CN112953469A - Hydrogen thyratron high-pressure suspension trigger and control system thereof - Google Patents
Hydrogen thyratron high-pressure suspension trigger and control system thereof Download PDFInfo
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- CN112953469A CN112953469A CN202110124150.3A CN202110124150A CN112953469A CN 112953469 A CN112953469 A CN 112953469A CN 202110124150 A CN202110124150 A CN 202110124150A CN 112953469 A CN112953469 A CN 112953469A
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 46
- 239000001257 hydrogen Substances 0.000 title claims abstract description 46
- 239000000725 suspension Substances 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 15
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 12
- 229910052744 lithium Inorganic materials 0.000 claims description 12
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 28
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- 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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本发明公开了一种氢闸流管高压悬浮触发器及其控制系统，属于脉冲功率技术领域。本发明通过将触发器触发脉冲产生电路、加热电压产生电路、温度监测电路共地连接后与氢闸流管阴极相连接，由于触发器与氢闸流管在工作时电位相等，从而不需要对触发脉冲电路、加热电压产生电路和温度检测电路分别进行高压隔离，仅需要采用绝缘组件对地进行隔离即可，这大大减少了高压隔离变压器的使用数量，简化了装置结构，提高了触发装置运行可靠性。本发明通过控制系统发射光信号控制触发器各电路时序工作，由于控制系统与触发器之间仅采用光纤连接而不存在电气连接，从而实现了低压控制系统与高压悬浮触发器的电气隔离。
The invention discloses a hydrogen thyratron high-voltage suspension trigger and a control system thereof, belonging to the technical field of pulse power. In the present invention, the trigger pulse generating circuit, the heating voltage generating circuit and the temperature monitoring circuit are connected to the cathode of the hydrogen thyristor after being connected to the ground. The trigger pulse circuit, the heating voltage generation circuit and the temperature detection circuit are separately high-voltage isolated, and only need to use insulating components to isolate the ground, which greatly reduces the number of high-voltage isolation transformers used, simplifies the device structure, and improves the operation of the trigger device. reliability. The invention controls the timing operation of each circuit of the trigger by transmitting optical signals from the control system. Since the control system and the trigger are only connected by optical fibers without electrical connection, the electrical isolation of the low-voltage control system and the high-voltage suspension trigger is realized.
Description
Technical Field
The invention belongs to the technical field of pulse power, and particularly relates to a hydrogen thyratron high-voltage suspension trigger and a control system thereof.
Background
The hydrogen thyratron is a hot cathode low-pressure gas (hydrogen or deuterium) discharge device, has the advantages of high voltage resistance, strong through-current capability, strong overvoltage and overcurrent impact resistance and the like, and has obvious advantages compared with switches such as thyristors and IGBTs in the application of high voltage, large current and high switching speed.
However, the structure of the hydrogen thyratron is relatively complex, the matched trigger circuit is also complex, high-voltage trigger pulses and polar plate heating need to be provided, meanwhile, the trigger device is connected to a high-voltage loop, and electrical isolation of dozens of kV needs to be realized between the high-voltage loop and the low-voltage loop. The traditional trigger circuit adopts a high-voltage isolation transformer for isolation, high-voltage pulse and heating two loops are required to be isolated respectively, if temperature measurement is introduced, the high-voltage isolation of one loop is required to be added, the size and the weight of the trigger are greatly increased, and meanwhile, the operation reliability of the device is greatly reduced. Before the hydrogen thyratron is triggered, heating is needed, the heating temperature has a large influence on the performance of the thyratron, however, in order to simplify the structure, a temperature measuring interface is generally not provided on the thyratron, and the thyratron is heated for a fixed time by using a fixed voltage according to experience, so that the temperature of the thyratron reaches the optimal triggering temperature. However, when the thyristor is continuously operated, the heating method cannot maintain the temperature of the thyristor at the optimal trigger temperature, thereby affecting the conduction performance of the thyristor and shortening the service life of the thyristor due to overhigh temperature.
Disclosure of Invention
Aiming at the defects and improvement requirements of the prior art, the invention provides a hydrogen thyratron high-voltage suspension trigger and a control system thereof, and aims to greatly reduce the use number of high-voltage isolation transformers, simplify the structure of the device and improve the operation reliability of the trigger device.
To achieve the above object, according to a first aspect of the present invention, there is provided a hydrogen thyratron high-pressure suspension trigger, comprising: the device comprises a trigger pulse generating circuit, a heating voltage generating circuit, a temperature monitoring circuit, a power supply battery, a charging circuit and an insulating assembly;
the trigger pulse generating circuit is used for providing high-voltage trigger pulses to the hydrogen thyratron;
the heating voltage generating circuit is used for providing heating voltage for the hydrogen thyratron heating wire;
the temperature monitoring circuit is used for monitoring the temperature of the surface of the cathode of the hydrogen thyratron in real time and sending the monitored temperature to the peripheral control system so as to control the output voltage of the heating voltage generating circuit;
the power supply battery is used for providing direct-current steady-state voltage for the trigger pulse generating circuit, the heating voltage generating circuit and the temperature monitoring circuit;
the charging circuit is used for charging the power supply battery by using commercial power, and isolating the commercial power from the trigger during the working period of the trigger;
the insulating assembly is used for isolating the trigger pulse generating circuit, the heating voltage generating circuit, the temperature monitoring circuit, the power supply battery, the charging circuit and the external low-voltage end of the trigger;
the trigger pulse generating circuit, the heating voltage generating circuit and the temperature monitoring circuit are grounded to form a common ground end, and the common ground end is directly connected with the cathode of the hydrogen thyratron when the trigger works, so that the trigger is in a high-voltage suspension state.
Preferably, the charging circuit adopts a wireless charging mode.
Has the advantages that: the power supply battery is charged in a wireless charging mode, and energy is transmitted between the transmitting coil and the receiving coil in a magnetic energy mode based on the principle of electromagnetic induction, so that high-voltage isolation between commercial power and the trigger is effectively realized.
Preferably, the charging circuit comprises a transmitting plate, a transmitting coil, a receiving coil and a receiving plate, the transmitting coil, the receiving coil and the receiving plate are placed in a laminated structure, four corners of the laminated structure are supported by threaded columns, and high voltage between the transmitting coil and the receiving coil is isolated by epoxy plates.
Has the advantages that: by adopting the charging circuit structure which is stacked in a close range, the energy coupling efficiency is higher as the relative distance between the transmitting coil and the transmitting coil of the charging circuit is shorter, so that the high-efficiency charging of the lithium battery is realized.
Preferably, the power supply battery is a lithium battery.
Has the advantages that: according to the invention, the lithium battery is used as a power supply of the trigger, and the lithium battery has the advantages of high energy density, long service life, high charging efficiency, safety, environmental protection and the like, so that the trigger can work safely and efficiently for a long time.
Preferably, the trigger pulse generating circuit includes: the device comprises a DCDC boosting module, an IGBT, a high-voltage trigger capacitor (C1), a pulse transformer and a relay;
the relay is positioned between the power supply battery and the DCDC boosting module and used for controlling the on-off of a charging loop of the high-voltage trigger capacitor;
the input end of the DCDC boosting module is connected with a power supply battery through a relay, and the output end of the DCDC boosting module is connected with a high-voltage trigger capacitor and used for charging the high-voltage trigger capacitor;
the high-voltage trigger capacitor is connected with the IGBT and the primary side of the pulse transformer, and the secondary side of the pulse transformer is connected with the hydrogen thyratron, so that when the IGBT is switched on, the high-voltage trigger capacitor discharges electricity to the pulse transformer, and required high-voltage trigger pulses are generated on the secondary side of the transformer.
Has the advantages that: the high-voltage trigger pulse is obtained by charging and discharging the high-voltage trigger capacitor, and the high-precision stable control of the high-voltage trigger pulse is realized because the discharge switch adopts the semiconductor switch IGBT with high action speed and small jitter time.
Preferably, the heating voltage generating circuit includes: half-bridge circuit and LC filter circuit, half-bridge circuit's output is connected with LC filter circuit's input, and the heater strip of hydrogen thyratron is received to LC filter circuit's output, and its output heating voltage is decided by half-bridge circuit's PWM control signal's duty cycle.
Has the advantages that: the output voltage of the heating voltage generating circuit is adjusted through the PWM control signal, the half-bridge circuit output voltage is PWM wave, the amplitude value is equal to the voltage of the power supply battery, the frequency is equal to the frequency of the control signal, and the direct current output voltage value after the high-frequency component is filtered by the LC filter circuit is in direct proportion to the duty ratio of the PWM control signal, so that the accurate control of the output voltage value of the heating voltage generating circuit is realized.
Preferably, the temperature monitoring circuit is an infrared thermometer.
Has the advantages that: according to the invention, the infrared thermometer is used as the sensor of the temperature detection circuit, and the infrared thermometer has the characteristics of high measurement precision, small size and the like, so that the high-precision measurement of the temperature of the hydrogen thyratron is realized.
Preferably, the trigger further comprises: and the metal shielding box is connected with the common ground end and is used for shielding electromagnetic interference outside the trigger.
Has the advantages that: according to the invention, the metal shielding box connected with the common ground end is used for reducing the external electromagnetic interference on the internal circuit of the trigger and ensuring the stable and reliable operation of the trigger based on the shielding effect of the metal shielding box on the space electric field and the magnetic field.
To achieve the above object, according to a second aspect of the present invention, there is provided a control system of a hydrogen thyratron high-pressure suspension trigger as described in the first aspect, the control system comprising:
the heating control module is used for issuing an instruction to the heating voltage generation circuit to enable the heating voltage generation circuit to provide heating voltage for the hydrogen thyratron heating wire so as to preheat the hydrogen thyratron and enable the temperature of the hydrogen thyratron to be maintained at the optimal triggering temperature;
the trigger pulse control module is used for issuing an instruction to the trigger pulse generating circuit to enable the trigger pulse generating circuit to generate a high-voltage trigger pulse so as to puncture the gas in the hydrogen thyratron and enable the hydrogen thyratron to be conducted;
the temperature control module is used for receiving the temperature sent by the temperature monitoring circuit and controlling the output voltage of the heating voltage generating circuit so as to maintain the temperature of the hydrogen thyratron at the optimal trigger temperature;
and the control system and the high-voltage suspension trigger are in signal transmission through optical fibers.
Preferably, the temperature control module compares the monitored temperature with a given optimal trigger temperature of the hydrogen thyristor, and generates a PWM heating signal with a corresponding duty ratio, and the heating signal is transmitted to the trigger through an optical fiber, so as to generate a corresponding heating voltage to heat the thyristor and maintain the thyristor temperature at the optimal trigger temperature.
Has the advantages that: according to the invention, the temperature of the hydrogen thyratron is subjected to feedback control regulation through the temperature control module, and the controlled quantity can be stabilized at a set value based on the principle of feedback control, so that the hydrogen thyratron is stabilized at a temperature suitable for conduction.
Generally, by the above technical solution conceived by the present invention, the following beneficial effects can be obtained:
(1) according to the invention, the trigger pulse generating circuit, the heating voltage generating circuit and the temperature monitoring circuit are connected with the cathode of the hydrogen thyratron after being connected with the common ground, and the trigger and the hydrogen thyratron have the same potential during working, so that the trigger pulse circuit, the heating voltage generating circuit and the temperature monitoring circuit do not need to be respectively isolated at high voltage, and only an insulating component is needed to be adopted to isolate the ground, thus the using number of high-voltage isolation transformers is greatly reduced, the device structure is simplified, and the operation reliability of the trigger device is improved.
(2) The invention controls the time sequence work of each circuit of the trigger by the light signal emitted by the control system, and the control system and the trigger are only connected by the optical fiber without electrical connection, thereby realizing the electrical isolation of the low-voltage control system and the high-voltage suspension trigger.
Drawings
Fig. 1 is a schematic structural diagram of a thyristor high-voltage suspension trigger provided by the present invention;
FIG. 2 is a schematic diagram of the temperature feedback control provided by the present invention;
fig. 3 is a schematic diagram related to wireless charging according to the present invention;
fig. 4 is a diagram of a system isolation structure provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention provides a thyristor high-voltage suspension trigger, which is powered by a battery, and a control signal is transmitted from a low-voltage end to a high-voltage end through an optical fiber. The suspension trigger does not need to isolate the trigger pulse generating circuit and the heating voltage generating circuit respectively, and only needs to realize the overall isolation of the trigger device to the ground, thereby simplifying the structure of the device and improving the operational reliability of the trigger device. The operating temperature of the hydrogen thyristors has a large impact on the switching performance and life span, however, in order to simplify the structure of the thyristors themselves, conventional thyristors do not provide a temperature measuring interface. The invention introduces an infrared thermometer which is attached to the surface of the thyratron tube, digitizes the temperature information and outputs the temperature information through the optical fiber, thereby realizing the feedback control of the working temperature of the thyratron tube. On the charging scheme of the trigger battery, the invention provides a wireless charging mode, which ensures that a low-voltage power supply end is completely and electrically isolated from the trigger, and realizes reliable isolation between high-voltage ends and low-voltage ends.
In the prior art, the generation of a trigger signal of a trigger is always finished at a low-voltage end, and the trigger signal is amplified and then connected to a hydrogen thyratron at a high-voltage end, so that the reliable electrical isolation between the high-voltage end and the low-voltage end is the basic function of the trigger. The trigger isolation is generally realized by adopting an isolation transformer, and at least two isolation transformers are needed for isolating the heating loop and the trigger pulse loop respectively, so that the size and the weight of the trigger are large, and the system integration level is not improved favorably.
According to the high-voltage suspension trigger provided by the invention, the whole trigger is suspended at the high-voltage end with the same potential as the thyristor, so that high-voltage isolation is not required between the trigger and the thyristor, and only the integral isolation between the trigger and the low-voltage end is required, and the high-voltage suspension trigger is easily realized through the external packaging of the trigger. The trigger saves a heavy high-voltage isolation transformer, effectively reduces the volume and the weight, simultaneously reduces the number of connecting circuits, simplifies the system structure and improves the system reliability. The power supply of the trigger is realized by adopting a battery, the trigger signal is transmitted by adopting optical fibers, the complete isolation of the trigger and the low-voltage control end is realized, and the problem that the low-voltage control end is damaged due to the fact that an isolation transformer in the traditional trigger is possibly broken down can be effectively avoided.
Fig. 1 shows a circuit configuration of the flip-flop. The circuit mainly comprises a lithium battery, a heating voltage generating circuit and a trigger pulse generating circuit, the whole trigger works in a suspension high-voltage state, and control signals are transmitted through optical fibers. The lithium battery is a power supply of the whole trigger, the heating circuit comprises a half-bridge circuit and an LC filter circuit, the output heating voltage of the heating circuit is determined by the duty ratio of a PWM (pulse-width modulation) driving signal of the half-bridge circuit, and the PWM driving signal is controlled by a temperature feedback system. And the generation process of the trigger pulse is described as follows: firstly, an adjustable DCDC boosting module charges a high-voltage trigger capacitor to a proper voltage value, then the IGBT is controlled to be conducted through a trigger signal, the capacitor discharges to a pulse transformer, and a required high-voltage trigger pulse is generated on a secondary side of the transformer.
The invention provides an infrared temperature measurement scheme, wherein an infrared thermometer is attached to the surface of a thyristor, signals are converted into light pulses after being digitally modulated, and temperature signals are easily fed back to a low-voltage control end through optical fibers in actual use so as to realize temperature feedback control.
The temperature feedback control schematic is shown in fig. 2. The real-time temperature of the thyristor is measured by an infrared thermometer attached to the surface of the thyristor and fed back to a control system, the real-time temperature of the thyristor is compared with the optimal trigger temperature of the given thyristor and then processed to generate a PWM heating signal with a proper duty ratio, and the heating signal is transmitted to a trigger through an optical fiber, so that corresponding heating voltage is generated to heat the thyristor.
The high-voltage suspension trigger is powered by a battery, the charging of the battery becomes an interface between high voltage and low voltage, and how to realize high-efficiency charging on the premise of high-voltage isolation is an important problem. If the charging is carried out in a wired mode and the charging interface is disconnected during the working period of the thyristor, effective isolation can be realized, but online charging cannot be realized, and meanwhile, if the charging interface is not disconnected for some reason, the charging loop is easy to damage at high voltage.
The lithium battery is used as a trigger power supply, the energy of the lithium battery is provided by commercial power through a wireless charging module, the wireless charging module is composed of a transmitting plate, a transmitting coil, a receiving coil and a receiving plate, the four lithium battery is placed in a laminated structure, four corners of the four lithium battery are supported by threaded columns, and high voltage between the transmitting coil and the receiving coil is isolated by a large epoxy plate.
In order to realize reliable isolation, the invention provides a wireless charging mode, wherein no electrical contact exists between a wireless transmitting coil and a receiving coil, so that the electrical isolation of a high-voltage side and a low-voltage side can be effectively realized, and the possibility of damaging a low-voltage end due to faults is avoided; meanwhile, the online charging of the battery can be realized in the mode, the convenient charging when the electric quantity is insufficient can be realized, and the cable is not required to be detached or connected.
The wireless charging principle is shown in fig. 3. Commercial power generates alternating current in the transmitting coil after being rectified and frequency-converted by the transmitting plate, energy is transferred to the receiving coil from the transmitting coil by utilizing the principle of electromagnetic induction, and then the lithium battery is charged after being rectified by the receiving plate.
The trigger system isolation structure is shown in fig. 4. The whole trigger 3 is placed in a metal shielding box 2, and because the trigger works in a suspension high-voltage state, the trigger and the metal shielding box are fixed in an insulating box 1 made of acrylic plate materials for high-voltage isolation from the outside, input control signals on the trigger are all led in through optical fiber lines, and the output end of the trigger is led out to a thyristor through a high-voltage cable.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110124150.3A CN112953469A (en) | 2021-01-29 | 2021-01-29 | Hydrogen thyratron high-pressure suspension trigger and control system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110124150.3A CN112953469A (en) | 2021-01-29 | 2021-01-29 | Hydrogen thyratron high-pressure suspension trigger and control system thereof |
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| CN112953469A true CN112953469A (en) | 2021-06-11 |
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| CN202110124150.3A Pending CN112953469A (en) | 2021-01-29 | 2021-01-29 | Hydrogen thyratron high-pressure suspension trigger and control system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116321663A (en) * | 2023-03-31 | 2023-06-23 | 中国工程物理研究院流体物理研究所 | Heavy frequency induction acceleration unit and working method thereof |
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| JPS61161960A (en) * | 1985-01-09 | 1986-07-22 | Fuji Electric Co Ltd | Gate turn-off thyristor control device |
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| CN103795286A (en) * | 2014-02-21 | 2014-05-14 | 南京冠亚电源设备有限公司 | High-voltage repetition-frequency impulse source based on GL1551G type hydrogen thyratron |
| CN104079191A (en) * | 2014-07-11 | 2014-10-01 | 湖南新亚胜科技发展有限公司 | Non-isolated LED driving power circuit |
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2021
- 2021-01-29 CN CN202110124150.3A patent/CN112953469A/en active Pending
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|---|---|---|---|---|
| JPS61161960A (en) * | 1985-01-09 | 1986-07-22 | Fuji Electric Co Ltd | Gate turn-off thyristor control device |
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Non-Patent Citations (2)
| Title |
|---|
| YANG ZHAO: "Optimization of high-voltage pulse trigger for TDI-type hydrogen thyratrons", 《2020 IEEE 1ST CHINA INTERNATIONAL YOUTH CONFERENCE ON ELECTRICAL ENGINEERING (CIYCEE)》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116321663A (en) * | 2023-03-31 | 2023-06-23 | 中国工程物理研究院流体物理研究所 | Heavy frequency induction acceleration unit and working method thereof |
| CN116321663B (en) * | 2023-03-31 | 2023-11-21 | 中国工程物理研究院流体物理研究所 | Heavy frequency induction acceleration unit and working method thereof |
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Application publication date: 20210611 |