CN1009604B - Inductive type large power high voltage pulse modulator - Google Patents
Inductive type large power high voltage pulse modulatorInfo
- Publication number
- CN1009604B CN1009604B CN 86100299 CN86100299A CN1009604B CN 1009604 B CN1009604 B CN 1009604B CN 86100299 CN86100299 CN 86100299 CN 86100299 A CN86100299 A CN 86100299A CN 1009604 B CN1009604 B CN 1009604B
- Authority
- CN
- China
- Prior art keywords
- voltage pulse
- power
- high voltage
- voltage
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Generation Of Surge Voltage And Current (AREA)
- Particle Accelerators (AREA)
Abstract
The present invention belongs to a technique integrating energy accumulation, switching, pulse power modulation, etc. The present invention utilizes an inductive accumulator as a primary power source for energy accumulation, fast switches a switching circuit through a noncontact high-power and high-voltage DC, utilizes a high-energy nonlinear resistor to carry out energy conversion and generates high-power and high-voltage pulses meeting definite technical requirements. The present invention has the advantages of good high-voltage pulse waveform, small shock load to an electric network, low cost, safe and reliable work, etc.
Description
The invention belongs to energy storage, switch and pulse power modulation technique.
Known large power high voltage pulse modulation technique, the general capacitor that uses perhaps directly utilizes utility network through high-voltage rectifying as elementary accumulation power supply, is aided with simulated line and feedback adjusting link, through ovennodulation, obtain to meet the high-voltage pulse output of certain waveform requirement.The former, because the capacitor energy storage density is low, capacity usage ratio is poor, volume is big, cost height, the device that the capacity that is only applicable to is less; And the latter, because pulse power is directly taken from utility network, impact load is big, generally also need compensate, to having relatively high expectations of area power grid, initial outlay is bigger.In order to overcome the defective of above-mentioned two kinds of methods, we have taked new technological approaches.
The present invention utilizes inductive energy storage as elementary accumulation power supply, through contactless high-power high voltage DC quick switch commutation circuit, utilizes high-energy non-linear resistance to carry out power conversion, is created in the large power high voltage pulse that has the landing of requirement roof pressure in the regulation pulsewidth.
About inductive energy storage, because the energy storage density height, energy storage capacity is big, and the cost of unit energy storage is low, and advantages such as long service life are occupied considerable position in energy storage technology.But because the restriction of energy conversion technique and device is used also not general now.In pulse modulation technique, only have as impulse current generator, also not as the precedent of pulse voltage modulator.
High-energy non-linear resistance mainly is the high energy ZnO nonlinear resistance at present, is the novel electrotechnical elements that closely occurs during the last ten years and develop rapidly.But mainly in electric power system, be used as the overvoltage protection of arrester without gaps and circuit.In recent years, field suppression protection and the rotor over-voltage protection that is used for large-size machine also obtained progress.We are owing to requirements of one's work, once to the energy of nonlinear resistance as inductive energy storage
The amount conversion is analyzed and researched, proved in the controlled nuclear fusion engineering, to be used as the adiabatic compression test, and be a kind of desirable inverting element.
And contactless high-power high voltage dc switch since its be swift in motion, accurately, reliably, the life-span is long, it is simple to safeguard, is a kind of desirable switching device.At present only there is the development of minority developed country to obtain progress.It has important effect in the power conversion of inductive energy storage.
The present invention, above three kinds of advanced technologies are combined, give full play to their characteristics separately, realized the power conversion of inductive energy storage and the modulation of high-voltage pulse, constituted and shown unique characteristics, with the large power high voltage pulse modulator of existing two kinds of method fundamental differences.
Through retrieval to up to now patent documentation, and relevant academic documents consult domestic and international at present design or the device that does not still have same principle.
The present invention is the needs according to assistant heating test in the controlled nuclear fusion engineering of this institute, use for reference and use this institute, since this seminar is long-term at inductive energy storage, the high-power high voltage dc switch, the achievement in research of aspects such as nonlinear resistance and experience, proposed the conceptual design of inductive type large power high voltage pulse modulator, and carried out original reason test and critical component test, all succeedd.Our purpose is to reduce significantly pulse power to the district power transformation impact of local power network in one's power, reduces the cost of large power high voltage pulse power supply.
Basic principle of the present invention and primary structure be as shown in Figure 1: by ac rectifying power source 1; direct current output switch 2; fly-wheel diode 3, energy storage inductor 4, main switch 5; forced commutation loop 6; negative peak blocking-up 7, nonlinear resistance 8, jacking or feedback adjusting link 9; load or pseudo-load 10, and system controlled by computer and protection system 11 are formed.
The course of work is as follows:
Ac rectifying power source 1 is by direct current output switch 2 and main switch 5, to energy storage inductor 4 chargings.After electric current gave time value in advance, direct current output switch 2 turn-offed, and the electric current in the inductance is by fly-wheel diode 3 afterflows.Meanwhile, use the forced commutation principle, main switch 5 is cut-off, force electric current to flow to nonlinear resistance 8 and load 9, form high-voltage pulse through negative peak blocking-up 7.After reaching predetermined pulse width, main switch 5 closures, high-voltage pulse excises immediately, thereby obtains a large power high voltage pulse with the landing of requirement roof pressure in load.Typical waveform as shown in Figure 2.Among the figure:
U, i are the voltage and the current waveform of energy storage inductor;
U, i are the voltage and the current waveform of nonlinear resistance
U, i are voltage and the current waveform (being resistive load herein) in the load
T is system's charging interval
t
dBe system recovery time
t
mWidth for high-voltage pulse
U
mAmplitude for high-voltage pulse
U
OVD for ac rectifying power source
△
uRoof pressure landing for high-voltage pulse
I
oCharging current value for energy storage inductor
Among the present invention, main switch is a very important Primary Component, requires closure and cut-offs all quick, accurately, reliable.Have only contactless high voltage direct current high-speed switch to be competent at.As shown in Figure 1, main switch 5 by saturable reactor and many thyristors through all being in series after the pressure measure.Forced commutation loop 6 is mainly by change of current electric capacity 14, and 15,16,17,18 formations of four high voltage direct current quick-make switches that are the bridge-type connection.The forced oscillation that utilizes inductance and capacitances in series and DC power supply to connect, the unilateral conduction of switch element, and the swinging to repeatedly of bridge type return.After the several times circulation, the voltage on the change of current electric capacity 14 rises one by one, till reaching needed value.Thereby for the operation first of whole modulator provides condition.And in case after the operation first, above-mentioned vibration charging process promptly need not repeat again.The advantage of this circuit has been both to omit a cover to the high-voltage charging machine that change of current electric capacity charges in advance, makes the high-repetition-rate operation of modulator become possibility again.But and two adjacent brachium pontis of bridge type return still double as stand-by protection crow bar use, given full play to the function of each element, improved the device reliability of operation.
Direct current output switch 2 also is a contactless direct current high-voltage quick switch, and just operating voltage is lower.During the high-repetition-rate operation, it can keep conducting always, need not to turn-off, so that continuously to the inductance makeup energy.At this moment, the current waveform in the energy storage inductor is shown in the thick dashed line in the accompanying drawing 2.
As for the forced commutation technology, or be called artificial zero passage technology, known by professional.
In addition, center of the present invention control comprises a microcomputer, and corresponding photoelectricity coupling interface, driver circuit and triggering circuit etc.Protection part is except general GPF (General Protection False, and high pressure overvoltage protection 12 is to adopt high voltage varistor to detect the overvoltage signal, and the high pressure overload protection is to utilize load plate current or cloudy stream to detect 13 to detect over-current signals, starts the main switch crow bar of holding concurrently, instantaneous excision high pressure.Simultaneously, owing to certain principles of the present invention and structure have self-limiting with from the pressure limiting function, in conjunction with the active safeguard measure, for whole power supply provides very reliable protection.
The present invention is better than the waveform quality of the high-voltage pulse of the high voltage pulse modulator of aforementioned two kinds of modes, and is little to the impact load of electrical network, itself has from pressure limiting the self-limiting function.Safe and reliable, cost only is 1/2～1/4 of the first two kind, and when pulse power heals when big, economy more for obviously, has overcome the inherent shortcoming of above-mentioned two kinds of methods, is a kind of desirable large power high voltage pulse modulator.Poly-at controlled nuclear
But become all extensive uses in the electric physical units such as experimental rig, high-energy particle accelerator.In highpowerpulse modulation techniques such as radar, also has potential using value.
Implement the present invention, need to carry out designing and calculating by described principle in conjunction with the specification requirement of load to high-voltage pulse.Critical piece should determine technical parameter by result of calculation.Wherein:
Ac rectifying power source 1 can be not control rectifier of general three-phase alternating current, and capacity can be by the average charge power and the maximum charging current design of inductance.
Direct current output switch 2 is contactless high voltage direct current high-speed switch with main switch 5, and ideal with thyristor switch, the ionic tube switch of capacity suitable also can use.
Forced commutation loop 6 becomes the controllable high-voltage Closing Switch with unilateral conduction of bridge-type and change of current electric capacity etc. to form by four All-China Federation of Taiwan Compatriots.Switch can be made of thyristor or ionic tube or gap.Change of current electric capacity must series connection-high-tension fuse, with the protection switch backfire or the short trouble when restriking.
Energy storage inductor 4 can be various forms of inductance coils as the primary source of device, as normal temperature or low temperature, or superconducting coil; Hollow or iron-core coil; Annular screwed pipe or cake formula solenoid or the like.Wherein with superconduction annular magnetic plug reducing the energy loss of itself, dwindle power supply capacity, and it is ideal to form the magnetic field configuration aspect of a sealing; But normal temperature hollow solenoid coil is more easily processed, so answer conditional decisions such as combination technology requirement and processing, operation to accept or reject.But the energy storage capacity of any coil, magnetic flux all should satisfy the requirement of high-voltage pulse.
Negative peak blocking-up 7 is used to isolate any reverse voltage that imposes on load and the nonlinear resistance, and the forward position of control high-voltage pulse, also is the high pressure controllable closing switch with unilateral conduction, can be made of thyristor, ionic tube or gap.
Nonlinear resistance 8 now adopts the high energy ZnO nonlinear resistor, and we utilize it to have the very smooth voltage-current characteristic and the excellent properties of high-energy-density thereof in broad electric current constant interval, and realization is bordering on the formation of the high-voltage pulse of constant voltage.But should determine the rated voltage of element by the specific requirement of modulator, discharge capacity, energy capacity etc., and must adopt certain cooling measure by average energy consumption.
Jacking apparatus or feedback adjusting link 9 have utilized the characteristic of self compensation performance or feedback regulation that the roof pressure landing of high-voltage pulse is further reduced, and decide what to use as required.
System controlled by computer and protection system 11 provide a basic sequencing control and have interrupted defence program, when arbitrary fault takes place; enter defence program immediately: stop running; start crow bar, cut off all alternating current-direct current high voltage sourcies, all energy-storage travelling wave tubes release energy.Signal is shown to the kind that is out of order so that maintenance.
The reliability service of whole device depends on rational design, qualified device, meticulous processing and Installation and Debugging.To note the dielectric voltage withstand of high voltage device especially, the isolation between the high and low pressure circuit, shielding; The reasonable Arrangement of earth connection; The heat radiation of power component and cooling; The interference protection measure of control system etc.
Claims (2)
1, a kind of large power high voltage pulse modulator, it is characterized in that adopting inductive energy storage device (4) as elementary accumulation power supply, adopt the nonlinear resistance (8) of high-energy-density to carry out power conversion, adopt the forced commutation loop of main switch (5) and by capacitor (14) be four high voltage direct current Closing Switch (15) of bridge-type connection, (16), (17), (18) high-power high voltage DC quick switch (2) and (5) commutation circuit of being formed.
2, large power high voltage pulse modulator as claimed in claim 1 is characterized in that high-voltage pulse output has overvoltage and overcurrent protection, main switch (5) double as master crow bar, the standby crow bar of forced commutation (6) double as.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100299 CN1009604B (en) | 1986-01-16 | 1986-01-16 | Inductive type large power high voltage pulse modulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100299 CN1009604B (en) | 1986-01-16 | 1986-01-16 | Inductive type large power high voltage pulse modulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86100299A CN86100299A (en) | 1987-07-22 |
| CN1009604B true CN1009604B (en) | 1990-09-12 |
Family
ID=4800955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86100299 Expired CN1009604B (en) | 1986-01-16 | 1986-01-16 | Inductive type large power high voltage pulse modulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1009604B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5941669B2 (en) * | 2011-12-20 | 2016-06-29 | 東芝三菱電機産業システム株式会社 | Impulse voltage generator |
| CN107818951B (en) * | 2017-10-12 | 2019-08-09 | 南京帕尔斯电气科技有限公司 | Band heat management high-voltage pulse thyristor switch device |
-
1986
- 1986-01-16 CN CN 86100299 patent/CN1009604B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86100299A (en) | 1987-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11295912B2 (en) | Arrangement, system, and method of interrupting current | |
| Wu et al. | Investigation of an active current injection DC circuit breaker based on a magnetic induction current commutation module | |
| US20120187089A1 (en) | High-voltage, super-voltage and heavy current breaker | |
| CN2847637Y (en) | Device for suppressing transformer neutral point DC current by capacitance method | |
| CN109342910B (en) | Full-electric partial discharge detection device and detection method | |
| CN110556807B (en) | DC current limiter and application thereof | |
| CN103066582B (en) | A kind of modularization multi-level converter method of overvoltage protection and protector thereof | |
| Zhang et al. | Resistance varying characteristics of DC superconducting fault current limiter in MTDC system | |
| CN202712844U (en) | Device for suppressing transformer neutral point DC current by resistance method, with bypass protection function | |
| CN1009604B (en) | Inductive type large power high voltage pulse modulator | |
| Agrawal et al. | A study of single-phase to three-phase cycloconverters using PSPICE | |
| CN115833059A (en) | Low-voltage inductive coupling type hybrid direct-current circuit breaker topology and control method | |
| CN113285433B (en) | Short circuit current peak-limiting current-limiting system | |
| Sen et al. | Improving DC circuit breaker performance through an alternate commutating circuit | |
| Takimoto et al. | Experimental verification of the large-current turn-off of series-connected IEGTs for hybrid DC circuit breakers | |
| CN2674738Y (en) | Fault current limiter | |
| Vodyakho et al. | Design of a solid state fault isolation device for implementation in power electronics based distribution systems | |
| Yu et al. | DC Side Over-Voltage Characteristics Analysis of AC/DC Hybrid Distribution Power System | |
| CN213937444U (en) | Single crystal brake pipe capacitor switching circuit | |
| CN202353227U (en) | Alternate charging starting circuit for chain circuit static synchronous compensator | |
| Arsoy | Electromagnetic transient and dynamic modeling and simulation of a StatCom-SMES compensator in power systems | |
| Wang et al. | Hybrid DC Circuit Breaker with Integrated Self-charging and Current Limiting | |
| Mingxing et al. | Study on submarine cable opening overvoltage modeling and its suppression technology | |
| Thoren | Reduction of switching overvoltages in EHV and UHV systems | |
| CN210273504U (en) | Thyristor logic control regulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |