CN208657137U - A kind of compensated line reducing LED power harmonic current - Google Patents
A kind of compensated line reducing LED power harmonic current Download PDFInfo
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- CN208657137U CN208657137U CN201821280566.4U CN201821280566U CN208657137U CN 208657137 U CN208657137 U CN 208657137U CN 201821280566 U CN201821280566 U CN 201821280566U CN 208657137 U CN208657137 U CN 208657137U
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- harmonic current
- power factor
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Abstract
The utility model discloses a kind of compensated lines for reducing LED power harmonic current, including sequentially connected EMC filter, current rectifying and wave filtering circuit and power converter, harmonic current compensation route of the busbar voltage by setting after current rectifying and wave filtering circuit rectification is connect with COMP power factor correction controller, and the output end of the COMP power factor correction controller is connect with the power converter.The utility model is originally by the busbar voltage after rectification on former active capability correction route by resistance R1, R2, R3, R4, COMP (compensation) foot of access control chip after capacitor C2 partial pressure and filter frequency, input voltage phase can be made to relatively lag behind in this way, the phase of input current can be allowed preferably to follow the phase of input voltage, thus increase power factor and reduction harmonic current.
Description
Technical field
The utility model relates to a kind of compensated lines for reducing LED power harmonic current.
Background technique
To realize energy-saving and emission-reduction, there are mandatory requirement, example in countries in the world to the LED illumination lamp harmonic current greater than 25W at present
It is the harmonic current standard of European Union if EN61000-3-2, is generally lost total harmonic wave using active PFC route
Sincere control can meet this standard within 20%；The present invention is created on the basis of active power number corrector
It is new perfect, rate of total harmonics can be controlled within 13%, preferably realize energy-saving and emission-reduction, improve the benefit of electric power resource
With rate；It is low in cost but to play very big effect.
Utility model content
The utility model aim is to provide a kind of benefit for reducing LED power harmonic current in view of the defects existing in the prior art
Repay route.
The utility model to achieve the above object, adopts the following technical scheme that a kind of benefit for reducing LED power harmonic current
Route, including sequentially connected EMC filter, current rectifying and wave filtering circuit and power converter are repaid, by the current rectifying and wave filtering circuit
Harmonic current compensation route of the busbar voltage by setting after rectification is connect with COMP power factor correction controller, described
The output end of COMP power factor correction controller is connect with the power converter.
Further, the harmonic current compensation route includes concatenated resistance R1, resistance R2 and resistance R3；Wherein, electric
The output end of the current rectifying and wave filtering circuit is accessed in one end of resistance R1, and the COMP power is accessed by capacitor C1 in one end of resistance R3
Factor correcting controller；The interior joint of the resistance R2 and resistance R3, other end ground connection are accessed in one end of capacitor C2；Resistance R4's
The interior joint of the resistance R3 and capacitor C1, other end ground connection are accessed in one end.
The utility model has the beneficial effects that the utility model be originally on former active capability correction route by rectification after
Busbar voltage passes through resistance R1, R2, R3, R4, COMP (compensation) foot of access control chip after capacitor C2 partial pressure and filter frequency, in this way
Input voltage phase can be made to relatively lag behind, the phase of input current can be allowed preferably to follow the phase of input voltage, to mention
High Power Factor and reduction harmonic current.
Detailed description of the invention
Fig. 1 is the circuit theory schematic diagram of the utility model.
Specific embodiment
Shown in Fig. 1, it is related to a kind of compensated line for reducing LED power harmonic current, including sequentially connected EMC filtering
Device, current rectifying and wave filtering circuit and power converter, the busbar voltage after current rectifying and wave filtering circuit rectification is by the humorous of setting
Wave current compensation route is connect with COMP power factor correction controller, the output end of the COMP power factor correction controller
It is connect with the power converter.
Wherein, the harmonic current compensation route includes concatenated resistance R1, resistance R2 and resistance R3；Wherein, resistance R1
One end access the output end of the current rectifying and wave filtering circuit, the COMP power factor is accessed by capacitor C1 in one end of resistance R3
Correcting controller；The interior joint of the resistance R2 and resistance R3, other end ground connection are accessed in one end of capacitor C2；One end of resistance R4
Access the interior joint of the resistance R3 and capacitor C1, other end ground connection.
The utility model is originally that the busbar voltage after rectification is passed through resistance R1 on former active capability correction route,
COMP (compensation) foot of access control chip, can make input voltage phase in this way after R2, R3, R4, capacitor C2 partial pressure and filter frequency
It relatively lags behind, the phase of input current can be allowed preferably to follow the phase of input voltage, so that increase power factor and reduction are humorous
Wave electric current.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (2)
1. a kind of compensated line for reducing LED power harmonic current, including sequentially connected EMC filter, current rectifying and wave filtering circuit
And power converter, which is characterized in that harmonic wave electricity of the busbar voltage by setting after current rectifying and wave filtering circuit rectification
Stream compensated line is connect with COMP power factor correction controller, the output end of the COMP power factor correction controller and institute
State power converter connection.
2. a kind of compensated line for reducing LED power harmonic current as described in claim 1, which is characterized in that the harmonic wave
Current compensation route includes concatenated resistance R1, resistance R2 and resistance R3；Wherein, the rectifying and wave-filtering is accessed in one end of resistance R1
The COMP power factor correction controller is accessed by capacitor C1 in one end of the output end of circuit, resistance R3；The one of capacitor C2
Terminate the interior joint into the resistance R2 and resistance R3, other end ground connection；The resistance R3 and capacitor are accessed in one end of resistance R4
The interior joint of C1, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821280566.4U CN208657137U (en) | 2018-08-09 | 2018-08-09 | A kind of compensated line reducing LED power harmonic current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821280566.4U CN208657137U (en) | 2018-08-09 | 2018-08-09 | A kind of compensated line reducing LED power harmonic current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208657137U true CN208657137U (en) | 2019-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821280566.4U Active CN208657137U (en) | 2018-08-09 | 2018-08-09 | A kind of compensated line reducing LED power harmonic current |
Country Status (1)
| Country | Link |
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| CN (1) | CN208657137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999542A (en) * | 2019-05-08 | 2020-11-27 | 上海海立电器有限公司 | Method for debugging harmonic current |
-
2018
- 2018-08-09 CN CN201821280566.4U patent/CN208657137U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999542A (en) * | 2019-05-08 | 2020-11-27 | 上海海立电器有限公司 | Method for debugging harmonic current |
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