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

Decoupling control method based on virtual synchronous generator and decoupling control device thereof

A virtual synchronization and decoupling control technology, which is applied in the direction of motor generator control, electromechanical transmission control, electronic commutation motor control, etc., can solve the problems of weakening coupling compensation control, inability to achieve decoupling, and unsatisfactory effects

Inactive Publication Date: 2016-08-31
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
View PDF2 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dq decoupling of voltage and current can be achieved by using the traditional PI control algorithm, but in the traditional PI controller, there will be perturbation in the resistance parameters and filter inductance, so there is a difference between the parameters set by the controller, and the feed-forward It is a kind of compensation control that weakens the coupling, and it cannot achieve decoupling in the true sense, and the effect is not ideal

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
  • Decoupling control method based on virtual synchronous generator and decoupling control device thereof
  • Decoupling control method based on virtual synchronous generator and decoupling control device thereof
  • Decoupling control method based on virtual synchronous generator and decoupling control device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] 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 making creative efforts belong to the protection scope of the present invention.

[0067] An embodiment of the present invention provides a decoupling control method based on a virtual synchronous generator, see figure 1 , the method includes:

[0068] S101, establishing the LC filter equation of the virtual synchronous generator;

[0069] S102. Convert the coordinate system of the LC filter equation into a dq coordinate system to obtain the expression of the LC filter equation in the dq coordinate system;

[0070] The physical meaning of ...

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 provides a decoupling control method based on a virtual synchronous generator and a decoupling control device thereof. The decoupling control method based on the virtual synchronous generator comprises the steps that an LC filter equation of the virtual synchronous generator is established; the coordinate system of the LC filter equation is transformed into a dq coordinate system so that the expression of the LC filter equation in the dq coordinate system is obtained; the d-axis component of current, the q-axis component of current, the d-axis component of voltage and the q-axis component of voltage are respectively acquired according to the expression of the filter equation in the dq coordinate system; and auto-disturbance-rejection decoupling control is performed on the d-axis component of current, the q-axis component of current, the d-axis component of voltage and q-axis component of voltage. According to the technical scheme, real voltage and current dq decoupling control can be realized, and robustness and adaptability of a microgrid system are better.

Description

technical field [0001] The invention relates to the field of electrical control, in particular to a decoupling control method and device based on a virtual synchronous generator. Background technique [0002] With the increasing global energy problems and increasing environmental pressure, people's focus has shifted from the field of traditional power generation technology to the field of new energy, distributed power generation technology, micro-grid technology, and the penetration of distributed power in power systems. rate keeps increasing. The output of distributed generation is mostly direct current, which needs to be connected to the distribution network through a grid-connected inverter. Conventional distributed grid-connected power generation control mostly adopts the power electronic grid-connected inverter mode, which has a very fast response speed and negligible moment of inertia, so it cannot participate in grid regulation and cannot guarantee grid stability. ...

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 Applications(China)
IPC IPC(8): H02P21/14H02P21/22H02J3/38
CPCH02J3/38H02P21/14
Inventor 唐酿盛超翁洪杰朱以顺肖湘宁陶顺袁敞孙闻黄辉陈锐张俊峰朱良合罗运松张毅超吴晓宇刘正富安然然赵艳军
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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