CN113093850A - Method for generating standard sine wave AC constant current source - Google Patents
Method for generating standard sine wave AC constant current source Download PDFInfo
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- CN113093850A CN113093850A CN202110365474.6A CN202110365474A CN113093850A CN 113093850 A CN113093850 A CN 113093850A CN 202110365474 A CN202110365474 A CN 202110365474A CN 113093850 A CN113093850 A CN 113093850A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000001276 controlling effect Effects 0.000 claims abstract description 4
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 3
- 230000001131 transforming effect Effects 0.000 abstract 1
- 230000033228 biological regulation Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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Abstract
The invention belongs to the technical field of electric appliances, in particular to a new method for generating a standard sine wave alternating current constant current source, which aims at the problems that the circuit of the existing method is more complex, the AD cost is higher, the traditional signal source adopts a pump type step wave generating circuit, and the precision is lower, and the following scheme is proposed, and the method comprises the following steps: s1: switching on alternating current; s2: carrying out filtering treatment; s3: performing voltage reduction treatment by using a transformer; s4: processing the current after voltage reduction by using an inverter; s5: collecting, detecting and circularly processing current signals; s6: regulating voltage again by using the transformer; s7: detecting the stability of the current and regulating and controlling; s8: and outputting a standard sine wave alternating current constant current source. The invention has simple operation, lower cost and higher efficiency, can process the current after transforming the voltage, improves the processing efficiency, and can automatically regulate and control the current value and improve the precision.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to a novel method for generating a standard sine wave alternating current constant current source.
Background
In electronic measurement and automatic control systems, sine waves are important analog signals, and have wide application, and the sine waves are converted into step waves which can be processed as digital signals. The step wave is a signal whose value is not continuously changed along with time, its value has discreteness, and the step wave generated by the step wave signal generator can be used as time sequence control signal and multipole potential reference signal. In the field of electronic circuit design, the step wave is a common analog signal, and the sine wave to the step wave can be generated by an AD (analog-to-digital converter) with a counter and a pulse generator.
The existing method has the disadvantages of complex circuit and high AD cost, and the traditional signal source adopts a pump type step wave generating circuit and has low precision.
Disclosure of Invention
The invention aims to solve the defects that the circuit of the existing method is complex, the AD cost is high, the traditional signal source adopts a pump type step wave generating circuit, and the precision is low, and provides a novel method for generating a standard sine wave alternating current constant current source.
In order to achieve the purpose, the invention adopts the following technical scheme:
a new standard sine wave AC constant current source generating method comprises the following steps:
s1: switching on alternating current;
s2: carrying out filtering treatment;
s3: performing voltage reduction treatment by using a transformer;
s4: processing the current after voltage reduction by using an inverter;
s5: collecting, detecting and circularly processing current signals;
s6: regulating voltage again by using the transformer;
s7: detecting the stability of the current and regulating and controlling;
s8: and outputting a standard sine wave alternating current constant current source.
Preferably, in S1, an alternating current is selected and preliminary detection is performed on the alternating current: and detecting whether the voltage and the current are stable.
Preferably, in S2, the alternating current is processed by using a filter, so that the doped direct current in the alternating current can be filtered.
Preferably, in S3, the voltage reduction process is performed using a first transformer, so as to facilitate the current stabilization process.
Preferably, in S4, the ac power is rectified by an inverter to be integrated into a standard sine wave current.
Preferably, in S5, the signal collector is used to collect a current signal, and compare and analyze the sine wave of the current, so as to control the standard sine wave current, and firstly, if there is no standard sine wave current, the current flows into the inverter again for integration; second, if the standard sine wave current is met, the current enters a second transformer.
Preferably, after the standard sine wave current is completed in S6, a voltage reset is performed using a second transformer.
Preferably, in S7, the current detector is used to detect a constant value of the current, and firstly, if the current is a constant current value, the current enters the current output terminal, and secondly, if the current value of the current is unstable, the current is automatically regulated through the variable resistor and then enters the current output terminal.
Preferably, the variable resistor comprises an ammeter, a controller and an adjustable resistor, wherein the ammeter displays the current value of the current, and the controller controls the adjustable resistor to perform constant current value regulation.
Compared with the prior art, the invention has the advantages that:
this scheme easy operation, the cost is lower, and efficiency is higher, can carry out the vary voltage back to the electric current and handling, has improved the efficiency of handling, can exchange sinusoidal regulation and control at the low pressure, can carry out automatic regulation and control to the current value simultaneously, has improved the precision.
Drawings
FIG. 1 is a flow chart of a method for generating a new standard sine wave AC constant current source according to the present invention;
fig. 2 is a working schematic diagram of a new method for generating a standard sine wave ac constant current source according to the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-2, a method for generating a new standard sine wave ac constant current source comprises the following steps:
s1: switching on alternating current;
s2: carrying out filtering treatment;
s3: performing voltage reduction treatment by using a transformer;
s4: processing the current after voltage reduction by using an inverter;
s5: collecting, detecting and circularly processing current signals;
s6: regulating voltage again by using the transformer;
s7: detecting the stability of the current and regulating and controlling;
s8: and outputting a standard sine wave alternating current constant current source.
Preferably, in S1, an alternating current is selected and preliminary detection is performed on the alternating current: and detecting whether the voltage and the current are stable.
In this embodiment, in S2, the alternating current is processed by using a filter, so that the dc doping in the alternating current can be filtered.
In this embodiment, in S3, the voltage reduction processing is performed using the first transformer, which facilitates the current stabilization processing.
In this embodiment, in S4, an inverter is used to perform inversion rectification on the alternating current, and the direct current is integrated into a standard sine wave current.
In this embodiment, in S5, the signal collector is used to collect a current signal, and the sine wave of the current is compared and analyzed to control a standard sine wave current, and first, if there is no standard sine wave current, the current flows into the inverter again for integration; second, if the standard sine wave current is met, the current enters a second transformer.
In this embodiment, after S6 completes the standard sine wave current, the voltage is reset by the second transformer.
In this embodiment, in S7, a current detector is used to detect a constant value of current, and firstly, if the current is a constant current value, the current enters the current output terminal, and secondly, if the current value of the current is unstable, the current is automatically regulated through a variable resistor and then enters the current output terminal.
In this embodiment, the variable resistor includes an ammeter, a controller, and an adjustable resistor, and the current value is displayed by the ammeter, and the controller controls the adjustable resistor to perform constant current value regulation.
Example two
A new standard sine wave AC constant current source generating method comprises the following steps:
s1: switching on alternating current;
s2: carrying out filtering treatment;
s3: performing voltage reduction treatment by using a transformer;
s4: processing the current by adopting a precise dense alternating current constant current source;
s5: regulating voltage again by using the transformer;
s6: and outputting a standard sine wave alternating current constant current source.
Preferably, in S1, an alternating current is selected and preliminary detection is performed on the alternating current: and detecting whether the voltage and the current are stable.
In this embodiment, in S2, the alternating current is processed by using a filter, so that the dc doping in the alternating current can be filtered.
In this embodiment, in S3, the voltage reduction processing is performed using the first transformer, which facilitates the current stabilization processing.
In the embodiment, the precise dense alternating current constant current source in the S4 is mainly suitable for occasions where precise alternating current constant current sources are provided according to various requirements such as leakage protector coil parameter adjustment and alternating current constant current reference giving, the product adopts a power frequency synchronization and multiple active filtering voltage stabilization constant current sine wave forming technology to ensure that the output current is a standard sine wave, the constant current precision is superior to 0.1%, and the latest absolute value conversion technology enables the instrument to have extremely high display resolution.
In this embodiment, after the standard sine wave current is completed in S5, the voltage is reset by the second transformer and then output.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A new standard sine wave AC constant current source generation method is characterized by comprising the following steps:
s1: switching on alternating current;
s2: carrying out filtering treatment;
s3: performing voltage reduction treatment by using a transformer;
s4: processing the current after voltage reduction by using an inverter;
s5: collecting, detecting and circularly processing current signals;
s6: regulating voltage again by using the transformer;
s7: detecting the stability of the current and regulating and controlling;
s8: and outputting a standard sine wave alternating current constant current source.
2. The method as claimed in claim 1, wherein the step of S1 is selecting an ac power and performing preliminary testing on the ac power: and detecting whether the voltage and the current are stable.
3. The method as claimed in claim 1, wherein the step of S2 is implemented by processing the ac power with a filter to filter the dc power doped in the ac power.
4. The method as claimed in claim 1, wherein a first transformer is used in S3 for step-down processing to facilitate current stabilization.
5. The method as claimed in claim 1, wherein an inverter is used in S4 to perform inverse rectification on the ac power to integrate the dc power into a standard sine wave current.
6. The method as claimed in claim 1, wherein in S5, the signal collector is used to collect current signals and compare the sine wave of the current to control the standard sine wave current, and first, if there is no standard sine wave current, the current flows back to the inverter for integration; second, if the standard sine wave current is met, the current enters a second transformer.
7. The method as claimed in claim 1, wherein said step S6 is performed by a second transformer for voltage resetting after completing the standard sine wave current.
8. The method as claimed in claim 1, wherein the step S7 is implemented by detecting the constant value of the current with a current detector, and the current detector is used to input the constant value of the current to the current output terminal if the current is constant, and to automatically adjust the current value of the current by a variable resistor if the current value is unstable.
9. The method as claimed in claim 1, wherein the variable resistor comprises an ammeter, a controller and an adjustable resistor, the ammeter indicates the current value, and the controller controls the adjustable resistor to perform constant current value control.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110365474.6A CN113093850A (en) | 2021-03-17 | 2021-03-17 | Method for generating standard sine wave AC constant current source |
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| CN202110365474.6A CN113093850A (en) | 2021-03-17 | 2021-03-17 | Method for generating standard sine wave AC constant current source |
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| CN109194148A (en) * | 2018-10-11 | 2019-01-11 | 中国兵器装备集团自动化研究所 | A kind of novel high-precision high power AC Constant Current-Source Design method |
| CN208862750U (en) * | 2018-11-14 | 2019-05-14 | 苏州威迈克电源系统有限公司 | A kind of frequency-conversion constant-current constant voltage source |
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2021
- 2021-03-17 CN CN202110365474.6A patent/CN113093850A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2850131Y (en) * | 2005-11-22 | 2006-12-20 | 苏州大学 | Power frequency large range alternating constant current source |
| CN201550319U (en) * | 2009-11-06 | 2010-08-11 | 林文献 | High power LED lighting precision driver |
| CN102185481A (en) * | 2011-04-07 | 2011-09-14 | 马生茂 | Constant current source |
| CN202475843U (en) * | 2011-12-30 | 2012-10-03 | 中国民用航空总局第二研究所 | Sine-wave constant-current variable-frequency dimmer |
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