用平均法分析隔离结构CUK变换器的过程

Q3 Energy
Yu.V. Rudenko
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引用次数: 0

摘要

在累积无功元件的连续电流和电压模式下,使用基于拉格朗日定理的平均方法研究了具有各向同性变压器的库克变换器中的过程。基于相对变量建立了该装置的数学模型。基于所建立的模型,获得了计算输入和输出扼流圈中电流纹波以及存储电容器中电压的解析关系。已经开发了分析依赖性来确定在整个开关范围内转换器的开关元件中的电流和电压的最大值,这允许在设计阶段以可接受的参数合理地选择器件的这些元件。结果表明,在变换系数的一定范围内使用基于所开发的数学模型的表达式时,忽略了库克变换器中隔离变压器的泄漏电感,大大简化了它们的分析外观和使用,并且不会导致计算精度的显著偏差(超过4-5%)。参考文献10,图3。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
ANALYSIS OF PROCESSES IN A CUK CONVERTER WITH ISOLATED STRUCTURE USING THE AVERAGING METHOD
The processes in the Cook converter with an isoted transformer have been studied using the averaging method based on Lagrange's theorems in the mode of continuous currents and voltages in accumulating reactive elements. A mathematical model of the device based on relative variables is developed. Based on the developed model, analytical relations were obtained for the calculation of current ripple in the input and output chokes, as well as the voltage in the storage capacitors. Analytical dependences have been developed to determine the maximum values of currents and voltages in the switching elements of the converter in the entire switching range, which allows to reasonably select these elements of the device with acceptable parameters at the design stage. It is shown that neglecting the leakage inductance of the isolated transformer in the Cook converter when using expressions based on the developed mathematical model within certain limits of the transformation coefficient greatly simplifies their analytical appearance and use and does not lead to significant (more than 4-5%) deviations in calculation accuracy. References 10, figures 3.
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来源期刊
Technical Electrodynamics
Technical Electrodynamics Energy-Energy Engineering and Power Technology
CiteScore
1.80
自引率
0.00%
发文量
72
审稿时长
4 weeks
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