CN103346757A - Device and method for forming high-voltage square wave - Google Patents
Device and method for forming high-voltage square wave Download PDFInfo
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- CN103346757A CN103346757A CN2013102108726A CN201310210872A CN103346757A CN 103346757 A CN103346757 A CN 103346757A CN 2013102108726 A CN2013102108726 A CN 2013102108726A CN 201310210872 A CN201310210872 A CN 201310210872A CN 103346757 A CN103346757 A CN 103346757A
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Abstract
The invention discloses a device and method for forming a high-voltage square wave and relates to the field of high tension electricity. The device for forming the high-voltage square wave comprises a pulse forming circuit and a delay cut-off circuit. The pulse forming circuit is used for forming a step wave signal and transmitting the step wave signal to the delay cut-off circuit. The delay cut-off circuit is used for cutting off the step wave signal, so that the high-voltage square wave is obtained. According to the scheme of forming the high-voltage square wave, the step wave signal is formed through the pulse forming circuit, the delay cut-off circuit is used for cutting off the step wave signal, so that the high-voltage square wave is obtained, and the device and method is simple and easy to achieve.
Description
Technical field
The present invention relates to the high-tension electricity field, particularly the adjustable high-voltage square-wave of a kind of fast forward position, wide pulse width and pulsewidth forms apparatus and method.
Background technology
What application was many at present is by adopting the pulse shaping line method to form high-voltage square-wave, for example folded by the string of multistage pulses formation line, realizes the output of high-voltage square-wave.
The pulse shaping line method is realized more complicated, the square wave amplitude voltage that produces is lower, and the square wave pulsewidth is limited, if increase the amplitude voltage of square wave, must adopt more voltage levels cable, if increase the pulsewidth of square wave, need to increase the length of cable, this can increase volume and the cost of square waveform apparatus for converting, reduces the performance of device.
Various drawbacks in view of existing high-voltage square-wave formation method exists are necessary to propose a kind of novel high-voltage square-wave formation method.
Summary of the invention
An embodiment of the invention technical problem to be solved is: proposes a kind of novel high-voltage square-wave and forms scheme, and the amplitude of this high-voltage square-wave and the convenient adjusting of pulsewidth.
An aspect of the embodiment of the invention provides a kind of high-voltage square-wave to form device, comprising: pulse shaping circuit and time-delay cut off circuit; Pulse shaping circuit is used to form step ripple signal, and outputs to the time-delay cut off circuit; The time-delay cut off circuit is used for step ripple signal cutout, in order to obtain high-voltage square-wave.
Pulse shaping circuit comprises: main capacitance, main switch, inductance and load; Main capacitance, main switch, inductance and load are connected successively and are formed a closed-loop path, the junction ground connection of main capacitance and load; When main capacitance is charged to certain voltage by main switch and inductance to load discharge, form step ripple signal.
The amplitude of regulating this step ripple signal by the charging voltage that changes main capacitance is so that the amplitude of corresponding adjusting high-voltage square-wave.
The time-delay cut off circuit comprises: differential circuit, delay circuit and cut off circuit; Differential circuit is used for acquisition pulse and forms circuit-formed step ripple signal, and forms differential signal; Delay circuit is used for according to the pulsewidth of high-voltage square-wave differential signal being delayed time; Cut off circuit is used for the triggering through the time-delay differential signal, with step ripple signal cutout, in order to obtain high-voltage square-wave.
Differential circuit comprises: differential capacitance and coaxial cable; Wherein, differential capacitance comprises: transmission line urceolus, transmission line inner core, the insulated nylon that is positioned on the transmission line urceolus overlap and are positioned at the disc electrode that insulated nylon puts; The end of disc electrode links to each other with the inner core of coaxial cable; When the step ripple signal of gathering when differential circuit discharges to the transmission line inner core, obtain a differential signal at the end of coaxial cable.
Cut off circuit comprises: insulated gate bipolar transistor IGBT drive circuit, IGBT, pulse transformer and three electrode switch; The time-delay differential signal triggers the IGBT drive circuit and drives IGBT, the output of IGBT offers pulse transformer, pulse transformer makes three electrode switch closures, in order to block the step ripple signal that pulse shaping circuit forms, forms high-voltage square-wave in the load of pulse shaping circuit.
Regulate the width of high-voltage square-wave by the delay time that changes delay circuit.
Another aspect of the embodiment of the invention provides a kind of high-voltage square-wave formation method, comprising: adopt pulse shaping circuit to form step ripple signal; Adopt the time-delay cut off circuit with step ripple signal cutout, in order to obtain high-voltage square-wave.
Pulse shaping circuit comprises: main capacitance, main switch, inductance and load; Main capacitance, main switch, inductance and load are connected successively and are formed a closed-loop path, the junction ground connection of main capacitance and load; When main capacitance is charged to certain voltage by main switch and inductance to load discharge, form step ripple signal; The amplitude of regulating this step ripple signal by the charging voltage that changes main capacitance is so that the amplitude of corresponding adjusting high-voltage square-wave.
The time-delay cut off circuit comprises: differential circuit, delay circuit and cut off circuit; The differential circuit acquisition pulse forms circuit-formed step ripple signal, and forms differential signal; Delay circuit is delayed time to differential signal according to the pulsewidth of high-voltage square-wave, regulates the width of high-voltage square-wave by the delay time that changes delay circuit; Cut off circuit is through the triggering of time-delay differential signal, with step ripple signal cutout, in order to obtain high-voltage square-wave.
The present invention proposes a kind of novel high-voltage square-wave and form scheme, form step ripple signal by pulse shaping circuit, utilize the time-delay cut off circuit with step ripple signal cutout, in order to obtain high-voltage square-wave, this scheme is simple, be easy to realize; And, the amplitude that can regulate high-voltage square-wave by the charging voltage that changes main capacitance in the pulse shaping circuit, can regulate the width of high-voltage square-wave by the delay time that changes the delay circuit in the time-delay cut off circuit, under the volume that does not increase the square waveform apparatus for converting and condition of cost, just can realize the adjusting of square wave parameter easily.
With reference to the detailed description of accompanying drawing to exemplary embodiment of the present invention, it is clear that further feature of the present invention and advantage thereof will become by following.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 forms the structural representation of an embodiment of device for high-voltage square-wave of the present invention.
Fig. 2 forms the structural representation of another embodiment of device for high-voltage square-wave of the present invention.
Fig. 3 is the structural representation of an embodiment of differential circuit of the present invention.
The output schematic diagram of differential circuit when Fig. 4 is 10kV for the charging voltage of main capacitance of the present invention.
The output schematic diagram that Fig. 5 is 700 o'clock cut off circuits for measuring resistance voltage divider voltage ratio of the present invention.
Fig. 6 is the schematic flow sheet of an embodiment of high-voltage square-wave formation method of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Below be illustrative to the description only actually of at least one exemplary embodiment, never as any restriction to the present invention and application or use.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Fig. 1 forms the structural representation of an embodiment of device for high-voltage square-wave of the present invention.
As shown in Figure 1, the high-voltage square-wave of this embodiment formation device comprises: pulse shaping circuit 10 and time-delay cut off circuit 20; Pulse shaping circuit 10 is used to form step ripple signal, and outputs to time-delay cut off circuit 20; Time-delay cut off circuit 20 is used for step ripple signal cutout, in order to obtain high-voltage square-wave.
Fig. 2 forms the structural representation of another embodiment of device for high-voltage square-wave of the present invention.
As shown in Figure 2, pulse shaping circuit 10 comprises: main capacitance, main switch, inductance L and load; Main capacitance, main switch, inductance and load are connected successively and are formed a closed-loop path, the junction ground connection of main capacitance and load.Wherein, main capacitance can be the capacitor of low inductance, high capacitance, and for example, the inductance of main capacitance can be lower than 20nH, and capacitance can be μ F magnitude, as 1 μ F.Main switch can be the pneumatic gas switch.Load can be a resistance.
When main capacitance is charged to certain voltage by main switch and inductance to load discharge, form step ripple signal.The charging voltage of main capacitance is the high voltage of kV magnitude, and for example, the charging voltage of main capacitance can be 10kV.The step ripple signal that step ripple signal is fast forward position, voltage is adjustable, for example, its rising edge can be less than 5ns, and amplitude can surpass 10kV, can reach 80kV as amplitude.In addition, the amplitude of regulating this step ripple signal by the charging voltage that changes main capacitance is so that the amplitude of corresponding adjusting high-voltage square-wave.As a rule, the charging voltage of main capacitance is more big, and the amplitude of step ripple signal is more big, and the amplitude of high-voltage square-wave is also corresponding more big.
Time-delay cut off circuit 20 can further segment on function, comprising: differential circuit, delay circuit and cut off circuit; Differential circuit is used for acquisition pulse and forms circuit-formed step ripple signal, and forms differential signal; Delay circuit is used for according to the pulsewidth of high-voltage square-wave differential signal being delayed time; Cut off circuit is used for the triggering through the time-delay differential signal, with step ripple signal cutout, in order to obtain high-voltage square-wave.
As shown in Figure 2, differential circuit wherein comprises: differential capacitance and coaxial cable.
Fig. 3 is the structural representation of an embodiment of differential circuit of the present invention.As shown in Figure 3, differential capacitance comprises: transmission line urceolus 1, transmission line inner core 2, be positioned at the insulated nylon cover 5 on the transmission line urceolus 1 and be positioned at disc electrode 3 on the insulated nylon cover 5, can also comprise that one is positioned at the stainless steel base 4 that insulated nylon overlaps 5 bottoms.The end of disc electrode 3 links to each other with the inner core of coaxial cable 6, and the wave impedance of coaxial cable 6 inner cores for example can be 50 Ω.The screen of coaxial cable 6 can link to each other with transmission line urceolus 1.When the step ripple signal of gathering when differential circuit discharges to the transmission line inner core, obtain a differential signal at the end of coaxial cable.
As shown in Figure 2, cut off circuit wherein comprises: the IGBT(insulated gate bipolar transistor) drive circuit, IGBT, pulse transformer T and three electrode switch G.Wherein, three electrode switch G trigger pin type three electrode switch.
The time-delay differential signal triggers the IGBT drive circuit and drives IGBT, the output of IGBT offers pulse transformer T, pulse transformer T makes three electrode switch G closures, in order to block the step ripple signal that pulse shaping circuit forms, forms high-voltage square-wave in the load of pulse shaping circuit.
Wherein, the width of high-voltage square-wave can be regulated, and can regulate the width of high-voltage square-wave by the delay time that changes delay circuit.Generally, the delay time of delay circuit is more long, and the width of high-voltage square-wave is more big.
As shown in Figure 2, cut off circuit wherein can also further arrange rectification circuit between IGBT and pulse transformer T, is used for alternating current is converted to direct current.
The novel high-pressure square waveform apparatus for converting that above-described embodiment proposes forms step ripple signal by pulse shaping circuit, utilizes the time-delay cut off circuit with step ripple signal cutout, in order to obtain high-voltage square-wave, this scheme is simple, be easy to realize.And, the amplitude that can regulate high-voltage square-wave by the charging voltage that changes main capacitance in the pulse shaping circuit, can regulate the width of high-voltage square-wave by the delay time that changes the delay circuit in the time-delay cut off circuit, under the volume that does not increase the square waveform apparatus for converting and condition of cost, just can realize the adjusting of square wave parameter easily.
The output schematic diagram of differential circuit when Fig. 4 is 10kV for the charging voltage of main capacitance.Fig. 5 is the output schematic diagram of 700 o'clock cut off circuits for measuring resistance voltage divider voltage ratio, as shown in Figure 5, and the high-voltage square-wave about pulsewidth 10 μ s of cut off circuit output.
The high-voltage square-wave that the present invention generates can be used for voltage divider (as fast transient overvoltage VFTO measurement transducer) to be demarcated, and the fast forward position of high-voltage square-wave can be used for demarcating the high frequency response of voltage divider.
Fig. 6 is the schematic flow sheet of an embodiment of high-voltage square-wave formation method of the present invention.
As shown in Figure 6, the high-voltage square-wave formation method of this embodiment may further comprise the steps:
Wherein, as shown in Figure 2, pulse shaping circuit can comprise: main capacitance, main switch, inductance and load; Main capacitance, main switch, inductance and load are connected successively and are formed a closed-loop path, the junction ground connection of main capacitance and load.
When main capacitance is charged to certain voltage by main switch and inductance to load discharge, form step ripple signal.The amplitude of regulating this step ripple signal by the charging voltage that changes main capacitance is so that the amplitude of corresponding adjusting high-voltage square-wave.As a rule, the charging voltage of main capacitance is more big, and the amplitude of step ripple signal is more big, and the amplitude of high-voltage square-wave is also corresponding more big.
Wherein, the time-delay cut off circuit comprises: differential circuit, delay circuit and cut off circuit, the specific implementation of each several part can be with reference to shown in Figure 2.The differential circuit acquisition pulse forms circuit-formed step ripple signal, and forms differential signal; Delay circuit is delayed time to differential signal according to the pulsewidth of high-voltage square-wave, regulates the width of high-voltage square-wave by the delay time that changes delay circuit, and generally, the delay time of delay circuit is more long, and the width of high-voltage square-wave is more big; Cut off circuit is through the triggering of time-delay differential signal, with step ripple signal cutout, in order to obtain high-voltage square-wave.
As shown in Figure 2, differential circuit wherein comprises: differential capacitance and coaxial cable, the two is connected in series.When the step ripple signal of gathering when differential circuit discharges to the transmission line inner core, obtain a differential signal at the end of coaxial cable.
As shown in Figure 2, cut off circuit wherein comprises: IGBT drive circuit, IGBT, pulse transformer T and three electrode switch G.The time-delay differential signal triggers the IGBT drive circuit and drives IGBT, the output of IGBT offers pulse transformer, pulse transformer makes three electrode switch G closures, in order to block the step ripple signal that pulse shaping circuit forms, forms high-voltage square-wave in the load of pulse shaping circuit.
The novel high-pressure square wave method of formationing that above-described embodiment proposes forms step ripple signal by pulse shaping circuit, utilizes the time-delay cut off circuit with step ripple signal cutout, in order to obtain high-voltage square-wave, this scheme is simple, be easy to realization.And, the amplitude that can regulate high-voltage square-wave by the charging voltage that changes main capacitance in the pulse shaping circuit, can regulate the width of high-voltage square-wave by the delay time that changes the delay circuit in the time-delay cut off circuit, under the volume that does not increase the square waveform apparatus for converting and condition of cost, just can realize the adjusting of square wave parameter easily.
The all or part of step that one of ordinary skill in the art will appreciate that realization above-described embodiment can be finished by hardware, also can instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a high-voltage square-wave forms device, comprising:
Pulse shaping circuit and time-delay cut off circuit;
Pulse shaping circuit is used to form step ripple signal, and outputs to the time-delay cut off circuit;
The time-delay cut off circuit is used for step ripple signal cutout, in order to obtain high-voltage square-wave.
2. device according to claim 1 is characterized in that, pulse shaping circuit comprises: main capacitance, main switch, inductance and load; Main capacitance, main switch, inductance and load are connected successively and are formed a closed-loop path, the junction ground connection of main capacitance and load;
When main capacitance is charged to certain voltage by main switch and inductance to load discharge, form step ripple signal.
3. device according to claim 2 is characterized in that,
The amplitude of regulating this step ripple signal by the charging voltage that changes main capacitance is so that the amplitude of corresponding adjusting high-voltage square-wave.
4. device according to claim 1 is characterized in that, the time-delay cut off circuit comprises: differential circuit, delay circuit and cut off circuit;
Differential circuit is used for acquisition pulse and forms circuit-formed step ripple signal, and forms differential signal;
Delay circuit is used for according to the pulsewidth of high-voltage square-wave differential signal being delayed time;
Cut off circuit is used for the triggering through the time-delay differential signal, with step ripple signal cutout, in order to obtain high-voltage square-wave.
5. device according to claim 4 is characterized in that, differential circuit comprises: differential capacitance and coaxial cable;
Wherein, differential capacitance comprises: transmission line urceolus, transmission line inner core, the insulated nylon that is positioned on the transmission line urceolus overlap and are positioned at the disc electrode that insulated nylon puts;
The end of disc electrode links to each other with the inner core of coaxial cable;
When the step ripple signal of gathering when differential circuit discharges to the transmission line inner core, obtain a differential signal at the end of coaxial cable.
6. device according to claim 4 is characterized in that, cut off circuit comprises: insulated gate bipolar transistor IGBT drive circuit, IGBT, pulse transformer and three electrode switch;
The time-delay differential signal triggers the IGBT drive circuit and drives IGBT, the output of IGBT offers pulse transformer, pulse transformer makes three electrode switch closures, in order to block the step ripple signal that pulse shaping circuit forms, forms high-voltage square-wave in the load of pulse shaping circuit.
7. device according to claim 4 is characterized in that, regulates the width of high-voltage square-wave by the delay time that changes delay circuit.
8. high-voltage square-wave formation method comprises:
Adopt pulse shaping circuit to form step ripple signal;
Adopt the time-delay cut off circuit with step ripple signal cutout, in order to obtain high-voltage square-wave.
9. method according to claim 8 is characterized in that, pulse shaping circuit comprises: main capacitance, main switch, inductance and load; Main capacitance, main switch, inductance and load are connected successively and are formed a closed-loop path, the junction ground connection of main capacitance and load;
When main capacitance is charged to certain voltage by main switch and inductance to load discharge, form step ripple signal;
The amplitude of regulating this step ripple signal by the charging voltage that changes main capacitance is so that the amplitude of corresponding adjusting high-voltage square-wave.
10. method according to claim 8 is characterized in that, the time-delay cut off circuit comprises: differential circuit, delay circuit and cut off circuit;
The differential circuit acquisition pulse forms circuit-formed step ripple signal, and forms differential signal;
Delay circuit is delayed time to differential signal according to the pulsewidth of high-voltage square-wave, regulates the width of high-voltage square-wave by the delay time that changes delay circuit;
Cut off circuit is through the triggering of time-delay differential signal, with step ripple signal cutout, in order to obtain high-voltage square-wave.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684360A (en) * | 2013-12-24 | 2014-03-26 | 国家电网公司 | Implementing method of high-voltage square-wave generator |
| CN111697871A (en) * | 2020-04-29 | 2020-09-22 | 西北核技术研究院 | Output voltage adjusting method of Tesla transformer type pulse power source |
| CN112858810A (en) * | 2021-01-07 | 2021-05-28 | 国网陕西省电力公司电力科学研究院 | Transient radiation electric field simulation method, system, device, equipment and application |
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| WO2006004512A1 (en) * | 2004-07-02 | 2006-01-12 | Scandinova Systems Ab | Electrical power switching with efficient switch protection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103684360A (en) * | 2013-12-24 | 2014-03-26 | 国家电网公司 | Implementing method of high-voltage square-wave generator |
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| CN111697871A (en) * | 2020-04-29 | 2020-09-22 | 西北核技术研究院 | Output voltage adjusting method of Tesla transformer type pulse power source |
| CN112858810A (en) * | 2021-01-07 | 2021-05-28 | 国网陕西省电力公司电力科学研究院 | Transient radiation electric field simulation method, system, device, equipment and application |
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