CN101951249A - Composite contactor - Google Patents
Composite contactor Download PDFInfo
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- CN101951249A CN101951249A CN201010502992XA CN201010502992A CN101951249A CN 101951249 A CN101951249 A CN 101951249A CN 201010502992X A CN201010502992X A CN 201010502992XA CN 201010502992 A CN201010502992 A CN 201010502992A CN 101951249 A CN101951249 A CN 101951249A
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Abstract
The invention relates to a composite contactor which belongs to the field of electric switches, in particular to a contactor suitable for powering on and off a power capacitor. In the invention, an input power supply is subjected to current limit by a capacitor voltage drop circuit and rectification by a rectifying circuit and used for supplying power to a control coil of the contactor; the capacitor voltage drop circuit is connected with a starting electronic switch in parallel, the control end of the starting electronic switch is connected to a control circuit, and the control circuit is connected with a working power supply; a voltage zero passage detection circuit and a controllable silicon circuit are connected to two ends of a mechanical contact of the contactor in parallel; and the output end of the voltage zero passage detection circuit and one on control end of the controllable silicon circuit are connected to the control circuit, while the other on control end of the controllable silicon circuit is connected to a contact bridge of the contactor. The control coil of the composite contactor adopts a capacitor voltage drop direct current working manner, and the controllable silicon circuit adopts a design with multiple control ends, so that the composite contactor has the advantages of environmental protection, energy saving, strong anti-jamming, power on work, power on with voltage zero passage, power off with current zero passage, short controllable silicon on time, high reliability and long operation service life.
Description
Technical field
Composite contactor of the present invention belongs to the electric switch field, particularly a kind of contactor that is suitable for electric capacitor is connected disjunction.
Background technology
Most of load belongs to inductive load in electric power system at present, as light fixture of motor and all kinds of charged sense ballast devices etc., for reaching energy-conservation minimizing circuit reactive loss, improve the power transformer power utilization, generally utilize the electric capacitor parallel connection in the line as power factor compensation, but because electric capacity is big at the moment impact electric current of connecting, the easy scaling loss adhesion of contacts of contactor, big impulse current has bigger influence to electric capacity useful life, pollutes also big to the interference that electric power system causes simultaneously.Existing market has the special-purpose capacitor switching switch that switches at electric capacity, a kind of is common capacitor switching contactor (as CJ19 series capacitor switching contactor), its main contacts can be connected prior to main contacts and string has the auxiliary contact of current-limiting resistance for one group in parallel in advance, but its exist to connect the surge current restraint limited, require when the load secondary is dropped into electric capacity fully discharge, can not the current over-zero disjunction, during disjunction electric capacity big, the operation electric life of electric arc length, contactor control coil are the Alternating Current Power Supply existence than maelstrom loss, temperature rise, burn coil, shortcoming that energy consumption is high easily; The another kind of capacitor switching switch that is combination switch, operation principle is to utilize controllable silicon in parallel with the magnetic latching relay mechanical contact, before the mechanical contact of switch is connected by control circuit during in mechanical contact both end voltage zero passage the controllable silicon to parallel connection the conducting of triggering signal controllable silicon is provided, avoided connecting the surge impact electric current of electric capacity, then control circuit control magnetic latching relay mechanical contact closure; During the switch disjunction, trigger controllable silicon once more by control circuit, control circuit control magnetic latching relay mechanical contact disjunction then, after mechanical contact separates, control circuit turn-offs silicon controlled trigger signal after time-delay a period of time, finish no electric arc breaking course, because when there is disjunction certain and uncertain value the court of a feudal ruler in the disjunction of Mechanical Contact device, for guaranteeing to reach the Arc-free purpose of reliable disjunction, need after mechanical contact separates, controllable silicon will keep one section long ON time, it is long that controllable silicon needs the operating time of conducting when having disjunction, the controllable silicon power utilization is low, it is higher to generate heat, the shortcoming of reliability decrease, accumulator also must be arranged during disjunction or add an accessory power supply in addition and give the control circuit continued power, to guarantee that having enough triggering energy to keep triggers controllable silicon conducting and the disjunction of magnetic latching relay mechanical contact, this has also brought control circuit circuit complexity, not energy-conserving and environment-protective, awkward problem.
Summary of the invention
Realization the objective of the invention is to reach by the following technical programs: alternating current input power supplying is given the power supply of contactor control coil through electric capacity pressure drop circuit current limliting and rectification circuit rectification, electric capacity pressure drop circuit is parallel with the startup electronic switch, start electronic switch controling end and be connected to control circuit, control circuit is connected with working power, voltage zero-crossing detection circuit and ghyristor circuit are connected in parallel on contactor mechanical contact two ends, voltage zero-crossing detection circuit output and ghyristor circuit conducting control end are connected to control circuit, and another conducting control end of ghyristor circuit is connected to contactor and touches bridge.
Composite contactor is characterized in that starting electronic switch and is connected in parallel on electric capacity pressure drop circuit two ends by the rectification circuit ac input end, and rectification circuit output end tandem tap pipe is as switching device, and switching tube conducting control end is connected to control circuit.
Composite contactor is characterized in that the input of control circuit power supply is connected to the contactor ac input end by electric capacity.
Composite contactor is characterized in that the input of control circuit power supply is connected to the contactor ac input end by transformer.
Composite contactor, it is characterized in that ghyristor circuit silicon controlled Continuity signal in the contactor connection course of work drives ghyristor circuit by control circuit and triggers transformer, trigger the transformer output and trigger the controllable silicon conducting, in the contactor disjunction course of work, silicon controlled conducting control signal is touched bridge from contactor.
Composite contactor, it is characterized in that ghyristor circuit silicon controlled Continuity signal in the contactor connection course of work drives the ghyristor circuit photoelectrical coupler by control circuit, photoelectric coupler output end triggers the controllable silicon conducting, in the contactor disjunction course of work, silicon controlled conducting control signal is touched bridge from contactor.
In the contactor course of work, alternating current input power supplying is given the power supply of contactor control coil through electric capacity pressure drop circuit current limliting and rectification circuit rectification, control circuit powers on the back by voltage zero-crossing detection circuit acquisition voltage zero-crossing signal, provide pulse electrical signal control ghyristor circuit and control and start electronic switch starting contactor control coil, ghyristor circuit conducting when voltage zero-cross, mechanical contact closure then, pulse is imported power supply later and is given the contactor control coil energy-conservation maintenance power supply through electric capacity pressure drop circuit current limliting and rectification circuit rectification, when the circuit dead electricity, the contactor mechanical contact separates, when in the mechanical contact time of releasing, as the mechanical contact two ends not in no-voltage, touch bridge by contactor and obtain touching bridge with respect to the potential difference between two fixed contacts, potential difference drives the ghyristor circuit conducting thus, reaches the purpose of current over-zero disjunction.
The present invention is reasonable in design, the composite contactor control coil adopts DC pulse to start and electric capacity pressure drop direct current keeps working method, exchanging directly startup keeps working method to compare with common contactor control coil with exchanging, has no eddy current loss, energy-conserving and environment-protective, noiseless advantage, simultaneously the faster and coil of the closing speed of mechanical contact mechanical contact make delay time that powers on is short and stable, the contact bounce time is little, can make the ghyristor circuit required ON time in the course of work that composite contactor is connected that is connected in parallel on the mechanical contact two ends shorter like this, potential difference with respect to fixed contact when the bridge disjunction is touched in utilization when the contactor disjunction drives the controllable silicon conducting, make like this mechanical contact both end voltage during at zero point controllable silicon need not conducting, controllable silicon conducting when not at zero point, as long as controllable silicon one conducting, touch bridge disappears with respect to the potential difference of fixed contact at once, the controllable silicon current over-zero ends voluntarily, the controllable silicon ON time only needs half ripple, since this composite contactor power on finish making operation after, contactor mechanical contact and controllable silicon need not the intervention of control circuit at the contactor breaking operation, can under power failure state, finish, the single-chip microcomputer of control circuit can be in sleep or off-mode after composite contactor is finished making operation, this just is not easy single chip microcomputer halt and out-of-control condition to occur in abominable industrial electro magnetic environment, and this composite contactor has environmental protection and energy saving in sum, anti-interference strong, work on power, voltage zero-cross is connected, the current over-zero disjunction, controllable silicon ON time in the connection and the disjunction course of work is short, high reliability, the advantage that operation lifetime is long.
Description of drawings
Accompanying drawing 1 is one of embodiments of the invention circuit diagrams.
Accompanying drawing 2 is two circuit diagrams of embodiments of the invention.
Embodiment
As shown in Figure 1, AC power is through J1, the input of J2 port, again through electric capacity pressure drop circuit (A) current limliting, contactor control coil KM1 is given in rectification circuit BR1 rectification power supply, electric capacity pressure drop circuit (A) is parallel with and starts electronic switch (B), start electronic switch (B) control end and be connected to control circuit (C), the working power end of control circuit (C) is connected to power supply input J1, the J2 port, voltage zero-crossing detection circuit (E) and ghyristor circuit (D) are connected in parallel on contactor mechanical contact input and output J3, J4 end points two ends, voltage zero-crossing detection circuit (E) output and ghyristor circuit (D) conducting control end are connected to control circuit (C), and another road conducting control end of ghyristor circuit (D) is connected to contactor and touches bridge SW1.
Electric capacity pressure drop circuit (A): be composed in series by capacitor C 1 and resistance R 1;
Start electronic switch (B): rectification circuit BR2 ac input end is connected in parallel to electric capacity pressure drop circuit (A) two ends, output is in series with switching tube Q1, output positive and negative charge is connected with drain electrode, the source electrode of switching tube Q1 respectively, R2 is the switching tube pull down resistor, the assurance field effect transistor can reliably be ended when no bias voltage, and the control utmost point of switching tube Q1 and source electrode are as the control end that starts electronic switch;
Control circuit (C): control circuit (C) power input is that transformer T1 input is connected to J1, the J2 end, the T1 output AC voltage is through rectification circuit BR3 rectification, capacitor C 2, one tunnel triggering transformer T2 power supply of giving ghyristor circuit (D) after the C3 filtering, integrated regulator IC1 voltage stabilizing and capacitor C 4 are given in another road, C5 is filtered into the power supply of single-chip microprocessor MCU circuit working, the I/O mouth P0.0 driving transformer T4 of MCU, voltage-stabiliser tube Z1 is for absorbing the protection diode of T4 induced voltage, the T4 output is connected to by diode D7 and starts electronic switch (B) control end, C6 is a filter capacitor, I/O mouth P0.7 output is by R7 driving transistors Q3, the Q3 output is connected to ghyristor circuit (D) control end (promptly triggering the input of transformer T2), R10, D5 is used to absorb the purposes of ghyristor circuit (D) internal trigger transformer T2 induced voltage, I/O mouth P0.6 is the voltage zero-cross input port, transistor Q2 and D6 are shaping circuit, and transistor Q2 base stage is connected to voltage zero-crossing detection circuit (E) output;
Ghyristor circuit (D): the controllable silicon SCR 1 of ghyristor circuit and SCR2 are connected in reverse parallel in contactor mechanical contact input and output J3, J4 end points two ends, the controllable silicon Continuity signal provides pulse control signal by control circuit (C) by giving triggering transformer T2 input in the contactor connection course of work, and transformer T2 output triggers the controllable silicon conducting; The triggering signal of controllable silicon conducting when when the contactor breaking operation, touching bridge SW1 and provide the contactor disjunction by current-limiting resistance R4 by contactor, diode D1, D2, D3, D4 are anti-reverse voltage diodes;
Voltage zero-crossing detection circuit (E): current-limiting resistance R5 is with the series connection of voltage transformer T3 input, and series loop is connected in parallel to contactor mechanical contact input and output J3, J4 end points two ends, voltage transformer T3 output output detection signal;
In the composite contactor course of work: power supply is from J1, the input of J2 port, give control circuit (C) power supply, MCU constantly detects the signal of voltage zero-crossing detection circuit (E) input by I/O mouth P0.6, when satisfying voltage zero-cross, the P0.0 of MCU, the pulse train control signal of an about 100ms of P0.7 output, ghyristor circuit during output pulse string (D) controllable silicon SCR 1, the conducting of SCR2 voltage zero-cross, start electronic switch (B) conducting, contactor touches bridge SW1 closure then, ghyristor circuit (D) and startup electronic switch (B) are closed after the driving pulse, utilizing software that single-chip microprocessor MCU is in then shuts down or sleep state, power supply is given contactor control coil KM1 energy-conservation maintenance power supply by electric capacity pressure drop circuit (A) current limliting, when the contactor dead electricity, contactor touches bridge SW1 and discharges, as J3, the J4 both end voltage is not when zero point, touch the moment of bridge SW1 disjunction, touching bridge SW1 will be to two-end-point J3, J4 forms potential difference, signal triggering controllable silicon conducting thus, when end points J3 is positive potential to end points J4, trigger current is by current-limiting resistance R4, diode D2 is to the controllable silicon SCR 1 control utmost point, trigger controllable silicon SCR 1 conducting, controllable silicon SCR 1 is turn-offed when current over-zero voluntarily; When end points J3 is negative potential to end points J4, trigger current is controlled the utmost points by current-limiting resistance R4, diode D1 to controllable silicon SCR 2, trigger controllable silicon SCR 2 conductings, controllable silicon SCR 2 is turn-offed when current over-zero voluntarily, only need a controllable silicon job in each contactor current over-zero breaking course, and maximum ON time only is half ripple.
As shown in Figure 2, this embodiment control circuit adopts transless power supply design, and the work energy consumption is lower.AC power is through J1, the input of J2 port is through electric capacity pressure drop circuit (A) current limliting, contactor control coil KM1 is given in rectification circuit BR1 rectification power supply, electric capacity pressure drop circuit (A) is parallel with and starts electronic switch (B), start electronic switch (B) control end and be connected to control circuit (C), the working power input of control circuit (C) is connected to J1, the J2 port, voltage zero-crossing detection circuit (E) and ghyristor circuit (D) are connected in parallel on contactor mechanical contact input and output J3, J4 end points two ends, voltage zero-crossing detection circuit (E) output and ghyristor circuit (D) conducting control end are connected to control circuit (C), and another road conducting control end of ghyristor circuit (D) is connected to contactor and touches bridge SW1.
Electric capacity pressure drop circuit (A): be composed in series by capacitor C 1 and R1;
Start electronic switch (B): rectification circuit BR1 input is connected in parallel to electric capacity pressure drop circuit (A) two ends, output is in series with switching tube Q1, the output positive and negative terminal is connected with drain electrode, the source electrode of switching tube Q1 respectively, rectification circuit BR1 output dc voltage provides suitable turn-on bias voltage for switching tube Q1 through biasing resistor R2 and voltage stabilizing didoe Z1 series connection dividing potential drop, capacitor C 8 is energy storage filtering purposes, R3 is a pull down resistor, and the biased electrical pressure side of switching tube Q1 and the control utmost point are connected to control circuit (C);
Control circuit (C): the power supply input of control circuit is by J1, J2 holds input, give rectification circuit BR3 rectification through capacitor C 2 pressure drops and resistance R 9 current limlitings, again through capacitor C 3, one the tunnel gives the R10 current limliting after the C4 filtering, integrated regulator IC1 voltage stabilizing (R15, R16 is that divider resistance is used to adjust the voltage stabilizing value), capacitor C 5, C6 is filtered into the power supply of single-chip microprocessor MCU circuit working, another road gives the P0.5 mouth of single-chip microprocessor MCU as the supply voltage detection applications through R11 and R12 dividing potential drop, the I/O mouth P0.0 of single-chip microprocessor MCU drives photoelectrical coupler OPT1 by resistance R 6 current limlitings, the output of OPT1 is connected to and starts electronic switch (B) control end, the I/O mouth P0.7 output of MCU is connected to the control end of ghyristor circuit (D) by the R17 current limliting, I/O mouth P0.6 is the voltage zero-cross input port, R7, R8 is a pull-up resistor.
Ghyristor circuit (D): two unidirectional controllable silicon S CR1 and SCR2 reverse parallel connection, in parallel with contactor mechanical contact input and output J3, J4 end points again, SCR1 is connected with the negative electrode of D2, D1 respectively with the SCR2 control utmost point, the anode of D2, D1 connects together, the anode common ends of D2, D1 is connected to by current-limiting resistance R4 and touches bridge SW1, the SCR2 control utmost point and the SCR1 control utmost point link together by current-limiting resistance R5 and photoelectrical coupler OPT2 output, and the OPT2 input is for offering the control port of control circuit (C) control; (annotate: when contactor mechanical contact both end voltage is higher, can use many photoelectrical coupler series connection to use, operation principle is constant)
Voltage zero-crossing detection circuit (E): current-limiting resistance R14 is with the series connection of photoelectrical coupler OPT3 input, and series loop is connected in parallel to contactor mechanical contact input and output J3, J4 end points two ends, photoelectrical coupler OPT3 output output detection signal;
In the composite contactor course of work: AC power is from J1, the input of J2 port, give control circuit (C) power supply, MCU work back is detected the signal of voltage zero-crossing detection circuit (E) input by the detection supply voltage of I/O mouth P0.5 with by I/O mouth P0.6, when satisfying the voltage zero-cross condition, MCU according to the contactor control coil at the different magnitudes of voltage delay time that the contactor mechanical contact connects that powers on, come calculating control circuit to output to and start electronic switch (B) control signal and the time difference that outputs to ghyristor circuit (D) control signal (notes: silicon controlled ON time when this can reduce the contactor connection), the controllable silicon conducting, contactor mechanical contact closure then, close for startup electronic switch (B) conducting control signal, starting electronic switch (B) disconnects, power supply is given contactor control coil KM1 energy-conservation maintenance power supply by electric capacity pressure drop circuit (A) current limliting, control circuit (C) outputs to ghyristor circuit (D) drive signal and cuts out, utilizing software that single-chip microprocessor MCU is in then shuts down or sleep state, when the contactor dead electricity, touching bridge SW1 by contactor discharges, as J3, the J4 both end voltage is not when zero point, touch the moment of bridge SW1 disjunction, touching bridge SW1 will be to two-end-point J3, J4 forms potential difference, signal triggering controllable silicon conducting thus, when end points J3 is positive potential to end points J4, trigger current is by current-limiting resistance R4, diode D2 is to the controllable silicon SCR 1 control utmost point, trigger controllable silicon SCR 1 conducting, controllable silicon SCR 1 is turn-offed when current over-zero voluntarily; When end points J3 is negative potential to end points J4, trigger current is controlled the utmost points by current-limiting resistance R4, diode D1 to controllable silicon SCR 2, trigger controllable silicon SCR 2 conductings, controllable silicon SCR 2 is turn-offed when current over-zero voluntarily, only need a controllable silicon job in each contactor current over-zero breaking course, and maximum ON time only is half ripple.
The model that single-chip microprocessor MCU is used among the above embodiment is C8051F300, the functional configuration of the I/O mouth of input and output is only for reference, flexible configuration as required, also can realize finishing technical solution of the present invention with other models MCU or circuit, in two-phase, when the three-phase composite contactor is used, the way that only need increase the I/O mouth of MCU and ghyristor circuit, zero cross detection circuit, mechanical contact gets final product, and operation principle is identical, just seldom gives unnecessary details at this.
Claims (6)
1. composite contactor, it is characterized in that alternating current input power supplying gives the power supply of contactor control coil through electric capacity pressure drop circuit current limliting and rectification circuit rectification, electric capacity pressure drop circuit is parallel with the startup electronic switch, start electronic switch controling end and be connected to control circuit, control circuit is connected with working power, voltage zero-crossing detection circuit and ghyristor circuit are connected in parallel on contactor mechanical contact two ends, voltage zero-crossing detection circuit output and ghyristor circuit conducting control end are connected to control circuit, and another conducting control end of ghyristor circuit is connected to contactor and touches bridge.
2. composite contactor according to claim 1, it is characterized in that starting electronic switch and be connected in parallel on electric capacity pressure drop circuit two ends by the rectification circuit ac input end, rectification circuit output end tandem tap pipe is as switching device, and switching tube conducting control end is connected to control circuit.
3. composite contactor according to claim 1 is characterized in that the input of control circuit power supply is connected to the contactor ac input end by transformer.
4. composite contactor according to claim 1 is characterized in that the input of control circuit power supply is connected to the contactor ac input end by electric capacity.
5. composite contactor according to claim 1, it is characterized in that ghyristor circuit silicon controlled Continuity signal in the contactor connection course of work drives ghyristor circuit by control circuit and triggers transformer, trigger the transformer output and trigger the controllable silicon conducting, in the contactor disjunction course of work, silicon controlled conducting control signal is touched bridge from contactor.
6. composite contactor according to claim 1, it is characterized in that ghyristor circuit silicon controlled Continuity signal in the contactor connection course of work drives the ghyristor circuit photoelectrical coupler by control circuit, photoelectric coupler output end triggers the controllable silicon conducting, in the contactor disjunction course of work, silicon controlled conducting control signal is touched bridge from contactor.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010502992XA CN101951249A (en) | 2010-09-29 | 2010-09-29 | Composite contactor |
| CN2011203905680U CN202261202U (en) | 2010-09-29 | 2011-09-29 | Composite contactor |
| CN2011103088576A CN102394611A (en) | 2010-09-29 | 2011-09-29 | Composite contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010502992XA CN101951249A (en) | 2010-09-29 | 2010-09-29 | Composite contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101951249A true CN101951249A (en) | 2011-01-19 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010502992XA Pending CN101951249A (en) | 2010-09-29 | 2010-09-29 | Composite contactor |
| CN2011203905680U Expired - Fee Related CN202261202U (en) | 2010-09-29 | 2011-09-29 | Composite contactor |
| CN2011103088576A Pending CN102394611A (en) | 2010-09-29 | 2011-09-29 | Composite contactor |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203905680U Expired - Fee Related CN202261202U (en) | 2010-09-29 | 2011-09-29 | Composite contactor |
| CN2011103088576A Pending CN102394611A (en) | 2010-09-29 | 2011-09-29 | Composite contactor |
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| CN (3) | CN101951249A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102522970A (en) * | 2011-05-18 | 2012-06-27 | 广州市金矢电子有限公司 | Triggering energy-saving device and thyristor switch |
| CN103745883A (en) * | 2014-01-08 | 2014-04-23 | 辽宁工程技术大学 | Combined type arc-free alternating-current (AC) contactor with function of thyristor fault diagnosis |
| CN104811169A (en) * | 2015-05-14 | 2015-07-29 | 科都电气有限公司 | Non-arc power-off protection switch control circuit |
| CN105762017A (en) * | 2016-04-29 | 2016-07-13 | 苏州新亚科技有限公司 | Relay module control system and working method |
| CN104423277B (en) * | 2013-08-23 | 2017-05-10 | 赛恩倍吉科技顾问（深圳）有限公司 | Power supply control system and method |
| CN106680704A (en) * | 2017-01-12 | 2017-05-17 | 中国计量大学 | Composite switch and methods of passing-zero switching control and self-switching fault judgment thereof |
| CN106898523A (en) * | 2017-03-03 | 2017-06-27 | 江苏省太仓中等专业学校 | A kind of intelligent relay module control system with self-shield |
| CN107979105A (en) * | 2016-10-24 | 2018-05-01 | 浙江水利水电学院 | Intelligent phase electricity output switch and its control method |
| CN107979103A (en) * | 2016-10-24 | 2018-05-01 | 浙江水利水电学院 | The electric switch of three-phase four-wire power loading interfaces phase and its control method |
| CN108447735A (en) * | 2018-05-10 | 2018-08-24 | 浙江英洛华新能源科技有限公司 | Anti- capacitive load impact two-way high voltage control component and its closure control method |
| CN109938595A (en) * | 2017-12-21 | 2019-06-28 | 佛山市顺德区美的电热电器制造有限公司 | A kind of control method, device and cooking equipment |
| CN111542469A (en) * | 2017-08-01 | 2020-08-14 | 康明斯有限公司 | Control logic for connecting multiple high-side loads to a common return pin in an engine control module application |
| CN111555663A (en) * | 2020-05-25 | 2020-08-18 | 天津索龙电子科技有限公司 | Motor starting and stopping system and method based on micro-motor action |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201345548Y (en) * | 2008-11-20 | 2009-11-11 | 河海大学常州校区 | Dynamic reactive power compensation intelligent composite switch |
-
2010
- 2010-09-29 CN CN201010502992XA patent/CN101951249A/en active Pending
-
2011
- 2011-09-29 CN CN2011203905680U patent/CN202261202U/en not_active Expired - Fee Related
- 2011-09-29 CN CN2011103088576A patent/CN102394611A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102522970A (en) * | 2011-05-18 | 2012-06-27 | 广州市金矢电子有限公司 | Triggering energy-saving device and thyristor switch |
| CN104423277B (en) * | 2013-08-23 | 2017-05-10 | 赛恩倍吉科技顾问（深圳）有限公司 | Power supply control system and method |
| CN103745883A (en) * | 2014-01-08 | 2014-04-23 | 辽宁工程技术大学 | Combined type arc-free alternating-current (AC) contactor with function of thyristor fault diagnosis |
| CN103745883B (en) * | 2014-01-08 | 2015-10-14 | 辽宁工程技术大学 | A kind of combined type Arcless AC Contactor with transistors breakdown diagnostic function |
| CN104811169B (en) * | 2015-05-14 | 2017-12-26 | 科都电气有限公司 | One kind is without electric arc cut-offing protecting switch control circuit |
| CN104811169A (en) * | 2015-05-14 | 2015-07-29 | 科都电气有限公司 | Non-arc power-off protection switch control circuit |
| CN105762017A (en) * | 2016-04-29 | 2016-07-13 | 苏州新亚科技有限公司 | Relay module control system and working method |
| CN107979103A (en) * | 2016-10-24 | 2018-05-01 | 浙江水利水电学院 | The electric switch of three-phase four-wire power loading interfaces phase and its control method |
| CN107979105A (en) * | 2016-10-24 | 2018-05-01 | 浙江水利水电学院 | Intelligent phase electricity output switch and its control method |
| CN107979103B (en) * | 2016-10-24 | 2021-05-04 | 浙江水利水电学院 | Three-phase four-wire power supply load interface phase electric exchange device and control method thereof |
| CN107979105B (en) * | 2016-10-24 | 2021-05-04 | 浙江水利水电学院 | Intelligent phase electricity output exchange device and control method thereof |
| CN106680704A (en) * | 2017-01-12 | 2017-05-17 | 中国计量大学 | Composite switch and methods of passing-zero switching control and self-switching fault judgment thereof |
| CN106680704B (en) * | 2017-01-12 | 2019-06-25 | 中国计量大学 | Combination switch and its operating passing zero control and itself switching fault judgment method |
| CN106898523A (en) * | 2017-03-03 | 2017-06-27 | 江苏省太仓中等专业学校 | A kind of intelligent relay module control system with self-shield |
| CN111542469A (en) * | 2017-08-01 | 2020-08-14 | 康明斯有限公司 | Control logic for connecting multiple high-side loads to a common return pin in an engine control module application |
| CN109938595A (en) * | 2017-12-21 | 2019-06-28 | 佛山市顺德区美的电热电器制造有限公司 | A kind of control method, device and cooking equipment |
| CN108447735A (en) * | 2018-05-10 | 2018-08-24 | 浙江英洛华新能源科技有限公司 | Anti- capacitive load impact two-way high voltage control component and its closure control method |
| CN108447735B (en) * | 2018-05-10 | 2023-11-07 | 浙江英洛华新能源科技有限公司 | Capacitive load impact resistant double-path high-voltage control assembly and closing control method thereof |
| CN111555663A (en) * | 2020-05-25 | 2020-08-18 | 天津索龙电子科技有限公司 | Motor starting and stopping system and method based on micro-motor action |
| CN111555663B (en) * | 2020-05-25 | 2023-06-06 | 天津索龙电子科技有限公司 | Motor start-stop system and method based on micro-motor action |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202261202U (en) | 2012-05-30 |
| CN102394611A (en) | 2012-03-28 |
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