Method and system for stability analysis of DC (Direct Current)/DC converter

An analysis method and analysis system technology, applied in the field of DC/DC converter stability analysis, can solve problems such as slow convergence speed, limited application range, and difficulty in carrying out stability analysis, and achieve fast convergence speed, fast and accurate design Effect

Active Publication Date: 2018-08-17
GUANGZHOU UNIVERSITY
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Benefits of technology

This patented technology allows for better understanding on how well an AC-to-DC power supply works compared to previous methods such as Linearized Converters (LCCs). It does this because they use stabilizing techniques instead of creating specific functions or constants during operation. By doing these calculations over time, researchers are able to predict which parts will work best at different times based upon their properties. They also provide quicker feedback about optimal design options within certain limits. Overall, this new technique helps improve the efficiency and reliability of AC-AC converters while reducing costs associated therewith.

Problems solved by technology

This technical problem addressed in this patents relates to stabilizing an AC/DC conversion system that overcomes issues like instability caused by changes made during manufacturing processes. Current techniques involve analyzers and software simulation programs, but they require extensive knowledge about how these factors affect their effectiveness and reliance on specific assumptions. Additionally, current solutions lack accuracy and efficiency because they rely heavily upon approximate calculations involving constant values.

Method used

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  • Method and system for stability analysis of DC (Direct Current)/DC converter
  • Method and system for stability analysis of DC (Direct Current)/DC converter
  • Method and system for stability analysis of DC (Direct Current)/DC converter

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Embodiment Construction

[0055] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0056] Before introducing the present invention, briefly explain the discontinuous control theory earlier:

[0057] Consider the following system

[0058]

[0059] where x(t)∈R n is the state vector; f:R n →R n is a continuous nonlinear function satisfying f(0)=0, and there is a diagonal matrix L=diag(l 1 , l 2 ,...,l n )≥0 such that ||f(x)|| 2 ≤xTLx; u(t) represents the external con

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Abstract

The invention discloses a method and a system for a stability analysis of a DC (Direct Current)/DC converter. The method comprises the following steps of step S1, performing conversion deduction on aDC/DC converter system model to obtain a state-space equation of the DC/DC converter suitable for a stability analysis method of a discontinuous control theory; and step S2, judging an exponential stability of a DC/DC converter system and calculating an exponential convergence rate of the DC/DC converter by use of the deduced state-space equation of the DC/DC converter according to an exponentialstability analysis method of the discontinuous control theory. According to the method and the system for the stability analysis of the DC/DC converter, the DC/DC converter is described by use of thediscontinuous control theory, the system does not need to be linearized when the DC/DC converter is analyzed, the analysis of the system stability is more accurate, and meanwhile an analysis process is simplified.

Description

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Claims

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Application Information

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Owner GUANGZHOU UNIVERSITY
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