CN108512279A - A kind of high-precision charging power source circuit and its operation method - Google Patents
A kind of high-precision charging power source circuit and its operation method Download PDFInfo
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- CN108512279A CN108512279A CN201810397215.XA CN201810397215A CN108512279A CN 108512279 A CN108512279 A CN 108512279A CN 201810397215 A CN201810397215 A CN 201810397215A CN 108512279 A CN108512279 A CN 108512279A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005070 sampling Methods 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000004146 energy storage Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- H02J7/0077—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of high-precision charging power source circuit and its operation methods, belong to pulse power electronic technology field, DC current is input in inversion switching tube, inverse switch pipe is equipped with the first output end, second output terminal and third output end, the thick charging resonating device of first output end connection, second output terminal connects the input terminal of boost rectifying circuit, the accurate charging resonating device of third output end connection, the output end of thick charging resonating device and the resonating device that precisely charges is connected to the input terminal of boost rectifying circuit, the output end connection load capacitance C3 of boost rectifying circuit, the both ends of C3 are parallel with sample circuit.The technical problem to be solved by the present invention is to propose a kind of high-precision charging power source circuit and its operation method, by the way that two sets of LC resonance circuits are arranged, the characteristics of sample circuit can be passed through, solves the unstable situation for the power supply output that temperature drift is brought, and can effectively improve power source charges precision.
Description
Technical field
The invention belongs to pulse power electronic technology fields, and in particular to a kind of high-precision charging power source circuit and its operation
Method.
Background technology
In pulse power electronic field, mostly by capacitive energy storage to realizing modulation of the alternating current to pulse in the form of load discharge.
Such modulator is used for providing microwave energy to vacuum tube (such as magnetron, klystron), finally accelerates to electronics.Technique
It is previously mainly based upon military use, but is nowadays generally deposited using pulse-modulator as the application of the accelerator system of pulse power supply
It is in our life, such as radiation treatment, industrial irradiation, flaw detection imaging.
The discharge pulse current precision of modulator depends primarily on the precision of its charge power supply, and current existing LC resonance is filled
Power supply is more traditional charge mode, forms busbar inductance with full-bridge rectification, then by the switching tube alternate conduction on full-bridge,
It is that load is charged with inductance and capacitor resonance, such charge power supply precision can only achieve 0.5%~1% level.With application
The continuous expansion of neighborhood, application requirement are also constantly being promoted, as physical test requirements for high precision, detection imaging clarity,
Irradiation dose accurately controls, and to promote the further development of such application, it is necessary to which the precision for promoting charge power supply arrives
One higher grade.
Invention content
According to the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to propose a kind of high-precision charging electricity
Source circuit and its operation method, by the way that two sets of LC resonance circuits are arranged, the characteristics of can passing through sample circuit, solves temperature drift
The unstable situation of the power supply output brought, can effectively improve power source charges precision.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of high-precision charging power source circuit, directly
Galvanic electricity stream is input in inversion switching tube, and inverse switch pipe is equipped with the first output end, second output terminal and third output end, the
The thick charging resonating device of one output end connection, second output terminal connect the input terminal of boost rectifying circuit, the connection of third output end
Precisely charging resonating device, the thick output end for charging resonating device and precisely charging resonating device are connected to boost rectifying circuit
The both ends of input terminal, output end connection the load capacitance C3, C3 of boost rectifying circuit are parallel with sample circuit.
In foregoing circuit, the thick charging resonating device is composed in series by capacitance C1 and inductance L1.It is described precisely charge it is humorous
The device that shakes is composed in series by capacitance C2 and inductance L2.
A kind of operation method of high-precision charging power source circuit, the method step include：
Step 1: reference generator generates reference voltage, it is sent to subtracter and forms thick charging reference voltage；
Step 2: slightly charging reference voltage is sent into comparator N1 together with sampling voltage；Reference voltage is sent with sampling voltage
Enter voltage comparator N2；
Step 3: when in comparator N2, judge whether sampling voltage reaches reference voltage, if sampling voltage reaches benchmark
Voltage stops the driving DriveA and DriveB of output inverter；
Step 4: in comparator N1, when sampling voltage not up to thick charging reference voltage, N1 comparators are that normality is defeated
Go out, two-way drives DriveA to be sent into G1 and G4, and DriveB is sent into G2 and G3, realizes the inversion charging process slightly to charge；Work as sampling
When voltage reaches thick charging reference voltage, comparator N1 overturnings export, and the switch overturning in control circuit drives the defeated of generator
Go out DriveA and be sent into G4 and G5, DriveB is sent into G6 and G3, realizes the inversion charging process precisely to charge；
Step 5: the charging process in step 4 is continued for, until sampling voltage reaches reference voltage, driving hair in N2
Raw device stops generating driving, and charging process stops.
Present invention has the advantages that:(1) two sets of LC resonance circuits are provided, wherein a set of smaller by resonance impedance, charging
Electric current is larger, charges to be thick, to ensure the fan-out capability of charge power supply.The resonance impedance in another set of LC resonance circuit is larger,
For the accurate charging to load capacitance after thick charging.(2) precision voltage reference and sample circuit are provided, reference voltage is made
Precision is more than the precision of output-index with sampling voltage precision.(3) control system is provided, realizes that voltage is slightly charged to precision charging
It is excessive, and ensure wide scope voltage output be satisfied by output accuracy requirement.
Description of the drawings
The content expressed by this specification attached drawing and the label in figure are briefly described below：
Fig. 1 is the functional block diagram of the high-precision charging power source circuit of the present invention；
Fig. 2 is the loop control theory block diagram of the high-precision charging power source circuit of the present invention；
In Fig. 1,1, inversion switching tube；2, slightly charge resonating device；3, precisely charge resonating device；4, load electricity
Hold；5, sampling device.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, each component that the specific implementation mode of the present invention is for example involved
Shape, construction, the mutual alignment and connection relation between each section, the effect of each section and operation principle, manufacturing process and
Operate with method etc., is described in further detail, to help those skilled in the art to inventive concept of the invention, technology
Scheme has more complete, accurate and deep understanding.
A kind of high-precision charging power source circuit, DC current are input to during inversion combined with switching tube, inverse switch pipe
If there are three output end, respectively the first output end, second output terminal and third output end, the first output end connection are slightly charged humorous
Shake device, and second output terminal connects the input terminal 1 of boost rectifying circuit, and third output end connects precisely charging resonating device, slightly
Charging resonating device and the precisely output end of charging resonating device are connected to the input terminal 2 of boost rectifying circuit, boosting rectified current
The both ends of output end connection the load capacitance C3, C3 on road are parallel with sample circuit.
As shown in Figure 1, slightly charging resonating device is that the smaller resonating device L1 and C1 of resonance impedance is composed in series, pass through V1
It is slightly charged with prodigious charging current to load capacitance with the alternate conduction of V4, V2 and V3；Precisely charging resonating device
It is composed in series for the larger resonating device L2 and C2 of resonance impedance, by G3 and G6, the alternate conduction of G4 and G5 to give load electricity
Hold C3 precisely to be charged.The conducting of V1~V6 or not it is driven by it G1~G6 decisions.The both ends of load capacitance C3, which are parallel with, to be taken
Sample circuit, sample circuit completes the sampling to voltage by a same ohmically resistance tap, because sample resistance is integral type knot
Structure, it is possible to allow to the sampling error that temperature drift is brought being minimized.
It is suitable for the operation method of high-precision charging power source circuit, particular content in a kind of high-precision charging power source circuit：
Benchmark is generated by precision voltage reference chip, that is, reference generator.As shown in Fig. 2, the reference voltage generated is sent to subtracter,
To subtract portion voltage, thick charging reference voltage is formed, comparator N1 is sent into together with sampling voltage.
Reference voltage and sampling voltage are sent into the output of the output control driving generator of voltage comparator N2, N2, when taking
After sample value reaches reference voltage, stop the driving DriveA and DriveB of output inverter, to reach the control of the accurate closed loop of circuit
System.
When sampling value not up to thick charging reference voltage, N1 comparators export for normality, and two-way drives DriveA to be sent into
G1 and G4, DriveB are sent into G2 and G3, realize the inversion charging process slightly to charge；When sampling value reaches thick charging reference voltage
When, comparator N1 overturning outputs make the switch in the control circuit in Fig. 2 overturn, the output DriveA of generator are driven to be sent into
G4 and G5, DriveB are sent into G6 and G3, realize the inversion charging process that precisely charges, until sampling value reaches reference voltage, drive
Dynamic generator stops generating driving, and charging process stops.
Such charging topological circuit and control system ensure that charging ability, low current are relatively fixed using large current charge
The method in charging time, is verified through practical power, can effectively improve power source charges precision, and can pass through the spy of sample circuit
Point solves the unstable situation for the power supply output that temperature drift is brought.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or without changing
Other occasions are directly applied to by the design of the present invention and technical solution, within protection scope of the present invention.This hair
Bright protection domain should be determined by the scope of protection defined in the claims.
Claims (4)
1. a kind of high-precision charging power source circuit, which is characterized in that DC current is input in inversion switching tube, inverse switch
Pipe is equipped with the first output end, second output terminal and third output end, the thick charging resonating device of the first output end connection, the second output
The input terminal of end connection boost rectifying circuit, the accurate charging resonating device of third output end connection, thick resonating device and the essence of charging
The output end of quasi- charging resonating device is connected to the input terminal of boost rectifying circuit, the output end connection load of boost rectifying circuit
The both ends of capacitance C3, C3 are parallel with sample circuit.
2. high-precision charging power source circuit according to claim 1, which is characterized in that the thick charging resonating device is by electricity
Hold C1 and inductance L1 to be composed in series.
3. high-precision charging power source circuit according to claim 1, which is characterized in that the accurate charging resonating device by
Capacitance C2 and inductance L2 are composed in series.
4. a kind of operation method of high-precision charging power source circuit, which is characterized in that the method step includes：
Step 1: reference generator generates reference voltage, it is sent to subtracter and forms thick charging reference voltage；
Step 2: slightly charging reference voltage is sent into comparator N1 together with sampling voltage；Reference voltage is sent into electricity with sampling voltage
Press comparator N2；
Step 3: when in comparator N2, judge whether sampling voltage reaches reference voltage, if sampling voltage reaches benchmark electricity
Pressure, stops the driving DriveA and DriveB of output inverter；
Step 4: in comparator N1, when sampling voltage not up to thick charging reference voltage, N1 comparators export for normality, two
Road drives DriveA to be sent into G1 and G4, and DriveB is sent into G2 and G3, realizes the inversion charging process slightly to charge；When sampling voltage reaches
When to thick charging reference voltage, comparator N1 overturnings export, and the switch overturning in control circuit drives the output of generator
DriveA is sent into G4 and G5, and DriveB is sent into G6 and G3, realizes the inversion charging process precisely to charge；
Step 5: the charging process in step 4 is continued for, until sampling voltage reaches reference voltage, driving generator in N2
Stop generating driving, charging process stops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810397215.XA CN108512279B (en) | 2018-04-28 | 2018-04-28 | High-precision charging power supply circuit and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810397215.XA CN108512279B (en) | 2018-04-28 | 2018-04-28 | High-precision charging power supply circuit and operation method thereof |
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| Publication Number | Publication Date |
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| CN108512279A true CN108512279A (en) | 2018-09-07 |
| CN108512279B CN108512279B (en) | 2022-05-03 |
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| CN201810397215.XA Active CN108512279B (en) | 2018-04-28 | 2018-04-28 | High-precision charging power supply circuit and operation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202282744U (en) * | 2011-11-09 | 2012-06-20 | 上海理工大学 | High-power high-frequency high-voltage switch power supply |
| CN202435305U (en) * | 2011-12-16 | 2012-09-12 | 芜湖国睿兆伏电子股份有限公司 | Resonance drive circuit for improving capacitor charging precision |
| CN202872641U (en) * | 2012-07-16 | 2013-04-10 | 中国人民解放军军械工程学院 | Double bridge phase shift series-parallel resonance high-voltage direct-current power source |
| CN206349917U (en) * | 2016-12-13 | 2017-07-21 | 深圳职业技术学院 | A kind of resonance circuit |
| KR20180004675A (en) * | 2016-07-04 | 2018-01-12 | 숭실대학교산학협력단 | Bidirectional Converter with Auxiliary LC Resonant Circuit and Operating Method thereof |
-
2018
- 2018-04-28 CN CN201810397215.XA patent/CN108512279B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202282744U (en) * | 2011-11-09 | 2012-06-20 | 上海理工大学 | High-power high-frequency high-voltage switch power supply |
| CN202435305U (en) * | 2011-12-16 | 2012-09-12 | 芜湖国睿兆伏电子股份有限公司 | Resonance drive circuit for improving capacitor charging precision |
| CN202872641U (en) * | 2012-07-16 | 2013-04-10 | 中国人民解放军军械工程学院 | Double bridge phase shift series-parallel resonance high-voltage direct-current power source |
| KR20180004675A (en) * | 2016-07-04 | 2018-01-12 | 숭실대학교산학협력단 | Bidirectional Converter with Auxiliary LC Resonant Circuit and Operating Method thereof |
| CN206349917U (en) * | 2016-12-13 | 2017-07-21 | 深圳职业技术学院 | A kind of resonance circuit |
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| Publication number | Publication date |
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| CN108512279B (en) | 2022-05-03 |
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Effective date of registration: 20230718 Address after: 241000 No.10 Ruifu Road, Longshan street, Wuhu Economic and Technological Development Zone, Anhui Province Patentee after: Wuhu maikewei Electromagnetic Technology Co.,Ltd. Address before: 241000 west side of Jiuhua North Road, Jiujiang Development Zone, Wuhu City, Anhui Province Patentee before: WUHU ZHONGDIAN ZHAOWEI ELECTRONIC Co.,Ltd. |
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