CN110098056B - Deionized water medium pulse capacitor system capable of automatically adjusting capacitance - Google Patents
Deionized water medium pulse capacitor system capable of automatically adjusting capacitance Download PDFInfo
- Publication number
- CN110098056B CN110098056B CN201910507949.3A CN201910507949A CN110098056B CN 110098056 B CN110098056 B CN 110098056B CN 201910507949 A CN201910507949 A CN 201910507949A CN 110098056 B CN110098056 B CN 110098056B
- Authority
- CN
- China
- Prior art keywords
- capacitance
- deionized water
- capacitance value
- water tank
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G5/01—Details
- H01G5/013—Dielectrics
- H01G5/0132—Liquid dielectrics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G5/04—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode
- H01G5/06—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode due to rotation of flat or substantially flat electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G5/16—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of distance between electrodes
Abstract
The invention relates to a deionized water medium pulse capacitor system capable of automatically adjusting capacitance, which consists of an industrial personal computer, a control unit, a stepping motor, a gear box, a transmission unit, an electrode cluster, a water tank filled with deionized water and a temperature sensor immersed in the water tank. When in use, the capacitance value in the set range is input on the industrial personal computer, the industrial personal computer program calculates the corresponding electrode cluster relative position parameter according to the given capacitance value and the temperature value acquired by the temperature sensor in the water tank and transmits the parameter to the control unit so as to send a level signal to drive the stepping motor to drive the transmission unit to adjust the relative position of the electrode cluster, and finally the capacitor reaches the set capacitance value. The system has the advantages of automatically adjustable capacitance, large adjustable capacitance range and capacity change caused by water temperature change, and is suitable for application scenes in which pulse capacitors with different capacitances are required to be used for generating pulse voltages with different waveforms for trial and error.
Description
Technical Field
The invention relates to the field of electrical tests, in particular to a deionized water medium pulse capacitor system capable of automatically adjusting capacitance.
Background
In some electrical tests, it is often necessary to use a pulse voltage generating device, and a pulse capacitor is one of the devices commonly used to construct pulse voltage generating circuits. The pulse capacitors with different capacities are needed to be used for generating the pulse voltages with different waveforms, so that under the working condition that the repeatability test is carried out by using the pulse voltages with different waveforms, if the pulse capacitors with adjustable capacities are used, the time for refitting the circuit can be greatly saved, and the test efficiency is improved.
Capacitance-adjustable capacitors are made to adjust their capacitance by varying electrode shape parameters, i.e., the positive area of the electrode pads and the pad spacing. However, when the manual adjustable capacitor is used, a user does not know a new capacitance value after the electrode shape parameter is adjusted, so that the new capacitance value is required to be measured, or a test circuit is required to be repeatedly debugged to ensure that the adjusted new capacitance value meets the requirement, the manual adjustable capacitor is poor in use experience in practical application, the efficiency of a pulse electric test is reduced, and a capacitor system capable of automatically adjusting the capacitance is designed and developed, so that the manual adjustable capacitor has good practical value.
In addition, it is desirable in practice that the capacitance of the adjustable capacitor can be adjusted over a wide range. However, the capacitance-adjustable capacitor generally uses air as a medium, and since the capacitance of the capacitor is proportional to the relative dielectric constant of the medium filled between the electrode plates, and the relative dielectric constant of air at normal temperature and normal pressure is small (about 1), the capacitance value of the general capacitance-adjustable capacitor is small, and the total adjustable range is limited; since deionized water has good insulating properties under a pulse voltage and a relative dielectric constant at normal temperature and pressure is large (about 80, that is, about 80 times that of air), if deionized water is used as an insulating medium of a pulse capacitor, the capacitance of the pulse capacitor can be greatly increased while the electrode shape parameter remains unchanged, and thus the total adjustable range of capacitance is correspondingly increased when the capacitance is adjusted by adjusting the electrode shape parameter. However, the dielectric constant of water varies with temperature by a larger extent than air, and thus the capacitance value of the aqueous medium capacitor varies with temperature of water by a larger extent. Therefore, the deionized water medium pulse capacitor system capable of automatically adjusting the capacitance is designed and developed, so that the deionized water medium pulse capacitor system has the functions of automatically adjusting the capacitance, having a larger adjustable capacitance range and automatically compensating the capacitance value change caused by water temperature change, and has good practical value for application scenes of repeated test of generating pulse voltages with different waveforms by using pulse capacitors with different capacitances.
Disclosure of Invention
Aiming at the actual application needs, the invention designs a deionized water medium pulse capacitor system capable of automatically adjusting capacitance, which consists of an industrial personal computer, a control unit, a stepping motor, a gear box, a transmission unit, an electrode cluster, a water tank filled with deionized water and a temperature sensor immersed in the water tank. When in use, a user inputs a capacitance value in a certain adjustable range on the industrial personal computer (the adjustable range of the capacitance value is determined in advance according to the adjustable range of the electrode shape parameter), then the industrial personal computer program calculates an electrode cluster shape adjustment parameter corresponding to the capacitance value according to the given capacitance value and a temperature value acquired and transmitted by a temperature sensor in a water tank (the relative dielectric constant of water is related to temperature, namely, the capacitance value is related to temperature), the control unit sends a level signal to drive a stepping motor to rotate, and drives a transmission unit to adjust the relative position of electrode plates of the electrode cluster, so that the total dead area between positive and negative electrode plates of the electrode cluster and the electrode plate distance are adjusted to corresponding values, and finally the capacitor reaches the set capacitance value, and the values take capacitance change caused by water temperature change into consideration and compensate.
Compared with the traditional manual air medium adjustable capacitor, the deionized water medium pulse capacitor system capable of automatically adjusting the capacitance has the advantages of automatically adjusting the capacitance, having a larger adjustable capacitance range and automatically compensating capacitance value change caused by water temperature change, and can be matched with a pulse voltage waveform generation circuit to generate pulse voltage waveforms with more various parameters for application scenes of repeated test of pulse voltages with different waveforms generated by using pulse capacitors with different capacitances, thereby greatly improving test efficiency.
Drawings
Fig. 1 is a schematic diagram of a capacitance value adjustment principle of a capacitor system according to the present invention.
Fig. 2 is a schematic diagram of the working principle of the capacitor system according to the present invention.
Detailed Description
The construction and operation of the present invention will be further described with reference to the accompanying drawings. Referring to fig. 1, the capacitance of the capacitor is related to the electrode shape, the facing area between the plates, the distance between the plates and the relative dielectric constant of the medium filled between the plates, and the capacitance calculation formula of the capacitor is shown as formula (1):
C =ε•ε 0 • S / d (1)
wherein:Cthe capacitance of the capacitor is expressed asF；εThe relative dielectric constant of the medium filled between the polar plates is dimensionless;ε 0 the dielectric constant in vacuum is 8.86 multiplied by 10 < -12 > F/m;Sis the facing area between polar plates, the unit is m 2 ；dThe unit is m, which is the distance between the polar plates. As can be seen from the formula (1),Cdepending onε、SAnddthree parameters, wherein the parametersεThe deionized water temperature measured by the temperature sensor in the water tank is determined, and for a determined electrode radius,Sby the angle of the rotatable electrode relative to the fixed electrodeθAnd (5) determining. Since the relative dielectric constant of water is much greater than that of air, the difference between the upper and lower limits of the adjustable range of capacitance values is much greater than that of an air dielectric capacitor system under the condition that the shape parameters of the electrodes are kept unchanged. For a given range, according to equation (1)CValue and current determined by instant water temperatureεThe value, there is a corresponding set ofθAnddthe value of (2) is such that the capacitance of the capacitor shown in FIG. 1 is exactlyC。
Referring to fig. 2, the deionized water medium pulse capacitor system capable of automatically adjusting capacitance is composed of an industrial personal computer, a control unit, a stepping motor and transmission unit, a capacitor plate, a water tank and a water temperature sensor. The working principle is as follows: the industrial personal computer and the control unit bidirectionally transmit data through a communication interface; the water temperature sensor collects the temperature of the polar plate medium in the water tank and transmits the temperature to the industrial personal computer to obtain the relative dielectric constant of the polar plate medium at the temperatureεThe user inputs the capacitance value to be set on the industrial computer interfaceCThe industrial personal computer calculates a group of polar plate relative angles matched with the capacitance set value according to the known parametersθAnd plate spacingd(the user can also directly set the facing area of the polar plate in the allowable range)SAnd plate spacingdGiven by a value of (2)CIs a value of (2). After the parameters are determined, the industrial personal computer determines the relative angle of the polar plateθAnd plate spacingdThe control unit outputs corresponding control level and pulse number to the stepping motor, and the transmission unit adjusts the electricity in the water tankRelative position of polar plate to make polar plate relative angleθAnd plate spacingdTo a corresponding value, the capacitance value of the capacitorCI.e. the set value is reached. During the use, the industrial personal computer is used for measuring the corresponding water temperature value in real timeεReal-time adjustment of valuesθAnddto the value of (2) to make the capacitance value of the capacitorCAlways remain at the set point.
Claims (1)
1. The utility model provides a but deionized water medium pulse capacitor system of automatically regulated electric capacity comprises industrial computer, control unit, step motor and gear box, drive unit, electrode cluster, water tank that fills deionized water and the temperature sensor submergence in the water tank, its characterized in that: the industrial control computer calculates the relative position parameter of the electrode cluster corresponding to the capacitance value according to the capacitance value and the temperature value acquired by the temperature sensor and transmitted in real time and transmits the relative position parameter to the control unit, the control unit sends out corresponding level signals to drive the stepping motor to rotate, and the transmission unit is driven to adjust the relative position of the electrode plates of the electrode cluster, so that the total dead area between the positive plate and the negative plate of the electrode cluster and the plate distance are adjusted to corresponding values, and finally the capacitor reaches the set capacitance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507949.3A CN110098056B (en) | 2019-06-13 | 2019-06-13 | Deionized water medium pulse capacitor system capable of automatically adjusting capacitance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507949.3A CN110098056B (en) | 2019-06-13 | 2019-06-13 | Deionized water medium pulse capacitor system capable of automatically adjusting capacitance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110098056A CN110098056A (en) | 2019-08-06 |
| CN110098056B true CN110098056B (en) | 2023-06-16 |
Family
ID=67450721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910507949.3A Active CN110098056B (en) | 2019-06-13 | 2019-06-13 | Deionized water medium pulse capacitor system capable of automatically adjusting capacitance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110098056B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115116749A (en) * | 2021-10-12 | 2022-09-27 | 中国人民解放军军事科学院防化研究院 | High-voltage pulse capacitance adjusting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001208780A (en) * | 2000-01-31 | 2001-08-03 | Toshiba Corp | Capacitance potential divider |
| CN101071071A (en) * | 2007-06-16 | 2007-11-14 | 昝昕武 | Engine throttle position sensing method and sensor |
| JP2010032245A (en) * | 2008-07-25 | 2010-02-12 | Japan Radio Co Ltd | Relative permittivity/conductivity measuring apparatus |
| CN103065796A (en) * | 2012-12-31 | 2013-04-24 | 国家电网公司 | Variable-pitch type power capacitor and adjusting method for capacitance value of variable-pitch type power capacitor |
| CN104330447A (en) * | 2014-10-23 | 2015-02-04 | 中国西电电气股份有限公司 | System and method applied to on-line detection of capacitance of collective shunt capacitor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200909822A (en) * | 2007-08-17 | 2009-03-01 | Delta Electronics Inc | Measuring apparatus for power loss of magnetic device |
-
2019
- 2019-06-13 CN CN201910507949.3A patent/CN110098056B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001208780A (en) * | 2000-01-31 | 2001-08-03 | Toshiba Corp | Capacitance potential divider |
| CN101071071A (en) * | 2007-06-16 | 2007-11-14 | 昝昕武 | Engine throttle position sensing method and sensor |
| JP2010032245A (en) * | 2008-07-25 | 2010-02-12 | Japan Radio Co Ltd | Relative permittivity/conductivity measuring apparatus |
| CN103065796A (en) * | 2012-12-31 | 2013-04-24 | 国家电网公司 | Variable-pitch type power capacitor and adjusting method for capacitance value of variable-pitch type power capacitor |
| CN104330447A (en) * | 2014-10-23 | 2015-02-04 | 中国西电电气股份有限公司 | System and method applied to on-line detection of capacitance of collective shunt capacitor |
Non-Patent Citations (1)
| Title |
|---|
| 邱爱慈 主编.第1章 总论.《脉冲功率技术应用》.2016,第5-11页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110098056A (en) | 2019-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109613365B (en) | Electrolytic capacitor state online evaluation method and system | |
| CN110098056B (en) | Deionized water medium pulse capacitor system capable of automatically adjusting capacitance | |
| CN103676231A (en) | Method and device for measuring Flicker value of liquid crystal module | |
| CN103176160A (en) | Local discharge simulation calibrating device | |
| CN102435973A (en) | Calibration apparatus of capacitive equipment insulation on-line monitoring system and method thereof | |
| CN106093797B (en) | Battery temperature field simulation device and system and verification method for battery thermal management | |
| CN112904116B (en) | System and method for evaluating dynamic characteristics of valve plate of lightning arrester under action of impulse current | |
| CN113589063B (en) | Lightning arrester valve plate pressure-sensitive characteristic evaluation system and method under multiple lightning strike actions | |
| TW201319596A (en) | Means of providing variable reactive load capability on an electronic load | |
| CN102565537A (en) | Sliding electrical-contact simulation test system | |
| CN107918067A (en) | The internal temperature rise test method and device of a kind of aluminium electrolutic capacitor | |
| WO2015074412A1 (en) | Gis field oscillation type impulse withstand voltage test waveform adjustment system and method | |
| CN103944280B (en) | A kind of wireless power transmission equipment transmitting terminal dynamic tuning device and tuning methods thereof | |
| TWM441818U (en) | Liquid level measuring device and control system for solder tank thereof | |
| CN109307807A (en) | The measuring device of capacitor C and ESR in a kind of big frequency range | |
| CN103792254A (en) | High-precision temperature control testing system for thermal resistance testing | |
| CN104266741B (en) | Calibrating platform and scaling method for transmission line of electricity aeolian vibration sensor | |
| CN110837031B (en) | Self-adaptive power adjusting device for FDS test | |
| CN102012248B (en) | Capacitance type water level sensor | |
| TWI796918B (en) | Power detection circuit and control circuit | |
| CN208848100U (en) | The temperature regulating device measured for SAW resonance, anti-resonance frequency | |
| CN101975898B (en) | Device for dynamically and electrically researching dielectric property of cells by using ultrasonic pulse | |
| CN112743242A (en) | High-precision control method and device of height adjuster and height adjuster control equipment | |
| CN219676185U (en) | Power semiconductor grid reliability testing device | |
| CN116298491B (en) | Pulse type direct current measurement method applied to backlight current detection of display screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |