Parallel repetitive control system implemented based on FPGA (Field Programmable Gate Array)

A repetitive control and repetitive controller technology, applied in the direction of irreversible DC power input conversion to AC power output, AC network to reduce harmonics/ripples, harmonic reduction devices, etc., can solve the problem of repetitive control of medium and high frequency power supplies, etc. problem, to achieve the effect of simple structure, elimination of harmonics, and improvement of output quality

Active Publication Date: 2012-07-11
山东艾诺仪器有限公司
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the current situation, in order to solve the problem of repetitive control of medium and high frequency power supplies, the present invention provides a parallel repetitive control system based on FPGA, which uses the parallel processing function of FPGA to realize the accumulation of the output of the repetitive controller

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
  • Parallel repetitive control system implemented based on FPGA (Field Programmable Gate Array)
  • Parallel repetitive control system implemented based on FPGA (Field Programmable Gate Array)
  • Parallel repetitive control system implemented based on FPGA (Field Programmable Gate Array)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A parallel repetitive control system based on FPGA, such as figure 1 Shown, comprise AD chip 1, FPGA digital controller 2, inverter circuit 3 and LC filtering circuit 4, described FPGA digital controller 2 comprises AD interface module 21, PID control module 22, n parallel control specific times respectively A harmonic repetition controller module 23 and an accumulation module 24 for accumulating the output results of the repetition controller. One end of the AD interface module 21 is connected to the external AD chip 1 for real-time communication with the AD chip and to collect power parameters. The other end of the AD interface module 21 is connected to the PID control module 22 and n repeating controller modules 23. The output of the n repeating controller modules 23 is connected to the accumulating module 24, and the output results are accumulated by the accumulating module.

[0022] The block diagram of the parallel repetitive control system is as follows: ...

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 relates to a parallel repetitive control system implemented based on an FPGA (Field Programmable Gate Array) and used for eliminating specified sub-harmonics. The system comprises an AD (Analog to Digital) chip, an FPGA digital controller, an inverter circuit and an LC filter circuit, wherein the FPGA digital controller comprises an AD interface module connected with the AD chip, a PID (Proportion Integration Differentiation) control module, n parallel repetitive controller modules for controlling specified sub-harmonics respectively, and an accumulating module for accumulating the output results of a repetitive controller; the output end of the accumulating module is connected with the inverter circuit; and the output end of the inverter circuit is connected with the AD chip through the LC filter circuit. A power supply inverter circuit is subjected to repetitive control, repetitive controllers are designed respectively specific to specific sub-harmonics, and the control effects of a plurality of repetitive controllers are accumulated on the premise of not increasing running time; and the advantages of high speed and parallel operation of the FPGA are utilized, and a repetitive control algorithm can be applied in the field of power supplies with high frequencies.

Description

technical field [0001] The invention relates to the technical field of harmonic control of power inverter circuits, in particular to an FPGA-based parallel repetitive control system for eliminating specific sub-harmonics. Background technique [0002] In the fields of active filtering, inverter, AC inverter power supply, and emerging photovoltaic grid-connected fields, signal harmonic control has always been the most critical technology, which is directly related to the overall quality and operating efficiency of the output device. Therefore, a reasonable Duplication control strategies are especially important. The commonly used repetitive control methods mainly include conventional PID control, deadbeat control and sliding mode control, while the repetitive control technology using the internal model structure of the "repetitive signal generator" can realize similar periodic integral control and can use the advanced link Realize the periodic compensation of the error to ac...

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): H02M7/48H02J3/01
CPCY02E40/40
Inventor 庞清奎杨洪军白洪超
Owner 山东艾诺仪器有限公司
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap