechanical system and electric-control system, the mechanical system include to move iron core, fixed core, coil, dynamic iron core connector, lower insulation shell
Body, upper insulation shell, touch spring, moving contact part, static contact part and two non-linear reaction springs；The dynamic iron core
Connector is lateral cuboid structure, and in the middle part of the dynamic iron core connector, upper surface is provided with touch spring vertically upward, described
The upper end of touch spring is connected with described moving contact part, is provided with stationary contact head at the moving contact part distance below
Part, the moving contact part and static contact component contact under "on" position；The dynamic iron core connector middle lower surface is provided with
Described dynamic iron core, during switch closing and switch opening, the dynamic iron core connector can be sliding in the guide groove of the lower insulation shell
Dynamic, it is double-U-shaped to roof construction or double E types to top knot in order to be formed that fixed core is correspondingly provided with the dynamic iron core distance below
Structure, the fixed core are fixed on the lower insulation shell, and the coil is wound in the fixed core；The dynamic iron core connector
Two ends lower surface is respectively equipped with a non-linear reaction spring vertically downward, and the lower end of the non-linear reaction spring is connected to institute
State lower insulation shell；The electric-control system is connected with the coil；Described electric-control system include a CPU control module and with
Its connected divide-shut brake control module, the divide-shut brake in order to realize the intelligent contactor control, and wherein described CPU controls mould
Block is single-chip microcomputer, including a data storage cell, a data processing unit and a control unit；
Described divide-shut brake control module includes the first commutating circuit, the second commutating circuit, voltage transformation loop, add/removes magnetic control
Loop processed, by force excitatory starting element, in order to control the first control loop of excitatory starting element break-make and the second control loop by force
And the 3rd control loop in order to control plus/degaussing control loop is opened and closed；First control loop, the second control loop with
And the 3rd the input of control loop be connected with the control unit of CPU control module, first commutating circuit, described second whole
The input for flowing back to road and the voltage transformation loop is also connected with a single phase poaer supply；First control loop, first whole
Flow back to road, second control loop, the output end of the second commutating circuit to be connected with one end of the excitatory by force starting element, institute
State the other end of excitatory starting element by force to be connected with the coil；The output end of the 3rd control loop and described plus/degaussing
The input of control loop is connected, and described plus/degaussing control loop output end is connected with the coil.
2. the permanent magnet Intelligent contact of a kind of ensured normality separating brake with the controlled counter-force of electromagnetism according to claim 1
Device, it is characterised in that：The U-shaped iron core that the dynamic iron core is made for permanent magnet and semi-hard magnetic alloy, or described dynamic unshakable in one's determination for forever
Magnet and the U-shaped iron core that makes nothing remanent magnetism iron core；The permanent magnet is embedded in the bottom of U-shaped two post unshakable in one's determination, two of which permanent magnetism
The direction of body magnetic pole is contrary, and two posts of the semi-hard magnetic alloy or the U-shaped iron core that makes nothing remanent magnetism iron core respectively will forever
Three bread of magnet are wrapped up in.
3. the permanent magnet Intelligent contact of a kind of ensured normality separating brake with the controlled counter-force of electromagnetism according to claim 1
Device, it is characterised in that：When the U-shaped iron core that dynamic iron core is made for permanent magnet and semi-hard magnetic alloy, the fixed core is semi-hard magnet
The U-shaped iron core that alloy is made；When the U-shaped iron core that dynamic iron core is made for permanent magnet and nothing remanent magnetism iron core, the fixed core is for no
The U-shaped iron core that remanent magnetism iron core is made.
4. the permanent magnet Intelligent contact of a kind of ensured normality separating brake with the controlled counter-force of electromagnetism according to claim 1
Device, it is characterised in that：The E core that the dynamic iron core is made for permanent magnet and semi-hard magnetic alloy, or described dynamic unshakable in one's determination for forever
Magnet and the E core that makes nothing remanent magnetism iron core；The permanent magnet is embedded in the lower curtate of dynamic three posts unshakable in one's determination of E type, wherein E type
The magnetic pole direction of two permanent magnets on two posts on dynamic side unshakable in one's determination is identical, the magnetic pole direction of permanent magnet on intermediolateral column
It is contrary, three posts of the semi-hard magnetic alloy or the E core that makes nothing remanent magnetism iron core are respectively by three faces of permanent magnet
Parcel.
5. the permanent magnet Intelligent contact of a kind of ensured normality separating brake with the controlled counter-force of electromagnetism according to claim 1
Device, it is characterised in that：When the E core that dynamic iron core is made for permanent magnet and semi-hard magnetic alloy, the fixed core is semi-hard magnet
The E core that alloy is made；When the E core that dynamic iron core is made for permanent magnet and nothing remanent magnetism iron core, the fixed core is for no
The E core that remanent magnetism iron core is made.
6. the permanent magnet Intelligent contact of a kind of ensured normality separating brake with the controlled counter-force of electromagnetism according to claim 2
Device, it is characterised in that：When dynamic unshakable in one's determination for permanent magnet and semi-hard magnetic alloy make unshakable in one's determination when, fixed core is made up of semi-hard magnetic alloy
Unshakable in one's determination when, described plus/degaussing control loop adds magnetic loop to remove magnetic loop with unexpected power-off for low voltage intermittent.
7. the permanent magnet Intelligent contact of a kind of ensured normality separating brake with the controlled counter-force of electromagnetism according to claim 2
Device, it is characterised in that：When dynamic unshakable in one's determination for permanent magnet and the iron core that makes, fixed core are to make nothing remanent magnetism iron core nothing remanent magnetism iron core
When unshakable in one's determination, described plus/degaussing control loop is low pressure sticking loop.
8. the permanent magnet Intelligent contact of a kind of ensured normality separating brake with the controlled counter-force of electromagnetism according to claim 1
Device, it is characterised in that：Described electric-control system also includes A/D acquisition module, voltage sensor and current sensor；The electricity
The input of pressure sensor is connected to single phase poaer supply, and the input of the current sensor is connected to a load end, in order to gather
The magnitude of voltage of the single phase poaer supply and the current value of load end；The output end of the voltage sensor and the current sensor
Output end is connected with the A/D acquisition module, and the A/D acquisition module is connected to described CPU control module.
9. the permanent magnet Intelligent contact of a kind of ensured normality separating brake with the controlled counter-force of electromagnetism according to claim 1
Device, it is characterised in that：The control unit of the CPU control module is also connected with an operation indicating circuit, is connect in order to show currently
The running status of tentaculum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510167770.XA CN104733230B (en) | 2015-04-10 | 2015-04-10 | A kind of permanent magnet intelligent contactor of the ensured normality separating brake with the controlled counter-force of electromagnetism |
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| CN201510167770.XA CN104733230B (en) | 2015-04-10 | 2015-04-10 | A kind of permanent magnet intelligent contactor of the ensured normality separating brake with the controlled counter-force of electromagnetism |
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| CN105448603B (en) * | 2015-11-06 | 2019-01-18 | 河南理工大学 | A kind of contactless electromagnetic switch and electromagnetic linear motor formula sectional power supply switching device |
| CN106531562A (en) * | 2016-10-31 | 2017-03-22 | 温州大学 | Energy-saving contactor |
| US10707001B2 (en) * | 2017-10-30 | 2020-07-07 | Te Connectivity Corporation | Solenoid actuator with fast analog controlled economizer |
| CN107993895B (en) * | 2018-01-05 | 2024-04-19 | 德力西电气有限公司 | Contactor without secondary bouncing |
| CN108899253A (en) * | 2018-08-27 | 2018-11-27 | 福州大学 | Three-phase independent control contactor and its control method with the controllable counter-force of electromagnetism |
| CN109787330A (en) * | 2019-03-30 | 2019-05-21 | 珠海市一微半导体有限公司 | A kind of desktop machine people recharging device and recharging method |
| CN110635512B (en) * | 2019-11-08 | 2024-01-30 | 广东德恒龙焱能源科技有限公司 | Building self-generating photovoltaic power station residual electricity internet construction system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN87208809U (en) * | 1987-06-04 | 1988-08-10 | 郝绍伟 | Energy-saving ac contactor |
| BRPI0600680C1 (en) * | 2006-02-24 | 2008-04-22 | Oscar Rolando Avila Cusicanqui | improvement introduced in electric switch |
| CN201359973Y (en) * | 2008-12-05 | 2009-12-09 | 刘国兴 | Energy-saving contactor |
| CN101789333A (en) * | 2010-02-10 | 2010-07-28 | 湖北盛佳电器设备有限公司 | Alternating current contactor with electronic short circuit self-locking function |
| CN201673862U (en) * | 2010-05-14 | 2010-12-15 | 东南大学 | Intelligent permanent magnetic alternating current contactor controlled by weak magnet |
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