Constant-voltage PWM direct-current high voltage generating device and method based on PID control

A DC high-voltage generation and high-voltage technology, applied in the direction of output power conversion device, irreversible AC power input conversion to DC power output, emergency protection circuit device, etc., can solve the problems of large influence of amplitude modulation, uncontrollable, complex structure, etc. Achieve the advantages of ripple and stability, good ripple and stability, and simple circuit structure

Inactive Publication Date: 2021-12-10
STATE GRID JIANGSU ELECTRIC POWER CO LTD MARKETING SERVICE CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem of using this method is low efficiency, and the external interference has a great influence on the amplitude modulation, and the anti-interference is poor.
Such a traditional adjustment method is a bit cumbersome for the debugging of the equipment when it leaves the factory, and the effect achieved may not be very ideal, and it is time-consuming and laborious for the production process of the equipment.
[0006] In the prior art, another solution is to set a multi-level voltage regulation controller to make the output voltage more stable and adjustable by adding a voltage regulation feedback circuit, but the disadvantage of this solution is that the structure is complicated, It poses a challenge to reliability. Once the feedback circuit fails, the amplitude will continue to increase and become uncontrollable, thus exceeding the withstand voltage range of the module and peripheral components, causing damage

Method used

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  • Constant-voltage PWM direct-current high voltage generating device and method based on PID control
  • Constant-voltage PWM direct-current high voltage generating device and method based on PID control
  • Constant-voltage PWM direct-current high voltage generating device and method based on PID control

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Embodiment Construction

[0031] The application will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present application.

[0032] Such as figure 1 As shown, Embodiment 1 of the present invention provides a constant-voltage PWM direct-current high-voltage generator based on PID control, and the constant-voltage PWM direct-current high-voltage generator includes: a power supply, a first rectifier unit, a filter unit, an inverter unit, A transformer, a second rectification unit, a sampling unit and a PID voltage regulation control unit.

[0033] In a further preferred but non-limiting embodiment, the power supply is AC380 or AC220 power supply. Conventionally, AC220 power input is used, and AC380V power input can be used if the power is large.

[0034] The first rectification unit is connected to the power supply, and ...

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Abstract

The invention discloses a constant-voltage PWM direct-current high voltage generating device and method based on PID control. According to the device, a first rectifying unit is connected with a power supply and is used for rectifying alternating current into direct current; a filtering unit is connected with the first rectifying unit; an inverting unit is connected with the filtering unit and is used for inverting direct current into alternating current; the input end of a transformer is connected with the output end of the inverting unit, and the transformer is used for boosting; a second rectifying unit is connected with the output end of the transformer and is used for rectifying the voltage output by the transformer into a required direct-current high voltage; a sampling unit is used for sampling the high voltage and the high-voltage current output by the second rectifying unit in real time; and a PID voltage regulation control unit is connected with the sampling unit and is used for controlling the inverting unit, and the PID voltage regulation control unit controls the on-off of a switching device of the inverting unit, so that the output end of the inverting unit obtains a series of pulses with equal amplitudes. According to the invention, the original traditional voltage regulation mode is changed, and the traditional voltage regulation mode can be better replaced.

Description

technical field [0001] The invention belongs to the field of electrical measurement, and more specifically relates to a PID control-based constant-voltage PWM DC high-voltage generating device and method. Background technique [0002] With the domestic high voltage and UHV technology becoming increasingly mature, the corresponding equipment and facilities also need to be improved day by day. The requirements for the more frequently used DC high-voltage generators are becoming more and more stringent, and the requirements for the technology and performance of high-voltage test equipment are also gradually increasing. The traditional DC high-voltage generators on the market all fix the pulse width and then adjust the amplitude to realize stepless voltage regulation of the output voltage, so as to realize the change of high-voltage voltage. [0003] Specifically, in the prior art, step-up and down-voltage are realized by adjusting the amplitude, which is divided into four sect...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H02M7/5395H02M1/14H02M1/44H02M7/02H02H7/125
CPCH02M7/5395H02M1/14H02M1/44H02M7/02H02H7/1252
Inventor卢树峰黄奇峰徐敏锐张亦苏左强纪峰王忠东杨世海陈刚陆子刚郭家豪曹晓冬欧阳曾恺吴桥
OwnerSTATE GRID JIANGSU ELECTRIC POWER CO LTD MARKETING SERVICE CENT