Robust fault-tolerant control module, method and system based on residual generator

A fault-tolerant control and generator technology, applied in general control systems, control/regulation systems, adaptive control, etc., can solve problems such as voltage and power quality problems of three-phase inverters, solve voltage and power quality problems, reduce voltage The effect of fluctuation, reduction of harmonic content and unbalance
CN112000018AActive Publication Date: 2020-11-27UNIV OF SCI & TECH BEIJING +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2020-11-27

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Abstract

The invention relates to a robust fault-tolerant control module, method and system based on a residual generator. The method comprises the following steps of: constructing a robust fault-tolerant control architecture of a three-phase inverter based on a residual generator, wherein the robust fault-tolerant control architecture of the three-phase inverter based on the residual generator comprises acompensation controller; on the basis of the robust fault-tolerant control architecture of the three-phase inverter based on the residual generator, constructing a mathematical model containing renewable energy distributed power supply inverter voltage and current double closed-loop control and an LC filter circuit, and a residual generator based on an observer; determining an optimized compensation controller according to the compensation controller and the observer-based residual generator; and controlling a control object according to the optimized compensation controller and controller. According to the invention, the voltage and power quality problem of the three-phase inverter can be solved.
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Description

technical field

[0001] The invention relates to the field of robust fault-tolerant control, in particular to a robust fault-tolerant control module, method and system based on a residual generator. Background technique

[0002] The research on new energy has attracted more and more scholars' attention. Aiming at uncertain factors such as the intermittency and volatility of distributed micro-sources, micro-grids can better distribute and solve the problem of micro-sources connecting to the power grid. The three-phase inverter is a key power electronic device in the new energy micro-grid system, which directly affects the stability, reliability and power quality of the distributed micro-source system power supply. Therefore, the robust control method of the inverter with good robust performance has important research significance.

[0003] In order to improve the power quality of the inverter output voltage in the microgrid, since the traditional way of passively controlling ...

Claims

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