CN104808032B - The device that current wave distorts in AC magnetic field when starting stopping for eliminating - Google Patents
The device that current wave distorts in AC magnetic field when starting stopping for eliminating Download PDFInfo
- Publication number
- CN104808032B CN104808032B CN201510170682.5A CN201510170682A CN104808032B CN 104808032 B CN104808032 B CN 104808032B CN 201510170682 A CN201510170682 A CN 201510170682A CN 104808032 B CN104808032 B CN 104808032B
- Authority
- CN
- China
- Prior art keywords
- acquisition module
- module
- transformer
- auto
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
The present invention discloses a kind of device for being used to eliminate that current wave distorts in AC magnetic field when starting stopping, including distribution network source, auto-transformer, bidirectional triode thyristor, electric current current lifting device and the induction coil being sequentially connected, a phase acquisition module is connected to the output end of auto-transformer；One voltage acquisition module is connected to the output end of the auto-transformer, the phase acquisition module, voltage acquisition module are arranged in parallel, the phase acquisition module, the respective output end of voltage acquisition module are all connected to Logic control module, one external control module for being used to receive external command is connected to the Logic control module, the controllable silicon drive module for amplifying SCR control signal is provided between the control pole of the Logic control module and bidirectional triode thyristor, an accessory power supply is connected to controllable silicon drive module.The controllable silicon that the present invention is used to turn on and off output current is to turn on and off AC sine wave electric current in 0 degree and 180 degree, and the waveform of electric current is started and ended in 0 degree or 180 degree so that electric current will not produce big current change quantity when turning on and off.
Description
Technical field
The present invention relates to power frequency magnetic field noise immunity experimental technique field, more particularly to handed over during a kind of startup stopping for elimination
Flow the device that current wave distorts in magnetic field.
Background technology
The existing power frequency magnetic field generation device for meeting IEC61000-4-8 and GB/T 17626.8 is turning on and off injection
The alternating current of induction coil is random in phase.Nearby turned on and off if not in 0 degree and 180 degree, current source
Load-sensing coil impedance again it is very small, with regard to having these following problems：
1st, a big di/dt rate of change, this rate of change are far above the di/dt rates of change under power frequency, and power frequency magnetic field is done
The intensity for disturbing experiment depends on this rate of change, and this, which is equivalent to additionally to generate one in the beginning and end of experiment, is much larger than
The magnetic field intensity of normal assays, cause power frequency magnetic field EMC experiment severity increases.
Electric current steep rise and fall when the 2nd, turning on and off electric current, now sinusoidal current ripple waveform is distortion, if
Turn on and off near 90 degree and 270 degree, current wave waveform is distortion, can be more than IEC61000-4-8 and GB/T
8% requires specified in 17626.8 standards.
3rd, because the inductive load of inductive coil is present, the curent change of steep rise and fall can cause overshoot/owe punching
Cause wave distortion and increase and test severity.
4th, due to the presence of small parasitic capacitance, current waveform high frequency oscillation can be caused again under transient state excitation.
If the 5, electric spark, electric arcing can be produced again with mechanical switch control break-make, moment instantaneous intense electromagnetic is caused
Field radiation, adds the extra interference source unrelated with experiment, and mechanical switch is because of electric spark, electric arcing reduced lifetime.
The content of the invention
It is an object of the present invention to provide a kind of device for being used to eliminate that current wave distorts in AC magnetic field when startup stops, the use
The controllable silicon that the device that current wave distorts in AC magnetic field when eliminating startup and stopping is used to turn on and off output current is 0
Degree and 180 degree turn on and off AC sine wave electric current, and the waveform of electric current is started and ended in 0 degree or 180 degree, so
Electric current will not produce big current change quantity when turning on and off.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：One kind, which is used to eliminate, starts AC magnetic field when stopping
The device of middle current wave distortion, including：The distribution network source that is sequentially connected, auto-transformer, bidirectional triode thyristor, electric current current lifting device
And induction coil, a phase acquisition module are connected to the output end of the auto-transformer, the phase acquisition module is used to adopt
Collect the positive-negative phase of the AC sine wave of auto-transformer output；One voltage acquisition module is connected to the defeated of the auto-transformer
Go out end, the voltage acquisition module is used for the alternating voltage amplitude for gathering auto-transformer output, the phase acquisition module, electricity
Pressure acquisition module is arranged in parallel, and the phase acquisition module, the respective output end of voltage acquisition module are all connected to logic control
Module, an external control module for being used to receive external command are connected to the Logic control module, this Logic control module root
According to the control signal from external control module, the AC phases of phase acquisition module, auto-transformer alternating voltage amplitude
Produce the SCR control signal of control bidirectional triode thyristor grid break-make, the control of the Logic control module and bidirectional triode thyristor
The controllable silicon drive module for amplifying SCR control signal is provided between pole, an accessory power supply is connected to the controllable silicon
Drive module.
The further improved technical scheme of above-mentioned technical proposal is as follows：
In such scheme, the bidirectional triode thyristor in parallel single-phase silicon-controlled is formed by two.
Because above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：
The present invention is used to eliminate the device for starting that current wave distorts in AC magnetic field when stopping, which ensure that alternating current is just
String ripple is opened from 0 degree or 180 degree, if no matter external control signal whether open auto-transformer output voltage be more than open
Logic unit will all close the open signal of controllable silicon gate when opening threshold voltage, now if controllable silicon is in what is opened
Controlled properties silicon of the state due to controllable silicon in itself will not immediately turn off, and not have when only switching positive-negative polarity to 0 degree or 180 degree
Enough maintenance electric currents can just turn off.It is can be seen that from the course of work above for turning on and off the controllable of output current
Silicon is to turn on and off AC sine wave electric current in 0 degree and 180 degree, and the waveform of electric current is started and ended in 0 degree or 180 degree
, electric current will not produce big current change quantity when so turning on and off, so as to solve be related in background technology it is existing
Technical problem.
Brief description of the drawings
Fig. 1 is that the present invention is used to eliminate the apparatus structure schematic diagram for starting that current wave distorts in AC magnetic field when stopping.
In the figures above：1st, distribution network source；2nd, auto-transformer；3rd, bidirectional triode thyristor；4th, electric current current lifting device；5th, sense
Coil；6th, phase acquisition module；7th, voltage acquisition module；8th, Logic control module；9th, external control module；10th, controllable silicon drives
Dynamic model block；11st, accessory power supply.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described：
Embodiment：It is a kind of to be used to eliminate the device for starting that current wave distorts in AC magnetic field when stopping, including：It is sequentially connected
Distribution network source 1, auto-transformer 2, bidirectional triode thyristor 3, electric current current lifting device 4 and induction coil 5, a phase acquisition module 6
The output end of the auto-transformer 2 is connected to, the phase acquisition module 6 is used for the exchange for gathering the output of auto-transformer 2
The positive-negative phase of sine wave；One voltage acquisition module 7 is connected to the output end of the auto-transformer 2, the voltage acquisition mould
Block 7 is used for the alternating voltage amplitude for gathering the output of auto-transformer 2, and the phase acquisition module 6, voltage acquisition module 7 are in parallel
Set, the phase acquisition module 6,7 respective output end of voltage acquisition module are all connected to Logic control module 8, and one is used for
The external control module 9 for receiving external command is connected to the Logic control module 8, and this Logic control module 8 is according to from outer
The control signal of portion's control module 9, the AC phases of phase acquisition module 6, the alternating voltage amplitude of auto-transformer 2 produce control
The SCR control signal of the grid break-make of bidirectional triode thyristor 3 processed, the control pole of the Logic control module 8 and bidirectional triode thyristor 3
Between be provided with controllable silicon drive module 10 for amplifying SCR control signal, an accessory power supply 11 is connected to described controllable
Silicon drive module 10.
Above-mentioned bidirectional triode thyristor 3 in parallel single-phase silicon-controlled is formed by two.
The device course of work that the present embodiment is used to eliminate current wave distortion in AC magnetic field when starting stopping is as follows：Accompanying drawing
It is default current value that middle auto-transformer, which adjusts power distribution network supply voltage to the output of electric current current lifting device, bidirectional triode thyristor or two
Individual single-phase silicon-controlled control output current in parallel turns on and off.
Phase unit gathers the positive-negative phase of AC sine wave, is provided to logic unit and alternatively turns on positive negative sense
The foundation of controllable silicon, the alternating voltage amplitude of voltage cell collection auto-transformer output is simultaneously supplied to logic unit, only outer
Portion's control signal is in opening state and the alternating voltage amplitude of auto-transformer output is less than or equal to a low unlatching threshold values
Logic unit could export the open signal of controllable silicon gate during magnitude of voltage, and now AC sine wave is in 0 degree or 180 degree is attached
Closely, so as to ensure that alternating current sine wave is opened from 0 degree or 180 degree, if no matter whether external control signal is opened
Auto-transformer output voltage is more than the open signal that logic unit when opening threshold voltage will all close controllable silicon gate, now
If controllable silicon is in the state opened, the controlled properties silicon due to controllable silicon in itself will not immediately turn off, only to 0 degree
Or there is no enough maintenance electric currents just to turn off during 180 degree switching positive-negative polarity.It can be seen that and be used for from the course of work above
The controllable silicon for turning on and off output current is to turn on and off AC sine wave electric current, the waveform of electric current in 0 degree and 180 degree
It is to start and end in 0 degree or 180 degree, electric current will not produce big current change quantity when so turning on and off.So as to solve
Except prior art problem.
Logic unit is defeated on the basis of handling three external control signal, AC phases, alternating voltage amplitude signals
Go out the signal that controls positive negative sense controllable silicon grid to be switched on or off to controllable silicon driver element, controllable silicon driver element is by this signal
Power amplification applies to positive negative sense controllable silicon.Accessory power supply provides the power supply of an isolation for controllable silicon driving.
In said apparatus the semiconductor switch of its control electric current current lifting device be in transformer output 0 degree of AC sine wave or
What 180 degree nearby started and ended；The simple sinusoidal alternating current for being output to induction coil is started and cut near 0 degree or 180 degree
Only；Switch for controlling output current is semiconductor switch, is bidirectional triode thyristor or two in parallel single-phase silicon-controlled group
Into；There is phase acquisition unit to provide the foundation that phase alternatively turns on positive negative sense controllable silicon for logic unit；There is voltage acquisition
Unit provides automatic coupling voltage regulator output voltage values as the foundation compared with threshold voltage for logic unit；There is logic unit external
Three portion's control signal, AC phases, alternating voltage amplitude signals carry out controlling positive negative sense controllable silicon on the basis of logical operation
The signal being switched on or off.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, it should all be included within the scope of the present invention.
Claims (1)
1. a kind of be used to eliminate the device for starting that current wave distorts in AC magnetic field when stopping, it is characterised in that：Including：Connect successively
The distribution network source connect（1）, auto-transformer（2）, bidirectional triode thyristor（3）, electric current current lifting device（4）And induction coil（5）, a phase
Position acquisition module（6）It is connected to the auto-transformer（2）Output end, the phase acquisition module（6）For gathering self coupling
Transformer（2）The positive-negative phase of the AC sine wave of output；One voltage acquisition module（7）It is connected to the auto-transformer（2）
Output end, the voltage acquisition module（7）For gathering auto-transformer（2）The alternating voltage amplitude of output, the phase
Acquisition module（6）, voltage acquisition module（7）It is arranged in parallel, the phase acquisition module（6）, voltage acquisition module（7）It is respective
Output end is all connected to Logic control module（8）, an external control module for receiving external command（9）It is connected to described patrol
Collect control module（8）, this Logic control module（8）According to from external control module（9）Control signal and phase acquisition mould
Block（6）AC phases and auto-transformer（2）Alternating voltage amplitude produce control bidirectional triode thyristor（3）Grid break-make can
Control silicon control signal, the Logic control module（8）With bidirectional triode thyristor（3）Control pole between be provided with for amplify it is controllable
The controllable silicon drive module of silicon control signal（10）, an accessory power supply（11）It is connected to the controllable silicon drive module（10）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510170682.5A CN104808032B (en) | 2015-04-13 | 2015-04-13 | The device that current wave distorts in AC magnetic field when starting stopping for eliminating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510170682.5A CN104808032B (en) | 2015-04-13 | 2015-04-13 | The device that current wave distorts in AC magnetic field when starting stopping for eliminating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104808032A CN104808032A (en) | 2015-07-29 |
| CN104808032B true CN104808032B (en) | 2018-02-02 |
Family
ID=53693034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510170682.5A Active CN104808032B (en) | 2015-04-13 | 2015-04-13 | The device that current wave distorts in AC magnetic field when starting stopping for eliminating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104808032B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033177A (en) * | 2010-10-25 | 2011-04-27 | 华北电力大学 | Method and system for measuring power angle of electric power circuit of distribution network |
| CN203278226U (en) * | 2013-05-30 | 2013-11-06 | 西安科技大学 | Capacitance regulating type automatic tuning arc extinguishing device |
| CN203618201U (en) * | 2013-12-19 | 2014-05-28 | 山东建筑大学 | An electronic ballast reducing electrical network voltage waveform distortion through a bidirectional silicon controlled rectifier |
| CN204479624U (en) * | 2015-04-13 | 2015-07-15 | 苏州泰思特电子科技有限公司 | The device of current wave distortion in AC magnetic field when starting stopping for eliminating |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62189976A (en) * | 1986-02-14 | 1987-08-19 | Hitachi Ltd | Circulating current-type cycloconverter equipment |
| JPH1042559A (en) * | 1996-07-22 | 1998-02-13 | Fuji Electric Co Ltd | Step-up/down type power controller |
-
2015
- 2015-04-13 CN CN201510170682.5A patent/CN104808032B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102033177A (en) * | 2010-10-25 | 2011-04-27 | 华北电力大学 | Method and system for measuring power angle of electric power circuit of distribution network |
| CN203278226U (en) * | 2013-05-30 | 2013-11-06 | 西安科技大学 | Capacitance regulating type automatic tuning arc extinguishing device |
| CN203618201U (en) * | 2013-12-19 | 2014-05-28 | 山东建筑大学 | An electronic ballast reducing electrical network voltage waveform distortion through a bidirectional silicon controlled rectifier |
| CN204479624U (en) * | 2015-04-13 | 2015-07-15 | 苏州泰思特电子科技有限公司 | The device of current wave distortion in AC magnetic field when starting stopping for eliminating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104808032A (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103763803B (en) | The control method of electromagnetic resonance control circuit, electromagnetic heater and transistor | |
| CN203840210U (en) | AC inverter circuit | |
| CN104595557B (en) | Resistance-capacitance voltage reduction type power-saving and noise-reducing alternating current electromagnetic valve | |
| CN107809171A (en) | The driving method and drive circuit of Switching Power Supply and its power switch pipe | |
| CN201805366U (en) | Circuit for improving energy efficiency of electromagnetic oven and microwave oven | |
| CN104808032B (en) | The device that current wave distorts in AC magnetic field when starting stopping for eliminating | |
| CN201928192U (en) | Single-phase AC (alternating current) voltage regulation circuit | |
| CN204168527U (en) | A kind of microwave energy generator of high-power high-frequency rate stability | |
| CN204479624U (en) | The device of current wave distortion in AC magnetic field when starting stopping for eliminating | |
| CN202998532U (en) | Electromagnetic induction heating control circuit based on digital signal processing | |
| CN203301388U (en) | High-frequency and high-voltage power supply device for electrostatic precipitator | |
| CN203794538U (en) | Control device of elevator brake | |
| CN202334402U (en) | All-solid-state controller for star soft handover of motor | |
| CN202435041U (en) | Intelligent logic control device for reactive power compensation of electric network | |
| CN205160399U (en) | A power supply unit for elevator band -type brake coil | |
| CN204211417U (en) | A kind of elevator internal contracting brake control system | |
| CN207184370U (en) | A kind of single-phase alternating current motor control circuit | |
| CN205754103U (en) | A kind of motor magnetic circuit controls efficient energy-saving device | |
| CN203081821U (en) | Alternating-current fan frequency conversion speed regulation apparatus | |
| CN207150872U (en) | Electromagnetic Heating control circuit and electromagnetic heating apparatus | |
| CN106163070A (en) | A kind of high current ion source arc power | |
| CN102802289B (en) | Electromagnetic induction heating control circuit based on digital signal processing | |
| CN105553286B (en) | Adaptive low-noise DCDC isolated power supplies | |
| CN103326638B (en) | Switched reluctance motor controller optimize and revise circuit and optimization method | |
| CN207368667U (en) | Can separating brake anticipation MCR control devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |