CN206628990U - PFC PFC rectification circuits, electromagnetic heating system and electromagnetic oven - Google Patents
PFC PFC rectification circuits, electromagnetic heating system and electromagnetic oven Download PDFInfo
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- CN206628990U CN206628990U CN201720332868.0U CN201720332868U CN206628990U CN 206628990 U CN206628990 U CN 206628990U CN 201720332868 U CN201720332868 U CN 201720332868U CN 206628990 U CN206628990 U CN 206628990U
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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
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Abstract
The utility model embodiment provides a kind of PFC rectification circuits, electromagnetic heating system and electromagnetic oven, belongs to field of circuit technology.Wherein the PFC rectification circuits include：First inductance one end is connected to the live wire of AC power, the other end is connected to the positive pole of the first commutation diode, the positive pole of first commutation diode is connected to the negative pole of the second commutation diode, the both ends of first switch pipe are connected in parallel to the both ends of the first commutation diode, and second switch pipe is connected in parallel on the both ends of the second rectifying tube；The positive pole of 3rd commutation diode is connected to the negative pole of the 4th commutation diode and the zero line of AC power, and the negative pole of the 3rd commutation diode is connected to the negative pole of the first commutation diode, and the positive pole of the 4th commutation diode is connected to the positive pole of the second commutation diode；And first the first end of electric capacity be connected to the negative pole of the 3rd commutation diode, the second end of the first electric capacity is connected to the positive pole of the 4th commutation diode.Thereby, it is possible to effectively solve electromagnetic interference problem of the circuit in switching process.
Description
Technical field
Rectification circuit is the utility model is related to, in particular it relates to a kind of PFC PFC (power factor
Correction) rectification circuit, electromagnetic heating system and electromagnetic oven.
Background technology
Rectifying device is one of essential important component of the direct-flow electricity utilization apparatus of electricity network to be accessed, at present market
On frequently with rectifying device be the rectifier bridge (as shown in Figure 1) that is constituted by a diode, but should be made up of diode D whole
Stream bridge has many defects：
First, diode has larger pressure drop difference, cause diode autophage power larger, influence the same of efficiency
When the problem of also causing easily to generate heat；
Second, the backward voltage of diode is smaller, breakdown, poor reliability is easier to；
Third, rectifier bridge in the rectification course of work, can produce the harmonic wave close with fundamental wave frequency range, the harmonic wave is caused to be difficult to
Filter out, and fundamental wave harmonic collective effect can also be caused and send drone noise, had a strong impact on the use for including rectifier bridge
The Consumer's Experience of electric equipment；
Fourth, the power factor for causing AC power using the rectifier bridge being made up of diode reduces.
Thus, a small power consumption, it is highly reliable and can solve harmonic wave, fundamental wave collective effect and produce drone noise problem
New no bridge rectification circuit is the popular research direction of current industry.
Found it should be noted that above technical problem is the present inventor during the utility model is put into practice.
Utility model content
The purpose of the utility model one side is to provide a kind of small power consumption, highly reliable and can effectively solve harmonic wave, fundamental wave
Collective effect and the PFC rectification circuits for producing drone noise problem；The purpose of the utility model another aspect is to provide a kind of bag
Electromagnetic heating system containing above-mentioned PFC rectification circuits；The purpose of the another aspect of the utility model is to provide one kind and includes above-mentioned electricity
The electromagnetic oven of magnetic heating system, at least to solve the technical problem illustrated in background technology.
To achieve these goals, the utility model embodiment provides a kind of PFC rectification circuits, including：
First inductance, first switch pipe, second switch pipe, the first commutation diode, the second commutation diode, the 3rd rectification
Diode and the 4th commutation diode, the first electric capacity；
Above-mentioned first inductance one end is connected to the live wire of AC power, and the other end is connected to above-mentioned first commutation diode
Positive pole.The positive pole of above-mentioned first commutation diode is additionally coupled to the negative pole of above-mentioned second commutation diode, above-mentioned first switch pipe
Both ends be connected in parallel to the both ends of above-mentioned first commutation diode, above-mentioned second switch pipe is connected in parallel on the two of above-mentioned second rectifying tube
End；
The positive pole of above-mentioned 3rd commutation diode be connected to above-mentioned 4th commutation diode negative pole and AC power zero
Line, the negative pole of above-mentioned 3rd commutation diode are connected to the negative pole of above-mentioned first commutation diode, above-mentioned 4th commutation diode
Positive pole be connected to the positive pole of above-mentioned second commutation diode；And
The first end of above-mentioned first electric capacity is connected to the negative pole of above-mentioned 3rd commutation diode, and the second of above-mentioned first electric capacity
End is connected to the positive pole of above-mentioned 4th commutation diode.
Preferably, above-mentioned first switch pipe and above-mentioned second switch pipe include IGBT pipes and/or metal-oxide-semiconductor.
Preferably, above-mentioned first commutation diode and above-mentioned second commutation diode are high-frequency rectification diode, Yi Jishang
It is low frequency commutation diode to state the 3rd commutation diode and above-mentioned 4th commutation diode.
Preferably, when above-mentioned first switch pipe and above-mentioned second switch pipe are IGBT pipes, the E poles of above-mentioned first switch pipe
The positive pole of above-mentioned first commutation diode is connected to, and the E poles of above-mentioned second switch pipe are connected to the above-mentioned pole of second rectification two
The positive pole of pipe.
Preferably, when above-mentioned first switch pipe and above-mentioned second switch pipe are metal-oxide-semiconductor, the S poles of above-mentioned first switch pipe
The positive pole of above-mentioned first commutation diode is connected to, and the S poles of above-mentioned second switch pipe are connected to the above-mentioned pole of second rectification two
The positive pole of pipe.
Preferably, the G poles of above-mentioned first switch pipe and above-mentioned second switch pipe are connected to logic controller.
Preferably, the capacitance size of above-mentioned first electric capacity is 100uF~1000uF.
Preferably, above-mentioned first inductance includes magnetic core, and the material of the magnetic core of above-mentioned first inductance is selected from following at least one
Kind：Ferrite, iron silicon, iron sial.
On the other hand the utility model embodiment provides a kind of electromagnetic heating system, it is characterised in that：
PFC rectification circuits described above；
Electromagnetic heating circuit；
The logic controller being connected respectively with above-mentioned PFC rectification circuits and above-mentioned electromagnetic heating circuit；
The ac supply signal that wherein above-mentioned PFC rectification circuits are connected, which includes, is exchanging positive first half cycle signal, exchange just
Later half periodic signal, the negative first half cycle signal of exchange with exchange negative later half periodic signal distinguish corresponding to first mode, second
Mode, the 3rd mode and the 4th mode；And
Above-mentioned logic controller be used for control above-mentioned first switch pipe to be turned under above-mentioned first mode and the 4th mode,
End under above-mentioned second mode and the 3rd mode, and the above-mentioned second switch pipe of control is cut under above-mentioned first mode and the 4th mode
Only, turned under above-mentioned second mode and the 3rd mode.
The another aspect of the utility model embodiment provides a kind of electromagnetic oven, includes electromagnetic heating system described above.
Pass through above-mentioned technical proposal, PFC boost circuit and bridge rectifier pipe are combined together, inputted exchange realizing
While being converted to direct current output, additionally it is possible to possess the advantages of PFC boost circuit, and can effectively solve the problem that rectification in the prior art
Bridge work time-harmonic wave, fundamental wave collective effect and produce drone noise jamming problem, and can also be based on switching tube realize it is whole
That flows is controllable so that the rectification circuit that the utility model embodiment is provided has low-power consumption and highly reliable beneficial effect.
The further feature and advantage of the utility model embodiment will give specifically in subsequent specific embodiment part
It is bright.
Brief description of the drawings
Accompanying drawing is that the utility model embodiment is further understood for providing, and a part for constitution instruction,
With being used to explain the utility model embodiment together with following embodiment, but do not form to the utility model embodiment
Limitation.In the accompanying drawings：
Fig. 1 is illustrated that the structural representation for the rectifier bridge being made up of in the prior art diode；
Fig. 2 is illustrated that the structural representation of the PFC rectification circuits of the embodiment of the utility model one；
Fig. 3 A are illustrated that exchange positive first half cycle letter of the PFC rectification circuits shown in Fig. 2 in alternating current input power supplying signal
Current direction ring schematic diagram under number；
Fig. 3 B are illustrated that exchange just later half cycle letter of the PFC rectification circuits shown in Fig. 2 in alternating current input power supplying signal
Current direction ring schematic diagram under number；
Fig. 3 C are illustrated that the PFC rectification circuits shown in Fig. 2 bear first half cycle letter in the exchange of alternating current input power supplying signal
Current direction ring schematic diagram under number；
Fig. 3 D are illustrated that the PFC rectification circuits shown in Fig. 2 bear later half cycle letter in the exchange of alternating current input power supplying signal
Current direction ring schematic diagram under number；
What Fig. 4 was illustrated that the embodiment of the utility model one includes the electromagnetic heating system of PFC rectification circuits shown in Fig. 2
Structural representation.
Description of reference numerals
ACN AC power zero line ACL AC power live wires
30 electromagnetic heating system C1, C2 electric capacity
L1 inductance Q1, Q2 switching tubes
The electromagnetic heating circuit of 10 PFC rectification circuits 20
D, D1-D4 commutation diodes
Embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein
Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.
Those skilled in the art of the present technique are appreciated that the wording " comprising " used in specification of the present utility model refers to deposit
In features described above, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition it is one or more other
Feature, integer, step, operation, element, component and/or combinations thereof.It should be understood that when we claim element be " connected " or
During " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be intermediary element.This
Outside, " connection " or " coupling " used herein can include wireless connection or wireless coupling.Wording "and/or" bag used herein
Include whole or any cell and all combinations of one or more associated list items.
The structural representation of the PFC rectification circuits of the embodiment of the utility model one is illustrated that referring to Fig. 2, the PFC rectifications
Circuit 10 specifically includes inductance L1, switching tube Q1, switching tube Q2, commutation diode D1-D4, electric capacity C1, as shown in Fig. 2 electric
Sense L1 one end is connected to the live wire ACL of AC power, and the other end is connected to commutation diode D1 positive pole.Commutation diode
D1 positive pole is additionally coupled to the negative pole of the commutation diode D2, and switching tube Q1 both ends are connected in parallel to the commutation diode D1
Both ends, switching tube Q2 is connected in parallel on rectifying tube D2 both ends；Commutation diode D3 positive pole is connected to the negative of commutation diode D4
Pole and the zero line ACN of AC power, commutation diode D3 negative pole are connected to commutation diode D1 negative pole, commutation diode D4
Positive pole be connected to commutation diode D2 positive pole；And electric capacity C1 first end connection commutation diode D3 negative pole, first
Electric capacity C1 the second end is connected to commutation diode D4 positive pole.And it is adapted to load at electric capacity C1 both ends.More specifically
Ground, in some optional embodiments of the utility model embodiment, switching tube Q1 and Q2 can be IGBT (Insulated
Gate Bipolar Transistor) pipe, i.e. insulated gate bipolar transistor, now switching tube Q1 and Q2, which possesses, G, C, E
Three poles, understand that switching tube Q2 is connected in parallel on commutation diode D2 both ends, and Q2 E poles are connected to commutation diode D2 with reference to Fig. 2
Positive pole, and switching tube Q1 is connected in parallel on diode D1 both ends, and switching tube Q1 E poles are being connected to commutation diode D1 just
Pole.In addition, in other optional embodiments of the present utility model, switching tube Q1 and Q2 can be metal-oxide-semiconductor, i.e. field-effect
Pipe, now switching tube Q1 and Q2, which possesses, the pole of G, D, S tri-, understands that switching tube Q2 is connected in parallel on commutation diode D2 with reference to Fig. 2
Both ends, and Q2 S poles are connected to commutation diode D2 positive pole, and switching tube Q1 is connected in parallel on diode D1 both ends, opens
The S poles for closing pipe Q1 are connected to commutation diode D1 positive pole.It is understood that high-frequency diode and low frequency in the present embodiment
Diode should be for those of ordinary skills it is clear, high-frequency diode and low frequency diode refer to respectively in
Different certain types of diodes, relatively simple method be, can be to determine two by being checked to the outward appearance model of diode
Pole pipe is high-frequency diode or low frequency diode, is identified because containing F in the model of general diode.On the present embodiment, more
Specifically, electric capacity C1 capacitance size is 100uF~1000uF, rated voltage 500V；Inductance L1, L2 include magnetic core, system
The material for making the magnetic core is selected from following at least one：Ferrite, iron silicon, iron sial, thus type selecting be able to ensure inductance L1 and
L2 energy-storage property.Further, due to employ in the present embodiment pipe pressure difference far below commutation diode rectification MOS or
IGBT, it can effectively reduce the power consumption of PFC rectification circuits.
In order that technological thought of the present utility model be more convenient for those of ordinary skill in the art understanding, below continuing with
Fig. 3 A-3D disclose the operation principle of the PFC rectification circuits shown in Fig. 2：Wherein Fig. 3 A are illustrated that when ac input voltage signal is
Sinusoidal waveform, and the current direction ring under first mode when being in positive half cycle,
Mode as shown in Figure 3A, open Q1 and end Q2 so that the pole of rectification two can be ended by flowing through inductance L1 electric current
Pipe D3 and conducting commutation diode D4, and form conducting loop with commutation diode D1 and think load supplying, and inductance L1
Energy storage is reduced.Mode as shown in Figure 3 B, open Q2 and end Q1 so that Q1 diode D1 cut-offs, and inductance L1 energy storage
Increase.Thus, in the mode shown in Fig. 3 A and 3B, in the positive half period of ac input signal, switching tube Q2 and the pole of rectification two
Pipe D1 forms PFC boost circuit structure, and is acted on again via electric capacity C1 filtering energy storage, to export the dc source of certain ripple
Signal, used for connecting load afterwards.
Mode as shown in Figure 3 C, open Q2 and end Q1 so that the pole of rectification two can be turned on by flowing through inductance L1 electric current
Pipe D3, and cut-off commutation diode D4, and think load supplying with switching tube Q2 diode D1 composition conductings loop, and it is electric
The energy storage for feeling L1 is reduced.Mode as shown in Figure 3 B, when opening Q1, commutation diode D2 cut-offs, inductive energy storage increase.Then open
Close pipe Q1 and commutation diode D2 and form PFC boost circuit structure, and acted on again via electric capacity C1 filtering energy storage, to export one
Determine the DC power signal of ripple, used for the load connected afterwards.
In the one side of the application of above-mentioned PFC rectification circuits 10, Electromagnetic Heating can be illustrated that with continued reference to Fig. 4, Fig. 4
System 30, specifically comprising PFC rectification circuits 10, the load electromagnetic heating circuit 20 for Electromagnetic Heating, and connect and modulate
Control the logic controller of the PFC rectification circuits 10 and the electromagnetic heating circuit 20；More specifically, in PFC rectification circuits 10
Switching tube Q1-Q4 G poles are connected to logic controller, are achieved in by logic controller controlling switch pipe Q1-Q4；It is excellent
Selection of land, the G poles of the electronic component IGBT in electromagnetic heating circuit 20 are also connected to logic controller, are achieved in being based on one
Logic controller is completed to rectification circuit and the double control of load circuit；Also, because PFC rectification circuits 10 employ PFC
Rectification circuit of the circuit as system so that the effect of regulation power coefficient is also taken into account while rectification function is realized.More
Preferably, the logic controller can also export to PFC, civil power AC input and electromagnetic heating circuit carry out data sampling, with
It is more convenient that the control to electromagnetic heating circuit 20 and rectification circuit 10 is intuitively completed by logic controller.Further,
A kind of dc source can also be regarded as on the rectification circuit 10 in the electromagnetic heating system 30, because it also has rectification work(
Can, the exchange input of circuit can be converted to direct current output.
In the one side of the application of above-mentioned electromagnetic heating system 30, the electromagnetic heating system can be by comprising applied to household electrical appliances
In product, more specifically, the electromagnetic heating system 30 can showed by comprising applied in electromagnetic oven thus, it is possible to effectively eliminate
Some electromagnetic ovens caused drone noise, and improve Consumer's Experience in the course of the work.
Preferred embodiment of the present utility model, still, the utility model and unlimited is described in detail above in association with accompanying drawing
Detail in above-mentioned embodiment, can be to skill of the present utility model in range of the technology design of the present utility model
Art scheme carries out a variety of simple variants, and these simple variants belong to the scope of protection of the utility model.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means in order to avoid unnecessary repetition, the utility model is to each
The possible combination of kind no longer separately illustrates.
In addition, it can also be combined between a variety of embodiments of the present utility model, as long as it is not disobeyed
Thought of the present utility model is carried on the back, it should equally be considered as content disclosed in the utility model.
Claims (10)
- A kind of 1. PFC PFC rectification circuits, it is characterised in that including：First inductance, first switch pipe, second switch pipe, the first commutation diode, the second commutation diode, the pole of the 3rd rectification two Pipe and the 4th commutation diode, the first electric capacity；Described first inductance one end is connected to the live wire of AC power, and the other end is being connected to first commutation diode just Pole, the positive pole of first commutation diode are additionally coupled to the negative pole of second commutation diode, the first switch pipe Both ends are connected in parallel to the both ends of first commutation diode, and the second switch pipe is connected in parallel on the both ends of second rectifying tube；The positive pole of 3rd commutation diode is connected to the negative pole of the 4th commutation diode and the zero line of AC power, institute The negative pole for stating the 3rd commutation diode is connected to the negative pole of first commutation diode, the positive pole of the 4th commutation diode It is connected to the positive pole of second commutation diode；AndThe first end of first electric capacity is connected to the negative pole of the 3rd commutation diode, and the second end of first electric capacity connects It is connected to the positive pole of the 4th commutation diode.
- 2. circuit according to claim 1, it is characterised in that：The first switch pipe and the second switch pipe include IGBT pipes and/or metal-oxide-semiconductor.
- 3. circuit according to claim 1, it is characterised in that：First commutation diode and second commutation diode are high-frequency rectification diode, and the 3rd rectification two Pole pipe and the 4th commutation diode are low frequency commutation diode.
- 4. circuit according to claim 2, it is characterised in that：When the first switch pipe and the second switch pipe are IGBT pipes, the E poles of the first switch pipe are connected to described The positive pole of first commutation diode, and the E poles of the second switch pipe are connected to the positive pole of second commutation diode.
- 5. circuit according to claim 2, it is characterised in that：When the first switch pipe and the second switch pipe are metal-oxide-semiconductor, the S poles of the first switch pipe are connected to described The positive pole of one commutation diode, and the S poles of the second switch pipe are connected to the positive pole of second commutation diode.
- 6. circuit according to claim 2, it is characterised in thatThe G poles of the first switch pipe and the second switch pipe are connected to logic controller.
- 7. circuit according to claim 1, it is characterised in that：The capacitance size of first electric capacity is the μ F of 100 μ F~1000.
- 8. circuit according to claim 1, first inductance includes magnetic core, it is characterised in that：The material of the magnetic core of first inductance is selected from following at least one：Ferrite, iron silicon, iron sial.
- A kind of 9. electromagnetic heating system, it is characterised in that：Include the PFC PFC rectification circuits described in claim any one of 1-8；Electromagnetic heating circuit；The logic controller being connected respectively with the PFC rectification circuits and the electromagnetic heating circuit；The ac supply signal that wherein described PFC rectification circuits are connected is just later half comprising the positive first half cycle signal of exchange, exchange Periodic signal, the negative first half cycle signal of exchange with exchange negative later half periodic signal distinguish corresponding to first mode, second mode, 3rd mode and the 4th mode；AndThe logic controller is used to control the first switch pipe to turn under the first mode and the 4th mode, described End under second mode and the 3rd mode, and control the second switch pipe to end under the first mode and the 4th mode, Turned under the second mode and the 3rd mode.
- 10. a kind of electromagnetic oven, it is characterised in that include the electromagnetic heating system described in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720332868.0U CN206628990U (en) | 2017-03-31 | 2017-03-31 | PFC PFC rectification circuits, electromagnetic heating system and electromagnetic oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720332868.0U CN206628990U (en) | 2017-03-31 | 2017-03-31 | PFC PFC rectification circuits, electromagnetic heating system and electromagnetic oven |
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| Publication Number | Publication Date |
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| CN206628990U true CN206628990U (en) | 2017-11-10 |
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ID=60206106
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720332868.0U Active CN206628990U (en) | 2017-03-31 | 2017-03-31 | PFC PFC rectification circuits, electromagnetic heating system and electromagnetic oven |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417251A (en) * | 2019-07-09 | 2019-11-05 | 广东美的制冷设备有限公司 | Pfc circuit and air conditioner |
-
2017
- 2017-03-31 CN CN201720332868.0U patent/CN206628990U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417251A (en) * | 2019-07-09 | 2019-11-05 | 广东美的制冷设备有限公司 | Pfc circuit and air conditioner |
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