CN107887898A - A kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit - Google Patents
A kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit Download PDFInfo
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- CN107887898A CN107887898A CN201610871314.8A CN201610871314A CN107887898A CN 107887898 A CN107887898 A CN 107887898A CN 201610871314 A CN201610871314 A CN 201610871314A CN 107887898 A CN107887898 A CN 107887898A
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- pfc circuit
- pfc
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters
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Abstract
The invention discloses a kind of surging protection circuit and power electronic equipment of single-phase power factor correcting pfc circuit, the input of the pfc circuit is connected with live wire L, in addition to gas-discharge tube and piezo-resistance, wherein：The piezo-resistance is connected in parallel between the input and zero line of pfc circuit and live wire the L connections；One end of the gas-discharge tube is connected with the zero line, other end connection ground wire.Using the surging protection circuit and power electronic equipment of Single-phase PFC provided by the invention, its printing board PCB layout is simple, small volume, and cost is low.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly to a kind of Single-phase PFC (Power Factor
Correction, PFC) circuit surging protection circuit and power electronic equipment.
Background technology
In electric and electronic technical field, the carrying out surge protection characteristic of power electronic product is most important, and it is directly related to
The life cycle of product and reliable continuous service ability.In general, the input of the power electronic product of single-phase electricity input have
PFC pfc circuit, when there is surge excitation, pfc circuit is highly prone to disturb.Surge excitation can flow through PFC electricity
Semiconductor devices in road, cause the overvoltage of these devices, overcurrent damage.
In the prior art, the surging protection circuit of Single-phase PFC circuit is as shown in figure 1, the circuit includes three pressures
Quick resistance and a gas-discharge tube, first piezo-resistance RV1 one end are connected with live wire L, and the one of the other end and gas-discharge tube
End connection；Second piezo-resistance RV2 one end is connected with zero line, the other end and the company of the first piezo-resistance RV1 and gas-discharge tube
Contact connects；3rd piezo-resistance RV3 one end is connected with live wire L, and the other end is connected with zero line；Described gas-discharge tube one end with
First piezo-resistance RV1 and the second piezo-resistance RV2 connections, other end ground connection.Differential mode surge between live wire L and zero line is by
Three piezo-resistance RV3 absorb；Common mode surge between live wire L and ground wire is absorbed by the first piezo-resistance RV1 and gas-discharge tube；
Common mode surge between zero line and ground wire is absorbed by the second piezo-resistance RV2 and gas-discharge tube.
Need to absorb wave by three piezo-resistances and a gas-discharge tube in the surging protection circuit of prior art
Excitation is gushed, realizes the carrying out surge protection to pfc circuit, the printing board PCB in surging protection circuit is laid out difficult, volume
Greatly, cost is high.
The content of the invention
The embodiment of the present invention provides a kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit, to solve
The problem of PCB layouts are difficult in the surging protection circuit of existing Single-phase PFC circuit, and volume is big, and cost is high.
The embodiment of the invention discloses a kind of surging protection circuit of single-phase power factor correcting pfc circuit, the PFC electricity
The input on road is connected with live wire L, and the surging protection circuit also includes gas-discharge tube and piezo-resistance, wherein：
The piezo-resistance is connected in parallel between the input and zero line of pfc circuit and live wire the L connections；
One end of the gas-discharge tube is connected with the zero line, other end connection ground wire.
Further, the circuit also includes：Main road protective tube；
The main road protective tube is connected with the piezo-resistance, what the main road protective tube was not connected with the piezo-resistance
One end is connected with the live wire L, and the input that the pfc circuit is connected with live wire L connects the main road protective tube and the pressure
The concatenation point of quick resistance.
Further, the circuit also includes：Protective tube；
The protective tube is connected with the piezo-resistance, one end and institute that the protective tube is not connected with the piezo-resistance
State the input connection that pfc circuit is connected with live wire L.
Further, the pfc circuit includes：Rectification circuit, the first booster circuit, the second booster circuit, the first electric capacity
With the second electric capacity；
The input of the rectification circuit is connected with live wire L, an output end of the rectification circuit and the first boosting electricity
Road is connected, and another output end is connected with the second booster circuit；
An output end of one output end of first booster circuit as the pfc circuit, first boosting
Another output end of circuit connects an output end of second booster circuit, another output end of second booster circuit
Another output end as the pfc circuit；
The tie point of first booster circuit and the second booster circuit connection is connected with the zero line；
First electric capacity is connected between two output ends of first booster circuit；
Second electric capacity is connected between two output ends of second booster circuit.
Further, the pfc circuit also includes：5th diode and the 6th diode；
The anode of 5th diode is connected with an output end of the rectification circuit, the moon of the 5th diode
Pole connects an output end of the pfc circuit；
The negative electrode of 6th diode is connected with another output end of the rectification circuit, the sun of the 6th diode
Pole connects another output end of the pfc circuit.
Further, the pfc circuit also includes：5th diode and the 6th diode；
The anode of 5th diode connects with the input that the pfc circuit is connected with live wire L, the five or two pole
The negative electrode of pipe connects an output end of the pfc circuit；
The negative electrode of 6th diode connects with the input that the pfc circuit is connected with live wire L, the six or two pole
The anode of pipe connects another output end of the pfc circuit.
Further, first booster circuit includes：First inductance, the 3rd diode and first switch pipe；
One end of first inductance is connected with an output end of the rectification circuit, other end connection the described 3rd 2
The anode of pole pipe, the output end of the negative electrode of the 3rd diode as first booster circuit；
The tie point connection that one end of the first switch pipe is connected with first inductance and the 3rd diode, the other end
Another output end as first booster circuit.
Further, second booster circuit includes：Second inductance, the 4th diode and second switch pipe；
One end of second inductance is connected with an output end of the rectification circuit, other end connection the described 4th 2
The negative electrode of pole pipe, the output end of the anode of the 4th diode as second booster circuit；
The tie point connection that one end of the second switch pipe is connected with second inductance and the 4th diode, the other end
Another output end as second booster circuit.
Further, the second switch pipe includes the switching tube of inverse parallel body diode, and the first switch pipe includes
The switching tube of anti-paralleled diode.
The embodiments of the invention provide a kind of power electronic equipment, including the single-phase power factor correcting pfc circuit
Surging protection circuit.
The embodiments of the invention provide a kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit, the PFC
The input of circuit is connected with live wire L, and the surging protection circuit also includes gas-discharge tube and piezo-resistance, wherein：It is described
Piezo-resistance is connected in parallel between the input and zero line of pfc circuit and live wire the L connections；One end of the gas-discharge tube with
The zero line connection, other end connection ground wire.Due to being parallel with piezo-resistance between live wire L and zero line in the embodiment of the present invention
RV, the differential mode surge between thermoelectricity and zero line can be absorbed；And the common mode surge between live wire L and ground wire can pass through pressure-sensitive electricity
Hinder RV and gas-discharge tube absorbs；Common mode surge between zero line and ground wire can be absorbed by gas-discharge tube, so as to realize
Reduce piezo-resistance while carrying out surge protection, therefore the layout of surging protection circuit can be simplified, and reduce its volume.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the schematic diagram of the surging protection circuit of Single-phase PFC circuit of the prior art；
Fig. 2 is the schematic diagram of the surging protection circuit for the Single-phase PFC circuit that the embodiment of the present invention 1 provides；
Fig. 3 is the schematic diagram of the surging protection circuit for the Single-phase PFC circuit that the embodiment of the present invention 2 provides；
Fig. 4 is the surging protection circuit schematic diagram for another Single-phase PFC circuit that the embodiment of the present invention 2 provides；
Fig. 5 is the schematic diagram of the surging protection circuit for the Single-phase PFC circuit that the embodiment of the present invention 3 provides；
Fig. 6 is the surging protection circuit schematic diagram for another Single-phase PFC circuit that the embodiment of the present invention 3 provides；
Fig. 7 is the surging protection circuit schematic diagram for another Single-phase PFC circuit that the embodiment of the present invention 3 provides.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with accompanying drawing into
One step it is described in detail, it is clear that the described embodiment only a part of embodiment of the present invention, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
Embodiment 1：
Fig. 2 is the surging protection circuit attachment structure schematic diagram of Single-phase PFC circuit provided in an embodiment of the present invention, described
The input of pfc circuit is connected with live wire L, in addition to gas-discharge tube G and piezo-resistance RV, wherein：
The piezo-resistance RV is connected in parallel between the input and zero line of pfc circuit and live wire the L connections；
One end of the gas-discharge tube is connected with the zero line, other end connection ground wire.
To ensure that surging protection circuit can be effectively protected pfc circuit, and the component of pfc circuit is not influenceed
Normal work, piezo-resistance RV conducting voltage should be less than the maximum voltage that component to be protected can be born and be more than
Operating voltage when the component normal work protected.
When not occurring surge excitation, piezo-resistance RV is in high-impedance state, does not influence the normal work of component of pfc circuit
Make.
When there is surge excitation, in the surging protection circuit of Single-phase PFC circuit provided in an embodiment of the present invention, pressure-sensitive electricity
RV conductings are hindered, constitute an absorbing path of surge energy.Pass through pressure-sensitive electricity for the surge energy between live wire L and zero line
RV is hindered to absorb；Surge energy between live wire L and ground wire is absorbed by piezo-resistance RV and gas-discharge tube G；Zero line and ground wire
Between surge energy absorbed by gas-discharge tube G.
After surge, which encourages, to disappear, piezo-resistance RV recovers to high-impedance state automatically.
Due to being parallel with piezo-resistance RV in the embodiment of the present invention between live wire L and zero line, thermoelectricity and zero line can be absorbed
Between differential mode surge；And the common mode surge between live wire L and ground wire can be absorbed by piezo-resistance RV and gas-discharge tube；
Common mode surge between zero line and ground wire can be absorbed by gas-discharge tube, so as to reduce pressure while carrying out surge protection is realized
Quick resistance, therefore the layout of surging protection circuit can be simplified, and reduce its volume, and effectively reduce cost.
Embodiment 2：
On the basis of the above embodiment of the present invention, in order to prevent overcurrent and short-circuit fire, while piezo-resistance is prevented
RV is damaged, and can also increase protective tube in surging protection circuit, and Fig. 3 is Single-phase PFC circuit provided in an embodiment of the present invention
The schematic diagram of surging protection circuit, the surging protection circuit of the Single-phase PFC also include：Main road protective tube F；
The main road protective tube F connects with the piezo-resistance RV, the main road protective tube F not with the piezo-resistance RV
One end of connection is connected with live wire L, input that the pfc circuit is connected with live wire L connect the main road protective tube F with it is described
Piezo-resistance RV concatenation point.
When there is surge excitation in the circuit, it is possible to because electric current it is excessive cause in circuit occur short circuit and it is on fire or
Person causes piezo-resistance RV to damage.In the embodiment of the present invention, the main road protective tube F connects with the piezo-resistance RV, described
Main road protective tube F is not connected with piezo-resistance RV one end being connected with live wire L, now, when electric current increases in the circuit
When to a certain extent, main road protective tube F itself the fusing cut-out electric current, avoid the circuit causes electricity because electric current is excessive
There is short circuit and situation that is on fire or causing piezo-resistance RV to damage in road.
When live wire L does not have have main road protective tube on main road protective tube, or live wire L, but main road protective tube positional distance pressure
Quick resistance RV farther out when, in order to further protect piezo-resistance, on the basis of the various embodiments described above, the circuit also includes：Protect
Dangerous pipe F；As shown in Figure 4：
The protective tube F connects with the piezo-resistance RV, the protective tube F be not connected with the piezo-resistance RV one
Hold and connected with the input that the pfc circuit is connected with live wire L.
When there is surge excitation in the circuit, it is possible to cause piezo-resistance RV to damage because electric current is excessive.Circuit bag
Include：Protective tube F, the protective tube F are connected with the piezo-resistance RV, and the protective tube F is not connected with the piezo-resistance RV
The input that is connected with live wire L of one end and the pfc circuit connect, now, when electric current increases to certain journey in the circuit
When spending, the insurance F manages itself fusing cut-out electric current, and avoid the circuit causes piezo-resistance RV to damage because electric current is excessive
Situation.
In the present embodiment, surging protection circuit can also include the main road protective tube and protective tube simultaneously, so as to enter
One step prevents overcurrent and short-circuit fire, while further prevents piezo-resistance from damaging.
Embodiment 3：
On the basis of the various embodiments described above, the pfc circuit includes：
Rectification circuit, the first booster circuit, the second booster circuit, the first electric capacity C1 and the second electric capacity C2；
The input of the rectification circuit is connected with live wire L, an output end of the rectification circuit and the first boosting electricity
Road is connected, and another output end is connected with the second booster circuit；
An output end of one output end of first booster circuit as the pfc circuit, first boosting
Another output end of circuit connects an output end of second booster circuit, another output end of second booster circuit
Another output end as the pfc circuit；
The tie point of first booster circuit and the second booster circuit connection is connected with the zero line；
The first electric capacity C1 is connected between two output ends of first booster circuit；
The second electric capacity C2 is connected between two output ends of second booster circuit.
The rectification circuit includes：First diode D1 and the second diode D2；
An output end of the negative electrode of the first diode D1 as the rectification circuit, the first diode D1's
Anode is connected with the negative electrode of the second diode D2, and the anode of the second diode D2 is as the rectification circuit
Another output end, one end that the piezo-resistance RV is not connected with zero line are connected to the first diode D1 and described second
On the tie point of diode D2 connections.
First booster circuit includes：First inductance L1, the 3rd diode D3 and first switch pipe Q1；
One end of the first inductance L1 is connected with an output end of the rectification circuit, other end connection the described 3rd
Diode D3 anode, the output end of the negative electrode of the 3rd diode D3 as first booster circuit；
The tie point connection that one end of the first switch pipe Q1 is connected with the first inductance L1 and the 3rd diode D3,
Another output end of the other end as first booster circuit.
Second booster circuit includes：Second inductance L2, the 4th diode D4 and second switch pipe Q2；
One end of the second inductance L2 is connected with an output end of the rectification circuit, other end connection the described 4th
Diode D4 negative electrode, the output end of the anode of the 4th diode D4 as second booster circuit；
The tie point connection that one end of the second switch pipe Q2 is connected with the second inductance L2 and the 4th diode D4,
Another output end of the other end as second booster circuit.
The second switch pipe Q2 includes the switching tube of inverse parallel body diode, and the first switch pipe Q1 includes inverse parallel
The switching tube of diode.
Surge can effectively be absorbed by piezo-resistance and gas-discharge tube, but may can also have aftercurrent, when
When aftercurrent is excessive, component damage in pfc circuit may be made, in order to be further ensured that the peace of component in pfc circuit
Quan Xing, as shown in figure 5, the circuit also includes：
5th diode D5 and the 6th diode D6；
The anode of the 5th diode D5 is connected with an output end of the rectification circuit, the 5th diode D5
Negative electrode connect an output end of the pfc circuit；
The negative electrode of the 6th diode D6 is connected with another output end of the rectification circuit, the 6th diode D6
Anode connect another output end of the pfc circuit.
When there is positive differential mode surge between live wire L and zero line, most of surge energy is absorbed by piezo-resistance RV, residual
Aftercurrent can then flow through the first diode D1, the 5th diode D5 and the first electric capacity C1, be absorbed by the first electric capacity C1, such first
The 3rd diode D3, first switch pipe Q1 in booster circuit, the 4th diode D3, second switch pipe in the second booster circuit
Q1 would not flow through surge current, so as to protect the component in the pfc circuit.
When occurring negative sense differential mode surge between live wire L and zero line, most of surge energy is absorbed by piezo-resistance RV, residual
Aftercurrent can then flow through the second electric capacity C2, the 6th diode D6 and the second diode D2, be absorbed by the second electric capacity C2, such second
The 4th diode D4, second switch pipe Q2 in booster circuit, the 3rd diode D3, first switch pipe in the first booster circuit
Q1 would not flow through surge current, so as to protect the component in the pfc circuit.
Protective tube can also be increased in the branch road of piezo-resistance and live wire serial connection in certain Fig. 5, this circuit structure diagram is just
No longer this is described, it is believed that those skilled in the art can determine the circuit connection structure according to the description of the various embodiments described above.
Or when the circuit includes：When the 5th diode and six diodes, the 5th diode and the six or two
The annexation of pole pipe can also be as shown in Figure 6：
The anode of the 5th diode D5 connects with the input that the pfc circuit is connected with live wire L, and the described 5th 2
Pole pipe D5 negative electrode connects an output end of the pfc circuit；
The negative electrode of the 6th diode D6 connects with the input that the pfc circuit is connected with live wire L, and the described 6th 2
Pole pipe D6 anode connects another output end of the pfc circuit.
When there is positive differential mode surge between live wire L and zero line, most of surge energy is absorbed by piezo-resistance RV, residual
Aftercurrent can then flow through the 5th diode D5 and the first electric capacity C1, be absorbed by the first electric capacity C1, in such first booster circuit
3rd diode D3, first switch pipe Q1, the 4th diode D3, second switch pipe Q1 in the second booster circuit would not flow through
Surge current, so as to protect the component in the pfc circuit.Meanwhile first diode D1 and the second diode D2 will not also flow
Surge current is crossed, therefore also protects the first diode D 1 and the second diode D2.
When occurring negative sense differential mode surge between live wire L and zero line, most of surge energy is absorbed by piezo-resistance RV, residual
Aftercurrent can then flow through the second electric capacity C2 and the 6th diode D6, be absorbed by the second electric capacity C2, in such second booster circuit
4th diode D4, second switch pipe Q2, the 3rd diode D3, first switch pipe Q1 in the first booster circuit would not flow through
Surge current, so as to protect the component in the pfc circuit.Meanwhile second diode D2 and the first diode D1 will not also flow
Surge current is crossed, therefore protects the second diode D2 and the first diode D1.
Or protective tube F can also be arranged in the branch road of piezo-resistance and live wire serial connection, as shown in fig. 7, as live wire L and
When occurring positive differential mode surge between zero line, most of surge energy is absorbed by piezo-resistance RV, and aftercurrent can then flow through
Five diode D5 and the first electric capacity C1, absorbed by the first electric capacity C1, the 3rd diode D3 in such first booster circuit, first
Switching tube Q1, the 4th diode D3, second switch pipe Q1 in the second booster circuit would not flow through surge current, so as to protect
Component in the pfc circuit.Meanwhile first diode D1 and the second diode D2 do not flow through surge current yet, therefore
Protect the first diode D1 and the second diode D2.
When occurring negative sense differential mode surge between live wire L and zero line, most of surge energy is absorbed by piezo-resistance RV, residual
Aftercurrent can then flow through the second electric capacity C2 and the 6th diode D6, be absorbed by the second electric capacity C2, in such second booster circuit
4th diode D4, second switch pipe Q2, the 3rd diode D3, first switch pipe Q1 in the first booster circuit would not flow through
Surge current, so as to protect the component in the pfc circuit.Meanwhile second diode D2 and the first diode D1 will not also flow
Surge current is crossed, therefore protects the second diode D2 and the first diode D1.
Embodiment 4：
The embodiments of the invention provide a kind of power electronic equipment, including the single-phase power factor school in the various embodiments described above
The surging protection circuit of positive pfc circuit.
The embodiments of the invention provide a kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit, the PFC
The input of circuit is connected with live wire L, in addition to gas-discharge tube and piezo-resistance, wherein：The piezo-resistance is connected in parallel on institute
State between pfc circuit and the input and zero line of live wire L connections；One end of the gas-discharge tube is connected with the zero line, separately
One end connects ground wire.Differential mode surge between live wire L and zero line is absorbed by piezo-resistance RV；Common mode between live wire L and ground wire
Surge is absorbed by piezo-resistance RV and gas-discharge tube；Common mode surge between zero line and ground wire is absorbed by gas-discharge tube.Cause
This, the surging protection circuit of Single-phase PFC circuit provided in an embodiment of the present invention can pass through a piezo-resistance and gas discharge
Pipe absorbs to surge energy, realizes the carrying out surge protection to pfc circuit so that the PCB in the surging protection circuit of Single-phase PFC
Layout is simple, small volume, and cost is low.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of surging protection circuit of single-phase power factor correcting pfc circuit, input and the live wire L of the pfc circuit connect
Connect, it is characterised in that also including gas-discharge tube and piezo-resistance, wherein：
The piezo-resistance is connected in parallel between the input and zero line of pfc circuit and live wire the L connections；
One end of the gas-discharge tube is connected with the zero line, other end connection ground wire.
2. the surging protection circuit of Single-phase PFC circuit as claimed in claim 1, it is characterised in that the circuit also includes：It is main
Road protective tube；
The main road protective tube is connected with the piezo-resistance, one end that the main road protective tube is not connected with the piezo-resistance
It is connected with the live wire L, the input that the pfc circuit is connected with live wire L connects the main road protective tube and the pressure-sensitive electricity
The concatenation point of resistance.
3. the surging protection circuit of Single-phase PFC circuit as claimed in claim 1 or 2, it is characterised in that the circuit also wraps
Include：Protective tube；
The protective tube is connected with the piezo-resistance, the protective tube not with one end that the piezo-resistance is connected with it is described
The input connection that pfc circuit is connected with live wire L.
4. the surging protection circuit of Single-phase PFC circuit as claimed in claim 3, it is characterised in that the pfc circuit includes：
Rectification circuit, the first booster circuit, the second booster circuit, the first electric capacity and the second electric capacity；
The input of the rectification circuit is connected with live wire L, and an output end and the first booster circuit of the rectification circuit connect
Connect, another output end is connected with the second booster circuit；
An output end of one output end of first booster circuit as the pfc circuit, first booster circuit
Another output end connect an output end of second booster circuit, another output end conduct of second booster circuit
Another output end of the pfc circuit；
The tie point of first booster circuit and the second booster circuit connection is connected with the zero line；
First electric capacity is connected between two output ends of first booster circuit；
Second electric capacity is connected between two output ends of second booster circuit.
5. the surging protection circuit of Single-phase PFC circuit as claimed in claim 4, it is characterised in that the pfc circuit also wraps
Include：5th diode and the 6th diode；
The anode of 5th diode is connected with an output end of the rectification circuit, and the negative electrode of the 5th diode connects
Connect an output end of the pfc circuit；
The negative electrode of 6th diode is connected with another output end of the rectification circuit, and the anode of the 6th diode connects
Connect another output end of the pfc circuit.
6. the surging protection circuit of Single-phase PFC circuit as claimed in claim 4, it is characterised in that the pfc circuit also wraps
Include：5th diode and the 6th diode；
The anode of 5th diode connects with the input that the pfc circuit is connected with live wire L, the 5th diode
Negative electrode connects an output end of the pfc circuit；
The negative electrode of 6th diode connects with the input that the pfc circuit is connected with live wire L, the 6th diode
Anode connects another output end of the pfc circuit.
7. the surging protection circuit of Single-phase PFC circuit as claimed in claim 4, it is characterised in that first booster circuit
Including：First inductance, the 3rd diode and first switch pipe；
One end of first inductance is connected with an output end of the rectification circuit, and the other end connects the 3rd diode
Anode, the output end of the negative electrode of the 3rd diode as first booster circuit；
The tie point connection that one end of the first switch pipe is connected with first inductance and the 3rd diode, other end conduct
Another output end of first booster circuit.
8. the surging protection circuit of Single-phase PFC circuit as claimed in claim 4, it is characterised in that second booster circuit
Including：Second inductance, the 4th diode and second switch pipe；
One end of second inductance is connected with an output end of the rectification circuit, and the other end connects the 4th diode
Negative electrode, the output end of the anode of the 4th diode as second booster circuit；
The tie point connection that one end of the second switch pipe is connected with second inductance and the 4th diode, other end conduct
Another output end of second booster circuit.
9. the surging protection circuit of Single-phase PFC circuit as claimed in claim 7 or 8, it is characterised in that the second switch pipe
Include the switching tube of inverse parallel body diode, the first switch pipe includes the switching tube of anti-paralleled diode.
10. a kind of power electronic equipment, it is characterised in that including the single-phase power factor as described in claim any one of 1-9
Correct the surging protection circuit of pfc circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871314.8A CN107887898A (en) | 2016-09-29 | 2016-09-29 | A kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610871314.8A CN107887898A (en) | 2016-09-29 | 2016-09-29 | A kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit |
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| Publication Number | Publication Date |
|---|---|
| CN107887898A true CN107887898A (en) | 2018-04-06 |
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ID=61769084
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610871314.8A Pending CN107887898A (en) | 2016-09-29 | 2016-09-29 | A kind of surging protection circuit and power electronic equipment of Single-phase PFC circuit |
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| CN (1) | CN107887898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112019039A (en) * | 2020-08-28 | 2020-12-01 | 广州广电计量检测股份有限公司 | Power interface circuit with high-grade surge protection and high EMI performance |
| US11223275B2 (en) | 2018-04-10 | 2022-01-11 | Shanghai Tuituo Technology Co., Ltd | Switching mode power supply circuit |
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| US11223275B2 (en) | 2018-04-10 | 2022-01-11 | Shanghai Tuituo Technology Co., Ltd | Switching mode power supply circuit |
| CN112019039A (en) * | 2020-08-28 | 2020-12-01 | 广州广电计量检测股份有限公司 | Power interface circuit with high-grade surge protection and high EMI performance |
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