CN207039445U - A kind of Anti-surging single- stage PFC circuit of reversed excitation and power supply - Google Patents
A kind of Anti-surging single- stage PFC circuit of reversed excitation and power supply Download PDFInfo
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- CN207039445U CN207039445U CN201720813829.2U CN201720813829U CN207039445U CN 207039445 U CN207039445 U CN 207039445U CN 201720813829 U CN201720813829 U CN 201720813829U CN 207039445 U CN207039445 U CN 207039445U
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- electric capacity
- circuit
- reversed excitation
- rectifier bridge
- power supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
A kind of Anti-surging single- stage PFC circuit of reversed excitation and power supply,The circuit includes rectifier bridge and is connected to the PFC module of rectifier bridge rear class,PFC module includes the first inductance,The first to two resistance,First diode,The first to three electric capacity,First inductance and first resistor are connected in parallel between the output plus terminal of rectifier bridge and the output plus terminal of circuit of reversed excitation,The output negative terminal of one end connection rectifier bridge and the output negative terminal of circuit of reversed excitation of first to three electric capacity,The output plus terminal of other end connection rectifier bridge and the anode of the first diode of first electric capacity,The negative electrode of first diode connects the other end of the second electric capacity,And the other end of the 3rd electric capacity and the output plus terminal of circuit of reversed excitation are connected by second resistance,PFC module also includes the one way conducting device being connected in parallel in second resistance,The conducting direction of one way conducting device is towards the direction of the second electric capacity.The circuit can be better protected from the generation compared with high surge voltage, improve the reliability of circuit.
Description
Technical field
Power electronic circuit is the utility model is related to, more particularly to a kind of Anti-surging single- stage PFC circuit of reversed excitation and power supply.
Background technology
As shown in figure 1, in single- stage PFC circuit of reversed excitation, in order to realize high PF values, the commutation capacitor behind rectifier bridge is all
Smaller, when there is high pressure (surge) voltage, the absorbent energy of filter capacitor C1 is very little, and because inductance L1 and electricity
Resistance R1 has higher inhibition, so most of surge energy, into electric capacity C2, is absorbed simultaneously by diode D1 by electric capacity C2
Energy is stored, then energy is released by resistance R2, electric capacity C3 is flowed into and is converted to utilisable energy.In circuit practical application, inductance
L1 inductance values are bigger, often a few to tens of mH, can effectively block surge voltage, but when surge voltage is come every time,
Inductance L1 can be given to charge simultaneously so that inductance L1 can store some energy, after surge voltage disappears, the energy of inductance L1 storages
Release, and first charged to electric capacity C3, because to ensure PF values, electric capacity C3 capacity in single- stage PFC circuit is smaller so that electric capacity
Higher surge voltage can be produced above C3.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of Anti-surging single- stage PFC circuit of reversed excitation
And power supply, the generation compared with high surge voltage is better protected from, improves the reliability of circuit.
To achieve the above object, the utility model uses following technical scheme：
A kind of Anti-surging single- stage PFC circuit of reversed excitation, including rectifier bridge and the PFC module for being connected to the rectifier bridge rear class,
The PFC module includes the first inductance, first resistor, second resistance, the first diode, the first electric capacity, the second electric capacity and the
Three electric capacity, first inductance and the first resistor are connected in the output plus terminal of the rectifier bridge and the circuit of reversed excitation in parallel
Output plus terminal between, the output that one end of first electric capacity, the second electric capacity and the 3rd electric capacity connects the rectifier bridge is born
End and the output negative terminal of the circuit of reversed excitation, the other end of first electric capacity connect the rectifier bridge output plus terminal and
The anode of first diode, the negative electrode of first diode connect the other end of second electric capacity, and by described
Second resistance, which connects the other end of the 3rd electric capacity and the output plus terminal of the circuit of reversed excitation, the PFC module, also to be included
The one way conducting device being connected in parallel in the second resistance, the conducting direction of the one way conducting device is towards the described second electricity
The direction of appearance.
Preferably, the one way conducting device is diode.
A kind of power supply, including described Anti-surging single- stage PFC circuit of reversed excitation.
The power supply is LED power.
A kind of LED illumination device, including LED and described power supply.
Advantageous effects of the present utility model：
The utility model increases the one way conducting device in parallel with second resistance in single- stage PFC circuit of reversed excitation, and it can be with
The part energy for being stored and being released by the first inductance when surge voltage is arrived is delivered to the second electric capacity, effectively absorbs originally
The portion of energy of the 3rd electric capacity can be released to from the first inductance so that higher surge voltage will not be produced on the 3rd electric capacity, from
And effectively suppress the surge voltage at the second electric capacity both ends, protect circuit below.
Brief description of the drawings
Fig. 1 is the circuit structure diagram of existing single- stage PFC circuit of reversed excitation；
Fig. 2 is a kind of circuit structure diagram of embodiment of the utility model Anti-surging single- stage PFC circuit of reversed excitation.
Embodiment
Embodiment of the present utility model is elaborated below in conjunction with accompanying drawing.It is emphasized that the description below is only
It is exemplary, rather than in order to limit the scope of the utility model and its application.
Refering to Fig. 2, in a kind of embodiment, Anti-surging single- stage PFC circuit of reversed excitation includes rectifier bridge BD1 and is connected to described
The PFC module of rectifier bridge BD1 rear classes, the PFC module include the first inductance L1, first resistor R1, second resistance R2, the one or two
Pole pipe D1, the first electric capacity C1, the second electric capacity C2 and the 3rd electric capacity C3, the first inductance L1 and the first resistor R1 are in parallel
It is connected between the output plus terminal of the rectifier bridge BD1 and the output plus terminal HV+ of the circuit of reversed excitation, the first electric capacity C1,
Two electric capacity C2 and the 3rd electric capacity C3 one end connects output negative terminal and the output of the circuit of reversed excitation of the rectifier bridge BD1
Negative terminal HV-, the first electric capacity C1 other end connect the output plus terminal of the rectifier bridge BD1 and the first diode D2
Anode, the negative electrode of the first diode D1 connects the other end of the second electric capacity C2, and passes through the second resistance R2
Connect the other end of the 3rd electric capacity C3 and the output plus terminal HV+ of the circuit of reversed excitation.The PFC module also includes parallel connection
One way conducting device on the second resistance R2, the conducting direction of the one way conducting device is that electric current is electric from described first
Sense L1 flows to the direction of the second electric capacity C2.
As shown in Fig. 2 in a preferred embodiment, the one way conducting device is diode D2.
It is demonstrated experimentally that the circuit before increase diode D2 can only be by 2KV differential mode surge voltage, and increase diode
Circuit after D2 can pass through 3KV differential mode surge voltages.After increasing diode D2, the lightning protection surge electricity of single- stage PFC circuit of reversed excitation
Pressure can improve 1KV.
The single- stage PFC circuit of reversed excitation can be applied in the power supply of LED device.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (5)
1. a kind of Anti-surging single- stage PFC circuit of reversed excitation, including rectifier bridge and the PFC module for being connected to the rectifier bridge rear class, institute
Stating PFC module includes the first inductance, first resistor, second resistance, the first diode, the first electric capacity, the second electric capacity and the 3rd
Electric capacity, first inductance and the first resistor are connected in the output plus terminal of the rectifier bridge and the circuit of reversed excitation in parallel
Between output plus terminal, one end of first electric capacity, the second electric capacity and the 3rd electric capacity connects the output negative terminal of the rectifier bridge
And the output negative terminal of the circuit of reversed excitation, the other end of first electric capacity connect output plus terminal and the institute of the rectifier bridge
State the anode of the first diode, the negative electrode of first diode connects the other end of second electric capacity, and passes through described the
Two resistance connect the other end of the 3rd electric capacity and the output plus terminal of the circuit of reversed excitation, it is characterised in that the PFC moulds
Block also includes the one way conducting device being connected in parallel in the second resistance, and the conducting direction of the one way conducting device is towards institute
State the direction of the second electric capacity.
2. Anti-surging single- stage PFC circuit of reversed excitation as claimed in claim 1, it is characterised in that the one way conducting device is two
Pole pipe.
3. a kind of power supply, it is characterised in that including Anti-surging single- stage PFC circuit of reversed excitation as claimed in claim 1 or 2.
4. power supply as claimed in claim 3, it is characterised in that the power supply is LED power.
5. a kind of LED illumination device, including LED and power supply, it is characterised in that the power supply is electricity as claimed in claim 3
Source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720813829.2U CN207039445U (en) | 2017-07-06 | 2017-07-06 | A kind of Anti-surging single- stage PFC circuit of reversed excitation and power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720813829.2U CN207039445U (en) | 2017-07-06 | 2017-07-06 | A kind of Anti-surging single- stage PFC circuit of reversed excitation and power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207039445U true CN207039445U (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720813829.2U Active CN207039445U (en) | 2017-07-06 | 2017-07-06 | A kind of Anti-surging single- stage PFC circuit of reversed excitation and power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207039445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129880A (en) * | 2019-11-19 | 2020-05-08 | 国网江苏省电力有限公司电力科学研究院 | Plug and socket for low-voltage direct-current bidirectional power transmission equipment |
-
2017
- 2017-07-06 CN CN201720813829.2U patent/CN207039445U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129880A (en) * | 2019-11-19 | 2020-05-08 | 国网江苏省电力有限公司电力科学研究院 | Plug and socket for low-voltage direct-current bidirectional power transmission equipment |
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