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An active filter control system

A control system and source filter technology, applied in the field of power grid, can solve problems such as poor anti-interference, poor stability, and poor harmonic compensation effect, and achieve the effect of improving safety, high stability and safety, and avoiding connection

Inactive Publication Date: 2018-12-18
安徽亚辉电气自动化有限公司
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to provide an active filter control system, which solves the problems of poor harmonic compensation effect, poor stability and poor anti-interference in the existing filter working process

Method used

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  • An active filter control system

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] see figure 1 As shown, an active filter control system includes a processor, a voltage sampling circuit, an input current sampling circuit, a first signal modulation circuit, a synchronous detection circuit, an output current sampling circuit, a second signal modulation circuit, a drive control circuit, PWM pulse width modulation circuit, power module and execution control circuit;

[0024] The voltage sampling circuit is connected to the processor through ...

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Abstract

The invention discloses an active filter control system, which comprises a processor, a voltage sampling circuit, an input current sampling circuit, a first signal modulating circuit, a synchronous detection circuit, an output current sampling circuit, a second signal modulating circuit, a driving control circuit and a PWM pulse width modulating circuit. A voltage sampling circuit is connected with the processor through a synchronous detection circuit, An input current sampling circuit is connected to the processor through a first signal modulation circuit, A synchronization detection circuitis connected with that first signal modulation circuit, The processor is respectively connected with a driving control circuit, an execution control circuit, a second signal modulation circuit and a power module, the driving control circuit is connected with a PWM pulse width modulation circuit, the second signal modulation circuit is connected with an output current sampling circuit, and the execution control circuit is connected with the power module. The invention has the characteristics of good filtering effect, strong anti-interference, high stability and high safety.

Description

technical field [0001] The invention belongs to the technical field of power grids and relates to an active filter control system. Background technique [0002] Harmonic pollution of the power grid With the expansion of the application of power electronics technology, such as widely used electronic rectifiers, frequency converters, UPS, frequency conversion appliances, energy-saving lamps, copiers, household appliances, etc., these nonlinear loads will generate a large number of harmonic currents and Injected into the power grid, the grid voltage will be distorted, which will make the problem of grid harmonics more and more serious. This kind of harmonic "pollution" is not only an important factor affecting the safety and power quality of the power system, but also greatly increases the loss of the power grid. Damage to electrical components and equipment, traditional passive filter devices are easily affected, poor harmonic compensation effect, easy to generate resonance, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01
CPCH02J3/01Y02E40/40
Inventor 宁仁飞陈涛王习红
Owner 安徽亚辉电气自动化有限公司
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