CN101841253A - Pulsed-liquid phase discharge system based on multiplex IGCT parallel connection - Google Patents
Pulsed-liquid phase discharge system based on multiplex IGCT parallel connection Download PDFInfo
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- CN101841253A CN101841253A CN 201010144799 CN201010144799A CN101841253A CN 101841253 A CN101841253 A CN 101841253A CN 201010144799 CN201010144799 CN 201010144799 CN 201010144799 A CN201010144799 A CN 201010144799A CN 101841253 A CN101841253 A CN 101841253A
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- 239000007791 liquid phase Substances 0.000 title claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 239000007787 solid Substances 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000001960 triggered effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 1
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Abstract
The invention discloses a pulsed-liquid phase discharge system based on multi-path IGCT parallel connection, belonging to the pulse power source field. The system can be composed of two or more paths of parallel discharge circuits; each path of elements contain a current-limiting inductor, a storage capacitor, freewheeling diodes, IGCT switches and a pulse transmission line which are connected in turn; the current-limiting inductor is in serial connection in the charge circuit of the storage capacitor; the storage capacitor can be composed of one or more of low sensitivity solid pulse storage capacitors which are connected in parallel; two ends of the storage capacitor are in parallel connection with freewheeling diodes; each path of IGCT switches can be composed of one or more of IGCTs which are connected in series and triggered by an external trigger circuit, the output ends are separately connected with the high-voltage input end of the pulse transmission line and in the circuit, and the low-voltage input ends of the pulse transmission line are successively connected with the low-voltage ends of the storage capacitors in other circuits in a staggered manner. The system can effectively solve the synchronization problem of switches and realize large electric current discharging up to hundreds of kiloamperes.
Description
Technical field
The present invention relates to High pulse power technology, be meant a kind of pulsed-liquid phase discharge system of multiplex IGCT parallel connection especially, belong to pulsed-power industry.
Background technology
At present, the liquid phase pulsed plasma power supply that marine seismic prospectiong is used generally adopts capacitance energy storage, and (as IGCT) discharges by high-power semiconductor switch, has solved to use arrester switch to produce the problem that pulse output is unstable and switch life is short.Under marine environment, liquid phase pulsed plasma power work will improve output power of power supply below 10kV, and feasible approach is to improve discharging current.At present, therefore the anti-flow restriction of semiconductor switch device uses single switch or unitary series of operations switch can't finish the heavy-current discharge of hundreds of kA generally at tens kA.
Summary of the invention
The invention provides a kind of pulsed-liquid phase discharge system of multiplex IGCT parallel connection.Adopt a plurality of switch in parallel to use and to solve the problem of heavy-current discharge, and reached synchronous triggering switch and evenly shunting.
A kind of pulsed-liquid phase discharge system of multiplex IGCT parallel connection, comprise at least two discharge loops parallel with one another, current-limiting inductance, storage capacitor, fly-wheel diode, IGCT switch link to each other successively with pulse transmission line in each loop, wherein the high voltage input terminal of the pulse transmission line in each loop is received the output of the IGCT switch in its loop, place, and the low pressure input of pulse transmission line is cross-linked the storage capacitor low-pressure end in other loops.
The current-limiting inductance on described each road has two, can be air core inductor, also can contain magnetic core, is connected on the high voltage input terminal and the low pressure input of storage capacitor respectively, plays the effect of current limliting.
The storage capacitor on described each road can be made of the connection in series-parallel of one or more low sense solid state pulse storage capacitor.
The fly-wheel diode on described each road can be made up of or many diodes are composed in series a diode, is connected in parallel on the two ends of storage capacitor, plays the effect of eliminating current oscillation in the discharge loop.
The IGCT switch on described each road can be composed in series by an IGCT or many IGCT, triggers by the external trigger circuit.
The pulse transmission line on described each road is high-pressure coaxial cable or other high pressure cables, and the high voltage input terminal of pulse transmission line is received the IGCT output in this loop respectively, and the low pressure input is cross-linked the low-pressure end of storage capacitor in other loops successively.
The IGCT anode on described each road and the high-pressure side of storage capacitor, and the negative electrode of fly-wheel diode links to each other the output of generation positive polarity high-voltage pulse.
The IGCT negative electrode on described each road and the high-pressure side of storage capacitor, and the anode of fly-wheel diode links to each other the output of generation negative polarity high-voltage pulse.
The pulsed-liquid phase discharge system course of work of the present invention is as follows: high voltage direct current is charged to storage capacitor by current-limiting inductance, after charging is finished, and a plurality of IGCT switches of external trigger circuit synchronous triggering parallel connection, big electric current is loaded into load by pulse transmission line.
The a plurality of IGCT switch in parallel of employing of the present invention by being cross-linked of pulse transmission line low-pressure end, make the input impedance of each road transmission line equate, play the effect that each road IGCT switch is evenly shunted.
Description of drawings
Fig. 1 produces the circuit diagram of positive high voltage pulse output for one embodiment of the present invention;
Fig. 2 produces the circuit diagram of negative high voltage pulse output for another embodiment of the present invention.
Embodiment
Fig. 1 produces the circuit diagram of positive high voltage pulse output for the present invention.As shown in the figure, a kind of pulsed-liquid phase discharge system of multiplex IGCT parallel connection, this system can be made of two-way or the discharge loop parallel connection more than the two-way.The components and parts on each road comprise that current-limiting inductance 1, storage capacitor 2, fly-wheel diode 3, IGCT switch 4 and pulse transmission line 5 link to each other successively.The current-limiting inductance 1 on each road has two, is connected on the high voltage input terminal and the low pressure input of storage capacitor 2 respectively, plays the effect of current limliting, can be air core inductor, also can contain magnetic core.Storage capacitor 2 can be made of the connection in series-parallel of one or more low sense solid state pulse storage capacitor.The two ends of fly-wheel diode 3 storage capacitors 2 in parallel can be composed in series by a diode or many diodes.The IGCT switch 4 on each road is connected between pulsed capacitance 2 and the pulse transmission line 5, can be composed in series by an IGCT or many IGCT, triggers by the external trigger circuit.The high-pressure side of the anode of IGCT switch 4 and storage capacitor 2, and the negative electrode of fly-wheel diode 3 links to each other.The pulse transmission line 5 on each road is a high-pressure coaxial cable, and the high voltage input terminal of pulse transmission line 5 is received the negative electrode of this loop IGCT switch 4 respectively, and the low pressure input is cross-linked the low-pressure end of the storage capacitor 2 in other loops successively.
In the present embodiment, Fig. 1 is for producing the circuit diagram of positive high voltage pulse output.As shown in the figure, the pulsed-liquid phase discharge system of controlling by two-way IGCT switch in parallel.High voltage direct current is charged by the storage capacitor 2 of 1 pair of a pair of parallel connection of 4 current-limiting inductances.The current-limiting inductance 1 on each road has two, is connected on the high voltage input terminal and the low pressure input of storage capacitor 2 respectively, plays the effect of current limliting.Storage capacitor 2 can be made of the connection in series-parallel of one or more low sense solid state pulse storage capacitor.After charging is finished, two IGCT switches 4 of external trigger circuit synchronous triggering parallel connection, big electric current is loaded into load by pulse transmission line 5.Wherein, the effect of eliminating current oscillation in the discharge loop is played at the two ends of fly-wheel diode 3 storage capacitors 2 in parallel.The anode of the IGCT switch 4 on each road and the high-pressure side of storage capacitor 2, and the negative electrode of fly-wheel diode 3 links to each other.The pulse transmission line 5 on each road is a high-pressure coaxial cable, and the high voltage input terminal of pulse transmission line 5 is received the negative electrode of this loop IGCT switch 4 respectively, and the low pressure input is cross-linked the low-pressure end of storage capacitor 2 in another loop.
Fig. 2 produces the circuit diagram of negative high voltage pulse output for the present invention, and basic principle is identical with Fig. 1, and main difference is: the negative electrode of the IGCT switch 4 on each road and the high-pressure side of storage capacitor 2, and the anode of fly-wheel diode 3 links to each other.
Claims (7)
1. the pulsed-liquid phase discharge system of a multiplex IGCT parallel connection, it is characterized in that, comprise at least two discharge loops parallel with one another, current-limiting inductance, storage capacitor, fly-wheel diode, IGCT switch link to each other successively with pulse transmission line in each loop, wherein the high voltage input terminal of the pulse transmission line in each loop is received the output of the IGCT switch in its loop, place, and the low pressure input of pulse transmission line is cross-linked the storage capacitor low-pressure end in other loops.
2. pulsed-liquid phase discharge system as claimed in claim 1 is characterized in that, the current-limiting inductance in each loop has two, is connected on the high voltage input terminal and the low pressure input of storage capacitor respectively.
3. pulsed-liquid phase discharge system as claimed in claim 1 is characterized in that, described storage capacitor is made of the connection in series-parallel of one or more low sense solid state pulse storage capacitor.
4. pulsed-liquid phase discharge system as claimed in claim 1 is characterized in that, described fly-wheel diode is made up of a diode or many diodes are composed in series, and is connected in parallel on the two ends of storage capacitor.
5. pulsed-liquid phase discharge system as claimed in claim 1 is characterized in that, described IGCT switch is composed in series by an IGCT or many IGCT, triggers by the external trigger circuit.
6. pulsed-liquid phase discharge system as claimed in claim 1 is characterized in that, when being output as the positive polarity high-voltage pulse, the anode of IGCT switch connects the high-pressure side of storage capacitor and the negative electrode of fly-wheel diode in each loop.
7. pulsed-liquid phase discharge system as claimed in claim 1 is characterized in that, when being output as the negative polarity high-voltage pulse, the negative electrode of IGCT switch connects the high-pressure side of storage capacitor and the anode of fly-wheel diode in each loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010144799 CN101841253A (en) | 2010-04-12 | 2010-04-12 | Pulsed-liquid phase discharge system based on multiplex IGCT parallel connection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010144799 CN101841253A (en) | 2010-04-12 | 2010-04-12 | Pulsed-liquid phase discharge system based on multiplex IGCT parallel connection |
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| CN101841253A true CN101841253A (en) | 2010-09-22 |
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| CN 201010144799 Pending CN101841253A (en) | 2010-04-12 | 2010-04-12 | Pulsed-liquid phase discharge system based on multiplex IGCT parallel connection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594195A (en) * | 2012-03-26 | 2012-07-18 | 清华大学 | Inductance energy storage type pulse power supply used for electromagnetic emission |
| CN102983774A (en) * | 2012-12-17 | 2013-03-20 | 浙江大学 | Liquid phase pulse discharge system based on multi-way switch delay output |
| CN105024584A (en) * | 2015-07-15 | 2015-11-04 | 浙江大学 | High-voltage pulse generation device for strong charging of fine particles |
| CN109861578A (en) * | 2018-12-17 | 2019-06-07 | 浙江大维高新技术股份有限公司 | A kind of corona discharge pulse plasma electrical source |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6244077A (en) * | 1985-08-22 | 1987-02-26 | Fuji Electric Co Ltd | Power source for repetitive discharge |
| JPH07122979A (en) * | 1993-10-25 | 1995-05-12 | Meidensha Corp | Pulse power source |
-
2010
- 2010-04-12 CN CN 201010144799 patent/CN101841253A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6244077A (en) * | 1985-08-22 | 1987-02-26 | Fuji Electric Co Ltd | Power source for repetitive discharge |
| JPH07122979A (en) * | 1993-10-25 | 1995-05-12 | Meidensha Corp | Pulse power source |
Non-Patent Citations (1)
| Title |
|---|
| 《科技导报》 20071030 裴彦良等 脉冲等离子体震源及其在海洋地震勘探方面的应用 第25卷, 第19期 2 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594195A (en) * | 2012-03-26 | 2012-07-18 | 清华大学 | Inductance energy storage type pulse power supply used for electromagnetic emission |
| CN102594195B (en) * | 2012-03-26 | 2014-03-12 | 清华大学 | Inductance energy storage type pulse power supply used for electromagnetic emission |
| CN102983774A (en) * | 2012-12-17 | 2013-03-20 | 浙江大学 | Liquid phase pulse discharge system based on multi-way switch delay output |
| WO2014094515A1 (en) * | 2012-12-17 | 2014-06-26 | 浙江大学 | Discharge system for liquid phase pulses output in time-delay manner based on multiple switches |
| CN102983774B (en) * | 2012-12-17 | 2015-04-22 | 浙江大学 | Liquid phase pulse discharge system based on multi-way switch delay output |
| CN105024584A (en) * | 2015-07-15 | 2015-11-04 | 浙江大学 | High-voltage pulse generation device for strong charging of fine particles |
| CN109861578A (en) * | 2018-12-17 | 2019-06-07 | 浙江大维高新技术股份有限公司 | A kind of corona discharge pulse plasma electrical source |
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Application publication date: 20100922 |