Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

An Adaptive Dynamic Terminal Sliding Mode Control Method for Active Power Filters

A power filter and dynamic terminal technology, which is applied in adaptive control, general control system, control/regulation system, etc., can solve the problem of high grid current distortion rate, inability to give full play to the performance of active power filter, and low control accuracy. problem, to achieve the effect of good control accuracy, simplified control law, and reduced distortion rate

Active Publication Date: 2022-04-08
HOHAI UNIV CHANGZHOU
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The control precision of the traditional control method is often not high, which leads to the performance of the active power filter cannot be fully utilized, and in addition
Existing controllers have high grid current distortion rate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An Adaptive Dynamic Terminal Sliding Mode Control Method for Active Power Filters
  • An Adaptive Dynamic Terminal Sliding Mode Control Method for Active Power Filters
  • An Adaptive Dynamic Terminal Sliding Mode Control Method for Active Power Filters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0094] figure 1 It is a schematic diagram of an adaptive dynamic terminal sliding mode control method of an active power filter according to the present invention. The schematic diagram is intended to explain: the harmonic current is detected from the load current as a reference signal r, and the dynamic terminal is constructed based on the terminal function Sliding mode surface, and then design the switching control item to ensure the stability of the system, and use the double hidden layer recurrent neural network to approximate the equivalent control item, the designed control law outputs a harmonic compensation signal x after passing through the active power filter , using negative feedback to make the error of the system tend to zero, and finally achieve the purpose of tracking the reference harmonic current quickly and without static error.

[0095] A source power filter adaptive dynamic terminal sliding mode control method of the present invention comprises the followin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an adaptive dynamic terminal sliding mode control method of an active power filter, comprising the following steps: S1, establishing a single-phase active power filter mathematical model, defining a state variable i as x, and obtaining the second order derivative of x The expression of ; S2, define the tracking error and its first-order derivative and define the dynamic terminal sliding mode surface, get the equivalent control item, then define the switching control item, and add the equivalent control item and the switching control item to get the dynamic terminal sliding mode modulo controller; S3, using a double-hidden-layer recurrent neural network to approximate the equivalent control term. The invention provides an active power filter self-adaptive dynamic terminal sliding mode control method, which can quickly realize static-deviation-free tracking and achieve a lower power grid current distortion rate.

Description

technical field [0001] The invention relates to an adaptive dynamic terminal sliding mode control method of an active power filter, and belongs to the technical field of intelligent control. Background technique [0002] Harmonic current suppression technology has become a research hotspot in recent years. At present, the main harmonic suppression technologies include passive filters and active filters; passive filters are usually composed of inductors and capacitors, which are suitable for filtering out low-order harmonics , and can only filter out harmonics of specific harmonics, but because of its simple structure and low manufacturing cost, it is widely used in industrial fields, but the compensation accuracy of passive filters is not high, and will eventually be replaced by active power filters . Active power filter is a new type of harmonic compensation device. It is an active compensation device. In addition to compensating harmonics, it can also perform reactive pow...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04H02J3/00
CPCG05B13/042H02J3/01
Inventor 陈云费峻涛陈放
Owner HOHAI UNIV CHANGZHOU
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com