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A New Switching Control Method of APF Based on Hybrid System Theory

A control method and hybrid system technology, applied in the direction of AC network circuits, electrical components, circuit devices, etc., can solve the problems of no unified design mode or standard, and achieve the effect of good quality control and stability

Inactive Publication Date: 2011-12-28
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the control problem of hybrid systems, there is no unified and fixed design pattern or standard, but choose the appropriate method for design according to the different backgrounds, performance requirements and ultimate goals of their respective fields.

Method used

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  • A New Switching Control Method of APF Based on Hybrid System Theory
  • A New Switching Control Method of APF Based on Hybrid System Theory
  • A New Switching Control Method of APF Based on Hybrid System Theory

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Embodiment

[0028] Embodiment: a kind of APF novel switching control method based on hybrid system theory (see figure 2 , image 3 ), characterized in that it comprises the following steps:

[0029] (1) It is known that the three-phase APF is a hybrid dynamic system in which discrete and continuous alternate and interact with each other; its core is a converter, V 1 , V 2 , V 3 , V 4 , V 5 and V 6 It is a power switching device that makes up the converter, and the DC side of the converter has a voltage stabilizing capacitor C d , the AC side is connected to the system through a filter inductor, wherein the power switching device can be a switching device such as IGBT, IGCT; (see figure 1 )

[0030] (2) Decompose the hybrid dynamic system described in step (1) into a continuous variable dynamic subsystem and a discrete event dynamic subsystem; the dynamic characteristics of the continuous variable subsystem evolve with time, and the dynamic evolution of the discrete event subsyste...

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Abstract

The invention relates to a novel active power filter (APF) switching control method based on a hybrid system theory. The method comprises the following steps of: decomposing a system, analyzing the operating working condition, determining that the system is stable, and safely switching. The method has the advantages that: 1, a three-phase APF is used as a hybrid dynamic system and is accurate, and a control system designed on the basis has high control quality; 2, switching control is performed in different modes, so that balance between the control requirement of the local working condition of an APF system and the optimization of overall performance can be achieved; and 3, through switching supervisory control and stable supervisory control, switching among controllers and the stability of the APF hybrid control system are ensured.

Description

(1) Technical field: [0001] The invention relates to the fields of power electronics technology and hybrid system control, in particular to a new APF switching control method based on hybrid system theory. (two) background technology: [0002] From the point of view of the working characteristics of the system, the power electronic circuit is a typical hybrid switching system, and with the change of the external system, it has more working modes. For the control problem of hybrid systems, there is no uniform and fixed design pattern or standard, but choose the appropriate method to design according to the different backgrounds, performance requirements and final goals of each field. The design of the APF hybrid control system is to design a suitable hybrid control system structure to reflect the switching and control requirements in different operating state modes. The key is to construct a hybrid controller that can achieve its control goals. For this purpose, different mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 吴凤英田程文周雪松马幼捷赵健刘思佳
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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