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High-precision large-power dc voltage output control method

A technology of DC voltage and output control, applied in control/regulating systems, regulating electrical variables, instruments, etc., can solve the problems of low voltage regulation accuracy, low output power, and large size, and achieve high power output, improve The effect of adjusting the precision

Inactive Publication Date: 2016-06-01
JIANGSU LVYANG ELECTRONICS INSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of current regulated power supply is not easy to control, has low reliability, large interference, low precision, large volume and high complexity.
There are many types of DC regulated power supplies, but there are two problems as follows: 1) The output power is not high
2) The voltage stabilizing method adopts a series voltage stabilizing circuit, and carries out current limiting or cut-off protection for overload, the circuit structure is complex, and the voltage stabilizing accuracy is not high

Method used

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Embodiment Construction

[0012] In order to express the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.

[0013] like figure 1 As shown, the foundation-based DC voltage control system of the present invention includes a plurality of power units connected in parallel in turn, a feedback module, a comparison module and a reference unit for providing DC voltage detection and sampling control for multiple power units; the input of the power unit The terminal is connected to an external power supply through a rectifier, the reference unit is connected in series with the comparison unit, multiple power units are respectively connected to the comparison module through the feedback module, the output terminal of the reference unit is connected to the comparison module, and the comparison modules are respectively connected to multiple power units.

[0014] like figure 2 As shown, the high-precision and high-power DC voltage ...

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Abstract

The invention belongs to the technical field of power electronics, and relates to a high-precision large-power dc voltage output control method. The high-precision large-power dc voltage output control method comprises step A: a reference unit takes a sample of dc voltage, the dc voltage serves as reference dc voltage of each power unit and is sent to a comparison module; step B: a feedback module acquires working dc voltage of each power unit and sends the working dc voltage to the comparison module; step C: the working dc voltage of a plurality of power units is compared with the reference dc voltage of the plurality of power units in the comparison module, and the error value of the working dc voltage of the power units can be obtained; and step D: the comparison module controls the change of output energy in order to make the dc voltage of the power units tend to the reference dc voltage. With respect to the high-precision large-power dc voltage output control method, the input voltage is dynamically adjusted according to different output voltage, the adjusting precision of the power supply can be improved, and large-power output can be achieved.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a parallel-connected high-precision and high-power DC voltage output control method. Background technique [0002] DC regulated power supply is one of the commonly used instruments and equipment in electronic technology. It is widely used in teaching, scientific research and other fields. It is an indispensable electronic instrument for electronic experimenters, electronic designers and circuit development departments to conduct experiments and scientific research. In electronic circuits, a DC power supply with stable voltage is usually required for power supply. The entire voltage stabilization process is composed of four parts: power transformer, rectifier, filter, and voltage regulator. However, this kind of current regulated power supply is not easy to control, has low reliability, large interference, low precision, large volume and high complexity. Th...

Claims

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Application Information

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IPC IPC(8): G05F1/46
Inventor 吴圣帆印德荣
Owner JIANGSU LVYANG ELECTRONICS INSTR GROUP
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