CN102412753B - High-voltage and high-power repetitive pulse power supply - Google Patents
High-voltage and high-power repetitive pulse power supply Download PDFInfo
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- CN102412753B CN102412753B CN 201110376569 CN201110376569A CN102412753B CN 102412753 B CN102412753 B CN 102412753B CN 201110376569 CN201110376569 CN 201110376569 CN 201110376569 A CN201110376569 A CN 201110376569A CN 102412753 B CN102412753 B CN 102412753B
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Abstract
The invention discloses a high-voltage and high-power repetitive pulse power supply, which comprises a charging power supply, an energy-storing capacitor group, a residual voltage processing branch circuit and an energy feedback branch circuit, wherein the energy-storing capacitor group comprises a primary capacitor C1 and a secondary capacitor C2 which are connected in series and have the same capacitance and opposite polarity directions; the energy feedback branch circuit is connected in parallel with the energy-storing capacitor group; the residual voltage processing branch circuit is connected in parallel to the two ends of the secondary capacitor C2 respectively; and the charging power supply is connected in parallel to the two ends of the primary capacitor C1. In the high-voltage and high-power repetitive pulse power supply, a dual-capacitor energy saving and discharging way is adopted, so that the primary capacitor is free from back voltage, the secondary capacitor is free from back voltage or only bears the back voltage below 10 percent, and reliability of a unipolar capacitor is enhanced, the working service life of the unipolar capacitor is prolonged, and the working frequency of a system is increased; and the high-voltage and high-power repetitive pulse power supply is a novel compact repetitive pulse power supply based on dual-capacitor discharging, resonant mode energy feedback and energy-storing capacitor residual voltage processing.
Description
Technical field
The invention belongs to Pulse Power Techniques, be specifically related to be applicable in the Pulse Power Techniques power supply of the high-power repetition pulse power system of inductive load, particularly the topological structure of the power supply of repetition pulse power system.
Background technology
The repetition pulse power technology has important application in scientific research and defence and military, be the important directions of Pulse Power Techniques development.Producing repetition pulse power needs supporting high-power repetition pulse power power-supply, and the aspects such as the repetition rate of this power supply, capacity, pulsewidth and reliability all need the requirement that reaches certain.
The load of repetition pulse power power-supply mainly is divided into resistive load, capacitive load and inductive load three classes.Wherein the load current of inductive load type repetition pulse power technology is large, time constant is large, can be used for producing the fields such as impulse magnetic field.The present invention is mainly for inductive load type repetition pulse power power-supply.
The most capacitance energy storages that adopt of repetition pulse power power-supply that are used at present inductive load.Document " 30TRepeating Pulsed Field System for Neutron Diffraction " (IEEE Transactions on Applied Superconductivity, 2000,10 (1): the circuit topology scheme that proposes 534-537) is the main flow scheme of using at present.Its embodiment is roughly: at first by charge power supply capacitor charging is arrived rated voltage, then by thyristor electric capacity is discharged to inductive load (magnet), in order to realize and to improve repetition rate, large afterflow inductance of series connection in continuous current circuit, its remaining magnetic field energy can be transferred in the large afterflow inductance after magnet was finished a pulsed discharge, this large inductance shakes with storage capacitor again then, and remaining magnetic field energy feeds back in the storage capacitor in the magnet thereby finally make.
The method mainly contains following two deficiencies: storage capacitor will shake with large inductance, make reverse voltage on the electric capacity near forward voltage, and unipolar pulse storage capacitor commonly used should not bear too high back-pressure in the high-power pulse power circuit, too high back-pressure has all proposed harsh requirement to its life-span, energy density and fail safe etc., the cost of bipolarity storage capacitor is more much higher than general unipolar pulse storage capacitor, because the power source integral cost depends primarily on electric capacity, has so just improved the cost of whole power-supply system; And the high-frequency resonant charge power supply must disconnect avoiding its high-frequency rectification bridge to flow through large electric current during capacitor discharge, has limited the raising of repetition rate.
Summary of the invention
Unipolarity storage capacitor back-pressure is high in the existing inductive load type repetition pulse power technology, the life-span is low in order to overcome, and the shortcoming that system's repetition rate is limited the invention provides the high-power repetition pulse power power-supply of a kind of novel high-pressure.
A kind of high-power repetition pulse power power-supply provided by the invention is characterized in that, this power supply comprises charge power supply, energy capacitance set, residual voltage processing branch road and energy feedback branch road at least;
Wherein, energy capacitance set comprises main capacitance C1 and the secondary capacitor C 2 that is connected in series, and both capacitances are identical, opposite polarity directions; Energy feedback branch road and energy capacitance set are connected in parallel, and the negative pole of the secondary capacitor C 2 of the current direction of this branch road that only allows to flow through; Residual voltage is processed branch circuit parallel connection at the two ends of secondary capacitor C 2, or with the mode of the resonance voltage reversal with secondary capacitor C 2 two ends, or lets out the residual voltage that can eliminate fully on the secondary capacitor C 2 by resistance; Charge power supply is connected in parallel on main capacitance C1 two ends, and charge power supply is only to main capacitance C1 positive charge.
The technical program mainly contains following technical characterstic: (1) adopts the form of two capacitances in series energy storage discharges, can make in the whole course of work on the main capacitance without back-pressure, on the secondary electric capacity without back-pressure or only bear back-pressure below 10%, thereby improved reliability and the working life of unipolarity electric capacity, reduced the cost of whole power-supply system; (2) by adopting energy feedback branch road and residual voltage to process branch road, can realize the recovery of load storage energy, more than 90% of load storage energy when the rate of recovery can reach the load current maximum has reduced needed rechargeable energy of next work period; (3) owing to adopt two capacitances in series mode of operations, can adopt the high-frequency resonant charge power supply, be conducive to improve the repetition rate of system.In a word, the present invention is a kind of novel compact repetition pulse power power-supply based on two capacitor discharges, resonance manner energy feedback, the processing of storage capacitor residual voltage.
Description of drawings
Fig. 1 is know-why block diagram of the present invention.
Fig. 2 is based on the circuit theory diagrams of thyristor feedback energy and resistance processing residual voltage.
Fig. 3 is based on the circuit theory diagrams of diode feedback energy and inductance processing residual voltage.
Embodiment
It is as follows that the present invention solves the scheme that its technical problem takes:
As shown in Figure 1, repetition pulse power power-supply provided by the invention comprises charge power supply 1, energy capacitance set, residual voltage processing branch road 2 and energy feedback branch road 3, wherein, energy capacitance set comprises main capacitance C1 and secondary capacitor C 2, both capacitances are identical, are connected in series opposite polarity directions.
Energy feedback branch road 3 is connected in parallel with energy capacitance set, and 3 of energy feedback branch roads allow the to flow through negative pole of the secondary capacitor C 2 of current direction of this branch road; Residual voltage is processed the two ends that branch road 2 is connected in parallel on secondary capacitor C 2, and the residual voltage after the end that is used for discharge is processed, and particularly, or with the mode of the resonance voltage reversal with secondary capacitor C 2 two ends, or lets out the residual voltage that can eliminate fully on the secondary capacitor C 2 by resistance, etc.Charge power supply 1 is connected in parallel on main capacitance C1 two ends, can adopt the high-frequency resonant charge power supply.
It is in parallel with energy capacitance set after switch protection branch road 4 and inductive load 5 are connected in series.
Its operation principle is as follows: at first stage, to inductive load 5 discharge, peak value and pulsewidth that the tank voltage when the appearance value of the storage capacitor of selection and initial discharge can the proof load electric current reach necessary requirement to energy capacitance set by switch protection branch road 4; At second stage, the energy of storage feeds back in the energy capacitance set by the mode of energy feedback branch road 3 with resonance on the inductive load 5; At three phases, the residual voltage on the secondary capacitor C 2 is processed branch road 2 by residual voltage and is processed, and the corresponding switch of rear disconnection is disposed.In the above-mentioned course of work, charge power supply 1 can be charged to main capacitance C1 in the whole course of work always, after the residual voltage processing procedure on the secondary capacitor C 2 and the charging process on the main capacitance C1 were all finished, the previous work period finished, and enters next cycle.
In specific implementation process, concrete element and the parameter of each main composition of selective system part make system that the different courses of work be arranged as required, with the operating frequency that improves better system, stability, reliability, economy etc.
The below provides two kinds of different implementation examples.Example 1 is processed residual voltage based on thyristor feedback energy and resistance as shown in Figure 2.Specifically being constructed as follows of circuit: main capacitance C1 and secondary capacitor C 2 capacitances equate that be connected in series, the positive pole of main capacitance C1 connects the positive pole of secondary capacitor C 2; For safety, the two ends of main capacitance C1 and secondary capacitor C 2 are parallel with respectively lets out the energy branch road, succinct in order to draw, and does not mark among the figure.Residual voltage processing branch road 2 is connected in series by K switch 3 and resistance R 2 and forms, the positive pole of the secondary capacitor C 2 of another termination of K switch 3, the negative pole of the secondary capacitor C 2 of another termination of R2.
Energy feedback branch road 3 is by thyristor Q2, inductance L 1, and resistance R 1 is in series successively, and the negative electrode of thyristor Q2 connects the negative pole of secondary capacitor C 2, and anode connects inductance L 1, and resistance R 1 one ends are connected with L1, and the other end is connected with the negative pole of main capacitance C1; Switch protection branch road 4 is made of thyristor Q1 series connection protection inductance L p, and the anode of Q1 connects the negative pole of secondary capacitor C 2, and negative electrode is connected with protection inductance L p; (because actual inductive load can have resistance, and the size of this resistance has material impact for the operating state of system to inductive load 5, so inductive load 5 represents with Lm series connection Rm in the drawings.) termination protection inductance L p, the negative pole of another termination main capacitance C1.Charge power supply 1 is connected in parallel on the two ends of main capacitance C1, and 1 of charge power supply is to main capacitance C1 positive charge.
The course of work of example 1 comprises following 3 processes:
(1) discharge process: thyristor Q1 conducting, to load Lm and Rm discharge, load current Im rises to first maximum, then drops to zero by protection inductance L p for C1 and C2.
(2) resonance feedback energy process: thyristor Q2 conducting, C1 and C2 carry out feedback through L1 and R1 discharge with energy, until electric current I 1 zero passage, Q2 turn-offs.
(3) residual voltage processing procedure: K switch 3 closures, the electric energy on the C2 is let out energy by resistance R 2, can be complete until let out, C2 voltage is zero, again cut-off switch K3.
In above three processes, charge power supply 1 can be charged to C1 always.If the series voltage of energy capacitance set was lower than rated value after above three processes were finished, then charge power supply 1 continues C1 is charged.Complete when above three processes, the series voltage of capacitor group reaches rated value, then can continue to begin the next course of work.
The advantage of this scheme is that operation principle is simple, is easy to control, does not all have back-pressure on main capacitance C1 and the secondary capacitor C 2 fully.
Example 2 is processed residual voltage based on diode feedback energy and inductance as shown in Figure 3.Its circuit structure only has slightly difference of residual voltage processing branch road 2 and energy feedback branch road 3 to similar based on the circuit of thyristor feedback energy and resistance processing residual voltage.Particularly, change the thyristor Q2 in the example 1 energy feedback branch road 3 into diode D2, the position of diode D2 is identical with thyristor Q2 with direction; In addition, residual voltage processing branch road 2 is changed to by thyristor Q3 series inductance L2 and consists of, and the anode of thyristor Q3 is connected with the positive pole of secondary capacitor C 2, and negative electrode links to each other with inductance L 2, and the other end of L2 links to each other with the negative pole of secondary capacitor C 2.
The course of work of example 2 comprises following 4 processes:
(1) discharge process: thyristor Q1 conducting; to load Lm and Rm discharge, load current Im rises to first maximum by protection inductance L p for C1 and C2, then when the voltage at energy feedback branch road 3 two ends is minus; diode D2 conducting, first process finishes.
(2) three rank resonance feedback energy processes: when first stage finishes, the D2 conducting, but Q1 do not turn-off, and this moment, the operating state of circuit was three rank resonant process.Select when suitable when the parameter of circuit, Q1 will turn-off over time.
(3) second order resonance feedback energy process: still conducting of diode D2, C1 and C2 carry out feedback through L1 and R1 discharge with energy, until electric current I 1 zero passage, D2 turn-offs.
(4) residual voltage processing procedure: thyristor Q3 conducting, the electric energy on the C2 shifts by inductance L 2, and when current over-zero, Q3 turn-offs, and this process finishes, and the voltage of C2 is for negative.
In above Four processes, charge power supply 1 can be charged to C1 always.If the series voltage of energy capacitance set was lower than rated value after above Four processes was finished, then charge power supply 1 continues C1 is charged.Complete when above Four processes, the series voltage of capacitor group reaches rated value, then can continue to begin the next course of work.
In this scheme, do not have back-pressure on the main capacitance C1 fully, secondary capacitor C 2 will be born the back-pressure of less than 10%, but the scheme in the phase ratio 1, and required rechargeable energy of each work period is less, and is also relatively lower to the requirement of charge power supply 1.
More than two examples be not the unique realization approach of this repetition pulse power power-supply, two kinds of representational specific implementation methods just.The switching device of all right energy feedback branch road 3 adopts thyristor, and residual voltage is processed branch road 2 and adopted Thyristors in series inductance and resistance; The switching device of energy feedback branch road 3 adopts diode, and residual voltage is processed branch road 2 and adopted high frequency non-semiconductor switching device series resistance; Etc..By concrete element form and the parameter size of each main composition part of optimization system, can improve better the life and reliability of energy capacitance set, improve the operating frequency of system.
Claims (2)
1. a high-power repetition pulse power power-supply is characterized in that, this power supply comprises charge power supply, energy capacitance set, residual voltage processing branch road and energy feedback branch road at least;
Wherein, energy capacitance set comprises main capacitance C1 and the secondary capacitor C 2 that is connected in series, and both capacitances are identical, opposite polarity directions; Energy feedback branch road and energy capacitance set are connected in parallel, and the negative pole of the secondary capacitor C 2 of the current direction of this branch road that only allows to flow through; Residual voltage is processed branch circuit parallel connection at the two ends of secondary capacitor C 2, with the mode of the resonance voltage reversal with secondary capacitor C 2 two ends; Charge power supply is connected in parallel on main capacitance C1 two ends, and charge power supply is only to main capacitance C1 positive charge;
Described residual voltage is processed branch road and is comprised thyristor Q3 and the series inductance L2 that is connected in series, and the anode of thyristor Q3 is connected with the positive pole of secondary capacitor C 2, and negative electrode links to each other with an end of inductance L 2, and an other end of inductance L 2 links to each other with the negative pole of secondary capacitor C 2;
Described energy feedback branch road comprises diode and the inductance L 1 that is connected in series successively, and the negative electrode of diode connects the negative pole of secondary capacitor C 2, and diode cathode connects an end of inductance L 1, and inductance L 1 other end is connected with the negative pole of main capacitance C1.
2. a high-power repetition pulse power power-supply is characterized in that, this power supply comprises charge power supply, energy capacitance set, residual voltage processing branch road and energy feedback branch road at least;
Wherein, energy capacitance set comprises main capacitance C1 and the secondary capacitor C 2 that is connected in series, and both capacitances are identical, opposite polarity directions; Energy feedback branch road and energy capacitance set are connected in parallel, and the negative pole of the secondary capacitor C 2 of the current direction of this branch road that only allows to flow through; Residual voltage is processed branch circuit parallel connection at the two ends of secondary capacitor C 2, lets out the residual voltage that can eliminate fully on the secondary capacitor C 2 by resistance; Charge power supply is connected in parallel on main capacitance C1 two ends, and charge power supply is only to main capacitance C1 positive charge;
Described residual voltage is processed branch road and is comprised mechanical switch and the resistance that is connected in series, and an end of mechanical switch is connected with the positive pole of secondary capacitor C 2, and the other end of mechanical switch links to each other with an end of resistance, and an other end of resistance links to each other with the negative pole of secondary capacitor C 2;
Described energy feedback branch road comprises thyristor Q2 and the inductance L 1 that is connected in series successively, and the negative electrode of thyristor Q2 connects the negative pole of secondary capacitor C 2, and thyristor Q2 positive pole connects an end of inductance L 1, and inductance L 1 other end is connected with the negative pole of main capacitance C1.
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| CN 201110376569 CN102412753B (en) | 2011-11-23 | 2011-11-23 | High-voltage and high-power repetitive pulse power supply |
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| CN 201110376569 CN102412753B (en) | 2011-11-23 | 2011-11-23 | High-voltage and high-power repetitive pulse power supply |
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| CN105207515B (en) * | 2015-09-16 | 2018-05-08 | 深圳市航天新源科技有限公司 | A kind of repetitive frequency pulsed power current source |
| CN105743176B (en) * | 2016-04-10 | 2018-03-09 | 王艳荣 | Control method of capacitor charging device |
| CN106655871A (en) * | 2016-12-27 | 2017-05-10 | 杭州天明电子有限公司 | Energy-saving type narrow-pulse high voltage power supply |
| CN106896332B (en) * | 2016-12-30 | 2020-08-14 | 西北核技术研究所 | Testing load and testing method for repetition frequency capacitor charging power supply |
| CN113078840B (en) * | 2021-03-16 | 2022-04-12 | 华中科技大学 | Power supply circuit, repeated flat-top pulse high-intensity magnetic field generating device and control method thereof |
| CN113311351B (en) * | 2021-07-29 | 2021-10-29 | 成都歆慎科技有限公司 | Charging power supply test load and system |
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| US5109186A (en) * | 1990-07-20 | 1992-04-28 | Delta Electronic Industrial Co., Ltd. | PWM step-down MOSFET regulator |
| US5495149A (en) * | 1993-05-20 | 1996-02-27 | Matsushita Electric Works, Ltd. | Power supply |
| CN2500026Y (en) * | 2001-09-13 | 2002-07-10 | 中国工程物理研究院环保工程研究中心 | High-voltage pulse power supply device for pulse corona plasma flue gas desulfurization |
| CN101075792A (en) * | 2007-06-07 | 2007-11-21 | 南京苏特电气有限公司 | Series resonator for pulse power supply |
| CN102158088B (en) * | 2011-01-17 | 2014-04-23 | 西安交通大学 | All-solid-state repetitive-frequency nanosecond pulse source |
| CN202455288U (en) * | 2011-11-23 | 2012-09-26 | 华中科技大学 | High voltage big power repetition pulse power source |
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