CN204242870U - Electronic arc-suppressor - Google Patents
Electronic arc-suppressor Download PDFInfo
- Publication number
- CN204242870U CN204242870U CN201420737815.3U CN201420737815U CN204242870U CN 204242870 U CN204242870 U CN 204242870U CN 201420737815 U CN201420737815 U CN 201420737815U CN 204242870 U CN204242870 U CN 204242870U
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- power semiconductor
- voltage detecting
- contact
- circuit
- detecting circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/541—Contacts shunted by semiconductor devices
- H01H9/542—Contacts shunted by static switch means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
- H01H9/541—Contacts shunted by semiconductor devices
- H01H9/542—Contacts shunted by static switch means
- H01H2009/545—Contacts shunted by static switch means comprising a parallel semiconductor switch being fired optically, e.g. using a photocoupler
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Keying Circuit Devices (AREA)
Abstract
The utility model electronic arc-suppressor belongs to electricity field, particularly a kind ofly be suitable for the electronic arc-suppressor of mechanical switch as arc extinguishing purposes, comprise the power semiconductor in parallel with the two ends, contact of mechanical switch, it is characterized in that: the major loop of power semiconductor connects voltage detecting circuit, the output of voltage detecting circuit is connected with control circuit, and voltage detecting circuit is for detecting the closing of contact; Control circuit is connected with the control end of power semiconductor, control circuit provides power semiconductor conductivity control signal when voltage detecting circuit detects the closing of contact, for closing of contact spring arc extinguishing, the utility model electronic arc-suppressor has the advantage that ON time is short, overload capacity is strong, easy to use.
Description
Technical field
The utility model electronic arc-suppressor belongs to electricity field, and particularly a kind of being applicable to is applied to the electronic arc-suppressor as arc extinguishing purposes in contactor, relay, circuit breaker and other mechanical switch.
Background technology
At present in electric control system, widely use the mechanical switchs such as contactor, relay, circuit breaker and connection disjunction control is carried out to load, but due to the arc-chute of prior art, need to move breaking arc to certain length, just can work, there is arc quenching effect difference, during disjunction load, electric arc is large, cause the easy scaling loss of mechanical switch, the shortcoming that electric life is short.
For this reason, there is the arc-control device for mechanical switch arc extinguishing, if the patent No. is CN01201907.0, the patent that name is called " electronic arc-control device "; The patent No. is CN200910306608.6, name is called " mixing type alternating contactor passive switch driving controller based on optocoupler ", two patents disclose, adopt the mode that thyristor (power semiconductor) is in parallel with the two ends, contact of contactor, the working power of the control circuit of this electronic arc-suppressor is connected with the control coil of contactor, before the closing of contact of contactor, control circuit provides a signal controlling turn on thyristors, for contactor closed spring arc extinguishing; When the control coil dead electricity of contactor, contact is when disjunction, and turn on thyristors, by the filter capacitor discharge lag of control circuit, the drive singal of time delayed turn-off turn on thyristors, thyristor ends, and completes without electric arc breaking course.There is following shortcoming in it: must make turn on thyristors in advance in the closing of contact when reach contactor closed spring arc extinguishing, cause thyristor to need ON time longer, and easily damage by the heavy current impact of load connection moment.
Summary of the invention
The purpose of this utility model is the weak point avoiding existing electronic arc-suppressor, provides the electronic arc-suppressor that a kind of power semiconductor ON time when mechanical switch closes is short.
Realize the purpose of this utility model to reach by the following technical programs:
A kind of electronic arc-suppressor, it comprises the power semiconductor in parallel with the two ends, contact of mechanical switch, the major loop of power semiconductor connects voltage detecting circuit, and the output of voltage detecting circuit is connected with control circuit, and voltage detecting circuit is for detecting the closing of contact; Control circuit is connected with the control end of power semiconductor, and control circuit provides power semiconductor conductivity control signal when voltage detecting circuit detects the closing of contact, for closing of contact spring arc extinguishing.
A kind of electronic arc-suppressor, voltage detecting circuit is full wave voltage testing circuit.
A kind of electronic arc-suppressor, a voltage detecting circuit comprises the first voltage detecting circuit, the second voltage detecting circuit; Power semiconductor comprises the first power semiconductor, the second power semiconductor; Contact comprises the first contact, the second contact; First voltage detecting circuit is in parallel with the major loop of the first power semiconductor, and the major loop two ends of the first power semiconductor are used in parallel with the first two ends, contact; Second voltage detecting circuit is in parallel with the major loop of the second power semiconductor, and the major loop two ends of the second power semiconductor are used in parallel with the second two ends, contact.
A kind of electronic arc-suppressor, voltage detecting circuit comprises tertiary voltage testing circuit; Power semiconductor comprises the 3rd power semiconductor; Contact comprises the 3rd contact; Tertiary voltage testing circuit is in parallel with the major loop of the 3rd power semiconductor, and the major loop two ends of the 3rd power semiconductor are used in parallel with the 3rd two ends, contact.
A kind of electronic arc-suppressor, the major loop of power semiconductor connects current sensor, the output of current sensor is connected with control circuit, current sensor is by the On current of detection power semiconductor device, disconnect for detecting contact, control circuit cuts out power semiconductor conductivity control signal when current sensor detects that contact disconnects.
A kind of electronic arc-suppressor, current sensor is current transformer.
A kind of electronic arc-suppressor, control circuit is connected with the drive circuit of power semiconductor by least one electronic switch, the drive singal of driving power semiconductor device conducting is passed to the control pole of power semiconductor by the series circuit be made up of electric capacity and resistance by the major loop of power semiconductor, electronic switch is for controlling drive singal.
A kind of electronic arc-suppressor, electronic switch is photoelectrical coupler.
A kind of electronic arc-suppressor, the series circuit that electric capacity and resistance form is connected in parallel on the input and output two ends of the major loop of power semiconductor by device.
A kind of electronic arc-suppressor, voltage detecting circuit comprises a resistance, a photoelectrical coupler, and resistance is connected with the control end of photoelectrical coupler.
A kind of electronic arc-suppressor, control circuit is built-in with programming device.
A kind of electronic arc-suppressor, programming device is microcontroller.
A kind of electronic arc-suppressor, the input power of control circuit is provided by the input of the major loop of power semiconductor.
A kind of electronic arc-suppressor, control circuit has the input port for reader tool switching synchronization signals.
A kind of electronic arc-suppressor, the input of voltage detecting circuit is connected with the input and output two ends of the major loop of power semiconductor.
A kind of electronic arc-suppressor, the input of voltage detecting circuit is connected with the major loop load end of power semiconductor.
A kind of electronic arc-suppressor, voltage detecting circuit disconnects for detecting contact, and control circuit, when voltage detecting circuit detects that contact disconnects, provides power semiconductor pulse signal.
A kind of electronic arc-suppressor, voltage detecting circuit at least comprises a voltage transformer.
A kind of electronic arc-suppressor, control circuit is built-in with microcontroller, the major loop of power semiconductor connects current sensor, the On current of current sensor detection power semiconductor device, disconnect for detecting contact, the output signal of voltage detecting circuit and current sensor is passed to microcontroller, microcontroller has at least an output signal to be passed to the control end of power semiconductor, microcontroller provides power semiconductor conductivity control signal when voltage detecting circuit detects the closing of contact, microcontroller cuts out power semiconductor conductivity control signal when current sensor detects that contact disconnects.
A kind of electronic arc-suppressor, voltage detecting circuit disconnects for detecting mechanical switch, and control circuit, when voltage detecting circuit detects that mechanical switch disconnects, cuts out power semiconductor conductivity control signal.
A kind of electronic arc-suppressor, power semiconductor is thyristor.
Its operation principle: electronic arc-suppressor of the present utility model, in mechanical switch Operating In Persistent Current Mode process in parallel with it, voltage detecting circuit is for detecting the closing of contact of mechanical switch, when control circuit occurs closed in the contact one of mechanical switch, control power semiconductor conducting, realize the closed spring arc extinguishing to mechanical switch; Mechanical switch disconnects in the course of work, and the contact of mechanical switch first disconnects, and control circuit controls power semiconductor cut-off.
The utility model is reasonable in design, its contact based on mechanical switch is in connection process, as long as just larger electric arc can be produced when there is spring, by voltage detecting circuit for detecting the closing of contact of mechanical switch, in mechanical switch closing course, the contact one of mechanical switch occurs closed, voltage detecting circuit gives control circuit signal transmission again, control circuit is made to control power semiconductor conducting, realize object mechanical switch being closed to spring arc extinguishing, first closed by the contact of mechanical switch, control circuit controls power semiconductor conducting again, greatly reduce the operating time of power semiconductor, and reduce the impact of connecting load big current and power semiconductor being caused, power semiconductor ON time is extremely short, the effect of the closed spring arc extinguishing to mechanical switch can be played, when mechanical switch disconnects in the course of work, the contact of mechanical switch first disconnects, control circuit controls power semiconductor cut-off.
Accompanying drawing explanation
Fig. 1 is one of embodiment of the present utility model circuit theory diagrams.
Fig. 2 is two circuit theory diagrams of embodiment of the present utility model.
Fig. 3 is the three-circuit schematic diagram of embodiment of the present utility model.
Fig. 4 is four circuit theory diagrams of embodiment of the present utility model.
Fig. 5 is five circuit theory diagrams of embodiment of the present utility model.
Embodiment
As shown in Figure 1, one of embodiment of the present utility model, for a kind of for the electronic arc-suppressor of one pole mechanical switch arc extinguishing, comprise power semiconductor TR1 (be a thyristor), control circuit (A), voltage detecting circuit (B1) and the Current Transmit in parallel with the two ends, contact of mechanical switch SW1.Voltage detecting circuit (B1) is in parallel with the major loop of power semiconductor TR1, voltage detecting circuit (B1) output is connected with control circuit (A), Current Transmit is connected with the major loop of power semiconductor TR1, the On current of Current Transmit detection power semiconductor device TR1, contact for detecting mechanical switch SW1 disconnects, the major loop two ends of power semiconductor TR1 are connected with the two ends, contact of mechanical switch SW1 the input and output end points that J1 and J2 is respectively major loop respectively, mechanical switch SW1 is the mechanical switch of arc extinguishing needed for being connected with this device, J3 is control circuit (A) power input port.
Voltage detecting circuit (B1): comprise current-limiting resistance R1, photoelectrical coupler OPT1; The input of photoelectrical coupler OPT1 is in parallel with the major loop two ends of power semiconductor TR1 by current-limiting resistance R1, and the output of photoelectrical coupler OPT1 is connected with control circuit (A).
The course of work: being used for mechanical switch SW1 arc extinguishing by this device is example, control circuit (A) obtains electric, when the contact of mechanical switch SW1 disconnects, voltage detecting circuit (B1) inputs two ends input alternating voltage, it is comparatively stable that its output exports low and high level pulsewidth, the pulsewidth of the signal that control circuit (A) provides according to voltage detecting circuit (B1) identifies the closed of mechanical switch SW1, when there is closed situation in the contact of mechanical switch SW1, control circuit (A) controls power semiconductor TR1 conducting, realize the object of the closing of contact spring arc extinguishing to mechanical switch, in arc extinguishing process of bouncing to the closing of contact of mechanical switch SW1, power semiconductor TR1 ON time can shortly reach in 1 millisecond, in the course of work that mechanical switch SW1 disconnects, when Current Transmit output has power semiconductor TR1 Continuity signal, namely detect that the contact of mechanical switch SW1 disconnects, control circuit (A) controls power semiconductor TR1 to be ended, realize the object to mechanical switch disconnection arc extinguishing, power semiconductor TR1 shortly can reach half cycle in disconnection arc extinguishing ON time.
In the present embodiment, voltage detecting (B1) circuit will adopt full wave voltage testing circuit, and photoelectrical coupler OPT1 adopts two light-emitting diode photoelectrical coupler, and two photoelectrical coupler input reverse parallel connections also can be adopted to use.
As shown in Figure 2, embodiment two of the present utility model, for a kind of for the electronic arc-suppressor of one pole mechanical switch arc extinguishing, the major loop parallel connection (being namely connected with the input/output terminal of the major loop of power semiconductor TR1) of voltage detecting circuit (B1) and power semiconductor TR1 (being a thyristor), Current Transmit is connected with the major loop of power semiconductor TR1, the On current of detection power semiconductor device TR1, the output of Current Transmit is connected with control circuit (A), contact for detecting mechanical switch SW1 disconnects, mechanical switch SW1 is the mechanical switch of arc extinguishing needed for being connected with this device, J1, J2 is the input and output end points of major loop, control circuit (A) is by (Fig. 2 is built-in, also can for external) electronic switch OPT2 (being the photoelectrical coupler of a band SCR-output) is connected with the drive circuit of power semiconductor TR1, the drive singal of power semiconductor TR1 conducting is passed to the control pole of power semiconductor TR1 by the series circuit be made up of electric capacity C1 and resistance R2 by the major loop of power semiconductor TR1, electronic switch OPT2 is connected in the drive circuit of power semiconductor TR1, the voltage input end of electronic switch OPT2 is connected with voltage limiting device RV1 pressure limiting, for the protection of electronic switch OPT2, voltage detecting circuit (B1) output is connected with control circuit (A), J1 and J2 is respectively the input and output end points of major loop, J3 is control circuit (A) power input port.
Voltage detecting circuit (B1): comprise current-limiting resistance R1, photoelectrical coupler OPT1, the input of photoelectrical coupler OPT1 is by the major loop two ends parallel connection (namely the input/output terminal of the major loop of power semiconductor TR1 be connected) of current-limiting resistance R1 with power semiconductor TR1.
Control circuit (A): J3 port is used for input service power supply, input power is through transformer T1, rectification circuit BR1 rectification, electric capacity C2 and C3 filtering, IC1 voltage stabilizing, electric capacity C4 and C5 filtering are powered to microcontroller and interlock circuit thereof, the P0.3 mouth of microcontroller is connected with light-emitting diode display part, show for state, the P0.1 mouth of microcontroller is connected with the control end of electronic switch OPT2, the output signal of Current Transmit is passed to the P0.0 mouth of microcontroller through BR2 rectification, the output signal of voltage detecting circuit (B1) is connected to the P0.2 mouth of microcontroller, control circuit (A) is connected with the drive circuit of power semiconductor TR1 by electronic switch OPT2, J4 port is for inputting the input port of mechanical interrupteur SW 1 synchronizing signal, the utility model electronic arc-suppressor is when duplicate supply switches or motor positive and inverse controls application, prevent major loop by other switch bypass, control circuit (A) is caused to judge by accident.
The course of work: being used for mechanical switch SW1 arc extinguishing by this device is example, control circuit (A) obtains electric, when the contact of mechanical switch SW1 disconnects, voltage detecting circuit (B1) inputs two ends input alternating voltage, the photoelectrical coupler OPT1 output signal of voltage detecting circuit (B1) is supplied to the P0.2 mouth of microcontroller, microcontroller is measured by the pulsewidth exported photoelectrical coupler OPT1 and data are preserved, retain pulse width time when its pulse width time when low level and high level, when the contact of mechanical switch SW1 occurs closed, low level pulse width time can shorten and the pulsewidth of high level can be elongated, the microcontroller of control circuit (A) provides electronic switch OPT2 control signal, for overcome mechanical switch SW1 the closing of contact before power semiconductor TR1 shorting advance, electronic switch OPT2 exports conducting, in moment or the appearance spring of the closing of contact of mechanical switch SW1, very high voltage increase rate can be produced by power semiconductor TR1 two ends, electric capacity C1 can by higher drive current, power semiconductor TR1 triggering and conducting, realize the object of the closing of contact spring arc extinguishing of mechanical switch SW1, mechanical switch SW1 disconnects process, in the moment that mechanical switch SW1 disconnects, power semiconductor TR1 two ends can produce higher voltage increase rate, electric capacity C1 can by higher drive current, power semiconductor TR1 triggering and conducting, electric current is by power semiconductor TR1 bypass, realize the object that mechanical switch SW1 disconnects without electric arc, the current signal that the P0.0 mouth of microcontroller has Current Transmit to transmit inputs, namely detect that mechanical switch SW1 disconnects, close electronic switch OPT2 control signal, mechanical switch SW1 disconnects process, in the moment that mechanical switch SW1 disconnects, its two ends are just the zero point of voltage, power semiconductor TR1 not triggering and conducting, electric current need not pass through power semiconductor TR1 bypass, now voltage detecting circuit (B1) may be used for detecting mechanical switch SW1 disconnection, the voltage signal that microcontroller inputs according to voltage detecting circuit (B1), close the control signal of electronic switch OPT2, power semiconductor TR1 not triggering and conducting also can realize the object that mechanical switch SW1 disconnects without electric arc.
In the present embodiment, voltage detecting circuit (B1) will adopt full wave voltage testing circuit, photoelectrical coupler OPT1 adopts two light-emitting diode photoelectrical coupler, also two photoelectrical coupler input reverse parallel connections can be adopted to use, the major loop of power semiconductor TR1 connects Current Transmit, the On current of Current Transmit detection power semiconductor device TR1, disconnect for detecting contact, the output signal of voltage detecting circuit (B1) summation current transformer CT is passed to microcontroller, microcontroller has at least an output signal to be passed to the control end of power semiconductor TR1, microcontroller provides power semiconductor TR1 conductivity control signal when voltage detecting circuit (B1) detects the closing of contact of mechanical switch SW1, microcontroller closes power semiconductor TR1 conductivity control signal when Current Transmit detects that the contact of mechanical switch SW1 disconnects, also can substitute with other programming device at this microcontroller, as programmable array etc., operation principle is identical.
Have the following advantages in the present embodiment:
1. the series circuit of electric capacity C1, resistance R2 composition plays a part when arc extinguishing to transmit drive singal to power semiconductor TR1, under mechanical switch SW1 normally open, can also rise and absorb transient overvoltage (note: this series circuit is in parallel with the input/output terminal of the major loop of power semiconductor TR1 by device (voltage limiting device RV1)), for the protection of power semiconductor TR1, without the need to separately adding resistance capaciting absorpting circuit, simplify circuit; Utilize the physical features that electric capacity both end voltage can not be suddenlyd change, in the moment that mechanical switch closes or disconnects, produce very high voltage increase rate, here the capacitance selected is very little, can zero point a few microfarad to 0. more than zero microfarad, also can by large current drive power semiconductor device conducting, have that components and parts are not easy to damage, reliability is high, cost is low, the simple advantage of circuit; Because the power current by electric capacity under power frequency condition is less, adopt a voltage limiting device or adopt normally closed electronic switch to the power current bypass by electric capacity, significantly reduce the requirement of withstand voltage to electronic switch like this, reduce the cost of electronic switch and improve the reliability of electronic switch;
2. control circuit (A) is built-in with microcontroller, can simplify circuit further.
3. the major loop of power semiconductor TR1 connects Current Transmit, the On current of Current Transmit detection power semiconductor device TR1, disconnecting, can greatly reduce the ON time of the disjunction arc extinguishing of power semiconductor TR1 for detecting contact.
4. voltage detecting circuit (B1) disconnects for detecting mechanical switch SW1, in the moment that mechanical switch SW1 disconnects, its two ends are just the zero point of voltage, electric current need not pass through power semiconductor TR1 bypass, the voltage signal that microcontroller inputs according to voltage detecting circuit (B1), close the control signal of electronic switch OPT2, power semiconductor TR1 not triggering and conducting also can realize the object that mechanical switch SW1 disconnects without electric arc.
As shown in Figure 3, embodiment three of the present utility model, for a kind of electronic arc-suppressor (note: a phase inlet wire of its threephase load is directly connected with another phase power supply) controlling formula mechanical switch arc extinguishing for three-phase two, comprise control circuit (A), Current Transmit, the first power semiconductor TR1, the second power semiconductor TR2, the first voltage detecting circuit (B1), the second voltage detecting circuit (B2).First voltage detecting circuit (B1) is in parallel with the major loop of the first power semiconductor TR1, second voltage detecting circuit (B2) is in parallel with the major loop of the second power semiconductor TR2, first voltage detecting circuit (B1), the output of the second voltage detecting circuit (B2) is connected with control circuit (A), Current Transmit is connected with the major loop of the second power semiconductor TR2, for detecting the On current of the second power semiconductor TR2, first power semiconductor TR1, the major loop two ends of the second power semiconductor TR2 respectively with the first contact SW1-1 of mechanical switch SW1, second SW1-2 two ends, contact connects, J1 and J3, J2 and J4 is respectively the input and output end points of two-phase major loop, mechanical switch SW1 is the mechanical switch of arc extinguishing needed for being connected with this device, control circuit (A) power input and two power semiconductor TR1, the input of the major loop of TR2 connects.
First voltage detecting circuit (B1): comprise current-limiting resistance R1, photoelectrical coupler OPT1; The input of photoelectrical coupler OPT1 is in parallel with the major loop two ends of the first power semiconductor TR1 by current-limiting resistance R1, and the output of photoelectrical coupler OPT1 is connected with control circuit (A).
Second voltage detecting circuit (B2): comprise current-limiting resistance R2, photoelectrical coupler OPT2; The input of photoelectrical coupler OPT2 is in parallel with the major loop two ends of the second power semiconductor TR2 by current-limiting resistance R2, and the output of photoelectrical coupler OPT2 is connected with control circuit (A).
The course of work: being used for mechanical switch SW1 arc extinguishing by this device is example, control circuit (A) obtains electric, in the Operating In Persistent Current Mode process of mechanical switch SW1, because three-phase potential difference is 120 degree, at the contact SW1-1 of mechanical switch SW1, before SW1-2 is closed, first voltage detecting circuit (B1), cut-off when second voltage detecting circuit (B2) output loop is different, as long as the contact SW1-1 of mechanical switch SW1, when there is closed situation in SW1-2, first voltage detecting circuit (B1), second voltage detecting circuit (B2) output loop ends simultaneously, control circuit (A) controls two power semiconductor TR1, TR2 conducting, realize object mechanical switch being closed to spring arc extinguishing, two power semiconductor TR1 in bounce arc extinguishing process closed to mechanical switch SW1, TR2 ON time can shortly reach in 1 millisecond, in the course of work that mechanical switch SW1 disconnects, when Current Transmit output has power semiconductor TR2 Continuity signal, control circuit (A) controls two power semiconductor TR1, TR2 cut-offs, realize the object to mechanical switch disconnection arc extinguishing, two power semiconductor TR1, TR2 shortly can reach half cycle in disconnection arc extinguishing ON time.
In the present embodiment, two voltage detecting circuits will adopt full wave voltage testing circuit, and photoelectrical coupler OPT1, OPT2 adopt two light-emitting diode photoelectrical coupler, and two photoelectrical coupler input reverse parallel connections also can be adopted to use.
As shown in Figure 4, embodiment four of the present utility model, for a kind of electronic arc-suppressor controlling mechanical switch arc extinguishing for three-phase three, comprise control circuit (A), Current Transmit, the first power semiconductor TR1, the second power semiconductor TR2, the 3rd power semiconductor TR3, the first voltage detecting circuit (B1), the second voltage detecting circuit (B2), tertiary voltage testing circuit (B3).First voltage detecting circuit (B1) is in parallel with the major loop of the first power semiconductor TR1, second voltage detecting circuit (B2) is in parallel with the major loop of the second power semiconductor TR2, tertiary voltage testing circuit (B3) is in parallel with the major loop of the 3rd power semiconductor TR3, first voltage detecting circuit (B1), second voltage detecting circuit (B2), the output of tertiary voltage testing circuit (B3) is connected with control circuit (A), Current Transmit is connected with the major loop of the second power semiconductor TR2, for detecting the On current of the second power semiconductor TR2, power semiconductor TR1, TR2, the major loop two ends of TR3 respectively with the first contact SW1-1 of mechanical switch SW1, second contact SW1-2, 3rd SW1-3 two ends, contact connects, J1 and J4, J2 and J5, J3 and J6 is respectively the input and output end points of three-phase major loop, mechanical switch SW1 is the mechanical switch of arc extinguishing needed for being connected with this device, control circuit (A) power input is connected with the input of the major loop of power semiconductor (note: three power semiconductor TR1 can be selected, TR2, the wherein input of major loop of two of TR3 inputs as power supply).
First voltage detecting circuit (B1): comprise current-limiting resistance R1, photoelectrical coupler OPT1; The input of photoelectrical coupler OPT1 is by the major loop two ends parallel connection (namely the input and output two ends of major loop be connected) of current-limiting resistance R1 with the first power semiconductor TR1, and the output of photoelectrical coupler OPT1 is connected with control circuit (A).
Second voltage detecting circuit (B2): comprise current-limiting resistance R2, photoelectrical coupler OPT2; The input of photoelectrical coupler OPT2 is in parallel with the major loop two ends of the second power semiconductor TR2 by current-limiting resistance R2, and the output of photoelectrical coupler OPT2 is connected with control circuit (A).
Tertiary voltage testing circuit (B3): comprise current-limiting resistance R3, photoelectrical coupler OPT3; The input of photoelectrical coupler OPT3 is in parallel with the major loop two ends of the 3rd power semiconductor TR3 by current-limiting resistance R3, and the output of photoelectrical coupler OPT3 is connected with control circuit (A).
The course of work: being used for mechanical switch SW1 arc extinguishing by this device is example, control circuit (A) obtains electric, in the Operating In Persistent Current Mode process of mechanical switch SW1, mechanical switch SW1 closed before, because three-phase potential difference is 120 degree, first voltage detecting circuit (B1), second voltage detecting circuit (B2), cut-off when tertiary voltage testing circuit (B3) output loop is different, as long as the contact SW1-1 of mechanical switch SW1, SW1-2, when there is closed situation in SW1-3, when three voltage detecting circuit output loops end simultaneously, control circuit (A) controls three power semiconductor TR1, TR2, TR3 conducting, realize object mechanical switch being closed to spring arc extinguishing, three power semiconductor TR1 in bounce arc extinguishing process closed to mechanical switch SW1, TR2, TR3 ON time can shortly reach in 1 millisecond, in the course of work that mechanical switch SW1 disconnects, when Current Transmit output has power semiconductor TR2 Continuity signal, control circuit (A) controls three power semiconductor TR1, TR2, TR3 cut-offs, realize the object to mechanical switch disconnection arc extinguishing, three power semiconductor TR1, TR2, TR3 shortly can reach half cycle in disconnection arc extinguishing ON time.
In above four embodiments, power semiconductor adopts power semiconductor to be thyristor, and also can adopt the semiconductor device of other type, operation principle is identical; Current transformer is connected with the major loop of power semiconductor, the On current of detection power semiconductor device, and it has the following advantages:
1. utilize the current signal that the current transformer be connected with power semiconductor feeds back, disconnect for detecting mechanical switch, when detecting that mechanical switch disconnects, control circuit controls power semiconductor cut-off, realize the object that power semiconductor ends fast, greatly reduce the operating time of power semiconductor in disconnection arc extinguishing process.
2. because power semiconductor is by current work time short only Millisecond, the major loop wire of power semiconductor is very little also can carry great operating current, therefore current transformer can select micro-transformer of current, adopt punching connected mode, also major loop wire and current transformer can be directly adopted to be connected in series mode, current transformer has the advantages that volume is little, cost is low, and convenience and whole device are integrally.
As shown in Figure 5, embodiment five of the present utility model, for a kind of electronic arc-suppressor (note: a phase inlet wire of its threephase load is directly connected with another phase power supply) controlling formula mechanical switch arc extinguishing for three-phase two, comprise control circuit (A), the first power semiconductor TR1, the second power semiconductor TR2, the first voltage detecting circuit (B1), the second voltage detecting circuit (B2).First voltage detecting circuit (B1) is in parallel with the major loop of the first power semiconductor TR1, second voltage detecting circuit (B2) is in parallel with the major loop of the second power semiconductor TR2, first voltage detecting circuit (B1), the output of the second voltage detecting circuit (B2) is connected with control circuit (A), power semiconductor TR1, the major loop two ends of TR2 respectively with the first contact SW1-1 of mechanical switch SW1, second SW1-2 two ends, contact connects, J1 and J3, J2 and J4 is respectively the input and output end points of two-phase major loop, mechanical switch SW1 is the mechanical switch of arc extinguishing needed for being connected with this device, control circuit (A) power input and two power semiconductor TR1, the input of the major loop of TR2 connects.
First voltage detecting circuit (B1): comprise current-limiting resistance R1, voltage transformer T1; The input of voltage transformer T1 is in parallel with the major loop two ends of the first power semiconductor TR1 by current-limiting resistance R1, and the output of voltage transformer T1 is connected with control circuit (A).
Second voltage detecting circuit (B2): comprise current-limiting resistance R2, voltage transformer T2; The input of voltage transformer T2 is in parallel with the major loop two ends of the second power semiconductor TR2 by current-limiting resistance R2, and the output of voltage transformer T2 is connected with control circuit (A).
The course of work: being used for mechanical switch SW1 arc extinguishing by this device is example, control circuit (A) obtains electric, in the Operating In Persistent Current Mode process of mechanical switch SW1, as long as the contact SW1-1 of mechanical switch SW1, when there is closed situation in SW1-2, first voltage detecting circuit (B1), second voltage detecting circuit (B2) exports without the signal of telecommunication, control circuit (A) provides pulse signal and controls two power semiconductor TR1, TR2 conducting, realize object mechanical switch being closed to spring arc extinguishing, two power semiconductor TR1 in bounce arc extinguishing process closed to mechanical switch SW1, TR2 ON time can shortly reach in 1 millisecond, in the course of work that mechanical switch SW1 disconnects, when the first voltage detecting circuit (B1), the second voltage detecting circuit (B2) arbitrary output have the signal of telecommunication, control circuit (A) provides pulse signal and controls two power semiconductor TR1, TR2 conductings, realize the object to mechanical switch disconnection arc extinguishing, two power semiconductor TR1, TR2 shortly can reach half cycle in disconnection arc extinguishing ON time.
In the present embodiment, first voltage detecting circuit (B1), the second voltage detecting circuit (B2) are for detecting contact SW1-1, SW1-2 closed and disconnected of mechanical switch SW1, two voltage detecting circuits have employed voltage transformer, to mechanical switch disconnection detection, there is very fast response speed, decrease the lag time of this device at disconnection arc extinguishing.
The input of above embodiment voltage detecting circuit is all be connected with the input and output two ends of the major loop of power semiconductor, when load is not for when motor or electric capacity or infrequently this type of energy storage load of switching, voltage detecting circuit input can be connected with the major loop load end of power semiconductor, and operation principle is identical; The current sensor that above embodiment detects electric current have employed current transformer, has the advantage that cost is low, also other can detect the current sensor of electric currents, as Hall element etc.
The control circuit of the utility model electronic arc-suppressor is due to by detecting the contact closure condition of mechanical switch, without the need to obtaining synchronizing signal by contactor control coil, the mode of connection that the input power of control circuit can be provided by the input of the major loop of power semiconductor, be conducive to for the mechanical switch arc extinguishing without operation control coil such as circuit breaker, have that wiring is few, the feature of wide accommodation.
Claims (21)
1. an electronic arc-suppressor, it comprises the power semiconductor in parallel with the two ends, contact of mechanical switch, it is characterized in that:
The major loop of described power semiconductor connects voltage detecting circuit, and the output of described voltage detecting circuit is connected with control circuit, and described voltage detecting circuit is for detecting the described closing of contact;
Described control circuit is connected with the control end of described power semiconductor, and described control circuit provides described power semiconductor conductivity control signal when described voltage detecting circuit detects the described closing of contact, for described closing of contact spring arc extinguishing.
2. electronic arc-suppressor according to claim 1, is characterized in that: described voltage detecting circuit is full wave voltage testing circuit.
3. electronic arc-suppressor according to claim 1, is characterized in that: described voltage detecting circuit comprises the first voltage detecting circuit, the second voltage detecting circuit; Described power semiconductor comprises the first power semiconductor, the second power semiconductor; Described contact comprises the first contact, the second contact; Described first voltage detecting circuit is in parallel with the major loop of described first power semiconductor, and the major loop two ends of described first power semiconductor are used in parallel with described first two ends, contact; Described second voltage detecting circuit is in parallel with the major loop of described second power semiconductor, and the major loop two ends of described second power semiconductor are used in parallel with described second two ends, contact.
4. electronic arc-suppressor according to claim 3, is characterized in that: described voltage detecting circuit comprises tertiary voltage testing circuit; Described power semiconductor comprises the 3rd power semiconductor; Described contact comprises the 3rd contact; Described tertiary voltage testing circuit is in parallel with the major loop of described 3rd power semiconductor, and the major loop two ends of described 3rd power semiconductor are used in parallel with described 3rd two ends, contact.
5. electronic arc-suppressor according to claim 1, it is characterized in that: the major loop of described power semiconductor connects current sensor, the output of described current sensor is connected with described control circuit, described current sensor is by detecting the On current of described power semiconductor, disconnect for detecting described contact, described control circuit cuts out described power semiconductor conductivity control signal when described current sensor detects that described contact disconnects.
6. electronic arc-suppressor according to claim 5, is characterized in that: described current sensor is current transformer.
7. electronic arc-suppressor according to claim 1, it is characterized in that: described control circuit is connected with the drive circuit of described power semiconductor by least one electronic switch, drive the drive singal of described power semiconductor conducting to be passed to the control pole of described power semiconductor by the series circuit be made up of electric capacity and resistance by the major loop of described power semiconductor, described electronic switch is for controlling described drive singal.
8. electronic arc-suppressor according to claim 7, is characterized in that: described electronic switch is photoelectrical coupler.
9. electronic arc-suppressor according to claim 7, is characterized in that: described series circuit is connected in parallel on the input and output two ends of the major loop of described power semiconductor by device.
10. electronic arc-suppressor according to claim 1, is characterized in that: described voltage detecting circuit comprises a resistance, a photoelectrical coupler, and described resistance is connected with the control end of described photoelectrical coupler.
11. electronic arc-suppressors according to claim 1, is characterized in that: described control circuit is built-in with programming device.
12. electronic arc-suppressors according to claim 11, is characterized in that: described programming device is microcontroller.
13. electronic arc-suppressors according to claim 1, is characterized in that: the input power of described control circuit is provided by the input of the major loop of described power semiconductor.
14. electronic arc-suppressors according to claim 1, is characterized in that: described control circuit has the input port for inputting described mechanical switch synchronizing signal.
15. electronic arc-suppressors according to claim 1, is characterized in that: the input of described voltage detecting circuit is connected with the input and output two ends of the major loop of described power semiconductor.
16. electronic arc-suppressors according to claim 1, is characterized in that: the input of described voltage detecting circuit is connected with the major loop load end of described power semiconductor.
17. electronic arc-suppressors according to claim 1, it is characterized in that: described voltage detecting circuit disconnects for detecting described contact, described control circuit, when described voltage detecting circuit detects that described contact disconnects, provides described power semiconductor pulse signal.
18. electronic arc-suppressors according to claim 1, is characterized in that: described voltage detecting circuit at least comprises a voltage transformer.
19. electronic arc-suppressors according to claim 1, it is characterized in that: described control circuit is built-in with microcontroller, the major loop of described power semiconductor connects current sensor, described current sensor detects the On current of described power semiconductor, disconnect for detecting described contact, the output signal of described voltage detecting circuit and described current sensor is passed to described microcontroller, described microcontroller has at least an output signal to be passed to the control end of described power semiconductor, described microcontroller provides described power semiconductor conductivity control signal when described voltage detecting circuit detects the described closing of contact, described microcontroller cuts out described power semiconductor conductivity control signal when described current sensor detects that described contact disconnects.
20. electronic arc-suppressors according to claim 1, it is characterized in that: described voltage detecting circuit disconnects for detecting described mechanical switch, described control circuit, when described voltage detecting circuit detects that described mechanical switch disconnects, cuts out described power semiconductor conductivity control signal.
21. electronic arc-suppressors according to the arbitrary claim of claim 1 to 20, is characterized in that: described power semiconductor is thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420737815.3U CN204242870U (en) | 2014-03-07 | 2014-11-22 | Electronic arc-suppressor |
Applications Claiming Priority (15)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014201157585 | 2014-03-07 | ||
| CN201420116613 | 2014-03-07 | ||
| CN201420115758 | 2014-03-07 | ||
| CN2014201166137 | 2014-03-07 | ||
| CN201410093471 | 2014-03-07 | ||
| CN2014100934711 | 2014-03-07 | ||
| CN2014100934552 | 2014-03-07 | ||
| CN201410093455 | 2014-03-07 | ||
| CN201410150333 | 2014-04-04 | ||
| CN201420178613X | 2014-04-04 | ||
| CN2014101503332 | 2014-04-04 | ||
| CN201420178613 | 2014-04-04 | ||
| CN2014103996584 | 2014-08-07 | ||
| CN201410399658 | 2014-08-07 | ||
| CN201420737815.3U CN204242870U (en) | 2014-03-07 | 2014-11-22 | Electronic arc-suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242870U true CN204242870U (en) | 2015-04-01 |
Family
ID=52610742
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410719920.9A Active CN104392859B (en) | 2014-03-07 | 2014-11-22 | Electronic arc-suppressor |
| CN201420737815.3U Withdrawn - After Issue CN204242870U (en) | 2014-03-07 | 2014-11-22 | Electronic arc-suppressor |
| CN201610410574.5A Active CN106024520B (en) | 2014-03-07 | 2014-11-22 | Electronic arc-suppressor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410719920.9A Active CN104392859B (en) | 2014-03-07 | 2014-11-22 | Electronic arc-suppressor |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610410574.5A Active CN106024520B (en) | 2014-03-07 | 2014-11-22 | Electronic arc-suppressor |
Country Status (2)
| Country | Link |
|---|---|
| CN (3) | CN104392859B (en) |
| WO (1) | WO2015131718A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392859A (en) * | 2014-03-07 | 2015-03-04 | 广州市金矢电子有限公司 | Electronic arc extinguishing device |
| WO2020233151A1 (en) * | 2019-05-18 | 2020-11-26 | Guo Qiaoshi | Arc extinguishing circuit and device |
| CN114540774A (en) * | 2022-01-29 | 2022-05-27 | 深圳市瀚强科技股份有限公司 | Power supply and arc processing method |
| US12014893B2 (en) | 2018-09-19 | 2024-06-18 | Qiaoshi Guo | Arc-extinguishing circuit with two power supplies and apparatus |
| CN112243555B (en) * | 2019-05-18 | 2024-06-28 | 广州市金矢电子有限公司 | Arc extinguishing circuit and device |
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| CN105428118B (en) * | 2014-12-11 | 2018-06-22 | 广州市金矢电子有限公司 | Arc-control device and Switch without electric arc |
| WO2016180345A1 (en) * | 2015-05-13 | 2016-11-17 | 广州市金矢电子有限公司 | Two-terminal arc extinguishing device and hybrid switch |
| CN106712756B (en) * | 2016-01-24 | 2018-02-09 | 广州市金矢电子有限公司 | Composite switch |
| WO2017125057A1 (en) * | 2016-01-24 | 2017-07-27 | 广州市金矢电子有限公司 | Power device driving apparatus |
| CN106253256B (en) * | 2016-08-04 | 2018-12-04 | 浙江大学 | A kind of process chamber breakdown crowbar circuit of high-pressure pulse electric liquid foodstuffs sterilization |
| CN110993403B (en) * | 2017-07-24 | 2023-07-25 | 广州市金矢电子有限公司 | DC arc extinguishing circuit and device |
| WO2019029550A1 (en) * | 2017-08-10 | 2019-02-14 | 广州市金矢电子有限公司 | Arc extinguishing method and apparatus |
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| CN110967577B (en) * | 2019-10-30 | 2022-07-08 | 浙江工业大学 | Device and method for evaluating arc extinguishing effect of arc extinguisher |
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| CN2085092U (en) * | 1991-03-01 | 1991-09-18 | 赵为政 | A.c. arc-suppressing electronic module |
| JPH08148072A (en) * | 1994-11-18 | 1996-06-07 | Alps Electric Co Ltd | Switch with built-in breaker |
| FR2794890B1 (en) * | 1999-06-08 | 2001-08-10 | Crouzet Automatismes | ELECTROMECHANICAL RELAY ASSISTED SWITCHING BY SEMICONDUCTOR |
| CN2720596Y (en) * | 2004-08-10 | 2005-08-24 | 黄苹 | Three-phase ac. dynamic switch |
| CN101266888B (en) * | 2008-04-30 | 2010-07-07 | 哈尔滨工业大学 | A high-power mixed DC contactor and its control method |
| CN201440390U (en) * | 2009-06-03 | 2010-04-21 | 郭桥石 | Non-surge arc-extinguishing device |
| CN103021739B (en) * | 2012-11-30 | 2014-10-15 | 西安交通大学 | Hybrid direct-current circuit breaker |
| CN104392859B (en) * | 2014-03-07 | 2017-04-05 | 广州市金矢电子有限公司 | Electronic arc-suppressor |
-
2014
- 2014-11-22 CN CN201410719920.9A patent/CN104392859B/en active Active
- 2014-11-22 CN CN201420737815.3U patent/CN204242870U/en not_active Withdrawn - After Issue
- 2014-11-22 CN CN201610410574.5A patent/CN106024520B/en active Active
-
2015
- 2015-01-27 WO PCT/CN2015/071587 patent/WO2015131718A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392859A (en) * | 2014-03-07 | 2015-03-04 | 广州市金矢电子有限公司 | Electronic arc extinguishing device |
| US12014893B2 (en) | 2018-09-19 | 2024-06-18 | Qiaoshi Guo | Arc-extinguishing circuit with two power supplies and apparatus |
| WO2020233151A1 (en) * | 2019-05-18 | 2020-11-26 | Guo Qiaoshi | Arc extinguishing circuit and device |
| CN112243555A (en) * | 2019-05-18 | 2021-01-19 | 郭桥石 | Arc extinguishing circuit and device |
| CN112243555B (en) * | 2019-05-18 | 2024-06-28 | 广州市金矢电子有限公司 | Arc extinguishing circuit and device |
| CN114540774A (en) * | 2022-01-29 | 2022-05-27 | 深圳市瀚强科技股份有限公司 | Power supply and arc processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104392859B (en) | 2017-04-05 |
| WO2015131718A1 (en) | 2015-09-11 |
| CN106024520B (en) | 2018-05-29 |
| CN106024520A (en) | 2016-10-12 |
| CN104392859A (en) | 2015-03-04 |
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Granted publication date: 20150401 Effective date of abandoning: 20170405 |