CN105743341A - Voltage multiplication circuit - Google Patents
Voltage multiplication circuit Download PDFInfo
- Publication number
- CN105743341A CN105743341A CN201610210559.6A CN201610210559A CN105743341A CN 105743341 A CN105743341 A CN 105743341A CN 201610210559 A CN201610210559 A CN 201610210559A CN 105743341 A CN105743341 A CN 105743341A
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- electric capacity
- end electric
- voltage
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- switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
Abstract
The invention discloses a voltage multiplication circuit. The voltage multiplication circuit comprises a front-end capacitor C1 and a rear-end capacitor C2, wherein front-end capacitor C1 and the rear-end capacitor C2 are connected in parallel, a pole of each of the front-end capacitor C1 and the rear-end capacitor C2 is grounded, the other poles of the front-end capacitor C1 and the rear-end capacitor C2 are connected with an output end of a charging power supply, a switch S1, an inductor L1 and a resistor R are sequentially connected in series between the charging power supply and the rear-end capacitor C2, a switch S2 and an inductor L1 are connected in parallel to the two poles of the rear-end capacitor C2 and are sequentially connected in series, and the capacitance of the front-end capacitor C1 is larger than the capacitance of the rear-end capacitor C2. The circuit disclosed by the invention is simple in structure, a few circuit components are used, the principle and the complexity of the voltage multiplication circuit are reduced compared with a Marx voltage multiplication circuit and an LTD voltage multiplication circuit; with voltage multiplication provided by such mode, the switch number and the capacitor number are reduced, and the system stability can be ensured; in the voltage multiplication circuit, a pulse transformer or a coaxial structure frequently used for voltage multiplication are not used, a magnetic core is not needed, the switches are accurately conducted only through trigger, and voltage multiplication can be achieved for a small-capacitance capacitive load.
Description
Technical field
The present invention relates to the voltage multiplication technology in pulse power primary energy and custom circuit, specifically, be the voltage multiplying circuit of a kind of non-Marx type；Terminating before this device can to charging bulky capacitor charging to DC source, and rear end small capacitances can realize the voltage multiplication on small capacitances by two switch motions.It is mainly used in pulse power supply accelerator primary power systems.
Background technology
In pulse power system, the technology path producing high electric field pulse mainly has two kinds: a kind of by the direct multiplication of voltage of Marx circuit, another kind is by LTD circuit inductance superposition multiplication of voltage.
As it is shown in figure 1, be the typical circuit of Marx generator, this circuit in parallel charges, discharged in series, it is possible to provide high voltage；Shunt capacitance is charged by Marx generator, afterwards switch Guan Bi discharged in series during electric discharge, output voltage be capacitor number and charging voltage long-pending.This circuit advantage: due to the unidirectional general character of diode, what each switch can be independent opens or disconnects, and the output voltage of system is adjustable.Can using relatively low DC source, current-sharing effect is notable, and switch synchronizes triggering less demanding, it is not necessary to demagnetization loop, relatively higher dutycycle, energy loss is little, and rising edge is fast.Meanwhile, the High-Voltage Insulation pressure of outfan is big, can only export negative pulse, and the gate leve of relative complex drives design (this is not to be directly over the ground due to each switch, is in suspension position), and parasitic capacitance effect is obvious.
As in figure 2 it is shown, be Magnetic isolation multiplication of voltage, typical circuit topology is LTD technology, and the voltage superposition that former limit is produced by magnetic field by LTD, to secondary, produces high pressure at secondary, and the insulating pressure of primary circuit is substantially reduced；In LTD circuit, each charge circuit transfers energy to secondary by transformator, and multiple charge circuits are on former limit, and the voltage that secondary sensing produces is original edge voltage superposition sum, and this circuit is also referred to as averager circuit.This technology of high pressure obtained by sensing the mode of superposition is called LTD(lineartransformerdriver in high power pulse) technology, it have the remarkable advantages that the transformator utilizing low inductance most, it is superimposed upon on secondary load produces high pressure by sensing, high-pressure side need not switch, and the voltage of primary is relatively not high, this just significantly reduces the pressure to high voltage pulse device.The charge and discharge process of capacitance group is all in parallel, and insulating pressure is little, and the pulse power supply of current main flow all have employed LTD technology.Owing to transformator needs demagnetization, so operative duty cycles should not be too high, generally more than 10%, the persistent period of pulse is to be determined by the saturated conditions of magnetic core, and transformer leakage inductance determines pulse rising front, when system is huge, the synchronization of switch triggers and requires height, assembling complexity.
Having scholar to propose hybrid circuit topology recently: in mixed model in a LTD module, each fundamental circuit is Marx generator loop, what switch external trigger conducting front, rear class switch self breakdown conducting.The circuit topological structure of mixed model LTD module a kind of circuit structure between pure series connection and pure parallel connection just, in theory, mixed type can play the advantage of Marx and LTD, can avoid again the technological difficulties each faced to a certain extent.But actually technical bottleneck is a lot, is currently in the Design Theory stage, and practical application example is less.
Summary of the invention
It is an object of the invention to provide a kind of novel simple and easy voltage multiplying circuit, be applied in pulse power arteries and veins power source or primary power systems, voltage multiplication on electric capacity can be realized by biswitch and a capacitor charging power.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of voltage multiplying circuit, including:
Front end electric capacity C1 in parallel and rear end electric capacity C2,
The one of front end electric capacity C1 and rear end electric capacity C2 is ground connection extremely each, and front end electric capacity (C1) another pole is connected to the outfan of charge power supply,
Being sequentially connected in series switch S1, inductance L1 and resistance R between described charge power supply and rear end electric capacity C2, the rear end electric capacity (C2) of series connection, switch (S1), inductance (L1), resistance (R) are in parallel with front end electric capacity (C1),
The two poles of the earth of described rear end electric capacity C2 are parallel with the switch S2 and inductance L2 that are sequentially connected in series,
The capacitance of the described front end electric capacity C1 capacitance more than rear end electric capacity C2.
In technique scheme, the capacitance of described front end electric capacity C1 is at least 50 times of rear end electric capacity C2.
In technique scheme, the representative value of described front end electric capacity C1 capacitance is 2000uF/300V, and the representative value of rear end electric capacity C2 is 4uF/40kV.
In technique scheme, the charging process of described circuit is:
Step one: first front end electric capacity C1 is directly charged by charge power supply so that the magnitude of voltage on the electric capacity C1 of front end is U；
Step 2: Guan Bi switch S1, rear end electric capacity C2 is charged by charge power supply by inductance L1 and resistance R so that the magnitude of voltage on the electric capacity C2 of rear end is 2U；
Step 3: disconnect switch S1, charge power supply carries out power supply to front end electric capacity C1 and supplements and make its magnitude of voltage to U, is closed at switch S2, and rear end electric capacity C2 carries out LC oscillation circuit by inductance L2, until the voltage on the electric capacity C2 of rear end is when be-2U1, disconnection switchs S2；
Step 4: the voltage on the electric capacity C2 of rear end is that on-2U1 basis, the voltage of maintenance front end electric capacity C1 is U, and Guan Bi switch S1, rear end electric capacity C2 is charged to 4U by front end electric capacity C1 again by inductance L1 and resistance R；
Step 5: repeat the voltage reversal of step 2, step 3, step 4, front end electric capacity C1 charges, and rear end electric capacity C2 is discharged by front end electric capacity C1, finally realizes the voltage multiplication on the electric capacity C2 of rear end.
In technique scheme, in described step 4, when rear end electric capacity C2 is charged by front end electric capacity C1, the voltage of rear end electric capacity C2 is-2U.
In sum, owing to have employed technique scheme, the invention has the beneficial effects as follows:
One, the circuit of the present invention realizes voltage multiplication by voltage reversal.Circuit structure is simple, and circuit components is few, and is substantially reduced in complexity in principle than Marx voltage multiplying circuit and LTD voltage multiplying circuit；
Two, the voltage multiplication that the present invention is provided by this kind of mode, greatly reduces number of switches and electric capacity number, and system stability is ensured.
Three, the voltage multiplying circuit of the present invention does not use the conventional pulse transformer of multiplication of voltage or coaxial configuration, it is not necessary to using magnetic core, switch only needs, by triggering and accurately conducting, the capacitive load of low capacity to be realized voltage multiplication.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is Marx generator typical circuit；
Fig. 2 is Magnetic isolation multiplication of voltage topology is LTD typical circuit；
Fig. 3 is fundamental diagram of the present invention；
Fig. 4 is specific embodiment of the invention figure.
Detailed description of the invention
As shown in Figure 3, for principles of the invention circuit diagram, whole circuit includes a front end electric capacity C1 and a rear end electric capacity C2, front end electric capacity C1 and a rear end electric capacity C2 is in parallel, a wherein electrode ground connection of a front end electric capacity C1 and rear end electric capacity C2, another electrode is connected to charge power supply.In order to realize mutually charging thus realizing the multiplication of voltage of electric capacity, therefore, an electrode of front end electric capacity C1 connects charge power supply, and another electrode is connected to ground；And be sequentially connected in series between charge power supply and rear end electric capacity C2 switch S1 inductance L1 and resistance R, by switch Guan Bi switch S1 formed complete loops can so that electric capacity C1 electric capacity C2 to the back-end in front end discharges so that the voltage on the electric capacity C2 of rear end is double.But to continue to realize the voltage multiplication on the electric capacity C2 of rear end, on the two poles of the earth of rear end electric capacity C2, therefore between switch S2 and inductance L2, inductance L2 and the rear end electric capacity C2 of a series connection in parallel again, form concussion loop.
The concrete charging process of the present invention is:
One, the charging of front end electric capacity is first designed, front end electric capacity C1 is charged to U1 by charge power supply by front end electric capacity, in order to ensure rear end electric capacity C2(electric capacity to be charged) voltage realizes or close to 2U1, the capacitance needing front end electric capacity C1 is far longer than rear end electric capacity C2, the charging process of this front end electric capacity general is charging battery process, in the present invention, electric capacity C1 in front end is 2000uF/300V, and rear end electric capacity C2 is 4uF/40kV.
Two, front end electric capacity fills C1 electricity to U1, by switching S1, rear end electric capacity C2 is charged, and this process is the equivalent process of fast Marx generator electric discharge, and after rear end electric capacity C2 charging, voltage rises to 2U1.
Three, after electric capacity C2 in rear end charges to 2U1, switch S1 disconnects, and charge power supply is to the supplementary voltage of front end electric capacity C1 to U1.Meanwhile, switch S2 conducting, rear end electric capacity C2 realizes LC oscillation circuit by inductance L2, and when rear end electric capacity C2 voltage reversal to-2U1, switch S2 disconnects.
Four, rear end electric capacity C2 voltage reversal is to-2U1, maintain to front end electric capacity C1 and supplement voltage to after U1, switch S1 conducting, front end electric capacity C1 again by inductance L1 and resistance R to C2(now voltage-2U1) charging, in one cycle time, the voltage of C2 is charged to 4U1.
Five, repeating the voltage reversal of 234, front end electric capacity C1 charges, and front end electric capacity C1, to rear end electric capacity C2 charging process, can realize the voltage multiplication on the electric capacity C2 of rear end.
As shown in Figure 4, being specific embodiment of the invention circuit, the implementing of circuit of the present invention needs accurate trigger control circuit to switching on-off and the control of charge power supply in the present invention, coordinates above-mentioned charging process can realize voltage multiplication.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any new feature disclosed in this manual or any new combination, and the step of the arbitrary new method disclosed or process or any new combination.
Claims (5)
1. a voltage multiplying circuit, it is characterised in that including:
Front end electric capacity (C1) in parallel and rear end electric capacity (C2),
One extremely respective ground connection of front end electric capacity (C1) and rear end electric capacity (C2), front end electric capacity (C1) another pole is connected to the outfan of charge power supply,
Being sequentially connected in series switch (S1), inductance (L1) and resistance (R) between described charge power supply and rear end electric capacity (C2), the rear end electric capacity (C2) of series connection, switch (S1), inductance (L1), resistance (R) are in parallel with front end electric capacity (C1),
The two poles of the earth of described rear end electric capacity (C2) are parallel with the switch (S2) and inductance (L2) that are sequentially connected in series,
The capacitance of described front end electric capacity (C1) capacitance more than rear end electric capacity (C2).
2. a kind of voltage multiplying circuit according to claim 1, it is characterised in that the capacitance of described front end electric capacity (C1) is at least 50 times of rear end electric capacity (C2).
3. a kind of voltage multiplying circuit according to claim 2, it is characterised in that the representative value of described front end electric capacity (C1) capacitance is 2000uF/300V, and the representative value of rear end electric capacity (C2) is 4uF/40kV.
4. a kind of voltage multiplying circuit according to claim 3, it is characterised in that the charging process of described circuit is:
Step one: first front end electric capacity (C1) is directly charged by charge power supply so that the magnitude of voltage on front end electric capacity (C1) is U；
Step 2: Guan Bi switch (S1), rear end electric capacity (C2) is charged by charge power supply by inductance (L1) and resistance (R) so that the magnitude of voltage on rear end electric capacity (C2) is 2U；
Step 3: disconnect switch (S1), charge power supply carries out power supply to front end electric capacity (C1) and supplements and make its magnitude of voltage to U, it is closed at switch (S2), rear end electric capacity (C2) carries out LC oscillation circuit by inductance (L2), until when the voltage on rear end electric capacity (C2) is-2U, disconnecting switch (S2)；
Step 4: the voltage on rear end electric capacity (C2) is that on-2U1 basis, the voltage of maintenance front end electric capacity (C1) is U, and Guan Bi switch (S1), rear end electric capacity (C2) is charged to 4U by front end electric capacity (C1) again by inductance (L1) and resistance (R)；
Step 5: repeat the voltage reversal of step 2, step 3, step 4, front end electric capacity (C1) charges, and rear end electric capacity (C2) is discharged by front end electric capacity (C1), finally realizes the voltage multiplication on rear end electric capacity (C2).
5. the charging process of a kind of voltage multiplying circuit according to claim 4, it is characterised in that in described step 4, when rear end electric capacity (C2) is charged by front end electric capacity (C1), the voltage of rear end electric capacity (C2) is-2U.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210559.6A CN105743341B (en) | 2016-04-07 | 2016-04-07 | A kind of voltage multiplying circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210559.6A CN105743341B (en) | 2016-04-07 | 2016-04-07 | A kind of voltage multiplying circuit |
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| CN105743341A true CN105743341A (en) | 2016-07-06 |
| CN105743341B CN105743341B (en) | 2018-07-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017799A (en) * | 2017-04-24 | 2017-08-04 | 上海激光电源设备有限责任公司 | Pockers cell nanosecond pulse power supply based on solid-state switch |
| CN107070179A (en) * | 2017-03-20 | 2017-08-18 | 合肥雷科电子科技有限公司 | A kind of top punching of pulse transformer eliminates circuit and its top rushes removing method |
| CN107124163A (en) * | 2017-05-04 | 2017-09-01 | 重庆大学 | A kind of composite mode solid state pulse source |
| CN107659200A (en) * | 2017-11-15 | 2018-02-02 | 西安交通大学 | Cascade connection type submicrosecond level high-voltage pulse generator for vacuum interrupter ageing |
| CN110995210A (en) * | 2019-11-23 | 2020-04-10 | 重庆大学 | Multi-turn LTD pulse generator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2102639A (en) * | 1981-07-23 | 1983-02-02 | British Aerospace | Voltage multiplier |
| CN102447213A (en) * | 2011-12-09 | 2012-05-09 | 中国科学院安徽光学精密机械研究所 | High-repetition rate all-solid-state high-voltage pulse generator |
| CN205647260U (en) * | 2016-04-07 | 2016-10-12 | 中国工程物理研究院应用电子学研究所 | Voltage multiplying circuit |
-
2016
- 2016-04-07 CN CN201610210559.6A patent/CN105743341B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2102639A (en) * | 1981-07-23 | 1983-02-02 | British Aerospace | Voltage multiplier |
| GB2102639B (en) * | 1981-07-23 | 1984-10-10 | British Aerospace | Voltage multiplier |
| CN102447213A (en) * | 2011-12-09 | 2012-05-09 | 中国科学院安徽光学精密机械研究所 | High-repetition rate all-solid-state high-voltage pulse generator |
| CN205647260U (en) * | 2016-04-07 | 2016-10-12 | 中国工程物理研究院应用电子学研究所 | Voltage multiplying circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107070179A (en) * | 2017-03-20 | 2017-08-18 | 合肥雷科电子科技有限公司 | A kind of top punching of pulse transformer eliminates circuit and its top rushes removing method |
| CN107017799A (en) * | 2017-04-24 | 2017-08-04 | 上海激光电源设备有限责任公司 | Pockers cell nanosecond pulse power supply based on solid-state switch |
| CN107124163A (en) * | 2017-05-04 | 2017-09-01 | 重庆大学 | A kind of composite mode solid state pulse source |
| CN107659200A (en) * | 2017-11-15 | 2018-02-02 | 西安交通大学 | Cascade connection type submicrosecond level high-voltage pulse generator for vacuum interrupter ageing |
| CN110995210A (en) * | 2019-11-23 | 2020-04-10 | 重庆大学 | Multi-turn LTD pulse generator |
| CN110995210B (en) * | 2019-11-23 | 2022-02-11 | 重庆大学 | Multi-turn LTD pulse generator |
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| CN105743341B (en) | 2018-07-20 |
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