CN207184349U - A kind of variable frequency microwave power supply - Google Patents
A kind of variable frequency microwave power supply Download PDFInfo
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- CN207184349U CN207184349U CN201721223334.0U CN201721223334U CN207184349U CN 207184349 U CN207184349 U CN 207184349U CN 201721223334 U CN201721223334 U CN 201721223334U CN 207184349 U CN207184349 U CN 207184349U
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- circuit
- power supply
- microwave power
- signal
- variable frequency
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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 provides a kind of variable frequency microwave power supply, including：Control unit and the first current rectifying and wave filtering circuit, the first current rectifying and wave filtering circuit carry out rectifying and wave-filtering processing, and output rectification filter signal to input signal；Wherein, variable frequency microwave power supply also includes：Resonance circuit, the first drive signal of reception control unit output and the rectifying and wave-filtering signal of the first current rectifying and wave filtering circuit output, and produce alternating signal；High frequency transforming circuit, alternating signal caused by resonance circuit is received, and rectifying and wave-filtering processing is carried out to alternating signal.Demand of the variable frequency microwave power supply of the present utility model according to industrial microwave power supply to application environment, the use to electrolysis power is eliminated in the design of variable frequency microwave power supply, the drawbacks of electrochemical capacitor uses in microwave power supply is prevented, there is provided the variable frequency microwave power supply that a kind of service life is long and security performance is high.
Description
Technical field
The utility model belongs to microwave power supply technology, more particularly to a kind of variable frequency microwave power supply.
Background technology
Existing industrial microwave power supply is applied to many application environments, and industrial microwave power supply needs to steep the ability in insulating oil
More preferable radiating and dust and moisture, have all largely used electrochemical capacitor to be filtered in the design of existing industrial microwave power supply
Ripple, due to electrochemical capacitor plug with oil can chemically reactive, so electrochemical capacitor be can not long period of soaking in transformer oil,
The service life of electrochemical capacitor is short simultaneously can also have leakage or blast, and these factors all illustrate in industrial microwave power supply
It is middle many drawbacks to be present using electrochemical capacitor, life-span and security that power supply uses can be had a strong impact on.
Utility model content
Main purpose of the present utility model is the provision of a kind of without using electrochemical capacitor, increase service life and security
Variable frequency microwave power supply.
To achieve these goals, the utility model provides a kind of variable frequency microwave power supply, including：Control unit and
One current rectifying and wave filtering circuit, first current rectifying and wave filtering circuit carry out rectifying and wave-filtering processing, and output rectification filter to input signal
Signal；Wherein, the variable frequency microwave power supply also includes：Resonance circuit, receive the first drive signal of described control unit output
And the rectifying and wave-filtering signal of the first current rectifying and wave filtering circuit output, and produce alternating signal；High frequency transforming circuit, connects
The alternating signal caused by the resonance circuit is received, and rectifying and wave-filtering processing is carried out to the alternating signal.
Preferable scheme is that first current rectifying and wave filtering circuit includes full bridge rectifier and the first electric capacity, described complete
Bridge rectification circuit carries out bridge rectifier processing to the input signal；First electric capacity is non-electrolytic capacitor.
Preferable scheme is that the resonance circuit also includes drive circuit and resonance half-bridge circuit；The drive circuit
The second drive signal is exported to the resonance half-bridge circuit；The resonance half-bridge circuit includes first switch pipe and second switch
Pipe, the first switch pipe and the second switch pipe receive the driving of first drive signal and second drive signal
Turned on and/or turned off.
Preferable scheme is that the high frequency transforming circuit includes high frequency transformer and the second current rectifying and wave filtering circuit；The height
The primary side winding of frequency power transformer is connected with the output end of the resonance circuit；The vice-side winding of the high frequency transformer and described the
Two current rectifying and wave filtering circuits are connected in series.
Preferable scheme is that the resonance circuit is by driving the first switch pipe with the second switch pipe described
The alternating signal is produced in the primary side winding of high frequency transformer.
Preferable scheme is that first drive signal of described control unit output is pwm signal.
The beneficial effects of the utility model：Variable frequency microwave power supply of the present utility model is according to industrial microwave power supply to using ring
The demand in border, the use to electrolysis power is eliminated in the design of variable frequency microwave power supply, prevented electrochemical capacitor in microwave electricity
A kind of the drawbacks of being used in source, there is provided the variable frequency microwave power supply that service life is long and security performance is high.
Brief description of the drawings
Fig. 1 is the circuit module figure of the variable frequency microwave power supply of the utility model first embodiment.
Fig. 2 is the circuit module figure of the variable frequency microwave power supply of the utility model second embodiment.
Fig. 3 is the circuit diagram of the variable frequency microwave power supply of the utility model second embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
First embodiment
Fig. 1 is the circuit module figure of the variable frequency microwave power supply of the utility model first embodiment.
The variable frequency microwave power supply that the utility model first embodiment provides includes：
The current rectifying and wave filtering circuit 2 of control unit 1 and first, the first current rectifying and wave filtering circuit 2 carry out rectification filter to input signal
Ripple processing, and output rectification filter signal；Resonance circuit 3, the first drive signal and first that reception control unit 1 exports are whole
The rectifying and wave-filtering signal that filter circuit 2 exports is flowed, and produces alternating signal；High frequency transforming circuit 4, receive resonance circuit 3 and produce
Alternating signal, and to alternating signal carry out rectifying and wave-filtering processing.
In actual applications, Switching Power Supply only just needs to use electrolysis electricity in the case where needing to put down half-sinusoid filter
Holding, product requires relatively stringent to ripple, if in the case that Switching Power Supply product requires not tight because of load characteristic to ripple, can
In a manner of being combined by software and hardware, make the semiconductor switch device of the Switching Power Supply half-sinusoid behind commercial power rectification
Working frequency or dutycycle are adjusted between the lowest point and peak value to adjust the gain of resonance circuit, changes the lowest point of civil power half-sinusoid
Ratio with from peak value to Load transportation energy, the effect for reducing capacitance can be played, so as to cancel the electrolysis of Large Copacity
Electric capacity.
Second embodiment
Second embodiment is that the circuit module of variable frequency microwave power supply is carried out further on the basis of first embodiment
Explanation.
Fig. 2 is the circuit module figure of the variable frequency microwave power supply of the utility model second embodiment, and Fig. 3 is the utility model
The circuit diagram of the variable frequency microwave power supply of two embodiments.
Understand as shown in Figures 2 and 3, variable frequency microwave power supply includes：
The current rectifying and wave filtering circuit 2 of control unit 1 and first, the first current rectifying and wave filtering circuit 2 carry out rectification filter to input signal
Ripple processing, and output rectification filter signal；Resonance circuit 3, the first drive signal and first that reception control unit 1 exports are whole
The rectifying and wave-filtering signal that filter circuit 2 exports is flowed, and produces alternating signal；High frequency transforming circuit 4, receive resonance circuit 3 and produce
Alternating signal, and to alternating signal carry out rectifying and wave-filtering processing.
Preferably, the first current rectifying and wave filtering circuit 2 includes the electric capacity 22 of full bridge rectifier 21 and first, full-bridge rectification electricity
Road 21 carries out bridge rectifier processing to input signal；First electric capacity 22 is non-electrolytic capacitor.
Preferable scheme is that resonance circuit 3 also includes drive circuit 31 and resonance half-bridge circuit 32；Drive circuit 3 is defeated
Go out the second drive signal to resonance half-bridge circuit 32；Resonance half-bridge circuit 32 includes first switch pipe 33 and second switch pipe 34,
The driving that first switch pipe 33 and second switch pipe 34 receive the first drive signal and the second drive signal is turned on and/or closed
It is disconnected.
In full bridge rectifier 21, the drive signals of four switching tubes make switching tube according to a certain frequency open and
Turn off, the voltage in resonance circuit 3 will be presented with the square wave of alternation, and its alternative frequency is identical with the frequency of drive signal.
Preferably, high frequency transforming circuit 4 includes the current rectifying and wave filtering circuit 42 of high frequency transformer 41 and second；High frequency transformer
41 primary side winding is connected with the output end of resonance circuit 3；The vice-side winding of high frequency transformer 41 and the second current rectifying and wave filtering circuit
42 are connected in series.
Preferably, resonance circuit 3 is by driving first switch pipe 33 with second switch pipe 34 in high frequency transformer 41
Alternating signal is produced in primary side winding.
First switch pipe 33, the drive signal of second switch pipe 34 come from the and of control unit 1 in resonance half-bridge circuit 32
The drive circuit 31 of resonance circuit 3, control unit 1 and drive circuit 31, which provide signal, makes first switch pipe 33, second switch pipe
34 are turned on and off according to a certain frequency and dutycycle.
The operation principle of resonance circuit 3 is as follows：When first switch pipe 33 is opened, leakage of the electric current from first switch pipe 33
Pole, source electrode flow into the primary side winding L of high frequency transformer 41 and then return to negative pole from electric capacity C2；When second switch pipe 34 is opened,
The energy that high frequency transformer 41 stores is returned by what the primary side winding L, second switch pipe 34, electric capacity C2 of high frequency transformer 41 were formed
Release on road.The course of work by constantly repeating the above makes the primary side winding L of high frequency transformer 41 produce alternating current or voltage,
Load magnetron (not shown) will be delivered to after vice-side winding rectifying and wave-filtering that energy passes through high frequency transformer.
Preferably, the first drive signal that control unit 1 exports is pwm signal.
In actual applications, Switching Power Supply only just needs to use electrolysis electricity in the case where needing to put down half-sinusoid filter
Holding, product requires relatively stringent to ripple, if in the case that Switching Power Supply product requires not tight because of load characteristic to ripple, can
In a manner of being combined by software and hardware, make the semiconductor switch device of the Switching Power Supply half-sinusoid behind commercial power rectification
Working frequency or dutycycle are adjusted between the lowest point and peak value to adjust the gain of resonance circuit, changes the lowest point of civil power half-sinusoid
Ratio with from peak value to Load transportation energy, the effect for reducing capacitance can be played, so as to cancel the electrolysis of Large Copacity
Electric capacity.
Circuit design is operated in perceptual model by variable frequency microwave power supply of the present utility model, the half-sinusoid peak after rectification
The working frequency for allowing control unit 1 to export during value is high, and at this moment circuit gain is relatively low, allows control during half-sinusoid valley after rectification
The working frequency that unit 1 processed exports is low, and at this moment circuit gain is higher, makes high frequency transformer 41 in this way to Load transportation
Energy in the electrochemical capacitor without Large Copacity automatic equalization, so as to reduce voltage or current ripples.
Demand of the variable frequency microwave power supply of the present utility model according to industrial microwave power supply to application environment, in variable frequency microwave electricity
The use to electrolysis power is eliminated in the design in source, has prevented the drawbacks of electrochemical capacitor uses in microwave power supply, there is provided
The variable frequency microwave power supply that a kind of service life is long and security performance is high.
Technical principle of the present utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With new principle, and the limitation to scope of protection of the utility model can not be construed in any way.Based on explanation herein,
Those skilled in the art, which would not require any inventive effort, can associate other specific implementations of the present utility model, side
Formula, these sides, formula are fallen within the scope of protection of the utility model.
Claims (6)
1. a kind of variable frequency microwave power supply, including：
Control unit and the first current rectifying and wave filtering circuit, first current rectifying and wave filtering circuit are carried out at rectifying and wave-filtering to input signal
Reason, and output rectification filter signal；
It is characterized in that：The variable frequency microwave power supply also includes：
Resonance circuit, what the first drive signal and first current rectifying and wave filtering circuit that reception described control unit exports exported
The rectifying and wave-filtering signal, and produce alternating signal；
High frequency transforming circuit, the alternating signal caused by the resonance circuit is received, and rectification is carried out to the alternating signal
Filtering process.
2. variable frequency microwave power supply according to claim 1, it is characterised in that：
First current rectifying and wave filtering circuit includes full bridge rectifier and the first electric capacity,
The full bridge rectifier carries out bridge rectifier processing to the input signal；
First electric capacity is non-electrolytic capacitor.
3. variable frequency microwave power supply according to claim 1, it is characterised in that：
The resonance circuit also includes drive circuit and resonance half-bridge circuit；
The drive circuit exports the second drive signal to the resonance half-bridge circuit；
The resonance half-bridge circuit includes first switch pipe and second switch pipe, the first switch pipe and the second switch pipe
The driving for receiving first drive signal and second drive signal is turned on and/or turned off.
4. variable frequency microwave power supply according to claim 3, it is characterised in that：
The high frequency transforming circuit includes high frequency transformer and the second current rectifying and wave filtering circuit；
The primary side winding of the high frequency transformer is connected with the output end of the resonance circuit；
The vice-side winding of the high frequency transformer is connected in series with second current rectifying and wave filtering circuit.
5. variable frequency microwave power supply according to claim 4, it is characterised in that：
The resonance circuit is by driving the first switch pipe with the second switch pipe described in the high frequency transformer
The alternating signal is produced in primary side winding.
6. variable frequency microwave power supply according to claim 3, it is characterised in that：
First drive signal of described control unit output is pwm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721223334.0U CN207184349U (en) | 2017-09-22 | 2017-09-22 | A kind of variable frequency microwave power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721223334.0U CN207184349U (en) | 2017-09-22 | 2017-09-22 | A kind of variable frequency microwave power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207184349U true CN207184349U (en) | 2018-04-03 |
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ID=61748175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721223334.0U Expired - Fee Related CN207184349U (en) | 2017-09-22 | 2017-09-22 | A kind of variable frequency microwave power supply |
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| Country | Link |
|---|---|
| CN (1) | CN207184349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649811A (en) * | 2019-08-29 | 2020-01-03 | 合肥博雷电气有限公司 | High-power microwave power supply capable of efficiently dissipating heat |
-
2017
- 2017-09-22 CN CN201721223334.0U patent/CN207184349U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649811A (en) * | 2019-08-29 | 2020-01-03 | 合肥博雷电气有限公司 | High-power microwave power supply capable of efficiently dissipating heat |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180403 Termination date: 20210922 |