CN209608538U - Inhibit the filter circuit of high frequency electrophoresis rectifier output noise ripple - Google Patents
Inhibit the filter circuit of high frequency electrophoresis rectifier output noise ripple Download PDFInfo
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- CN209608538U CN209608538U CN201920147759.0U CN201920147759U CN209608538U CN 209608538 U CN209608538 U CN 209608538U CN 201920147759 U CN201920147759 U CN 201920147759U CN 209608538 U CN209608538 U CN 209608538U
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- filter circuit
- resistance
- ripple
- frequency
- noise ripple
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Abstract
It include resistance higher hamonic wave circuit the utility model discloses a kind of filter circuit for inhibiting high frequency electrophoresis rectifier output noise ripple, AC-DC converter, hinder low frequency ripple filter circuit, hinder common-mode noise ripple current and resistance high-frequency noise ripple current, the resistance higher hamonic wave circuit, the AC-DC converter, the resistance low frequency ripple filter circuit, the resistance common-mode noise ripple current and the resistance high-frequency noise ripple current are sequentially connected in series, the resistance higher hamonic wave circuit is the low pass EMI filter circuit, low pass EMI filter circuit side is controlled to a power supply, the low pass EMI filter circuit other side is connected with the side that exchanges of the AC-DC converter, the DC side of the AC-DC converter is connected with the resistance low frequency ripple filter circuit.A kind of filter circuit of the inhibition high frequency electrophoresis rectifier output noise ripple of the utility model using the above structure eliminates high-frequency noise ripple of the hf rectifier in the application in electrophoretic painting, the direct current of outputting high quality.
Description
Technical field
The utility model relates to rectifiers to filter field, more particularly, to a kind of inhibition high frequency electrophoresis rectifier output noise
The filter circuit of ripple.
Background technique
High frequency electrophoresis rectifier because it is small in size, light-weight, power factor is high, voltage stabilized range is wide, easy to maintain etc. many
Advantage is the ideal rectifier power supply of distributed electrophoresis coating technique.In conversion process, closing conducting and cut-off moment can be generated very
High sharp pulse forms a kind of burst mode noise ripple of high frequency.The presence of the noise ripple will affect the matter of car body electrophoretic
Amount.Common LC filtering mode can only eliminate the low-frequency ripple signal of direct current output in electrophoresis rectifier, to high-frequency noise ripple
Reduction effect is not had.
The alternating current that high frequency electrophoresis rectifier input inputs in AC/DC converter is through full-wave rectification and capacitor filtering, electricity
Stream waveform is impulse form, and there are higher hamonic waves, will increase noise output.It is produced in alternating current-direct current conversion process switch conduction and cut-off
Raw very high sharp pulse, equipment internal wiring common mode interference cause the quality of noise ripple influence direct current output.
Utility model content
The purpose of the utility model is to provide a kind of filter circuits for inhibiting high frequency electrophoresis rectifier output noise ripple, disappear
Except high-frequency noise ripple of the hf rectifier in the application in electrophoretic painting, the direct current of outputting high quality.
To achieve the above object, the utility model provides a kind of filter for inhibiting high frequency electrophoresis rectifier output noise ripple
Wave circuit include resistance higher hamonic wave circuit, AC-DC converter, resistance low frequency ripple filter circuit, resistance common-mode noise ripple current with
And resistance high-frequency noise ripple current, the resistance higher hamonic wave circuit, the AC-DC converter, the resistance low frequency ripple filtered electrical
Road, the resistance common-mode noise ripple current and the resistance high-frequency noise ripple current are sequentially connected in series, the resistance higher hamonic wave electricity
Road is the low pass EMI filter circuit, and low pass EMI filter circuit side is controlled to a power supply, the low pass EMI filtered electrical
The road other side is connected with the side that exchanges of the AC-DC converter, the DC side of the AC-DC converter and the resistance low frequency wave
Line filter circuit is connected.
Preferably, the low pass EMI filter circuit is as three groups of capacitance groups in parallel and capacitance group described in being series at two groups
Between three reactance composition.
Preferably, the resistance low frequency ripple filter circuit is LC filter circuit, and the LC filter circuit is straight for reducing
Flow the low frequency LC filter circuit of output low frequency ripple signal.
Preferably, the resistance common-mode noise ripple current is for eliminating output common mode caused by electromagnetic interference inside equipment
The common mode inductance of noise ripple signal, the resistance high-frequency noise ripple current are the high frequency for eliminating diode rectifier bridge generation
The electrolytic capacitor of noise ripple signal.
Therefore, the filtering of a kind of inhibition high frequency electrophoresis rectifier output noise ripple of the utility model using the above structure
Circuit, power input low pass EMI filter circuit can reduce influence of the input higher hamonic wave interference to output noise ripple；It protects
Stay LC filter circuit for reducing direct current output low-frequency ripple signal；Direct current output increases common mode inductance for eliminating inside equipment
Output common mode noise ripple signal caused by electromagnetic interference；Direct current final output end parallel electrolytic capacitor, can eliminate diode
The HF noise signal that rectifier bridge generates, so that the direct current of DC output end outputting high quality is to guarantee that distributed electrophoresis applies
The quality of dress.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is that a kind of filter circuit overall structure for inhibiting high frequency electrophoresis rectifier output noise ripple of the utility model is shown
It is intended to.
Appended drawing reference
1, low pass EMI filter circuit；2, AC-DC converter；3, LC filter circuit；4, common mode inductance；5, electrolytic capacitor.
Specific embodiment
Embodiment
Fig. 1 is that a kind of filter circuit overall structure for inhibiting high frequency electrophoresis rectifier output noise ripple of the utility model is shown
It is intended to, as shown in Figure 1, a kind of filter circuit for inhibiting high frequency electrophoresis rectifier output noise ripple includes resistance higher hamonic wave electricity
Road, AC-DC converter, resistance low frequency ripple filter circuit, resistance common-mode noise ripple current and resistance high-frequency noise ripple current, resistance
Higher hamonic wave circuit, AC-DC converter, resistance low frequency ripple filter circuit, resistance common-mode noise ripple current and resistance high-frequency noise
Ripple current is sequentially connected in series.Resistance higher hamonic wave circuit is low pass EMI filter circuit 1,1 side of low pass EMI filter circuit and power supply
Be connected, 1 other side of low pass EMI filter circuit is connected with the side that exchanges of AC-DC converter 2, low pass EMI filter circuit 1 by
Three groups of capacitance groups in parallel and the three reactance composition being series between two groups of capacitance groups.The DC side of AC-DC converter 2 with
Resistance low frequency ripple filter circuit is connected.Resistance low frequency ripple filter circuit is LC filter circuit 3, and LC filter circuit 3 is for subtracting
The low frequency LC filter circuit of small direct current output low-frequency ripple signal.Resistance common-mode noise ripple current is for eliminating electricity inside equipment
The common mode inductance 4 of output common mode noise ripple signal caused by magnetic disturbance, resistance high-frequency noise ripple current are for eliminating two poles
The electrolytic capacitor 5 for the high-frequency noise ripple signal that pipe rectifier bridge generates.
Therefore, the filtering of a kind of inhibition high frequency electrophoresis rectifier output noise ripple of the utility model using the above structure
Circuit, power input low pass EMI filter circuit 1 can reduce influence of the input higher hamonic wave interference to output noise ripple；
Retain LC filter circuit 3 for reducing direct current output low-frequency ripple signal；Direct current output increases common mode inductance 4 for eliminating equipment
Output common mode noise ripple signal caused by internal electromagnetic interference；Direct current final output end parallel electrolytic capacitor 5, can eliminate two
The HF noise signal that pole pipe rectifier bridge generates, so that the direct current of DC output end outputting high quality is to guarantee distributed electrical
The quality of electrophoresis painting dressing.
It is specific embodiment of the present utility model above, but the protection scope of the utility model should not be limited to thoses mentioned above.Appoint
What those skilled in the art is in the technical scope disclosed by the utility model, and any changes or substitutions that can be easily thought of,
It should be covered within the scope of the utility model, therefore the protection scope of the utility model should be limited with claims
Subject to fixed protection scope.
Claims (4)
1. a kind of filter circuit for inhibiting high frequency electrophoresis rectifier output noise ripple, it is characterised in that: including hindering higher hamonic wave
Circuit, AC-DC converter, resistance low frequency ripple filter circuit, resistance common-mode noise ripple current and resistance high-frequency noise ripple current,
The resistance higher hamonic wave circuit, the AC-DC converter, the resistance low frequency ripple filter circuit, the resistance common-mode noise ripple
Circuit and the resistance high-frequency noise ripple current are sequentially connected in series, and the resistance higher hamonic wave circuit is low pass EMI filter circuit, institute
It states low pass EMI filter circuit side to be controlled to a power supply, the low pass EMI filter circuit other side and the AC-DC converter
Exchange side be connected, the DC side of the AC-DC converter is connected with the resistance low frequency ripple filter circuit.
2. a kind of filter circuit for inhibiting high frequency electrophoresis rectifier output noise ripple according to claim 1, feature
It is: three as three groups of capacitance groups in parallel and described in being series at two groups between capacitance group of the low pass EMI filter circuit
Reactance composition.
3. a kind of filter circuit for inhibiting high frequency electrophoresis rectifier output noise ripple according to claim 2, feature
Be: the resistance low frequency ripple filter circuit is LC filter circuit, and the LC filter circuit is for reducing direct current output low frequency
The low frequency LC filter circuit of ripple signal.
4. a kind of filter circuit for inhibiting high frequency electrophoresis rectifier output noise ripple according to claim 3, feature
Be: the resistance common-mode noise ripple current is to believe for eliminating output common mode noise ripple caused by electromagnetic interference inside equipment
Number common mode inductance, it is described resistance high-frequency noise ripple current be for eliminate diode rectifier bridge generation high-frequency noise ripple letter
Number electrolytic capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920147759.0U CN209608538U (en) | 2019-01-28 | 2019-01-28 | Inhibit the filter circuit of high frequency electrophoresis rectifier output noise ripple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920147759.0U CN209608538U (en) | 2019-01-28 | 2019-01-28 | Inhibit the filter circuit of high frequency electrophoresis rectifier output noise ripple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209608538U true CN209608538U (en) | 2019-11-08 |
Family
ID=68400908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920147759.0U Active CN209608538U (en) | 2019-01-28 | 2019-01-28 | Inhibit the filter circuit of high frequency electrophoresis rectifier output noise ripple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209608538U (en) |
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2019
- 2019-01-28 CN CN201920147759.0U patent/CN209608538U/en active Active
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