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Hybrid switching system theory-based Buck circuit modeling method

A switching system and circuit technology, applied in the field of power electronics technology and hybrid systems, can solve problems such as the inability to accurately obtain motion laws, and achieve the effect of simple structure, small size, and easy analysis

Inactive Publication Date: 2011-02-23
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is only effective for slowly changing signals, and there is a large deviation between the high-frequency switching state and the actual situation; it can only understand the performance of the converter macroscopically, and cannot accurately obtain its motion law

Method used

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  • Hybrid switching system theory-based Buck circuit modeling method
  • Hybrid switching system theory-based Buck circuit modeling method
  • Hybrid switching system theory-based Buck circuit modeling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Embodiment: a kind of modeling method based on the Buck circuit of hybrid switching system theory (see attached figure 1 , 2 , 3), the method comprises the following working steps:

[0034] (1) Analyze the Buck circuit, partition the state space, and obtain the number of working states;

[0035] (2) Determine the switching conditions between the various working states of the Buck circuit, so as to determine the discrete events of the system;

[0036] (3) Determine the state variables, input variables, and output variables of the system, and establish the state equation and output equation of the Buck circuit;

[0037] (4) Determine the state matrix, input matrix and output matrix of the system according to the circuit parameters;

[0038] (5) The Buck circuit model is established by using the theory of hybrid switched systems.

[0039] Buck circuit in the above-mentioned step (1) (see attached figure 1) is composed of a constant voltage source, an energy storage in...

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PUM

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Abstract

The invention discloses a hybrid switching system theory-based Buck circuit modeling method and application thereof. The method comprises the following working steps of: 1, analyzing a Buck circuit, portioning a state space, and determining the number of working states; 2, determining switching conditions among the working states; 3, establishing a sate equation and an output equation of the Buck circuit; 4, determining a state matrix, an input matrix and an output matrix of a system according to circuit parameters; and 5, establishing a model of the Buck circuit based on the hybrid switching system theory. By utilizing the hybrid switching system theory, the modeling of the Buck circuit is accurate, and system stability and control performance are accurately analyzed, particularly complicated characteristics of a converter system caused by switching; and the Buck circuit has the advantages of simple structure, small volume, high conversion efficiency and the like.

Description

【Technical field】 [0001] The present invention relates to a Buck circuit modeling method and its application, in particular to a Buck circuit modeling method and its application based on hybrid switched system theory (hybrid switched system, HSS), which belongs to the field of power electronics technology and hybrid system technology. 【Background technique】 [0002] The hybrid system that appeared in recent years makes it possible to study the control theory of power electronic circuits, and also provides many new schemes for the modeling of power electronic systems, such as automaton model, hybrid Petri net model, hybrid switching system model, hybrid logic dynamic system model etc. [0003] From the perspective of system working characteristics, the power electronic circuit is a typical hybrid dynamic system. Due to the existence of switching devices, it has a variety of operating modes. Different operating modes correspond to different circuit topologies. The turn-on and ...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 周雪松田程文马幼捷李圣明刘思佳陈浩梁芳宋代春权博
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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