Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Control method for the mixing compensation system of the active power filter and parallel capacitor

A power filter, compensation system technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, harmonic reduction devices, etc., can solve the problems that have not been raised, and achieve system stability, simplicity and reliability The effect of the compensation effect

Inactive Publication Date: 2007-07-11
XI AN JIAOTONG UNIV
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the data retrieval conducted by the applicant, up to now, no practical and reliable method has been proposed in the prior art for this situation. The current research is basically only through the subtraction of the current vectors detected by multiple sets of transformers to obtain the active current vector. The current that should be emitted by the filter device, but this method is not suitable for occasions where the number of capacitor banks is large and the installation locations are scattered

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
  • Control method for the mixing compensation system of the active power filter and parallel capacitor
  • Control method for the mixing compensation system of the active power filter and parallel capacitor
  • Control method for the mixing compensation system of the active power filter and parallel capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A control method for a hybrid compensation system composed of a shunt active power filter and a shunt capacitor. When the load current detected by the shunt active power filter includes the current of the shunt capacitor, the shunt active power filter simultaneously detects Grid voltage and load current (applicable including or not including capacitor current), the detection of load current is used to control the harmonics that the active power filter output needs to compensate; detection of grid voltage can control the active power filter as an equivalent Harmonic resistance (the resistance value is a certain value in the harmonic frequency band, and the resistance value is infinite in the fundamental frequency band), so as to suppress system resonance and improve system stability. The purpose of improving system stability and compensation effect can be achieved by superimposing the two parts of instructions.

[0019] The structure of the parallel active power filter s...

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

This invention relates to one parallel source filter and its mixture compensation system control method, wherein, when the filter testes load current, the filter tests the electrical network voltage and load current resonance component; the test load current is to control source power filter needed resonance wave; the test network voltage controls the source power filter into one resonance resistance with resonance wave value as set.

Description

technical field [0001] The invention belongs to the application category of power quality control, and specifically relates to a control method for a hybrid compensation system composed of a parallel active power filter and a parallel capacitor. Background technique [0002] With the development of power electronics technology and the improvement of people's requirements for power quality, the shunt active power filter has attracted widespread attention because of its superior power quality control performance, and is gradually becoming practical. At the same time, shunt capacitors are generally used in my country's low-voltage power distribution system for reactive power compensation. In the actual system, due to the large number of installed groups of reactive capacitors and the flexible location, after the shunt active power filter is used in the system, when the shunt active power filter uses the control method of detecting the load current, its detection The received l...

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
IPC IPC(8): H02J3/01H02J3/18
CPCY02E40/30Y02E40/40
Inventor 吴隆辉卓放张鹏博李晖王兆安文博
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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