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Method of optimization for power electronic circuit based on ant colony algorithm

A technology of power electronics and ant colony algorithm, applied in the direction of output power conversion device, conversion of DC power input to DC power output, electrical components, etc., can solve the problem of unsatisfactory optimization results, inability to realize automatic design and optimization, failure to find, etc. question

Inactive Publication Date: 2008-06-25
SUN YAT SEN UNIV
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Problems solved by technology

However, these methods are often prone to fall into the trap of local minima, resulting in unsatisfactory optimization results
At the same time, because the optimized selection value calculated by the traditional design optimization method cannot find the corresponding nominal value components in actual production, therefore, the real automatic design and optimization cannot be realized

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  • Method of optimization for power electronic circuit based on ant colony algorithm
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  • Method of optimization for power electronic circuit based on ant colony algorithm

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Embodiment Construction

[0051] Hereinafter, the present invention will be further described by applying the present invention to an optimal design of a step-down converter with reference to the accompanying drawings. The schematic diagram of the buck converter is shown in Figure 1. We first put the components to be optimized L, C, R 1 , R 2 , R C3 , R 4 , C 2 , C 3 , and C 4 The value of is discretized into a series of component nominal values, and mapped to a construction diagram of an ant colony algorithm optimized power electronic circuit, as shown in Figure 2. Among them, the value of each component has an upper and lower limit, 100μH≤L≤300μH, 500μF≤C≤1500μF, 600Ω≤R 1 ≤60kΩ, 30kΩ≤R 2 ≤3MΩ, 470Ω≤RC 3 ≤47kΩ, 100Ω≤R 4 ≤10kΩ, 0.2μF≤C 2 ≤20μF, 0.33μF≤C 3 ≤33μF, 0.18μF≤C 4 ≤18μF, all possible nominal values ​​of the components are within the specified upper and lower limits, and are set with reference to the common nominal values ​​of inductance, capacitance and resistance. Perform the op...

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Abstract

The invention discloses - a power electronic circuit optimizing method based on an ant-colony-algorithm, which relates to the fields of the intelligent calculation and the power electron. The invention discretizes the possible values of all elements of the power electronic circuit into a series of standard values, and then maps the standard values into a structural diagram of an ant-colony-algorithm optimizing circuit. The ant-colony algorithm is adopted to select the best route in the structural diagram, namely, a best element value is selected to meet the required circuit performance. The ant-colony algorithm is very applicable to the discretization combinational optimization, thereby can rapidly and effectively optimize the power electronic circuit. The optimized results of the method are the standard values of all elements, so the optimized results can be directly applied to the actual production without any approximation.

Description

Technical field: [0001] The invention relates to two major fields of intelligent calculation and power electronics, and mainly relates to automatic optimization and design of circuits. technical background: [0002] Power electronics are widely used in various fields, such as: power supply systems, lighting systems, and electric vehicles. For nearly three decades, small-signal models have been widely used in the design of power electronic circuits. Because under large-signal conditions, the actual response of power electronic circuits will seriously deviate from the predicted response of small-signal linear models, which brings difficulties to the design and optimization of power electronic circuits. For this reason, the demand for automatic design is becoming stronger and stronger. Twenty years ago, several automated design methods for power electronics began to emerge. These methods incorporate optimization algorithms such as heuristic learning, knowledge base, and simu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H02M3/10H02M3/137H02M3/156G05F1/46
Inventor 张军钟树鸿黄韬
Owner SUN YAT SEN UNIV
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