Wide-range and closed-loop control alternating current source and processing method

A closed-loop control, AC current technology, applied in the field of electronics, can solve the problems of constant current source AC current source research, limited design, etc., to achieve the effect of switchable range, simple circuit, stable and controllable performance

Inactive Publication Date: 2019-05-28
湖南银河电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stabilized voltage sources and constant current sources play an important role in instrumentation, electronic equipment and high-tech industries. The research and design of AC current sources are relatively limited

Method used

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  • Wide-range and closed-loop control alternating current source and processing method
  • Wide-range and closed-loop control alternating current source and processing method
  • Wide-range and closed-loop control alternating current source and processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment discloses an AC current source with a wide range and closed-loop control, including:

[0025] The V / I conversion circuit is used to convert the AC input voltage into an AC current output, and the input voltage is a variable one controlled by a closed-loop control loop to realize an adjustable range; and the V / I conversion circuit is also equipped with at least Two resistors are connected in parallel to change the total resistance value of the parallel resistors through on-off combination to form variable 2 with adjustable range; the output current of the V / I conversion circuit is linear with the quotient of variable 1 and variable 2 transform;

[0026] A sampling resistor connected in series between the V / I conversion circuit and the load;

[0027] The closed-loop control loop includes an analog-to-digital converter connected to the sampling resistor to realize the required feedback data acquisition, a digital-to-analog converter connected to the input ...

Embodiment 2

[0051] Corresponding to the above-mentioned embodiment 1, this embodiment discloses a wide-range and closed-loop control AC current source processing method, including the following steps:

[0052] Step S1, using the V / I conversion circuit to convert the AC input voltage into an AC current output, the input voltage is controlled by the closed-loop control loop to realize the variable one with adjustable range; and the V / I conversion circuit is also equipped with at least two Two resistors are connected in parallel to change the total resistance value of the parallel resistors through the on-off combination to form variable two with adjustable range; the output current of the V / I conversion circuit performs corresponding range switching with the change of the variable one and variable two, And the output current of the V / I conversion circuit is transformed linearly with the quotient of the first variable and the second variable.

[0053] Step S2, setting a sampling resistor bet...

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PUM

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Abstract

The invention relates to the technical field of electronics, and discloses a wide-range and closed-loop control alternating current source and a processing method. The alternating current source includes a V / I switching circuit, and a sampling resistor, wherein the V / I switching circuit is used for converting alternating current input voltage into alternating current output, and the input voltageis a first variable which is controlled by a closed control loop to make the measurement range adjustable; the V / I switching circuit is further provided with at least two resistors which are connectedin parallel, so that the total resistance value of the resistors connected in parallel is changed through on-off combination, and a second variable which makes the measurement range adjustable is formed; output current of the V / I switching circuit linearly transforms along with the quotient of the first variable and the second variable; the sampling resistor is in series connection between the V / I switching circuit and a load; the closed control loop is used for calculating and obtaining an increment required for adjusting the first variable according to feedback data of the sampling resistorand applying the increment to the input end of the V / I switching circuit through a digital analog converter.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a wide-range and closed-loop controlled AC current source and a processing method. Background technique [0002] With the advancement of science and technology, the rapid development of power electronics technology, many advanced electronic technologies are constantly emerging, the fields involved in electronic equipment are becoming wider and wider, and there are more and more types of electrical equipment. The requirements for control performance and power supply accuracy are also increased. Stabilized voltage sources and constant current sources play an important role in instrumentation, electronic equipment and high-tech industries. The research and design of AC current sources are relatively limited. With the development of high efficiency, high stability, high power density, and modularization of power supplies, the research and development of power supplies has becom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
Inventor 刘国福徐总方正熊艳胡能钢甘伟喻学宁
Owner 湖南银河电气有限公司
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