CN105406736B - The power circuit and anti-interference method of mixer PLC - Google Patents
The power circuit and anti-interference method of mixer PLC Download PDFInfo
- Publication number
- CN105406736B CN105406736B CN201510995230.0A CN201510995230A CN105406736B CN 105406736 B CN105406736 B CN 105406736B CN 201510995230 A CN201510995230 A CN 201510995230A CN 105406736 B CN105406736 B CN 105406736B
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- inductance
- capacitance
- value range
- transformer
- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Ac-Ac Conversion (AREA)
Abstract
The invention discloses the power circuit anti-interference methods of mixer PLC a kind of, it includes that will exchange 380V to be depressured as alternating current 220V through breaker, transformer isolation, it is rectified into direct current 24V through Switching Power Supply again, it is characterized in that being connected with double-T shaped LC low-pass filter circuits between transformer secondary output and Switching Power Supply input terminal；The double-T shaped LC low-pass filter circuits include the C1 for being parallel to transformer secondary output, are parallel to the C2 of Switching Power Supply input terminal, one end is connected with C1 after L1, L2 series connection, one end is connected with C2, one end is connected with the other end of C1 after L3, L4 series connection, one end is connected with the other end of C2, and resistance R1 is connected between the connecting pin of L1, L2 and the connecting pin of L3, L4；The present invention uses the method that double-T shaped LC low-pass filters and ring structure iron core transformer are in series in PLC power inputs, eliminate that the higher hamonic wave of high-voltage frequency converter, solenoid valve, motor, contactor switch on and off the electromagnetic interference of generation and spark is interfered to being interfered caused by PLC, using effect is good, has been applied to drag the control system of mixer high pressure main motor and other industry mining equipment.
Description
Technical field
The present invention relates to a kind of power circuit of PLC, the power circuit and anti-interference method of specifically a kind of PLC,
More particularly to the power circuit and anti-interference method of a kind of mixer PLC.
Background technology
As the frequency converter of high-voltage frequency converter and other patterns is widely used in such as mixer dragging and other industry industrial and mineral
Equipment, the pollution generated to power grid is increasingly severe, the higher hamonic wave of high-voltage frequency converter, solenoid valve, motor, contactor connect and
It disconnects the electromagnetic interference generated and spark is interfered to programmable controller used by control system（PLC）Work bring seriously
Interference, or even cause to malfunction.
Invention content
The object of the present invention is to provide the power circuits and anti-interference method of a kind of mixer PLC.
The present invention, which adopts the following technical scheme that, realizes its goal of the invention, and a kind of mixer is anti-with the power circuit of PLC
Interference method, it is alternating current 220V including that will exchange 380V through breaker, transformer isolation decompression, then is rectified into through Switching Power Supply
Direct current 24V is connected with double-T shaped LC low-pass filter circuits between transformer secondary output and Switching Power Supply input terminal.
Double-T shaped LC low-pass filter circuits of the present invention include the C1 for being parallel to transformer secondary output, are parallel to Switching Power Supply
One end is connected with C1 after the C2 of input terminal, L1, L2 series connection, and one end is connected with C2, the other end phase of one end and C1 after L3, L4 series connection
Even, one end is connected with the other end of C2, and resistance R1 is connected between the connecting pin of L1, L2 and the connecting pin of L3, L4.
The value range of capacitance C1 of the present invention is 1100pF~4700pF, the value range of capacitance C2 be 1100pF~
The value range of 4700pF, inductance L1 are 4mH~8mH, and the value range of inductance L2 is 4mH~8mH, the value range of inductance L3
Value range for 4mH~8mH, inductance L4 is 4mH~8mH, and the value range of resistance R1 is 150K Ω~200K Ω.
Transformer of the present invention is ring structure iron core transformer, magnetic induction intensity >=1.56T of silicon steel sheet used.
A kind of power circuit of mixer PLC, it includes that will exchange 380V to be depressured through breaker, transformer isolation to hand over
220V is flowed, then direct current 24V is rectified into through Switching Power Supply, is connected between transformer secondary output and Switching Power Supply input terminal double-T shaped
LC low-pass filter circuits.
Double-T shaped LC low-pass filter circuits of the present invention include the C1 for being parallel to transformer secondary output, are parallel to Switching Power Supply
One end is connected with C1 after the C2 of input terminal, L1, L2 series connection, and one end is connected with C2, the other end phase of one end and C1 after L3, L4 series connection
Even, one end is connected with the other end of C2, and resistance R1 is connected between the connecting pin of L1, L2 and the connecting pin of L3, L4.
The value range of capacitance C1 of the present invention is 1100pF~4700pF, the value range of capacitance C2 be 1100pF~
The value range of 4700pF, inductance L1 are 4mH~8mH, and the value range of inductance L2 is 4mH~8mH, the value range of inductance L3
Value range for 4mH~8mH, inductance L4 is 4mH~8mH, and the value range of resistance R1 is 150K Ω~200K Ω.
Transformer of the present invention is ring structure iron core transformer, magnetic induction intensity >=1.56T of silicon steel sheet used.
Due to the adoption of the above technical scheme, the present invention preferably realizes goal of the invention, in PLC power inputs using double
The method that T-type LC low-pass filters and ring structure iron core transformer are in series eliminates higher hamonic wave, the electromagnetism of high-voltage frequency converter
Valve, motor, contactor switch on and off the electromagnetic interference of generation and spark is interfered to being interfered caused by PLC, and using effect is good
It is good, it has been applied to drag the control system of mixer high pressure main motor and other industry mining equipment.
Description of the drawings
Fig. 1 is the circuit block diagram of the prior art；
Fig. 2 is the circuit block diagram of the present invention.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments.
As shown in Figure 1, as the frequency converter of high-voltage frequency converter and other patterns is widely used in such as mixer dragging and its
His industry mining equipment, the pollution generated to power grid is increasingly severe, and the higher hamonic wave of high-voltage frequency converter, motor, connects solenoid valve
Tentaculum switches on and off the electromagnetic interference of generation and spark is interfered to programmable controller used by control system（PLC）Work
Severe jamming is brought, or even causes to malfunction.
As shown in Figure 2, the power circuit anti-interference method of a kind of mixer PLC, it includes that will exchange 380V through open circuit
Device, transformer isolation decompression are alternating current 220V, then are rectified into direct current 24V through Switching Power Supply, in transformer secondary output and Switching Power Supply
Double-T shaped LC low-pass filter circuits are connected between input terminal.
Double-T shaped LC low-pass filter circuits of the present invention include the C1 for being parallel to transformer secondary output, are parallel to Switching Power Supply
One end is connected with C1 after the C2 of input terminal, L1, L2 series connection, and one end is connected with C2, the other end phase of one end and C1 after L3, L4 series connection
Even, one end is connected with the other end of C2, and resistance R1 is connected between the connecting pin of L1, L2 and the connecting pin of L3, L4.
The value range of capacitance C1 of the present invention is 1100pF~4700pF, the value range of capacitance C2 be 1100pF~
The value range of 4700pF, inductance L1 are 4mH~8mH, and the value range of inductance L2 is 4mH~8mH, the value range of inductance L3
Value range for 4mH~8mH, inductance L4 is 4mH~8mH, and the value range of resistance R1 is 150K Ω~200K Ω.
Transformer of the present invention is ring structure iron core transformer, magnetic induction intensity >=1.56T of silicon steel sheet used.
A kind of power circuit of mixer PLC, it includes that will exchange 380V to be depressured through breaker, transformer isolation to hand over
220V is flowed, then direct current 24V is rectified into through Switching Power Supply, is connected between transformer secondary output and Switching Power Supply input terminal double-T shaped
LC low-pass filter circuits.
Double-T shaped LC low-pass filter circuits of the present invention include the C1 for being parallel to transformer secondary output, are parallel to Switching Power Supply
One end is connected with C1 after the C2 of input terminal, L1, L2 series connection, and one end is connected with C2, the other end phase of one end and C1 after L3, L4 series connection
Even, one end is connected with the other end of C2, and resistance R1 is connected between the connecting pin of L1, L2 and the connecting pin of L3, L4.
The value range of capacitance C1 of the present invention is 1100pF~4700pF, the value range of capacitance C2 be 1100pF~
The value range of 4700pF, inductance L1 are 4mH~8mH, and the value range of inductance L2 is 4mH~8mH, the value range of inductance L3
Value range for 4mH~8mH, inductance L4 is 4mH~8mH, and the value range of resistance R1 is 150K Ω~200K Ω.
Transformer of the present invention is ring structure iron core transformer, magnetic induction intensity >=1.56T of silicon steel sheet used.
The present invention is with Switching Power Supply output DC24V/200W INPUT:The present invention is further described for 220VAC.It is disconnected
Road device uses the C65N D2 2A of Schneider company production, transformer to use BK-300 annular iron core transformers（300VA 380V/
220V）, capacitance is using non-polar condenser, C1,1100pF/500V；C2,1100pF/500V；Inductance L1, L3 use 8mH,
L2, L4 use 8mH, resistance R1 to use Mirror Grinding RJJ 200K Ω/2W.When work, breaker shields, ring
Sections core transformer plays isolation（Band shielded layer）And Anti-Jamming, low-pass filter is formed to higher hamonic wave by inductance and capacitance
Inhibiting effect has been interfered with various.
The present invention is on test platform Multisim 13.0, working power peak value 200V, frequency 50Hz, interference signal
Crest voltage is 10V, and the frequency of experimental simulation corresponding 3 times, 5 times, 7 times and 9 subharmonic sends out interference signal, as a result show
There are many curve smoothing after the filtering for invention.
Claims (4)
1. the power circuit anti-interference method of mixer PLC a kind of, it includes that will exchange 380V through breaker, transformer isolation
Decompression is alternating current 220V, then is rectified into direct current 24V through Switching Power Supply, it is characterized in that in transformer secondary output and Switching Power Supply input terminal
Between be connected with double-T shaped LC low-pass filter circuits；The double-T shaped LC low-pass filter circuits include the electricity for being parallel to transformer secondary output
The capacitance C2 for holding C1, being parallel to Switching Power Supply input terminal, one end is connected with one end of capacitance C1 after inductance L1, L2 series connection, another
End is connected with capacitance C2, and one end is connected with the other end of capacitance C1 after inductance L3, L4 series connection, the other end of the other end and capacitance C2
It is connected, resistance R1 is connected between the connecting pin and the connecting pin of inductance L3, L4 of inductance L1, L2；The transformer is ring-like iron
Core transformer, magnetic induction intensity >=1.56T of silicon steel sheet used.
2. the power circuit anti-interference method of mixer according to claim 1 PLC, it is characterized in that the capacitance C1
Value range is 1100pF~4700pF, and the value range of capacitance C2 is 1100pF~4700pF, and the value range of inductance L1 is
The value range of 4mH~8mH, inductance L2 are 4mH~8mH, and the value range of inductance L3 is 4mH~8mH, the value model of inductance L4
It encloses for 4mH~8mH, the value range of resistance R1 is 150K Ω~200K Ω.
3. a kind of power circuit of mixer PLC, it includes that will exchange 380V to be depressured as exchange through breaker, transformer isolation
220V, then it is rectified into direct current 24V through Switching Power Supply, it is characterized in that being connected between transformer secondary output and Switching Power Supply input terminal
Double-T shaped LC low-pass filter circuits；The double-T shaped LC low-pass filter circuits include the capacitance C1 for being parallel to transformer secondary output, parallel connection
One end is connected with one end of capacitance C1 after the capacitance C2 of Switching Power Supply input terminal, inductance L1, L2 series connection, the other end and capacitance C2
It is connected, one end is connected with the other end of capacitance C1 after inductance L3, L4 series connection, and the other end is connected with the other end of capacitance C2, inductance
It is connected with resistance R1 between the connecting pin and the connecting pin of inductance L3, L4 of L1, L2；The transformer is ring structure iron core transformer,
Magnetic induction intensity >=1.56T of silicon steel sheet used.
4. the power circuit of mixer PLC according to claim 3, it is characterized in that the value range of the capacitance C1 is
The value range of 1100pF~4700pF, capacitance C2 are 1100pF~4700pF, and the value range of inductance L1 is 4mH~8mH, electricity
The value range for feeling L2 is 4mH~8mH, and the value range of inductance L3 is 4mH~8mH, the value range of inductance L4 be 4mH~
The value range of 8mH, resistance R1 are 150K Ω~200K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995230.0A CN105406736B (en) | 2015-12-24 | 2015-12-24 | The power circuit and anti-interference method of mixer PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510995230.0A CN105406736B (en) | 2015-12-24 | 2015-12-24 | The power circuit and anti-interference method of mixer PLC |
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| Publication Number | Publication Date |
|---|---|
| CN105406736A CN105406736A (en) | 2016-03-16 |
| CN105406736B true CN105406736B (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510995230.0A Active CN105406736B (en) | 2015-12-24 | 2015-12-24 | The power circuit and anti-interference method of mixer PLC |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105775663A (en) * | 2016-04-01 | 2016-07-20 | 枣庄中联水泥有限公司 | Switching value signal anti-interference system for remote material belt transportation |
Citations (8)
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|---|---|---|---|---|
| CN2765381Y (en) * | 2004-10-29 | 2006-03-15 | 柏飞特（北京）电子技术研究所有限公司 | A power filter |
| CN101436787A (en) * | 2008-12-23 | 2009-05-20 | 江苏省电力公司镇江供电公司 | Method for automatically devoting microcomputer control standby power for enlarging inner bridge wire splice |
| CN101489343A (en) * | 2009-01-08 | 2009-07-22 | 王家诚 | Multi-inductor combined electrical power EMI filter |
| CN102222973A (en) * | 2011-06-14 | 2011-10-19 | 湘潭世通电气有限公司 | Direct-current power supply device for variable-propeller controller of large wind motor |
| CN203104261U (en) * | 2013-02-21 | 2013-07-31 | 成都必控科技股份有限公司 | Electromagnetic compatibility filter |
| CN103701427A (en) * | 2013-12-31 | 2014-04-02 | 康海峰 | Filter at front end of outer part of household appliance for improving power spectral density of power line communication |
| CN204290901U (en) * | 2014-11-20 | 2015-04-22 | 重庆大及电子科技有限公司 | Signal filter circuit |
| CN205377689U (en) * | 2015-12-24 | 2016-07-06 | 益阳橡胶塑料机械集团有限公司 | PLC's power supply circuit for banbury mixer |
-
2015
- 2015-12-24 CN CN201510995230.0A patent/CN105406736B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2765381Y (en) * | 2004-10-29 | 2006-03-15 | 柏飞特（北京）电子技术研究所有限公司 | A power filter |
| CN101436787A (en) * | 2008-12-23 | 2009-05-20 | 江苏省电力公司镇江供电公司 | Method for automatically devoting microcomputer control standby power for enlarging inner bridge wire splice |
| CN101489343A (en) * | 2009-01-08 | 2009-07-22 | 王家诚 | Multi-inductor combined electrical power EMI filter |
| CN102222973A (en) * | 2011-06-14 | 2011-10-19 | 湘潭世通电气有限公司 | Direct-current power supply device for variable-propeller controller of large wind motor |
| CN203104261U (en) * | 2013-02-21 | 2013-07-31 | 成都必控科技股份有限公司 | Electromagnetic compatibility filter |
| CN103701427A (en) * | 2013-12-31 | 2014-04-02 | 康海峰 | Filter at front end of outer part of household appliance for improving power spectral density of power line communication |
| CN204290901U (en) * | 2014-11-20 | 2015-04-22 | 重庆大及电子科技有限公司 | Signal filter circuit |
| CN205377689U (en) * | 2015-12-24 | 2016-07-06 | 益阳橡胶塑料机械集团有限公司 | PLC's power supply circuit for banbury mixer |
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| CN105406736A (en) | 2016-03-16 |
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