CN105699809A - Direct current voltage drop generator - Google Patents
Direct current voltage drop generator Download PDFInfo
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- CN105699809A CN105699809A CN201610086833.3A CN201610086833A CN105699809A CN 105699809 A CN105699809 A CN 105699809A CN 201610086833 A CN201610086833 A CN 201610086833A CN 105699809 A CN105699809 A CN 105699809A
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- voltage drop
- input
- voltage
- input module
- control module
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Semiconductor Integrated Circuits (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
Abstract
The invention discloses a direct current voltage drop generator and relates to the field of equipment tests. The direct current voltage drop generator comprises a high voltage switch, an input module and a low voltage control module, wherein the high voltage switch is a switch array formed by a plurality of metal-oxide semiconductor field effect transistors that are transversely arranged in parallel, grid electrodes of the metal-oxide semiconductor field effect transistors are interconnected, the high voltage switch is used for generating voltage drops, the input module is used for inputting voltage drop time parameter instructions, the low voltage control module is connected with the input module and the high voltage switch, and the low voltage control module is used for collecting the voltage drop time parameter instructions input via the input module and controlling the high voltage switch according to the voltage drop time parameter instructions input via the input module. The direct current voltage drop generator can be used for running accurate voltage drop tests on equipments of different powers.
Description
Technical field
The present invention relates to equipment field tests, be specifically related to a kind of DC voltage drop generator。
Background technology
Progress along with society, it is universal that electric energy uses, increasing electrical equipment is used, but in actual use procedure, power supply unit inevitably there will be the Voltage Drop of moment, now, if the anti-power-supply fluctuation ability of electrical equipment, when voltage surprisingly falls, equipment fault very easily occurs, the equipment that there is also time serious is smoldered the immeasurable consequence such as on fire, has had a strong impact on the normal use of equipment。Therefore, in the development process of electrical equipment, it will usually equipment is carried out Voltage Drop test, to verify the reactance voltage drop performance of equipment。Currently, the product that existing analog voltage falls is only capable of exporting the power of a few hectowatt, it is impossible to meeting the Voltage Drop test of some large power-consuming equipment, meanwhile, the Voltage Drop time is difficult to be precisely controlled, and test error is excessive。
Summary of the invention
For the defect existed in prior art, it is an object of the invention to provide a kind of DC voltage drop generator, it is possible to accurately the equipment of different capacity is carried out Voltage Drop test。
For reaching object above, the present invention adopts the technical scheme that: including: high-voltage switch gear, input module and low-pressure control module, described high-voltage switch gear is the switch arrays that the horizontally-parallel permutation and combination of multiple Metal-Oxide Semiconductor field-effect transistor becomes, the grid of described each Metal-Oxide Semiconductor field-effect transistor is all connected, and described high-voltage switch gear is for producing falling of voltage；Described input module is for the parameter instruction of input voltage drop-out time；Described low-pressure control module is connected with described input module and described high-voltage switch gear respectively, described low-pressure control module is for the parameter instruction of the Voltage Drop time of Gather and input module input, and the parameter instruction according to the Voltage Drop time of input module input controls high-voltage switch gear。
On the basis of technique scheme, described high-voltage switch gear be respectively arranged at two ends with input terminal adapter and lead-out terminal adapter, described input terminal adapter connect DC source, described lead-out terminal adapter connect equipment under test。
On the basis of technique scheme, described input module includes multiple key switch arranged in arrays。
On the basis of technique scheme, described Voltage Drop time range is 0.2-999.9ms。
On the basis of technique scheme, the Voltage Drop time of described input module input is the single Voltage Drop time。
On the basis of technique scheme, the Voltage Drop time of described input module input is the repeatedly Voltage Drop time that dutycycle is identical or dutycycle is different。
On the basis of technique scheme, described low-pressure control module includes CPLD, the clock generator being connected with described CPLD and the photo-coupler being connected with the grid of Metal-Oxide Semiconductor field-effect transistor any one described。
On the basis of technique scheme, the crystal oscillator of described clock generator is active crystal oscillator。
On the basis of technique scheme, the parameter instruction of the Voltage Drop time of described CPLD Real-time Collection input module input, and after being converted into pulse signal, it being sent to photo-coupler, photo-coupler controls simultaneously turning on or simultaneously closing off of Metal-Oxide Semiconductor switch with field-effect transistors array。
On the basis of technique scheme, also including a display module being connected with described low-pressure control module, described display module includes multiple 8 segmentation LED charactrons, and described display module is for showing the running status of Voltage Drop time and low-pressure control module。
Compared with prior art, it is an advantage of the current invention that:
(1) high-voltage switch gear is made up of multiple Metal-Oxide Semiconductor field-effect transistors, can carry out the configuration of quantity according to the power of equipment under test, meet the testing requirement of the equipment of different capacity, applied widely。
(2) the other clock generator being equipped with of CPLD, it is possible to provide clock timing accurately for whole generator system, thus producing the Voltage Drop time accurately so that the test result of equipment is more accurate。
(3) controller of low-pressure control module is the CPLD of low cost, logical code can pass through the direct programming of cable in the IC1 chip of CPLD, need not control by peripheral CPU, effectively save the cost of start waiting time and product。
Accompanying drawing explanation
Fig. 1 is the logic chart of a kind of DC voltage drop generator of the present invention。
Detailed description of the invention
It is described in further detail below in conjunction with accompanying drawing and to the present invention。
Shown in Figure 1, the present invention provides a kind of DC voltage drop generator, including the high-voltage switch gear being sequentially connected, low-pressure control module and input module。
Input module includes multiple key switch arranged in arrays, is used for the parameter instruction of low-pressure control module input voltage drop-out time, the Voltage Drop single persistent period of its input range for 0.2-999.9ms。Certainly, the time that the time parameter inputted can fall for primary voltage。Can also being the time of the repeatedly Voltage Drop that dutycycle is identical or dutycycle is different, namely input multiple voltage dip duration, the interval between each Voltage Drop can be identical, it is also possible to differs。
High-voltage switch gear is the horizontally-parallel switch arrays rearranged of multiple Metal-Oxide Semiconductor field-effect transistor, the grid of each Metal-Oxide Semiconductor field-effect transistor is all connected, the quantity of Metal-Oxide Semiconductor field-effect transistor can configure according to equipment under test watt level, meets the test of distinct device。High-voltage switch gear is for producing falling of voltage, input terminal adapter that the two ends of high-voltage switch gear are respectively connected with DC source and the lead-out terminal adapter being connected with equipment under test。
Low-pressure control module includes the photo-coupler that CPLD, the clock generator being connected with CPLD and the grid with any one Metal-Oxide Semiconductor field-effect transistor are connected, low-pressure control module is for the parameter instruction of the Voltage Drop time of Gather and input module input, and the parameter instruction according to the Voltage Drop time of input module input controls high-voltage switch gear。The parameter instruction of the Voltage Drop time of CPLD Real-time Collection input module input, and it is sent to photo-coupler after being converted into pulse signal, and then photo-coupler controls simultaneously turning on or simultaneously closing off of Metal-Oxide Semiconductor switch with field-effect transistors array, thus realizing being turned on or off of voltage in high-voltage switch gear, low-voltage is namely adopted to control high voltage。Because the grid of each Metal-Oxide Semiconductor field-effect transistor is all connected to, being then connected with photo-coupler, each Metal-Oxide Semiconductor field-effect transistor just can be controlled by such CPLD simultaneously。The crystal oscillator of clock generator is active crystal oscillator, using the teaching of the invention it is possible to provide time counting accurately, is input in CPLD, provides clock timing accurately for whole generator, thus producing the Voltage Drop time accurately。
Also include a display module being connected with low-pressure control module, display module includes multiple 8 segmentation LED charactrons, display module is for showing the running status of Voltage Drop time and low-pressure control module, the parameter instruction of the Voltage Drop time collected is carried out internal decoding by CPLD, and the signal after decoding is sent to display module, make the LED numeral method Voltage Drop time。
The present invention is not limited to above-mentioned embodiment, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, and these improvements and modifications are also considered as within protection scope of the present invention。The content not being described in detail in this specification belongs to the known prior art of professional and technical personnel in the field。
Claims (10)
1. a DC voltage drop generator, it is characterised in that including:
High-voltage switch gear, described high-voltage switch gear is the switch arrays that the horizontally-parallel permutation and combination of multiple Metal-Oxide Semiconductor field-effect transistor becomes, the grid of described each Metal-Oxide Semiconductor field-effect transistor is all connected, and described high-voltage switch gear is for producing falling of voltage；
Input module, described input module is for the parameter instruction of input voltage drop-out time；
Low-pressure control module, described low-pressure control module is connected with described input module and described high-voltage switch gear respectively, described low-pressure control module is for the parameter instruction of the Voltage Drop time of Gather and input module input, and the parameter instruction according to the Voltage Drop time of input module input controls high-voltage switch gear。
2. a kind of DC voltage drop generator as claimed in claim 1, it is characterized in that: described high-voltage switch gear be respectively arranged at two ends with input terminal adapter and lead-out terminal adapter, described input terminal adapter connects DC source, and described lead-out terminal adapter connects equipment under test。
3. a kind of DC voltage drop generator as claimed in claim 1, it is characterised in that: described input module includes multiple key switch arranged in arrays。
4. a kind of DC voltage drop generator as claimed in claim 1, it is characterised in that: described Voltage Drop time range is 0.2-999.9ms。
5. a kind of DC voltage drop generator as claimed in claim 1, it is characterised in that: the Voltage Drop time of described input module input is the single Voltage Drop time。
6. a kind of DC voltage drop generator as claimed in claim 1, it is characterised in that: the Voltage Drop time of described input module input is the repeatedly Voltage Drop time that dutycycle is identical or dutycycle is different。
7. a kind of DC voltage drop generator as claimed in claim 1, it is characterised in that: described low-pressure control module includes CPLD, the clock generator being connected with described CPLD and the photo-coupler being connected with the grid of Metal-Oxide Semiconductor field-effect transistor any one described。
8. a kind of DC voltage drop generator as claimed in claim 7, it is characterised in that: the crystal oscillator of described clock generator is active crystal oscillator。
9. a kind of DC voltage drop generator as claimed in claim 7, it is characterized in that: the parameter instruction of the Voltage Drop time of described CPLD Real-time Collection input module input, and after being converted into pulse signal, it being sent to photo-coupler, photo-coupler controls simultaneously turning on or simultaneously closing off of Metal-Oxide Semiconductor switch with field-effect transistors array。
10. a kind of DC voltage drop generator as described in any one of claim 1 to 9, it is characterized in that: also include a display module being connected with described low-pressure control module, described display module includes multiple 8 segmentation LED charactrons, and described display module is for showing the running status of Voltage Drop time and low-pressure control module。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610086833.3A CN105699809A (en) | 2016-02-16 | 2016-02-16 | Direct current voltage drop generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610086833.3A CN105699809A (en) | 2016-02-16 | 2016-02-16 | Direct current voltage drop generator |
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| CN105699809A true CN105699809A (en) | 2016-06-22 |
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| CN201610086833.3A Pending CN105699809A (en) | 2016-02-16 | 2016-02-16 | Direct current voltage drop generator |
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2016
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| EP2146364A2 (en) * | 2008-07-15 | 2010-01-20 | Abb Ag | Method for restricting the consumption of electrical energy |
| CN201584367U (en) * | 2009-06-10 | 2010-09-15 | 福州大学 | AC and DC general voltage dropout preventive contactor controller |
| CN103675730A (en) * | 2012-09-14 | 2014-03-26 | 通用电气公司 | System and method for maintaining soft switching condition in a gradient coil driver circuit |
| CN102904458A (en) * | 2012-11-08 | 2013-01-30 | 南车株洲电力机车研究所有限公司 | Voltage sag generation device and control method and device for inverter |
| CN103926443A (en) * | 2013-01-16 | 2014-07-16 | 国家电网公司 | Voltage drop simulation test circuit and method |
| CN103941111A (en) * | 2013-01-18 | 2014-07-23 | 国家电网公司 | Voltage sag simulation method and device |
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Application publication date: 20160622 |