CN205829514U - The control device automatically strengthening rotor excited voltage is increased with welding current - Google Patents
The control device automatically strengthening rotor excited voltage is increased with welding current Download PDFInfo
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- CN205829514U CN205829514U CN201620399140.5U CN201620399140U CN205829514U CN 205829514 U CN205829514 U CN 205829514U CN 201620399140 U CN201620399140 U CN 201620399140U CN 205829514 U CN205829514 U CN 205829514U
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- welding
- current
- welding current
- arc
- exciting
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Abstract
This utility model provides a kind of increasing with welding current automatically to strengthen the control device of rotor excited voltage, it is characterized in that the welding current sensor including being arranged on arc generator stator winding, the welding current signal commutator being connected with welding current sensor, weldingvoltage crystalline substance explain pipe controlled rectifier, exciting current filter capacitor, exciting current controller, initial excitation commutator and current-limiting resistance.When welding and producing electric current, arc welding alternator rotor is delivered to by taking out with the weldingvoltage of welding current linear change by welding current sensor, just a powerful exciting current can be obtained, and can change with the change of welding current adaptively, owing to this exciting current is exactly the component part of welding current, therefore can improve the welding current of arc generator, meet welding requirements.The feature that this control device has simple in construction, reliability is high, dynamic characteristic is good.
Description
Technical field
This utility model relates to a kind of device, especially one of controlling can be increased with welding current and automatically strengthen arc-welding and send out
The control device of rotor excitation voltage, belongs to technical field of electronic control.
Background technology
For arc generator, it is common that the stator interior at electromotor is embedded with Exciting Windings for Transverse Differential Protection, Exciting Windings for Transverse Differential Protection voltage warp
Over commutation, filter, compare regulation after, deliver to generator amature and carry out excitation.Owing to the rotor excited voltage of arc generator is wanted
Ask and strengthen with the increase of welding current, and supply rotor excited voltage increase time, rotor excitation current as well as increase,
The bonding power that so guarantee is enough.This it is internally embedded special Exciting Windings for Transverse Differential Protection, or harmonic wave at generator unit stator
Winding, and by external circuit, welding current is detected, to control corresponding exciting current supply, reach welding current
Although the mode of the regulation of increase and decrease and welding current is feasible, but arc generator stator must be embedded with special Exciting Windings for Transverse Differential Protection, and
Control circuit is complicated, cost is high, and operational reliability is poor.Therefore, it is necessary to prior art is improved.
Summary of the invention
The purpose of this utility model be to provide a kind of arc generator stator without embedding special Exciting Windings for Transverse Differential Protection, directly profit
With welding winding and by special control circuit, arc generator welding current is carried out excitation, it is achieved increase with welding current
And automatically strengthen the control device of arc welding alternator rotor excitation voltage.
This utility model is completed by following technical proposal: one increases with welding current and automatically strengthens rotor-exciting electricity
The control device of pressure, it is characterised in that include the welding current sensor being arranged on arc generator stator winding, and welds
Current sensor be connected welding current signal commutator, weldingvoltage crystalline substance explain pipe controlled rectifier, exciting current filter capacitor,
Exciting current controller, initial excitation commutator and current-limiting resistance.
Described welding current sensor is set to two, is separately positioned in a, b phase of arc generator stator winding, two
Pipe is explained with two weldingvoltage crystalline substances after being connected with two welding current signal commutators respectively in one end of welding current sensor can
The control of control rectifier is the most connected, explains pipe with two weldingvoltage crystalline substances controlled after the other end of two welding current sensors is connected
The negative electrode of commutator is connected, and is the most also connected with two exciting current filter capacitors and exciting current controller and is followed by arc-welding generating
Machine rotor one end, this end is also connected with current-limiting resistance and initial excitation commutator and is followed by the c phase of arc generator stator winding, arc
The electric welding generator rotor other end is connected with " star " type interface of arc generator stator winding.
This utility model proposes based on following arc welding performance: arc voltage: VArc= 20+0.04IWeldering, i.e. arc voltage
VArcIt is with welding current IWelderingAnd keep straight linear to increase and decrease, as long as weldingvoltage V in welding processWelderingIt is directly fed back to arc
Electric welding generator rotor FZ coil two ends, just can obtain the excitation voltage changed with welding current change, i.e. VEncourage=VWeldering；And with
Welding current IWelderingIncrease, excitation voltage VEncourageAlso increasing, vice versa.That is welding current IWelderingThe biggest, arc voltage
VArcThe biggest, excitation voltage VEncourageThe biggest, otherwise on the contrary.Thus achieve excitation voltage V simplyEncourageWith welding current IWelderingBetween shape
Become the open loop positive feedback Self Adaptive Control of complete direct ratio.
This utility model has following advantages and effect: use such scheme, it is convenient to whether enter with arc generator
Entering welded condition is control signal, once weld and producing electric current, this welding can be detected by welding current sensor
Electric current, and give arc welding alternator rotor by taking out with the weldingvoltage of welding current linear change, thus obtain one powerful
Exciting current, and can change with the change of welding current adaptively, owing to this exciting current is exactly the group of welding current
Become part, therefore can improve the welding current of arc generator, meet welding requirements.This control apparatus structure is simple, it is not necessary to
The Exciting Windings for Transverse Differential Protection that in stator FD, coiling is special, therefore substantially increases the reliability of device and the dynamic characteristic of arc generator.
Accompanying drawing explanation
Fig. 1 is this utility model circuit diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described further.
What this utility model provided increases with welding current and strengthens the control device of arc welding alternator rotor excitation, including
The welding current sensor being arranged on arc generator stator winding, the welding current signal being connected with welding current sensor
Commutator, weldingvoltage crystalline substance explain pipe controlled rectifier, excitation voltage filter capacitor, exciting current controller, initial excitation rectification
Device and current-limiting resistance；
Specifically:
Described welding current sensor is set to L1, L2 two, forms for magnetic core coiling, arc generator stator FD welding around
A, b phase of group is each passed through L1, L2 of correspondence；The left end of two welding currents sensor L1, L2 respectively with welding current signal
Commutator D1, D2 anode is connected, and the negative electrode of welding current signal commutator D1, D2 and weldingvoltage crystalline substance explain pipe controlled rectifier
The control of K1, K2 is the most connected；Pipe is explained with two weldingvoltage crystalline substances controlled after the right-hand member of two welding currents sensor L1, L2 is connected
The negative electrode of commutator K1, K2 is connected, and is the most also connected with two excitation voltages filter capacitor C1, C2 and exciting current controller W
After, receive arc welding alternator rotor FZ right-hand member by carbon brush, slip ring, this end also one end with current-limiting resistance R is connected, another of R
End is connected with the negative electrode of initial excitation commutator D3, and the anode of D3 is connected with the c phase of arc generator stator FD winding；Arc-welding is sent out
Rotor FZ left end is connected with " star " point of arc generator stator FD welding winding by carbon brush, slip ring.
Its operation principle is:
When the most not welding, the c phase remanent magnetism voltage of arc generator stator FD is through commutator D3, current-limiting resistance R, by this
Voltage feeds back to one end of generator amature FZ coil by carbon brush, slip ring, and it is fixed that the other end through rotor FZ returns to electromotor
" star " point of sub-FD three-phase windings constitutes loop, forms arc generator welding open-circuit excitation electric current, i.e. rotor FZ forms zero load
Excitation field, owing to this process is automatic positive feedback system, arc generator stator FD will set up at once by current-limiting resistance R
The floating voltage set, adjusts the resistance of current-limiting resistance R, i.e. can determine that the welding floating voltage of arc generator group and minimum weldering
Connect electric current.
2., when welding occurs, a phase in arc generator stator FD three-phase windings has welding current to flow through with b phase, passes
Welding current sensor L1, L2 of arc generator stator FD welding winding a phase and b phase will produce signal, and this signal is welded
After current signal commutator D1, D2 rectification, weldingvoltage crystalline substance is made to explain pipe controlled rectifier K1, K2 by phase conduction, a, b is relative
Excitation voltage filter capacitor C1, C2 is sent to filter after the weldingvoltage rectification answered, and through given the encouraging of regulation of exciting current controller W
After magnetoelectricity stream, give arc welding alternator rotor FZ pitch of the laps by carbon brush, slip ring and carry out excitation, thus constitute arc generator and turn
The excitation voltage V of sub-FZ coilEncourage=VWeldering=20+0.04IWelderingWith welding current IWelderingThe relation of linear change, therefore, as welding current IWeldering
Increase, weldingvoltage VWelderingIncrease therewith, excitation voltage VEncourageAlso increase, the exciting current I of energized circuitEncourageIt is consequently increased, otherwise
Then realize the control of adverse consequences.
Claims (2)
1. the control device increasing increasing rotor excited voltage automatically with welding current, it is characterised in that include being arranged on arc
Welding current sensor on electric welding generator stator winding, the welding current signal commutator being connected with welding current sensor,
Weldingvoltage crystalline substance explains pipe controlled rectifier, exciting current filter capacitor, exciting current controller, initial excitation commutator and current limliting
Resistance.
The control device increasing increasing rotor excited voltage automatically with welding current the most according to claim 1, its feature
It is that described welding current sensor is set to two, is separately positioned in a, b phase of arc generator stator winding, two welding
One end of current sensor be connected with two welding current signal commutators respectively after with two weldingvoltage crystalline substances explain manage controlled whole
The control of stream device is the most connected, and the other end of two welding current sensors explains pipe controlled rectification with two weldingvoltage crystalline substances after being connected
The negative electrode of device is connected, and being the most also connected with two exciting current filter capacitors and exciting current controller is followed by arc generator and turns
Sub-one end, this end is also connected with current-limiting resistance and initial excitation commutator and is followed by the c phase of arc generator stator winding, and arc-welding is sent out
The rotor other end is connected with " star " type interface of arc generator stator winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620399140.5U CN205829514U (en) | 2016-05-05 | 2016-05-05 | The control device automatically strengthening rotor excited voltage is increased with welding current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620399140.5U CN205829514U (en) | 2016-05-05 | 2016-05-05 | The control device automatically strengthening rotor excited voltage is increased with welding current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205829514U true CN205829514U (en) | 2016-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620399140.5U Expired - Fee Related CN205829514U (en) | 2016-05-05 | 2016-05-05 | The control device automatically strengthening rotor excited voltage is increased with welding current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205829514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111030529A (en) * | 2020-01-14 | 2020-04-17 | 云南巨能科技发展有限公司 | Excitation control system of arc welding generator |
-
2016
- 2016-05-05 CN CN201620399140.5U patent/CN205829514U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111030529A (en) * | 2020-01-14 | 2020-04-17 | 云南巨能科技发展有限公司 | Excitation control system of arc welding generator |
| CN111030529B (en) * | 2020-01-14 | 2023-04-25 | 云南巨能科技发展有限公司 | Excitation control system of arc welding generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161221 Termination date: 20210505 |