CN103762119A - Wide voltage electromagnetic contactor control circuit with low voltage ride-through function - Google Patents
Wide voltage electromagnetic contactor control circuit with low voltage ride-through function Download PDFInfo
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- CN103762119A CN103762119A CN201310747318.1A CN201310747318A CN103762119A CN 103762119 A CN103762119 A CN 103762119A CN 201310747318 A CN201310747318 A CN 201310747318A CN 103762119 A CN103762119 A CN 103762119A
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Abstract
A wide voltage electromagnetic contactor control circuit with the low voltage ride-through function is characterized by comprising a rectifier filter circuit, a wide voltage input system power supply circuit, a voltage sampling circuit, a comprehensive control unit circuit, a controllable energy storage circuit, an external low voltage signal controllable interface circuit, a semiconductor element coil driving circuit, a wide voltage input coil power supply circuit and a double-winding electromagnetic coil. According to the wide voltage electromagnetic contactor control circuit with the low voltage ride-through function, an electromagnetic contactor can normally work within the wide voltage input range, meanwhile, the circuit is provided with an external low voltage signal controllable interface, the low voltage ride through function of the electromagnetic contactor is achieved, the service life of the electromagnetic contactor is prolonged, and the safety of the electromagnetic contactor is improved.
Description
Technical field
The invention belongs to low-voltage electrical technical field, specifically just relate to a kind of wide voltage electromagnetic contactor control circuit with low-voltage crossing function.
Background technology
Contactor is a kind of for connecting at a distance, continually and the electrical equipment of disjunction AC and DC main circuit and large volume controlled circuit, its main control object is motor, also can be used as controlling the electrical loads such as electroheat equipment, electric lighting, electric welding machine and capacitor group.Contactor has higher frequency of operation, and the highest frequency of operation can reach 1200 times per hour.The life-span of contactor is very high, is generally millions of mechanical endurance to 10,000,000 times, and electric life is generally hundreds thousand of times to millions of times.In circuit and do not require that contactor has the ability of disjunction short circuit current, when circuit is short-circuited, by the fuse or the circuit breaker that are in series with contactor, protected.
Contactor is divided into high pressure and lv contactor by electric pressure; By electric current kind, be divided into AC and DC contactor; By operating mechanism, be divided into electromagnetic type, fluid pressure type, pneumatic type contactor; By manner of execution, be divided into Direct Action Type and rotary contactor; By the quantity of main contact, be divided into one pole, the two poles of the earth, three utmost points, can have at most the contactor of five utmost points; By contactor, do not move the position of front main contact and be divided into normally open contact or normally closed interlock contactor.
In modern industry or wind-powered electricity generation application scenario, contactor product electromagnetic system supply power voltage is because generating equipment self character all can exist fluctuation conventionally on the one hand, some time voltage fluctuation ratio is larger, while there is voltage and when too low and too high phenomenon, brownout product just can not action message, and voltage may cause greater impact even to burn out product to supply line compared with higher position; Contactor product is wanted normally to work in this case, just necessarily requires its function with wide operating voltage, otherwise cannot meet the object of generating equipment stable power-supplying; Another one aspect may be due to a variety of causes in the application system of contactor, solenoid supply power voltage can land or interrupt moment, so just require contactor product when supply power voltage moment landing or interrupting, can keep the grid-connected function of low voltage crossing, even to electrical network, provide certain reactive power, until power system restoration is normal, thereby " passing through " this low-voltage time or region have the function of low voltage crossing.Chinese Patent Application No. 200910300997.1 discloses a kind of full width voltage electromagnetic contactor controller, this patent contacts with the alternating current-direct current of can realizing that PWM controls based on single-chip microcomputer, cannot meet multiple electrical equipment use occasion, not there is low-voltage crossing function simultaneously.
Summary of the invention
The object of the invention is technological deficiency narrow for existing electromagnetic treadle operating voltage range, that do not possess low voltage ride-through capability, a kind of wide voltage electromagnetic contactor control circuit with low-voltage crossing function is provided, can realize electromagnetic treadle in wide range input voltage, in normal work, there is outer low pressure signal can control interface, and realize the function of the low voltage crossing of electromagnetic contactor.
Technical scheme
In order to realize above-mentioned technical purpose, the present invention designs a kind of wide voltage electromagnetic contactor control circuit with low-voltage crossing function, it is characterized in that: it comprises current rectifying and wave filtering circuit, described rectification filter circuit output end is connected respectively to wide voltage input system power circuit input and voltage sample circuit input, described wide voltage input system power circuit output end is connected respectively to Comprehensive Control element circuit, controlled accumulator, the controlled interface circuit of outer low pressure signal and the input that comprises semiconductor element coil driver, described voltage sample circuit output is connected to the input of Comprehensive Control element circuit, described Comprehensive Control element circuit output and controlled accumulator input, comprise thyristor coil driver input, the controlled interface circuit output of outer low pressure signal is connected, the described thyristor coil driver input that comprises is connected with wide voltage input line circle power supply circuits output, comprising thyristor coil driver is connected with double winding solenoid, described wide voltage input line circle power supply circuits are connected with double winding solenoid, described wide voltage input line circle power supply circuits output is connected with the input of controlled accumulator, described double winding solenoid is connected with controlled accumulator output.
Described double winding solenoid comprises pull-in winding and protects magnetic coil.
Described controlled accumulator adopts capacitance energy storage.
The controlled interface circuit of described outer low pressure signal adopts optocoupler or relay isolation transmitting element, and its output is connected with Comprehensive Control element circuit.
Beneficial effect
The wide voltage electromagnetic contactor control circuit with low-voltage crossing function provided by the invention, can realize electromagnetic treadle in wide range input voltage, in normal work, there is outer low pressure signal can control interface, and realize the function of the low voltage crossing of electromagnetic contactor, the useful life and the fail safe that have improved electromagnetic treadle.
Accompanying drawing explanation
Accompanying drawing 1 is circuit relationships schematic layout pattern of the present invention.
Accompanying drawing 2 is wide voltage input line circle power supply circuits and controlled accumulator connection diagrams in the present invention.
Accompanying drawing 3 is voltage sample circuit connection diagrams in the present invention.
Accompanying drawing 4 is wide voltage input system power circuit connection diagrams in the present invention.
Accompanying drawing 5 is Comprehensive Control element circuit connection diagrams in the present invention.
Accompanying drawing 6 is the controlled interface circuit connection diagrams of peripheral low-voltage signal of the present invention.
Accompanying drawing 7 is pull-in winding structural representations in the present invention.
Accompanying drawing 8 is in the present invention, to protect magnet coil structure schematic diagram.
Wherein, 1, wide voltage input line circle power supply circuits, 2, controlled accumulator, 3, voltage sample circuit, 4, wide voltage input system power circuit, 5, Comprehensive Control element circuit, 6, the controlled interface circuit of outer low pressure signal, 7, pull-in winding, 8, protect magnetic coil.
Embodiment
Below in conjunction with specific embodiment, invention is described further.
Embodiment
As shown in Figure 1, a kind of wide voltage electromagnetic contactor control circuit with low-voltage crossing function, it is characterized in that: it comprises current rectifying and wave filtering circuit A, described current rectifying and wave filtering circuit A output is connected respectively to wide voltage input system power circuit B input and voltage sample circuit C input, described wide voltage input system power circuit B output is connected respectively to Comprehensive Control element circuit D, controlled accumulator E, the controlled interface circuit F of outer low pressure signal and the input that comprises semiconductor element coil driver G, described voltage sample circuit C output is connected to the input of Comprehensive Control element circuit D, described Comprehensive Control element circuit D output and controlled accumulator E input, comprise thyristor coil driver G input, the controlled interface circuit F of outer low pressure signal output is connected, the described thyristor coil driver G input that comprises is connected with wide voltage input line circle power supply circuits H output, comprising thyristor coil driver G is connected with double winding solenoid, described wide voltage input line circle power supply circuits H is connected with double winding solenoid I, the input of the controlled accumulator E of described wide voltage input line circle power supply circuits H output is connected, described double winding solenoid I is connected with controlled accumulator E output.
Further, described double winding solenoid comprises pull-in winding and protects magnetic coil.
Further, described controlled accumulator E adopts capacitance energy storage.
Further, the controlled interface circuit F of described outer low pressure signal adopts optocoupler or relay isolation transmitting element, and its output is connected with Comprehensive Control element circuit.
As shown in accompanying drawing 2～8, operation principle of the present invention is that electromagnetic system supply power voltage obtains direct voltage after current rectifying and wave filtering circuit, wide voltage input system power circuit 4 is started working, through certain time-delay, set up stable system works supply voltage Vc, wide voltage input line circle power supply circuits 1 are also started working simultaneously, have set up stable coil working voltage after certain time-delay, Comprehensive Control element circuit 5 obtains starting working and continuing collection after system works power supply, differentiate external control signal and instruction, identify current supply power voltage character and amplitude and control controlled accumulator 2 beginning energy storage simultaneously, when receiving outside relevant action instruction or supply power voltage and reach product pick-up voltage, product is inhaled moving by pull-in winding 7, through certain time-delay, product contact is inhaled after moving putting in place, Comprehensive Control unit 5 blocks pull-in winding 7 and drives signal, the driving signal of magnetic coil 8 is protected in output simultaneously, protect magnetic coil 8 to obtain constant energy and make product keep on-state, because pull-in winding 7 can be inhaled reliably movable property product under wide-range voltage, wide voltage input system power circuit 4 can be at the system power supply voltage of stable output under wide range input voltage, the voltage of stable output under the scope that wide voltage input line circle power supply circuits 1 can be inputted at wide voltage.Therefore when the electromagnetic system mains ripple of product, product still can normally be worked, and realizes real wide voltage power supply.
In product work process, if power supply interrupts suddenly or sharply falls, Comprehensive Control unit 5 can collect corresponding signal, now combining Comprehensive Control unit 5 will connect controlled accumulator 2 and by thyristor, energy be discharged to protecting magnetic coil 8, owing to obtaining energy that controlled accumulator 2 discharges, protect electric current in magnetic coil 8 and can maintain, the maintenance magnetic potential of product can maintain, product is continued to be kept connecting, therefore when electromagnetic system supply power voltage interrupts in short-term or sharply fall in short-term backward products, still can maintain predetermined a period of time of connection, realize the function of low voltage crossing.
The wide voltage electromagnetic contactor control circuit with low-voltage crossing function provided by the invention, can realize electromagnetic treadle in wide range input voltage, in normal work, there is outer low pressure signal can control interface, and realize the function of the low voltage crossing of electromagnetic contactor, the useful life and the fail safe that have improved electromagnetic treadle.
Claims (4)
1. a wide voltage electromagnetic contactor control circuit with low-voltage crossing function, it is characterized in that: it comprises current rectifying and wave filtering circuit (A), described current rectifying and wave filtering circuit (A) output is connected respectively to wide voltage input system power circuit (B) input and voltage sample circuit (C) input, (B output is connected respectively to Comprehensive Control element circuit (D) to described wide voltage input system power circuit, controlled accumulator (E), the controlled interface circuit of outer low pressure signal (F) and the input that comprises semiconductor element coil driver (G), described voltage sample circuit (C) output is connected to the input of Comprehensive Control element circuit (D), described Comprehensive Control element circuit (D) output and controlled accumulator (E) input, comprise thyristor coil driver (G) input, the controlled interface circuit of outer low pressure signal (F) output is connected, described thyristor coil driver (G) input that comprises is connected with wide voltage input line circle power supply circuits (H) output, comprising thyristor coil driver (G) is connected with double winding solenoid, described wide voltage input line circle power supply circuits H is connected with double winding solenoid (I), described wide voltage input line circle power supply circuits H output is connected with the input of controlled accumulator E, described double winding solenoid (I) is connected with controlled accumulator (E) output.
2. a kind of wide voltage electromagnetic contactor control circuit with low-voltage crossing function as claimed in claim 1, is characterized in that: described double winding solenoid (I) comprises pull-in winding and protects magnetic coil.
3. a kind of wide voltage electromagnetic contactor control circuit with low-voltage crossing function as claimed in claim 1, is characterized in that: described controlled accumulator (E) adopts capacitance energy storage.
4. a kind of wide voltage electromagnetic contactor control circuit with low-voltage crossing function as claimed in claim 1, it is characterized in that: the controlled interface circuit of described outer low pressure signal (F) adopts optocoupler or relay isolation transmitting element, and its output is connected with Comprehensive Control element circuit (D).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747318.1A CN103762119A (en) | 2013-12-30 | 2013-12-30 | Wide voltage electromagnetic contactor control circuit with low voltage ride-through function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747318.1A CN103762119A (en) | 2013-12-30 | 2013-12-30 | Wide voltage electromagnetic contactor control circuit with low voltage ride-through function |
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| CN103762119A true CN103762119A (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310747318.1A Pending CN103762119A (en) | 2013-12-30 | 2013-12-30 | Wide voltage electromagnetic contactor control circuit with low voltage ride-through function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538251A (en) * | 2014-12-31 | 2015-04-22 | 通能顺达科技国际有限公司 | Contactor driven by capacitive stored energy |
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| US20050162246A1 (en) * | 2004-01-26 | 2005-07-28 | Tzo-Ing Lin | Noise-free low-power consumption wide voltage range DC and AC contactor and remote telephone control system using the same |
| CN1925085A (en) * | 2005-09-02 | 2007-03-07 | 上海扎可电气有限公司 | Wide voltage energy-saving controller for contactor |
| CN201247738Y (en) * | 2008-07-14 | 2009-05-27 | 上海久隆电力科技有限公司 | Control coil for energy-saving AC contactor |
| CN201584367U (en) * | 2009-06-10 | 2010-09-15 | 福州大学 | AC and DC general voltage dropout preventive contactor controller |
| CN102693872A (en) * | 2012-06-25 | 2012-09-26 | 福州大学 | Alternating-current contactor controller and control method based on low-voltage capacitor |
| CN203733718U (en) * | 2013-12-30 | 2014-07-23 | 上海良信电器股份有限公司 | Wide voltage electromagnetic contactor control circuit with low voltage ride-through function |
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2013
- 2013-12-30 CN CN201310747318.1A patent/CN103762119A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050162246A1 (en) * | 2004-01-26 | 2005-07-28 | Tzo-Ing Lin | Noise-free low-power consumption wide voltage range DC and AC contactor and remote telephone control system using the same |
| CN1925085A (en) * | 2005-09-02 | 2007-03-07 | 上海扎可电气有限公司 | Wide voltage energy-saving controller for contactor |
| CN201247738Y (en) * | 2008-07-14 | 2009-05-27 | 上海久隆电力科技有限公司 | Control coil for energy-saving AC contactor |
| CN201584367U (en) * | 2009-06-10 | 2010-09-15 | 福州大学 | AC and DC general voltage dropout preventive contactor controller |
| CN102693872A (en) * | 2012-06-25 | 2012-09-26 | 福州大学 | Alternating-current contactor controller and control method based on low-voltage capacitor |
| CN203733718U (en) * | 2013-12-30 | 2014-07-23 | 上海良信电器股份有限公司 | Wide voltage electromagnetic contactor control circuit with low voltage ride-through function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538251A (en) * | 2014-12-31 | 2015-04-22 | 通能顺达科技国际有限公司 | Contactor driven by capacitive stored energy |
| CN104538251B (en) * | 2014-12-31 | 2017-10-03 | 通能顺达科技国际有限公司 | A kind of contactor of capacitance energy storage driving |
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