CN111884486A - Low-impedance all-solid-state discharge module for high-transformation-ratio pulse transformer - Google Patents
Low-impedance all-solid-state discharge module for high-transformation-ratio pulse transformer Download PDFInfo
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- CN111884486A CN111884486A CN202010615048.9A CN202010615048A CN111884486A CN 111884486 A CN111884486 A CN 111884486A CN 202010615048 A CN202010615048 A CN 202010615048A CN 111884486 A CN111884486 A CN 111884486A
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- 238000007599 discharging Methods 0.000 claims abstract description 45
- 238000004146 energy storage Methods 0.000 claims abstract description 23
- 238000002955 isolation Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 7
- 238000000034 method Methods 0.000 claims 1
- 238000004904 shortening Methods 0.000 abstract description 3
- 208000028659 discharge Diseases 0.000 description 35
- 230000000630 rising effect Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 230000009466 transformation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 208000011726 slow pulse Diseases 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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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
- H02M1/00—Details of apparatus for conversion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
- H03K3/57—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a semiconductor device
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Conversion In General (AREA)
Abstract
The invention relates to a low-impedance all-solid-state discharge module for a high-transformation-ratio pulse transformer, which comprises a discharge unit, a power supply unit and a power supply unit, wherein the discharge unit comprises a charging isolation unit, an energy storage unit, an IGBT (insulated gate bipolar transistor) module and a follow current loop, and commercial power is fed into a low-voltage power supply module in a; the high voltage charges the energy storage unit through each charging isolation unit, and the energy storage unit is connected with the primary side of an external high-transformation-ratio pulse transformer through an IGBT module and a discharging joint to form a discharging loop; frequency signals are sent to each driving board through a signal board, and the connection and disconnection of each IGBT module are controlled; the invention comprises multiple paths of same independent discharge units as required, realizes the parallel charging and serial discharging of the multiple paths, effectively compresses the distributed inductance of a discharge loop through the reasonable space arrangement in a module and the connection of a flat cable, and greatly improves the di/dt of a discharge waveform, thereby shortening the rise time of the discharge waveform and finally achieving the purpose of improving the front edge of the discharge waveform of the modulator.
Description
Technical Field
The invention relates to the technical field of solid-state modulators, in particular to a low-impedance all-solid-state discharge module for a high-transformation-ratio pulse transformer.
Background
The pulse transformer is widely used in the technical field of high-power pulse modulators; the device has the functions of load impedance adjustment, primary and secondary voltage isolation, voltage rise, pulse polarity change and the like. With the situation that the output peak power of the pulse modulator is higher and the reliability requirement is higher, the transformation ratio requirement on the pulse transformer is higher and higher, and the transformation ratio requirement is changed from the traditional value of one to a few tens to the highest value of one to a few hundreds.
After the transformation ratio is increased, the corresponding preceding stage discharge module has two changes, namely, the discharge voltage can be reduced from thousands of volts to dozens of kilovolts to one kilovolt, so that the selection of power devices such as semiconductors is convenient; secondly, the impedance of the discharge loop is very small, generally less than 1 ohm.
In order to pursue faster pulse front and back edges, higher requirements are put forward on a primary discharge module of a high-transformation-ratio pulse transformer, and a common discharge module has large stray inductance of a discharge loop and slow pulse waveform front and back edges, so that the requirements cannot be met.
Disclosure of Invention
The low-impedance all-solid-state discharge module for the high-transformation-ratio pulse transformer, provided by the invention, has the characteristics of high di/dt of the leading edge of a discharge waveform, high modularization degree, low internal impedance of a discharge source and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a low-impedance all-solid-state discharge module for a high-transformation-ratio pulse transformer comprises a shell, wherein a discharge unit is arranged in the shell; the discharging unit comprises a charging isolation unit, an energy storage unit, an IGBT module and a follow current loop,
commercial power is sent into a low-voltage power supply module in the shell through the aerial plug, and the low-voltage power supply module generates positive and negative 15V for auxiliary power supply;
high voltage is sent into the shell through the connector, the energy storage unit is charged through each charging isolation unit, and the energy storage unit is connected with the primary side of an external high-transformation-ratio pulse transformer through the IGBT module and the discharging connector to form a discharging loop;
frequency signals are sent to each driving board through a signal board, and the connection and disconnection of each IGBT module are controlled;
the shell is internally provided with a protection board which is connected with each drive board and sends out the shell through an interface after gathering and processing each protection signal.
Furthermore, 6 independent discharging units are arranged in the shell, each discharging unit is provided with a charging isolation unit, an energy storage unit, an IGBT module and a follow current loop, and the discharging units are connected through a laminated busbar.
Furthermore, the driving plate is tightly installed on each IGBT module to control the on and off of the IGBT modules;
the driving plate is provided with an active clamping and short-circuit protection module;
the driving board sends the fault feedback signal to the protection board while controlling the IGBT module, and the protection board sends out the casing after gathering each way of feedback signal.
Furthermore, the shell comprises a front panel, a middle partition plate, an upper mounting plate, a lower mounting plate, a side panel, a rear panel and a middle water-cooling plate, which are tightly connected through screws to form a complete box body.
Furthermore, the 6-path discharge units are divided into an upper layer and a lower layer which are symmetrically distributed, and heating devices of the discharge units are coated with heat-conducting silicone grease and are tightly arranged at the upper end and the lower end of the water cooling plate.
Furthermore, the front panel of the shell is provided with a low-voltage power supply, a trigger indicator and a fault feedback indicator lamp.
Furthermore, the shell is divided into an upper part and a lower part by the water cooling plate, and the water inlet and the water outlet of the water cooling plate are connected through a quick connector.
Furthermore, a power supply, a high-voltage connector, each discharge connector and a high-voltage connector protective baffle are arranged on the rear panel of the shell.
According to the technical scheme, the low-impedance all-solid-state discharge module for the high-transformation-ratio pulse transformer can solve the problem of the rising rate of the front edge of the primary discharge waveform of the high-transformation-ratio pulse transformer. The discharging module charges the energy storage capacitor through the charging loop by direct-current high voltage, the external frequency signal controls the on and off of the IGBT module, and meanwhile the energy storage capacitor forms a discharging loop through the IGBT, the module inner loop and the primary side of the high-transformation-ratio pulse transformer. The invention is characterized in that the discharging module comprises a plurality of paths of same independent discharging units as required, and the discharging module realizes the parallel charging and serial discharging of the paths, and effectively compresses the distributed inductance of a discharging loop through the reasonable space layout in the module and the connection of a flat cable, thereby greatly improving the di/dt of a discharging waveform, shortening the rising time of the discharging waveform and finally achieving the purpose of improving the front edge of the discharging waveform of the modulator.
The low-impedance all-solid-state discharge module for the high-transformation-ratio pulse transformer has the following beneficial effects:
1. by utilizing the modularized design concept, multiple paths of same discharge units are compressed in a case with a proper space, and the heating devices of the discharge units are tightly installed on the water cooling plate, so that a single discharge module can work under higher repetition frequency and higher average power. When the conditions are appropriate, the repetition frequency of a single discharge module can reach k levels, and the average working power can reach over 25 kW.
2. The devices of the discharge unit are tightly installed and connected through the laminated busbar, so that the distributed inductance of a loop is reduced, the inductance of the whole loop is less than 0.5 muH, the impedance is less than 0.5 ohm, for a discharge module with the charging voltage of 1000V, the amplitude of pulse current output by the module can reach 2000A, the rising time of the leading edge can be less than 1 mus, and the module can be known as U/L from di/dt
di/dt is more than 2000A/mus, and the leading edge time of the discharge waveform is short. Finally, the discharge waveform leading edge of the high-ratio pulse transformer is improved.
3. The invention adopts the water cooling plate to dissipate heat, and the heating devices are arranged on the upper surface and the lower surface of the water cooling plate, so that the water cooling plate is more fully utilized, and meanwhile, the space in the shell is more reasonable and compact.
Drawings
FIG. 1 is a block diagram of the structural modules of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in fig. 1, the low-impedance all-solid-state discharge module for a high-transformation-ratio pulse transformer according to this embodiment includes a low-voltage power supply module, a signal board, a protection board, a charging isolation unit, an energy storage unit, a driving board, an IGBT module, a freewheeling circuit, and the like.
Specifically, the device comprises a shell, wherein a discharge unit is arranged in the shell;
the discharging unit comprises a charging isolation unit, an energy storage unit, an IGBT module and a follow current loop,
commercial power is sent into a low-voltage power supply module in the shell through the aerial plug, and the low-voltage power supply module generates positive and negative 15V for auxiliary power supply;
high voltage is sent into the shell through the connector, the energy storage unit is charged through each charging isolation unit, and the energy storage unit is connected with the primary side of an external high-transformation-ratio pulse transformer through the IGBT module and the discharging connector to form a discharging loop;
frequency signals are sent to each driving board through a signal board, and the connection and disconnection of each IGBT module are controlled;
the shell is internally provided with a protection board which is connected with each drive board and sends out the shell through an interface after gathering and processing each protection signal.
As shown in figure 1, commercial power is sent into a low-voltage power supply module in a shell through aviation plug, and the low-voltage power supply module generates positive and negative 15V for auxiliary power supply and mainly supplies power to a signal board, a protection board and a driving board.
High voltage is sent into the shell through the connector, the energy storage units are charged through the charging isolation units, and the energy storage units are connected with the primary side of the external high-voltage ratio transformer through the IGBT module and the discharging connector to form a discharging loop.
The shell comprises 6 independent discharging units, each unit is provided with a charging isolation unit, an energy storage unit, an IGBT module and a follow current loop, and all the units are connected through laminated busbars. The 6-path discharge units are divided into an upper layer and a lower layer which are symmetrically distributed, and heating devices of the discharge units are coated with heat-conducting silicone grease and are tightly arranged at the upper end and the lower end of the water cooling plate.
The discharging loop in the module is connected through the laminated busbar, the loop outside the module is connected through the low inductance line, the inductance of the whole discharging loop can be controlled to be less than 0.5 muH, the discharging impedance is less than 0.5 ohm, for the discharging module with the charging voltage of 1000V, the amplitude of the pulse current output by the module can reach 2000A, and the rising time of the front edge can be less than 1 mus.
The driving plate is tightly installed on each IGBT module to control the on and off of the IGBT modules.
The drive plate has active clamper and short-circuit protection function, can provide reliable guarantee to the IGBT module.
The driving board sends the fault feedback signal to the protection board while controlling the IGBT module, and the protection board sends out the casing after gathering each way of feedback signal.
The shell comprises a front panel, a middle partition plate, an upper mounting plate, a lower mounting plate, a side panel, a rear panel and a middle water-cooling plate, which are tightly connected through screws to form a complete box body.
And the front panel of the shell is provided with a low-voltage power supply, a trigger indicator and a fault feedback indicator lamp.
The water cooling plate divides the shell into an upper part and a lower part, and the water inlet and the water outlet of the water cooling plate are connected through a quick connector.
And the rear panel of the shell is provided with a power supply, a high-voltage connector, each discharge connector and a high-voltage connector protective baffle. And the frequency signals are sent to each driving plate through the signal plate, and the on and off of each IGBT module are controlled. The protection board is connected with each drive board, and sends out each way of protection signal through the interface after gathering processing.
The invention relates to a low-impedance all-solid-state discharge module for a high-transformation-ratio pulse transformer, the shape of which is shown in figure 2, all discharge loop devices are symmetrical and tightly arranged on the upper side and the lower side of a water cooling plate by taking the water cooling plate 12 as the center, the four sides of the module are designed into an assembled structure, and a main frame of the module is basically formed by only fixing side plates 9 and 22 on the left side and the right side of the water cooling plate. Intermediate bottom 6 divides into both sides around with the module, and low pressure power module 5, protection shield 7, signal board 4 are installed respectively to the front side, pilot lamp 8, and the rear side installation discharge unit device, the discharge unit device has: the diodes 14, 17, the IGBT modules 11, 13, the driving board 10, the energy storage capacitor 18, all the copper terminals 20 and the optical fiber connectors 21 are designed on the rear panel 19, and then the front panel 3, the upper 15 and the lower 1 cover plates are mounted to form a complete module. The front panel, the upper cover plate and the lower cover plate of the module can be detached at any time as required, and the test is convenient.
The invention relates to a low-impedance all-solid-state discharge module for a high-transformation-ratio pulse transformer, which has a mounting structure shown in figure 2, wherein a water cooling plate 12, two side plates 9 and 22 and a middle partition plate 6 form a main framework, and a front panel 3, a rear panel 19, an upper cover plate 15 and a lower cover plate 1 are tightly connected to the main framework through screws to form a complete frame body.
From the above, the low-impedance all-solid-state discharge module for the high-transformation-ratio pulse transformer can solve the problem of the rising rate of the leading edge of the primary discharge waveform of the high-transformation-ratio pulse transformer. The discharging module charges the energy storage capacitor through the charging loop by direct-current high voltage, the external frequency signal controls the on and off of the IGBT module, and meanwhile the energy storage capacitor forms a discharging loop through the IGBT, the module inner loop and the primary side of the high-transformation-ratio pulse transformer. The invention is characterized in that the discharging module comprises a plurality of paths of same independent discharging units as required, and the discharging module realizes the parallel charging and serial discharging of the paths, and effectively compresses the distributed inductance of a discharging loop through the reasonable space layout in the module and the connection of a flat cable, thereby greatly improving the di/dt of a discharging waveform, shortening the rising time of the discharging waveform and finally achieving the purpose of improving the front edge of the discharging waveform of the modulator.
The invention is a low impedance all solid state discharge module used for high transformation ratio pulse transformer, the function division is definite, the module structure is convenient for assembly production and maintenance, the internal circuit adopts laminated bus bar 2,16 connection, the layout is compact, the distributed inductance is small, the average power is large, and the like.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A low-impedance all-solid-state discharge module for a high-transformation-ratio pulse transformer comprises a shell, wherein a discharge unit is arranged in the shell; the method is characterized in that:
the discharging unit comprises a charging isolation unit, an energy storage unit, an IGBT module and a follow current loop,
commercial power is sent into a low-voltage power supply module in the shell through the aerial plug, and the low-voltage power supply module generates positive and negative 15V for auxiliary power supply;
high voltage is sent into the shell through the connector, the energy storage unit is charged through each charging isolation unit, and the energy storage unit is connected with the primary side of an external high-transformation-ratio pulse transformer through the IGBT module and the discharging connector to form a discharging loop;
frequency signals are sent to each driving board through a signal board, and the connection and disconnection of each IGBT module are controlled;
the shell is internally provided with a protection board which is connected with each drive board and sends out the shell through an interface after gathering and processing each protection signal.
2. The low impedance all solid state discharge module for a high conversion ratio pulse transformer of claim 1, wherein: the shell is internally provided with 6 independent discharging units, each discharging unit is provided with a charging isolation unit, an energy storage unit, an IGBT module and a follow current loop, and the discharging units are connected through a laminated busbar.
3. The low impedance all solid state discharge module for a high conversion ratio pulse transformer of claim 1, wherein: the driving plate is tightly installed on each IGBT module to control the on and off of the IGBT modules;
the driving plate is provided with an active clamping and short-circuit protection module;
the driving board sends the fault feedback signal to the protection board while controlling the IGBT module, and the protection board sends out the casing after gathering each way of feedback signal.
4. The low impedance all solid state discharge module for a high conversion ratio pulse transformer of claim 1, wherein: the shell comprises a front panel, a middle partition plate, an upper mounting plate, a lower mounting plate, a side panel, a rear panel and a middle water-cooling plate, which are tightly connected through screws to form a complete box body.
5. The low impedance all solid state discharge module for a high conversion ratio pulse transformer of claim 2, wherein: the 6-path discharge units are divided into an upper layer and a lower layer which are symmetrically distributed, and heating devices of the discharge units are coated with heat-conducting silicone grease and are tightly arranged at the upper end and the lower end of the water cooling plate.
6. The low impedance all solid state discharge module for a high conversion ratio pulse transformer of claim 1, wherein:
the front panel of the shell is provided with a low-voltage power supply, a trigger indicator and a fault feedback indicator lamp.
7. The low impedance all solid state discharge module for a high conversion ratio pulse transformer of claim 4, wherein: the water cooling plate divides the shell into an upper part and a lower part, and the water inlet and the water outlet of the water cooling plate are connected through a quick connector.
8. The low impedance all solid state discharge module for a high conversion ratio pulse transformer of claim 4, wherein:
and the rear panel of the shell is provided with a power supply, a high-voltage connector, each discharge connector and a high-voltage connector protective baffle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010615048.9A CN111884486A (en) | 2020-06-30 | 2020-06-30 | Low-impedance all-solid-state discharge module for high-transformation-ratio pulse transformer |
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| CN202010615048.9A CN111884486A (en) | 2020-06-30 | 2020-06-30 | Low-impedance all-solid-state discharge module for high-transformation-ratio pulse transformer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5905646A (en) * | 1996-12-20 | 1999-05-18 | Scanditronix Medical Ab | Power modulator |
| CN103391078A (en) * | 2013-07-19 | 2013-11-13 | 中国电子科技集团公司第十四研究所 | Small and efficient high-power solid-state modulator |
| CN106329982A (en) * | 2016-08-31 | 2017-01-11 | 西安交通大学 | Pulse transformer type all-solid-state repeated-frequency pulse trigger |
| CN109412391A (en) * | 2018-10-30 | 2019-03-01 | 中国船舶工业系统工程研究院 | The two-sided water cooling (PCC) power of high integration based on SiC device |
| CN110572011A (en) * | 2019-08-20 | 2019-12-13 | 合肥工业大学 | IGBT drive circuit soft switching device with short-circuit protection |
| CN110829797A (en) * | 2019-11-01 | 2020-02-21 | 中车永济电机有限公司 | Water-electricity separated multifunctional diesel locomotive power module and wiring structure |
-
2020
- 2020-06-30 CN CN202010615048.9A patent/CN111884486A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| US5905646A (en) * | 1996-12-20 | 1999-05-18 | Scanditronix Medical Ab | Power modulator |
| CN103391078A (en) * | 2013-07-19 | 2013-11-13 | 中国电子科技集团公司第十四研究所 | Small and efficient high-power solid-state modulator |
| CN106329982A (en) * | 2016-08-31 | 2017-01-11 | 西安交通大学 | Pulse transformer type all-solid-state repeated-frequency pulse trigger |
| CN109412391A (en) * | 2018-10-30 | 2019-03-01 | 中国船舶工业系统工程研究院 | The two-sided water cooling (PCC) power of high integration based on SiC device |
| CN110572011A (en) * | 2019-08-20 | 2019-12-13 | 合肥工业大学 | IGBT drive circuit soft switching device with short-circuit protection |
| CN110829797A (en) * | 2019-11-01 | 2020-02-21 | 中车永济电机有限公司 | Water-electricity separated multifunctional diesel locomotive power module and wiring structure |
Non-Patent Citations (3)
| Title |
|---|
| 朱永亮、王玮: "基于多路初级绕组脉冲变压器的固态调制器设计", 中国核科学技术进展报告——中国核学会2009年学术年会论文集（第一卷·第7册）, pages 358 - 362 * |
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