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Power electronic circuit optimizing method based on estimation of distribution algorithms

A distribution estimation algorithm, power electronics technology, applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems such as difficulty in obtaining high-quality design effects

Inactive Publication Date: 2011-06-15
SUN YAT SEN UNIV
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Problems solved by technology

The disadvantage of these algorithms is that they are easy to fall into local optimum
For more complex circuits, it is difficult to obtain high-quality design results using traditional optimization methods

Method used

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  • Power electronic circuit optimizing method based on estimation of distribution algorithms
  • Power electronic circuit optimizing method based on estimation of distribution algorithms
  • Power electronic circuit optimizing method based on estimation of distribution algorithms

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specific Embodiment approach

[0045] 1. Initialization.

[0046] The present invention uses a fixed-width histogram probability model to estimate the optimal value distribution of each electronic component in a power electronic circuit; assuming that the value range of an electronic component is [a, b], the number of histograms is n, and the height h respectively 1 , h 2 ,... h n , then the intervals represented by each histogram are:

[0047] [a, a+Δ], [a+Δ, a+2Δ], ..., [b-Δ, b],

[0048] Where Δ=(b-a) / n is the width of the interval, and the probability of the electronic component taking a value in interval i is:

[0049] h 1 / N, h 2 / N,...,h n / N

[0050] where N=h 1 + h 2 +...+h n. . In the initialization phase of the algorithm, the initial histogram probability model is:

[0051] H = h 11 , h 12 ...

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Abstract

The invention relates to a power electronic circuit optimizing method based on estimation of distribution algorithms. The automatic optimal design of the power electronic circuit is an important technology of enhancing the design quality and the design efficiency of the power electronic circuit. In the invention, the estimation of the distribution algorithms is applied to the automatic optimal design of the power electronic circuit and two fields of the power electronic circuit and the intelligent computation are related. In the method provided by the invention, a histogram probability model is applied to estimate the optimal value distribution of each electronic component in the power electronic circuit; and in the meantime, the self-adaptive local optimum operation is introduced into the estimation of the distribution algorithms to enhance the efficiency of the algorithm optimization. Through a test on the optimal design of a buck converter, the method provided by the invention is proved to be very effective.

Description

Technical field: [0001] The invention relates to two fields of power electronic circuit and intelligent calculation, and mainly relates to a power electronic circuit optimization method based on a distribution estimation algorithm. Background technique: [0002] Power electronic circuit technology is widely used in a variety of everyday electronic devices. It uses power electronics to adjust and control the supply current or voltage to suit the needs of the user load. With the rapid development of semiconductor technology and computer science and technology and other related fields, the automatic optimization design of power electronic circuits has become possible, and has become an important technology to improve the quality and efficiency of power electronic circuit design. [0003] Traditional power electronic circuit optimization methods are mainly deterministic optimization methods, such as Newton's method and steepest descent method. The disadvantage of these algorit...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 张军钟竞辉詹志辉
Owner SUN YAT SEN UNIV
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