| I2控制Buck变换器的一阶动力学分析 |
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| 引用本文： | 周群,徐懿,张金保,宁佳,曾雪洋.I2控制Buck变换器的一阶动力学分析[J].电子科技大学学报（自然科学版）,2016,45(3):387-392. |
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| 作者姓名： | 周群 徐懿 张金保 宁佳 曾雪洋 |
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| 作者单位： | 1.四川大学电气信息学院 成都 610065 |
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| 基金项目： | 国家自然科学基金51177140 |
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| 摘 要： | 通过降阶处理,建立了I2控制Buck变换器的一阶离散映射迭代模型,研究了该模型的非线性动力学行为。通过分析检测电阻Rs和误差放大器比例系数k1为变量参数的分岔图,研究了系统从稳定周期1进入倍周分岔,从连续导电模式(CCM)鲁棒混沌进入断续导电模式(DCM)阵发混沌的动力学形为。通过Rs-Vo和k1-Vo参数空间分析和离散迭代映射空间分析,得到了稳定性和工作模式的变化情况,验证了理论分析的正确性。
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| 关 键 词： | 稳定分析 混沌 离散映射模型 一阶模型 开关DC-DC变换器 |
| 收稿时间： | 2015-04-09 |
One-Dimensional Dynamic Analysis of I2 Controlled Buck Converter |
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| Affiliation: | 1.Institute of electrical information, Sichuan University Chengdu 6100652.GD SOLAR CO., LTD. Yixing Jiangsu 214203 |
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| Abstract: | After dimension reduction, the I2 controlled buck converter is studied and its one-dimensional discrete iterative map model is established in this paper. Based on the model, the nonlinear dynamic characteristics of the I2 controlled buck converter is studied. Through the bifurcation analysis with the variations sensing resistance Rs and proportional coefficient k1 of error amplifier, the operation states from the stable period-1 to the period-double bifurcation and from the robust chaos in continuous conduction mode (CCM) to the intermittent chaos in discontinuous conduction mode (DCM) are studied. Through analysis of Rs-Vo and k1-Vo parameter spaces and discrete-time iterative mappings, the stability and operation mode transitions can be studied, the correctness of the theoretical analysis can be verified. |
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